Method and system for recycling catalyst from coal chemical liquid waste

Abstract

The invention discloses a method and a system for recycling catalyst from coal chemical liquid waste. The method comprises the following steps: pretreatment: removing suspended matters out of the coal chemical liquid waste to obtain preliminary filter liquid waste; and ceramic film separation: pumping the preliminary filter liquid waste in a ceramic film separating device for filtering to obtain concentrated solution, and concentrating and drying the obtained concentrated solution to obtain a catalyst. According to the invention, the ceramic film separating device is used for recycling the catalyst from the coal chemical liquid waste, and the ceramic film separating device is used for recycling and filtering the catalyst for multiple times to obtain purified water and recyclable concentrated solution finally; through adoption of the technical scheme, the material loss caused by drainage during the catalyst production process is reduced, the recycled materials are pure and clean, the yield rate during the catalyst production process is improved, and the effects of pollutant emission reduction and environment protection are achieved.

Description

technical field [0001] The invention relates to the field of waste liquid recovery, in particular to a method and system for recovering catalysts from coal chemical waste liquid. Background technique [0002] The preparation of catalysts, especially the preparation of catalysts in the coal chemical production process is an important link. These catalysts are mainly prepared from raw materials such as coal powder or coal slurry, metal compounds, etc., which are fully mixed and reacted, and then washed, filtered and dried. , the shape of these products is mostly black solid of fine powder. During the above-mentioned catalyst production process, a large amount of coal chemical waste liquid will be discharged, and the main discharge point is the coal chemical waste liquid discharged from the gelation of the catalyst production process and the filtration process of the washing unit, and the coal chemical waste liquid contains a relatively high concentration These pollutants are ...

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