CN103194545B - Method for treating sugarcane mixed clear juice - Google Patents
Method for treating sugarcane mixed clear juice Download PDFInfo
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- CN103194545B CN103194545B CN201310125432.0A CN201310125432A CN103194545B CN 103194545 B CN103194545 B CN 103194545B CN 201310125432 A CN201310125432 A CN 201310125432A CN 103194545 B CN103194545 B CN 103194545B
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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 of the mixed clear juice of a kind of sugarcane, relate in particular to the treatment process of the mixed clear juice of embrane method processing sugarcane.
Background technology
Sucrose is a kind of disaccharide, crystal white.Sucrose is photosynthetic primary product, is distributed widely in plant materials, and particularly in beet, sugarcane and fruit, content is high.Sucrose is the principal mode of plant storage, accumulation and transportation sugar.The raw material of sucrose is mainly sugarcane and beet.Sugarcane or beet are crushed with machine, collect syrup, after filtering, with lime treatment, removes impurity, then bleach with sulfurous gas; Treated syrup is boiled, pump the impurity sinking to the bottom, scrape off the foam on the face of floating to, then stop working and treat that syrup crystallization becomes sucrose.China is take sugarcane as raw material production sucrose is as main.Its technique is: sugarcane is first squeezed, and is then that sugarcane juice is clarified, then carries out evaporative process, then carries out crystallization operation, carries out sepn process after crystallization, is then dry, gets final product to obtain sucrose product finally by packing.
Wherein cane juice clarification, divides by the purification agent adding, and can be divided into sulfurous method and carbonatation process.Sulfurous method is to adopt the sulfurous gas of lime as main sanitising agent, after the pre-ash of mixed mixing juice, once heating, Sulphitation and Neutralization, second-heating, enter settling vessel, isolate juice and mud juice clearly, mud juice obtains filtered juice after filtration, after mixing with clear juice, be Mixed Clarified juice, Mixed Clarified juice obtains syrup through evaporation, and syrup stove drying, crystallization obtain sucrose.According to above-mentioned technique, the sucrose obtaining, can only meet the index of one-level in white sugar standard GB317-2006 or top grade, can not reach refining index, meanwhile, in the process of evaporation, consumes a large amount of steam.
Every physical and chemical index of GB317-2006 white sugar
Summary of the invention
The present invention is intended to overcome the deficiency in existing sugar refining technology, adopt membrane technique to process mixed clear juice, without stove drying, the sucrose quality index of producing can reach top grade, adopt the evaporation of membrane technique Substitute For Partial simultaneously, greatly reduce steam consumption, 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 background technology, a kind of mixed clear juice processing scheme take membrane technique as core is provided, reach the object of preparing high-quality sucrose, reducing steam consumption and recycle-water resource simultaneously.
Design: in order to reach purpose of design, the present invention, take the Mixed Clarified juice of cane milling as raw material, adopts 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 Mixed Clarified juice treatment process, is characterized in that the step of processing is as follows:
(1) Mixed Clarified juice enters first step ultrafiltration membrance filter, the clear liquid that filtration obtains enters second stage ultrafiltration membrance filter again, dope devaporation sugaring after first step ultrafiltration membrance filter, the dope after the ultrafiltration membrance filter of the second stage and Mixed Clarified juice merging enter first step ultrafiltration membrance filter;
(2) the light liquid obtaining after the ultrafiltration membrance filter of the second stage in 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 preferably 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 remove some first step ultrafiltration fail remove pigment and organic impurity.Membrane material can be polymeric amide, polyethersulfone or modified polyacrylonitrile, selects rolled film or tubular membrane.In this step, the rate of recovery is controlled at 15% ~ 90%, can design according to user's actual demand.
As preferably, the Mixed Clarified juice in above-mentioned a kind of sugarcane Mixed Clarified juice treatment process is the purified juice that obtains through clarification process processing of cane milling juice and the mixed solution of filtered juice.
As preferably, first step ultra-filtration membrane working pressure described in above-mentioned a kind of sugarcane Mixed Clarified juice treatment process is controlled at 0.05 MPa ~ 0.5MPa, between 20 ~ 50 ℃ of control temperature, filtration time≤30 minute, the pH of feed liquid is controlled 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, second stage ultra-filtration membrane working pressure described in above-mentioned a kind of sugarcane Mixed Clarified juice treatment process is controlled at 1.0MPa ~ 3.0MPa, controls between 20 ~ 40 ℃ of temperature filtration time≤30 minute, the clear liquid colour obtaining of filtering is 20 ~ 200IU, hammer degree 12 ~ 20BX
0, simple purity 91% ~ 95%, turbidity 0.05 ~ 0.5.
