Automatic strengthening system and process for preparing hydrogen peroxide based on anthraquinone method

Abstract

The invention relates to an automatic strengthening system and process for preparing hydrogen peroxide based on an anthraquinone method. The automatic strengthening system comprises a raw material supply unit, a reaction unit, a separation unit, a micro-interface generator and an automatic control unit. According to the invention, the micro-interface generator is arranged in the reaction unit, hydrogen and air are crushed into micron-sized small bubbles in the micro-interface generator, and the micro-bubbles have additional pressure and are not easy to coalesce with each other when colliding with each other, so that the hydrogen has a larger phase interface area compared with hydrogen before being crushed, therefore, the hydrogen microbubbles can be more easily mixed with an anthraquinonederivative-containing working solution to form a gas-liquid emulsion, and the air bubbles can be more easily mixed with a 2-ethylanthraquinone-containing hydrogenated solution to form a gas-liquid emulsion, thereby achieving the effect of enhancing mass transfer within a lower preset operation condition range, and increasing the yield of hydrogenation reaction and oxidation reaction.

Description

technical field

[0001] The invention relates to the technical field of anthraquinone preparation of hydrogen peroxide, in particular to an automatic strengthening system and process for preparing hydrogen peroxide based on an anthraquinone method. Background technique

[0002] Hydrogen peroxide is an important inorganic peroxide, an important petrochemical raw material and fine chemical product. It can be used in fabrics, pulp decolorization, chemical synthesis, wastewater treatment, medical treatment, metallurgy, military industry, food processing and other fields. It has oxidizing, It has the characteristics of bleaching and environmental protection during use, and acts as an oxidizing agent, bleaching agent, disinfectant, polymer initiator, crosslinking agent, propellant, etc. The production methods of hydrogen peroxide include anthraquinone method, electrolysis method, isopropanol oxidation method, inorganic reaction method, direct synthesis method of hydrogen and oxygen...

Examples

Embodiment 1

[0107] Use above-mentioned system and process to carry out anthraquinone method to prepare hydrogen peroxide, wherein:

[0108] Hydrogenation reaction: In the process, a palladium catalyst is added to the hydrogenation tower, and an anthraquinone derivative-containing working solution composed of 2-ethylanthraquinone (EAQ), heavy aromatics (AR) and trioctyl phosphate is introduced, wherein EAQ The concentration is 110g / L, the reaction temperature is 35°C, the reaction pressure is 0.10MPa, and the gas-liquid ratio in the micro-interface generator is 400:1.

[0109] Oxidation reaction: The reaction temperature in the hydrogenation tower in the process is 38°C, the reaction pressure is 0.15MPa, and the gas-liquid ratio in the micro-interface generator is 600:1.

Embodiment 2

[0111] Use above-mentioned system and process to carry out anthraquinone method to prepare hydrogen peroxide, wherein:

[0112] Hydrogenation reaction: In the process, a palladium catalyst is added to the hydrogenation tower, and an anthraquinone derivative-containing working solution composed of 2-ethylanthraquinone (EAQ), heavy aromatics (AR) and trioctyl phosphate is introduced, wherein EAQ The concentration is 120g / L, the reaction temperature is 37°C, the reaction pressure is 0.13MPa, and the gas-liquid ratio in the micro-interface generator is 500:1.

[0113] Oxidation reaction: In the process, the reaction temperature in the hydrogenation tower is 40°C, the reaction pressure is 0.17MPa, and the gas-liquid ratio in the micro-interface generator is 700:1.

Embodiment 3

[0115] Use above-mentioned system and process to carry out anthraquinone method to prepare hydrogen peroxide, wherein:

[0116] Hydrogenation reaction: In the process, a palladium catalyst is added to the hydrogenation tower, and an anthraquinone derivative-containing working solution composed of 2-ethylanthraquinone (EAQ), heavy aromatics (AR) and trioctyl phosphate is introduced, wherein EAQ The concentration is 125g / L, the reaction temperature is 39°C, the reaction pressure is 0.14MPa, and the gas-liquid ratio in the micro-interface generator is 600:1.

[0117] Oxidation reaction: In the process, the reaction temperature in the hydrogenation tower is 42°C, the reaction pressure is 0.19MPa, and the gas-liquid ratio in the micro-interface generator is 750:1.

technical field

[0001] The invention relates to the technical field of anthraquinone preparation of hydrogen peroxide, in particular to an automatic strengthening system and process for preparing hydrogen peroxide based on an anthraquinone method. Background technique

[0002] Hydrogen peroxide is an important inorganic peroxide, an important petrochemical raw material and fine chemical product. It can be used in fabrics, pulp decolorization, chemical synthesis, wastewater treatment, medical treatment, metallurgy, military industry, food processing and other fields. It has oxidizing, It has the characteristics of bleaching and environmental protection during use, and acts as an oxidizing agent, bleaching agent, disinfectant, polymer initiator, crosslinking agent, propellant, etc. The production methods of hydrogen peroxide include anthraquinone method, electrolysis method, isopropanol oxidation method, inorganic reaction method, direct synthesis method of hydrogen and oxygen...

Examples

Embodiment 1

[0107] Use above-mentioned system and process to carry out anthraquinone method to prepare hydrogen peroxide, wherein:

[0108] Hydrogenation reaction: In the process, a palladium catalyst is added to the hydrogenation tower, and an anthraquinone derivative-containing working solution composed of 2-ethylanthraquinone (EAQ), heavy aromatics (AR) and trioctyl phosphate is introduced, wherein EAQ The concentration is 110g / L, the reaction temperature is 35°C, the reaction pressure is 0.10MPa, and the gas-liquid ratio in the micro-interface generator is 400:1.

[0109] Oxidation reaction: The reaction temperature in the hydrogenation tower in the process is 38°C, the reaction pressure is 0.15MPa, and the gas-liquid ratio in the micro-interface generator is 600:1.

Embodiment 2

[0111] Use above-mentioned system and process to carry out anthraquinone method to prepare hydrogen peroxide, wherein:

[0112] Hydrogenation reaction: In the process, a palladium catalyst is added to the hydrogenation tower, and an anthraquinone derivative-containing working solution composed of 2-ethylanthraquinone (EAQ), heavy aromatics (AR) and trioctyl phosphate is introduced, wherein EAQ The concentration is 120g / L, the reaction temperature is 37°C, the reaction pressure is 0.13MPa, and the gas-liquid ratio in the micro-interface generator is 500:1.

[0113] Oxidation reaction: In the process, the reaction temperature in the hydrogenation tower is 40°C, the reaction pressure is 0.17MPa, and the gas-liquid ratio in the micro-interface generator is 700:1.

Embodiment 3

[0115] Use above-mentioned system and process to carry out anthraquinone method to prepare hydrogen peroxide, wherein:

[0116] Hydrogenation reaction: In the process, a palladium catalyst is added to the hydrogenation tower, and an anthraquinone derivative-containing working solution composed of 2-ethylanthraquinone (EAQ), heavy aromatics (AR) and trioctyl phosphate is introduced, wherein EAQ The concentration is 125g / L, the reaction temperature is 39°C, the reaction pressure is 0.14MPa, and the gas-liquid ratio in the micro-interface generator is 600:1.

[0117] Oxidation reaction: In the process, the reaction temperature in the hydrogenation tower is 42°C, the reaction pressure is 0.19MPa, and the gas-liquid ratio in the micro-interface generator is 750:1.

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