Recycling agent for hydrogen peroxide solution

A technology of working fluid and regeneration agent, applied in the direction of peroxide/peroxy hydrate/peroxyacid/superoxide/ozonide, inorganic chemistry, non-metallic elements, etc., which can solve the lack of comprehensive understanding of degraded molecules Mathematical model, active alumina regenerant dust is easy to fall off, increase the burden of post-treatment alkali separation, etc., to achieve the effect of reducing anthraquinone consumption, good hydrogenation environment, and light post-treatment burden

Inactive Publication Date: 2009-10-14
何国炎
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. Regeneration is not complete, 30% of the system degradation product is about 40g/L and cannot be regenerated
Causes high consumption of anthraquinone, system load cannot increase, restricts output
[0004] 2. Activated alumina is easy to pulverize in the alkaline working solution, which increases the burden of post-treatment alkali separation, and is forced to reduce the flow rate, which restricts the output
[0005] 3. The active alumina regenerant has a porous structure and has a strong affinity for aromatics. It can absorb about 30% of the working fluid during use, and more than 6% of the working fluid is wrapped around the w

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A regeneration agent with a CaO content of 1% and a silicon dioxide content of 99% is used.

[0027] The total anthraquinone in the working solution before entering the clay bed is 132g / L, the total degradation products in the working solution are 46g / L, and the surface tension is 20 millinewtons / M.

[0028] Regeneration conditions: working fluid flow rate is 70M 3 / H, the clay bed is filled with 10T of regeneration agent.

[0029] The total anthraquinone was 135g / L, the total degraded product was 43g / L, and the surface tension of the working fluid was 22 millinewtons / M after regeneration with the above-mentioned working fluid regenerant.

Embodiment 2

[0031] A regeneration agent with a CaO content of 30% and a silicon dioxide content of 70% is used.

[0032] The total anthraquinone of the working solution before entering the clay bed is 132g / L, the total degradation product is 46g / L, and the surface tension is 20 millinewtons / M.

[0033] Regeneration conditions: working fluid flow rate is 70M 3 / H, the clay bed is filled with 10T of regeneration agent.

[0034] The total anthraquinone was 140g / L, the total degradation product was 33g / L, and the surface tension was 24 millinewtons / M after being regenerated with the above-mentioned working solution regenerator.

Embodiment 3

[0036] A regeneration agent with a CaO content of 50% and a silica content of 50% was used.

[0037] The total anthraquinone of the working solution before entering the clay bed is 132g / L, the total degradation product is 46g / L, and the surface tension is 20 millinewtons / M.

[0038] Regeneration conditions: working fluid flow rate is 70M 3 / H, the clay bed is filled with 10T of regeneration agent.

[0039] The total anthraquinone at the outlet of the clay bed is 143g / L and the total degradation products are 23g / L after regeneration with the above-mentioned working fluid regenerant. The surface tension is 24 millinewtons / M.

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PUM

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Abstract

The invention discloses a recycling agent for a hydrogen peroxide solution with ideal recycling effect and low cost. The recycling agent adopts calcium oxide as an active component, and has a mixture radio: 1-99 percent of calcium oxide and the balance of alkaline oxide, wherein the optimal mixture ratio is: 50-70 percent of calcium oxide, and the balance of the alkaline oxide. The recycling agent produced by the prescription can achieve higher recycling activity, and makes up the limitation of activated alumina recycling agent from multiple aspects, thereby ensuring that the hydrogen peroxide production achieves a new level.

Description

technical field [0001] The invention relates to a working fluid regeneration agent in the hydrogen peroxide preparation process. Background technique [0002] The production of hydrogen peroxide by palladium catalyst anthraquinone method is to use the working fluid to produce hydrogen peroxide through hydrogenation, oxidation, quenching, post-treatment and other processes. A certain amount of organic macromolecular polymers produced in the process of hydrogenation and oxidation in the working fluid are collectively called degradation products. It wraps organic components such as anthraquinone, TOP, and aromatic hydrocarbons in the working fluid, so that the surface tension of the working fluid decreases, the viscosity increases, the system resistance increases, and the effective ingredients are lost. In the past, activated alumina was used as a regeneration agent to resolve the effective ingredients. Stabilize the resistance of the system and make the whole process run stab...

Claims

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Application Information

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IPC IPC(8): C01B15/023
Inventor 何国炎
Owner 何国炎
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