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Development of Gasification and Activities in Turkish Coal Enterprises

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<strong>Development</strong> <strong>of</strong> <strong>Gasification</strong> <strong>and</strong><strong>Activities</strong> <strong>in</strong> <strong>Turkish</strong> <strong>Coal</strong> <strong>Enterprises</strong>Mustafa ZIYPAKHead <strong>of</strong> The Research <strong>and</strong> <strong>Development</strong> DepartmentThe 28 th Annual International Pittsburgh <strong>Coal</strong> Conference, September 12 - 15, 2011, Pittsburgh, PA


ENERGY DATA OF TURKEY• Turkey is not very rich <strong>in</strong> terms <strong>of</strong> energyresources, therefore it is dependent onoutside on a large scale• Dependency rate <strong>of</strong> energy changesbetween %70-75• Energy import for 2010 is 38,5 billiondolars, for 2011 estimated between 45-50billion dolars• Turkey’s current deficit is largely due toenergy import• 2010 Electricity consumption <strong>of</strong> Turkey is210.182.000.000 kwh• Annual <strong>in</strong>crease rate <strong>in</strong> electrictyconsumption is between %6-8


COAL DATA OF TURKEY• <strong>Coal</strong> is one <strong>of</strong> the most importantenergy sources <strong>of</strong> Turkey.• It has 12,4 billion tons <strong>of</strong> lignite <strong>and</strong> 1,3billion tons <strong>of</strong> hard coal depositDistribution <strong>of</strong> Average CalorificValues <strong>of</strong> <strong>Turkish</strong> Lignites• 85 million tons <strong>of</strong> lignite <strong>and</strong> 2,5 milliontons <strong>of</strong> hard coal are produced annually• Additionally 20 million bitum<strong>in</strong>uouscoal is imported every year.• 1/4’th <strong>of</strong> all coal is utilized for electricityproduction, rema<strong>in</strong><strong>in</strong>g is used for<strong>in</strong>dustry <strong>and</strong> heat<strong>in</strong>g purposes• <strong>Turkish</strong> lignites are generally low gradecoals


TURKISH COAL ENTERPRISES (TKI)• TKI, which was established <strong>in</strong> 1957, a State-Owned Economic <strong>Enterprises</strong>,• TKI which carries out lignite production is among lead<strong>in</strong>g m<strong>in</strong><strong>in</strong>g companies <strong>in</strong>Turkey• Approximately 8200 personel have been employed• For 2009 annual <strong>in</strong>come is 1,5 billion dollars, pr<strong>of</strong>it 280 million dollars• For 2010 annual <strong>in</strong>come is 1,45 billion dollar, pr<strong>of</strong>it 230 million dollars• In rank<strong>in</strong>g <strong>of</strong> first 500 companies <strong>in</strong> Turkey, TKI is 16th for 2008, 18th for 2009• Annual production <strong>of</strong> TKI changes between 35-40 million tons• TKI has 2,6 billion tons <strong>of</strong> lignite deposit that consists <strong>of</strong> 21% <strong>of</strong> Turkey’s totallignite• In fact, TKI owns important lignite sites <strong>and</strong> they are comparatively high gradecoals• TKI fulfills coal requirement <strong>of</strong> total 4250 MW thermal power plants.


WHY AND WHAT RESEARCH AND DEVELOPMENT?Due to; low rank <strong>of</strong> coal (low calorific value, high ash, humidity, sulfur etc.) be<strong>in</strong>g one <strong>of</strong> the most important energy sources <strong>of</strong> Turkey dependency <strong>of</strong> Turkey to other countries on energy sources sign<strong>in</strong>g <strong>of</strong> Kyoto Protocol by <strong>Turkish</strong> Government (some sanctions may be the case<strong>in</strong> com<strong>in</strong>g years) need to <strong>in</strong>crease productivity <strong>and</strong> value-added by advanced technology.TKI have been perform<strong>in</strong>g research <strong>and</strong> development activities for 5 yearsR&D activities are ma<strong>in</strong>ly comprised <strong>of</strong>; coal preparation <strong>and</strong> enrichment gasification, related <strong>of</strong> which gas clean<strong>in</strong>g, gas condition<strong>in</strong>g <strong>and</strong> separation, fuel<strong>and</strong> methanol production coal m<strong>in</strong><strong>in</strong>g <strong>and</strong> coal exploration coal-derived products (e.g. Humic acid)


TKI’S R&D PROJECTS RELATING TO GASIFICATIONTKI’s gasification R&D Projects can be grouped <strong>in</strong>to three categories1. Conventional <strong>Gasification</strong> Projects1.1 TKI Pilot <strong>Gasification</strong> Projects1.2 T Liquid Fuel Production From Biomass <strong>and</strong> coal blend - Trijen Project1.3 Feasibility study for <strong>Turkish</strong> Lignites gasification (USTDA supported)2. Underground <strong>Gasification</strong> Projects2.1 Research <strong>and</strong> analysis <strong>of</strong> underground coal gasify<strong>in</strong>g <strong>in</strong> thelaboratory environment2.2 Underground <strong>Coal</strong> <strong>Gasification</strong> Analysis for <strong>Turkish</strong> <strong>Coal</strong> <strong>Enterprises</strong>3. Advanced <strong>Gasification</strong> R&D Projects3.1 <strong>Coal</strong> <strong>Gasification</strong> via Plasma Application3.2 Methane Production by <strong>Coal</strong> Biotechnology


