Patent ID: 7228806

Claim:
A biomass gasification system designed for combusting biomass material containing silica including straw, comprising: a fuel magazine capable of storing a volume of said biomass material; a disintegration unit in communication with said fuel magazine to receive said biomass material from said fuel magazine; a primary combustion chamber creating a primary combustion of biomass material to create a producer gas, wherein said biomass material contains silica; a mechanical agitator within said primary combustion chamber to mix said biomass material during said primary combustion; a feeder unit including a conveyor in communication with said primary combustion chamber for delivering biomass material from said disintegration unit into said primary combustion chamber; an air distribution system for forcing air beneath said rotating grate through said plurality of openings; an ash disposal unit positioned beneath said mechanical agitator for removing collected ash from said primary combustion chamber; a secondary combustion chamber containing a secondary combustion of said producer gas, wherein said second combustion chamber is fluidly connected to said primary combustion chamber; an oxygen mixer fluidly connected between said primary combustion chamber and said secondary combustion chamber to introduce additional oxygen into said producer gas emitted from said biomass material to increase a temperature of said second combustion to at least 2,000 degrees Fahrenheit; a heat exchanger fluidly connected to said secondary combustion chamber; and a silica collector positioned at a bottom of said secondary combustion chamber for collecting liquid silica, wherein silica collects on an inner wall of said secondary combustion chamber and drains into said silica collector.