CN107573234A - A kind of industrial method for extracting citric acid - Google Patents
A kind of industrial method for extracting citric acid Download PDFInfo
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- CN107573234A CN107573234A CN201710630404.2A CN201710630404A CN107573234A CN 107573234 A CN107573234 A CN 107573234A CN 201710630404 A CN201710630404 A CN 201710630404A CN 107573234 A CN107573234 A CN 107573234A
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- citric acid
- extracting method
- calcium carbonate
- fermentation broth
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Abstract
The invention discloses a kind of extracting method of industrial citric acid, following operation is included：Gained citric acid fermentation broth adds colchicine after to pretreatment, and keeping temperature is 35~38 DEG C and stands 2~3 hours, then adds calcium carbonate, post-processes and produce.Finite concentration and the colchicine of dosage are added in the present invention in citric acid fermentation broth, the forward reaction of citric acid and calcium carbonate can be effectively promoted, promote more citric acids to be extracted, substantially increase the yield of citric acid.
Description
Technical field
The present invention relates to a kind of extracting method of citric acid, more particularly to a kind of industrial method for extracting citric acid.
Background technology
Citric acid is a kind of important organic acid, also known as citric acid, clear crystal, often contains a molecular crystalline water, odorless, is had
Very strong tart flavour, soluble in water, it has extremely more purposes in industry, grocery trade, cosmetic industry etc..At present, domestic citric acid
Extracting method is mainly calcium salt method and hydrogen calcium method, and traditional hydrogen calcium method is included with certain density calcium carbonate and/or calcium hydroxide slurry
With citric acid fermentation aqueous solution neutralization reaction occurs for liquid, calcium hydrogen citrate is generated, by using the liquid after upper row's neutralization reaction
Mode, remove wherein impurity, calcium hydrogen citrate and obtain citric acid through hydrolysis step again.In the prior art using hydrogen calcium method extraction lemon
Lemon acid recovery rate is not very high, it is desirable to improves citric acid income rate it is necessary to increase calcium carbonate and/or calcium hydroxide dosage, that is, increases
Addition sheet, it is again bad for improving citric acid income rate effect.Therefore, citric acid income rate can be improved by needing one kind badly at present, drop
The method for extracting citric acid of low production cost.
The information for being disclosed in the background section is merely intended to understanding of the increase to the general background of the present invention, without answering
It has been the prior art well known to persons skilled in the art when being considered as recognizing or implying the information structure in any form.
The content of the invention
The problem of present invention is not high for the existing extraction citric acid yield of prior art, and cost is higher, invents a kind of work
The extracting method of industry citric acid, it is intended to obtain the extracting method that a kind of yield is high, cost is low.
To achieve the above object, technical scheme provided by the invention is as follows：
A kind of extracting method of industrial citric acid, includes following operation：Gained citric acid fermentation broth adds after to pretreatment
Enter colchicine, keeping temperature is 35~38 DEG C and stands 2~3 hours, then adds calcium carbonate, post-processes and produce.
Preferably, the pretreatment of described citric acid fermentation broth is that citric acid fermentation broth is filtered, removes residue and bacterium
Body, produce.
Preferably, citric acid content is 90~120g/L in described citric acid fermentation broth.
Preferably, described colchicine mass percentage concentration is 0.12%.
Preferably, described colchicine dosage is gained 0.01~0.02 times of zymotic fluid quality after pretreatment.
Preferably, described calcium carbonate dosage is the calcium carbonate that every cube of citric acid fermentation broth adds 40~45kg.
Preferably, described post processing is followed successively by filtering, acidolysis, purification, condensing, crystallization, centrifugation and dried.
Gained citric acid is prepared as above to apply in industry, is such as used as experiment reagent, chromatography reagent and biochemical examination
Agent, complexing agent, screening agent etc..
Compared with prior art, the present invention has the advantages that：
Finite concentration and the colchicine of dosage are added in the present invention in citric acid fermentation broth, lemon can be effectively promoted
The forward reaction of lemon acid and calcium carbonate, promotes more citric acids to be extracted, substantially increases the yield of citric acid.
Embodiment
It is described in detail with reference to embodiment, it is to be understood that protection scope of the present invention is not by specific
The limitation of embodiment.
Embodiment 1
A kind of extracting method of industrial citric acid：Citric acid fermentation broth is filtered, removes residue and thalline, produces, to
The citric acid fermentation broth that gained citric acid content is 90g/L after above-mentioned processing adds the autumn waters -- limid eyes that mass percentage concentration is 0.12%
Celestial element, addition are 0.01 times of citric acid fermentation broth quality added, and keeping temperature is 35 DEG C and stands 3 hours, then according to
The calcium carbonate that every cube of citric acid fermentation broth adds 40kg adds calcium carbonate, successively by filtering, acidolysis, purification, condensing, knot
Crystalline substance, centrifuge and dry, produce citric acid, it is 97.2% to calculate citric acid yield.
Gained citric acid is prepared as above to apply in industry, is such as used as experiment reagent, chromatography reagent and biochemical examination
Agent, complexing agent, screening agent etc..
