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Preparing process for mixed solvent of hydrogen peroxide operating fluid by anthraquinone method

A technology of hydrogen peroxide and mixed solvents, applied in the fields of peroxide/peroxyhydrate/peroxyacid/superoxide/ozonide, inorganic chemistry, chemical instruments and methods, etc.

Inactive Publication Date: 2005-02-23
LIMING RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mixed uniformly by general mixing method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Preparation of mixed solvents: Mix the three solvents uniformly at the volume ratio of AR:TOP:TBU=75:20:5.

[0014] Preparation of working solution: use the mixed solvent to prepare 2-ethylanthraquinone into a solution with a mass concentration of 120 g / L.

[0015] Hydrogenation and oxidation test: The above-mentioned working fluid is operated in the whole process on the model test device of Liming Chemical Research Institute, and the flow rate of the working fluid is 25-30L / h. The catalyst used in the hydrogenation process is a spherical palladium catalyst (APC-Q-1 type) produced by Liming Research Institute of Chemical Industry, and the loading amount of the palladium catalyst in the hydrogenation tower is 1050g. Keep the hydrogenation pressure at 0.10-0.35Mpa, the hydrogenation temperature at 35-75°C, the oxidation pressure at 0.2-0.35MPa, and the oxidation temperature at 35-55°C. The hydrogen peroxide content in the raffinate is less than 0.25g / L. After 512 hours ...

Embodiment 2

[0017] The volume ratio of the mixed solvent is AR:TOP:TBU=75:10:15, the average hydrogen peroxide production capacity is 1550kg / (kgPd·d), the average product concentration is 379g / L, and the maximum product concentration is 392g / L. Others are implemented in the same way example 1.

Embodiment 3

[0019] The volume ratio of the mixed solvent is AR:TOP:TBU=75:5:20, the average hydrogen peroxide production capacity is 1680kg / (kgPd·d), the average product concentration is 393g / L, and the maximum product concentration is 405g / L. Others are implemented in the same way example 1.

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PUM

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Abstract

The invention relates to a preparing process for mixed solvent of hydrogen peroxide operating fluid by anthraquinone method, and the mixed solvent is comprised by aromatic hydrocarbon, trioctyl phosphate, tetrabutyl urea. The volume percent ratios of each components are: 70% to 80% aromatic hydrocarbon, 5% to 25% trioctyl phosphate, 5% to 25% tetrabutyl urea. The operating fluid made up by the three-component solvent is used in the hydrogen peroxide preparing process by anthraquinone method, and comparing with traditional two-component solvent made up by aromatic hydrocarbon-trioctyl phosphate, the invention has larger producing capacity of peroxide, and the product thereof has higher concentration.

Description

technical field [0001] The invention relates to a process for preparing hydrogen peroxide by anthraquinone method, and further relates to a solvent for working liquid. Background technique [0002] The anthracene mixed method to produce hydrogen peroxide is to dissolve anthraquinone or anthraquinone derivatives in a suitable solvent to form a working fluid, and the working fluid is alternately hydrogenated and oxidized to generate hydrogen peroxide. The production process is divided into several main processes such as hydrogenation, oxidation, extraction and purification, and post-treatment. [0003] At present, most of the solvents used to prepare the working fluid in the production of hydrogen peroxide by anthraquinone method are binary solvents composed of aromatic hydrocarbon (AR)-trioctyl phosphate (TOP). The disadvantages of this two-component solvent system are: the working liquid prepared with this mixed solvent dissolves more hydrogen peroxide during the circulatio...

Claims

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Application Information

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IPC IPC(8): C01B15/022C01B15/023
Inventor 寇志豪郭菊荣王丽丽胡长诚
Owner LIMING RES INST OF CHEM IND
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