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System and method for preparing isononanoic acid and method for preparing metal organic skeletal catalyst

A metal-organic framework, isononanoic acid technology, applied in the preparation of organic compounds, organic compound/hydride/coordination complex catalysts, organic chemistry, etc., can solve the unsolved safety problem of local accumulation of peroxides in the rectification process , There are no reports of the decomposition of peroxide heterogeneous catalysts, and the metal ions are not easy to separate, so as to avoid excessive heat release rate, improve product selectivity, and fast decomposition rate.

Active Publication Date: 2018-05-18
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] In summary, in the prior art of preparing corresponding carboxylic acids by oxidation of aldehydes, metal ion catalysts are generally added to the oxidation reactor to speed up the reaction and accelerate the decomposition of peroxides, but this will lead to a decrease in selectivity and an increase in by-products. The product yield is low, and the metal ions are not easy to separate
In the prior art, there is no report on heterogeneous catalysts for decomposing peroxides in the process of aldehyde oxidation to acid production, and the safety problems caused by the local accumulation of peroxides in the rectification process have not been solved in the prior art

Method used

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  • System and method for preparing isononanoic acid and method for preparing metal organic skeletal catalyst
  • System and method for preparing isononanoic acid and method for preparing metal organic skeletal catalyst
  • System and method for preparing isononanoic acid and method for preparing metal organic skeletal catalyst

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Embodiment 1-8

[0092] The isononanal 1 is passed into the bubble column reactor to carry out the oxidation reaction, and the oxidant is air; the isononanal 1 is obtained after the oxidation reaction in the oxidation reactor A and the total flow is divided into a decomposition flow 3 and a recycle flow 2;

[0093] The decomposition stream 3 is decomposed through catalytic decomposition in the peroxide decomposition reactor D, and the catalyst in the peroxide decomposition reactor D is the catalyst prepared above. Obtain isononanoic acid 7, light components 6 and high boilers 8 after the peroxide decomposition reactor D outlet flow 5 is processed through the conventional rectification unit E rectification tower;

[0094] The recycle stream 2 is cooled in the heat exchanger of the cooling device B, and then the excessive metal ions such as iron in the recycle stream 2 are separated in the metal ion separation device C, so as to avoid the accumulation of metal ions in the stream after the materia...

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Abstract

The invention provides a system and method for preparing isononanoic acid and a method for preparing a metal organic skeletal catalyst. The system includes an oxidation reactor used for oxidizing isononylaldehyde to isononanoic acid; a cooler used for cooling a part of material flow that flows out of the oxidation reactor; a metal ion separator used for separating excessive metal ions from the material flow that flows out of the cooler; a peroxide decomposition reactor used for decomposing a peroxide in the other part of the material flow that flows out of the oxidation reactor; and a rectification apparatus used for separating the material flow that flows out of the peroxide decomposition reactor to obtain the isononanoic acid product, wherein the material outlet of the metal ion separator is connected to the material inlet of the oxidation reactor. The invention further provides an isononanoic acid preparation method that is good in selectivity and safety and high in yield.

Description

technical field [0001] The invention relates to a system and method for preparing isononanoic acid and a method for preparing a metal-organic framework catalyst, belonging to the technical field of chemical raw material preparation. Background technique [0002] Isononanoic acid (3,5,5-trimethylhexanoic acid), its structure is as follows: [0003] [0004] It has a wide range of uses and can be used as raw materials for synthetic lubricants, pharmaceutical intermediates, metal soaps and metal processing fluids. It is also suitable for modification of alkyd resins, which can improve yellowing resistance and impact resistance. It can also be used to produce various Isononanoate can be used in the field of cosmetics, and its metal salt can be used for different purposes such as paint drier, vinyl stabilizer, polyvinyl chloride stabilizer and preservative, tire adhesion aid, etc. [0005] Aldehyde oxidation to prepare isononanoic acid is the main production process at presen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C51/285C07C51/42C07C51/44C07C53/126B01J31/12C08G83/00
CPCC07C51/285C07C51/42C07C51/44C08G83/008B01J31/123B01J2231/70C07C53/126C07C51/235
Inventor 刘振峰袁帅王中华董龙跃黄少峰吕艳红姜庆梅黎源
Owner WANHUA CHEM GRP CO LTD
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