Film type evaporator for recovering waste heat of semi-coke quenching

Abstract

The invention discloses a film type evaporator for recovering the waste heat of semi-coke quenching, and belongs to the technical field of coal chemical industry. The film type evaporator comprises acoke quenching tank. Multiple coke inlets are arranged in the top of the coke quenching tank. Multiple film type tubes are arranged in the coke quenching tank and are arranged under the coke inlets one to one. The top end of each film type tube is provided with a water inlet pipe and the bottom end is provided with a steam pipe. The film type tubes can be heated from both sides, the heating effectis good, the heating speed is fast, high temperature semi-cokes slide down along with the film type tubes, the heat releasing time in a furnace is prolonged, and the waste heat of semi-cokes can be fully absorbed. The film type evaporator has the advantages of low cost, energy saving and environment-friendly property, and good waste heat recovering effect.

Description

technical field [0001] The invention belongs to the technical field of coal chemical industry, and in particular relates to a film evaporator for recovering the residual heat of semi-coke quenching. Background technique [0002] The use of waste heat in factory production for urban heating is a key area of ​​exploration in the "13th Five-Year Plan" national development strategy. Semi-coke enterprises are the pillar industries in Yulin, Inner Mongolia, and Shanxi. The coal in these areas is bituminous coal. They are dry-distilled in the carbonization furnace to form semi-coke, and then sent out from the coke discharge port. Since the temperature of the semi-coke leaving the carbonization furnace is as high as 500°C, it needs to be cooled to 60°C for easy stacking and transportation. [0003] In the earliest semi-coke production, water seals were used to cool down the temperature, and the coke quenching wastewater was seriously polluted because it contained a large amount of ...

AI Technical Summary

Problems solved by technology

However, the improved coke quenching process has the problems of discontinuous water spraying and easy clogging of the nozzle holes, requiring a lot of on-site maintenance and labor

[0004] Although some technologies have proposed to use heat pipes to recover these semi-coke quenching waste heat, however, there is still a lack of effective technical measures and processing devices for how to realize the operation of heat pipe devices with high efficiency and low resistance.

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