CN103194545A - Method for treating sugarcane mixed clear juice - Google Patents
Method for treating sugarcane mixed clear juice Download PDFInfo
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- CN103194545A CN103194545A CN2013101254320A CN201310125432A CN103194545A CN 103194545 A CN103194545 A CN 103194545A CN 2013101254320 A CN2013101254320 A CN 2013101254320A CN 201310125432 A CN201310125432 A CN 201310125432A CN 103194545 A CN103194545 A CN 103194545A
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Abstract
The invention discloses a treatment technology for sugarcane mixed clear juice, and in particular relates to a membrane method for treating the sugarcane mixed clear juice. The method comprises the following steps of: filtering the mixed clear juice through a first stage ultrafiltration membrane; filtering the obtained clear liquor through a second stage ultrafiltration membrane; evaporating the strong liquor filtered by the first stage ultrafiltration membrane for preparing sugar; mixing the mixed clear juice and the strong liquor filtered by the second stage ultrafiltration membrane and filtering by the first stage ultrafiltration membrane; and concentrating the thin liquor filtered by the second stage ultrafiltration membrane by a membrane concentration device so as to obtain a concentrated solution and plain water, wherein the molecular weight cutoff of the first stage ultrafiltration membrane is 50000-100000 Dalton, and the molecular weight cutoff of the second stage ultrafiltration membrane is 1000-20000 Dalton. The method has the advantages that the energy consumption can be greatly lowered, the equipment has low operating cost and long service life, the quality of the product is improved sharply, the degree of automation is higher and the method is more environment-friendly.
Description
Technical field
The present invention relates to the treatment technology that a kind of sugarcane mixes clear juice, relate in particular to embrane method and handle the treatment process that sugarcane mixes clear juice.
Background technology
Sucrose is a kind of disaccharide, crystal white.Sucrose is photosynthetic primary product, is distributed widely in the plant materials, and particularly content is high in beet, sugarcane and the fruit.Sucrose is the principal mode of plant storage, accumulation and transportation sugar.The raw material of sucrose mainly is sugarcane and beet.Sugarcane or beet are crushed with machine, collect syrup, filter the back and use lime treatment, remove impurity, bleach with sulfurous gas again; Treated syrup is boiled, take out the impurity that sinks to the bottom, scrape off the foam on the face of floating to, stop working then and treat that the syrup crystallization becomes sucrose.China is main with the sugarcane for raw material production sucrose.Its technology is: sugarcane is squeezed earlier, is that sugarcane juice is clarified then, carries out evaporative process again, carries out crystallization operation again, carries out sepn process after crystallization, is dry then, finally by packing get final product the sucrose product.
Wherein cane juice clarification divides by the purification agent that adds, and can be divided into sulfurous method and carbonatation process.Sulfurous method is to adopt the sulfurous gas of lime as main sanitising agent, mix the pre-ash of mixing juice, once go into settling vessel after heating, stove drying neutralization, the second-heating, isolate juice and mud juice clearly, mud juice obtains filtered juice after filtration, mix clear juice with being after clear juice mixes, mix clear juice and obtain syrup through evaporation, syrup stove drying, crystallization obtain sucrose.According to above-mentioned technology, the sucrose that obtains can only meet the index of one-level among the white sugar standard GB317-2006 or top grade, can not reach refining index, simultaneously, consumes a large amount of steam in evaporating course.
Every physical and chemical index of GB317-2006 white sugar
Summary of the invention
The present invention is intended to overcome the deficiency in the existing sugar refining technology, adopt membrane technique to handle and mix clear juice, need not stove drying, the sucrose quality index of producing can reach top grade, adopt membrane technique to substitute the part evaporation simultaneously, reduce steam consumption greatly, save energy, meanwhile, can also reclaim the water of squeezing the juice and producing.
Purpose of design of the present invention: avoid the deficiency in the background technology, providing a kind of is the mixed clear juice processing scheme of core with the membrane technique, reaches the high-quality sucrose of preparation, reduces the purpose of steam consumption and recycle-water resource simultaneously.
Design: in order to reach purpose of design, the present invention is raw material with the clear juice of the mixing of cane milling, adopts the ultra-filtration membrane clarification technique to improve sugar products matter, adopts nanofiltration and reverse osmosis combination technology concentrating clarifying liquid, reduces energy consumption.
