东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2019, Vol. 40 ›› Issue (8): 1110-1114.DOI: 10.12068/j.issn.1005-3026.2019.08.009

• 材料与冶金 • 上一篇    下一篇

吸附强化焦炉荒煤气重整制氢的热力学分析

谢华清， 赵向南， 于庆波， 秦勤   

  1. (东北大学 冶金学院， 辽宁 沈阳110819)
  • 收稿日期:2018-08-08 修回日期:2018-08-08 出版日期:2019-08-15 发布日期:2019-09-04
  • 通讯作者: 谢华清
  • 作者简介:谢华清(1987-)，男，山东菏泽人，东北大学副教授，博士； 于庆波(1966-)，男，山东莱阳人，东北大学教授，博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51604077)； 中央高校基本科研业务费专项资金资助项目(N172504019).

Thermodynamic Analysis of Producing Hydrogen by Sorption Enhanced Steam Reforming Process of Raw Coke Oven Gas

XIE Hua-qing， ZHAO Xiang-nan， YU Qing-bo， QIN Qin   

  1. School of Metallurgy， Northeastern University， Shenyang 110819， China.
  • Received:2018-08-08 Revised:2018-08-08 Online:2019-08-15 Published:2019-09-04
  • Contact: YU Qing-bo
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摘要： 采用Aspen Plus软件对焦炉荒煤气重整制氢反应进行热力学分析.研究发现，普通重整(不添加CO2吸附剂)和吸附强化重整(添加CO2吸附剂CaO)最佳反应压强都为常压，温度和n○S/n○C(蒸汽与C物质的量比)的增加能促使H2的产量和体积分数(干产气体积分数)增加，但n○S/n○C大于3以后增幅不大.CaO的添加会促进重整反应进程，降低最佳重整温度，提升H2产量和浓度.当n○S/n○C=3时，吸附强化重整(n○CaO/n○C(CaO与C物质的量比)=1)的最佳反应温度由普通重整的650℃降为450℃，而每100mol焦炉荒煤气产氢量由186mol提升为212mol，氢气体积分数由74%提升为97%，而制氢能耗则由2.26kW·h/m3降为2.00kW·h/m3.

关键词: 焦炉荒煤气, 蒸汽重整, 吸附强化, 制氢

Abstract: Thermodynamic analysis of producing hydrogen by the steam reforming process of raw coke oven gas(RCOG)was carried out using Aspen Plus software．It was found that the normal pressure was the best pressure for hydrogen-producing reaction by the steam reforming of RCOG without CO2 sorbent(i.e.， ordinary reforming)and with CO2 sorbent of CaO(i.e.， sorption-enhanced reforming). With increasing temperature and the ratio of steam to carbon(n○S/n○C)， the amount and concentration of H2 increased， while they changed slightly after n○S/n○C was over 3. The addition of CaO enhanced the reforming reaction process， resulting in the decrease of the best reaction temperature and the increase of the amount and concentration of H2. Compared with those by ordinary reforming， the best temperature for the reaction by sorption-enhanced reforming with n○CaO/n○C=1 dropped from 650℃ to 450℃， the amount of H2 increased from 186 mol to 212mol per 100mol RCOG， the volume fraction of H2 increased from 74% to 97%， and the energy consumption of producing hydrogen decreased from 2.26kW·h/m3 to 2.00kW·h/m3， when n○S/n○C=3.

Key words: raw coke oven gas, steam reforming, sorption enhancement, hydrogen production

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