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Method for preparing tert-butylamine by taking MTBE as raw material

A technology of tert-butylamine and raw materials, which is applied in the field of preparation of tert-butylamine, can solve the problems of low MTBE conversion rate, strong catalyst corrosion, harsh reaction conditions, etc., and achieve high conversion rate, improved reaction efficiency and conversion rate, and simple process.

Active Publication Date: 2020-05-05
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 by taking MTBE as raw material
  • Method for preparing tert-butylamine by taking MTBE as raw material

Examples

Experimental program
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Effect test

Embodiment 1

[0037] (1) Preparation of solid superacid catalyst: a: 50 grams of ZrOCl 2 Dissolved in ethanol to obtain a mass concentration of 25% ZrOCl 2 ethanol solution, and then 40 g of AlCl 3 dissolved in ZrOCl 2 In the ethanol solution, titrate with 20% ammonia water until there is no white precipitate, wash with deionized water for 5 times, each time for 10 minutes, the washing temperature is 40°C, wash until there is no chloride ion, and then put it in a vacuum at 90°C Dried in a drying oven for 6 hours, extruded and then calcined at 500° C. for 8 hours to obtain white solid particles for use. b: impregnate the white particles obtained in step 1 with a silver nitrate sulfuric acid solution with a concentration of 2mol / L, the impregnation temperature is 55°C, and the impregnation time is 6h; the decompression vacuum degree is 15000Pa; the ultrasonic vibration frequency is 55kHz, and then the solid particles are placed at 90°C Dry it in a vacuum oven for 6 hours under the conditio...

Embodiment 2

[0040] (1) Preparation of solid superacid catalyst: a: 50 grams of ZrOCl 2 Dissolved in ethanol to obtain a mass concentration of 25% ZrOCl 2 ethanol solution, and then 50 g of AlCl 3 dissolved in ZrOCl 2 In the ethanol solution, titrate with 20% ammonia water until there is no white precipitate, wash with deionized water for 5 times, each time for 10 minutes, the washing temperature is 40°C, wash until there is no chloride ion, and then put it in a vacuum at 90°C Dried in a drying oven for 6 hours, extruded and then calcined at 450° C. for 8 hours to obtain white solid particles for use. b: impregnate the white particles obtained in step 1 with a silver nitrate sulfuric acid solution with a concentration of 2mol / L, the impregnation temperature is 55°C, and the impregnation time is 6h; the decompression vacuum degree is 15000Pa; the ultrasonic vibration frequency is 58kHz, and then the solid particles are placed at 90°C Dry it in a vacuum oven for 6 hours under the conditio...

Embodiment 3

[0043] (1) Preparation of solid superacid catalyst: a: 50 grams of ZrOCl 2 Dissolved in ethanol to obtain a mass concentration of 25% ZrOCl 2 ethanol solution, and then 40 g of AlCl 3 dissolved in ZrOCl 2 In the ethanol solution, titrate with 20% ammonia water until there is no white precipitate, wash with deionized water for 5 times, each time for 10 minutes, the washing temperature is 40°C, wash until there is no chloride ion, and then put it in a vacuum at 90°C Dried in a drying oven for 6 hours, extruded and then calcined at 500° C. for 8 hours to obtain white solid particles for use. b: Impregnate the white particles obtained in step 1 with a silver nitrate sulfuric acid solution with a concentration of 3mol / L, the impregnation temperature is 55°C, and the impregnation time is 6h; the decompression vacuum degree is 15000Pa; the ultrasonic vibration frequency is 55kHz, and then the solid particles are placed at 90°C Dry it in a vacuum oven for 6 hours under the conditio...

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Abstract

The invention discloses a method for preparing tert-butylamine by taking MTBE as a raw material. A fixed bed tubular reactor is adopted, a catalyst bed layer is arranged in the middle, a partition plate is arranged on the upper portion in the axial direction, the lower end of the partition plate extends into the catalyst bed layer and incompletely penetrates through the catalyst bed layer, the reactor is divided into three parts, an upper feeding section and a discharging section are arranged on the two sides of the partition plate, and a lower feeding section is arranged below a catalyst filling layer; MTBE and HCN are used as feedstock I and enter from a raw material inlet of the upper feeding section, HCN and nitrogen are used as feedstock II and enter from a raw material inlet of the lower feeding section, the feedstock I is reacted in a catalyst bed layer, a reacted material is mixed with the feedstock II from bottom to top for further reaction, and an obtained product is discharged from a discharge port of the discharging section. According to the reaction mode of the method, the material reaction is more sufficient, the reaction conversion rate is improved, the upper end feeding passes through the catalyst bed layer in a reciprocating manner, the reaction is more sufficient, and the MTBE conversion rate is improved.

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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IPC IPC(8): C07C209/00C07C211/07B01J27/055B01J37/03B01J37/02B01J37/34
CPCC07C209/00B01J27/055B01J37/031B01J37/0201B01J37/343C07C211/07
Inventor 刘野赵亮王岩于庆志党雷
Owner CHINA PETROLEUM & CHEM CORP
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