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Title:
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Waste wood fueled gasification demonstration project
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Author(s):
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Published by:
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Publication date:
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ECN
Biomass, Coal and Environmental Research
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20-7-2011
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ECN report number:
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Document type:
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ECN-M--11-066
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Conference Paper
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Number of pages:
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Full text:
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10
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Download PDF
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Abstract:
The Energy research Centre of the Netherlands (ECN) has developed a new biomass gasification technology, called the MILENA technology. The MILENA gasification technology has a high cold gas efficiency and high methane yield, making it very suitable for gas engine application. Overall electrical efficiency of small scale installations (1 – 10 MWe) can be over 35%, using gas engines in combination with an Organic Rankine Cycle (ORC) and a biomass dryer, this is significantly higher than the efficiencies that can be achieved with steam cycles at this scale and at least competitive with other gasification concepts.
HVC is a modern and innovative waste and energy company. HVC converts waste streams which cannot be recycled into usable forms of energy. HVC has a large waste wood boiler of almost 30 MWe in operation. HVC has decided to join ECN with the development, demonstration and implementation of the MILENA Bio-CHP technology. HVC and ECN plan to build a 11.6 MWth MILENA gasifier in combination with OLGA gas cleaning. The installation will be located in Alkmaar (the Netherlands).
Originally is was the intention to use the gas in a gas engine and to produce green electricity and heat. Due to changing subsidies in the Netherlands the gas will now be upgraded to natural gas quality, which can be injected in the gas grid and will be sold as green gas. In other countries the subsidies to produce green heat and green electricity are still attractive. Several projects using the MILENA and OLGA technology in combination with gas engines are in the initial phase of development. The typical scales vary between 1 and 4 MWe.
The basic engineering of the 11.6 MWth MILENA + OLGA demo plant was executed by Dahlman and ECN in 2010. Dahlman (www.dahlman.nl) is the supplier of the OLGA gas cleaning technology. Wood will be used as fuel. An extensive test program using demolition wood as fuel was done in the ECN pilot plant in order to generate the required engineering data. The project was delayed because of changes in the Dutch subsidies for green heat, electricity and gas. A new application for subsidy on green gas will be filed at the end of 2011. Start of construction of the 11.6 MWth demonstration plant producing green gas is scheduled for 2012.
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