Novel dimple jacket heat exchange ascension pipe of coke oven

Abstract

The invention discloses a novel dimple jacket heat exchange ascension pipe of a coke oven. The pipe is divided into two parts: the first part is an ascension pipe while the second part is a dimple jacket, wherein the dimple jacket and the ascension pipe are welded to form a closed space by a dimple jacket sealing cone at both ends of the dimple jacket, a holding structure is adopted between the ascension pipe and the dimple jacket, the ascension pipe and the dimple jacket are firmly connected as a whole, and a soft water inlet pipe and a steam-liquid two-phase outlet pipe are welded at the lower and upper parts of the dimple jacket. The ascension pipe disclosed by the invention has the advantages that the external pressure stability of the cylinder of the ascension pipe and the bearing capacity in the dimple jackets are improved, thus the novel efficient heat exchange ascension pipe is provided for waste heat recovery of raw coke oven gas of the coke oven.

Description

Technical field: [0001] The invention relates to the technical field of waste heat recovery and utilization of coke oven waste gas in the metallurgical coking industry, especially a novel honeycomb jacket type coke oven heat exchange riser, which adopts strengthening measures as a whole to improve the external pressure stability and honeycomb of the riser cylinder body. The pressure bearing capacity between the jackets can generate medium pressure (≥1.6MPa) steam in the waste heat recovery and utilization of raw coal gas. Background technique: [0002] At present, a large amount of high-temperature raw gas (about 750 ° C) is produced in the domestically known coking production, which enters the gas collection pipe through the riser pipe and bridge pipe and is cooled by circulating ammonia water. 80 ~ 85 ℃, enter the gas purification workshop for treatment, the heat brought out by the high temperature raw gas is wasted. Since the 1970s in my country, attempts have been made ...

AI Technical Summary

Problems solved by technology

Soft water absorbs the waste heat of raw gas in the jacketed riser and vaporizes to generate waste heat steam for production or domestic use. However, limited by the structure of the jacketed riser, the riser cylinder has a small capacity to withstand external pressure and can only produce 0.2MPa ~0.6MPa low-pressure steam, due to design, manufacturing reasons and system safety, stability and economical reasons, coke oven riser tube vaporization cooling devices have been stopped

[0003] So far, no mature, reliable, efficient and economical coke oven raw gas waste heat recovery and utilization technology has been found

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