Embodiment 2
A kind of extracting method of industrial citric acid：Citric acid fermentation broth is filtered, removes residue and thalline, produces, to
The citric acid fermentation broth that gained citric acid content is 120g/L after above-mentioned processing adds the autumn that mass percentage concentration is 0.12%
Narcissus element, addition are 0.02 times of the citric acid fermentation broth quality of addition, and keeping temperature is 38 DEG C and stands 2 hours, then presses
The calcium carbonate that 43kg is added according to every cube of citric acid fermentation broth adds calcium carbonate, successively by filtering, acidolysis, purification, condensing, knot
Crystalline substance, centrifuge and dry, produce citric acid, it is 98.7% to calculate citric acid yield.Gained citric acid is prepared as above and applies to work
In industry, such as it is used as experiment reagent, chromatography reagent and biochemical reagents, complexing agent, screening agent.
Embodiment 3
A kind of extracting method of industrial citric acid：Citric acid fermentation broth is filtered, removes residue and thalline, produces, to
The citric acid fermentation broth that gained citric acid content is 1100g/L after above-mentioned processing adds the autumn that mass percentage concentration is 0.12%
Narcissus element, addition are 0.01 times of the citric acid fermentation broth quality of addition, and keeping temperature is 37 DEG C and stands 2 hours, then presses
The calcium carbonate that 45kg is added according to every cube of citric acid fermentation broth adds calcium carbonate, successively by filtering, acidolysis, purification, condensing, knot
Crystalline substance, centrifuge and dry, produce citric acid, it is 98.5% to calculate citric acid yield.
Gained citric acid is prepared as above to apply in industry, is such as used as experiment reagent, chromatography reagent and biochemical examination
Agent, complexing agent, screening agent etc..
Embodiment 4
A kind of extracting method of industrial citric acid：Citric acid fermentation broth is filtered, removes residue and thalline, produces, quiet
Put 2 hours, the calcium carbonate that 45kg is then added according to every cube of citric acid fermentation broth adds calcium carbonate, successively by filtering, acid
Solution, purify, be condensing, crystallizing, centrifuging and drying, producing citric acid, calculating citric acid yield as 89%.The foregoing tool to the present invention
The description of body exemplary is to illustrate the purpose with illustration.These descriptions are not wishing to limit the invention to institute's public affairs
The precise forms opened, and it will be apparent that according to above-mentioned teaching, much can be changed and changed.Exemplary embodiment is entered
The purpose of row selection and description is the certain principles and its practical application for explaining the present invention, so that those skilled in the art
Member can realize and utilize a variety of exemplaries and the various chooses and changes of the present invention.This hair
Bright scope is intended to be limited by claims and its equivalents.
Claims (7)
1. a kind of extracting method of industrial citric acid, it is characterised in that include following operation：Gained citric acid after to pretreatment
Zymotic fluid adds colchicine, and keeping temperature is 35~38 DEG C and stands 2~3 hours, then adds calcium carbonate, post-processes and produce.
2. extracting method according to claim 1, it is characterised in that：The pretreatment of described citric acid fermentation broth is lemon
Acid fermentation liquid is filtered, produces.
3. extracting method according to claim 1, it is characterised in that：Citric acid content is in described citric acid fermentation broth
90~120g/L.
4. extracting method according to claim 1, it is characterised in that：Described colchicine mass percentage concentration is
0.12%.
5. extracting method according to claim 1, it is characterised in that：Described colchicine dosage is gained after pretreatment
0.01~0.02 times of zymotic fluid quality.
6. extracting method according to claim 1, it is characterised in that：Described calcium carbonate dosage is that every cube of citric acid is sent out
Zymotic fluid adds 40~45kg calcium carbonate.
7. extracting method according to claim 1, it is characterised in that：Described post processing is followed successively by filtering, acidolysis, net
Change, be condensing, crystallizing, centrifuging and drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710630404.2A CN107573234A (en) | 2017-07-28 | 2017-07-28 | A kind of industrial method for extracting citric acid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710630404.2A CN107573234A (en) | 2017-07-28 | 2017-07-28 | A kind of industrial method for extracting citric acid |
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| CN201710630404.2A Pending CN107573234A (en) | 2017-07-28 | 2017-07-28 | A kind of industrial method for extracting citric acid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111517519A (en) * | 2020-05-08 | 2020-08-11 | 欣格瑞（山东）环境科技有限公司 | Treatment method of citric acid cleaning waste liquid |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102417452A (en) * | 2011-12-16 | 2012-04-18 | 中粮生物化学（安徽）股份有限公司 | Preparation method of citrate |
| CN102503812A (en) * | 2011-11-03 | 2012-06-20 | 中粮生物化学（安徽）股份有限公司 | Method for increasing citric acid yield in extracting process of citric acid with calcium-salt method |
-
2017
- 2017-07-28 CN CN201710630404.2A patent/CN107573234A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102503812A (en) * | 2011-11-03 | 2012-06-20 | 中粮生物化学（安徽）股份有限公司 | Method for increasing citric acid yield in extracting process of citric acid with calcium-salt method |
| CN102417452A (en) * | 2011-12-16 | 2012-04-18 | 中粮生物化学（安徽）股份有限公司 | Preparation method of citrate |
Non-Patent Citations (2)
| Title |
|---|
| 伍时华等: "从发酵液中提取柠檬酸的研究进展", 《广西工学院学报》 * |
| 李洪奎: "《化学反应和化学方程式》", 30 April 1981, 长春：吉林人民出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111517519A (en) * | 2020-05-08 | 2020-08-11 | 欣格瑞（山东）环境科技有限公司 | Treatment method of citric acid cleaning waste liquid |
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Application publication date: 20180112 |
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