神木烟煤热解产物分布及主要元素的迁移规律  

Distribution of Products and Migration of Main Elements during Pyrolysis of Shenmu Bituminous Coal

作　　者：石振[1,2] 成帅[1,2] 陈兆辉[1,2] 张建岭[1] 高士秋[1] 许光文[1] SHI Zhen CHENG Shuai CHEN Zhao-hui ZHANG Jian-ling GAO Shi-qiu XU Guang-wen(Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China)

机构地区：[1]中国科学院过程工程研究所多相复杂系统国家重点实验室,北京100190 [2]中国科学院大学化学与化工学院,北京100049

出　　处：《过程工程学报》2016年第5期802-811,共10页The Chinese Journal of Process Engineering

基　　金：国家自然科学基金资助项目(编号:21376250)

摘　　要：在石英管固定床反应器中对神木烟煤进行热解实验,研究了热解温度对煤热解产物分布和C,H,O,N,S元素在热解产物中分配的影响.结果表明,在500-900℃范围内,随热解温度升高,半焦产率下降,气体产率增大,焦油产率先增大后降低,600℃时达最大值9.2%（ω）;半焦中C,H,O和N元素迁入量下降,S元素迁入量先降低后略有增大,在700℃时达最小值67.0%;热解气中C,H,O元素迁入量增大,N元素和S元素迁入量先增大后减小,分别在800和600℃时达最大值28.8%和27.9%;焦油中C,H,O元素迁入量先增大后降低,均在600℃时分别达最大值9.3%,14.0%和7.2%,N元素和S元素迁入量缓慢增加;热解水中H和O元素迁入量先增大后略有降低,在700℃时分别达最大值14.5%和48.5%.The effect of pyrolysis temperature on distribution of products and migration of main elements （C, H, O, N, S） during pyrolysis of Shenmu bituminous coal was investigated in a fixed-bed quartz reactor. The results showed that with the pyrolysis temperature increasing from 500 ℃ to 900 ℃, the char yield decreased and the gas yield increased continuously, while the tar yield increased to a maximum of 9.2%（ω） at 600 ℃ and then declined. When the pyrolysis temperature increased, the transfer ratios of C, H, O and N in the char decreased, and the transfer ratio of S in the char decreased firstly and then increased with the minimum ratio of 67.0% at 700 ℃. With the increase of temperature, the transfer ratios of C, H and O in the gas increased, and the transfer ratios of N and S in the gas increased firstly and then decreased at 800 and 600 ℃ with the maximum values of 28.8% and 27.9%, respectively. The transfer ratios of C, H and O in the tar increased firstly to the maximum values of 9.3%, 14.0% and 7.2% at 600 ℃, respectively, and then decreased, while the transfer ratios of N and S slightly increased with the pyrolysis temperature increasing. The transfer ratios of H and O in the water increased firstly to the maximum values of 14.5% and 48.5% at 700 ℃, respectively, and then decreased slightly with pyrolysis temperature increasing.

关 键 词：固定床 热解 热解产物 元素迁移 

分 类 号：TQ530.2[化学工程—煤化学工程]