石油学报(石油加工) ›› 2019, Vol. 35 ›› Issue (5): 981-987.doi: 10.3969/j.issn.1001-8719.2019.05.020

• 研究报道 • 上一篇    下一篇

宁东红石湾煤与生物质共热解协同机制

范辉, 任倩, 冯彩云, 李平, 郭庆杰, 马清祥   

  1. 宁夏大学 化学化工学院 省部共建煤炭高效利用与绿色化工国家重点实验室,宁夏 银川 750021
  • 收稿日期:2018-07-23 修回日期:2019-01-10 出版日期:2019-09-25 发布日期:2020-04-01
  • 通讯作者: 李平,女,教授,硕士,从事煤化工技术及化工过程模拟研究,E-mail:liping@nxu.edu.cn E-mail:liping@nxu.edu.cn
  • 作者简介:范辉,女,副教授,硕士,从事生物质与煤协同转化方面的研究,E-mail:fanhui@nxu.edu.cn

Co-Pyrolysis Synergistic Effect of HSW Coal and Biomass in Ningdong

FAN Hui, REN Qian, FENG Caiyun, LI Ping, GUO Qingjie, MA Qingxiang   

  1. School of Chemistry and Chemical Engineering, State Key Laboratory of HighEfficiency Coal Utilization and
    Green Chemical Engineering, Ningxia University, Yinchuan 750021, China
  • Received:2018-07-23 Revised:2019-01-10 Online:2019-09-25 Published:2020-04-01

摘要: 以宁东红石湾煤(HSW)与宁夏主要的生物质玉米秸秆(SWZ)作为原料进行共热解实验,通过热重分析发现,随着样品中生物质质量分数的提高,混合物样品的质量损失率逐渐增大。建立了HSW与SWZ共热解的单一反应动力学模型,计算了共热解动力学参数,各热解阶段的活化能为3~68 kJ/mol,SWZ的加入降低了反应的活化能,有利于HSW的热解。利用固定床热解实验装置,考察了不同的生物质掺混比、不同热解终温条件下HSW与SWZ共热解过程中产物的分布。当生物质掺混比由25%增至75%时,液体产物收率可由137%最大增至269%,气体产物收率可由285%最大增至401%。结果表明,共热解过程中SWZ与HSW有协同作用。

关键词: 热重分析, 固定床共热解, 协同作用, 红石湾煤(HSW), 玉米秸秆

Abstract: In this paper, the mixtures consists of different proportions of coal in Ningdong(HSW) and the local main cropscorn stover(SWZ) were used as the raw materials. According to the gravimetric analysis results, the loss of the mass is gradually increasing with the increase of the ratio of biomass. A single reaction kinetics model of copyrolysis is presented, and the activation energy is found in the range of 3-68 kJ/mol. The addition of SWZ reduces the activation energy, facilitating pyrolysis of HSW. Using fixed bed pyrolysis device, the product distribution of SWZ and HSW copyrolysis is investigated with different blend ratios and at different final temperatures. It is shown that when the mass proportion of biomass increases from 25% to 75%, the yield of liquid products increases from 137% to 269%, and that of gas products increases from 285% to 401%. The results confirm the cosynergistic effect of pyrolysis.

Key words: thermogravimetric analysis, fixed bed co-pyrolysis, synergistic effect, HSW, SWZ