【摘要】 为验证神木三江方炉干馏工艺生产兰炭的可行性,以神木烟煤为研究对象,通过分析煤样及其热解产物的基本性质,结合三江方炉结构和工艺流程,计算了神木烟煤干馏生产兰炭过程中的热量平衡和物料平衡,得到各气体体积计算公式及各气体趋于平衡的数据。结果表明,1 t烟煤干馏所需热量1 299.08 MJ,可由各干馏产物的炉内换热634.83 MJ和部分干馏气(23.37 m~3)的燃烧热664.25 MJ来提供,且约有1/2干馏气富余。干馏炉稳定运行时,总进料约1 406 kg,总输出约为1 390 kg,约16 kg的损失。总输入和输出气体约238 m~3和276 m~3,循环气体约94 m~3,助燃空气和放散气体约为144 m~3和182 m~3,各类气体基本达到动态平衡稳定。更多还原

【Abstract】 In order to verify the feasibility of retorting process of Shenmu Sanjiang type rectangular gas combustion retort( SJ-retort) for semi-coke producing,Shenmu bituminous coal( SM coal) was taken to study the heat and mass balance during retorting process of SJ-retort combined with the basic properties analysis of SM coal,pyrolsis product,structure and process of SJ-retort.Results show that the heat requirement of 1 t SM coal retorting( 1 299. 08 MJ) can be satisfied by its heat transfer of retorting products( 634. 83 MJ) and retorting gas( 23. 37 m~3) combustion( 664.25 MJ),and 1/2 surplus retorting gas is obtained.In steady state of retorting system,total feed and totl output are 1 406 and 1 390 kg,which loss is 16 kg.Calculated results also reveal that the total input gases,output gases,recycle gases,new input air and release gases at steady state of retorting system are 238,276,94,144 and 182 m~3,respectively indicating a dynamic equilibrium of various types gases.更多还原