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      1. Overview

        In recent years, the sulfur content of crude oil is increasing year by year. Taking Luoyang Petrochemical General Plant as an example, the sulfur content of mixed crude oil processed before 1995 was 0.5%, and increased to 0.7% from 1997 to 1998. However, the sulfur content of Oman crude oil was as high as 0.9% in 2006 and exceeded 1.0% in Oman crude oil. That is to say, the sulfur content of crude oil doubled in five years. With the increase of sulfur content in crude oil, the corrosion rate of equipment is accelerating, which has a great negative impact on the safety, stability and long-term operation of the equipment. In some corrosion prone parts, leakage, oil leakage, even fire and explosion accidents occur frequently. It has been proved by many years of practice that the most practical way to prevent corrosion is to use glass lined equipment. As an anti-corrosion material, enamel has the following advantages:

         

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