Method for synthesizing acetone condensation compound from acetone and hydrogen

A technology of acetone condensate and acetone, which is applied in chemical instruments and methods, preparation of organic compounds, carbon-based compounds, etc., can solve the problems of undisclosed application of high-gravity reactors, and achieve uniform distribution of reactants and stable system temperature , changing the effect of selectivity

Active Publication Date: 2020-03-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The technologies disclosed in these patent applications all utilize the advantages of high-gravity reactors to enhance mass transfer, and do not disclose the application of high-gravity reactors in the one-step synthesis of acetone condensation products from acetone and hydrogen

Method used

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  • Method for synthesizing acetone condensation compound from acetone and hydrogen
  • Method for synthesizing acetone condensation compound from acetone and hydrogen
  • Method for synthesizing acetone condensation compound from acetone and hydrogen

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Catalyst preparation method: Weigh Co(NO 3 ) 2 ·6H 2 O solid powder 42.91g, weigh Pr(NO 3 ) 3 ·6H 2 O solid powder 11.02g, put into the beaker, add 50g distilled water in the beaker, stir until Co(NO 3 ) 2 ·6H 2 O and Pr(NO 3 ) 3 ·6H 2 O is completely dissolved to obtain a salt solution; use the prepared salt solution to impregnate 100 g of strip-shaped alumina carrier, and adopt one-step impregnation. After the impregnation, drying is carried out under the condition of 100°C; and the catalyst is prepared by calcining under the condition of 420°C. The main active component of the catalyst is cobalt with a mass content of 8%; the auxiliary agent is praseodymium with a mass content of 4%; the carrier is alumina.

[0039] High-gravity rotating bed setup: Put the above-mentioned strip-shaped catalyst into the mesh support inner part, and fix it on the rotor of the high-gravity rotating bed to form a rotatable catalyst bed. The inner diameter (radius) of the bed ...

Embodiment 2

[0053] The same as in Example 1, the only difference is that the high gravity rotating bed is set such that the inner diameter (radius) of the bed is 0.06m, the outer diameter (radius) of the bed is 0.36m, and the bed thickness is 0.3m.

[0054] When the rotating speed of the high gravity rotating bed reactor was 200rpm, 400rpm, 600rpm, 800rpm, 1000rpm respectively, the liquid phase component residence time was calculated according to formula 1, and the liquid phase component flow rate L was 25ml / h. The dwell times are 16.78s, 7.89s, 5.07s, 3.71s, 2.91s respectively.

[0055] When the reaction was carried out for 100 hours, the liquids collected in the first storage tank and the second storage tank for nearly ten minutes were mixed together for analysis. The content of main components in the reaction product is listed in Table 3.

[0056] Table 3 The main components of the product after 100h of reaction

[0057]

[0058]

[0059] When the reaction was carried out for 1...

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Abstract

The invention belongs to the field of chemical engineering, and discloses a method for synthesizing an acetone condensation compound from acetone and hydrogen. The method comprises the following steps: mixing acetone and hydrogen, introducing into a supergravity rotating bed, contacting a catalyst bed layer arranged on the rotor of the supergravity rotating bed, and reacting to obtain a liquid-phase component containing the acetone condensation compound and a gas-phase component, wherein the residence time tau of the liquid-phase component in the catalyst bed layer is less than or equal to 20s. According to the invention, the supergravity rotating bed reactor is introduced into the reaction for one-step synthesis of the acetone condensation compound from acetone and hydrogen, so that theretention time of the liquid-state product in the catalyst bed layer is remarkably shortened, the phenomenon of carbon deposition and coking in the catalyst along with the prolonging of the reaction time is relieved/eliminated, the service life of the catalyst is prolonged, and the conversion rate of reactants and the selectivity of the product are changed.

Description

technical field [0001] The invention belongs to the field of chemical industry, and more specifically relates to a method for synthesizing acetone condensate with acetone and hydrogen, more specifically a method for synthesizing acetone condensate with acetone and hydrogen in one step. Background technique [0002] Methyl isobutyl ketone (MIBK) is an excellent medium-boiling solvent and chemical intermediate, which is widely used in oil refining, medicine, paint, fuel, chemical industry and other fields. As a solvent, methyl isobutyl ketone has the advantages of colorless, transparent, non-toxic, stable performance, good solubility, and can be completely miscible with general organic solvents. It is mostly used in the production of inks, automobiles, video tapes, magnetic tapes and other products. At the same time, methyl isobutyl ketone is also a very important fine chemical raw material, mainly used in the production of rubber antioxidant 4020 substances, 4-methyl-2-pentan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C45/73C07C49/04
CPCC07C45/73C07C49/04Y02P20/10
Inventor 向良玉唐国旗田保亮宋超李宝芹
Owner CHINA PETROLEUM & CHEM CORP
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