Ascension pipe of coke oven and method of applying same to recovery heat of raw coke oven gas

Abstract

An embodiment of the invention discloses an ascension pipe of a coke oven and a method of applying the same to recovery heat of raw coke oven gas. The ascension pipe of the coke oven comprises an inner wall and an outer wall and further comprises a suspension rod fixing rack, a suspension rod and at least one spoiler which is fixedly arranged on the suspension rod; the suspension rod fixing rack is mounted in the ascension pipe of the coke oven; the suspension rod and the suspension rod fixing rack are movably connected, so that the suspension rod is overhung in the ascension pipe of the coke oven and can rotate; at least one outer fluid inlet penetrating through the inner wall and the outer wall is formed on the side wall of the ascension pipe of the coke oven, so that an outer fluid is sprayed to the ascension pipe of the coke oven through the outer fluid inlet and drives the suspension rod and the spoiler to rotate. By adopting the technical scheme provided by the invention, the flow field of raw coke oven gas can be changed, the Reynolds number of coke oven gas flowing is increased and the heat exchange efficiency of the coke oven gas in the ascension pipe is improved, so that the recovery utilization ratio of heat of the coke oven gas is improved and the operating efficiency of the coke oven is improved.

Description

technical field [0001] The invention relates to the field of coking process waste heat recovery, in particular to a coke oven riser and a method for recovering raw gas heat by using the riser. Background technique [0002] During the coking process of the coking plant, the temperature of the raw gas escaping from the carbonization chamber through the riser is about 650°C-750°C, and the heat it brings out accounts for about 36% of the total output heat of the coke oven. Generally, the coking plant will This part of heat is recovered and reused to achieve the purpose of resource saving and environmental friendliness. [0003] At present, the raw gas heat recovery method generally used in coking plants is to pass a heat exchange medium between the inner wall and outer wall of the coke oven riser to form a heat exchange layer; figure 1 As shown, a heat exchange medium is passed between the inner wall 10 and the outer wall 11 of the coke oven riser. The raw coal gas is discharg...

AI Technical Summary

Problems solved by technology

However, in practical applications, due to the slow heat exchange between the raw gas near the center of the coke oven riser and the heat exchange medium, it often escapes from the coke oven riser before the heat exchange can be fully performed, so this heat recovery The heat exchange efficiency of the method is low, and the ability to recover heat is limited

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