The present invention is achieved by following technical proposals:
A kind of sugarcane mixes clear juice treatment process, it is characterized in that the step of handling is as follows:
(1) mixes clear juice and enter first step ultrafiltration membrance filter, the clear liquid that filtration obtains enters second stage ultrafiltration membrance filter again, dope devaporation behind first step ultrafiltration membrance filter sugaring, the dope behind the ultrafiltration membrance filter of the second stage with mix clear juice merging and enter first step ultrafiltration membrance filter;
(2) the light liquid that obtains behind the ultrafiltration membrance filter of the second stage in the step (1) enters film condensing device and concentrates, and obtains concentrated solution and fresh water;
The molecular weight cut-off of described first step ultra-filtration membrane is 50000 ~ 100000 dalton, and the molecular weight cut-off of described second stage ultra-filtration membrane is 1000 ~ 20000 dalton.Wherein preferred 50000 ~ 80000 dalton of the molecular weight cut-off of first step ultra-filtration membrane mainly remove the settlement separate fine particle thing of not removing, and macromolecular organism.The molecular weight cut-off of second stage ultra-filtration membrane is preferably 2000 ~ 10000 dalton, mainly removes pigment and organic impurity that some first step ultrafiltration fail to remove.Membrane material can be polymeric amide, polyethersulfone or modified polyacrylonitrile, selects rolled film or tubular membrane for use.In this step, the rate of recovery is controlled 15% ~ 90%, can design according to user's actual demand.
As preferably, above-mentioned a kind of sugarcane mixes the clear juice of mixing in the clear juice treatment process, and to be cane milling juice handle the purified juice that obtains and the mixed solution of filtered juice through clarification process.
As preferably, above-mentioned a kind of sugarcane mixes the first step ultra-filtration membrane working pressure control described in the clear juice treatment process at 0.05 MPa ~ 0.5MPa, between 20 ~ 50 ℃ of the control temperature, filtration time≤30 minute, the pH control of feed liquid is between 6 ~ 8, the clear liquid colour that filtration obtains is 300 ~ 700IU, hammer degree 12 ~ 20BX
0, simple purity 89% ~ 93%, turbidity 0.3 ~ 2NTU.
As preferably, above-mentioned a kind of sugarcane mixes the second stage ultra-filtration membrane working pressure control described in the clear juice treatment process at 1.0MPa ~ 3.0MPa, between 20 ~ 40 ℃ of the control temperature, and filtration time≤30 minute, the clear liquid colour that obtains of filtering is 20 ~ 200IU, hammer degree 12 ~ 20BX
0, simple purity 91% ~ 95%, turbidity 0.05 ~ 0.5.
As preferably, it is tubular membrane or flat sheet membrane that above-mentioned a kind of sugarcane mixes the ultra-filtration membrane described in the clear juice treatment process, and crossflow velocity is 1.5m/s ~ 6.0m/s, and membrane material is polyethersulfone, polyvinylidene difluoride (PVDF), tetrafluoroethylene or pottery.
As preferably, it is the combination of nanofiltration membrane, reverse osmosis membrane or nanofiltration and reverse osmosis membrane that above-mentioned a kind of sugarcane mixes the film condensing device described in the clear juice treatment process, membrane material is polymeric amide, polyethersulfone or modified polyacrylonitrile, and membrane structure is rolled film or tubular membrane.In order to reach better effect, above-mentioned nanofiltration membrane molecular weight cut-off is 150 ~ 500 dalton, and described reverse osmosis membrane is 99.0% ~ 99.8% to the standard ratio of desalinization of sodium-chlor.
As preferably, above-mentioned a kind of sugarcane mixes the film condensing device described in the clear juice treatment process, adopt two-piece design, first section working pressure control is at 2.0 ~ 4.0MPa, second section pressure-controlling is at 3.5 ~ 6.0Mpa, temperature control is between 25 ~ 45 ℃, and every section filtration time was all controlled at≤20 minutes.
As preferably, above-mentioned a kind of sugarcane mixes and mixes clear juice in the clear juice treatment process through total time≤60 of described first step ultrafiltration, second stage ultrafiltration, film condensing device minute.
As preferably, above-mentioned a kind of sugarcane mixes the concentrated solution after film condensing device concentrates described in the clear juice treatment process and obtains refined sugar through evaporative crystallization, the fresh water of described film condensing device through sterilization as pure water or as the supplementary feed that filters.
Beneficial effect: the present invention can cut down the consumption of energy greatly, and low, the long service life of the running cost of equipment, the quality of product is greatly improved, and level of automation is higher, more environmental protection.
