Extraction apparatus and method for producing hydrogen peroxide by anthraquinone method

Abstract

The invention relates to an extracting device for producing hydrogen peroxide by anthraquinone process and a method thereof; the device consists of a clarifying section 1, a filling section 2 and a settling section 3; the clarifying section 1, the filling section 2 and the settling section 3 are arranged sequentially from top to bottom; a heavy-phase distributor 11, a light-phase anti-backmixing filler 12 and a light-phase outlet 13 are arranged in the clarifying section 1; a gas distributor 8, a heavy-phase anti-backmixing filler 9, a light-phase distributor 10 and a heavy-phase outlet 7 are arranged in the settling section 3; the filling section 2 is internally composed of a plurality of packing boxes; the packing boxes are more than two plate-net ripple packing pieces and are interlaced mutually in 15-90 DEG along the direction of the ripple channel of two adjacent plate-net ripple pieces to overlap; the direction of the ripple channel of the plate-net ripple packing forms 15-75 DEG with the direction of the centre line of a packing extracting tower in vertical surface; the diameter of the packing box is less than the inner diameter of the tower of the filling section by 2-20mm; the height of the packing box is 50-300mm. the extracting device can intensify the transport process and improve extracting efficiency so as to reduce the height of transfer unit and save device investment.

Description

technical field [0001] The invention relates to an extraction equipment and method for producing hydrogen peroxide by an anthraquinone method, belonging to the equipment and process of chemical production. Background technique [0002] Hydrogen peroxide is an excellent oxidizing agent, widely used in many fields such as chemical synthesis, pulp, paper and textile bleaching, metal mineral treatment, environmental protection, electronics, military industry and aerospace. Today's leading hydrogen peroxide production is the anthraquinone method. The principle is to use anthraquinone as a hydrogen carrier, and then oxidize hydrogen peroxide in the air. The mass transfer efficiency of the hydrogen peroxide in the oxidized anthraquinone working solution extracted by the equipment and process is very low. It is also found through observation that the droplet diameter of the dispersed phase is large, and the large droplet diameter indicates that the mass transfer area is small, and t...

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Problems solved by technology

When the equipment is directly used in the extraction process of hydrogen peroxide in the anthraquinone working solution, since the density difference between the oil and water phases is less than 100kg / m 3 , and the viscosity of the oil phase, that is, the anthraquinone working solution is relatively high, which cannot enhance mass transfer.

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