Novel soft carbon black reaction furnace

Abstract

The invention relates to a device for producing soft carbon black. A necking section of a reaction furnace is designed into an arc smooth curve structure and is tangent with a reaction section. Raw material oil ejected from a raw material oil spray gun nozzle meets rotary high-temperature burning residual gas entering the reaction furnace from upper and lower tangent combustion chambers on two sides of the reaction furnace, a small part of the raw material oil is burnt to provide enough heat, and most of the raw material oil is cracked to generate the carbon black. The necking section adopts the smooth arc curve structure, and the reaction airflow can stably pass through the necking section in a rotary plug flow form by controlling air quantities of inlets of the two combustion chambers, so the 'back mixing' phenomenon is reduced, the frequent coking phenomenon of the soft carbon black due to large treatment quantity and low reaction temperature is avoided, the quality of the carbon black is improved, and the yield of the carbon black is improved.

Description

[0001] The invention relates to a soft carbon black reaction furnace. technical field [0002] The formation of carbon black is based on liquid or gaseous hydrocarbons as fuel, which are completely burned in the combustion chamber of the reaction furnace to generate high-temperature smoldering gas flow and sent to the reaction area, and the raw material oil (high carbon content) injected through the raw oil gun (2) Hydrocarbons or other organic substance mixtures) collide with each other, a small part of the raw material oil is incompletely burned to supplement the required heat, and most of the raw material oil is cracked to form carbon black. In the quenching section, the reaction is stopped by spraying quenching water. The carbon black flue gas containing water vapor passes through a series of heat exchange measures and enters the collection system. The collected powdery carbon black is granulated and dried to become finished carbon black particles. [0003] The carbon blac...

AI Technical Summary

Problems solved by technology

The disadvantage is that at the sudden change of the contraction section (4), the reaction air flow is prone to "reverse mixing" phenomenon due to severe turbulence, and it is often easy to throw unreacted raw material oil on the furnace wall, resulting in hard carbon and affecting the product. Quality, which reduces the performance of compound glue

In order to avoid this phenomenon in the process, the method of reducing the production load is often adopted, that is, reducing the flow of combustion air, fuel and raw oil into the furnace at the same time, but the output of carbon black also decreases.

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