TKI COAL GASIFICATION PROJECTS(Selection <strong>of</strong> types <strong>and</strong> capacities <strong>of</strong> gasifiers)<strong>Coal</strong> typeGra<strong>in</strong> size<strong>Gasification</strong>time<strong>Gasification</strong>mediumExit GastempratureFixedbedNoncak<strong>in</strong>gFluidizedbedNoncak<strong>in</strong>gEntra<strong>in</strong>edbedAll types5-50 mm 0,5-5 mm 0-0,5 mm15-20m<strong>in</strong>.Air/oxygen/steam400-500o C0,5-1,5hourAir/oxygen/steam700-900o C


A PICTURE FROM 250 t/h ENTRAINED BED GASIFIER


DESCRIPTION OF 250 t/h ENTRAINED BED GASIFIER250 t/h Entra<strong>in</strong>ed <strong>Gasification</strong> plant consist<strong>of</strong> 5 units:1.<strong>Coal</strong> Preparation UnitCapacity <strong>of</strong> the Unit is 1 ton/h- 0-40mm orig<strong>in</strong>al coal with max.30% humidity is crushed by a hammercrusher to 10 mm- Then is fed to a gr<strong>in</strong>der <strong>and</strong> ground to100 µ- Humidity <strong>of</strong> ground coal is decreased to5%- The hot gas for dry<strong>in</strong>g is produced fromlight oil- The dried <strong>and</strong> ground coal istransported to gasification unit undernitrogen pressure (denseveyor)2. Oxygen <strong>and</strong> nitrogen tanks- Oxygen <strong>and</strong> nitrogen requirements <strong>of</strong>gasifier will be met from 2 tanks, each willhave a capacity <strong>of</strong> 10 tons- There will be heat exchangers <strong>in</strong> theexit <strong>of</strong> the tanks- Nitrogen pressure is adjusted between0,5-1,5 bar, oxygen pressure is fixed as0,5 bar3. Preparation <strong>of</strong> cool<strong>in</strong>g <strong>and</strong> boiler feed water- Water is cleaned via s<strong>and</strong> filter, cation<strong>and</strong> anion exchangers- Water need <strong>of</strong> the system is 2000 lt/h- There is a 10 m³ tank for processed water


UNITS OF 250 t/h ENTRAINED BED GASIFIERS (2)4. Gasifier Unit• Gasifier works under atmosphericpressure, gasify<strong>in</strong>g temperature is 1500 °C• Gasifier <strong>in</strong>cludes coal lock, coal screw, ashlock, quench section• Gasifier <strong>and</strong> quench section are l<strong>in</strong>ed withrefractory. These sections are not jacketedto produce steam• Oxygen <strong>and</strong> nitrogen is fed to gasifier at0,5 bar <strong>and</strong> 1.5 bar respectively• Part <strong>of</strong> the molten ash leaves the gasifierto scrubber <strong>and</strong> rema<strong>in</strong><strong>in</strong>g falls tounderwater scrapper• Gas is cooled to 950 °C at quench sectionby spray<strong>in</strong>g water <strong>and</strong> leaves waste heatboiler at 300 °C5. Water Clarify<strong>in</strong>g <strong>and</strong> Ash Stock<strong>in</strong>g• Dirty water is clarified by add<strong>in</strong>g Al₂SO₄• Then water is pumped to clean watertank <strong>and</strong> cool<strong>in</strong>g tower• Ash gets rid <strong>of</strong> sticky feature by cool<strong>in</strong>gat quench section <strong>and</strong> drops ashremov<strong>in</strong>g system• Ash is transferred to conveyor belt bymeans <strong>of</strong> palette on ash remov<strong>in</strong>gsystem <strong>and</strong> the conveyor carries ash<strong>in</strong>to ash pool


GASIFICATION DATA FOR 250 t/h ENTRAINED GASIFIERCharacteristics <strong>of</strong> the prepared coal forthe gasifier- Carbon….: 59,92%- Hydrogen: 4,25%- Nitrogen..: 2,08%- Sulfur…….: 1,97%- Oxygen….: 8,74%- Ash………..: 18,05%- Moisture.: 5,00%Accord<strong>in</strong>g to results <strong>of</strong> gasifier design,used materials <strong>and</strong> achieved products aregiven below:Used material:- <strong>Coal</strong>……..: 250 t/h- Oxygen…: 240 kg/h- Nitrogen.: 70 kg/h- Water……: 1834 kg/h- Electricity: 160 kWProducts:- Raw gas: 423 Nm³- Steam: 240 kg/h (30 bar, 235°C)Wastes:- Ash: 55 kg/h- Water: 105 kg/hRaw Gas Analyses:- CO.: 63,80%- CO₂: 12,63%- H₂..: 21,44%- H₂S: 1,14%- N₂..: 0,99%- Fly<strong>in</strong>g ash: 1,93 kg/h


FLOW DIAGRAM OF 250 t/h ENTRAINED BED GASIFIER


FLOW DIAGRAM OF 20 t/h FLUIDIZED BED GASIFIER


LIQUID FUEL PRODUCTION FROM BIOMASS ANDCOAL BLEND - TRIJEN PROJECTAIMS• to produce more economic, efficient <strong>and</strong> clean liquid fuels from coal <strong>and</strong>biomass,• to enhance the utilization <strong>of</strong> the widespread national resources forsusta<strong>in</strong>able development <strong>and</strong> energy security,• to develop technologies to be used <strong>in</strong> <strong>in</strong>dustry,• to demonstrate the outcomes <strong>in</strong> a pilot scale.Project Duration: 48 Months (2009 -2013)Customers: <strong>Turkish</strong> <strong>Coal</strong> <strong>Enterprises</strong> (TKI) <strong>and</strong> General Directorate <strong>of</strong>Electrical Power Resources Survey & <strong>Development</strong> Adm<strong>in</strong>istration (EIE)Partners: TUBITAK, ITU, MU, UMDE, HABAŞSupport<strong>in</strong>g bodies: TUBITAK 1007 ProgrammeResearch Areas:• Fuel feed<strong>in</strong>g system,• Oxy gasification,• Steam gasification,• Gas clean<strong>in</strong>g,• Gas condition<strong>in</strong>g <strong>and</strong> separation,• F-T processes <strong>and</strong> catalysis (Liquid Fuel Production),• Process control• System <strong>in</strong>tegrationSystem capacity is 200 kg (lignite+biomass)/h <strong>and</strong> aprox. 1000 kWth feed<strong>in</strong>g<strong>Coal</strong> &BiomassLiquid Fuel


