CN101481746B - Sugar juice decoloring method - Google Patents
Sugar juice decoloring method Download PDFInfo
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- CN101481746B CN101481746B CN2008100734211A CN200810073421A CN101481746B CN 101481746 B CN101481746 B CN 101481746B CN 2008100734211 A CN2008100734211 A CN 2008100734211A CN 200810073421 A CN200810073421 A CN 200810073421A CN 101481746 B CN101481746 B CN 101481746B
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Abstract
The present invention discloses a sugar juice decoloring method. The method comprises the following steps: during a sugar making process, ClO2 is used for decoloring a sugar juice; the sugar juice refers to any one, two, three or four of a clear juice coming out of a clarification section, crude syrup or re-dissolution syrup coming out of an evaporation section, or massecuite coming out of a crystallization section; CIO2 is respectively added to any one, two, three, or four of the clear juice, the syrup or the messecuite; any one, two, three or four of the four sugar juices are respectively or simultaneously oxidized and declored; the amount of CIO2 added into the sugar juice is 0.0005 percent to 0.3 percent of the weight of the sugar juice; and the adding method is that CIO2 is directly added toa corresponding sugar juice, and the sugar juice is fully mixed and reacted with CIO2 during a flow and pumping process, so as to achieve the aim of oxidation and decoloration. The sugar juice decoloring method of the invention can effectively reduce the color value of the sugar juice, reduce the color value of a product sugar and the residue of sulfur, and simultaneously improve the purity and the quality of the sugar.
Description
Technical field:
The present invention relates to a kind of sugar refining technology method, relate in particular to a kind of method that in sugar manufacturing process, reduces the syrup colour.
Background technology:
The colour of white sugar is the quality index that white sugar is most important, technical difficulty is maximum.The kind of coloring matter is very many and complicated in the sugar products, comprises the coloring matter two big classes that contained originally in the sugarcane and generate in process of production.Originally the pigment that contained in the sugarcane mainly contains fat-soluble and water-soluble two big classes, and the lipoid coexistence is water insoluble basically in the former and the sugarcane juice, and major part can be removed when heating.Water colo(u)r mainly is various polyphenols, and they are the major causes that make white sugar and various sugar products band looks.On the other hand, in sugar manufacturing process, except clarifying treatment is removed the part coloring matter, all constantly generate new coloring matter, or original colourless or light material becomes more dark material.Therefore, reduce the colour of white sugar, must or avoid generation two aspects of the new coloring matter of sugaring process to start with from clarification link and inhibition.
In traditional sugar refining technology process, removing mainly of coloring matters such as pigment finished by clarifying process.Present clarification process mainly contains three kinds of lime method, sulfurous method and carbonatation process, and the sulfurous method clarification process is generally adopted by sugar refinery institute because its clarifying effect is good, cost is low.The sulfurous method clarification process mainly is by the calcium sulfite throw out partial pigment to be removed; In addition, sulfurous acid with multiple double bond containing organism, particularly be good at and wherein the most active composition combine, reduce the double bond containing quantity of organism, suppressed their polycondensation, reduce the generation of colored substance; Free sulfurous acid has been eliminated free oxygen and the oxidizing substance in the material, weakens the generation of organic polycondensation and new pigment.
Yet, in the sulfurous method clarification process, handling normal sugarcane and operational administrative when relatively good, clarifying effect can adapt to present requirement substantially, but also exist White Sugar Quality not ideal enough, colour, turbidity and insolubles content are higher, the color and luster meeting flavescence and the moisture absorption when depositing; SO in the white sugar
2Shortcomings such as content is higher.Therefore, the white sugar of many sulfitation sugar mills is not suitable for producing high-grade beverage, can, food and medicine.
In order to overcome the deficiency that the sulfurous method clarification process exists, people have carried out continuous improvement to the sulfurous method clarification process, and have obtained some achievements.Combine with the phosphorus float glass process as sulfurous method, can effectively reduce the sulphur content in the sugar products, but there is the technical process lengthening in it, can cause the extra losses of sucrose and the shortcomings such as increase of colour; So develop sugar juice decoloring agent or sugar juice decoloring novel method efficiently, the clarification process of sulfurous method is carried out effectively replenishing or improving, be one of reform orientation of clarification process of sugar production, also be to wish the problem that solves in the present sugar industry.
