Preparation method of corrosion-resistant anti-scaling composite coating for water-cooled wall of garbage power plant

Abstract

The invention discloses a preparation method of a corrosion-resistant anti-scaling composite coating for a water-cooled wall of a garbage power plant, and belongs to the field of preparation of new materials. According to the technical scheme, 40% by mass of acrylic acid, 10% by mass of acetic acid and 50% by mass of n-Propyltrimethoxysilane are mixed and stirred in a stirrer at the temperature of 120 DEG C to prepare a mixture A; 50% by mass of cross-linked acetic anhydride and 50% by mass of mixed amide are mixed and stirred to prepare a cross-linking agent; 50% by mass of ethyl cellosolve and 50% by mass of diacetone are mixed and stirred, 20% by mass of the cross-linking agent is added, and stirring is carried out for 20 minutes to prepare a mixture B; and after coating is carried out, drying is conducted for 3 hours at the temperature of 180-500 DEG C, semi-metallurgical bonding is formed, and the bonding strength is 230 Mpa. Compared with the prior art, a coating material prepared by the preparation method can resist high temperature up to 800 DEG C, the bonding strength is 230Mpa, a permeation function is achieved, the surface hardness is HV800, wear resistance and corrosion resistance (15% hydrochloric acid resistance) are achieved, a non-stick resistance function is achieved, a heat energy absorption effect is achieved, and the service life is long.

Description

technical field [0001] The invention relates to a method for preparing a corrosion-resistant and anti-scaling composite coating on a water cooling wall of a garbage power plant, belonging to the field of new material preparation. Background technique [0002] With the increase of the calorific value of waste, the high temperature corrosion of waste heat boilers in waste incineration power plants has been plagued by its safety and stability. Therefore, it is imminent to solve the problem of high temperature corrosion of waste heat boilers in waste incineration power plants. The high-temperature corrosion of waste-to-energy plants has played a key role in the safety and stability of unit operation. At present, most of the research on corrosion problems in waste-to-energy plants in my country focuses on superheaters and heat exchangers, but according to waste-to-energy plants According to the actual operation survey, the corrosion problem of the water wall of the waste incinerat...

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Problems solved by technology

The high-temperature corrosion of waste-to-energy plants has played a key role in the safety and stability of unit operation. At present, most of the research on corrosion problems in waste-to-energy plants in my country focuses on superheaters and heat exchangers, but according to waste-to-energy plants According to the actual operation survey, the corrosion problem of the water wall of the waste incinerator is also relatively serious.

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