Embodiment
Below enforcement of the present invention is specified:
Embodiment 1
Get and mix clear juice, index is as follows:
| Control hammer degree BX 0 | Pol (sucrose %) | Letter purity (%) | Turbidity (NTU) | Colour IU |
| 15.8 | 13.79 | 87.30 | 7.61 | 959.91 |
To be cane milling juice handle the purified juice that obtains and the mixed solution of filtered juice through clarification process to the clear juice of described mixing.
Then the clear juice of above-mentioned mixing is sent into first step ultra-filtration membrane, the molecular weight cut-off of ultra-filtration membrane is 50000 dalton, working pressure control is at 0.1MPa, 25 ℃ of control temperature, filtration time 24 minutes, the pH control of feed liquid is filtered the clear liquid index that obtains and is seen the following form 7, first step ultrafiltration is filtered, the control rate of recovery 60%; Dope devaporation sugaring behind the first step ultrafiltration membrance filter; And then carry out second stage ultrafiltration membrance filter, and the molecular weight cut-off of second stage ultra-filtration membrane is 5000 dalton, working pressure is controlled at 1.5MPa, 24 ℃ of control temperature, filtration time 30 minutes filters the clear liquid index that obtains and sees the following form, second stage ultra-filtration filters, 60% of rate of recovery control.In the present embodiment, described ultra-filtration membrane is tubular membrane, and crossflow velocity is 2.5m/s, and membrane material is polyethersulfone.
The light liquid that obtains behind the ultrafiltration membrance filter of the second stage enters film condensing device and concentrates, and obtains concentrated solution and fresh water; Enter first section reverse osmosis concentration, control pressure 3.0MPa, the dope that the control rate of recovery is 30%, the first section enter second section to be continued to concentrate, control pressure 5.0 MPa, and the control rate of recovery 30%, the dope that obtains goes sugaring, and the light liquid that obtains uses as boiler feedwater.Concentrated solution obtains refined sugar through evaporative crystallization, and the fresh water of film condensing device is through the supplementary feed of sterilization as pure water or conduct filtration.Described film condensing device is the combination of nanofiltration and reverse osmosis membrane, and membrane material is polymeric amide, and form membrane is rolled film, and described nanofiltration membrane molecular weight cut-off is 150 ~ 250 dalton, and described reverse osmosis membrane is more than 99.0% to the standard ratio of desalinization of sodium-chlor.First section working pressure control is at 2.4MPa, and second section pressure-controlling is at 4.0Mpa, and temperature is controlled between 25 ℃, and every section filtration time was all controlled at 20 minutes.
In the present embodiment, every index is as follows:
In the present embodiment, with respect to traditional making processes, the prepared product quality of the present invention is better, and energy consumption is lower, and service temperature is also carried out at normal temperatures.
Embodiment 2
The mixing clear juice identical with embodiment 1, index is as follows:
| Control hammer degree BX 0 | Pol (sucrose %) | Letter purity (%) | Turbidity (NTU) | Colour IU |
| 15.8 | 13.79 | 87.30 | 7.61 | 959.91 |
To be cane milling juice handle the purified juice that obtains and the mixed solution of filtered juice through clarification process to the clear juice of described mixing.
Then the clear juice of above-mentioned mixing is sent into first step ultra-filtration membrane, the molecular weight cut-off of ultra-filtration membrane is 80000 dalton, and working pressure is controlled at 0.2MPa, 30 ℃ of control temperature, filtration time 15 minutes, the pH control of feed liquid is 7, first step ultrafiltration is filtered, the control rate of recovery 70%; Dope devaporation sugaring behind the first step ultrafiltration membrance filter; And then carry out second stage ultrafiltration membrance filter, and the molecular weight cut-off of second stage ultra-filtration membrane is 10000 dalton, working pressure is controlled at 2.0MPa, 30 ℃ of control temperature, filtration time 20 minutes, second stage ultra-filtration filters, 70% of rate of recovery control.In the present embodiment, described ultra-filtration membrane is flat sheet membrane, and crossflow velocity is 3.5m/s, and membrane material is tetrafluoroethylene.
