钙基强碱—石膏湿法烟气脱硫改进工艺探讨
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摘要
模拟石灰石—石膏湿法烟气脱硫工艺设计的钙基强碱—石膏湿法烟气脱硫工艺,较多存在塔内浆液运行p H值高、亚硫酸钙难以氧化及石膏脱水困难等缺陷问题。分析了问题产生的主要原因为脱硫效率和氧化效率之间的矛盾,从技术角度分析,提出单塔双区、双塔及氧化塔3种改进工艺,均能较好地消除这一矛盾。从经济角度分析,氧化塔工艺可大大节约投资及运行费用,在3种工艺中具有明显的优势。
There are a lot of problems of calcium alkali-gypsum wet for flue gas desulfurization process which simulates limestone-gypsum wet for flue gas desulfurization process,the defects are cluding more high operation slurry p H value in tower,calcium sulfite difficult to oxidation and hard gypsum dehydration problems. The main reason of the problems for the contradiction between desulfurization efficiency and oxidation efficiency are analyzed. From a technical perspective,three improved processes( the single-tower double areas,double towers and oxidation tower) which can eliminate this contradiction are put forward. From an economic perspective,oxidation tower technology can greatly save investment and operation cost and have obvious advantages in three processes.
There are a lot of problems of calcium alkali-gypsum wet for flue gas desulfurization process which simulates limestone-gypsum wet for flue gas desulfurization process,the defects are cluding more high operation slurry p H value in tower,calcium sulfite difficult to oxidation and hard gypsum dehydration problems. The main reason of the problems for the contradiction between desulfurization efficiency and oxidation efficiency are analyzed. From a technical perspective,three improved processes( the single-tower double areas,double towers and oxidation tower) which can eliminate this contradiction are put forward. From an economic perspective,oxidation tower technology can greatly save investment and operation cost and have obvious advantages in three processes.
引文
[1]阎冬,王建华,吴景辉.塔内氧化—钙基强碱—石膏湿法烟气脱硫工艺:中国,201010170932.2[p].2010-09-29.
[2]龚德鸿,钱进,朱兵.电石渣在电厂烟气脱硫中的应用[J].锅炉技术,2008,39(6):14-17.
[3]吴忠标,莫建松,程常杰.一种塔外氧化石灰/电石渣—石膏法脱硫工艺及装置:中国,200710156609.8[p].2008-7-30.
[4]卫泳波,薛维汉,郝强.电石渣浆在大型火电机组烟气脱硫中的成功应用[J].电力环境保护,2006,22(1):17-19.
[5]杨建,李卫民,张成禹.电石渣在锅炉烟气脱硫的应用[J].煤气与热力,2008,28(11):1-2.
[6]闯喜宏,许雪松.电石渣脱硫运行存在问题的探讨[J].电力科技与环保,2012,28(2):42-44.
[7]吕宏俊.电石渣—石膏湿法脱硫技术的应用分析[J].电站系统工程,2011,27(1):41-42.
[8]禾志强,韩秀峰,祁利明.电石渣—石膏法烟气脱硫技术[J].电站系统工程,2010,26(5):65-66.
[9]梁磊,马洪玉,丁华.石灰—石膏法烟气脱硫系统塔内浆液p H值及密度测量改进[J].中国电力,2012,45(9):80-84.
[10]梁磊.乙烯基酯树脂鳞片材料在火电厂氨法烟气脱硫系统中的应用[J].腐蚀与防护,2012,33(2):167-170.
[11]薛建明,王小明,刘建民.湿法烟气脱硫设计及设备选型手册[M].北京:中国电力出版社,2011.
[12]梁磊.火电厂脱硫系统石膏脱水困难案例分析及对策[J].中国电力,2013,46(1):99-102.
[2]龚德鸿,钱进,朱兵.电石渣在电厂烟气脱硫中的应用[J].锅炉技术,2008,39(6):14-17.
[3]吴忠标,莫建松,程常杰.一种塔外氧化石灰/电石渣—石膏法脱硫工艺及装置:中国,200710156609.8[p].2008-7-30.
[4]卫泳波,薛维汉,郝强.电石渣浆在大型火电机组烟气脱硫中的成功应用[J].电力环境保护,2006,22(1):17-19.
[5]杨建,李卫民,张成禹.电石渣在锅炉烟气脱硫的应用[J].煤气与热力,2008,28(11):1-2.
[6]闯喜宏,许雪松.电石渣脱硫运行存在问题的探讨[J].电力科技与环保,2012,28(2):42-44.
[7]吕宏俊.电石渣—石膏湿法脱硫技术的应用分析[J].电站系统工程,2011,27(1):41-42.
[8]禾志强,韩秀峰,祁利明.电石渣—石膏法烟气脱硫技术[J].电站系统工程,2010,26(5):65-66.
[9]梁磊,马洪玉,丁华.石灰—石膏法烟气脱硫系统塔内浆液p H值及密度测量改进[J].中国电力,2012,45(9):80-84.
[10]梁磊.乙烯基酯树脂鳞片材料在火电厂氨法烟气脱硫系统中的应用[J].腐蚀与防护,2012,33(2):167-170.
[11]薛建明,王小明,刘建民.湿法烟气脱硫设计及设备选型手册[M].北京:中国电力出版社,2011.
[12]梁磊.火电厂脱硫系统石膏脱水困难案例分析及对策[J].中国电力,2013,46(1):99-102.