Saturday, December 17, 2011

Biomass gasification principle

Biomass gasification means incomplete combustion of biomass resulting in production of combustible gases, including Carbon monoxide (CO), Hydrogen (H2), Methane (CH4), CmHn, this mixture is called pyrolysis gas that can be used to run internal combustion engines, and generate CHP. The production of pyrolysis gas called gasification, is partial combustion of biomass (such as rice husk, woodchips, saw dust, crop stalk, coconut hull, bagasse, olive pomace etc.). The reactor is called gasifier.

C + O2 = CO2
2H2 + O2 = 2H2O
C + CO2= 2CO
C + H2O = CO + H2
CO + H2O = CO + H2
C + 2H2 = CH4
CO2 + H2 = CO + H2O

Water for gas cleaning and cooling can be used in a circulating way without environmental pollution after it’s treated througffh water treatment facilities such as sediment pond, and a little of making-up water required. The water pond for each unit of 200kw plant only covers about 50m2.

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