The light liquid that obtains behind the ultrafiltration membrance filter of the second stage enters film condensing device and concentrates, and obtains concentrated solution and fresh water; Enter first section reverse osmosis concentration, control pressure 3.5MPa, the dope that the control rate of recovery is 30%, the first section enter second section to be continued to concentrate, control pressure 4.5 MPa, and the control rate of recovery 30%, the dope that obtains goes sugaring, and the light liquid that obtains uses as boiler feedwater.Concentrated solution obtains refined sugar through evaporative crystallization, and the fresh water of film condensing device is through the supplementary feed of sterilization as pure water or conduct filtration.Described film condensing device is the combination of nanofiltration and reverse osmosis membrane, and membrane material is polyethersulfone, and form membrane is rolled film, and described nanofiltration membrane molecular weight cut-off is 150 ~ 250 dalton, and described reverse osmosis membrane is more than 99.0% to the standard ratio of desalinization of sodium-chlor.First section working pressure control is at 3.4MPa, and second section pressure-controlling is at 5.0Mpa, and temperature is controlled between 25 ℃, and every section filtration time was all controlled at 20 minutes.
Concrete outcome is as follows
Claims (10)
1. a sugarcane mixes clear juice treatment process, it is characterized in that the step of handling is as follows:
(1) mixes clear juice and enter first step ultrafiltration membrance filter, the clear liquid that filtration obtains enters second stage ultrafiltration membrance filter again, dope devaporation behind first step ultrafiltration membrance filter sugaring, the dope behind the ultrafiltration membrance filter of the second stage with mix clear juice merging and enter first step ultrafiltration membrance filter;
(2) the light liquid that obtains behind the ultrafiltration membrance filter of the second stage in the step (1) enters film condensing device and concentrates, and obtains concentrated solution and fresh water;
The molecular weight cut-off of described first step ultra-filtration membrane is 50000 ~ 100000 dalton, and the molecular weight cut-off of described second stage ultra-filtration membrane is 1000 ~ 20000 dalton.
2. a kind of sugarcane according to claim 1 mixes clear juice treatment process, it is characterized in that the clear juice of described mixing is cane milling juice and handles the purified juice that obtains and the mixed solution of filtered juice through clarification process.
3. a kind of sugarcane according to claim 1 mixes clear juice treatment process, molecular weight cut-off 50000 ~ 80000 dalton that it is characterized in that described first step ultra-filtration membrane, working pressure control is at 0.05 MPa ~ 0.5MPa, between 20 ~ 50 ℃ of the control temperature, filtration time≤30 minute, the pH control of feed liquid is between 6 ~ 8, and filtering the clear liquid colour that obtains is 300 ~ 700IU, hammer degree 12 ~ 20BX
0, simple purity 89% ~ 93%, turbidity 0.3 ~ 2NTU.
4. a kind of sugarcane according to claim 1 mixes clear juice treatment process, molecular weight cut-off 2000 ~ 10000 dalton that it is characterized in that described second stage ultra-filtration membrane, working pressure control is at 1.0MPa ~ 3.0MPa, between 20 ~ 40 ℃ of the control temperature, filtration time≤30 minute, the clear liquid colour that filtration obtains is 20 ~ 200IU, hammer degree 12 ~ 20BX
0, simple purity 91% ~ 95%, turbidity 0.05 ~ 0.5.
5. a kind of sugarcane according to claim 1 mixes clear juice treatment process, it is characterized in that described ultra-filtration membrane is tubular membrane or flat sheet membrane, and crossflow velocity is 1.5m/s ~ 6.0m/s, and membrane material is polyethersulfone, polyvinylidene difluoride (PVDF), tetrafluoroethylene or pottery.
6. a kind of sugarcane according to claim 1 mixes clear juice treatment process, it is characterized in that described film condensing device is the combination of nanofiltration membrane, reverse osmosis membrane or nanofiltration and reverse osmosis membrane, membrane material is polymeric amide, polyethersulfone or modified polyacrylonitrile, and membrane structure is rolled film or tubular membrane.
7. a kind of sugarcane according to claim 6 mixes clear juice treatment process, it is characterized in that described nanofiltration membrane molecular weight cut-off is 150 ~ 500 dalton, and described reverse osmosis membrane is 99.0% ~ 99.8% to the standard ratio of desalinization of sodium-chlor.
8. a kind of sugarcane according to claim 1 mixes clear juice treatment process, it is characterized in that described film condensing device, adopt two-piece design, first section working pressure control is at 2.0 ~ 4.0MPa, second section pressure-controlling is at 3.5 ~ 6.0Mpa, temperature control is between 25 ~ 45 ℃, and every section filtration time was all controlled at≤20 minutes.
