石油石化绿色低碳2025，Vol.10Issue(1)：70-76,7.DOI:10.20131/j.cnki.syshlsdt.20250310.010
催化裂化装置富胺液再生塔腐蚀原因分析
Cause Analysis of Corrosion in MDEA Regeneration Tower of FCC Unit
董克林 1刘韬 1张泽石 1樊继磊1
作者信息
- 1. 大连西太平洋石油化工有限公司,辽宁 大连 116600
- 折叠
摘要
Abstract
The descending plate and receiving tank of the rich amine liquid regeneration tower in the desulfurization unit of a certain petrochemical company's heavy oil catalytic cracking unit are severely corroded,resulting in a deterioration of the amine liquid regeneration effect and an abnormal increase in H2S content in the amine liquid,which in turn affects the desulfurization effect and leads to high H2S content in the desulfurized dry gas and liquefied gas,affecting the long-term safe operation of the unit.Analyze the causes of corrosion in the rich amine solvent regeneration tower through macro corrosion environment inspection,Aspen process simulation,and corrosion scale sample detection strategies.The results showed that the flow state of the regeneration riser in the device's reverse regeneration system was poor,and the amount of flue gas carried by the regeneration agent entering the reaction oil and gas increased,resulting in a nearly doubling of the CO2 content in the dry gas before desulfurization,which in turn caused an abnormal increase in the MDEA2CO3 content in the rich amine solution.The main corrosive medium of the rich amine solution regeneration tower is wet CO2 dissolved in the amine solution,and the presence of chloride ions will accelerate the destruction of the corrosion product film and promote CO2 synergistic corrosion.关键词
富胺液再生塔/腐蚀原因分析/CO2/氯离子/协同腐蚀Key words
MDEA regeneration tower/cause analysis of corrosion/carbon dioxide/chloride ions/synergistic corrosion分类
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董克林,刘韬,张泽石,樊继磊..催化裂化装置富胺液再生塔腐蚀原因分析[J].石油石化绿色低碳,2025,10(1):70-76,7.
