Efficient heat transfer tube of heat exchanger for recycling smoke waste heat

Abstract

The invention provides an efficient heat transfer tube of a heat exchanger for recycling smoke waste heat, which consists of an inlet header, a vertical serpentine pipe, a spike tooth rib column which is provided with annular grooves and arranged obliquely, and an outlet header. The heat exchanger mainly solves three problems: 1, the vertical serpentine pipe is adopted to reduce wearing speed; 2, the spike tooth rib column is arranged obliquely to make dust in the smoke fall naturally; and 3, in order to increase the heat exchange area to a large extend and increase the disturbance of the smoke and the residence time in a flue, the spike tooth rib column is provided with two annular grooves. The invention reduces a part of wear, prevents dust accumulation, and increases the heat transfer area, and the method is simple, is easy to implement, can significantly prolong the service life of the heat exchanger of a waste heat boiler, reduces the volume of the waste heat boiler and saves materials.

Description

technical field [0001] The invention relates to a high-efficiency heat transfer tube of a flue gas waste heat heat exchange device. The utility model belongs to the equipment field of a waste heat recovery system. Background technique [0002] The use of waste heat boiler is the key equipment of waste heat recovery system. The improvement of the performance of its heat transfer tube can reduce the volume of heat exchanger, save materials, improve heat exchange efficiency, and reduce dust accumulation and wear. Due to the characteristics of waste heat - small temperature difference, unstable heat load, large dust content in the flue gas, corrosive flue gas, low convective heat transfer coefficient with the heat transfer surface, and limited by the inherent conditions of the installation site, the accumulated The ash and corrosion problems are the key to the success of waste heat boilers. It can be said that an important aspect of the development of waste heat boilers is to c...

AI Technical Summary

Problems solved by technology

The heat exchanger is a key part of the waste heat boiler. At present, the heat exchangers of the waste heat boiler mostly use bare tubes, membrane tubes, and spiral finned tubes. Among them, the heat exchange efficiency of the bare tube is low, and the wear and corrosion are serious; Poor dust accumulation; the spiral finned tube is better than the previous two, but it also has serious problems of dust accumulation and corrosion, which still has not achieved satisfactory results and needs to be improved

The pipe will reduce the service life of the heat exchanger due to the influence of dust accumulation and corrosion, and in severe cases, it will directly cause the pipe to burst

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