Method for preparing tert-butylamine

A tert-butylamine and reactor technology, applied in the field of preparing tert-butylamine, can solve the problems of low MTBE conversion rate, strong catalyst corrosion, harsh reaction conditions, etc., and achieve the effects of high conversion rate, improved reaction conversion rate, and sufficient reaction.

Active Publication Date: 2021-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the prior art, MTBE and HCN are used as raw materials to prepare tert-butylamine in the method that the catalyst is highly corrosive, pollutes the environment, the reaction conditions are harsh, and the conversion rate of MTBE is relatively low problem, the invention provides a method for preparing tert-butylamine

Method used

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  • Method for preparing tert-butylamine
  • Method for preparing tert-butylamine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Preparation of inorganic membrane catalyst: (1) Dissolving 250 grams of zirconium n-butoxide in 250 mL of ethanol to prepare ethanol solution of zirconium n-butoxide; (2) Adding the solution obtained in step (1) dropwise with an aqueous nitric acid solution with a molar concentration of 6 mol / L zirconium n-butoxide ethanol solution to obtain a transparent sol, then add 5g of polyvinyl alcohol and 4g of polyethylene glycol respectively, continue to stir, and further obtain a sol with a certain viscosity, the stirring temperature is 40°C, and the stirring speed is 200r / min; (3) Add α-Al 2 o 3 Immerse the ceramic tube vertically into the sol obtained in step b for 2 minutes, pull it out at a pulling speed of 15cm / min, and then heat-treat it at 100°C for 10 minutes, repeat the above steps of immersion, pulling and heat treatment 3 times , and then roasted at 1000°C for 4 hours; (4) impregnate the ceramic tube obtained in step (3) with a concentration of 4mol / L silver nitra...

Embodiment 2

[0037] Preparation of inorganic membrane catalyst: (1) Dissolving 250 grams of zirconium n-butoxide in 250 mL of ethanol to prepare ethanol solution of zirconium n-butoxide; (2) Adding the solution obtained in step (1) dropwise with an aqueous nitric acid solution with a molar concentration of 6 mol / L zirconium n-butoxide ethanol solution to obtain a transparent sol, then add 5g of polyvinyl alcohol and 5g of polyethylene glycol respectively, continue to stir, and further obtain a sol with a certain viscosity, the stirring temperature is 40°C, and the stirring speed is 200r / min; (3) Add α-Al 2 o 3 Immerse the ceramic tube vertically into the sol obtained in step b for 1 minute, pull it out at a pulling speed of 10 cm / min, and then heat-treat it at 100°C for 10 minutes, repeat the above steps of dipping, pulling and heat treatment 4 times , and then roasted at 1000°C for 4 hours; (4) impregnate the ceramic tube obtained in step (3) with a concentration of 3mol / L silver nitrate...

Embodiment 3

[0040] Preparation of inorganic membrane catalyst: (1) Dissolving 250 grams of zirconium n-butoxide in 250 mL of ethanol to prepare ethanol solution of zirconium n-butoxide; (2) Adding the solution obtained in step (1) dropwise with an aqueous nitric acid solution with a molar concentration of 6 mol / L zirconium n-butoxide ethanol solution to obtain a transparent sol, then add 4g of polyvinyl alcohol and 4g of polyethylene glycol respectively, continue to stir, and further obtain a sol with a certain viscosity, the stirring temperature is 40°C, and the stirring speed is 200r / min; (3) Add α-Al 2 o 3 Immerse the ceramic tube vertically into the sol obtained in step b for 2 minutes, pull it out at a pulling speed of 10 cm / min, and then heat-treat it at 100°C for 10 minutes, repeat the above steps of dipping, pulling and heat treatment 5 times , and then roasted at 1000°C for 4 hours; (4) impregnate the ceramic tube obtained in step (3) with a concentration of 4mol / L silver nitrat...

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Abstract

The invention relates to a method for preparing tert-butylamine, which comprises the following steps: adopting a tubular reactor, arranging a ceramic tube with an inorganic catalytic membrane attached on the surface in the middle of the reactor, respectively arranging a feed port and a discharge port on two sides of a top partition plate, arranging another feed port at the bottom of the reactor, feeding MTBE and HCN from the top, feeding HCN and nitrogen from the bottom, reacting on the inorganic catalytic membrane, and discharging from the discharge port. The inorganic catalytic membrane is prepared by taking a ZrO2 membrane as a carrier for loading an active component. The reaction is carried out on the inorganic catalytic membrane reactor, mass transfer can be enhanced, diffusion in the holes can be eliminated, the mass transfer in the membrane holes depends on pressure flow convection, further improvement of the reaction rate is facilitated, and the reaction conversion rate is improved by adopting an upper and lower simultaneous feeding mode. The inorganic membrane catalyst has uniform particle size, and SO4<2-> is rapidly and uniformly coordinated with metal ions on the surface of the oxide, so that the catalyst has relatively strong acidity and relatively high activity and stability.

Description

technical field [0001] The invention relates to a method for preparing tert-butylamine, especially a method for preparing tert-butylamine by using MTBE (methyl tert-butyl ether) and HCN (hydrocyanic acid) as raw materials. Background technique [0002] Tert-Butylamine is a colorless, flammable liquid, miscible with water and ethanol. It is mainly used as an intermediate in organic synthesis such as rubber additives, insecticides, fungicides, dyes, and medicines. In recent years, with the enhancement of global environmental protection awareness and the improvement of environmental protection requirements in various countries, many green and environmentally friendly chemical product production technologies and production processes have emerged, and the subsequent product technology development and application of tert-butylamine have also been further developed. Such as the synthesis of Folipine, the synthesis of desulfurization and decarburization agent hindered amine and Ⅳ-t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C209/00C07C211/07B01J27/053B01J27/055B01J37/02B01J37/34B01J37/08B01J19/24
CPCC07C209/00B01J27/053B01J27/055B01J37/0201B01J37/343B01J37/082B01J35/065B01J19/2415C07C211/07Y02P20/584
Inventor 刘野赵亮王岩于庆志党雷
Owner CHINA PETROLEUM & CHEM CORP
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