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Preparation method and production device of Guerbet alcohol ether

A Guerbet alcohol and production device technology, which is applied in the field of preparation of Guerbet alcohol ether, can solve the problems of difficult to generate high molecular weight products, long reaction time, increase of by-products, etc., and achieve shortening of reaction residence time, The effect of improving product selectivity and improving reaction efficiency

Pending Publication Date: 2022-03-01
QINGDAO SANLI BENNUO CHEM IND
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are the following disadvantages when using a stirred reactor for reaction: a. The reaction rate is low and the reaction time is long; b. Explosion and static deflagration are prone to occur; c. By-products increase and the product chain growth is small
In addition to the above three reactors, some scholars have also used tubular reactors to prepare alcohol ethers. However, due to the mixing problem of tubular reactors, the addition amount of each reactor is not large, and it is difficult to produce high molecular weight products. And due to the small reaction cross-sectional area, the production capacity is low

Method used

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  • Preparation method and production device of Guerbet alcohol ether
  • Preparation method and production device of Guerbet alcohol ether
  • Preparation method and production device of Guerbet alcohol ether

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preparation example Construction

[0027] The invention provides a kind of preparation method of Guerbet alcohol ether, comprises the steps:

[0028] Mixing Guerbet alcohol, potassium hydroxide and ethylene oxide in a mixer to obtain a mixture;

[0029] Transfer the mixture into a microchannel reactor and react for 0.5 to 1.5 minutes under the conditions of 140°C to 200°C and 1MPa to 6MPa to obtain Guerbet alcohol ether;

[0030] The amount of potassium hydroxide added is 1.0‰~4.0‰ of the total mass of Guerbet alcohol and ethylene oxide.

[0031] In the present invention, Guerbet alcohol, potassium hydroxide and ethylene oxide are mixed in a mixer to obtain a mixture. In the present invention, the Guerbet alcohol is preferably a Guerbet alcohol with 12-18 carbon atoms. In the present invention, the molar ratio of the Guerbet alcohol to ethylene oxide is preferably 1:2˜1:9. In the present invention, the amount of potassium hydroxide added is 1.0‰ to 4.0‰ of the total mass of Guerbet alcohol and ethylene oxide...

Embodiment 1

[0042] Preparation of C12 Guerbet alcohol ethers (EO=2).

[0043] 3‰ of the catalyst was dissolved in C12 Guerbet alcohol (M=188 g / mol). The Guerbet alcohol and the ethylene oxide that dissolves catalyst are beat in the mixer by plunger pump respectively and mix, and the mixture that obtains is passed in the microchannel reactor (setting the temperature of microchannel reactor is 190°C, control the reaction pressure to 3Mpa, and the reaction residence time to 1min).

[0044] Using n-nonanol as an internal standard to measure the content of free alcohol in the product obtained by the reaction, the conversion rate of C12 Guerbet alcohol was 73.2%. The hydroxyl value was measured and the average EO adduct number was calculated to be 2.08.

Embodiment 2

[0046]The preparation product and method are the same as in Example 1, except that the temperature of the microchannel reactor is set at 165°C, the reaction pressure is controlled at 6Mpa, and the residence time of the reaction is 1.5min. Using n-nonanol as an internal standard to measure the content of free alcohol in the product obtained by the reaction, the conversion rate of C12 Guerbet alcohol was 72.76%. The hydroxyl value was measured and the average EO adduct number was calculated to be 2.2.

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Abstract

The invention provides a preparation method and a production device of Guerbet alcohol ether, and belongs to the technical field of preparation of alcohol ether. The preparation method comprises the following steps: mixing Guerbet alcohol, potassium hydroxide and ethylene oxide in a mixer to obtain a mixture; transferring the mixture into a microchannel reactor, and reacting for 0.5-1.5 minutes under the conditions that the temperature is 140-200 DEG C and the pressure is 1-6 MPa, so as to obtain Guerbet alcohol ether; the Guerbet alcohol and the ethylene oxide are reactants, the potassium hydroxide is used as a catalyst, and the addition amount of the potassium hydroxide is 1.0-4.0 per mill of the total mass of the Guerbet alcohol and the ethylene oxide. The Guerbet alcohol ether prepared by the method has the advantages of high production efficiency, high selectivity of the target product and low production cost.

Description

technical field [0001] The invention belongs to the technical field of alcohol ether preparation, and in particular relates to a preparation method of Guerbet alcohol ether and a production device thereof. Background technique [0002] Isomerized fatty alcohol polyoxyethylene ether series products are easy to disperse or dissolve in water, have excellent wettability, permeability and emulsification, and are used as degreasing agents, cleaning agents, emulsifiers and A component of refining agents, it can also be used as a metal processing agent, multifunctional detergent, decontamination solubilizer, household care cleaning agent, vehicle, public facilities, ultrasonic cleaning agent, etc. [0003] In the prior art, a semi-batch gas-liquid ethoxylation reactor is generally used to prepare alcohol ethers. In this type of reactor, raw materials and catalysts are generally added to the reactor together as a starter, and then EO is continuously fed into the reactor. Ethoxylatio...

Claims

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Application Information

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IPC IPC(8): C07C41/03C07C43/11B01F33/80B01J19/00
CPCC07C41/03B01J19/0093B01J2219/00889B01J2219/00873B01J2219/00961B01J2219/00963B01J2219/00984C07C43/11
Inventor 贾振勇王梦玮吴志芳王晓光王科尚遇青
Owner QINGDAO SANLI BENNUO CHEM IND
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