LIQUID FUEL PRODUCTION FROM BIOMASS ANDCOAL BLEND - TRIJEN PROJECTMAIN TECHNOLOGICAL RESEARCH AREASCOALBIOMASSGASIFICATIONGASCLEANINGParticulateMatterRemovalO2H2O ( STEAM)GASIFICATIONH2SRemoval(Sorbent)Tar <strong>and</strong>NH3RemovalGAS CONDITIONING<strong>and</strong> CO 2 REMOVALLIQUID FUEL, HEAT <strong>and</strong>ELECTRICITY PRODUCTIONAlkaliRemovalHClRemovalH2SRemoval(Polish<strong>in</strong>g)GAS CONDITIONINGCO2HEATFiltrationSTEAMREFORMERWATER GASSHIFTREACTORCO 2REMOVALFTSYNTHESISLIQUID FUELGAS CLEANINGGASENGINEELECTRICITYFCELECTRICITY


EXPERTIES <strong>and</strong> KNOW-HOW REQUIREMENTS OF THE PROJECTCONSTRUCTIONTECHNOLOGIESGASCONDITIONINGSIMULATION <strong>and</strong>MODELLINGGASIFICATIONTECHNOLOGIESCATALYSTDEVELOPMENTAREASOF SPECIALIZATIONGAS CLEANINGCO 2 REMOVALTECHNOLOGIESPROCESS CONTROL<strong>and</strong> OPERATIONLIQUID FUELPRODUCTION (FT)SYSTEMINTEGRATION


MAIN DELIVERABLESLIQUID FUEL PRODUCTION FROM BIOMASS ANDCOAL BLEND - TRIJEN PROJECT• Pilot Scale CTL Pilot Plant (1000 kWth <strong>and</strong> 200 kg/h feed capacity)– Fuel feed<strong>in</strong>g systems– Fluidized Bed Gasifier MAIN DELIVERABLES <strong>of</strong> the PROJECT– Gas Clean<strong>in</strong>g Systems (Particulate Matter, H 2 S, Tar, NH 3 , HCl, Alkali)– Gas Condition<strong>in</strong>g Systems (Shift Reactors)– CO 2 Removal Unit– Fischer-Tropsch Reactor• FT Catalyst• Technical <strong>and</strong> Economical Feasibility Assesment for Industrial Applications• Lab Scale Experimental Set Up– Fluidized Bed Gasifier– Gas Clean<strong>in</strong>g System (Particulate Matter, H 2 S, Tar, NH 3 , HCl, Alkali)– Gas Condition<strong>in</strong>g System (Steam <strong>and</strong> Shift Reactors)– Fischer-Tropsch Reactor (Liquid Fuel Production)


METHODOLOGYGASIFICATIONFLUIDIZED BED GASIFIER• <strong>Gasification</strong> process• K<strong>in</strong>etic studies• Design <strong>and</strong> regimes <strong>of</strong> gasifier• Oxy <strong>and</strong> steam gasification• Additive <strong>in</strong>jection to bed materialGAS CLEANINGPARTICULATE MATTER REMOVAL• Cyclone Filter• Ceramic FilterH 2 S REMOVAL• Sorbent Bed(High temperature sorbents, Dolomite)• Polish<strong>in</strong>g(Low temperature sorbents, ZnO)Tar <strong>and</strong> NH 3 REMOVAL• Additive <strong>in</strong>jection to gasifier• Catalytic Tar Crack<strong>in</strong>gAlkali REMOVAL• Adsorpsion (Bauxite, Kaol<strong>in</strong>ite <strong>and</strong> similar claybased sorbents)HCl REMOVAL• Chemical reaction with alkali metal carbonatesor oxides


METHODOLOGY (cont.)GAS CONDITIONING<strong>and</strong> SEPARATIONGas Condition<strong>in</strong>g with ThermochemicalMethods• Water Gas Shift Reactor (WGS)• Adjustment <strong>of</strong> H 2 /CO ratioCO 2 Separation• AbsorptionLIQUID FUEL PRODUCTION viaFISCHER TROPSCH SYNTHESISLow Temperature (180- 250 °C) FTProcess• Slurry Phase Reactor• <strong>Development</strong> <strong>of</strong> Fe basedcatalysts


GASIFICATION150kWth Lab Scale CFB Gasifier (constructed)1.1 MWth Pilot Scale Bubbl<strong>in</strong>g Fluidized Bed Gasifier (designed)


GAS CLEANING• H 2 S• COS• CS 2• NH 3• Tar(polyaromatichydrocarbons)• Soot <strong>and</strong>particles• HCl, HF• Alkalicompounds


GAS CONDITIONING AND SEPARATIONAIM :• H 2 /CO = ~2• CO 2 removalMETHODOLOGY:• Water gas shift reactors forH 2 /CO condition<strong>in</strong>g before FTreactor• Chemical absorption for CO 2removal