Summary of the invention:
The technical problem to be solved in the present invention is: the method that a kind of a kind of sugar juice decoloring based on the sulfurous method clarification process is provided, this method can reduce syrup colour, the content that reduces coloring matter in the finished product white sugar and the residual quantity of sulphur effectively, improve white sugar purity simultaneously but can not cause the extra losses of sucrose, to solve above-mentioned sulfurous method clarification process and sulfurous method combine clarification process with the phosphorus float glass process weak point.
The technical scheme that solves its above-mentioned technical problem is: a kind of method of sugar juice decoloring, this method are in the sugaring process of utilization sulfurous method clarification process, adopt ClO
2Syrup is decoloured, that is: with ClO
2Add in the syrup, described syrup or clear juice or the raw sugar slurry or retro-dissolved syrup or the massecuite that come out from evaporation section are with ClO
2Add to respectively or simultaneously clearly in juice or syrup or the massecuite, it is carried out oxidative decoloration.
Further technical scheme of the present invention is: described ClO
2Consumption is 0.0005%～0.3% weight of syrup weight.
Because adopt technique scheme, the method for a kind of sugar juice decoloring of the present invention compared with prior art has following beneficial effect:
1. it is low to handle back syrup colour, thereby makes the colour of finished product white sugar low, the quality product height.The white sugar colour is subjected to syrup quality and effects of operation conditions, thereby the colour of syrup directly has influence on the colour of white sugar, and the present invention adopts oxygenant ClO
2Two key oxidations of syrup pigment are ruptured, original coloring matter molecule is destroyed generating that molecular weight is lower, to contain two keys less, and polycondensation becomes the material of colored substance again; So pass through ClO
2The syrup that oxidative decoloration is handled, the syrup colour reduces greatly, and its percent of decolourization reaches 40%-90%, greatly reduced the colour of syrup, thereby reduce the colour of finished product white sugar, improved the quality of white sugar, make white sugar be suitable for producing high-grade beverage, can, food and medicine.
2. the white sugar sulphur content is low.The sulfurous method clarification process mainly is by the calcium sulfite throw out partial pigment to be removed; In addition, sulfurous acid with multiple double bond containing organism, particularly be good at and wherein the most active composition combine, reduce the double bond containing quantity of organism, suppressed their polycondensation, reduce the generation of colored substance; Free sulfurous acid has been eliminated free oxygen and the oxidizing substance in the material, weakens the generation of organic polycondensation and new pigment.The present invention replenishes as the sulfurous method clarification process, by clear juice or syrup are carried out ClO
2Oxidative decoloration can be cancelled secondary stove drying (syrup sulphur floats); Can make the SO that adds syrup
2Amount reduces, and also makes the SO that remains in the syrup simultaneously
3 2-Amount significantly reduces, and compare with existing sulfurous method clarification process and reduce 30%-70%, thus the content of sulphur in the reduction white sugar.
3. the purity of white sugar improves.In the crystallisation process of sucrose, though the coloring matter in the syrup (pigment) major part is difficult for entering in the crystal, but the high-molecular weight coloring matter in the syrup can enter into white sugar or former sugar crystal with larger proportion, becomes the main pigment of white sugar or raw sugar.Pass through ClO
2Syrup is handled,, original coloring matter molecule destroyed generating that molecular weight is lower, to contain two keys less, and polycondensation becomes the material of colored substance again owing to its two key oxidations to pigment molecular in the syrup make its fracture; Thereby, on the one hand, the total coloring matter in the syrup has been reduced, on the other hand, make original high molecular coloring matter molecule be cracked into small molecular weight coloring matter molecule, the pigment molecular that enters in the crystal is significantly reduced, the purity of white sugar improves.
4. can not cause the sucrose loss.Because ClO
2Object to oxidation has selectivity, i.e. ClO
2Can be to two key oxidations of the pigment molecular of syrup and make its fracture, original coloring matter molecule destroyed generate that molecular weight is lower, to contain two keys less, and polycondensation becomes the material of colored substance again, but can not carry out oxidation to glycosidic link, guaranteed that sucrose can not lose, thereby avoided other oxygenant owing to there is not selectivity that glycosidic link is carried out the loss that oxidation causes sucrose.
