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Organic extraction phase for extracting lactic acid from heavy phase lactic acid

An extraction phase and lactic acid technology, applied in organic chemistry, separation/purification of carboxylic acid compounds, etc., can solve the problems of small dosage, difficulty in sales, and restrictions on the production scale of lactic acid finishing, so as to achieve rational utilization of resources and solve constraints. Effect

Active Publication Date: 2012-09-12
河南金丹乳酸科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The use of heavy phase lactic acid is narrow, and the dosage is small, so it is difficult to sell in the market
Even if traditional methods are used to reprocess the heavy phase lactic acid to produce lactic acid, there will still be 5-8% of the lactic acid in the heavy phase lactic acid that cannot be extracted and utilized; moreover, the cost of reprocessing the heavy phase lactic acid to produce lactic acid is higher than that of lactic acid The sales price is not worth the loss
This also indirectly causes the price of refined lactic acid to be expensive, and at the same time restricts the production scale of refined lactic acid

Method used

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  • Organic extraction phase for extracting lactic acid from heavy phase lactic acid
  • Organic extraction phase for extracting lactic acid from heavy phase lactic acid
  • Organic extraction phase for extracting lactic acid from heavy phase lactic acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In this example, the organic extraction phase for extracting lactic acid from the heavy phase lactic acid is composed of an extractant, a solvent and a phase regulator; the mass ratio of the extractant, solvent and phase regulator is 5.5:2.5:0.5. The extraction agent is an amide compound, the solvent is liquid paraffin, and the phase regulator is an alcohol compound.

[0022] Amide compounds have the structure shown in the following formula (I):

[0023]

[0024] where R1 is CH 3 (CH 2 ) 3 -, R2 is hydrogen, R3 is CH 3 (CH 2 ) 3 -.

[0025] Alcohol compounds have a structure shown in the following formula (II):

[0026]

[0027] Wherein R4 is hydrogen, R5 is hydrogen, R6 is CH 3 CH 2 -.

[0028] In this example, the organic extract phase and the heavy phase lactic acid (75% lactic acid mass fraction) were thoroughly mixed according to a mass ratio of 1:1, and allowed to stand for separation; the lactic acid mass fraction in the aqueous phase was 0.9%. T...

Embodiment 2

[0030] In this embodiment, the organic extract phase for extracting lactic acid from heavy phase lactic acid is composed of extractant, solvent and phase regulator; the mass ratio of extractant, solvent and phase regulator is 6.5:3.5:1. The extraction agent is an amide compound, the solvent is liquid paraffin, and the phase regulator is an alcohol compound.

[0031] Amide compounds have the structure shown in the following formula (I):

[0032]

[0033] where R1 is (CH 2 ) 5 CH-, R2 is hydrogen, R3 is CH 3 (CH 2 ) 7 -.

[0034] Alcohol compounds have a structure shown in the following formula (II):

[0035]

[0036] Wherein R4 is hydrogen, R5 is hydrogen, R6 is CH 3 (CH 2 ) 5 -.

[0037] In this example, the organic extract phase and the heavy phase lactic acid (78% lactic acid mass fraction) were thoroughly mixed according to a mass ratio of 1:1, and allowed to stand for separation; the lactic acid mass fraction in the aqueous phase was 0.8%. The obtained loa...

Embodiment 3

[0039] In this embodiment, the organic extract phase for extracting lactic acid from heavy phase lactic acid is composed of extractant, solvent and phase regulator; the mass ratio of extractant, solvent and phase regulator is 6:3:0.8. The extraction agent is an amide compound, the solvent is liquid paraffin, and the phase regulator is an alcohol compound.

[0040] Amide compounds have the structure shown in the following formula (I):

[0041]

[0042] where R1 is CH 3 (CH 2 ) 9 -, R2 is hydrogen, R3 is CH 3 (CH 2 ) 6 -.

[0043] Alcohol compounds have a structure shown in the following formula (II):

[0044]

[0045] Wherein R4 is hydrogen, R5 is hydrogen, R6 is CH 3 CH 2 -.

[0046] In this example, the organic extract phase and the heavy phase lactic acid (80% lactic acid mass fraction) were thoroughly mixed according to a mass ratio of 1:1, and allowed to stand for separation; the lactic acid mass fraction in the aqueous phase was 1%. The obtained loaded or...

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Abstract

The invention discloses an organic extraction phase for extracting a lactic acid from a heavy phase lactic acid, comprising an extracting agent, a solvent, and a phase regulator. The organic extraction phase provided by the invention can extract over 99% of the lactic acid in the heavy phase lactic acid into an organic phase, so that a refined lactic acid or lactate can be produced by using the heavy phase lactic acid with a simple process route and low production cost.

Description

technical field [0001] The present invention relates to an organic extraction phase used in extraction, in particular to an organic extraction phase for extracting lactic acid from heavy phase lactic acid. Background technique [0002] As a food additive and chemical raw material, lactic acid is widely used in more and more fields, especially the market gap for refined lactic acid is large (for example, the production of lactic acid salts, esters and polylactic acid requires refined lactic acid as raw material). However, during the refining process of lactic acid, heavy phase lactic acid with 15% of the total mass of raw materials will be produced (heavy phase lactic acid: it is ordinary lactic acid. During the refining process, a part of lactic acid is distilled out, which is called refined lactic acid; while the residual lactic acid and the original lactic acid Sugar, pigment, protein, etc. are called heavy phase lactic acid, also called black lactic acid; because it can o...

Claims

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Application Information

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IPC IPC(8): C07C59/08C07C51/48
Inventor 石从亮刘哲张国宣刘清华郭廷王敏王新顾永华李志民崔红梅张美霞张鹏于培星崔耀军王浩张树银
Owner 河南金丹乳酸科技股份有限公司