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Process for recycling desulfurization catalyst from HPF (Hydroquinone, PDS, Ferrous Sulfate) coking desulfuration waste liquid

A technology of coking desulfurization waste liquid and desulfurization catalyst, which is applied in the direction of physical/chemical process catalysts, catalyst regeneration/reactivation, chemical instruments and methods, etc., can solve the problems of increasing operating costs, and achieve the goal of reducing desulfurization costs and reducing serious pollution Effect

Active Publication Date: 2013-11-27
岳阳振兴中顺新材料科技股份有限公司
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Problems solved by technology

[0008] The invention provides a technical solution for recovering desulfurization catalyst from the desulfurization waste liquid produced in the process of adopting HPF wet oxidation desulfurization in coking plants, to solve the problem of desulfurization of desulfurization catalyst when the existing coke oven gas is desulfurized by HPF wet oxidation technology. The problem of increasing operating costs due to the loss of waste liquid

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  • Process for recycling desulfurization catalyst from HPF (Hydroquinone, PDS, Ferrous Sulfate) coking desulfuration waste liquid
  • Process for recycling desulfurization catalyst from HPF (Hydroquinone, PDS, Ferrous Sulfate) coking desulfuration waste liquid

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Embodiment 1

[0023] The desulfurization waste liquid used in this embodiment is the desulfurization waste liquid produced by the coke oven gas in the coking plant using HPF wet method to remove hydrogen sulfide. The process is as follows:

[0024] In the first step, take 500ml of desulfurization waste liquid, and filter the desulfurization waste liquid by means of suction filtration, and filter out 4.8g of insoluble matter;

[0025] In the second step, send the filtrate obtained in the first step above into the catalyst recoverer, and add 50ml of desulfurization catalyst recovering agent to the recoverer at the same time, the C:H:O in the recovering agent is 68.597:14.106:17.297, stir and mix , static, layered;

[0026] The third step is to collect the recovery liquid containing the catalyst in the upper layer of the recovery device in the second step above, and then send it to an evaporative dryer, and carry out evaporation and drying treatment under the condition of 60°C to 90°C, and the...

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Abstract

The invention relates to a process for recycling a desulfurization catalyst from an HPF (Hydroquinone, PDS, Ferrous Sulfate) coking desulfuration waste liquid. The process comprises the following step: adding a desulfurization catalyst recycling agent to a filtered coking desulfurization waste liquid, wherein the volume ratio of the desulfurization catalyst recycling agent to the waste liquid is 1: 10-1: 20; and stirring for mixing, standing and layering, then cooling an upper recycled solution containing a catalyst, feeding the recycled solution to an evaporative drier, and carrying out evaporative drying at 60-90 DEG C, wherein the evaporated-out desulfurization catalyst recycling agent is condensed and recycled and solid obtained in the evaporative drier is a desulfurization catalyst. According to the process disclosed by the invention, the problem that the operation cost of the desulfurization waste liquid is increased along with the loss of desulfurization waste liquid when existing coke oven gas is desulfurized by adopting an HPF wet oxidization technology is solved.

Description

technical field [0001] The invention relates to a process for recovering desulfurization catalyst from coking desulfurization waste liquid, in particular, a technical scheme for recovering desulfurization catalyst from desulfurization waste liquid produced in the HPF wet oxidation desulfurization process in a coking plant. Background technique [0002] Coking coal contains 0.5% to 1.2% sulfur, of which 20% to 45% sulfur enters the raw coal gas in the form of hydrogen sulfide and NH 3 Together with HCN, etc., it forms impurities in the gas. If these hydrogen sulfides are not removed, the air will be seriously polluted. At the same time, the existence of hydrogen sulfide can also cause corrosion of equipment and poisoning of catalysts, resulting in increased production costs and reduced product quality. Therefore, coke oven gas must be desulfurized before being used as fuel gas and synthesis gas. [0003] The HPF method is a wet oxidation desulfurization process independentl...

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Application Information

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IPC IPC(8): C02F9/10B01J38/00C02F1/26
Inventor 李国强张永发田波王兆文石玉良李珍珍梁言王亚珍
Owner 岳阳振兴中顺新材料科技股份有限公司
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