Smoke cooling device

Abstract

The invention discloses a smoke cooling device which comprises an upper pipe box used for leading in high-temperature smoke, a lower pipe box used for leading out cooled smoke, a heat exchange pipe used for communicating the upper pipe box and the lower pipe box and a heat exchange mechanism arranged between the upper pipe box and the lower pipe box. The heat exchange mechanism comprises a barrel used for leading in cooling water and leading out water steam obtained after heat exchange, a baffling mechanism arranged in the barrel, a water inlet arranged in the lower portion of the barrel and an upper portion speed increase cooling mechanism arranged at the upper portion of the barrel; the heat exchange pipe is arranged in the barrel in a penetrating manner; the upper portion speed increase cooling mechanism comprises an upper portion dilatation barrel arranged below the upper pipe box, an upper portion speed increase barrel arranged in the upper portion dilatation barrel in a penetrating manner and spaced with the upper portion dilatation barrel and a plurality of air outlets annularly formed in the periphery of the outer side of the upper portion dilatation barrel; and the lower end of the upper portion speed increase barrel is communicated with the upper end of the barrel, and the lower end of the upper portion dilatation barrel is fixedly arranged on the periphery of the outer side of the upper portion speed increase barrel. The smoke cooling device is high in heat exchange efficiency, high in safety factor and long in service life.

Description

technical field [0001] The invention relates to a flue gas cooling device. Background technique [0002] In some coal chemical industries or other industries, or subsequent processing industries, tail gas often needs to be treated. The process is treated by combustion to reduce the emission of combustibles, reduce the pollution to the atmosphere, and at the same time recover heat. There are many forms of flue gas cooling, but there are not many high-efficiency flue gas coolers that can operate. Tube sheet cracking is often encountered in engineering. The service life of flue gas coolers is generally five to ten years, and some are even shorter. Some even have leakage and tube sheet cracking problems during the start-up stage. [0003] The medium on the shell side of the flue gas cooler is usually water, which is used for heat exchange to generate steam, and the medium on the tube side is usually high-temperature and toxic materials. Once leaked, the damage will be very ser...

AI Technical Summary

Problems solved by technology

At the same time, there are occasions with high pressure, occasions with stress cracking, or occasions with high temperature, or occasions where the content of combustibles is not too high. In the past, some users directly burned the tail gas or these high-temperature process gases with a torch, or directly It is discharged into the atmosphere, causing serious pollution to the environment. At present, some domestic industries also use flue gas coolers to recover heat, but there are many defects in the structure, such as cracking of tube plate welds, low heat transfer efficiency, and low operating efficiency. wait

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