As preferably, the ultra-filtration membrane described in above-mentioned a kind of sugarcane Mixed Clarified juice treatment process 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.
As preferably, film condensing device described in above-mentioned a kind of sugarcane Mixed Clarified juice treatment process 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.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, film condensing device described in above-mentioned a kind of sugarcane Mixed Clarified juice treatment process, adopt two-piece design, the working pressure of first paragraph is controlled at 2.0 ~ 4.0MPa, second segment pressure-controlling is at 3.5 ~ 6.0Mpa, temperature is controlled between 25 ~ 45 ℃, and the filtration time of every section is all controlled at≤and 20 minutes.
As preferably, in above-mentioned a kind of sugarcane Mixed Clarified juice treatment process, mix total time≤60 minute of clear juice through described first step ultrafiltration, second stage ultrafiltration, film condensing device.
As preferably, the concentrated solution after film condensing device is concentrated described in above-mentioned a kind of sugarcane Mixed Clarified juice treatment process obtains refined sugar through evaporative crystallization, the fresh water of described film condensing device through sterilization as pure water or as the supplementary feed filtering.
Beneficial effect: the present invention can reduce energy consumption greatly, and the running cost of equipment is low, long service life, and the quality of product is greatly improved, and also level of automation is higher, more environmental protection.
Embodiment
Below enforcement of the present invention is illustrated:
Embodiment 1
Get Mixed Clarified 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 |
Described Mixed Clarified juice is the purified juice that obtains through clarification process processing of cane milling juice and the mixed solution of filtered juice.
Then above-mentioned Mixed Clarified juice is sent into first step ultra-filtration membrane, the molecular weight cut-off of ultra-filtration membrane is 50000 dalton, working pressure is controlled at 0.1MPa, control 25 ℃ of temperature, filtration time 24 minutes, the pH of feed liquid is controlled at 7, filters the clear liquid index obtaining and sees the following form, first step ultrafiltration is filtered, and controls the rate of recovery 60%; Dope devaporation sugaring after 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, control 24 ℃ of temperature, filtration time 30 minutes, filters the clear liquid index obtaining 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 obtaining after the ultrafiltration membrance filter of the second stage enters film condensing device and concentrates, and obtains concentrated solution and fresh water; Enter first paragraph reverse osmosis concentration, control pressure 3.0MPa, controls the rate of recovery 30%, and the dope of first paragraph enters second segment to be continued to concentrate, and control pressure 5.0 MPa, control the rate of recovery 30%, and the dope obtaining goes sugaring, and the light liquid obtaining uses as boiler feedwater.Concentrated solution obtains refined sugar through evaporative crystallization, and the fresh water of film condensing device is the supplementary feed as pure water or conduct filtration through sterilization.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.The working pressure of first paragraph is controlled at 2.4MPa, and second segment pressure-controlling is at 4.0Mpa, and temperature is controlled between 25 ℃, and the filtration time of every section is all controlled at 20 minutes.
In the present embodiment, indices 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 Mixed Clarified 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 |
Described Mixed Clarified juice is the purified juice that obtains through clarification process processing of cane milling juice and the mixed solution of filtered juice.
Then above-mentioned Mixed Clarified juice 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, control 30 ℃ of temperature, filtration time 15 minutes, the pH of feed liquid is controlled at 7, first step ultrafiltration is filtered, and controls the rate of recovery 70%; Dope devaporation sugaring after 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, controls 30 ℃ of 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 obtaining after the ultrafiltration membrance filter of the second stage enters film condensing device and concentrates, and obtains concentrated solution and fresh water; Enter first paragraph reverse osmosis concentration, control pressure 3.5MPa, controls the rate of recovery 30%, and the dope of first paragraph enters second segment to be continued to concentrate, and control pressure 4.5 MPa, control the rate of recovery 30%, and the dope obtaining goes sugaring, and the light liquid obtaining uses as boiler feedwater.Concentrated solution obtains refined sugar through evaporative crystallization, and the fresh water of film condensing device is the supplementary feed as pure water or conduct filtration through sterilization.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.The working pressure of first paragraph is controlled at 3.4MPa, and second segment pressure-controlling is at 5.0Mpa, and temperature is controlled between 25 ℃, and the filtration time of every section is all controlled at 20 minutes.
