Application method of hydrogen-rich gas produced after LNG process in coke oven heating

Abstract

An application method of hydrogen-rich gas produced after an LNG process in coke oven heating comprises the following steps: 1) the hydrogen-rich gas is mixed into a main coal gas pipeline, which is heated, through a hydrogen-rich gas adding pipeline according to 3-5% of the total amount of coal gas in order to form a heated mixed gas; 2) the mixed gas is preheated, and air is preheated; 3) the preheated mixed gas and the preheated air enter an updraft combustion chamber and undergo mixed combustion; 4) residual hot waste gas enters a downdraft combustion chamber through a crossing hole; and (5) the hot waste gas in the downdraft combustion chamber enters a downdraft heat storage chamber from an inclined channel and is finally discharged into the atmosphere from a large chimney to form a closed-loop gas flow circulation process. The application method of the hydrogen-rich gas produced after LNG process in coke oven heating adopts the hydrogen-rich gas for coke oven heating, so the current situation of waste of the hydrogen-rich gas is reduced, coal gas resources are saved, and meanwhile the problem of serious hidden danger of atmospheric pollution is solved.

Description

technical field [0001] The invention relates to the technical field of coking heating, in particular to a method for applying post-production hydrogen-rich gas in coke oven heating in an LNG process. Background technique [0002] The coking plant of Rizhao Company has newly launched the LNG process. LNG uses coke oven gas as raw material to remove 23-25% of CH4, and then produces regeneration gas, which we call hydrogen-rich gas; these large amounts of hydrogen-rich gas cannot be processed at the beginning of production. Utilization can only be temporarily ignited and released into the atmosphere, thereby causing certain pollution to the atmosphere. Contents of the invention [0003] The object of the present invention is to provide a method for applying post-production hydrogen-rich gas in coke oven heating in the LNG process. Using hydrogen-rich gas in coke oven heating not only reduces the waste of hydrogen-rich gas, but also saves gas resources and at the same time It...

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Problems solved by technology

[0003] The object of the present invention is to provide a method for applying post-production hydrogen-rich gas in coke oven heating in the LNG process. Using hydrogen-rich gas in coke oven heating not only reduces the waste of hydrogen-rich gas, but also saves gas resources and at the same time It also solves the serious hidden danger of air pollution

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