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A bench-scale fluidized bed reactor is used to investigate H2S evolution and analyze various factors influencing sulfur distribution in gas and semi-coke during coal pyrolysis. The tests results show rising temperature increases the amount of H2S evolution and partial pressure of hydrogen enhances hydrogen sulfide release during coal decompose at 800-950??C. While apart from other researches results,...
Thermal fragmentation of Jixi bituminous coal was analyzed by using a bench-scaled fixed bed. The results show specific characteristics of fragmentation during pyrolysis at 750-850??C. Raising temperature favors increasing the fragmentation ratio (Nf) and the fragmentation index (Sf), while hardly benefits the primary fragmentation rate (Pf) going up. With particles increasing, Particles of 6-8 mm...
An experimental study on sulfur release and adsorption during coal partial gasification and combustion is conducted in a 1MW circulating fluidized bed (CFB) poly-generation system. Limestone is added to gasifier as a sorbent of sulfur produced, where part of the sorbent flowed through a bi-directional returning feeder into combustor and another part returned to gasifier. The results show that limestone...
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