Dry-wet method gas-water synergistic coke quenching steam plume elimination discharge method and device

Abstract

The invention discloses a dry-wet method gas-water synergistic coke quenching steam plume elimination discharge method and a device, and relates to the technical field of steam plume elimination. Thedry-wet method gas-water synergistic coke quenching steam plume elimination discharge method comprises the following steps: 1) performing quenching by utilizing a nitrogen gas in a coke high-temperature section of 550-1050 DEG C; and 2) performing quenching by utilizing critical water with a temperature of >= 95 DEG C in a coke medium-temperature section of 200-550 DEG C. The method and device provided by the invention solve the problem that a coking production enterprise cannot solve water balance of a coking production system only by using a dry quenching process, and solve the problems thatsteam discharged from a singly-used wet quenching process pollutes the surrounding environment and steam plume elimination discharge needs to heat the steam to consume a large amount of energy sources; and the method and device have the advantages of energy saving, environmental protection, safety and economy.

Description

technical field [0001] The invention relates to the technical field of steam whitening, in particular to a dry-wet gas-water coke quenching steam whitening discharge method and device. Background technique [0002] The steam generated by the traditional wet coke quenching carries a large amount of dust, tar and other highly polluting and refractory substances, which are directly discharged into the atmosphere, which will cause serious environmental pollution. The current traditional treatment method is to collect steam through the gas gathering system, and then discharge it into the atmosphere through dust removal, condensation dehydration, purification, and whitening. This method has the following disadvantages: (1) It consumes a lot of energy and requires a lot of energy to heat steam and air; (2) No matter whether it uses fresh water or biochemical effluent, the process of circulating quenching water must be coke quenching evaporation, White condensate recovery, and recy...

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Problems solved by technology

This method has the following disadvantages: (1) It consumes a lot of energy and requires a lot of energy to heat steam and air; (2) No matter whether it uses fresh water or biochemical effluent, the process of circulating quenching water must be coke quenching evaporation, White condensate is recycled, and the recycling of coke quenching water will cause pollutants in the steam to exceed the standard. If it is not recycled, it will cause a serious burden on the existing purification water system of coking, and even cause the collapse of the biochemical water purification system

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