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废水处理工艺和装置.pdf

发布:2023-08-19约3.03千字共1页下载文档
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  第1期                      李仁鸿 第二加氢装置高温油泵机械密封改造                                        79 REFORM ON MECHANICAL SEAL OF THE HIGH TEMPERATURE OIL PUMP IN THE SECOND HYDROGENATION UNIT Li Renhong (ShengliRefinery of QiluBranch Co. ꎬSINOPECꎬZibo Shandong 255400) Abstract:Aimed at the unsafefactors existing in the high temperature oil pump G-106B in the secondhydrogenationunitꎬsuch asflammabilityꎬexplosionandetcꎬexistenceof leakage possibility intheoriginalmechanical sealwhichwaseasytocausesafety andenvironmentalpro ̄ tection accidentsandwasthemajorhiddendangerꎬthemechanical sealandcorrespondingsystem of G-106B pump were reformed. The original single face mechanical seal was transformed to the double face cascade mechanical sealꎻ the combined washing scheme of PLAN32 and PLAN53Bwas selected. Then the unsafe and unstable factors were eliminatedꎬthe long term and stable operation of the unit was ensured. Key words:high temperature oil pumpꎻdoubleface sealꎻwashing scheme (上接第63 页) omatic molecular sieve for the reformate oil possessed the characteristics of aromatic less loss and long operation period. After the new addition of the post hydrogenation reactorꎬduring in ̄ spection period of the combined processꎬthe operation period of the adsorbent was247 times aslongasthatofthecommonclayꎬactivityandstabilityoftheadsorbentwasstillgood. Theen ̄ vironmental pressurecausedbythefrequentclayreplacementwaseliminatedusingthecombined process. Key words:olefin removal of reformate oilꎻclayꎻhydrogenation combined processꎻenvi ̄ ronmental protection
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