Production method of pigment carbon black applied to coating

Abstract

The invention provides a production method of pigment carbon black applied to coating. A production technology of carbon black through an oil-gas furnace method specifically comprises the following steps: after filtering air, compressing the air through a Roots blower until the pressure is 0.16 to 0.19Mpa; heating to 700 to 750 DEG C through a high-temperature air pre-heater at 800 DEG C, and thenconveying the air into a combustion chamber; axially conveying natural gas with the flow of 400Nm<3> / h and the pressure of 75kpa into the combustion chamber to be mixed with hot air with the flow of5500Nm<3> / h; then sufficiently combusting and controlling the temperature of the combustion chamber to be 1850 to 1950 DEG C; enabling hot flue gas obtained by combustion to flow through a throat section of a reaction furnace at a high speed; spraying raw oil which is mixed with 20kg / h of an additive and has the flow of 1650kg / h into high-temperature flue gas from the throat section and carrying out cracking and polymerization reaction under the pressure of 65Kpa to generate the carbon black; finally, after sieving through a sieving machine with the size of 35 to 80 meshes, conveying a productinto a finished-product storage tank; and packaging to obtain the pigment carbon black. In a continuous production process, the quality of the carbon black is stable; and technical means including the raw oil, the high-temperature flue gas, temperature, pressure, ozone introduction and the like is combined to improve the quality of the pigment carbon black for the coating.

Description

Technical field [0001] The present invention belongs to the technical field of pigment carbon black, and more specifically relates to a production method of pigment carbon black applied to paint. Background technique [0002] Currently, about 90% of the total carbon black products are used in the rubber industry, and the consumption of other industries such as inks, coatings, and plastics only accounts for 10% of the total carbon black. However, these industries have certain proprietary and special requirements for the application performance of carbon black. Therefore, the carbon black used in this part of the application is often called special carbon black or special carbon black. Whether it can produce high-quality special carbon black is also It can be used as one of the important indicators to measure the technical level of carbon black production enterprises; high-quality pigment carbon black for coatings has a small output in China, and the quality is unstable. During the...

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Problems solved by technology

[0004] The object of the present invention is to provide a kind of production method of the pigment carbon black that is applied to paint, solves the problem that in the prior art, the quality of pigment carbon black is not stable, and its technical index blackness, tinting strength, degree of dispersion cannot reach high-end paint users Requirements and other problems, the prior art also has the technical indicators of its pigment carbon black products in the early stage of trial production and can meet the requirements, but the situation of unstable carbon black quality occurs in the later stage; The carbon black reaction furnace in the middle does not need to be adjusted greatly, which greatly reduces the cost of the enterprise

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