富氧燃烧气氛石灰石溶解特性研究

doi:10.11930/j.issn.1004-9649.201608011

中国电力 ›› 2018, Vol. 51 ›› Issue (3): 155-162.DOI: 10.11930/j.issn.1004-9649.201608011

富氧燃烧气氛石灰石溶解特性研究

史晓宏^1,2, 刘毅¹, 仲兆平³, 张锴⁴, 赵凯³

1. 神华国华(北京)电力研究院有限公司, 北京 100025;
2. 三河发电有限责任公司, 河北三河 065201;
3. 东南大学, 江苏南京 210096;
4. 华北电力大学热电生产过程污染物监测与控制北京市重点实验室, 北京 102206

收稿日期:2016-08-03 修回日期:2017-01-06 出版日期:2018-03-05 发布日期:2018-03-12
作者简介:史晓宏 (1971—),女,吉林东丰人,高级工程师,从事火力发电厂环境保护方面的工作,E-mail:16040080@shenhua.cc。
基金资助:
神华集团科技创新资助项目（中国神华科[2011]368号）；国家国际科技合作专项资金资助项目（2012DFB60100）；国家科技支撑计划项目（2015BAA05B02）。

The Characteristics of Limestone Dissolution under Oxy-firing Combustion Surroundings

SHI Xiaohong^1,2, LIU Yi¹, ZHONG Zhaoping³, ZHANG Kai⁴, ZHAO Kai³

1. ShenhuaGuohua (Beijing) Electric Power Research Institute Co., Ltd., Beijing 100025, China;
2. Sanhe Power Generation Co., Ltd., Sanhe 065201, China;
3. Southeast University, Nanjing 210096, China;
4. Beijing Key Laboratory of Emission Surveillance and Control for Thermal Power Generation, North China Electric Power University, Beijing 102206, China

Received:2016-08-03 Revised:2017-01-06 Online:2018-03-05 Published:2018-03-12
Supported by:
This work is supported by Shenhua Group Science and Technology Innovation Grant Project (No.[2011]368), International Scientific and Technological Cooperation Fund Program (No.2012DFB60100), National Key Technology Support Program (No.2015BAA05B02).

摘要/Abstract

摘要： 在实验室小型试验台上研究富氧燃烧气氛下湿法脱硫用石灰石溶解特性，研究结果表明：较高的CO₂浓度对石灰石的溶解有促进作用，CO₂体积分数在80%时，石灰石的溶解速率明显增大；在相同的pH值情况下，CO₂浓度越高，石灰石的溶解速率越快。在pH=4.5时，低浓度CO₂气氛比高浓度CO₂气氛下溶解时间增加70 min，CO₂浓度对溶解速率的影响比较明显。

关键词: 燃煤发电, 富氧燃烧气氛, 石灰石, 湿法脱硫（WFGD）, 溶解, CO₂浓度

Abstract: Under the oxy-firing combustion surroundings, the characteristics of limestone dissolution used for WFGD were researched on a small-scale test rig. The results indicate that higher CO₂ concentration can enhance the dissolution of limestone. Especially at 80% CO₂ concentration the rate of limestone dissolution increases significantly. The higher CO₂ concentration, the faster rate of dissolution under the same pH value. When pH is equal to 4.5, it takes 70 more minutes under low CO₂ concentration surroundings than with the high CO₂ concentration surroundings. Apparently, the CO₂ concentration has significant impact on the limestone dissolution.

Key words: coal-fired power generation, oxy-firing combustion surroundings, limestone, wet desulphurization (WFGD), dissolution, ?CO₂ concentration

中图分类号:

TM621

史晓宏, 刘毅, 仲兆平, 张锴, 赵凯. 富氧燃烧气氛石灰石溶解特性研究[J]. 中国电力, 2018, 51(3): 155-162.

SHI Xiaohong, LIU Yi, ZHONG Zhaoping, ZHANG Kai, ZHAO Kai. The Characteristics of Limestone Dissolution under Oxy-firing Combustion Surroundings[J]. Electric Power, 2018, 51(3): 155-162.

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富氧燃烧气氛石灰石溶解特性研究

The Characteristics of Limestone Dissolution under Oxy-firing Combustion Surroundings

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