炉膛喷钙脱硫工艺中脱硫剂的制备及性能研究

doi:10.11962/1006-4990.2019-0480

Abstract

Abstract:

Sulfur dioxide is one of the main sources of atmospheric pollution.With the upgrading of national environmental protection standards,the highest emission concentration of SO₂ in flue gas is getting lower and lower.This requires upgrading the existing desulfurization process.At present,the main desulfurization methods used in industrial flue gas are dry desulfurization,semi-dry desulfurization and wet desulfurization.The technology of calcium injection desulfurization in furnace was studied.The basic components and evaluation conditions of desulfurizer were screened,and the desulfurizer was prepared for evaluation.By comparing the desulfurization effect of calcium hydroxide,calcium oxide and calcium carbonate,it was found that the desulfurization effect of calcium hydroxide was the best among them.And it was determined as the basic component of desulfurizer.In the evaluation process,the best evaluation conditions were 0.8 mL of calcium hydroxide and 200 mL/min of reaction gas.Increasing temperature was beneficial to the desulfurization of calcium hydroxide.The higher the reaction temperature was,the better the desulfurization effect of calcium hydroxide became.The desulfurization effect was better than calcium hydroxide,when ferrous oxide and manganese dioxide were introduced into calcium hydroxide.

Key words: sulfur dioxide, dry desulfurization, calcium oxide

CLC Number:

TQ125.1

Su Shaolong,Qu Xiaolong,Zhong Dule,Sun Yanmin,Nan Jun,Li Shipeng. Study on preparation and performance of desulfurizers in process of calcium injection desulfurization in furnace[J]. Inorganic Chemicals Industry, 2020, 52(7): 66-69.

时间/min	SO₂质量浓度/（mg·m^-3）
时间/min	氢氧化钙	氧化钙	碳酸钙
20	4.86	339.43	635.71
40	208.57	599.43	649.71
60	416.57	613.14	—
80	567.14	—	—
100	630.57	—	—

方案	氢氧化钙体积/mL	气体设定流速/ （mL·min^-1）	设定温度/ ℃	实际温度/ ℃
1	2.0	200	200	193.8
2	1.0	200	200	193.2
3	0.5	200	200	193.0

时间/ min	出口 φ（SO₂）/ 10^-6	二氧化硫折算质量浓度/ （mg·m^-3）	时间/ min	出口 φ（SO₂）/ 10^-6	二氧化硫折算质量浓度/ （mg·m^-3）
30	0.5	1.43	100	28.4	81.14
50	0.9	2.57	130	48.0	137.14
80	15.8	45.14

时间/ min	出口 φ（SO₂）/ 10^-6	二氧化硫折算质量浓度/ （mg·m^-3）	时间/ min	出口 φ（SO₂）/ 10^-6	二氧化硫折算质量浓度/ （mg·m^-3）
30	1.2	3.43	80	41.7	119.14
50	0.8	2.28

时间/ min	出口 φ（SO₂）/ 10^-6	二氧化硫折算质量浓度/ （mg·m^-3）	时间/ min	出口 φ（SO₂）/ 10^-6	二氧化硫折算质量浓度/ （mg·m^-3）
20	1.7	4.86	80	198.5	567.14
40	73.0	208.57	100	220.7	630.57
60	145.8	416.57

National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Study on preparation and performance of desulfurizers in process of calcium injection desulfurization in furnace

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[1]	邱炜, 周刚, 付英杰. 干法烟气脱硫综述[J]. 电站系统工程, 2005(3):19-20.
[2]	陈奎续, 别璇, 刘园园, 等. 燃煤电厂干法脱硫技术研究进展[J]. 电力科技与环保, 2018,34(5):9-12.
[3]	蒋和荣, 何耀华. 循环悬浮式半干法烟气脱硫技术在煤粉锅炉中的应用[J]. 能源环境保护, 2005,19(4):36-38.
[4]	陈秋, 宋国升, 闫维明. 半干法脱硫技术的应用与分析[J]. 电力建设, 2007,28(12):65-66,69.
[5]	罗振. 水泥窑石灰石—石膏湿法脱硫工艺介绍[J]. 水泥技术, 2008(4):85-87.
[6]	卞兆双. 低浓度二氧化硫烟气脱硫治理方案研究[J]. 江汉石油学院学报, 2004,26(2):171-172.
[7]	李从, 张婷, 李俊青. 干法脱硫剂脱除SO₂的机理及动力学研究进展[J]. 应用化工, 2015,44(5):927-932.

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