Preliminary status note: Thermal biomass conversion technologies ...

Recommendations

Info

Haldor Topsoe is involved in several international projects to provide synthesis equipment for the production of liquid fuels based on gas from entrained flow reactors. 2.1.4. Perspectives 4 Entrained flow gasification is in most cases used in relatively large plants. To obtain optimal operation the entrained flow reactor is often combined with an oxygen production plant and the gasifier is pressurized. The largest potential of the technology in a bio based society is probably as large integrated biomass gasification plants that can provide one or several different products as electricity, transport fuels, process heat, natural gas and chemicals. Energy.Dk (Vestervang 2011) has proposed that a flexible gasification plant is integrated with wind mill production. The plant will then supply synthetic gas to the gas net when there is a surplus of wind mill electricity, and provides power when the wind mills are stopped. The main limitations of the biomass entrained flow technology compared to other gasifier types are that relatively large and complicated plants are used (pressurized reactor and oxygen plan), while advantages are a high fuel flexibility and a tar free product gas. Most system studies shows that the total efficiency of pressurized gasification based liquid fuel production, judged by the amount of transport work per feedstock consumed, are generally better for gasification processes than for bio-‐ethanol or bio-‐diesel systems (Ahrenfeldt et al. 2011). A challenge for the development of biomass entrained flow gasification technology is the development of efficient fuel feeding technology of biomass into a pressurized rector. One way to do this is by obtaining a slurry of char and tar from a flash pyrolysis unit and then pump this high energy density slurry into the reactor. Another important issue is appropriate control of ash behavior in the gasifier. Relevance and strong positions in Denmark: -‐ The Danish energy system with many wind mills makes it appropriate to build large flexible entrained flow gasifier plants, which can supply multiple energy products -‐ DTU has a large research group (CHEC) that have the expertise and experimental facilities to perform research and development with respect to entrained flow gasification -‐ TK energy works on developing a small scale cyclone entrained flow gasifier -‐ Haldor Topsoe have several activities related to gas conditioning, gas cleaning and synthesis of liquid fuels that is tested on biomass gasifier plants (this is explained in more detail in the section : Synthesis of transport fuels using gasification gas) 2.1.5. Bibliography (lui et al. 2010) Liu, K., Cui, Z., and Fletcher, T.H., Coal Gasification, in Hydrogen and Syngas Production and Purification Technologies, K. Liu, C. Song, and V. Subramani, Editors. 2010, A John Wiley & Sons, Inc., Publication. p. 156-‐218. (Ahrenfeldt et al. 2011) Jesper Ahrenfeldt, Ulrik Birk Henriksen, Janus Münster-‐Swendsen, Anders Fink, Lasse Røngaard Clausen, Jakob Munkholt Christensen, Ke Qin, Weigang Lin, Peter Arendt Jensen, Anker Degn Jensen. Final report EFP06. Production of methanol/DME from biomass. National Laboratory for Sustainable Energy (Risø DTU), 2011.
(Hansen 2011) Morten Tony Hansen. Strategy for research, development and demonstration of thermal biomass gasification in Denmark. Force technology, Energinet.dk, EUDP. 2011. (Qin et al. 2012) K. Qin, W. Lin, P. A. Jensen, A. D. Jensen. High-‐temperature entrained flow gasification of biomass. Fuel, 2012, vol 93, 589-‐600. (FIB 2011) FIB, Forskning I Bioenergi, Brint & Brændselsceller. Nummer 38, December 2011. (Clausen 2011) Lasse Røgaard Clausen. PhD thesis. Design of novel DME/methanol synthesis plants based on gasification of biomass. DTU Mechanical Engineering 2011. 5 (Drift et al. 2004) Van der Drift, A. Boerrigter , H. Coda, B. Cieplik, M , K. Hemmes, K. Entrained flow gasification of biomass; Ash behavior, feeding issues, system analysis, report: ECN-‐C—04-‐039. Petten, ECN, 2004. (CHOREN 2012) Homepage of CHOREN, http://www.choren.com (Vestervang 2011) Steen Vestervang. Presentation: Hvorfor er VE-‐gas vigtig i den fremtidige energiforsyning ?. Seminar om den grønne gas – Forgasningsgas 20. december 2011 (Higman and Burgt 2008) C. Higman, M. Burgt. Gasification, Elsevier Inc. 2008.
Page 1 and 2: 1 5/4 2012 Preliminary status note:
Page 3: 2.1. Entrained flow gasification 2.
Page 7 and 8: 2.2.4. Perspectives The PYRONEER co
Page 9 and 10: 9 Figure 1: Simplified flow sheet o
Page 11 and 12: 2.4.3. Danish strong positions and
Page 13 and 14: 2.5. Synthesis of transport fuels u
Page 15 and 16: 15 years. Currently it may require
Page 17 and 18: 2.6. Hydrogenation of flash pyrolys
Page 19: 9. Haldor Topsøe AS, inventor; Hyd

Preliminary status note: Thermal biomass conversion technologies ...

Create successful ePaper yourself

Delete template?

Save as template?