5. technology is simple, cost is low.Adopt ClO
2To the syrup processing of decolouring, technology is simple, need not original technical process is changed; In addition, pass through ClO
2Syrup is handled, can be reduced sulphur and (be used to produce SO
2Raw material) and lime (be used to produce Ca (OH)
2Raw material) consumption, what is more important can be cancelled big, the higher syrup phosphorus float glass process of working cost of investment, significantly reduces the investment working cost, has alleviated the loss of sucrose simultaneously.
Below, the technical characterictic to the method for a kind of sugar juice decoloring of the present invention is further described in conjunction with the accompanying drawings and embodiments.
Description of drawings:
(nothing)
Embodiment:
Embodiment one:
A kind of method of sugar juice decoloring is in the sugaring process of utilization sulfurous method clarification process, adopts ClO
2Syrup is carried out oxidative decoloration, and described syrup is meant from clarifying the clear juice that workshop section comes out, with ClO
2Add to clearly in the juice, as further replenishing of clarifying process; ClO
2Consumption is decided according to the height of color value of clear juice, is generally 0.001%～0.05% weight of juice weight clearly, as required, and ClO
2Addition also can increase or be reduced to: 0.0005%～0.3% weight of clear juice weight.
Embodiment two:
A kind of method of sugar juice decoloring is in the sugaring process of utilization sulfurous method clarification process, with ClO
2Add to just the raw sugar slurry that come out from evaporation section or the retro-dissolved syrup and carry out oxidative decoloration, its consumption decide according to the height of raw sugar slurry or retro-dissolved syrup colour, is generally that raw sugar is starched or 0.001%～0.05% weight of retro-dissolved syrup weight, as required, and ClO
2Addition also can increase or be reduced to: 0.0005%～0.3% weight of raw sugar slurry or retro-dissolved syrup weight.
Embodiment three:
A kind of method of sugar juice decoloring is in the sugaring process of utilization sulfurous method clarification process, adopts ClO
2The massecuite that comes out from crystallization workshop section is decoloured, be about to ClO
2Add in the massecuite, its consumption decides according to the height of massecuite colour, is generally 0.001%～0.05% weight of massecuite weight, as required, ClO
2Addition also can increase or be reduced to: 0.0005%～0.3% weight of massecuite weight.
Embodiment four:
A kind of method of sugar juice decoloring is in the sugaring process of utilization sulfurous method clarification process, adopts ClO
2Carrying out oxidative decoloration to the raw sugar slurry that comes out from the clarification clear juice that comes out of workshop section with from evaporation section or retro-dissolved syrup with from the massecuite that crystallization workshop section comes out simultaneously, will be respectively the ClO of clear juice weight 0.0005%～0.2% weight
2Adding to clearly in the juice, will be the ClO of raw sugar slurry or retro-dissolved syrup weight 0.0005%～0.2% weight
2Add in the syrup, will be the ClO of massecuite weight 0.0005%～0.2% weight
2Add in the massecuite, to the processing of decolouring of clear juice and raw sugar slurry or retro-dissolved syrup and four kinds of syrups of massecuite, its total consumption must not be greater than 0.5% weight of all kinds of syrup gross weights of being decoloured simultaneously.
As a kind of conversion of the embodiment of the invention, as required, also can be with ClO
2Add clearly juice simultaneously respectively to, from raw sugar slurry or any two kinds of syrups retro-dissolved syrup or the massecuite that evaporation section comes out, raw sugar slurry that comes out to clear juice, from evaporation section or any two kinds of syrups retro-dissolved syrup or the massecuite processing of decolouring simultaneously, ClO
2Consumption is decided according to the height of syrup colour, is respectively 0.0005%～0.2% weight of juice clearly or raw sugar slurry or retro-dissolved syrup or massecuite weight, and its total consumption must not be greater than 0.5% weight of all kinds of syrup gross weights of being decoloured.
In the various embodiments of the present invention, described ClO
2Be gasiform ClO
2, its addition manner all is directly with ClO
2Add in the corresponding syrup, syrup flow and the pumping process in will and ClO
2Mix fully and react, thereby reach the purpose of oxidative decoloration.
