| 富氧燃烧气氛石灰石溶解特性研究 |
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| 引用本文： | 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. DOI: 10.11930/j.issn.1004-9649.201608011 |
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| 作者姓名： | 史晓宏 刘毅 仲兆平 张锴 赵凯 |
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| 作者单位： | 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 |
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| 基金项目： | 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）。 |
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| 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。
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| 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 |
| 收稿时间： | 2016-08-03 |
| 修稿时间： | 2017-01-06 |
The Characteristics of Limestone Dissolution under Oxy-firing Combustion Surroundings |
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| 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. DOI: 10.11930/j.issn.1004-9649.201608011 |
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| Authors: | SHI Xiaohong LIU Yi ZHONG Zhaoping ZHANG Kai ZHAO Kai |
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| Affiliation: | 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 |
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| 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. |
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| Keywords: | coal-fired power generation oxy-firing combustion surroundings limestone wet desulphurization (WFGD) dissolution ?CO2 concentration |
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