DOWNDRAFT FIXED-BED GASIFIER FOR GENERATING A PRODUCT GAS FROM POURABLE BIOMASS PARTICLES

摘要

A downdraft fixed-bed gasifier for producing product gas from pourable biomass particles includes a gasifier container, a gasifier component, a feeder, an air supply inlet, a grate and a product gas vent. The gasifier container has a larger diameter than does the gasifier component. The lower open end of the gasifier component extends down into the gasifier container. The feeder is adapted to receive biomass particles into the upper closed end of the gasifier component. Combustion air is fed into the gasifier component through the air supply inlet located near the upper closed end. The grate supports the biomass particles and is disposed in a lower portion of the gasifier container below the lower open end of the gasifier component. Product gas generated from oxidizing the biomass particles exits the gasifier container through the product gas vent located in the side of the container below the level of the grate.