Coking desulphurization waste liquid filtering decoloring system
A technology for coking desulfurization waste liquid and desulfurization waste liquid, which is applied in chemical instruments and methods, gaseous effluent wastewater treatment, water/sewage multi-stage treatment, etc. It can solve the problems of high consumption of activated carbon, high requirements for decolorization operations, long reaction time, etc. question
Active Publication Date: 2015-04-08
BEIJING SHOUGANG INT ENG TECH
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Problems solved by technology
[0003] The purpose of the present invention is to provide a filtration and decolorization system for coking desulfurization waste liquid, which overcomes the above-mentioned shortcomings of high decolorization operation requirements for desulfurization waste liquid, long reaction time, high consumption of activated carbon, and high labor intensity of workers
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[0013] exist figure 1 In the shown embodiment, the desulfurization waste liquid from the ammonia desulfurization process of the coking desulfurization section enters the filtrate head tank 1, and adjusts the flow rate by 12m through the pipeline and the flow regulating valve 2 3 / h flows into the lower part of the decolorization tank 3 for filtration, and after preliminary filtration to remove solid impurities in the desulfurization liquid, it enters the middle tank 4 of the filtrate, and is sent to the high level tank 6 of the decolorization liquid through the middle pump 5 and pipeline, and passes through the pipeline and flow regulating valve 2 Adjust flow rate 12m 3 / h flows into the upper part of the decolorization box 3 for decolorization, removes the colored groups in the desulfurization liquid, and the desulfurization waste liquid becomes a colorless transparent liquid and is sent to the subsequent processing device.
[0014] The decolorization medium in the decoloriz...
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Abstract
A coking desulphurization waste liquid filtering decoloring technology belongs to the technical field of gas desulphurization in the metallurgy coking industry. A coking desulphurization waste liquid filtering decoloring system for implementing the technology comprises a filtering liquid head tank (1), flow control valves (2), a decoloring box (3), a filtering liquid intermediate tank (4), an intermediate pump (5) and a decoloring liquid head tank (6). The decoloring box (3) has two segments comprising an upper decoloring segment and a lower filtering segment, a desulphurization waste liquid enters the filtering liquid head tank (1), goes through a pipeline and one of the flow control valves (2), enters the decoloring box (3), is filtered by the lower segment and enters the filtering liquid intermediate tank (4), the liquid in the filtering liquid intermediate tank (4) is sent to the decoloring liquid head tank (6) by the intermediate pump (5), and the liquid in the decoloring liquid head tank (6) goes through a pipeline and the other one of the flow control valves (2), enters the upper segment of the decoloring box (3) and is decolored, and the decolored desulphurization waste liquid is sent to a subsequent process and is processed. Active carbon enters the decoloring box (3) from the top, is used for filtering decoloring, and is discharged from the bottom of the decoloring box (3) to a coal yard. The technology has the advantages of few devices, low running cost, small labor intensity of workers, simple operation and less maintenance.
Description
technical field [0001] The invention belongs to the technical field of coal gas desulfurization in the metallurgical coking industry. In particular, it relates to a filtration and decolorization system for coking desulfurization waste liquid, which can filter and decolorize the waste liquid generated in the coking gas desulfurization process, especially a decolorization box that utilizes the adsorption performance of activated carbon to realize the function of filtering and decolorizing the desulfurization waste liquid. Background technique [0002] At present, many domestic coking enterprises adopt the wet oxidation desulfurization process using ammonia in the gas as the alkali source, which is characterized by low investment and high desulfurization efficiency. However, this process requires a certain amount of desulfurization waste liquid to be discharged regularly to ensure desulfurization efficiency. Desulfurization waste liquid needs to be decolorized before treatment...
Claims
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IPC IPC(8): C02F9/02
CPCC02F1/281C02F9/00C02F2103/18C02F2301/08
Inventor 侯添王玉松朱灿朋吴天礼李义超胡美权王帆
Owner BEIJING SHOUGANG INT ENG TECH