SAF2205双相不锈钢二效合一化学清洗的应用实践_邹积强.pdf

DOI:10.13726/j.cnki.11-2706/tq.2010.04.004 石 化 Petrochemical SAF2205 双相不锈钢二效合一 化学清洗的应用实践 1 2 邹积强 张丽华 （1 大连西太平洋石化公司，辽宁大连116600； 2 中国石油股份有限公司大连石化分公司，辽宁大连116031） 摘 要：大连某大型石化公司常减压装置减顶系统水冷器管束系SAF2205 材质制作，使用22 个 月后发现管束壳程减顶油气系统出现堵塞现象，已影响装置的平稳运行，对该管束壳程清焦除垢已 势在必行，由于SAF2205 双相钢的特殊性，为防止硫化亚铁自燃以及发生连多硫酸腐蚀，故制定复 配以络合剂和螯合剂为主的技术路线，清洗后检查达到了预期的效果，换热器使用效率大为改观。 关键词：SAF2205 双相不锈钢 化学清洗 应用 中图分类号：TG174.42 文献标识码：A 文章编号：1008-7818(2010)04-0030-06 The Application of Chemical Cleaning to SAF2205 Duplex Stainless Steel Equipment 1 2 ZOU Ji-qiang , ZHANG Li-hua (1. Dalian West Pacific Petrochemical Company, Dalian 116600, China; 2. PetroChina Dalian Petrochemical Company Ltd., Dalian 116031, China) Abstract: The bundles of the water cooler in top system of atmospheric and vacuum unit in one petrochemical company were made by SAF2205 duplex stainless steel. Block were found in the bundles when the equipment used 22 month, the normal operation was influenced by the block, and chemical cleaning was necessary to the equipment so. In the chemical cleaning process, the agent composed by complexing agent and chelating agent played a desired effect, and the efficiency of the water cooler greatly improved. Key words: SAF2205 duplex stainless steel; chemical cleaning; application 0 概述 于大负荷运行状态，如果不进行处 1 SAF2205 双相钢特性 理将大大影响装置设备的运行效 大连某公司常减压装置减顶系