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过程工程学报 ›› 2018, Vol. 18 ›› Issue (4): 743-749.DOI: 10.12034/j.issn.1009-606X.217373

• 过程与工艺 • 上一篇    下一篇

碱金属对焦炭与CO2或水蒸汽气化反应的影响

王 平*, 吴 雨, 龙红明, 狄瞻霞, 李家新, 魏汝飞, 俞书才   

  1. 安徽工业大学冶金工程学院,安徽马鞍山 243002
  • 收稿日期:2017-10-27 修回日期:2018-01-10 出版日期:2018-08-22 发布日期:2018-08-15
  • 通讯作者: 王平 wangping63629@163.com

Effect of alkali metal on gasification reaction of coke with CO2 and steam

Ping WANG*, Yu WU, Hongming LONG, Zhanxia DI, Jiaxin LI, Rufei WEI, Shucai YU   

  1. School of Metallurgy Engineering, Anhui University of Technology, Ma?anshan, Anhui 243002, China
  • Received:2017-10-27 Revised:2018-01-10 Online:2018-08-22 Published:2018-08-15
  • Contact: Ping WANG wangping63629@163.com

摘要: 采用自制的气?固相反应装置研究了K/Na对焦炭与CO2和水蒸汽气化反应的影响. 结果表明,K/Na对焦炭与CO2气化反应的催化作用强于对焦炭与水蒸汽反应的催化作用,焦炭中Na含量由0.045wt%增加到0.727wt%,焦炭与CO2和水蒸汽气化反应的反应性指数分别增加23.17%和14.35%,反应后焦炭强度分别降低27.55%和18.31%. 焦炭中K/Na含量增加,焦炭与CO2和水蒸汽气化反应明显开始温度、激烈反应温度和反应表观活化能均降低,焦炭中Na含量由0.045wt%增加到0.727wt%,焦炭与CO2和水蒸汽气化反应明显开始温度分别降低170和20℃,激烈反应温度分别降低165和80℃, Na含量由0.045wt%增加到0.326wt%,表观活化能分别降低22.56和9.26 kJ/mol.

关键词: 焦炭, 气化反应, 碱金属, CO2, 水蒸气

Abstract: The effects of K/Na on the gasification reaction of coke with CO2 or steam were studied by self-made gas?solid reaction device. The results showed that the effect of K/Na on coke gasification reaction with CO2 is stronger than that with steam. While the content of Na in coke increased from 0.045wt% to 0.727wt%, the reactivity index of coke with CO2 and steam increased by 23.17% and 14.35% respectively, and the coke strength decreased by 27.55% and 18.31% respectively after reaction. With the increase of K/Na content in coke, the apparent start temperature, severe reaction temperature and apparent activation energy of coke gasification reaction with CO2 and steam were obviously reduced. While the content of Na in coke increased from 0.045wt% to 0.727wt%, the apparent start temperature of coke gasification reaction with CO2 and steam ahead of 170 and 20℃ respectively, and the severe reaction temperature ahead of 165 and 80℃ respectively. While the content of Na in coke increased from 0.045wt% to 0.326wt%, the apparent activation energy of coke gasification reaction with CO2 and steam decreased by 22.56 and 9.26 kJ/mol respectively.

Key words: coke, gasification reaction, alkali metal, CO2, H2O