FISCHER-TROPSH SYNTHESISSlurry BubbleColumn ReactorsStudies• K<strong>in</strong>etic Studies <strong>in</strong>CSTR• Attrition Tests• Cold FlowHydrodynamic Studies• Reactor Design forpilot scale systemStudies•K<strong>in</strong>etic Studies <strong>in</strong>Lab Scale systems•Optimization studies•Modell<strong>in</strong>g studies(Aspen HYSYS,Polymath, MATLAB)•Reactor Design forpilot scale systemMulti TubularFixed Bed Reactors


FISCHER-TROPSH SYNTHESISCATALYSTS• Precipitated Fe-catalysts• Supported Fe or Co or Fe-Co bimetallic catalysts• Typical supports : Zeolites, Al 2 O 3 , ZrO 2


FISCHER-TROPSH SYNTHESISWax product sampleLiquid product sample


FEASIBILITY STUDY FOR GASIFICATION OF TURKISH LIGNITES• The U.S Trade <strong>and</strong> <strong>Development</strong> Agency (USTDA) provided a grant <strong>in</strong> theamount <strong>of</strong> US$437,020 to <strong>Turkish</strong> <strong>Coal</strong> <strong>Enterprises</strong> <strong>in</strong> accordance with agrant agreement dated August 27,2009 for coal gasification project• In this project, technical, economical <strong>and</strong> f<strong>in</strong>ancial feasibility <strong>of</strong>– <strong>Gasification</strong> <strong>of</strong> <strong>Turkish</strong> lignites <strong>in</strong> a gasification plant– Convert<strong>in</strong>g syngas <strong>in</strong>to synthetic natural gas (SNG)– <strong>in</strong>sert<strong>in</strong>g SNG <strong>in</strong> gas transmission system– Or us<strong>in</strong>g it <strong>in</strong> an IGCC power plant <strong>in</strong> TurkeyWill be assessed• The company that would perform feasibility study idendified by meanstender. Among 16 companies which <strong>of</strong>fered for the tender, Worleyparsonswas qualified• All necessary <strong>in</strong>formation <strong>in</strong>clud<strong>in</strong>g coal analiyses data have been deliveredto the company. The feasibility study is go<strong>in</strong>g on with respect to theschedule, it is expected to be completed <strong>in</strong> Nowember, 2011


FEASIBILITY STUDY FOR GASIFICATION OF TURKISH LIGNITES• The Project will be performed <strong>in</strong> 10 steps:• Purpose <strong>of</strong> Study <strong>and</strong> Prelim<strong>in</strong>ary Review• Technology Screen<strong>in</strong>g Analysis• Site Selection• Conceptual Design• Economic Analysis• F<strong>in</strong>ancial Analysis• Environmental Analysis• Regulatory Analysis• <strong>Development</strong> Impact• Export Potential – U.S. Sources <strong>of</strong> Supply• Implementation Plan• F<strong>in</strong>al Report


FEASIBILITY STUDY FOR GASIFICATION OF TURKISH LIGNITES• Technical Analysis ;– Screen at least two commercial gasification systems to best meetfuture dem<strong>and</strong> <strong>in</strong> Turkey.– Perform a screen<strong>in</strong>g <strong>of</strong> at least two sites identified <strong>in</strong> the prelim<strong>in</strong>arysite visit to choose the best locations to build these gasificationfacilities– Carryout a conceptual design <strong>of</strong> the gasification facility.• Technology screen<strong>in</strong>g evaluation,• Site selection at least two <strong>and</strong> up to 10 potential sites• Conceptual Design– Design requirement document, which def<strong>in</strong>es the design basis for thefeasibility design,– Technical description <strong>of</strong> the gasifier <strong>and</strong> the gas cleanup tra<strong>in</strong>, at aconceptual feasibility level <strong>of</strong> design,– Equipment list, <strong>in</strong>clud<strong>in</strong>g major items <strong>of</strong> equipment, <strong>in</strong>dicat<strong>in</strong>gquantities <strong>and</strong> level <strong>of</strong> redundancy,


FEASIBILITY STUDY FOR GASIFICATION OF TURKISH LIGNITES• Conceptual Design (cont<strong>in</strong>ued)– Heat <strong>and</strong> mass balance at a s<strong>in</strong>gle design ambient condition. The work shall be performed byadapt<strong>in</strong>g exist<strong>in</strong>g s<strong>of</strong>tware models (heat <strong>and</strong> mass balances). Block flow diagram for thegasifier <strong>and</strong> gas cleanup tra<strong>in</strong>– Termal performance summary,– Air emissions summary ,– Plant <strong>in</strong>puts <strong>and</strong> outputs summary,– Water balance diagram,– Process blocks <strong>in</strong> a plan view,– Level 1 schedule for eng<strong>in</strong>eer<strong>in</strong>g, permitt<strong>in</strong>g, fabrication <strong>and</strong> construction, start up <strong>and</strong>commission<strong>in</strong>g,– Estimated availability trend for the gasification unit– Discussion <strong>of</strong> the treatment <strong>and</strong> disposition <strong>of</strong> tars <strong>and</strong> oil <strong>and</strong> butane/toluene <strong>and</strong> xylene(BTX), if appropriate.• Economic Analysis ;– Capital Cost Estimate– Project Operat<strong>in</strong>g <strong>and</strong> Ma<strong>in</strong>tanenance Expenses– Projected Revenue– Cash Balance Pro Forma


UNDERGROUND COAL GASIFICATION (UCG)• UCG is the gasification <strong>of</strong> coal <strong>in</strong> the seam-<strong>in</strong>-situ by us<strong>in</strong>g air oroxygen or air <strong>and</strong> oxygen together• Air <strong>and</strong> oxygen <strong>in</strong>jected down a borehole – produced gas called assynthesis gas is extracted• UCG uses similar process to surface gasification except, the reactoris underground, <strong>in</strong> the coal seam• UCG can be used on resources which are not otherwise feasible oreconomic to m<strong>in</strong>e by open cast or U/G m<strong>in</strong><strong>in</strong>g methods• Although commercial application <strong>of</strong> UCG is limited, manyexperiments <strong>and</strong> trials have been realized up to today


