Method for extracting 3-hydroxypropionic acid

A technology of hydroxypropionic acid and organic solvent, which is applied in the field of extracting 3-hydroxypropionic acid, can solve the problems of cumbersome production process, low product yield and high energy consumption of 3-hydroxypropionic acid, achieve short process route, high purity, The effect of high yield

Inactive Publication Date: 2017-11-17
ANHUI BBCA FERMENTATION TECH ENG RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Therefore, in view of the current 3-hydroxypropionic acid production process complex, low product yield and high energy consumption, it is urgent to propose a more economical and effective method for preparing 3-hydroxypropionic acid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Get 150g of 30% (mass percentage) 3-hydroxypropionic acid solution, 450g of organic solvents (wherein trioctyl ammonium 182g, octachar alcohol 45g, kerosene 223g) are put in the there-necked flask, carry out vacuum concentration at 80 ℃, be concentrated to no longer After condensed water came out, an organic solvent containing 3-hydroxypropionic acid was obtained.

[0033] Transfer the organic solvent containing 3-hydroxypropionic acid to another three-necked flask, add water and mix with the organic solvent containing 3-hydroxypropionic acid at 90°C, then separate the organic solvent to obtain a solution containing 3-hydroxypropionic acid.

[0034] After calculation, the yield of 3-hydroxypropionic acid was 92.5%.

[0035] After testing, the isolated solution containing 3-hydroxypropionic acid has a purity of 99%.

Embodiment 2

[0037] Take 200g of 30% (mass percentage) 3-hydroxypropionic acid solution and 395g of organic solvent trioctylammonium in a three-necked flask, and carry out vacuum concentration at 80°C until no more condensed water comes out. The organic solvent of propionic acid was transferred to a distillation flask. Distillation was carried out at 150° C. under a vacuum of 5 mmHg to obtain 3-hydroxypropionic acid.

[0038] After calculation, the yield of 3-hydroxypropionic acid was 99%.

[0039] After testing, the purity of 3-hydroxypropionic acid in the separated 3-hydroxypropionic acid is 99.5%.

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Abstract

The invention relates to the field of chemical engineering, and concretely discloses a method for extracting 3-hydroxypropionic acid. The method comprises the following steps: an aqueous solution containing 3-hydroxypropionic acid is mixed with an organic solvent, evaporative concentration is carried out to removing the moisture in the aqueous solution containing 3-hydroxypropionic acid, so that the 3-hydroxypropionic acid molecules can be better introduced into an organic phase, the organic phase containing 3-hydroxypropionic acid is obtained, less inorganic salt and other organic impurity are introduced into the organic phase, so that the separation of 3-hydroxypropionic acid and other impurity in the aqueous solution is realized. The 3-hydroxypropionic acid introduced into the organic phase can obtain the pure 3-hydroxypropionic acid, 3-hydracrylate, a 3-hydroxypropionic acid polymer or other 3-hydroxypropionic acid products by a plurality of traditional methods known by technical staff in this industry. The method for extracting 3-hydroxypropionic acid has the advantages of short technical route and convenient operation, and the purity of the 3-hydroxypropionic acid is high. The yield of the 3-hydroxypropionic acid product is high, the environmental pollution is little, and a complex operation process of the traditional 3-hydroxypropionic acid production technology can be avoided.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a method for extracting 3-hydroxypropionic acid. Background technique [0002] 3-hydroxypropionic acid (3-HP for short), with a molecular formula of C3H6O3 and a molecular weight of 90.08, is a non-chiral organic acid with three carbon atoms. The acid dissociation constant (pKa) is 4.5, in the form of Liquid, viscous, colorless and odorless, soluble in water, ethanol, ether. It can be used in the synthesis of various chemicals such as acrylic acid. 3-HP and lactic acid are isomers, but the chemical nature of 3-HP is more active. 3-HP oxidation, hydrogenation, dehydration, esterification, etc. can convert it into a variety of important chemical substances, such as acrylic acid, 1,3-propanediol, malonic acid, poly 3-HP, etc. 3-HP can also be used as Additives and preservatives for food or feed. The production methods of 3-HP currently include chemical methods and microbial ferm...

Claims

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Application Information

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IPC IPC(8): C07C51/42C07C51/44C07C51/48C07C59/01
CPCC07C51/42C07C51/44C07C51/48C07C59/01
Inventor李荣杰尚海涛潘声龙
OwnerANHUI BBCA FERMENTATION TECH ENG RES