Concrete outcome is as follows
Claims (8)
1. a sugarcane Mixed Clarified juice treatment process, is characterized in that the step of processing is as follows:
(1) Mixed Clarified juice enters first step ultrafiltration membrance filter, the clear liquid that filtration obtains enters second stage ultrafiltration membrance filter again, dope devaporation sugaring after first step ultrafiltration membrance filter, the dope after the ultrafiltration membrance filter of the second stage and Mixed Clarified juice merging enter first step ultrafiltration membrance filter;
Molecular weight cut-off 50000～80000 dalton of first step ultra-filtration membrane, working pressure is controlled at 0.05MPa～0.5MPa, controls between 20～50 ℃ of temperature, filtration time≤30 minute, the pH of feed liquid is controlled between 6～8, and filtering the clear liquid colour obtaining is 300～700IU, hammer degree 12～20BX
0, simple purity 89%～93%, turbidity 0.3～2NTU;
(2) the light liquid obtaining after the ultrafiltration membrance filter of the second stage in step (1) enters film condensing device and concentrates, and obtains concentrated solution and fresh water;
Molecular weight cut-off 2000～10000 dalton of described second stage ultra-filtration membrane, working pressure is controlled at 1.0MPa～3.0MPa, controls between 20～40 ℃ of temperature, filtration time≤30 minute, filtering the clear liquid colour obtaining is 20～200IU, hammer degree 12～20BX
0, simple purity 91%～95%, turbidity 0.05～0.5.
2. a kind of sugarcane Mixed Clarified juice treatment process according to claim 1, is characterized in that described Mixed Clarified juice is the purified juice that obtains through clarification process processing of cane milling juice and the mixed solution of filtered juice.
3. a kind of sugarcane Mixed Clarified juice treatment process according to claim 1, 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.
4. a kind of sugarcane Mixed Clarified juice treatment process according to claim 1, 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.
5. a kind of sugarcane Mixed Clarified juice treatment process according to claim 4, 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.
6. a kind of sugarcane Mixed Clarified juice treatment process according to claim 1, it is characterized in that described film condensing device, adopt two-piece design, the working pressure of first paragraph is controlled at 2.0～4.0MPa, second segment pressure-controlling is at 3.5～6.0Mpa, temperature is controlled between 25～45 ℃, and the filtration time of every section is all controlled at≤and 20 minutes.
7. a kind of sugarcane Mixed Clarified juice treatment process according to claim 1, is characterized in that total time≤60 minute of mixed clear juice through described first step ultrafiltration, second stage ultrafiltration, film condensing device.
8. a kind of sugarcane Mixed Clarified juice treatment process according to claim 1, it is characterized in that the described concentrated solution after film condensing device is concentrated obtains refined sugar through evaporative crystallization, the fresh water of described film condensing device is the supplementary feed as pure water or conduct filtration through sterilization.
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| CN104720071B (en) * | 2015-04-02 | 2017-02-22 | 广西大学 | Processing device for sugarcane juice solid drink |
| 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 |
| 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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| CN1451765A (en) * | 2002-04-17 | 2003-10-29 | 凯能高科技工程（上海）有限公司 | Method for making sugar from sugar-cane by membrane separation |
| CN1673393A (en) * | 2004-03-24 | 2005-09-28 | 林坤华 | Physical method of clearing decolorizing and desalting for sugar mixed juice |
| CN1837376A (en) * | 2006-04-17 | 2006-09-27 | 叶丽娜 | Novel cleaning technique for production of high-quality sugar |
| CN102489155B (en) * | 2011-11-15 | 2014-02-26 | 广西大学 | Method for parallel production of nutrient sugar, flavor cane juice and feedstuff by multistage membranes |
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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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Date of cancellation: 20230629 Granted publication date: 20140514 Pledgee: Hangzhou Qingchun sub branch of Guangfa Bank Co.,Ltd. Pledgor: HANGZHOU TIAN CHUANG ENVIRONMENTAL TECHNOLOGY Co.,Ltd.|Zhejiang Yimo New Material Technology Co.,Ltd. Registration number: Y2022330001189 |