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扬子石化公司669＃工艺热力外管是生产装量的公用配套工程,是连接各生产装量的大动脉.该工程于1987年5月完工并投入运行,其工程宏大,材料消耗可观,仅保温材料消耗约1.5万m~2,保温铝皮约22.5万m~2.1988年11月在工艺外管改造中发现保温管道铝合金外护层的几个不同点上均有腐蚀现象.为此我们组织调研小组对以乙烯大道为重点的保温管道进行了随机调查.本文仅对腐蚀原因和腐蚀机理进行分析、探讨,并提出防腐对策.
Yangzi Petrochemical Company 669 # process heat pipe is the production of public facilities supporting the project, is connected to the production of large arteries in. The project was completed in May 1987 and put into operation, the project ambitious, significant material consumption, only thermal insulation materials Consumption of about 15000 m ~ 2, thermal insulation of about 225,000 m ~ 2. In 1988 November in the process of transformation of the outer pipe found in aluminum pipe insulation at several different points have corrosion .To this end we organize research The team conducted a random survey of the insulated pipelines, which are mainly focused on Ethylene Boulevard.This article only analyzes and discusses the causes of corrosion and corrosion mechanism, and proposes the anticorrosion measures.