Pigment carbon black reacting furnace with super-long remaining section and pigment carbon black produced by the pigment carbon black reacting furnace

Abstract

The invention discloses a pigment carbon black reacting furnace with a super-long remaining section. The pigment carbon black reacting furnace is functionally divided into five sections: the first section is a burning section with a highly diffused turbulent flame generated by sufficiently mixing and burning the liquid or gas fuel and proper preheated air; the second section is a pipe section for spraying the preheated arene raw material oil; the third section is a reacting section for performing thermal cracking reaction on the foggy arene raw material oil, and generating and growing the carbon black crystal nucleus; the fourth section is a quenching section for radially spraying foggy quenching water to the reacting furnace to terminate the carbon black thermal cracking reaction; the fifth section is a remaining section which is relatively over-longer than a common reaction furnace for activating the carbon black. The invention additionally discloses pigment carbon black produced in the carbon black reaction furnace. By adopting the remaining section of the overlong reaction furnace, the methylbenzene light transmittance of the pigment carbon black product can be obviously increased, the polyaromatic hydrocarbon content can be reduced, the surface smoothness of the carbon black can be increased, and the dispersibility of the carbon black in the application systems such as paint, printing ink and plastic can be increased.

Description

technical field [0001] The invention relates to a pigment carbon black reaction furnace with an ultra-long residence period and the pigment carbon black produced therefrom, belonging to the field of carbon black production. Background technique [0002] The reaction furnace of furnace carbon black is the core equipment of carbon black production equipment. The technological progress of carbon black furnace carbon black industry is ultimately the technological progress of carbon black reaction furnace. [0003] In 1971, a series of new varieties of tread carbon black appeared in the world, called new process carbon black. Due to its high yield and good performance, it soon became the mainstream product of furnace carbon black. The reaction furnace for producing new process carbon black was It is called a new process carbon black reactor or a second-generation reactor. Its biggest feature is that it separates the combustion and cracking stages of carbon black production. Compa...

AI Technical Summary

Problems solved by technology

There are generally two problems in pigment carbon black products produced by using such a reaction furnace: the first is that carbon black is not easy to disperse

The second is that uncracked oily hydrocarbons are adsorbed on the surface of some of the produced carbon black, resulting in low transmittance of toluene and high content of polycyclic aromatic hydrocarbons, which intensifies the difficulty of dispersing carbon black in the application system. Cycloaromatic hydrocarbons are harmful to human health and do not meet the requirements of environmental protection, health and safety

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