Energy from Biomass - NOVIS GmbH

Energy from
Biomass
novis
ENERGY DEVELOPMENT PARTNERS

The goal
The goal is to produce energy
based on renewables. We plan,
build and initiate biogas plants that
produce thermal or electric energy
out of organic waste. The plants
provide you with a continuous
supply of energy at stable prices
while organic waste is disposed
safely.
You can purchase a successfully operating plant and sell your own
electricity. We will train you and your employees to safely operate the
plant.
Reach this goal with our services
Consulting and planning
• During the first meeting you
receive a lot of know-how about
bio-energy.
• With our experts, we examine
the preconditions and plan the
approach and realisation.
Construction and initiation
• Upon assignment, we build a
high quality biogas plant to
produce renewable energy.
• The plant will be put into
operation approximately six
months after the signing of the
contract.
© novis GmbH • Roentgenstrasse 15 • D-72108 Rottenburg (Germany) • www.novis.de •
Operation of a biogas plant
• In the initial phase, NOVIS or a
subcontractor will operate the
plant and provide regular
maintenance.
• We train your staff and transfer
operation in your hands as soon
as you wish.
Source of income for you
• You receive the opportunity to
own a reliable source of income
with qualified employees.
• This enables you to produce
beneficial energy and sell the
surplus to official power
suppliers.
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A) Energy generation through
fermentation
In biogas plants a chemical process converts humid organic matter*
into renewable energy. Biogas mainly consists of methane gas
produced by the fermentation and digestion of agricultural products,
vegetable waste or manure.
This gas can be used
1. to power generators that produce electricity
2. for thermal applications like cooking or steam production
Organic
Waste
Fermentation
Bio-energy process
* Please note: Due to differences regarding biological varieties and producing region, biomass has to
be tested to confirm its aptitude for the production of biogas.
Gas
Residues can be
used as fertilizer,
put back into
digester or burnt
© novis GmbH • Roentgenstrasse 15 • D-72108 Rottenburg (Germany) • www.novis.de •
Generator
Power
Heat
© novis GmbH
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NOVIS is a partner of the so-called ‘Rottaler model’ in Germany. The
‘Rottaler model’ has developed a high performance, temperature
controlled biogas plant that combines three chemical processes:
hydrolysis, acidification and methanisation.
This technology has proven its superior stability and efficiency in
Europe, Africa and South East Asia. It guarantees a 20 % higher
biogas yield from the feedstock in comparison to other biogas plants. In
addition, this technology is easily adaptable to the needs and
conditions of rural areas, especially in developing countries.
Manure Storage
Biomass
Digester 1 Digester 2 Final storage
Scheme: Exemplary structure of a ‘Rottaler model‘ biogas plant (large scale)
© novis GmbH • Roentgenstrasse 15 • D-72108 Rottenburg (Germany) • www.novis.de •
CHP
A typical biogas plant consists of two digesters and one final storage
tank. The biomass is pumped in the first digester where bacteria start
converting and cracking the organic compounds. The conversion
continues in the following digester where the bacteria start producing
methane.
For small scale use: The gas is either used for cooking or for
operating a generator to produce electricity.
For big scale use: This methane gas is burned in the combined
heating and power unit (CHP) and generates electricity and heat.
The system is fully automated. The digestion process is air sealed
and closely monitored to ensure a maximum process control and
continuous optimization.
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The ‘Rottaler model’ offers biogas plants for
1. small scale use, e.g. to provide schools or small settlements with 4
to 6 households with cooking gas and electricity. A well-proven size
with a capacity of about 10 Kilowatt is available as a container
solution or can be installed in buildings, open-air or subterraneously.
Small scale biogas plant in Mombasa, Kenya
Foto: BME GmbH
2. large scale use up to a capacity of 2 Megawatt, e.g. near agroindustrial
businesses, animal breeding or for urban waste recovery.
In such cases, the produced energy is often used to provide
companies with heat, steam, cooling energy or electricity and to sell
electricity to the local power supplier.
Large scale biogas plant in Ubonthani, Thailand
Foto: BME GmbH
© novis GmbH • Roentgenstrasse 15 • D-72108 Rottenburg (Germany) • www.novis.de •
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B) Energy generation through
pyrolysis
In gasification plants, dry biomass is partially burned. Through the
chemical process of pyrolysis inside the gasifier, a gas is created.
This gas is filtered and used to power generators, which in turn
produce electricity.
Air
Biomass
Drying zone
Pyrolysis zone
Combustion zone
-thethroat
Reduction zone
Ash removal
Scheme: Phases of gasification in
a gasifier
Gas
Nut shells
© novis GmbH • Roentgenstrasse 15 • D-72108 Rottenburg (Germany) • www.novis.de •
Air
Wood
Animal
droppings
Gas
Power
Reed
Scheme: Procedure of power
production through pyrolysis
© novis GmbH
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The gasification plant is a partially automated system. Biomass*
containing less than 20 % moisture is used e.g. wood, straw, reed,
nutshells etc. The biomass is grinded in a press and then placed
automatically in a reactor (1). There, the biomass is burned
incompletely (2) and the ash is removed automatically. The emerging
synthetic gas (3) is piped into a filter for cleaning (4) and then into a
compressor (5). The compressed gas replaces diesel fuel to operate
an electric generator (6). Thus, heat and electricity are created.
