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›› 2014, Vol. 14 ›› Issue (2): 340-344.

• 材料工程专栏 • 上一篇    下一篇

电石水解制备复合钙基吸附剂及其循环吸附CO2的特性

牛佳宁 张登峰 金悦 贾建丽 李松庚 林伟刚   

  1. 中国矿业大学（北京）化学与环境工程学院 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 中国矿业大学(北京)化学与环境工程学院 中国矿业大学（北京）化学与环境工程学院 中国科学院过程工程研究所多相反应实验室，北京 100080 中国科学院过程工程研究所多相反应开放实验室
  • 收稿日期:2014-01-10 修回日期:2014-03-11 出版日期:2014-04-20 发布日期:2014-04-20
  • 通讯作者: 牛佳宁

Preparation of Calcium-based Composite Sorbent by Hydrolysis of Calcium Carbide and Its Multi-cyclic CO2 Capture Performance

NIU Jia-ning ZHANG Deng-feng JIN Yue JIA Jian-li LI Song-geng LIN Wei-gang   

  1. School of Chemical & Environmental Engineering , China University Mining & Technology（Beijing） State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, School of Chemical & Environmental Engineering , China University Mining & Technology（Beijing） School of Chemical & Environmental Engineering , China University Mining & Technology（Beijing） Multi-phase Reaction Laboratory, Institute of Process Engineering, Chinese Academy of Sciences Multi-phase Reaction Laboratory, Institute of Process Engineering Chinese Academic of Science
  • Received:2014-01-10 Revised:2014-03-11 Online:2014-04-20 Published:2014-04-20
  • Contact: NIU Jia-ning

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摘要： 利用电石水解制乙炔工艺制备新型电石渣CaO/Ca12Al14O33复合钙基吸附剂，考察了Ca12Al14O33含量、碳酸化和煅烧再生温度对CaO转化率和多循环吸附CO2的影响，并与分析纯CaCO3和传统电石渣进行了比较，对其表面形貌、比表面积和孔结构进行了分析. 结果表明，新型复合钙基吸附剂在多循环煅烧/碳酸化过程中具有较好的多循环吸附CO2的性能. Ca12Al14O33有效减缓了吸附剂烧结现象. 20次循环后，自制电石渣吸附剂的CaO转化率仍保持在48%以上.

关键词: 二氧化碳, 钙铝石, CaO, 碳酸化转化率, 电石渣, 电石

Abstract: The CaO/Ca12Al14O33 sorbent was prepared by the hydrolysis of calcium carbide. The effects of Ca12Al14O33 content, carbonation temperature and calcination temperature on CaO conversion rate and its cyclic stability were investigated by thermal gravimetric analysis. Multi-cyclic CO2 capture performance of the sorbent was compared with CaCO3 and calcium carbide hydrolysis slag. The sorbent was characterized physically. The results showed that the prepared sorbent exhibited superior CO2 capture performance compared with pure CaCO3 and calcium hydrolysis carbide slag. Ca12Al14O33 played a significant role in preventing the sorbent sintering at high temperatures. CaO conversion rate with the prepared sorbent can be maintained at above 48% after 20 cycles.

Key words: carbon dioxide, mayenite, CaO, carbonation conversion rate, calcium carbide hydrolysis slag, calcium carbide

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