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Process and device for continuously producing high-quality N-fatty acyl amino acid salt surfactant

A fatty acyl amino acid and surfactant technology, applied in the field of daily chemical industry, can solve problems such as residue, product quality, application impact, etc., and achieve the effect of reducing the formation of fatty acid sodium and inhibiting invalid decomposition

Pending Publication Date: 2018-05-08
ZANYU TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the reaction conversion rate and the yield of N-fatty acyl amino acid surfactants, organic solvents such as methanol, tert-butanol, and glycerol need to be added in the process production; Inevitably, there are still some residues, which have a certain impact on the quality and application of the product

Method used

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  • Process and device for continuously producing high-quality N-fatty acyl amino acid salt surfactant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment 1: the mass concentration is 20% amino acid mixture aqueous solution (wherein the mass ratio of alanine and lysine is 100:8), lauroyl chloride, mass concentration are 20% liquid caustic soda respectively enter mixing device and mix homogeneously, wherein The feed rate of amino acid mixture aqueous solution is 108kg / h, the feed rate of lauroyl chloride is 40kg / h, the flow rate of liquid caustic soda is automatically adjusted according to the pH meter reading, and the pH is controlled at 9.5 ± 0.2; the speed of circulating reaction materials is 1000kg / h; After being cooled by the cooler, it is transported to the amidation column by the delivery pump for amidation reaction. The reaction temperature is controlled at 20°C, and the residence time of the reaction material in the amidation column is 5h; the reacted product enters the aging kettle at a rate of 200kg / h , control the aging temperature to 60°C, and the aging time to 6h; the rest of the reacted products en...

Embodiment 2

[0051] Embodiment 2: mass concentration is 25% amino acid mixture aqueous solution (wherein the mass ratio of alanine and lysine is 100:10), cocoyl chloride, mass concentration are that 15% liquid caustic soda enters mixing device respectively and mixes evenly, Wherein the feed rate of the amino acid mixture aqueous solution is 50kg / h, the feed rate of the acid chloride is 36kg / h, the flow rate of the liquid caustic soda is automatically adjusted according to the pH meter reading, and the pH is controlled at 10.0 ± 0.2; the speed of the circulating reaction material is 1000kg / h; After being cooled by the cooler, it is transported to the amidation column by the delivery pump for amidation reaction, the reaction temperature is controlled at 18°C, and the residence time of the reaction material in the amidation column is 6h; the reacted product enters the aging kettle at a rate of 160kg / h , the aging temperature is controlled to be 70°C, and the aging time is 4h; the rest of the r...

Embodiment 3

[0052] Embodiment 3: the aqueous solution of amino acid mixture that mass concentration is 15% (wherein the mass ratio of alanine and arginine is 100:2), lauroyl chloride, mass concentration is that 32% liquid caustic soda enters mixing device respectively and mixes evenly, wherein The feed rate of the amino acid mixture aqueous solution is 152kg / h, the feed rate of the acid chloride is 50kg / h, the flow of liquid caustic soda is automatically adjusted according to the pH meter reading, and the pH is controlled at 10.5 ± 0.2; the speed of the circulating reaction material is 1000kg / h; After the cooler cools down, use the transfer pump to transport it to the amidation column for amidation reaction. The reaction temperature is controlled at 15°C. The residence time of the reaction material in the amidation column is 4h; the reacted product enters the aging kettle at 250kg / h. The aging temperature is controlled at 50°C, and the aging time is 8 hours; the rest of the reacted product...

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Abstract

The invention belongs to the field of chemical engineering, and aims to provide a process and a device for continuously producing a high-quality N-fatty acyl amino acid salt surfactant, which increasean acyl chloride conversion rate and reduces the content of sodium aliphatate. According to the technical scheme adopted by the invention, the process for continuously producing the high-quality N-fatty acyl amino acid salt surfactant comprises the following steps: (1) separately introducing a reaction material amino acid mixture, acyl chloride, liquid alkaline and circulating recycling materialsinto a mixing device to uniformly mix; (2) cooling the uniformly mixed materials through a heat exchanger, conveying the materials into an amidation post with an overflow hole from the bottom by utilizing a conveying pump, and performing amidation reaction at a proper temperature with a proper pH value; (3) enabling an amidation product to overflow from the overflow hole of the amidation post, introducing one part of the amidation product used as the circulating recycling materials into the mixing device to perform circulating reaction, and heating the other part of the amidation product through a heater, and introducing the heated materials into an ageing machine to perform ageing reaction; and (4) obtaining an aged reaction product, namely a target product N-fatty acyl amino acid salt.

Description

technical field [0001] The invention belongs to the technical field of daily chemical industry, in particular to a process and a device for continuously producing high-quality N-fatty acylamino acid salt surfactants. Background technique [0002] Surfactants have attracted much attention and application in many fields due to their unique application properties. However, most of the surfactants currently belong to petroleum-based sources, which have been criticized due to the non-renewability of raw materials, low chemical safety and refractory degradation. . [0003] With the continuous development of industrial technology, new surfactants have come out one after another, amino acid surfactant is one of them. Due to the natural and renewable raw materials, and its own advantages such as excellent surface activity, good calcium soap dispersibility, excellent antibacterial effect, high safety, low irritation, easy biodegradation and good environmental compatibility, amino aci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C231/02C07C233/47C07C277/08C07C279/14
CPCC07C231/02C07C277/08C07C233/47C07C279/14
Inventor 方银军徐坤华葛赞王晓辉华文高
Owner ZANYU TECH GRP CO LTD
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