溶剂再生塔腐蚀原因分析及应对措施  

Causes Analysis of Corrosion and Countermeasures in Solvent Regenerator

作　　者：黄绍硕 吕运容 郭福平[2] 李伟明[2] Huang Shaoshuo;Lv Yunrong;Guo Fuping;Li Weiming(SINOPEC Zhanjiang Dongxing Petrochemical Company,Zhangjiang 524000;Guangdong Provincial Key Laboratory of Petro Chemical Equipment Fault Diagnosis,Guangdong University of Petrochemical Technology,Maoming 525000,China)

机构地区：[1]中国石化湛江东兴石油化工有限公司,广东湛江524012 [2]广东石油化工学院广东省石化装备故障诊断重点实验室,广东茂名525000

出　　处：《广东化工》2020年第13期148-150,共3页Guangdong Chemical Industry

摘　　要：对硫磺车间溶剂再生塔的腐蚀进行机理分析,通过理化分析实验对试样进行失效分析,认为引起再生塔腐蚀的主要原因为RNH2-CO2-H2S-H2O腐蚀环境下的冲蚀+空泡腐蚀。因此,提出在塔内贫液返塔入口冲击区设置一块面积略大于冲击区面积的防冲挡板(材质选用铬镍奥氏体不锈钢),或整塔更换为耐腐蚀的铬镍奥氏体不锈钢材质等防范措施。The corrosion mechanism of the solvent regeneration tower in sulfur plant is analyzed.The failure analysis of the samples is carried out through the physical and chemical analysis experiment.It is considered that the main cause of the corrosion of the regeneration tower is erosion+cavitation corrosion under the corrosive environment of RNH2-CO2-H2S-H2O.Therefore,it is proposed to set a baffle plate with an area slightly larger than that of the impact area(made of chromium nickel austenitic stainless steel),or replace the whole tower with corrosion-resistant chromium nickel austenitic stainless steel.

关 键 词：溶剂再生塔 腐蚀环境 空泡腐蚀 铬镍不锈钢 

分 类 号：TH[机械工程]