Production method of pigment carbon black applied to leather color paste

Abstract

The invention relates to the technical field of pigment carbon black, and discloses a production method of pigment carbon black applied to leather color paste. Natural gas serves as fuel, anthracene oil serves as a raw material, potassium hydroxide serves as an additive, the natural gas and hot air heated through a high-temperature air preheater are completely combusted in a combustion chamber to generate high-temperature combustion residual gas, and the additive and raw oil are fully mixed in a mixer and then sprayed into the high-temperature combustion residual gas through a raw oil gun. Under the action of thermal kinetic energy provided by high-temperature combustion residual gas, raw oil is cracked to generate carbon black, demineralized water is sprayed into high-temperature flue gas in a horizontal quenching section (vaporization) for direct cooling to terminate a carbon black generation reaction (main reaction), medium-pressure steam is sprayed in a vertical quenching section to perform an activation reaction (side reaction) on carbon black particles, and the carbon black obtained by the method disclosed by the invention has the characteristics of high purity, good blackness, strong covering power, easiness in dispersion compared with products of the same series, and the like.

Description

technical field [0001] The invention belongs to the technical field of pigment carbon black, and more specifically relates to a production method of pigment carbon black applied to leather color paste. Background technique [0002] At present, in terms of oil furnace pigment carbon black, through modification treatment, a series of new varieties of easily dispersible carbon black have been developed for the ink and coating industries, and have been popularized and applied. However, in terms of high-grade pigment carbon black varieties, there is still a big gap with foreign countries in terms of production technology, equipment level, energy saving and environmental protection. The output of high-quality pigment carbon black is small in my country, and the quality is unstable. Although some domestic carbon black companies have begun to lean towards the special-purpose carbon black industry, under this background, carbon black companies must develop new products, comply with ...

AI Technical Summary

Problems solved by technology

In actual production, the produced pigment carbon black has a high content of impurities, and impurities are likely to be generated during the production process. The residue content of 325 mesh sieve is high, and the content of heavy metals is high. Because the carbon black used in leather colorants requires high purity and blackness Carbon black with high index requirements, specific surface area and high activity, such as a pigment carbon black production system and its production process disclosed by the publication number CN106947299A with low impurity content. In the production process, the raw material oil is pre-passed through 4 oil Filtration device, pre-dissolved with water before compounding additives, quenched water needs to be purified before use, reducing the content of non-carbon impurities, carbon black through the ultra-fine pulverizer, reducing the content of 325-mesh sieve residue, increasing The purity of the pigment carbon black has been determined. It has been found in practice that in actual production, the dispersibility of the produced pigment carbon black is unstable, which affects the blackness and hiding power of the product, and the product quality is also unstable.

Images