Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Working solution, preparation method thereof and application of working solution in production of hydrogen peroxide by anthraquinone method

A working fluid, hydrogen peroxide technology, applied in chemical instruments and methods, peroxide/peroxyhydrate/peroxyacid/superoxide/ozone, inorganic chemistry, etc., can solve the problem of increasing the production cost of hydrogen peroxide, working fluid Problems such as large workload and high price of tetrabutyl urea can improve hydrogenation efficiency, improve solubility, and increase density difference.

Pending Publication Date: 2022-07-05
SHANDONG HUALU HENGSHENG CHEM IND
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The prior art discloses a process using heavy aromatics, trioctyl phosphate and 2-methylcyclohexyl acetate as a solvent system. This solvent system has a high solubility to hydroanthraquinone and improves the hydrogenation efficiency, but the work High liquid density, not conducive to extraction
The prior art discloses a process using heavy aromatic hydrocarbons, trioctyl phosphate and tetrabutyl urea as a solvent system. The working fluid density of this solvent system is moderate, the solubility to hydroanthraquinone is large, and the boiling point of the solvent is high, but four Butylurea is expensive and the market is in short supply
There is also prior art that discloses a process using heavy aromatics, trioctyl phosphate and N-phenyl N-ethylbenzamide as a solvent system. The working fluid of this solvent system has a large workload and reduces the anthraquinone degradation rate , but the synthesis process of N-phenyl N-ethylbenzamide is complicated, and the purification is difficult, which increases the production cost of hydrogen peroxide

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Working solution, preparation method thereof and application of working solution in production of hydrogen peroxide by anthraquinone method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Heavy aromatic hydrocarbon: trioctyl phosphate: 2-methylcyclohexyl acetate: 2-octanol=78:12:8:2 (volume ratio) is used as the working liquid solvent system. The heavy aromatics are composed of C10 aromatics (including tetramethylbenzene, meta-tetramethylbenzene, mesitylene, methylpropylbenzene, butylbenzene, diethylbenzene, methylindene and naphthalene, wherein the aromatic hydrocarbon mass fraction is greater than 99%, Purchased from Nanjing Covent Chemical Co., Ltd.), the flash point is 74°C, and the density is 0.8898g / cm 3 . Working carrier: The sum of the solubility of 2-ethylanthraquinone and tetrahydro-2-ethylanthraquinone is 177 g / L. The temperature of the hydrogenation reaction is 45℃, the reaction pressure is 0.25MPa, and the working fluid space velocity is 10h -1 , the volume flow ratio of working fluid and hydrogen is 1:6.67 (standard state). The oxidation reaction temperature was 50°C, and the reaction pressure was 0.2 MPa. The extraction reaction temper...

Embodiment 2

[0058] Using heavy aromatic hydrocarbons: trioctyl phosphate: 2-methylcyclohexyl acetate: 2-octanol=70:15:11:4 (volume ratio) as the working liquid solvent system, and others are the same as in Example 1. Working carrier: The solubility of 2-ethylanthraquinone and tetrahydro-2-ethylanthraquinone is 169 g / L. Working fluid airspeed is 11h -1 , the volume flow ratio of working fluid and hydrogen is 1:6.36 (standard state). The measured hydrogen efficiency is 9.65g / L, the density of the working solution is 0.907g / ml, the hydrogen peroxide content in the raffinate is 0.12g / L, and the total organic carbon content (TOC ) was 248ppm.

Embodiment 3

[0060] Using heavy aromatic hydrocarbons: trioctyl phosphate: 2-methylcyclohexyl acetate: 2-octanol=66:13:16:5 (volume ratio) as the working liquid solvent system. Others are the same as in Example 1. Working carrier: The solubility of 2-ethylanthraquinone and tetrahydro-2-ethylanthraquinone is 165g / L. Working fluid airspeed is 9h -1 , the volume flow ratio of working fluid and hydrogen is 1:6.21 (standard state). The measured hydrogen efficiency was 9.43g / L, the density of the working solution was 0.908g / ml when measured at 45°C, the hydrogen peroxide content in the raffinate was 0.1g / L, and the amount of hydrogen peroxide in the extract (the crude product of hydrogen peroxide) was The total organic carbon content (TOC) was 252 ppm.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
densityaaaaaaaaaa
flash pointaaaaaaaaaa
Login to View More

Abstract

The invention provides a working solution, a preparation method thereof and an application of the working solution in production of hydrogen peroxide by an anthraquinone process. The working solution comprises the following components in percentage by volume: 55-85% of heavy aromatics; 5%-20% of trioctyl phosphate; 5%-25% of 2-methyl cyclohexyl acetate; and 1%-8% of 2-octanol. The solvent system disclosed by the invention is formed by compounding the four-component solvent, so that the solubility of the 2-ethyl anthraquinone and the tetrahydro-2-ethyl anthraquinone is increased, and the hydrogenation efficiency is improved; the density of the working solution is lower than that of an existing solvent system, the density difference between the working solution and water is increased, extraction operation is facilitated, the content of hydrogen peroxide in raffinate is reduced, and the concentration of hydrogen peroxide in a product is increased; meanwhile, decomposition and hydrolysis of trioctyl phosphate and 2-methylcyclohexyl acetate are effectively inhibited, the total organic carbon content in the product is reduced, and the method has a wide application prospect in hydrogen peroxide production.

Description

Technical field [0001] The invention belongs to the technical field of hydrogen peroxide production, and specifically relates to a working fluid and its preparation method and its application in the production of hydrogen peroxide by the anthraquinone method. Background technique [0002] Hydrogen peroxide is an important chemical product. Due to its almost pollution-free properties during use, it is called the "cleanest" chemical product. Hydrogen peroxide is mainly used to prepare disinfectants, bleaches, deoxidants, polymer initiators, cross-linking agents and other products, and is widely used in papermaking, textiles, medicine, chemical industry, environmental protection and other industries. In recent years, with the continuous expansion of hydrogen peroxide in its application market, the demand for hydrogen peroxide in the chemical industry has been increasing. [0003] At present, the main production methods of hydrogen peroxide include anthraquinone method, direct ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C01B15/023
CPCC01B15/023
Inventor 常怀春宋望一薛玲康永清
Owner SHANDONG HUALU HENGSHENG CHEM IND
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com