
技术改造
焦化富气压缩机轴封失效原因分析及改进措施钟策,毕志刚
(中国石化北海炼化有限责任公司,广西北海536000)
[摘要]:介绍了焦化装置富气压缩机密封系统流程和轴端密封结构。阐述了自投产以来3次轴端梳齿密封出现的故障现象,对故障原因进行了分析排查,确定了冲蚀是遗成轴端密封损坏的主要原因。通过对比PEEK和LD10的材料性能和结构的差别,提出轴端密封改为PEEK复合密封的方索,特别介绍了PEEK材料在设计中的注意事项。通过一段时间的运行,确定改善效果明显,这对国内离心压缩机密封改造有着重要的参考意义。
[关键词]:PEEK;梳齿密封;焦化装置;富气压缩机
中图分类号:TH45
文献标志码:B
文章编号:10062971(2015)050042-06
Analysis and Solution about Failure of the Shaft Sealing in Coking Rich Gas Compressor ZHONG Ce, BI Zhigang
(Sinopec Beihai Refinery Limited Liability Company, Beihai 536000, China)
Abstract:This paper introduces the seal system process and shaftend seal structure of the rich gas compressor in the coking unit. After analyzing and checking the labyrinth seal failure which happened 3 times since the start of the operation, the erosion is the main cause of shaft end seal damage. The PEEK combined seal is proposed by comparing the PEEK with the LD1O in the differ-ences of material properties and structure, and especially the matters needing attention in the design of PEEK material are also intro-duced. It is confirmed that the improvement effect is obvious after running for a period of time, which shows great significance for the transformation of domestic centrifugal compressor sealing-
Key words: PEEK; broach sealing; coking unit; rich gas compressor
引信 1
中国石化北海炼化有限责任公司120万ta延迟焦化装置中富气压缩机0204-C-201(以下简称C-201),为水平剖分结构。该压缩机自2012年1月投人生产运行以来,轴封多次出现损坏,造成压缩机蒸汽功耗增加。自该机轴封出现故障后,对其轴封系统进行分析和优化改造,使该机轴封系统运行平稳,保障了焦化富气压缩机组安全、高效、平稳运行。
收稿日期:2015-0609
压缆靓技术
42
Compressoeme
2机组概况 2.1机组简介
表1压缩机技术参数
压缩机技术参数
名称型号轴功率kw 转速r/min
富气压缩机 0204C201 2MCL527 2664 8795
介质
人口压力MPa(A)出口压力MPa(A) 操作湿度℃ 额定流Nm'/hr
富气 0.14/0.51 0.534/1.4 42/121.2 17667
压缩机组C-201由沈阳透平机械股份有限公司制造,型号为2MCL527,压缩机由一缸二段组成。
2015年05期(总第253期)嘴