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Method for preparing glycine betaine by using beet ethyl alcohol waste liquor

A technology of alcohol waste liquid and betaine, which is applied in chemical instruments and methods, preparation of cyanide reaction, preparation of organic compounds, etc. It can solve problems affecting high-value applications, unguaranteed output, unstable product quality, etc. , to achieve significant economic and social benefits, good environmental protection effects, and low production costs

Active Publication Date: 2014-02-12
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] At present, there are many kinds of betaine, which can be divided into natural betaine and chemically synthesized betaine according to its production process. Chemical synthesis generally uses chloroacetic acid and trimethylamine as raw materials for normal pressure reaction in lye, and betaine mother liquor is distilled, hydrochloric acid Acidification, concentration, crystallization, and filtration into betaine hydrochloride, the active ingredient content of betaine prepared by conventional chemical synthesis method is about 75%, the impurity content is high, and the product quality is unstable, which seriously affects its high value in food, medicine, etc. application
The betaine obtained by the traditional natural extraction method has high purity, but the recovery rate is low, and is affected by the season and the scale of the beet sugar factory, so the output cannot be guaranteed

Method used

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  • Method for preparing glycine betaine by using beet ethyl alcohol waste liquor

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 Shown, the method for preparing betaine with beet alcohol waste liquor of the present embodiment may further comprise the steps:

[0029] (1) Add the flocculant polyacrylamide and coagulant aid to the beet alcohol waste liquid to form a mixture. The beet alcohol waste liquid is left at a temperature of 30°C for 2 hours to flocculate and settle the suspended matter, and take the supernatant; The add-on of described flocculant is: every 100ml sugar beet alcohol waste liquor adds 1g flocculant; Described coagulant aid is made up of the calcium oxide that is 40% by volume percentage and the phosphoric acid of 60% by volume percentage; The addition of described coagulant aid The amount is: add 1g of coagulant for every 100ml of beet alcohol waste liquid;

[0030] (2) The supernatant obtained in step (1) is decolorized, desalted and impurity-removed through the first ion-exchange column equipped with a mixed resin; Mixed with a volume ratio of 1;

[0031] ...

Embodiment 2

[0037] The method for preparing betaine with beet alcohol waste liquor of the present embodiment may further comprise the steps:

[0038](1) Add flocculant polyacrylamide and coagulant aid to the beet alcohol waste liquid to form a mixture, put the beet alcohol waste liquid at a temperature of 100°C for 24 hours to flocculate and settle the suspended matter, and take the supernatant; The addition amount of described flocculant is: every 100ml sugar beet alcohol waste liquid adds 10g flocculant; Step (1) described coagulant is made up of the calcium oxide that volume percentage is 90% and the phosphoric acid that volume percentage is 10%; The amount of coagulant added is: add 10g of coagulant per 100ml beet alcohol waste liquid;

[0039] (2) The supernatant obtained in step (1) is decolorized, desalted and impurity-removed through the first ion-exchange column equipped with a mixed resin; Mixed with a volume ratio of 15;

[0040] (3) Adjust the pH value of the supernatant tre...

Embodiment 3

[0046] The method for preparing betaine with beet alcohol waste liquor of the present embodiment may further comprise the steps:

[0047] (1) Add the flocculant polyacrylamide and coagulant aid to the beet alcohol waste liquid to form a mixture. The beet alcohol waste liquid is allowed to stand at a temperature of 70°C for 10 hours, and the temperature is 70°C to flocculate and settle the suspended matter. clear liquid; the addition of the flocculant is: every 100ml beet alcohol waste liquid adds 5g flocculant; the coagulant aid in step (1) is composed of calcium oxide with a volume percentage of 70% and phosphoric acid with a volume percentage of 30% ; The addition of the coagulant aid is: every 100ml beet alcohol waste liquid adds 5g coagulant aid;

[0048] (2) The supernatant obtained in step (1) is decolorized, desalted and impurity-removed through the first ion exchange column equipped with mixed resin; Mixed with a volume ratio of 8;

[0049] (3) Use a trimethylamine s...

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Abstract

The invention discloses a method for preparing glycine betaine by using beet ethyl alcohol waste liquor. The method comprises the following steps of (1) adding flocculant and coagulant aid into the beet ethyl alcohol waste liquor so as to form a mixture, standing till suspended solids flocculate and precipitate, and taking supernate; (2) carrying out decoloration, desalination and decontamination on the supernate through a first section of ion exchange column with mixed resin; (3) regulating the pH value of the supernate through trimethylamine, adsorbing and purifying the supernate through a second section of ion exchange column with strong acid cation exchange resin, eluting by using an eluent; (4) adding chloroacetic acid regenerant into the second section of ion exchange column for regenerating resin, reacting and generating glycine betaine while regenerating the resin, and obtaining the eluent with glycine betaine; and (5) heating, concentrating and crystallizing, cooling and centrifuging the eluent with glycine betaine, freeze drying so as to obtain white flake hydrous glycine betaine. According to the method, the beet ethyl alcohol waste liquor is taken as the raw material, so that the method has the advantages of high yield and low energy consumption, simple technology, economy and environment protection.

Description

technical field [0001] The invention relates to the field of betaine preparation, in particular to a method for preparing betaine from beet alcohol waste liquid. Background technique [0002] Betaine (betaine) chemical name betaine, molecular formula: C 5 h 11 NO 2 Molecular weight: 177.15, white powder, non-toxic, with special smell, melting point: 293°C. It is a natural quaternary amine alkaloid, which widely exists in animals and plants, and mainly exists in beet molasses, hence the name betaine. It has very important physiological functions. In the field of food and medicine, it can be used as a food additive. It has a good promoting effect on the growth and development of children and the health care of middle-aged and elderly people. Betaine has the function of treating and preventing liver diseases when used in medicine. In the field of livestock feed, betaine is a feed additive with a huge demand. It has strong food-attracting activity and can improve the feed in...

Claims

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Application Information

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IPC IPC(8): C07C229/12C07C227/40C07C227/08
Inventor 钟剑赵振刚马玲
Owner SOUTH CHINA UNIV OF TECH
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