不同粒径华亭煤的热解研究  

Study on Pyrolysis of Huating Coal with Different Particle Sizes

作　　者：陈锦中 李健[1,2] 亢玉红[1,2] 闫龙[1,2] 

机构地区：[1]榆林学院化学与化工学院,陕西榆林719000 [2]陕西省低变质煤洁净利用重点实验室,陕西榆林719000

出　　处：《广东化工》2016年第11期46-47,31,共3页Guangdong Chemical Industry

基　　金：陕西省低变质煤洁净利用重点实验室开放基金项目;榆林粉煤成型制型焦实验研究(2014SKL-DBM018)

摘　　要：利用铝甑干馏装置对华亭煤进行热解实验,研究分析了粉煤粒径对焦油产率的影响,同时对粉煤、半焦的孔径和元素含量进行了分析检测。结果表明,随着粉煤粒径的减小,煤焦油产率先增加后减小,原煤及其半焦孔径均呈增大趋势,粒径在120~160目的粉煤热解后煤焦油产率最高,达到5.42%。这说明具有一定孔径的粉煤在热解过程中对煤焦油的析出有较大影响,但粉煤磨制过程颗粒间的摩擦碰撞所导致的挥发分的析出是煤焦油产率降低的主要原因。此外,元素分析结果表明硫元素含量随着粉煤粒径的减小而增加,文中阐述了硫元素含量对煤焦油产率影响的机理。The used of Fischer Assay to Huating coal pyrolysis, studied and analyzed the effects of pulverized coal particle size on the tar production rate, the aperture of pulverized coal, carbocoal and element content were analyzed. The results showed that with the decreased of the pulverized coal particle size, coal tar to increased firstly then decreased, the raw coal and carbocoal aperture all showed a trend of increase, particle size ranges from 120 to 160 mesh, tar yield of pyrolysis was the highest, and tar yield was 5.42 %. This showed the aperture of pulverized coal in the pyrolysis process of coal tar had a great influence on the precipitation, but the pulverized coal preparation processed, the interparticle friction collision caused by the volatile precipitation was the main reason for reducing coal tar yield. In addition, the elemental analysis results showed that the sulfur content increased with the decreased of the particle size, the paper expounded the influence of sulfur content on the coal tar yield mechanism.

关 键 词：热解 粒径 焦油产率 孔径 

分 类 号：TQ536.9[化学工程—煤化学工程]