HOW DOES UCG WORK?Perform<strong>in</strong>g steps <strong>of</strong> UCG:Schematic <strong>of</strong> the components <strong>of</strong> the UCGprocess collocated with electricity generation(UCG Eng<strong>in</strong>eer<strong>in</strong>g, Ltd., 2006)• Step 1: F<strong>in</strong>d the coal• Step 2: Drill the boreholes• Step 3: L<strong>in</strong>k the boreholes• Step 4: Ignite the coal• Step 5: Inject the O 2 <strong>and</strong>steam• Step 6: Extract the syngas• Step 7: Gas clean<strong>in</strong>g• Step 8: CO₂ separation• Step 9: Use <strong>of</strong> gas(electricity production)


ADVANTAGES AND DISADVANTAGES OF UCG• Advantages:• Much higher coal utility – up to 95%• Conventional coal m<strong>in</strong><strong>in</strong>g is elim<strong>in</strong>ated withUCG• <strong>Coal</strong>s that are unm<strong>in</strong>eable (too deep, lowgrade, th<strong>in</strong> seams) are exploitable by UCG,• More economic – less capital expenditurecompared to traditional gasification• Potential to be cleaner technology (Noproduction <strong>of</strong> some criteria pollutants e.g.,SOx, NOx)• Trace elements <strong>of</strong> contam<strong>in</strong>ants are leftunderground• Little or no rehabilitation required, UCGleaves environment largely untouched• No Ash (most <strong>of</strong> the ash <strong>in</strong> the coal staysunderground)• Less greenhouse gas <strong>and</strong> has advantages forgeologic carbon storage• Disadvantages:– Underground water tablecontam<strong>in</strong>ation– Ground Subsidence.– The rate <strong>of</strong> water <strong>in</strong>flux, thedistribution <strong>of</strong> reactants <strong>in</strong>the gasification zone, <strong>and</strong>the growth rate <strong>of</strong> thecavity, cannot be controlledlike surface gasifiers.


IMPORTANCE OF UCG FOR TURKEY AND TKI• <strong>Turkish</strong> <strong>Coal</strong> <strong>Enterprises</strong>’ (TKI) coals <strong>and</strong> other Turkey coals are ma<strong>in</strong>ly low-rank or s<strong>of</strong>t coal (e.g.lignite)• In Turkey, some lignite deposits are not m<strong>in</strong>eable or m<strong>in</strong><strong>in</strong>g is not economical. These deposits maybe well suited for underground gasification.• TKI has started a development program aimed at creat<strong>in</strong>g commercial coal gasification operations.• Turkey is a net importer <strong>of</strong> gas <strong>and</strong> oil, <strong>and</strong> has become <strong>in</strong>creas<strong>in</strong>gly dependent on natural gasfrom a pipel<strong>in</strong>es that runs through the country.• Turkey could improve its energy security by <strong>in</strong>creas<strong>in</strong>g utilization <strong>of</strong> its sizeable coal resources.• Lignite gasifies well <strong>and</strong> the deep seams are good for UCG. However, many issues must beaddressed, such as select<strong>in</strong>g the best regions <strong>and</strong> sites, identify<strong>in</strong>g economic uses for the productgas, th<strong>in</strong> seams, high moisture. Therefore, some R&D activities must be done beforeh<strong>and</strong>Regard<strong>in</strong>g UGG, TKI has completed a lab scale project <strong>and</strong> is conduct<strong>in</strong>g a feasibility study. These are:1 - Research <strong>and</strong> analysis <strong>of</strong> underground coal gasify<strong>in</strong>g <strong>in</strong> the laboratory environment2 - <strong>Gasification</strong> <strong>of</strong> <strong>Turkish</strong> Lignite via Underground <strong>Coal</strong> <strong>Gasification</strong> (UCG)


RESEARCH AND ANALYSIS OF UCG IN LABORATORYENVIRONMENT• The research was performed <strong>in</strong> cooperation with Kosice Technical University Faculty <strong>of</strong> Berg,(Slovaika)• Aim <strong>of</strong> the research is to simulate UCG process <strong>in</strong> laboratory environment• 1,5 ton <strong>of</strong> Soma region coal were used for the experiment• Chracteristics <strong>of</strong> the coal– Calorific value……: 2625 kcal/kg– Fixed carbon (%)..: 17,76– Total moisture (%): 13,93– Ash (%)…………….…: 35,32– Volatile matter (%): 32,99• Samples were taken U/G coal m<strong>in</strong>e <strong>in</strong> Soma <strong>and</strong> before haul to the surface, samples were sealedto prevent loss <strong>in</strong> moisture content <strong>and</strong> volatile matter• There were two experiments carried out with the supplied coalExperiment 1. With drill<strong>in</strong>g the gasification channel (channel model): a horizontal hole is drilled<strong>in</strong> the sample so that air/oxygen can pass throughExperiment 2. Without drill<strong>in</strong>g the gasification channel: In this case, no channel is drilled, butthe required permeability <strong>of</strong> the coal massive was reached by its separation with pressure us<strong>in</strong>gliquid or gaseous media• The research was completed <strong>in</strong> September, 2010


RESEARCH OF UNDERGROUND COAL GASIFYING INTHE LABORATORY ENVIRONMENT


BEHAVIOUR OF THE MEASURED CONCENTRATION IN SYNGAS DURINGEXPERIMENT 1 WITH DIVIDING INTO PARTITIONS WITH VARIOUS OXIDIZERS


