炼化装置腐蚀防护用新型抗高温缓蚀剂的制备及性能评价  

Preparation and Performance Evaluation of a New High-Temperature Corrosion Inhibitor for Corrosion Protection in Refining Equipments

作　　者：张迎春 王珅 张艺莹 ZHANG Yingchun;WANG Kun;ZHANG Yiying(PetroChina Sichuan Petrochemical Co.,Ltd.,Chengdu Sichuan 611930,China)

机构地区：[1]四川石化有限责任公司,四川成都611930

出　　处：《当代化工》2024年第8期1900-1904,共5页Contemporary Chemical Industry

基　　金：四川省自然科学基金项目(项目编号:2022NSFSC0948)。

摘　　要：为了降低炼化厂换热器等装置的腐蚀速率,延长其使用寿命,以有机胺单体、甲醛和苯丙酮为原料,通过室内实验制备了一种适合炼化装置腐蚀防护用的新型抗高温缓蚀剂HTS-2,对缓蚀剂的合成工艺条件进行了优化,并考察了其腐蚀防护效果。结果表明:当各原料配比中醛、酮、胺的物质的量比为1∶1∶1、合成反应温度为80℃、反应时间为12 h、盐酸用量为8 mL时,新型抗高温缓蚀剂HTS-2的收率最高,可以达到96.7%。随着抗高温缓蚀剂HTS-2质量分数的逐渐增大,腐蚀速率逐渐减小;随着腐蚀实验温度的逐渐升高,腐蚀速率逐渐增大。当新型抗高温缓蚀剂HTS-2的质量分数为2%、腐蚀实验温度为150℃时,目标炼化厂换热器装置钢材的腐蚀速率低至0.097 mm·a^(-1)。研究结果,表明缓蚀剂HTS-2的耐温性能较好,能够满足炼化装置在高温条件下的腐蚀防护需求。In order to reduce the corrosion rate of heat exchangers and other devices in refineries and extend their service life,a new high-temperature corrosion inhibitor HTS-2 suitable for corrosion protection in refineries was prepared through indoor experiments using organic amine monomers,formaldehyde and phenylacetone as raw materials.The synthesis process conditions of the inhibitor were optimized,and its corrosion protection effect was investigated.The results showed that when the molar ratio of aldehyde to ketone to amine in each raw material ratio was 1∶1∶1,the synthesis reaction temperature was 80℃,the reaction time was 12 h,and the amount of hydrochloric acid was 8 mL,the yield of the new high-temperature corrosion inhibitor HTS-2 was the highest,reaching 96.7%.As the mass fraction of high-temperature corrosion inhibitor HTS-2 gradually increased,the corrosion rate gradually decreased;as the temperature of the corrosion experiment gradually increased,the corrosion rate gradually increased.When the mass fraction of the new high-temperature corrosion inhibitor HTS-2 was 2%and the corrosion test temperature was 150℃,the corrosion rate of the steel in the heat exchanger device of the target refinery was as low as 0.097 mm·a^(-1).The research results indicated that the corrosion inhibitor HTS-2 had good temperature resistance and could meet the corrosion protection requirements of refining equipment under high temperature conditions.

关 键 词：炼化装置 换热器腐蚀 抗高温缓蚀剂 合成工艺 腐蚀防护 

分 类 号：TQ050.96[化学工程] TE986[石油与天然气工程—石油机械设备]