本文采用管式炉研究了CaSO4对神华脱灰煤热解产物产率和煤气成分的影响.研究发现,CaSO4对神华脱灰煤热解的影响主要在较高温度条件下体现.CaSO4会与热解产物中的C、CO发生反应生成CaS和CO2,生成的CO2对H2、CH4、C2-C3的产生有抑制作用.虽然小部分CO会与CaSO4反应,但是CO2的增加对半焦气化反应的促进作用使得CO的产率还是有所增加.CaSO4还会与H2反应导致H2产率降低、热解水产率升高.“,”The influence of CaSO4 on Shenhua demineralized coal (SHD) pyrolysis was studied in a tubular reactor.Results show that the effect occurs mainly at high temperature.CaSO4 may react with C and CO in the pyrolysis products to produce CaS and CO2,and the producing CO2 might further inhibit the release of H2,CH4 and C2-C3 hydrocarbons from SHD pyrolysis.Although the reaction of CO with CaSO4 can consume a little CO,CO would still increase due to the promotion effect of CO2 on the char gasification reaction.CaSO4 can also react with H2,and this leads to a decrease in the yield of H2,while an increase in that of the pyrolysis water.