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Manufacturing method of phenol and acetone

A manufacturing method and technology of acetone, applied in chemical instruments and methods, preparation of organic compounds, preparation of peroxygen compounds, etc., can solve the problems of demanding reaction equipment, increasing the yield of by-products, high reaction pressure, etc., and meet the reaction conditions Not harsh, lower production cost, lower surface energy effect

Inactive Publication Date: 2019-05-21
实友化工(扬州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But there are following problems: 1, the dilution factor of cumene hydroperoxide is higher, increased the energy consumption of reaction; 2, reaction pressure is big, and reaction equipment is demanding; Thermal reaction, the heat generated is 251.2kJ / mol. If the reactor cannot dissipate heat in time and keep the reaction temperature relatively constant, it will increase the yield of by-products and bring safety hazards

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  • Manufacturing method of phenol and acetone
  • Manufacturing method of phenol and acetone
  • Manufacturing method of phenol and acetone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] refer to figure 1 As shown, the present embodiment provides a kind of manufacture method of phenol and acetone, comprises the following steps:

[0030] S1. Oxidation of cumene: The air pressurized to 0.42MPa is passed through the pressure reducing valve 3 to the bottom of the oxidation tower 1, and the cumene with a pH value of 9.5 prepared by alkali, among the raw materials of cumene, ethylbenzene The content of butylbenzene is less than 0.03%, the content of butylbenzene is less than 0.01%, the content of phenol is less than 3ppm, the content of total sulfur is less than 2ppm, and the content of oxygen is less than 4ppm.

[0031] The cumene is discharged from the liquid storage tank 2, enters into the countercurrent contact with the air through the top of the oxidation tower 1, and reacts at 115°C; during the reaction process of the oxidation tower 1, a gas mixture containing a small amount of oxygen is discharged from the top, and passes through the first condenser 4 ...

Embodiment 2

[0039] refer to figure 1 As shown, the present embodiment provides a kind of manufacture method of phenol and acetone, comprises the following steps:

[0040] S1. Oxidation of cumene: The air pressurized to 0.45MPa is passed through the pressure reducing valve 3 to the bottom of the oxidation tower 1, and the cumene with a pH value of 9.5 prepared by alkali, among the raw materials of cumene, ethylbenzene The content of butylbenzene is less than 0.03%, the content of butylbenzene is less than 0.01%, the content of phenol is less than 3ppm, the content of total sulfur is less than 2ppm, and the content of oxygen is less than 4ppm.

[0041] The cumene is discharged from the liquid storage tank 2, enters into the countercurrent contact with the air through the top of the oxidation tower 1, and reacts at 110°C; during the reaction process of the oxidation tower 1, a gas mixture containing a small amount of oxygen is discharged from the top, and passes through the first condenser 4...

Embodiment 3

[0049] refer to figure 1 As shown, the present embodiment provides a kind of manufacture method of phenol and acetone, comprises the following steps:

[0050] S1. Oxidation of cumene: The air pressurized to 0.5MPa is passed through the pressure reducing valve 3 to the bottom of the oxidation tower 1, and the cumene with a pH value of 10 prepared by alkali, among the raw materials of cumene, ethylbenzene The content of butylbenzene is less than 0.03%, the content of butylbenzene is less than 0.01%, the content of phenol is less than 3ppm, the content of total sulfur is less than 2ppm, and the content of oxygen is less than 4ppm.

[0051] The cumene is discharged from the liquid storage tank 2, enters into the countercurrent contact with the air through the top of the oxidation tower 1, and reacts at 120°C; during the reaction process of the oxidation tower 1, a gas mixture containing a small amount of oxygen is discharged from the top, and passes through the first condenser 4 ...

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Abstract

The invention discloses a manufacturing method for phenol and acetone, and relates to the technical field of chemical raw material synthesis. The manufacturing method comprises the steps that improvement is conducted on the basis of an existing method that phenol and acetone are synthesized through isopropyl benzene oxidation and selective acid catalytic decomposition, isopropyl benzene obtained after alkalization and pressurized air are subjected to a countercurrent contact reaction in an oxidation tower, falling film evaporation and two times of concentration are conducted, and then refinedcumene hydroperoxide is obtained; the refined cumene hydroperoxide is decomposed into the phenol and acetone in a moving bed reactor through catalysis of an acid resin catalyst, and then the refined phenol and acetone are obtained through water washing for deacidification, acetone roughing, acetone refining, coke cutting and secondary dealkylation. The manufacturing method has the good selectivityand yield of the phenol and acetone, the reaction conditions are not harsh and easy to control, the resin catalyst can be reused multiple times after collection and regeneration, and thus the production cost is lowered.

Description

technical field [0001] The invention relates to the technical field of chemical raw material synthesis, in particular to a method for producing phenol and acetone. Background technique [0002] Phenol, commonly known as carbolic acid, is a colorless needle-like or white blocky crystal with aroma. It is an important raw material for the production of dyes, pharmaceutical intermediates, explosives, plastics and other products. It is dissolved in ethanol, ether, chloroform, glycerin, and carbon disulfide. It can be miscible with water in any proportion at ℃. General physical and chemical properties of phenol: melting point 40-42°C, boiling point 182°C, density 1.071g / mL, pH value 3.0-6.0. Acetone is an important organic solvent, and also a raw material for surfactants, drugs, plexiglass, and epoxy resin. It is miscible with water, ethanol, dimethylformamide, chloroform, ether, and most oils. General physical and chemical properties of acetone: melting point -95°C, boiling poi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C37/08C07C39/04C07C45/53C07C49/08B01J31/10C07C407/00C07C409/10
CPCY02P20/52Y02P20/584
Inventor 郑永耀
Owner 实友化工(扬州)有限公司
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