BEHAVIOUR OF THE MEASURED CONCENTRATION IN SYNGAS DURINGEXPERIMENT 2 WITH DIVIDING INTO PARTITIONS WITH VARIOUS OXIDIZERS


Influence <strong>of</strong> theoxygen added to theoxidizer mixturedur<strong>in</strong>g experimentBehaviour <strong>of</strong> the<strong>in</strong>creas<strong>in</strong>g oxygenpercentage <strong>in</strong> theoxidizer mixturedur<strong>in</strong>g experiment


RESEARCH RESULTS OF UCG IN LABORATORY ENVIRONMENT• For first experiment, the highest calorific value (16 - 17 MJ/Nm 3 ) <strong>of</strong> produced gas wasachieved at 70% <strong>and</strong> 80% <strong>of</strong> the O 2 <strong>in</strong> the mixture with an air• The first experiment showed that the used coal can be gasified with positive results(maximal calorific value <strong>of</strong> about 20 MJ/m 3 )• For second experiment, the highest long – term calorific value (9 MJ/Nm 3 ) <strong>of</strong>produced gas was achieved <strong>in</strong> gasification with 100 % O 2• With the <strong>in</strong>creas<strong>in</strong>g temperature, the CO production <strong>in</strong>creases• The highest CO content <strong>in</strong> syngas can be reached only at high temperatures <strong>of</strong> about1000°C• Higher concentrations <strong>of</strong> gases CO, H 2 , CH 4 were measured <strong>in</strong> the section with ahigher calorific value.• Dry<strong>in</strong>g <strong>of</strong> the coal did not <strong>in</strong>fluence gasification performance• In the gasification, it is necessary to m<strong>in</strong>imize the oxygen content <strong>in</strong> syngas. The moreoxygen <strong>in</strong> SYNGAS, the less calorific value <strong>and</strong> the lower its quality• The syngas volume flow is a l<strong>in</strong>ear dependence <strong>of</strong> the oxidiz<strong>in</strong>g mixture volume flow.• it is possible to control the gasification velocity by regulat<strong>in</strong>g the volume flow <strong>of</strong> theoxidiz<strong>in</strong>g mixture.


FEASIBILITY STUDY OF UNDERGROUND COAL GASIFICATION(UCG) FOR TKI• TKI signed an agreement withLawrence Livermore NationalLaboratory (LLNL), DOE (Department<strong>of</strong> Energy) to carry out a feasibilitystudy <strong>of</strong> UCG• The agreement was signed <strong>in</strong>January, 2011 <strong>and</strong> will last 14 months• The purpose <strong>of</strong> the agreement is toprovide the Sponsor (TKI) withconsultancy/advisory servicesregard<strong>in</strong>g the selection <strong>and</strong>characterization <strong>of</strong> a site where TKIcan establish an UCG plantThe Services consist <strong>of</strong> the follow<strong>in</strong>gtasks:• <strong>Development</strong> <strong>of</strong> a UCG program plan,• Analyses to identify favorable regions<strong>and</strong> sites for an UCG plant by us<strong>in</strong>gthe LLNL’s “Sweet-Spot” analysis;• Assistance with characterization <strong>of</strong> aselected site;• Additional technical support<strong>in</strong>clud<strong>in</strong>g technical analyses,assessments,• Project management <strong>and</strong> submission<strong>of</strong> the UCG Turkey Book, a reportconta<strong>in</strong><strong>in</strong>g the results <strong>of</strong> the works,assessments, reviews <strong>and</strong> analysismade while perform<strong>in</strong>g the abovementionedServices.


ACCOMPLISHED ACTIVITIES IN THE SCOPE OF UCG(UCG) FOR TKIFEASİBİLİTY PROJECT• A Workshop <strong>of</strong> Underground <strong>Coal</strong> <strong>Gasification</strong> was organised betweenApril 13-15th, 2011 with the participation <strong>of</strong> TKI Personnel, experts <strong>and</strong>academician• Second activity with respect to the project is technical survey <strong>and</strong>jeological study <strong>of</strong> TKI M<strong>in</strong>e Sites, which was realised between July 16-22.The Survey was evaluated <strong>in</strong> a meet<strong>in</strong>g headed by TKI General Director• The <strong>in</strong>formation <strong>of</strong> coal characteristics, drill<strong>in</strong>g logs, jeological survey etc.<strong>of</strong> 11 coal sites have been h<strong>and</strong>ed over LLNL• In order to underst<strong>and</strong> base <strong>and</strong> ceil<strong>in</strong>g susta<strong>in</strong>abilities <strong>of</strong> coal seams,works regard<strong>in</strong>g chemical <strong>and</strong> m<strong>in</strong>eralogical tests have been carried out byTKI


COAL GASIFICATION VIA PLASMA APLICATION• Plasma is ionized gas at hightemperatures like 5000-30000 °C• Ionization is separation <strong>of</strong> at leastone electron from atom ormolecole• Beside spread application <strong>of</strong>plasma technology <strong>in</strong> various<strong>in</strong>dusry fields, it is proven to useeffectively for coal gasification bywhich high-quality synthesis gas(syngas) (CO + H 2 ) could beproduced.• There is a high humidity rate <strong>in</strong> the<strong>Turkish</strong> lignite known as low-gradefuel. For this reason, us<strong>in</strong>g thenatural moisture <strong>in</strong> lignite is moresenseable for plasma gasificationtechnologyAdvantages <strong>of</strong> coal plasma gasification:• CO 2 concentration <strong>in</strong> gaseousproducts is higher than 12% <strong>in</strong>traditional gasification process <strong>of</strong> coalgasification while CO 2 concentrationis no more than 3% <strong>in</strong> the process <strong>of</strong>coal plasma gasification under arcplasma condition• Successful at gasification <strong>of</strong> low grade(high moisture) coal• Near-zero SO X , NO X , VOC, <strong>and</strong> Hgemissions• Easy to operate• There is no sample preparation step• Lower operat<strong>in</strong>g costs• Lower slag


