燃煤烟气SO3测试捕集效率试验研究

doi:10.11930/j.issn.1004-9649.201901088

中国电力 ›› 2019, Vol. 52 ›› Issue (3): 43-48.DOI: 10.11930/j.issn.1004-9649.201901088

燃煤烟气SO₃测试捕集效率试验研究

陈威祥^1,3, 郭俊^1,3, 叶兴联^1,2, 刘锡尧⁴, 陈永强³, 郑芳³, 龚国汉⁴

1. 国家环境保护电力工业烟尘治理工程技术中心, 福建龙岩 364000;
2. 东北大学冶金学院, 辽宁沈阳 110819;
3. 福建龙净环保股份有限公司, 福建龙岩 364000;
4. 龙岩市产品质量检验所, 福建龙岩 364000

收稿日期:2019-01-23 修回日期:2019-02-15 出版日期:2019-03-05 发布日期:2019-03-27
作者简介:陈威祥(1978-),男,工程师,从事火电厂环保监测方面的研究,E-mail:13859531361@139.com;叶兴联(1984-),男,博士,工程师,从事烟气污染防治技术研究,E-mail:yexinglian1228@163.com
基金资助:
国家重点研发计划资助项目（低成本超低排放技术与高端制造装备，2016YFC0203703）；福建省质量技术监督局科技项目资助（烟气中SO₃的采样和测定方法研究，FJQI2017041）。

Experimental Study of the SO₃ Detection and Collection Efficiency in Coal-fired Flue Gas

CHEN Weixiang^1,3, GUO Jun^1,3, YE Xinglian^1,2, LIU Xiyao⁴, CHEN Yongqiang³, ZHENG Fang³, GONG Guohan⁴

1. State Environmental Protection Engineering and Technology Center for Power Industrial Dust Control, Longyan 364000, China;
2. School of Metallurgy, Northeastern University, Shenyang 110819, China;
3. Fujian Longking Co.,Ltd., Longyan 364000,China;
4. Longyan Institute of Quality Inspection for Products, Longyan 364000, China

Received:2019-01-23 Revised:2019-02-15 Online:2019-03-05 Published:2019-03-27

摘要/Abstract

摘要： 燃煤烟气中的SO₃浓度低、化学性质活泼，一直是国内燃煤电厂污染物测试的难点。针对“控制冷凝法”测试SO₃捕集效率低的问题，依托自制的SO₃校准发生装置进行试验研究。结果表明：通过采用D型蛇形管+硼硅玻璃纤维滤膜过滤装置，采样流量为20 L/min以及精准控制采样管、过滤器、蛇形管和滤膜过滤装置的伴热温度，可以确保SO₃捕集效率达到90%以上，因而可保证烟气SO₃的捕集效率和测试结果的准确性。改进后的方法已在模拟试验（低尘、含湿、不同SO₃含量）中得到良好应用，进而可用于燃煤电厂烟气SO₃测量。

关键词: SO₃测试, 控制冷凝法, 捕集效率, 采样流量, 蛇形管, 滤膜过滤

Abstract: Because of the low concentration and active chemical properties, it has always been difficult to detect SO₃ in the coal burning flue gas for pollutant inspection domestically and abroad. Aiming at the problem of the low collection efficiency of SO₃ detection by control condensation method, the experiment was conducted based on the homegrown SO₃ calibration system. Study results show that:the collection efficiency can be effectively improved to over 90% through the application of the D-type condenser and filter membrane filter device with borosilicate glass fiber membrane, if the optimal sampling flow rate was kept at 20 L/min, and the heating temperature of sample tube, condenser pipe and filter was controlled precisely. Hence both the collection efficiency of SO₃ detection and the accuracy of test result are guaranteed. The enhanced control condensation method has been widely used in computer simulations under the conditions of low dust content with certain moisture and various concentrations of SO₃, and consequently can be implemented to examine the SO₃ concentration in fume for the entire coal-fired power industry.

Key words: SO₃ test, control condensation, capture efficiency, sampling flow, snake pipe, membrane filter

中图分类号:

TM621.9
X701

陈威祥, 郭俊, 叶兴联, 刘锡尧, 陈永强, 郑芳, 龚国汉. 燃煤烟气SO₃测试捕集效率试验研究[J]. 中国电力, 2019, 52(3): 43-48.

CHEN Weixiang, GUO Jun, YE Xinglian, LIU Xiyao, CHEN Yongqiang, ZHENG Fang, GONG Guohan. Experimental Study of the SO₃ Detection and Collection Efficiency in Coal-fired Flue Gas[J]. Electric Power, 2019, 52(3): 43-48.

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燃煤烟气SO₃测试捕集效率试验研究

Experimental Study of the SO₃ Detection and Collection Efficiency in Coal-fired Flue Gas

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