Recycling agent for hydrogen peroxide solution

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...

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 waste alumina bed when it is unloaded, and its consumption is particularly serious.

[0006] 4. The state of the working fluid using activated alumina as the regenerant is not very ideal. The system often has water and alkali, which seriously affects production

[0007] 5. The dust of activated alumina regeneration agent is easy to fall off, and entering the hydrogenation bed will directly affect the hydrogenation reaction and reduce the hydrogen efficiency.

[0009] At present, there is no comprehensive understanding and exact mathematical model of the molecular structure and regeneration mechanism of degradation products at home and abroad.