LAB LAB SCALE SCALE PLASMA GASIFICATİON PROJECT• TKI has had a contract withANADOLU PLAZMA Company <strong>in</strong>Gazi Technopark to conduct labscale coal gasification studies• 1,5 <strong>and</strong> 3 Kw plasma gasifiersmanufactured at whichgasification experiments <strong>of</strong> highmoisture content TKI coals havebeen carried out• As seen <strong>in</strong> the table below,promis<strong>in</strong>g results have beenachieved. Particularly, highhydrogen content from steamplasmatron is very important• A patent has been obta<strong>in</strong>edfrom <strong>Turkish</strong> Patent Institutefor new steam gasificationsystem• It is planned that the contractwill be extended as cover<strong>in</strong>gmicrovawe gasificationGas chromatograhy (GC) results <strong>of</strong> steamplasmatron, air plasmatron <strong>and</strong> airplasmatron <strong>in</strong> the presence <strong>of</strong> steamGasesSteam plasmatron*Air plasmatron**Air plasmatron <strong>in</strong> thepresence <strong>of</strong> steam***Hydrogen 81.47 1.85 26.10Methane 6.95 0.05 0.38Ethane 0.24 - -Ethylene 5.94 - 0.53Carbondioxide 2.81 10.71 2.71Butane 0.16 - 0.057Nitrogen 0.98 86.0 70.06Carbonmonoxide 1.45 1.45 0.16Acetylene - 0.02 -* :Effect <strong>of</strong> steam plasma conditions on syn gas composition.** :Determ<strong>in</strong>ation <strong>of</strong> hydrogen ratio <strong>in</strong> the coal*** :Effect <strong>of</strong> steam on air-plasma gasification <strong>of</strong> coal.


LAB SCALE PLASMA GASIFICATION PROJECTSchematic draw<strong>in</strong>g <strong>of</strong> the top part <strong>of</strong> the setup forcoal gasification under plasma conditionsA PICTURE FROM 3Kw PLASMA COALGASIFICATION UNIT1276531. Stack2. Output <strong>of</strong> syn gas3. Clean<strong>in</strong>g particulessystem4. Slag5. Gas mixed chamber6. Reactor7. Plazmatron4


MicGAS <strong>Coal</strong> Biotechnology Project• TKI signed an agreement with ARCTECH-USA fordemonsration <strong>of</strong> Mic GAS Technology forapplication <strong>Turkish</strong> Lignite• First <strong>of</strong> all, lab studies on <strong>Turkish</strong> Lignites atARCTECH USA Labs• Now pilot demonsrations are underway <strong>in</strong> Turkey


METHANE PRODUCTION BY COAL BIOTECHNOLOGY• The MicGAS ProcessCovered under 7 U.S. PatentsManufactur<strong>in</strong>g plant <strong>in</strong> S. Boston,VA, USAProducts proven <strong>in</strong> U.S. <strong>and</strong>overseas


Rationale• Under anaerobic conditions natural microorganismsconvert a variety <strong>of</strong> carbon conta<strong>in</strong><strong>in</strong>g materials <strong>in</strong>tomethaneLANDFILLSCOAL MINES AND WASTE PILESANIMAL MANURESRICE PADDIESMUNICIPAL WASTEWATERLAKE BEDS• Microorganisms utilize carbon for growth <strong>and</strong> producebiogas <strong>and</strong> byproductsC 270 H 240 N 3 S 1 O 90 MICROBES CH3COOH + other VFAsCH 3 COOH METHANOGENS CH4 + CO2• Bioconversion is accomplished near ambient conditions,thus potentially economic approach <strong>of</strong> convert<strong>in</strong>g coal<strong>in</strong>to clean fuels <strong>and</strong> byproducts• MicGas <strong>Coal</strong> Biotechnology is applicable to all ranks <strong>of</strong>coal


MicGAS Mobile Pilot Unit Demonstration with <strong>Turkish</strong> Ligniteat Techno Park, Ankara-100 mesh ground coal slurry Nutrient mediumConcentrated Culture


Micas Mobile Pilot Unit Demonstration with <strong>Turkish</strong>Lignite at Techno Park, Gazi Univ., Ankara


Production <strong>of</strong> HUMASORB®-CS Beads from Humic Acid <strong>and</strong>Removal <strong>of</strong> Multiple Toxic MetalsMetal Removal by HUMASORB®-CS, Bursa-Turkey <strong>and</strong> USA(Initial = 10 ppm)


Actodemil Tests for Safe Destruction <strong>and</strong> Recycl<strong>in</strong>g <strong>of</strong>Explosives <strong>in</strong>to Fertilizer,MKEK-Turkey


actosol® Organic Humic Fertilizer from <strong>Turkish</strong> Lignite Approvedby <strong>Turkish</strong> Government


RESULTS OBTAINED FROM BIOTECHNOLOGY APPLICATIONTO TURKISH LIGNITES-Under Anaerobic Conditions, MicAn microbes successfullydegraded <strong>Turkish</strong> lignite coal to acetic acid.- MicAn microbes further converted acetic acid to biogas withmore than 70% methane.- Undegraded coal was further bio-converted to humic acidproducts for agriculture, environmental <strong>and</strong> military applications-The Bioconversion was accomplished near ambient conditions,thus potentially economic approach <strong>of</strong> convert<strong>in</strong>g coal <strong>in</strong>to cleanfuels <strong>and</strong> byproducts- Two sides are consider<strong>in</strong>g full scale implementation <strong>of</strong> Mic GASTehnology <strong>in</strong> Turkey


