Stredford process peroxyl production work liquid post treatment method

A technology for hydrogen peroxide and hydrogen peroxide extraction, applied in chemical instruments and methods, peroxide/peroxyhydrate/peroxyacid/superoxide/ozonide, inorganic chemistry, etc., can solve the problem of reducing active oxidation Problems such as the service life of the aluminum regeneration bed, loss of regeneration degradation products and dissolved degradation products, incomplete separation of lye and working fluid, etc., to achieve remarkable regeneration effect, stable strength and activity, and good working conditions

Inactive Publication Date: 2004-03-24
中国石油化工股份有限公司巴陵分公司
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Problems solved by technology

[0005] After potassium carbonate is used for a period of time, a large amount of degradation products are enriched, and the content of organic impurities gradually increases. Although the concentration of the solution becomes thinner after absorbing water, the concentration of the solution is solved by evaporation and concentration. However, due to the high boiling point of organic impurities, the enrichment It is impossible to remove the degraded products. After the lye that has not removed the degraded impurities is returned to the alkali tower, because the degraded products tend to be saturated, it loses or partially loses the function of regenerating and dissolving the degraded products, and gradually loses the treatment effect of the working liquid. If it is replaced with fresh lye, it will cause loss of raw materials
The lye is not continuously fed and discharged in the alkali tower, which makes the water concentration gradient of the lye smaller and af

Method used

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  • Stredford process peroxyl production work liquid post treatment method

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Embodiment 1

[0011] Embodiment 1: (see figure 1 ) 40% (wt%) concentration, the sodium nitrate lye of PH=11.3 enters from alkali tower 1 top, and flow rate is 9L / h. The working liquid enters from the bottom of the alkali tower 1, and the working liquid contains 10% to 13% (wt%) 2-ethylanthraquinone and a mixture of 5, 6, 7, 8-tetrahydro 2-ethylanthraquinone, and the solvent is 75 % (v%) aromatics and 25% trioctyl phosphate, the moisture content of the working fluid is 0.25% to 0.52%, the content of degradation products is 4.8% to 5.5%, and the flow rate is 150L / h. The treatment temperature in the alkali tower is 50°C, and the pressure is normal pressure. The diluted lye flows out from the bottom of the tower, and the flow rate is 12L / h. According to the above operating conditions, after the working fluid is treated by the alkali tower, the moisture content in the working fluid is 0.1-0.15%, the degradation product content is 1.5-2.2%, and the sodium ion content of the crude hydrogen perox...

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Abstract

A process for handling the extraction raffinate of anthraquinone hydrogen peroxide is neutralizing the acidic extraction raffinate with concentrated basic sodium nitrate solution for decomposing the contained hydrogen peroxide, absorbing a part of water to suit to the regeneration of active aluminium oxide, and regenerating a part of degradation matter existed in the extract raffinate to suit to the hydrogenaton .

Description

technical field [0001] The invention relates to a method for producing hydrogen peroxide, in particular to a post-treatment method for producing hydrogen peroxide by an anthraquinone method. Background technique [0002] The anthraquinone method to produce hydrogen peroxide is to use alkylanthraquinone and its tetrahydro derivatives, such as 2-ethylanthraquinone, 2-amylanthraquinone, 2-butylanthraquinone, 2-methylanthraquinone, 2 , 3-dimethylanthraquinone, etc. and their 5, 6, 7, 8-tetrahydro derivatives, 2-ethylanthraquinone and 5, 6, 7, 8-tetrahydro 2-ethylanthraquinone are preferred In a specific solvent system, the solvent is composed of aromatic hydrocarbons, alkanes, cycloalkanes, aromatic hydrocarbons are preferred, and trioctyl phosphate, triethyl phosphate, methylcyclohexyl acetate, and trioctyl phosphate is the preferred binary solvent to form a working fluid. The working fluid is alternately hydrogenated and oxidized. In the hydrogenation process, 2-ethylanthraq...

Claims

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Application Information

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IPC IPC(8): C01B15/023
Inventor 陈四海张坤林凌太平蔡志伟冯礼义李学梦洪洁龚凌
Owner 中国石油化工股份有限公司巴陵分公司
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