Pressurised Fluidised-Bed Gasification Experiments with Biomass, Peat and Coal atVTT in 1991-1994. Part 3. Gasification of Danish Wheat Straw and Coal

摘要

Fluidized-bed air gasification of three different Danish straw feedstocks andColombian bituminous coal is studied. The test program was divided into two different modes of operation. Firstly, the usability of straw as the only feedstock was investigated by operating the gasifier at relatively low temperature normally used in biomass gasifiers. In this operation mode the main aim was to find out the limits for gasification temperatures, set by the sintering behavior of the straw. Secondly, the use of straw as an additional feedstock in a fluidized-bed coal gasifier was examined by operating the gasifier at about 1,000 deg C with different ratios of straw and coal feeding.