煤与生物质快速流化床共热解的协同效应

Synergistic Effect of Co-pyrolysis of Coal and Biomass on Fast Fluidized Bed

在自主搭建的千克级流化床装置上进行了油房梁煤(YFC)与秸秆(JG)的共热解反应,考察了掺混比和温度对共热解油品收率和品质的影响.结果表明:在压力为0.1MPa,输送气量为15L/mim,流化气量为25L/min,下料速度为1.5kg/h的条件下,当油房梁煤与秸秆以0.7∶0.3的质量比混合,温度为600℃,反应气氛为N_2时,收率较高,为19.18%,此时对应的协同效应度最大,为35.87%,且共热解油品较煤焦油硫的质量分数由0.60%降低至0.31%,酚系物主要集中在苯酚(16.82%)、对甲酚(21.92%)和邻苯二酚(16.56%)等11种酚类物,便于油品中酚系物的提取和利用.

The pyrolytic reaction of YFC, straw and their mixture, and the effect of temperature and mixing ratio on the oil yield and quality were investigated on a self-built kilogram class fluidized bed. The results show that the corresponding highest oil yield is 19. 18% with reaction pressure 0.1 MPa, conveying gas 15 L/mim, flow gas 25 L/min, the feeding speed 1.5 kg/h, mixing ratio 0. 7 ： 0. 3 （mass ratio）, temperature 600 ℃, reaction atmosphere N2, and synergistic effect has a maximum value 35.87%. Then the corresponding sulfur content （mass fraction） reduces to 0. 31% from 0. 60%, and phenolic compounds are mainly concentrated in phenol （16. 82%）, p-cresol （21. 92%）, catechol （16. 56%） and other 11 kinds of phenolic compounds for extraction using.