1. Biomass
2. Reactor
3. Syngas
4. Filter
© novis GmbH • Roentgenstrasse 15 • D-72108 Rottenburg (Germany) • www.novis.de •
5. Compressor
Scheme: Structure of a pyrolysis biogas plant
Example of a biogas plant in India
Heat
6. Electric
generator
Power
* Please note: Due to differences regearding biological varieties and producing region, biomass has
to be tested to confirm its aptitude for gasification
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C) Waste incineration
In waste incineration plants waste is burnt in a furnace.
The thermal energy resulting from incineration is used for generating
steam or for other thermal applications.
Electricity is produced by a steam turbine or steam motor.
Possible input material includes domestic waste, industrial waste,
chemical waste and hospital waste. All hazardous waste is sanitized
through the combustion temperature of up to 1200°C.
Waste
Firing System
Automatic Ash Removal
Gas Cooling
© novis GmbH • Roentgenstrasse 15 • D-72108 Rottenburg (Germany) • www.novis.de •
Steam
Water
Ash
Gas Filtration
Slag
Scheme: Waste incineration - Use of heat - Cleaning of exhaust gas
Clean
Gas
© novis GmbH
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Process description
The input material is transported to the combustion chamber by an
automated system. Input amounts are regulated through an interlock
system. The material is burned in a multistage combustion chamber.
The temperature of the combustion chamber is around 1200 °C.
The ash resulting from the process is continuously removed from the
holding tank and transported to outside containers.
An automated plant control system measures the incineration process.
All important parameters are displayed on a separate control screen.
Waste input
Combustion chamber
Post-combustion chamber
Scheme: Structure of the combustion system
Example of an incineration plant in Germany
© novis GmbH • Roentgenstrasse 15 • D-72108 Rottenburg (Germany) • www.novis.de •
Ash removal
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Your advantages
• Biomass wastes are recycled and
used for permanent power production
at your premises.
• Downtimes during power outages
are reduced or avoided altogether.
• You receive the necessary amount of power
at a stable price.
• Energy costs and CO² emissions
are reduced significantly.
• A diesel generator is no longer necessary.
• A solid and reliable partner is by your side.
• You can count on safe and high quality energy provision.
• You obtain a new source of income by selling the production surplus.
• We deliver the know-how and build the biogas plant on your
premises. Therefore we choose the most efficient technology or
provide a combination of different technologies according to the
composition of the biomass being available on site:
- Biogas generation through fermentation
- Biogas generation through pyrolysis
- Energy generation through incineration of different kinds of waste
Scalable capacities
NOVIS provides energy plants with scalable capacities:
• Fermentation: 10 kW up to several MW
• Pyrolysis: 20 kW up to several MW
• Incineration: up to 14 MW
© novis GmbH • Roentgenstrasse 15 • D-72108 Rottenburg (Germany) • www.novis.de •
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How to proceed
Preliminary
assessment
Expert
analysis
Precontract
You contact us with your inquiry. We send you a
questionnaire to collect the necessary data for preliminary
assessment.
Our experts will examine the preconditions and
details on-site.
You receive a preliminary feasibility calculation for the
construction of a biogas plant. A pre-contract for further
engineering services is signed.
NOVIS engineers will visit the site to evaluate technical data.
Based on the data you receive the technical drawings and
exact calculations for the plant. The contract for building a
biogas plant on your premises is signed.
Start of local construction works. The plant is ready for
operation approximately six months after signing the final
contract. We will provide training of your employees and
regular maintenance.
© novis GmbH • Roentgenstrasse 15 • D-72108 Rottenburg (Germany) • www.novis.de •
Technical
Assessment
& Contract
Building &
Operation
of plant
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Your Partner
novis
ENERGY DEVELOPMENT PARTNERS
NOVIS GmbH
NOVIS GmbH was founded in 2002 as a subsidiary of ILTIS GmbH to
realize strategies and projects in the energy sector. NOVIS
specializes in the field of energy production from all kinds of biological
waste. We use different technologies and adopt the most promising
solution according to the special needs of your project. To guarantee
success in all our international projects we co-operate with various
experts from Germany, Canada and India who stand for technological
leadership in their respective sectors. Over the last ten years, the
technologies we use have proven their efficiency and functionality in
more than 400 different projects worldwide.
NOVIS GmbH
Energy Development Partners
Roentgenstraße 15
72108 Rottenburg
GERMANY
© novis GmbH • Roentgenstrasse 15 • D-72108 Rottenburg (Germany) • www.novis.de •
Tel: +49 7472 9839-0
Fax: +49 7472 9839-22
E-mail: dialog@novis.de
Internet: www.novis.de
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