乙烯装置三机透平结垢分析及在线清洗技术应用
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摘要
对乙烯装置三大压缩机透平结垢机理和原因进行了分析,汽包带水和减温水劣质化是透平结垢的主要原因,提出了3项防止透平结垢的措施。同时分析了国内外透平在线清洗的案例,结合自身实际情况和流程模拟计算,制定了对结垢透平进行在线湿蒸汽清洗的方案,介绍了两次在线清洗过程并分析了在线清洗效果。通过比较清洗前后透平的运行工况表明,在保证装置安全运行的基础上,在线清洗效果良好,改善了结垢透平的运行工况,各项参数基本恢复到运行初期的水平,有效延长了乙烯装置的运行周期。从源头上控制蒸汽品质是控制乙烯装置三大压缩机透平结垢的根本方法。
The causes of fouling on three compressor steam turbines in an ethylene plant were analyzed,which were the steam with water from the steam drums and the desuperheating water deterioration. Three measures were put forward to prevent the turbine fouling. Cases of online cleaning steam turbines at home and abroad were investigated. Combined with the actual situation and process simulation,an online cleaning plan was worked out to remove the fouling in the steam turbines by wet cleaning,which had already applied two times successively. The online cleaning effect was good,the operate mode of the turbines was improved and the operating cycle of the ethylene plant was prolonged. It was suggested to control the steam quality to reduce the fouling on the steam turbines.
The causes of fouling on three compressor steam turbines in an ethylene plant were analyzed,which were the steam with water from the steam drums and the desuperheating water deterioration. Three measures were put forward to prevent the turbine fouling. Cases of online cleaning steam turbines at home and abroad were investigated. Combined with the actual situation and process simulation,an online cleaning plan was worked out to remove the fouling in the steam turbines by wet cleaning,which had already applied two times successively. The online cleaning effect was good,the operate mode of the turbines was improved and the operating cycle of the ethylene plant was prolonged. It was suggested to control the steam quality to reduce the fouling on the steam turbines.
引文
[1]赵百仁,李广华.三元制冷系统轻冷剂流道堵塞问题的分析与对策[J].石油化工,2014,43(8):948-953.
[2]李立新,杨林林,李鑫钢.乙烯装置前脱丙烷前加氢流程设计要点的分析[J].石油化工,2009,38(2):174-178.
[3]李树凯.辽化乙烯装置裂解气压缩机运行分析[J].乙烯工业,2010,22(1):43-48.
[4]汪学峰.汽轮机叶片结垢原因分析及解决措施[J].流体传动与控制,2011,45(2):63-66.
[5]郭长清.抽凝式汽轮机通流部分结垢原因、处理和预防[J].知识经济,2009(16):124.
[6]张迪,吴伟,叶会亮,等.裂解气压缩机透平结垢原因分析及在线清洗技术[J].乙烯工业,2014,26(1):61-64.
[7]李伟,路海彬,郭慎行,等.合成氨装置透平结垢原因分析及对策[J].石化技术与应用,2014,32(2):163-165.
[8]黄开炳,王儒明.蒸汽透平的结垢处理[J].乙烯工业,1999,11(3):32-35.
[9]王清国,陈佑军,庞亮.裂解气压缩机组透平叶片结垢的预防措施[J].油气田地面工程,2010,29(9):78.
[10]周清,叶盛芳,颜芳.煤化工蒸汽透平压缩机结垢原因及处理措施[J].化肥设计,2011,49(4):36-37.
[11]孙瑾.蒸汽纯度对透平机的影响[J].化学工业与工程技术,2001,22(4):44-47.
[12]寇刚,姚志忠,曹亦兵.汽轮机结垢不揭缸清洗技术总结[J].中氮肥,2006(4):46-48.
[13]杨春生.裂解气压缩机的结垢问题及其对策[J].乙烯工业,2000,12(4):29-32.
[14]黄开炳,陈奋龙.裂解气压缩机蒸汽透平结垢的处理[J].乙烯工业,2009,21(4):50-53.
[15]盛子龙.蒸汽透平转子积盐结垢的处理方法[J].化工设计通讯,2003,29(3):9-10.
[2]李立新,杨林林,李鑫钢.乙烯装置前脱丙烷前加氢流程设计要点的分析[J].石油化工,2009,38(2):174-178.
[3]李树凯.辽化乙烯装置裂解气压缩机运行分析[J].乙烯工业,2010,22(1):43-48.
[4]汪学峰.汽轮机叶片结垢原因分析及解决措施[J].流体传动与控制,2011,45(2):63-66.
[5]郭长清.抽凝式汽轮机通流部分结垢原因、处理和预防[J].知识经济,2009(16):124.
[6]张迪,吴伟,叶会亮,等.裂解气压缩机透平结垢原因分析及在线清洗技术[J].乙烯工业,2014,26(1):61-64.
[7]李伟,路海彬,郭慎行,等.合成氨装置透平结垢原因分析及对策[J].石化技术与应用,2014,32(2):163-165.
[8]黄开炳,王儒明.蒸汽透平的结垢处理[J].乙烯工业,1999,11(3):32-35.
[9]王清国,陈佑军,庞亮.裂解气压缩机组透平叶片结垢的预防措施[J].油气田地面工程,2010,29(9):78.
[10]周清,叶盛芳,颜芳.煤化工蒸汽透平压缩机结垢原因及处理措施[J].化肥设计,2011,49(4):36-37.
[11]孙瑾.蒸汽纯度对透平机的影响[J].化学工业与工程技术,2001,22(4):44-47.
[12]寇刚,姚志忠,曹亦兵.汽轮机结垢不揭缸清洗技术总结[J].中氮肥,2006(4):46-48.
[13]杨春生.裂解气压缩机的结垢问题及其对策[J].乙烯工业,2000,12(4):29-32.
[14]黄开炳,陈奋龙.裂解气压缩机蒸汽透平结垢的处理[J].乙烯工业,2009,21(4):50-53.
[15]盛子龙.蒸汽透平转子积盐结垢的处理方法[J].化工设计通讯,2003,29(3):9-10.