气相防腐剂在炼油厂二套催化备用设备中的应用.docVIP

气相防腐剂在炼油厂二套催化备用设备中的应用 危建民1陶大军1李鹤1李康2王斌2庄善学2 (1．中石油独山子石化公司，克拉玛依，833600；2.兰州金陇鑫化工科技有限公司，兰州，730070) 中文摘要: 本文介绍了独山子石化炼油厂二套催化设备在备用过程中的腐蚀及保护情况，停备用设备气相防腐剂的物质组成及作用原理，比较了几种常见防腐方法的优缺点。停备用设备气相防腐剂在独山子石化二套催化备用设备半年的防腐期内，阻止了设备在备用过程中的进一步腐蚀，并对未使用防腐剂以前生成的陈旧锈层起到了一定的剥离和去除作用，将悬挂于设备内部的试验试片取出后发现光亮如新，没有出现腐蚀情况，对试片称重后没有发现试片重量发生变化，防腐效果满足预期要求。通过在独山子石化炼油厂二套催化停备用设备中的实际应用，验证了停备用设备气相防腐剂在设备停备用期间有良好的防腐蚀效果。 关键词: 气相防腐剂，缓蚀剂，二套催化设备，停备用设备 The gas phase preservatives used in standby equipment of two catalytic device in refinery Abstract: This paper introduces the corrosion and protection of Dushanzi petrochemical refinery second set of catalytic device in the standby process, material composition and the action principle of stopping standby equipment in gas phase preservatives, compare the advantages and disadvantages of several common anticorrosion method. Using gas phase preservatives of stopping standby equipment in Dushanzi petrochemical refinery second set of catalytic device in the standby process in six months, to prevent further corrosion of the equipment in the process of standby. And used to generate the old rust layer plays a certain detachment and removal effect before without use of preservatives. To remove the test specimens inside the equipment and found bright as new, no corrosion, the weight of test specimens have not change, the anticorrosion effect to meet the expected requirements. Through the practical application in the stopping standby equipment of Dushanzi petrochemical refinery second set of catalytic device, verified the good effect of gas phase preservatives. Keywords: gas phase preservatives, corrosion inhibitor, two catalytic device, stopping standby equipment 一、概述 1、独山子石化炼油厂二套催化设备简介 设备在停备用期间，由于设备金属表面直接和大气或残留腐蚀介质接触，又不能得到有效的防腐保护，设备的腐蚀往往比运行时更严重[1]。为了最大限度的减少设备腐蚀，有必要对停备用设备采取有效的防腐措施。 根据生产安排，独山子石化炼油厂二套催化设备作为备用设备于2009年停工。二套催化设备停工后，一直采用充氮气保护方法进行内部防腐，2011年10月19号打开了二套催化设备的T-201、T-202、T-301、T-302、T-303人孔，经过实地勘察和拍照取证，我们发现设备的腐蚀情况较为严重。除了塔底T-201腐蚀较轻锈迹较少外，T-202附近就能看见大片的锈迹，不过锈层不厚。从中部开始腐蚀锈