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过程工程学报 ›› 2016, Vol. 16 ›› Issue (5): 802-811.DOI: 10.12034/j.issn.1009-606X.216179

• 过程与工艺 • 上一篇    下一篇

神木烟煤热解产物分布及主要元素的迁移规律

石振1,成帅1,陈兆辉1,张建岭1,高士秋2,许光文1   

  1. 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
    2. 中国科学院过程工程研究所多相反应重点实验室
  • 收稿日期:2016-04-11 修回日期:2016-05-10 出版日期:2016-10-20 发布日期:2016-10-14
  • 通讯作者: 高士秋 sqgao@ipe.ac.cn

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

SHI Zhen ,CHENG Shuai ,CHEN Zhao-hui ,ZHANG Jian-ling ,GAO Shi-qiu ,XU Guang-wen   

  1. Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences
  • Received:2016-04-11 Revised:2016-05-10 Online:2016-10-20 Published:2016-10-14
  • Contact: GAO Shi-qiu sqgao@ipe.ac.cn

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被引次数

2

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%.

关键词: 固定床, 热解, 热解产物, 元素迁移

Abstract: 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%(?) 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.

Key words: fixed bed, pyrolysis, pyrolysis products, elements migration

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