Boiler sewage treatment device and method for coke dry quenching system

Abstract

The invention provides a boiler-discharged-wastewater treating device and method for a coke dry quenching system. The boiler-discharged-wastewater treating method includes the step that wastewater discharged from a boiler is guided into a water sealing trough of the dry quenching boiler through the boiler-discharged-wastewater treating device. The boiler-discharged-wastewater treating device is characterized by comprising a constant discharging flash vessel (1), a cooler (2) and a water tank (3), wherein the constant discharging flash vessel (1), the cooler (2) and the water tank (3) are sequentially communicated; a water inlet of the constant discharging flash vessel (1) is communicated with a wastewater discharging opening of the boiler, a water outlet of the water tank (3) is communicated with a water inlet header pipe (14) of the water sealing trough of the dry quenching boiler, and a pressurizing pump (4) is arranged between the water tank (3) and the water inlet header pipe (14) of the water sealing trough. According to the boiler-discharged-wastewater treating device and method, the wastewater discharged from the boiler is guided into the water sealing trough of the dry quenching boiler through the boiler-discharged-wastewater treating device, the wastewater discharged from the boiler is recycled, the waste, caused by direct outward discharging of the wastewater, of water resources is avoided, the water consumption of the coke dry quenching system can be effectively reduced, and the using environment of the water sealing trough can be improved.

Description

technical field [0001] The invention relates to the technical field of coke dry quenching, in particular to a boiler sewage treatment device and method for a coke dry quenching system. Background technique [0002] The important components of the CDQ system include the CDQ furnace and the boiler. During the CDQ production operation, the red coke is cooled by the inert circulating gas in the CDQ furnace. After absorbing the sensible heat of the red coke, the high-temperature inert circulating gas is passed through once Coarse powder coke is removed by the dust collector and enters the boiler. The boiler absorbs heat and generates steam. The cooled inert circulating gas passes through the secondary dust collector to remove fine particle powder coke, and then is blown into the CDQ furnace by the circulating fan to continue cooling the red coke. [0003] Due to the requirements of the boiler on the quality of the boiler water, in order to ensure the safe operation of the boiler,...

AI Technical Summary

Problems solved by technology

At present, most of the treatment methods for boiler sewage are to discharge them directly after the expansion of the container, which will cause waste of water resources on the one hand, and increase the burden of sewage treatment on the coking plant on the other hand.

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