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Method for treating waste coking oven gas desulfurization solution

A technology for desulfurization waste liquid and coke oven gas, which is applied in the purification of liquid scrubbing gas, etc., can solve the problems of incomplete harmless treatment of desulfurization waste liquid, and achieve the effects of eliminating pollution, avoiding agglomeration and reducing corrosion.

Inactive Publication Date: 2010-08-11
NINGBO IRON & STEEL
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AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a treatment method for coke oven gas desulfurization waste liquid to solve the problem of incomplete harmless treatment of desulfurization waste liquid in the prior art

Method used

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  • Method for treating waste coking oven gas desulfurization solution

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Embodiment 1

[0017] Such as figure 1 As shown, the desulfurization waste liquid is stored in the waste liquid tank of the desulfurization section, and the desulfurization waste liquid pump 2 is used to send the desulfurization waste liquid to In the coal tower of the coke oven, 12 large channel nozzles DN15HHSJX-316-90-120 are arranged in a ring at the coal tower, and the waste liquid is evenly sprayed into the coking coal during the process of coking coal on the coal tower. The coking coal mixed with the desulfurization liquid decomposes the harmful substances in the desulfurization waste liquid during the high-temperature dry distillation process, so as to achieve the purpose of harmless treatment.

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Abstract

The invention relates to a method for treating waste coking oven gas desulfurization solution, comprising the following steps: (1) setting up a pipeline from a waste coking oven gas desulfurization solution tank (1) and to the top of a coal tower (3); (2) transporting the waste coking oven gas desulfurization solution to the top of the coal tower (3) by using a waste coking oven gas desulfurization solution pump (2); (3) arranging an annular spraying pipe (4) on the top of the coal tower (3), wherein each spraying branch pipe is provided with a valve and a spray nozzle; (4) spraying the waste coking oven gas desulfurization solution to all coal storage tanks which are arranged on the top of the coal tower (3) under the outlet pressure of the waste coking oven gas desulfurization solution pump (2), and mixing the waste coking oven gas desulfurization solution with coking coal; and (5) decomposing the waste coking oven gas desulfurization solution at the high temperature of 1100-1200 DEG C in a coking oven. The invention can solve the problem existing in the prior art that the waste coking oven gas desulfurization solution can be not treated harmlessly and thoroughly.

Description

technical field [0001] The invention belongs to the field of waste liquid treatment of a wet oxidation desulfurization process, and in particular relates to a treatment method for coke oven gas desulfurization waste liquid. Background technique [0002] Most of the desulfurization waste liquid by HPF method in coking plant is transported to the coal yard by tank truck, and then sprayed on the coal pile. The following unfavorable factors appear in the actual operation process: [0003] 1) It often happens that the desulfurization waste liquid just sprayed on the coal pile flows to the ground along the coal pile, and then enters the rainwater, causing environmental protection accidents; [0004] 2) Concentrated discharge into the coal causes local coal moisture to be high, agglomerated, and the chute is blocked. [0005] 3) In rainy days, the desulfurization waste liquid cannot be discharged because the coal pile cannot accept the desulfurization liquid, which affects the pro...

Claims

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Application Information

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IPC IPC(8): C10K1/08
Inventor 王玉萍
Owner NINGBO IRON & STEEL
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