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Technology for continuously producing alkyl amide propyl group betaine

An alkylamidopropyl sugar beet and process technology, which is applied in the field of continuous production technology of amphoteric surfactants, can solve the problems that the product quality is difficult to maintain stable, the production efficiency is difficult to be further improved, and the energy consumption is high, and the utilization rate of equipment is improved. , Conducive to the expansion of production capacity and the effect of improving production efficiency

Active Publication Date: 2011-07-27
ZANYU TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantages of the above process are: due to the intermittent production mode, it is difficult to maintain stable product quality, and it is difficult to further improve production efficiency; and the energy consumption is relatively high

Method used

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  • Technology for continuously producing alkyl amide propyl group betaine
  • Technology for continuously producing alkyl amide propyl group betaine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: take coconut oil as raw material continuous production cocamidopropyl betaine

[0022] Cocoic acid 220kg / h, N, N-dimethylaminopropylamine 173kg / h enters in the static mixer, through 52 ℃ of first heat exchanger mixed materials temperature, then further be warming up to 108 ℃ by the second heat exchanger, then Enter the condensation reactor, heat up to 162°C (at normal pressure) through a jacket oil bath (jacket oil bath temperature 170°C), and after staying in the reactor for 3h, enter the vacuum flasher (pressure 0.03MPa) at 350kg / h, After deamination, the material is cooled to 93°C by the second heat exchanger and then enters the quaternization reactor. After reacting at 95°C for 2 hours, it is cooled to 52°C by the first heat exchanger and enters the adjustment tank for adjustment to obtain the finished product. Under the conditions of the present embodiment, the production capacity of cocamidopropyl betaine is 1100kg / h.

Embodiment 2

[0023] Embodiment 2: Methyl dodecanoate is continuous production of lauryl amidopropyl betaine as raw material

[0024] Methyl dodecanoate 320kg / h, N, N-dimethylaminopropylamine 150kg / h enters in the static mixer, passes through the first heat exchanger and mixes material temperature 58 ℃, further heats up to 97 ℃ after passing through the second heat exchanger ℃, then enter the condensation reactor, and heat up to 155°C (at normal pressure) through a jacket oil bath (jacket oil bath temperature 160°C). After staying in the reactor for 2h, enter the vacuum flasher at 370kg / h (pressure 0.01 MPa), the material after deamination is cooled to 87°C by the second heat exchanger, then enters the quaternization reactor, reacts at 90°C for 2 hours, enters the first heat exchanger to cool to 60°C, enters the adjustment tank for adjustment, and obtains the finished product . Under the conditions of the present embodiment, the production capacity of cocamidopropyl betaine is 2000kg / h.

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Abstract

The invention relates to a production technology of surfactant, aiming at realizing the continuous production of alkyl amide propyl group betaine, so as to ensure product quality, and improve production efficiency and energy utilization rate. The technical scheme is that the technology for continuously producing alkyl amide propyl group betaine is realized by the following steps: 1. fatty acid or fatty acid ester and N, N-dimethylamino group propylamine are uniformly mixed and heated, then enter a condensation reactor for reaction, and then enter a rectifying tower for fractionation, and N, N-dimethylamino group propylamine returns back to the reactor to continue to participate in reaction; the product enters a vacuum flash evaporator, and the removed N, N-dimethylamino group propylamine enters the rectifying tower again for fractionation; alkyl amide tertiary amine after deamination is mixed with material output by a first heat exchanger and treated with temperature reduction and then enters a quaterisation reactor; and 2. chloroacetic acid and caustic soda liquid are measured and neutralized and then enter the quaterisation reactor to react with alkyl amide tertiary amine, the product and material produced from a static mixer are adjusted, and then the product of alkyl amide propyl group betaine is obtained.

Description

technical field [0001] The invention relates to a continuous production process of amphoteric surfactants; in particular, a continuous production process of alkyl amidopropyl betaine type surfactants. Background technique [0002] Amphoteric surfactants refer to surfactants composed of anion and cation, which exhibit the properties of anionic or cationic surfactants due to the different pH values ​​of the medium; alkylamidopropyl betaine is an industrialized product of amphoteric surfactants main category in . Alkyl amidopropyl dimethyl betaine (CAB) not only has excellent washing foaming, thickening, hard water resistance, conditioning, antibacterial and biodegradability, but also has good affinity with the skin, and is good for the skin, It is less irritating to the eyes and more mild in performance. Since it was developed in the 1960s, it has been widely used in cosmetics and personal products that come into contact with human skin, especially in infant washing and prote...

Claims

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Application Information

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IPC IPC(8): C07C233/36C07C231/12B01F17/22C09K23/22
CPCY02P20/10
Inventor 夏雄燕黄亚茹雷小英史立文
Owner ZANYU TECH GRP CO LTD