9. a kind of sugarcane according to claim 1 mixes clear juice treatment process, it is characterized in that mixing clear juice through total time≤60 of described first step ultrafiltration, second stage ultrafiltration, film condensing device minute.
10. a kind of sugarcane according to claim 1 mixes clear juice treatment process, it is characterized in that described concentrated solution after film condensing device concentrates obtains refined sugar through evaporative crystallization, the fresh water of described film condensing device is through the supplementary feed of sterilization as pure water or conduct filtration.
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| CN104720071A (en) * | 2015-04-02 | 2015-06-24 | 广西大学 | Processing device for sugarcane juice solid drink |
| CN105603130A (en) * | 2015-10-28 | 2016-05-25 | 中国科学院过程工程研究所 | Apparatus and method for recovering residual sugar in process for producing sugar from sugarcane |
| CN106282419A (en) * | 2016-08-10 | 2017-01-04 | 云南省轻工业科学研究院 | A kind of Caulis Sacchari sinensis juice purification process in Closed Circulation in Sugar Production |
| CN106490421A (en) * | 2016-09-26 | 2017-03-15 | 合肥信达膜科技有限公司 | A kind of Juice clarification and concentration technology |
| CN107937628A (en) * | 2017-05-23 | 2018-04-20 | 中国科学院过程工程研究所 | The cane sugar manufacture system and its processing method that a kind of full constituent utilizes |
| CN108031289A (en) * | 2017-12-06 | 2018-05-15 | 四川美富特水务有限责任公司 | The cleaning method of sucrose liquid film concentration systems and the film concentration systems |
| CN115852065A (en) * | 2022-10-14 | 2023-03-28 | 广西新蜜技制糖有限责任公司 | Method for preparing white sugar by squeezing sugarcane |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104720071A (en) * | 2015-04-02 | 2015-06-24 | 广西大学 | Processing device for sugarcane juice solid drink |
| CN105603130A (en) * | 2015-10-28 | 2016-05-25 | 中国科学院过程工程研究所 | Apparatus and method for recovering residual sugar in process for producing sugar from sugarcane |
| WO2017071585A1 (en) * | 2015-10-28 | 2017-05-04 | 中国科学院过程工程研究所 | Apparatus and method for recovering residual sugar in cane sugar manufacturing process |
| AU2016347128B2 (en) * | 2015-10-28 | 2019-05-02 | Institute Of Process Engineering, Chinese Academy Of Sciences | Apparatus and method for recovering residual sugar in cane sugar manufacturing process |
| CN105603130B (en) * | 2015-10-28 | 2019-07-19 | 中国科学院过程工程研究所 | The recyclable device and method of residual sugar during a kind of cane sugar manufacture |
| CN106282419A (en) * | 2016-08-10 | 2017-01-04 | 云南省轻工业科学研究院 | A kind of Caulis Sacchari sinensis juice purification process in Closed Circulation in Sugar Production |
| CN106490421A (en) * | 2016-09-26 | 2017-03-15 | 合肥信达膜科技有限公司 | A kind of Juice clarification and concentration technology |
| CN107937628A (en) * | 2017-05-23 | 2018-04-20 | 中国科学院过程工程研究所 | The cane sugar manufacture system and its processing method that a kind of full constituent utilizes |
| WO2018214643A1 (en) * | 2017-05-23 | 2018-11-29 | 中国科学院过程工程研究所 | Sugar production system utilizing all components of sugarcane and treatment method thereof |
| AU2018273522B2 (en) * | 2017-05-23 | 2020-11-12 | Institute Of Process Engineering, Chinese Academy Of Sciences | Sugar production system utilizing all components of sugarcane and treatment method thereof |
| CN108031289A (en) * | 2017-12-06 | 2018-05-15 | 四川美富特水务有限责任公司 | The cleaning method of sucrose liquid film concentration systems and the film concentration systems |
| CN115852065A (en) * | 2022-10-14 | 2023-03-28 | 广西新蜜技制糖有限责任公司 | Method for preparing white sugar by squeezing sugarcane |
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Denomination of invention: A treatment method of sugarcane mixed clear juice Effective date of registration: 20220630 Granted publication date: 20140514 Pledgee: Hangzhou Qingchun sub branch of Guangfa Bank Co.,Ltd. Pledgor: HANGZHOU TIAN CHUANG ENVIRONMENTAL TECHNOLOGY Co.,Ltd. Registration number: Y2022330001189 |
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