The catalytic effect of the Na and Ca-rich industrial wastes on the thermal ignition of coal combustion

Jun Cheng; Fan Zhou; Xiaoxu Xuan; Jianzhong Liu; Junhu Zhou; Kefa Cen

doi:10.1016/j.cjche.2019.02.037

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The catalytic effect of the Na and Ca-rich industrial wastes on the thermal ignition of coal combustion

Updated：2026-01-06

- The catalytic effect of the Na and Ca-rich industrial wastes on the thermal ignition of coal combustion
- Chinese Journal of Chemical Engineering Vol. 27, Issue 10, Pages: 2467-2471(2019)
- Affiliations：
  
  State Key Lab of Clean Energy Utilization, Zhejiang University,Hangzhou,China,310027
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2019.02.037
  CLC：
- Published：2019
- Accepted：
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Jun Cheng, Fan Zhou, Xiaoxu Xuan, Jianzhong Liu, Junhu Zhou, Kefa Cen. The catalytic effect of the Na and Ca-rich industrial wastes on the thermal ignition of coal combustion[J]. Chinese Journal of Chemical Engineering, 2019, 27(10): 2467-2471.
DOI：

Jun Cheng, Fan Zhou, Xiaoxu Xuan, Jianzhong Liu, Junhu Zhou, Kefa Cen. The catalytic effect of the Na and Ca-rich industrial wastes on the thermal ignition of coal combustion[J]. Chinese Journal of Chemical Engineering, 2019, 27(10): 2467-2471. DOI： 10.1016/j.cjche.2019.02.037.

摘要

Abstract

The catalytic effects of four industrial wastes

namely

the soap residue (SR)

brine sludge (BS)

calcium carbide residue (CCR)

and white lime mud (WLM)

on coal thermal ignition were investigated. The acidity of palmitate anion associated with Na

in SR was lower than that of chloride anion combined with Na

in BS

which resulted in an improved the combustion of SR. The acidity of OH

anion combined with Ca

in CCR was lower than that of CO

anion combined with Ca

in WLM

resulting in CCR exhibiting a better catalytic effect on coal ignition. The alkaline metal Na had lower initial ionisation energy than the alkaline earth metal Ca. Therefore

the Na-rich SR exhibited higher catalytic activity on coal ignition than Ca-rich CCR. The ignition temperature of coal with 0.5% SR decreased from 544 to 503℃.

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