•EQUIPMENTS OF R&D LABORATORYINSTRUMENT BRAND-MODEL DESCRIPTION1INDUCTIVELY COUPLEDPLASMA OPTICAL EMISSIONSPECTROMETRYVARIAN ICP OES710 ESUsed for the detection <strong>of</strong> trace elements. It is a type <strong>of</strong> emission spectroscopy determ<strong>in</strong><strong>in</strong>g characteristic<strong>of</strong> a particular element. Increased accuracy by elim<strong>in</strong>at<strong>in</strong>g spectral <strong>in</strong>terferences, even with difficultsamples2ATOMIC ABSORPTIONSPECTROPHOTOMETERVARIAN AASSPECTRA A 240 ZEEMAN,SPECTRA A 240 FS FLAMEAA <strong>in</strong>strument <strong>in</strong>cludes flame <strong>and</strong> furnace system. It is a spectroanalytical procedure for the qualitative<strong>and</strong> quantitative determ<strong>in</strong>ation <strong>of</strong> chemical elements3 XRF SPECTROMETERSBRUKER-S8 TİGERIt is used for determ<strong>in</strong>ation <strong>of</strong> the chemical composition <strong>of</strong> many types <strong>of</strong> materials <strong>and</strong> wide range <strong>of</strong>elements; suitable for solid, liquid <strong>and</strong> powdered samples. It can also measure concentrations4FOURIER TRANSFORM INFRAREDSPECTROPHOTOMETERSHIMADZU FTIR -IR AFFINITY1Identification <strong>of</strong> unknown chemicals . It is used to obta<strong>in</strong> an <strong>in</strong>frared spectrum <strong>of</strong> absorption, emission <strong>of</strong>a solid, liquid or gas. FTIR spectrometer simultaneously collects spectral data <strong>in</strong> a wide spectral range5 UV-VIS SPECTROPHOTOMETERSHIMADZUUV 1800UV-VIS spectrophotometers sh<strong>in</strong>e visible or UV light onto a chemical, metal, or non-metal sample(usually a solution) <strong>and</strong> measure the amount <strong>of</strong> each component from the degree <strong>of</strong> absorption <strong>of</strong> thelight6 GAS CHROMATOGRAPHY AGILENT GC It analyzes any type <strong>of</strong> complex gas stream <strong>and</strong> hydrocarbon analyses7 Micro-GC GAS ANALYZERAGİLENTSRA A-3000It analyzes any type <strong>of</strong> complex gas stream8BET SURFACE AREA, PORE SIZE,ADSORPTION INSTRUMENTMICROMERITICSASAP 2020It produces BET surface area results us<strong>in</strong>g the classical helium void volume method, <strong>and</strong> also a pore sizeanalyzer capable <strong>of</strong> measur<strong>in</strong>g both adsorption <strong>and</strong> desorption isotherms <strong>in</strong> a few hours9 MERCURY POROSIMETRY10 GAS PYCNOMETERMICROMERITICSAUTOPORE IV 9500MICROMERITICSACCUPYC 1340It characterizes a material’s porosity by apply<strong>in</strong>g various levels <strong>of</strong> pressure to a sample immersed <strong>in</strong>mercuryMeasur<strong>in</strong>g the absolute density <strong>and</strong> the volume <strong>of</strong> a rigid, solid material <strong>of</strong> simple geometry straightforward11 DENSITY METER ANTON PAAR Measurement the density <strong>of</strong> liquid <strong>and</strong> gas samples12 MERCURY ANALYZERTELEDYNE LEEMAN LABSHYDRA – CIt measures direct analysis <strong>of</strong> total mercury <strong>of</strong> the solid or liquid samples13 CHNS ELEMENTAL ANALYZER LECO TRUSPEC Determ<strong>in</strong>ation <strong>of</strong> carbon, hydrogen, nitrogen <strong>and</strong> sulfur elements14 CALORIMETER LECO AC 600 Determ<strong>in</strong>ation <strong>of</strong> the thermal value <strong>of</strong> coal sample15 ASH FUSİON TESTER LECO AF 700It is used for measur<strong>in</strong>g ash fusion temperature, <strong>in</strong>clud<strong>in</strong>g deformation po<strong>in</strong>t (DT), s<strong>of</strong>ten<strong>in</strong>g po<strong>in</strong>t (ST),hemisphere temperature (HT) <strong>and</strong> float<strong>in</strong>g temperature. (FT) <strong>in</strong> coal ash


CONCLUSION• Turkey has to utilize coal deposits, which are one <strong>of</strong> the mostimportant energy resources <strong>of</strong> the country, effectively <strong>and</strong>environment friendly,• Therefore, <strong>Turkish</strong> <strong>Coal</strong> <strong>Enterprises</strong> (TKI) has undertaken severalgasification R&D projects that are <strong>in</strong> form <strong>of</strong> feasibility study, labscale <strong>and</strong> pilot scale <strong>and</strong> established an admirable R&D laboratory,• So far, some encourag<strong>in</strong>g results have been achieved from theprojects <strong>and</strong> TKI also hopes that better <strong>and</strong> beneficial results will bereached at,• TKI expects that R&D projects will lead to <strong>in</strong>novations so that Turkeywill have commercial gasification plants <strong>in</strong> medium <strong>and</strong> long periodthat solves energy problem considerably.


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