| Abstract The mild gasification of Shenmu coal is investigated in an experimental fluidized bed reactor.At the atmospheric pressure and 750 the total volatile yield of products increases with the gas residence time()in the range of 85s34s.When is 85s,the tar yield has a maximum of 454% then the tar yield decreased to 1% when the gas residence time is 182s.We also found that the increase of yields of gaseous products and the decrease of tar is ralated to the volitile matter of char.On the basis of above results,we can utilize reasonably distribute the organic parts of coal by means of adjusting carrier gas flow and controlling gas residence time . |
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1999, Vol. 16 
