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Method for synthesizing high-carbon aldehyde by using microchannel reaction device

A technology of micro-channel reaction and micro-channel reactor, applied in the fields of carbon monoxide reaction preparation, organic chemistry, etc., can solve the problems of low reaction efficiency, high energy consumption of catalyst separation cycle, easy decomposition and mass transfer capacity, etc.

Pending Publication Date: 2021-09-10
上海簇睿低碳能源技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problems to be solved by the present invention are: the high energy consumption of the catalyst separation cycle in the current homogeneous hydroformylation process of high carbon olefins, easy decomposition and the mass transfer in the water-oil two-phase hydroformylation process of high carbon olefins Poor ability, low response efficiency, etc.

Method used

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  • Method for synthesizing high-carbon aldehyde by using microchannel reaction device
  • Method for synthesizing high-carbon aldehyde by using microchannel reaction device
  • Method for synthesizing high-carbon aldehyde by using microchannel reaction device

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Embodiment 1

[0028] Dicarbonyl acetylacetonate rhodium, water-soluble phosphine ligand L1 and deionized water are configured into a catalyst solution, wherein the concentration of dicarbonyl acetylacetonate rhodium in water is 100ppm, and the mol ratio of dicarbonyl acetylacetonate rhodium to water-soluble phosphine ligand L1 The ratio is 1:100, the catalyst solution, synthesis gas and n-dodecene are passed into the microchannel mixer 4 simultaneously, and the ratio of n-dodecene and rhodium in the catalyst solution is controlled by the catalyst solution feed pump 1 and the higher carbon olefin feed pump 2. The molar ratio is 5000:1, and the molar ratio of syngas to n-dodecene is controlled to be 2:1 by the gas flow meter 3 and the high-carbon olefin feed pump 2, and the gas-liquid mixture is sent to the microchannel reactor 5 after mixing , at a reaction temperature of 100°C and a reaction pressure of 1 MPa, the reaction was carried out with a residence time of 60s. The obtained product e...

Embodiment 2

[0031] Dicarbonyl acetylacetonate rhodium, water-soluble phosphine ligand L2 and deionized water are configured into a catalyst solution, wherein the concentration of dicarbonyl acetylacetonate rhodium in water is 100ppm, and the mol ratio of dicarbonyl acetylacetonate rhodium to water-soluble phosphine ligand L2 The ratio is 1:100, the catalyst solution, synthesis gas and n-dodecene are passed into the microchannel mixer 4 simultaneously, and the ratio of n-dodecene and rhodium in the catalyst solution is controlled by the catalyst solution feed pump 1 and the higher carbon olefin feed pump 2. The molar ratio is 5000:1, and the molar ratio of syngas to n-dodecene is controlled to be 2:1 by the gas flow meter 3 and the high-carbon olefin feed pump 2, and the gas-liquid mixture is sent to the microchannel reactor 5 after mixing , at a reaction temperature of 100°C and a reaction pressure of 1 MPa, the reaction was carried out with a residence time of 60s. The obtained product e...

Embodiment 3

[0034] Dicarbonyl acetylacetonate rhodium, water-soluble phosphine ligand L3 and deionized water are configured into a catalyst solution, wherein the concentration of dicarbonyl acetylacetonate rhodium in water is 100ppm, and the mol ratio of dicarbonyl acetylacetonate rhodium to water-soluble phosphine ligand L3 The ratio is 1:100, the catalyst solution, synthesis gas and n-dodecene are passed into the microchannel mixer 4 simultaneously, and the ratio of n-dodecene and rhodium in the catalyst solution is controlled by the catalyst solution feed pump 1 and the higher carbon olefin feed pump 2. The molar ratio is 5000:1, and the molar ratio of syngas to n-dodecene is controlled to be 2:1 by the gas flow meter 3 and the high-carbon olefin feed pump 2, and the gas-liquid mixture is sent to the microchannel reactor 5 after mixing , at a reaction temperature of 100°C and a reaction pressure of 1 MPa, the reaction was carried out with a residence time of 60s. The obtained product e...

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Abstract

The invention discloses a method for synthesizing high-carbon aldehyde by a microchannel reaction device. The method is characterized by comprising the following steps: dissolving a rhodium catalyst and a water-soluble organic phosphine ligand in water to prepare a catalyst solution; simultaneously pumping high-carbon olefin, synthesis gas and a catalyst solution into a micro-channel mixer, and mixing; then feeding the mixed solution into a micro-channel reactor, and carrying out a reaction; and cooling the obtained reaction product, feeding into a three-phase separation tank, and separating to obtain an oil phase, namely the high-carbon aldehyde. According to the invention, a water-oil two-phase hydroformylation method is adopted, a water-phase catalyst and an oil-phase product are easy to separate, and the defects that the catalyst is difficult to separate in homogeneous catalysis, the catalyst is easy to inactivate in the separation process and the like are overcome; and the micro-channel continuous flow reaction device can realize continuous circulation of a catalyst solution and synthesis gas, and realizes zero discharge of gas and liquid.

Description

technical field [0001] The invention relates to a method for synthesizing high carbon aldehyde through a microchannel reaction device, belonging to the technical field of organic chemical industry. Background technique [0002] The hydroformylation reaction of olefins is an important process for the production of high value-added chemicals such as aldehydes / alcohols, and the world's annual output has exceeded 10 million tons. Its products aldehydes, alcohols and their derivatives are widely used in the fields of plasticizers, surfactants, lubricating oils and fragrances. [0003] At present, the hydroformylation process is mainly divided into two types: homogeneous catalysis and two-phase catalysis. Homogeneous catalysis uses an oil-soluble catalyst for the catalytic reaction, which has the advantages of high catalytic activity and good selectivity, but the product and the catalyst need to be separated by flash evaporation, which is only suitable for the hydroformylation re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C45/50C07C47/02
CPCC07C45/50C07C47/02
Inventor 孙予罕王慧王栋梁刘晓放宋文越马春辉袁湘琦
Owner 上海簇睿低碳能源技术有限公司
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