Method for spraying coating and killing coating on surface of oil tank and for jointly preventing corrosion

A surface spraying and coating technology, used in devices for coating liquids on surfaces, paints containing biocides, coatings, etc. Excellent anti-corrosion performance, reducing the effect of microbial corrosion and corrosion under scale
CN102744186AActive Publication Date: 2012-10-24CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2012-10-24

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Abstract

The invention discloses a method for spraying a coating and a killing coating on the surface of an oil tank and for jointly preventing corrosion, wherein a metal corrosion prevention coating is sprayed on the metal surface of an oil tank base body at first; and next, the killing coating taking natural asphalt-improved epoxy resin as a base body, taking polyamide or isocyanate as a cross-linking agent, and taking quaternary ammonium or styrene-acrylic isothiazolinone as a killing agent, is coated on the surface of the sprayed metal coating. According to the method for spraying the coating and the killing coating on the surface of the oil tank and for jointly preventing the corrosion, due to the metal coating and the killing coating, double protections are formed for the inner wall of a tank body; and therefore, the corrosion of microorganism in a water accumulation area on the bottom of the oil tank is prevented; the even corrosion rate and the hole corrosion tendency are effectively decreased; the corrosion prevention performance in a sedimentation water area of the oil tank is excellent; and the service life of the oil tank is prolonged.
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Description

technical field

[0001] The invention belongs to the technical field of metal corrosion and protection, and relates to an anticorrosion method for metal oil tanks, in particular to a combined anticorrosion method of oil tank surface spraying and biocidal coating. Background technique

[0002] In recent years, high-acid, high-sulfur, high-water-content crude oil has continuously entered my country, aggravating the corrosion in oil tanks, making domestic oil tanks safe and maintenance-free production cycle generally only 3 to 5 years. At present, there has been great development in the research of oil tank corrosion and protection technology. The corrosion status of oil tanks, the causes of corrosion and the influencing factors of oil tank corrosion, including the influence of microorganisms in the bottom sludge of oil tanks on corrosion, corrosion There have been some research results on the evaluation methods of the reliability of oil storage tanks under environmental conditi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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