Claims (2)
1. the method for a sugar juice decoloring is characterized in that: this method is in the sugaring process of utilization sulfurous method clarification process, adopts ClO
2Syrup is decoloured, that is: with ClO
2Add in the syrup, described syrup or clear juice or syrup or massecuite are with ClO
2Add to respectively or simultaneously clearly in juice or syrup or the massecuite, it is carried out oxidative decoloration;
When described syrup is from the clear juice that comes out of clarification workshop section, add the ClO in the juice clearly to
2Consumption is 0.0005%～0.3% weight of clear juice weight;
When described syrup is the raw sugar slurry or the retro-dissolved syrup that just come out from evaporation section, add the ClO in raw sugar slurry or the retro-dissolved syrup to
2Consumption is 0.0005%～0.3% weight of syrup weight;
When described syrup is the massecuite that comes out from crystallization workshop section, add the ClO in the massecuite to
2Consumption is 0.0005%～0.3% weight of massecuite weight;
When with ClO
2Add juice clearly simultaneously respectively to, from evaporation section comes out thick syrup or retro-dissolved syrup or the massecuite any two kinds, three kinds or four kinds, when any two kinds, three kinds in raw sugar slurry, retro-dissolved syrup or the massecuite that clear juice, evaporation section are come out or four kinds of syrups are decoloured simultaneously, the described ClO that adds in the syrup
2Consumption is respectively 0.0005%～0.2% weight of juice clearly or syrup or massecuite weight, and its total consumption must not be greater than 0.5% weight of all kinds of syrup gross weights of being decoloured.
2. the method for a kind of sugar juice decoloring according to claim 1 is characterized in that: ClO
2Addition manner be directly with ClO
2Add in the corresponding syrup, syrup flow and the pumping process in will and ClO
2Mix fully and react, thereby reach the purpose of oxidative decoloration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100734211A CN101481746B (en) | 2008-01-09 | 2008-01-09 | Sugar juice decoloring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100734211A CN101481746B (en) | 2008-01-09 | 2008-01-09 | Sugar juice decoloring method |
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| CN101481746A CN101481746A (en) | 2009-07-15 |
| CN101481746B true CN101481746B (en) | 2011-08-31 |
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| CN2008100734211A Expired - Fee Related CN101481746B (en) | 2008-01-09 | 2008-01-09 | Sugar juice decoloring method |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103571976A (en) * | 2013-11-12 | 2014-02-12 | 广西科技大学 | Method for reducing clear juice color value in sugar-making process by sulfurous method |
| CN104278108A (en) * | 2014-10-22 | 2015-01-14 | 广西科技大学 | Oxidative decolorization method for remelt syrup of brown granulated sugar by using lime clarification method combined with chlorine dioxide |
| CN104450980B (en) * | 2014-10-22 | 2017-06-13 | 广西科技大学 | The method that nano oxidized iron fortified brown granulated sugar remelt syrup decolourizes |
| WO2016090213A1 (en) * | 2014-12-05 | 2016-06-09 | E. I. Du Pont De Nemours And Company | Method of desulphitation of carbohydrates |
| CN108251564B (en) * | 2016-12-29 | 2021-08-24 | 广西科技大学 | Sugar juice composite decoloring agent and sugar juice decoloring method |
| CN109234466A (en) * | 2018-08-20 | 2019-01-18 | 广西大学 | A method of white granulated sugar color value is reduced using anthocyanin enzyme |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1687461A (en) * | 2005-04-22 | 2005-10-26 | 广西天人科技开发有限责任公司 | Technique for treating filtered juice from sugar mill |
| CN1271218C (en) * | 2004-03-01 | 2006-08-23 | 广西天人科技开发有限责任公司 | Purification agent for decolour in making sugar, purification method for declour of sugar juice and technology for directing producing fine white sugar thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1271218C (en) * | 2004-03-01 | 2006-08-23 | 广西天人科技开发有限责任公司 | Purification agent for decolour in making sugar, purification method for declour of sugar juice and technology for directing producing fine white sugar thereof |
| CN1687461A (en) * | 2005-04-22 | 2005-10-26 | 广西天人科技开发有限责任公司 | Technique for treating filtered juice from sugar mill |
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