Method and equipment for recycling crude gas waste heat in ascending pipes of coke oven

Abstract

The invention relates to a method and equipment for recycling crude gas waste heat in ascending pipes of a coke oven, and belongs to the technical field of the recycling of the crude gas waste heat of coke ovens. In the technical scheme, the method comprises the following steps that a centralized steam dome collects and separates steam and water of heat exchangers corresponding to all ascending pipes of the coke oven, and the separated steam is conveyed to the next process to be used from a steam outlet of the centralized steam dome; the separated water is pumped into a water feeding header pipe by a circulating water pump from a water outlet of the centralized steam dome and is distributed to the heat exchangers corresponding to all ascending pipes of the coke oven by each connection pipe, so that the water absorbs heat in the heat exchangers to be vaporized partially and flows into a backwater header pipe by the connection pipes, and the vaporized steam water mixture flows into the centralized steam dome by the backwater header pipe; and steam-water separation is performed, so that the separated steam flows out to be used in the next process, and the separated water flows into the next circulation again. Compared with a mode of controlling dozens of steam domes and hundreds of steam domes, the invention has the advantages that: the method and the equipment are easy and convenient to operate and control, namely only one centralized steam dome is needed to be controlled.

Description

technical field

[0001] The invention relates to a coke oven rising pipe raw gas waste heat recovery method and equipment, and belongs to the technical field of coke oven waste gas waste heat recovery and utilization. Background technique

[0002] As far as thermal energy utilization is concerned, a wealth of background technology has been accumulated in the industrial field since the British Industrial Revolution for hundreds of years. However, since the coke enterprises used the carbonization chamber method to burn coke in these background technologies, the waste heat of the high-temperature coke oven raw gas in the rising pipe has not been effectively utilized, and the heat can only be wasted by cooling down with circulating ammonia. For example, adopt water jacket method etc., all without success. In recent years, neither the heat pipe technology nor the heat transfer oil technology can run stably for a long period. The main problem is that none of these background techn...

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