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A kind of method for preparing sec-butanol

A sec-butanol and catalyst bed technology, which is applied in the field of preparing sec-butanol, can solve the problems of complex process, low conversion rate of raw materials, harsh reaction conditions, etc., and achieve the effect of sufficient reaction, improved conversion rate and high conversion rate

Active Publication Date: 2022-06-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems in the prior art of using sec-butyl acetate as a raw material to produce sec-butanol that the process is complex, or the reaction conditions are harsh, and the conversion rate of raw materials is low, the invention provides a method for preparing sec-butanol

Method used

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  • A kind of method for preparing sec-butanol

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Preparation of modified ion exchange resin catalyst: a: Wash 150 grams of styrene-based strong acid cation exchange resin with deionized water for 5 times, 10 minutes each time, and dry it in a vacuum drying box at 90°C for 4 hours; b : Put the dried strong acid cation exchange resin into a steel mesh bag with a thickness of 2 mm, lay it flat in an ultrasonic vibrator, the vibration frequency is 57 kHz, and the mass percentage of 35% phosphotungstic acid aqueous solution and nitrogen are sprayed with an atomizing nozzle. Spray immersion for 2 hours, spray distance 1cm, spray pressure 0.05MPa; c: After washing, put it in a vacuum drying oven at 90°C for 6 hours, and bake the dried ion exchange resin at 210°C for 8 hours; d: Then The resin was then treated with 15% phosphotungstic acid aqueous solution according to the method of b, washed and dried in a vacuum drying oven at 80 °C for 6 hours, and the dried ion exchange resin was calcined at 200 °C for 8 hours to obtai...

Embodiment 2

[0036] (1) Preparation of modified ion exchange resin catalyst: a: Wash 150 grams of styrene-based strong acid cation exchange resin with deionized water for 5 times, 10 minutes each time, and dry it in a vacuum drying box at 90°C for 6 hours; b : Put the dried strong acid cation exchange resin into a steel mesh bag with a thickness of 3 mm, lay it flat in an ultrasonic vibrator, and the vibration frequency is 59 kHz. Spray immersion for 2 hours, spray distance 2cm, spray pressure 0.07MPa; c: After washing, put it in a vacuum drying oven at 90°C for 6 hours, and bake the dried ion exchange resin at 220°C for 8 hours; d: Then The resin was then treated with 20% phosphotungstic acid aqueous solution according to the method of b, washed and dried in a vacuum drying oven at 80 ° C for 6 hours, and the dried ion exchange resin was calcined at 200 ° C for 8 hours to obtain the load. type heteropolyacid catalyst.

[0037] (2) The reaction was carried out in a fixed-bed continuous re...

Embodiment 3

[0039] (1) Preparation of modified ion exchange resin catalyst: a: Wash 150 grams of styrene-based strong acid cation exchange resin with deionized water for 5 times, 10 minutes each time, and dry it in a vacuum drying box at 90°C for 6 hours; b : Put the dried strong acid cation exchange resin into a steel mesh bag with a thickness of 3 mm, lay it flat in an ultrasonic vibrator, and the vibration frequency is 59 kHz. Spray dipping for 2 hours, spray distance 2cm, spray pressure 0.06MPa; c: After washing, put it in a vacuum drying oven at 90°C for 6 hours, and bake the dried ion exchange resin at 220°C for 8 hours; d: Then The resin was then treated with 20% phosphotungstic acid aqueous solution according to the method of b, washed and dried in a vacuum drying oven at 80 ° C for 6 hours, and the dried ion exchange resin was calcined at 200 ° C for 8 hours to obtain the load. type heteropolyacid catalyst.

[0040] (2) The reaction was carried out in a fixed-bed continuous reac...

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Abstract

A method for preparing sec-butanol, using a fixed-bed tubular reactor, the middle part is a catalyst bed, the upper part is provided with a partition along the axial direction, the lower end of the partition extends into the catalyst bed, and does not completely penetrate the catalyst bed, and the reaction The device is divided into three parts, the upper feed section and the discharge section are on both sides of the partition, and the lower feed section is below the catalyst packing layer; sec-butyl acetate and water enter from the raw material inlet of the upper feed section as feed I. , water and nitrogen enter as feed II from the raw material inlet of the lower feed section, and feed I undergoes a hydrolysis reaction in the catalyst bed, and the reacted material is mixed with feed II from bottom to top for further reaction, and the product comes out The discharge port of the material section is discharged. The reaction mode of the above method makes the material react more fully, improves the conversion rate of the hydrolysis reaction, and feeds the material at the upper end to reciprocate through the catalyst bed, so that the reaction is more sufficient, and the conversion rate of the sec-butyl acetate is improved.

Description

technical field [0001] The invention relates to a method for preparing sec-butanol, especially a method for preparing sec-butanol by using sec-butyl acetate and water as raw materials. Background technique [0002] Sec-butanol, also known as 2-butanol, is a colorless, scented liquid with a boiling point of 99.5 °C. It is mainly used for the production of methyl ethyl ketone, and its consumption accounts for about 90% of the total consumption of sec-butanol. It can also be used to produce plasticizers, surfactants, wetting agents, herbicides, etc., and can also be used as solvents, material dispersants, dehydration paint strippers, extractants, etc. Therefore, it has high application value in industry. In addition, with the shortage of petroleum resources, it is an inevitable trend of future development to use blended gasoline instead of gasoline as a driving fuel for vehicles. Sec-butanol gasoline can greatly reduce the cost and situation of raw materials without the need ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C31/12C07C29/09B01J31/08B01J8/16
CPCB01J8/008B01J8/16C07C29/095B01J31/08B01J2208/00929C07C31/12
Inventor 刘野霍稳周吕清林李花伊
Owner CHINA PETROLEUM & CHEM CORP
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