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中国石油化工总公司石油化工防腐蚀考察团赴美考察了美国炼油设备的腐蚀与防护技术。 NAICO公司,以研究化学药剂防护为专长。加州原油含硫量高达4％,酸值高达2.2,该公司认为常减压塔低温部位的主要腐蚀介质为HCI-H_2S-H_2O及SO_2(H_2SO_3)。针对H_2SO_3研制了中和剂,取得了良好的效果。配合使用缓蚀剂5180后可使常压塔顶气液两相都得到保护。 EXXON公司的贝汤炼油厂,以防止环烷酸的腐蚀为重点。当原油酸值小于0.5时,炉管用Cr5Mo,含硫量高时用Cr9Mo;当酸值在0.5～2时,要限制原油流速小于100m/s,可
China Petrochemical Corporation Petrochemical anti-corrosion mission to the United States inspected the US oil refining equipment corrosion and protection technology. NAICO company, specializing in the study of chemical protection. California crude oil contains up to 4% sulfur and an acid value of up to 2.2. The company believes that the main corrosive medium in the cryogenic section of the vacuum tower is HCI-H 2 S-H 2 O and SO 2 (H 2 SO 3). Aiming at H_2SO_3, a neutralizer has been developed and achieved good results. With the use of corrosion inhibitor 5180 atmospheric pressure can be made after the gas-liquid two-phase are protected. EXXON Pui Yan refinery to prevent naphthenic acid corrosion focused. When the crude oil acid value is less than 0.5, the furnace tube with Cr5Mo, high sulfur content with Cr9Mo; when the acid value of 0.5 to 2, to limit the crude oil flow rate less than 100m / s,