Method for preparing p-tert-butylphenol by using MTBE as raw material

A technology for p-tert-butylphenol and raw materials, which is applied in the field of preparing p-tert-butylphenol, can solve the problems of low MTBE conversion rate, strong catalyst corrosion, harsh reaction conditions, etc., and achieves high conversion rate, stable catalyst activity, and process flow. simple effect

Active Publication Date: 2020-05-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Aiming at the problems of strong catalyst corrosion, environmental pollution, harsh reaction conditions, and low conversion rate of MTBE in the method for preparing p-tert-butylphenol by using MTBE and phenol as raw materials in the prior art, the present invention provides a method for preparing p-tert-butylphenol Butylphenol method

Method used

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  • Method for preparing p-tert-butylphenol by using MTBE as raw material
  • Method for preparing p-tert-butylphenol by using MTBE as raw material

Examples

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Effect test

Embodiment 1

[0042] (1) Preparation of solid superacid catalyst: a: 50 grams of ZrOCl 2 Dissolved in ethanol to obtain a mass concentration of 30% ZrOCl 2 Ethanol solution, titrated with 20% ammonia water until there is no white precipitate, washed 5 times with deionized water, 10 minutes each time, washing temperature is 40 ° C, washed to no chloride ion, and then placed in vacuum drying at 90 ° C Dry in an oven for 6 hours, extrude and then bake at 500°C for 8 hours to obtain white solid particles for use. b: The obtained white solid particles are packed into a steel mesh bag, laid flat in an ultrasonic vibrator with a thickness of 2 mm, and the silver nitrate sulfuric acid solution and nitrogen with a molar concentration of 3 mol / L and nitrogen are subjected to ultrasonic vibration with an atomizing nozzle. Spray solid particles down, the spray distance is 1.5cm, the spray pressure is 0.08MPa, and the spray time is 2h. After drying and roasting, the particles I are obtained. The drying...

Embodiment 2

[0045] (1) Preparation of solid superacid catalyst: a: 50 grams of ZrOCl 2 Dissolved in ethanol to obtain a mass concentration of 35% ZrOCl 2 Ethanol solution, titrated with 20% ammonia water until there is no white precipitate, washed 5 times with deionized water, 10 minutes each time, washing temperature is 40 ° C, washed to no chloride ion, and then placed in vacuum drying at 90 ° C Dry in an oven for 6 hours, extrude, and then bake at 450°C for 8 hours to obtain white solid particles for use. b: The obtained white solid particles are packed into a wire mesh bag, laid flat in an ultrasonic vibrator with a thickness of 2mm, and the silver nitrate sulfuric acid solution and nitrogen with a molar concentration of 4mol / L and nitrogen are subjected to ultrasonic vibration with an atomizing nozzle Spray solid particles down, the spray distance is 1.5cm, the spray pressure is 0.07MPa, and the spray time is 2h. After drying and roasting, the particles I are obtained. The drying te...

Embodiment 3

[0048] (1) Preparation of solid superacid catalyst: a: 50 grams of ZrOCl 2 Dissolved in ethanol to obtain a mass concentration of 40% ZrOCl 2 Ethanol solution, titrated with 20% ammonia water until there is no white precipitate, washed 5 times with deionized water, 10 minutes each time, washing temperature is 40 ° C, washed to no chloride ion, and then placed in vacuum drying at 90 ° C Dry in an oven for 6 hours, extrude and then bake at 500°C for 8 hours to obtain white solid particles for use. b: Pack the obtained white solid particles into a wire mesh bag, spread them flat in an ultrasonic vibrator with a thickness of 2 mm, and use an atomizing nozzle to mix a silver nitrate sulfuric acid solution with a molar concentration of 2 mol / L and nitrogen under the conditions of ultrasonic vibration Spray solid particles down, the spray distance is 1.5cm, the spray pressure is 0.06MPa, and the spray time is 2h. After drying and roasting, the particles I are obtained. The drying te...

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Abstract

The invention relates to a method for preparing p-tert-butylphenol by using MTBE as a raw material. A fixed bed tubular reactor is adopted, a catalyst bed layer is arranged in the middle, a partitionplate 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, thereactor 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 phenol are used as feedstock I and enter from a raw material inlet of the upper feeding section, MTBE 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, the reacted material is mixed with the feedstock II from bottom to top for further reaction, and a 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 p-tert-butylphenol, especially a method for preparing p-tert-butylphenol by using MTBE (methyl tert-butyl ether) and phenol as raw materials. Background technique [0002] p-tert-butylphenol is also known as 4-tert-butylphenol, or PTBP for short. p-tert-butylphenol is white or off-white flaky solid at room temperature, with a special alkylphenol odor. Soluble in alcohols, esters, alkanes, aromatic hydrocarbons and other organic solvents, such as ethanol, acetone, butyl acetate, gasoline, toluene, etc. Slightly soluble in water, soluble in strong alkali solution. 4-tert-butylphenol has antioxidant properties and can be used as a stabilizer for rubber, soap, chlorinated hydrocarbons and digestive fibers. UV absorber, anti-cracking agent for pesticide, rubber, paint, etc. Stabilizer for polycarbon resin, tert-butylphenolic resin, epoxy resin, polyvinyl chloride, styrene. In addition, it is also a raw ma...

Claims

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Application Information

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IPC IPC(8): C07C39/08C07C37/11B01J27/055
CPCC07C37/11B01J27/055C07C39/08Y02P20/52
Inventor 刘野赵亮王岩于庆志党雷
Owner CHINA PETROLEUM & CHEM CORP
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