渣油加氢装置循环氢系统干燥方案分析
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摘要
针对渣油加氢装置反应器分配盘充水试验造成反应器底部及相连管道大量存水的问题,提出了3种清除存水的可行方案。通过对比,优选反吹扫干燥法解决方案。该方案利用装置非净化压缩空气,采用反吹扫干燥方式清除塔底及塔底管线中的积水,可达到"符合规程、时间最短、损耗最少"的基本原则,并经过实践检验,效果较好。通过延伸核算研究表明,该方案适用于不同温度及露点的作业地域,在控制非净化压缩空气流速大于13 m/s情况下,随着温度及露点的降低,所需临时管线口径会越小,可选管线半径在25～75 mm范围。针对某个既定地域,当反吹扫干燥温度、露点及管线半径确定情况下,反过来可验证供给条件是否满足要求。
In order to solve the problem of large amount of water accumulation in bottom of reactor and connecting pipeline caused by water filling test of distribution of residue hydrogenation unit reactor. Three feasible schemes for cleaning water are proposed. Through comparison of three schemes, it is selected the best solution of back purge drying method. The scheme uses non-purified compressed air of the device and the back purge drying method to clean the accumulated water. It can meet the requirements of "conforming to regulations, shortest time and least loss", and the practice shows that the effect is good. Through extended accounting research, the scheme is suitable for different operating areas with different temperatures and dew points. Under the condition of controlling the flow rate of non-purified compressed air greater than 13 m/s, with the decrease of temperature and dew point, the diameter of the temporary pipeline is smaller, and the radius of optional pipeline is between 25～75 mm. For a given area, when the drying temperature, dew point and pipeline radius are determined, it can verify whether the supply conditions meet the requirements.
In order to solve the problem of large amount of water accumulation in bottom of reactor and connecting pipeline caused by water filling test of distribution of residue hydrogenation unit reactor. Three feasible schemes for cleaning water are proposed. Through comparison of three schemes, it is selected the best solution of back purge drying method. The scheme uses non-purified compressed air of the device and the back purge drying method to clean the accumulated water. It can meet the requirements of "conforming to regulations, shortest time and least loss", and the practice shows that the effect is good. Through extended accounting research, the scheme is suitable for different operating areas with different temperatures and dew points. Under the condition of controlling the flow rate of non-purified compressed air greater than 13 m/s, with the decrease of temperature and dew point, the diameter of the temporary pipeline is smaller, and the radius of optional pipeline is between 25～75 mm. For a given area, when the drying temperature, dew point and pipeline radius are determined, it can verify whether the supply conditions meet the requirements.
引文
[1] 赵珍祥.渣油加氢装置高压临氢管道施工重点环节探讨[J].石油化工建设,2009(4):70.
[2] 金德浩,刘建晖,申涛.加氢裂化装置技术问答[M].北京:中国石化出版社,2006:291.
[3] 黎国磊,徐碧云,黄荣臻,等.炼油设备工程师手册[M].北京:中国石化出版社,2003.
[4] 林毓果,余永惠,付朝辉.湿度测量方法:GB/T 11605—2005[S].北京:中国标准出版社,2005:22-26.
[5] 中国石化集团第五建设公司.石油化工有毒、可燃介质管道工程施工及验收规范:SH 3501—2011[S].北京:中国石化出版社,2011:10.
[2] 金德浩,刘建晖,申涛.加氢裂化装置技术问答[M].北京:中国石化出版社,2006:291.
[3] 黎国磊,徐碧云,黄荣臻,等.炼油设备工程师手册[M].北京:中国石化出版社,2003.
[4] 林毓果,余永惠,付朝辉.湿度测量方法:GB/T 11605—2005[S].北京:中国标准出版社,2005:22-26.
[5] 中国石化集团第五建设公司.石油化工有毒、可燃介质管道工程施工及验收规范:SH 3501—2011[S].北京:中国石化出版社,2011:10.
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