Air preheater and production process suitable for same

Abstract

The invention discloses an air preheater comprising an air heater main body. The air heater main body is internally provided with a heat exchanger tube and is provided with a water inlet on the side wall, wherein the water inlet corresponds to the lower part of the heat exchanger tube and is connected with a pulse flushing device. A carbon black production process of the air preheater comprises an air preheater cleaning step comprising the following steps: enabling the pulse flushing device to flash water to the water inlet of the air preheater; enabling carbon black smoke to enter the lower part of the air preheater for pulse flushing; and momentarily atomizing the water entering the air preheater and rapidly increasing the size so that the carbon black smoke in the heat exchanger tube abruptly changes, has a pulse jitter effect and shakes carbon black powder remained on the inner wall of the heat exchanger tube to enter the next link along with the carbon black smoke. Accordingly, the carbon black powder in the carbon black smoke can not generate an attaching layer on the inner wall of the heat exchanger tube to keep the favorable heat-exchanging effect of the heat exchanger tube.

Description

technical field [0001] The invention relates to a carbon black preparation equipment and process, in particular, the invention relates to an air preheater and a production process suitable for the air preheater. Background technique [0002] Carbon black is a light, loose and extremely fine black powder whose main component is amorphous carbon. Its specific surface area is very large, ranging from 10-3000m2 / g. Products obtained by incomplete combustion or thermal decomposition under certain conditions (with greater adhesion). Carbon black has a wide range of applications. It can be used as a black dye to make Chinese ink, printing ink, paint, etc. It is also used as a reinforcing agent for rubber and plays an important role in the industrial field. [0003] Traditionally, in the carbon black production process, the reactor is the core equipment. The production of different types of carbon black mainly adopts reaction furnaces with different structural sizes and controls di...

AI Technical Summary

Problems solved by technology

[0007] The present invention aims at the defect that in the existing air preheater, the heat exchange tube is easily attached to carbon black powder, which causes the flue gas to flow unsmoothly, the thermal resistance of the dirt increases, and then affects the heat exchange efficiency and the production of carbon black, and provides a An air preheater and a carbon black production process using the air preheater, the air preheater and its corresponding carbon black production process are used to cool down the carbon black flue gas and preheat the air entering the reaction furnace At the same time, it can well solve the defect that carbon black powder is easily attached to the heat exchange tube inside the air preheater in the existing equipment and process, and the structure design of the present invention is reasonable and reliable, and the heat exchange effect is good; its corresponding process Simple, not easy to make the heat exchange tube of the preheater adhere to the carbon black layer

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