MILENA gasifier

MILENA is developed by ECN. It is a patented gasification technology that produces a good quality gas that can be used to generate power, heat, Substitute Natural Gas, or chemicals. The MILENA gasifier consists of two integrated reactors, producing an essentially N2-free producer gas.

MILENA benefits

MILENA is a compact designed fluidized bed gasifier. It consists of two reactors for pyrolysis/gasification and combustion respectively. Heat is transported by circulating bed material from the combustion reactor to the gasification reactor. The fuel for the combustion is the solid residue from the gasification reactor, possibly with additional fuels such as the tar from the OLGA tar removal system.

The main benefits of MILENA technology are:

• Complete conversion, no carbon-containing ash
• High efficiency
• Essentially N2-free producer gas, LHV ~ 15 MJ/nm3 (dry basis)
• No air separation unit (ASU) necessary
• Compact design
• Fuel flexible (tested with wood, demolition wood, lignite, grass, digestion residue, …)

Status

Since 2004, a lab-scale MILENA gasifier is operated as part of an extensive test park at ECN. Since November 2007, a pilot-scale MILENA is available at ECN, which is connected to pilot-scale cooler and OLGA gas cleaning units.