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液化石油气在石化、燃气等工业及民用生活中得到广泛的应用。LPG主要从炼油厂回收液化石油气,通过原油蒸馏、二次加工、脱硫等工艺,其含硫量、水分难于保证符合要求。H_2S与LPG储罐的腐蚀息息相关,将H_2S指标控制在合理的范围内,可有效地减缓金属的腐蚀开裂等缺陷,是LPG储罐安全运行的必要保证。本文通过对液化石油气储罐检验中发现的缺陷,分析其原因,并提出预防措施,确保LPG储罐的安全运行,有效地减少维修费用,将会得到较高的经济效益和社会效益。
LPG has been widely used in petrochemical, gas and other industrial and civil life. LPG recovery of liquefied petroleum gas mainly from refineries, crude oil distillation, secondary processing, desulfurization and other processes, the sulfur content, moisture is difficult to ensure compliance. H_2S is closely related to the corrosion of LPG storage tanks. The H_2S index is controlled within a reasonable range, which can effectively reduce the defects such as metal corrosion and cracking, which is the necessary guarantee for the safe operation of LPG storage tanks. In this paper, the defects found in LPG storage tank inspection are analyzed, the reasons are analyzed, and the preventive measures are put forward to ensure the safe operation of LPG storage tank and reduce the maintenance cost effectively, which will result in higher economic and social benefits.