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| Effect factors analysis of corrosion of oil amospheric distillation tower based on grey system theory |
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WANG Zheng-fang1,2,WANG Yong1,HE Qing-kun1,LIU Xiu-hua3,HAN Tao1
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(1. College of Mechanical and Electronic Engineering in China University of Petroleum，Dongying 257061，China ;2. Department of Mechanical Engineering, Zibo Vocational College, Zibo 255314, China;3. Boiler & Pressure Inspection Institute of Zibo, Zibo 255030，China)
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| Abstract: |
| Shengli and Middle-east crude oil were refined in the first and third atmospheric distillation unit separately and the corrosion is serious. The corrosion rate on the top of the atmospheric distillation tower was measured using electric resistance probe. The sulfur value, salt value, salt value after desalt, acid value in crude oil and iron ion value in product container were monitored every one or two month. Grey correlation analysis was carried on by grey system theory. The absolute, relative and synthetic degree of incidence were calculated. The computational solution and the reason of corrosion were analyzed. The main factor related to the corrosion is acid value on the first atmospheric distillation unit, but the main factor is salt value after desalt in crudes for the third atmospheric distillation unit. |
| Key words: corrosion correlation analysis grey system theory atmospheric and vacuum distillation unit predominance analysis |
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