Raffinade dewatering technology in anthraquinone method production of hydrogen peroxide

A technology of raffinate and hydrogen peroxide, applied in water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problem that the quality of hydrogen peroxide cannot meet the quality standards of hydrogen peroxide products, the impact, and the whitening of alkaline solution Solve problems such as soil bed damage, achieve the effects of reducing energy consumption, simplifying the operation process, and reducing production costs

Active Publication Date: 2015-02-25
SHANGHAI ANHORN ENVIRONMENTAL TECH CO LTD
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Problems solved by technology

[0007] In the above dehydration process, the traditional alkaline solution dehydration process is used. The residual alkaline solution will cause damage to the clay bed. At the same time, there will be alkali metal ions in the circulating work

Method used

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  • Raffinade dewatering technology in anthraquinone method production of hydrogen peroxide
  • Raffinade dewatering technology in anthraquinone method production of hydrogen peroxide

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] see figure 2 , the anthraquinone method of the present invention produces the hydrogen peroxide raffinate dewatering process, and it first sends the raffinate 500 to the filter 100 for filtration through a pump 600 to remove particles in the raffinate; then the filtered raffinate 700 is transported to the horizontal oil-water separation device 200. During the water removal process, there is no need to add lye, and the water-containing raffinate passes through the coalescing filter element in the horizontal oil-water separation device 200, where the small water droplets coalesce into large water droplets. Under the action, the large water droplets will settle down and be initially separated from the raffinate, and the raffinate will further pass through the separation filter element, and under the action of the lipophilic and hydrophobic...

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Abstract

The invention discloses a raffinade dewatering technology in anthraquinone method production of hydrogen peroxide. The technology comprises the following steps: conveying raffinade from an extraction tower to a filter through a pump, filtering to remove particles in the raffinate; allowing the obtained filtrate to go through an oil-water separation device to dewater the filtrate in order to eliminate the destroys of an alkali solution to a carclazyte bed; and regenerating the dewatered raffinate through the clay bed, and circulating to enter a hydrogenation process. The dewatering technology using the oil-water separation device to remove water in the raffinate substitutes traditional alkali solution dewatering technologies, so the destroys of the alkali solution to the carclazyte bed are eliminated, thereby a circulating working fluid cannot be polluted by alkali metal ions, and the content of water not dissolved in the circulating working fluid is reduced reduces to several to dozens of ppm.

Description

technical field [0001] The invention relates to a process for liquid-liquid separation, in particular to a process for removing water from an anthraquinone-based hydrogen peroxide raffinate. Background technique [0002] At present, the anthraquinone process is the most important hydrogen peroxide production process. The working liquid is hydrogenated to obtain a hydrogenated liquid (hydrogenation process), the hydrogenated liquid is oxidized to obtain an oxidized liquid (oxidation process), and the oxidized liquid is extracted with pure water to obtain an extract and an extract. Raffinate (extraction process), raffinate is composed of working fluid, a small amount of water and hydrogen peroxide. Hydrogen peroxide can be dissolved in water in any proportion. When the working fluid containing hydrogen peroxide is recycled, there is a danger of explosion, and the working fluid needs to be dehydrated. , so that the hydrogen peroxide content in the circulating working fluid is ≤...

Claims

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Application Information

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IPC IPC(8): C02F1/40B01D11/04C01B15/023
CPCB01D11/04C01B15/023C02F1/001C02F1/281C02F1/40C02F9/00
Inventor 杨积志李海波汪海瑞刘凯
Owner SHANGHAI ANHORN ENVIRONMENTAL TECH CO LTD
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