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A kind of preparation method of bisphenol F

A phenol and feed technology, applied in the field of bisphenol F preparation, can solve the problems of short catalyst life, many side reactions, difficult reaction, etc., to increase the probability of contact and mass transfer efficiency, improve the reaction efficiency and conversion rate, improve the The effect of conversion rate

Active Publication Date: 2022-03-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] CN104326878A discloses a method for catalytically synthesizing bisphenol F with nitric acid and phosphoric acid. This method uses nitric acid and phosphoric acid as catalysts, and uses an organic solvent to participate in the synthesis reaction. There are problems of corrosion, pollution and difficult separation
CN102584541A discloses a method for preparing bisphenol F with 1-alkyl-3-methylimidazole acidic ionic liquid. The method uses an ionic liquid catalyst. Although there are no problems such as corrosion and pollution, the catalyst needs to be recycled and energy consumption is high. Higher, and the catalyst life is short, and the product yield in the later stage of use is low
JP11269113 discloses a method for synthesizing bisphenol F using zeolite molecular sieves as a catalyst; CN 101987812A discloses a method for synthesizing bisphenol F using mesoporous molecular sieves as a catalyst. This type of method product separation and catalyst recovery are relatively easy, but the phenol-formaldehyde ratio and The reaction temperature is high, the reaction is difficult to control, and there are many side reactions

Method used

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  • A kind of preparation method of bisphenol F
  • A kind of preparation method of bisphenol F

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Preparation of modified ion exchange resin catalyst: a: Wash 150 grams of styrene-based strongly acidic cation exchange resin with deionized water for 5 times, each time for 10 minutes, and dry it in a vacuum oven at 90°C for 4 hours; b: Put the dried strongly acidic cation exchange resin into a 2mm thick steel mesh bag, lay it flat on an ultrasonic vibrator with a vibration frequency of 59kHz, spray phosphotungstic acid aqueous solution with a mass percentage of 40% and nitrogen with an atomizing nozzle Immerse for 2 hours, the spray distance is 1cm, and the spray pressure is 0.05MPa; c: After washing, put it in a vacuum oven for 6 hours at 90°C, and bake the dried ion exchange resin at 210°C for 8 hours; d: Then put The resin is treated with 20% phosphotungstic acid aqueous solution according to the method of b, after washing, it is dried in a vacuum oven at 80°C for 6 hours, and the dried ion exchange resin is calcined at 200°C for 8 hours to obtain the supported ...

Embodiment 2

[0035] 1. Preparation of modified ion exchange resin catalyst: a: Wash 150 grams of styrene-based strongly acidic cation exchange resin with deionized water for 5 times, each time for 10 minutes, and dry it in a vacuum oven at 90°C for 6 hours; b: Put the dried strongly acidic cation exchange resin into a steel mesh bag with a thickness of 3mm, lay it flat in an ultrasonic vibrator with a vibration frequency of 58kHz, spray phosphotungstic acid aqueous solution with a mass percentage of 35% and nitrogen with an atomizing nozzle Immerse for 2 hours, the spray distance is 2cm, and the spray pressure is 0.07MPa; c: After washing, put it in a vacuum oven for 6 hours at 90°C, and bake the dried ion exchange resin at 210°C for 8 hours; d: Then put The resin is treated with 20% phosphotungstic acid aqueous solution according to the method of b, after washing, it is dried in a vacuum oven at 80°C for 6 hours, and the dried ion exchange resin is calcined at 200°C for 8 hours to obtain t...

Embodiment 3

[0038] 1. Preparation of modified ion exchange resin catalyst: a: Wash 150 grams of styrene-based strongly acidic cation exchange resin with deionized water for 5 times, each time for 10 minutes, and dry it in a vacuum oven at 90°C for 6 hours; b: Put the dried strongly acidic cation exchange resin into a steel mesh bag with a thickness of 3 mm, lay it flat on an ultrasonic vibrator with a vibration frequency of 57 kHz, spray phosphotungstic acid aqueous solution with a mass percentage of 45% and nitrogen with an atomizing nozzle Immerse for 2 hours, spray distance 2cm, spray pressure 0.06MPa; c: After washing, dry in a vacuum oven at 90°C for 6 hours, and bake the dried ion exchange resin at 210°C for 8 hours; d: Then put The resin is then treated with 15% phosphotungstic acid aqueous solution according to the method b, after washing, it is dried in a vacuum oven at 80°C for 6 hours, and the dried ion exchange resin is calcined at 200°C for 8 hours to obtain the supported het...

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Abstract

The invention discloses a preparation method of bisphenol F, which comprises the following contents: a fixed bed tubular reactor is divided into three parts by installing partitions along the axial direction, and the two sides of the partition are an upper feeding section and a discharging section , below the partition is the lower feeding section; phenol aqueous solution and formaldehyde aqueous solution enter the reactor as feed I from the raw material inlet of the upper feeding section, and phenol aqueous solution and nitrogen enter the reactor as feed II from the raw material inlet of the lower feeding section , the feed I undergoes condensation reaction in the catalyst bed in the middle of the reactor, and the reacted material is mixed with the bottom-up feed II for further reaction. The reaction product is discharged from the discharge port of the discharge section, and then separated, After purification, bisphenol F is obtained. The method uses phenol and formaldehyde as raw materials, the reactor adopts a fixed-bed tubular reactor with a partition in the middle, and the feeding method adopts the feeding method of upper and lower feeding at the same time. The method of the invention has simple flow, high efficiency, mild conditions, stable catalyst activity and long-term operation.

Description

technical field [0001] The invention relates to a method for preparing bisphenol F, in particular to a method for preparing bisphenol F by using phenol and formaldehyde as raw materials. Background technique [0002] Bisphenol F, also known as bis-(hydroxyphenyl)methane, molecular formula C13H12O2, melting point 160 ° C, ultraviolet light can cause discoloration, it is a white leaf-shaped crystal. It is a monomer for synthetic materials, mainly used in the synthesis of epoxy resins, and can also be used in the synthesis of polycarbonate resins, polyester resins and phenolic resins, flame retardants, antioxidants and surfactants. Epoxy resin is the matrix material of high-performance composite materials. It has various types and excellent performance. It has good adhesion, insulation, chemical stability and thermal stability. It is easy to cure and has a wide range of uses. At present, common epoxy resins mainly include glycidyl ether resins—bisphenol A epoxy resins. As a m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C37/20C07C39/16B01J31/34B01J31/18B01J37/02B01J37/34
CPCC07C37/20B01J31/34B01J37/0201B01J37/343C07C39/16Y02P20/52
Inventor 刘野霍稳周吕清林李花伊
Owner CHINA PETROLEUM & CHEM CORP
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