CN104744561A - Nanofiltration membrane decoloring method - Google Patents
Nanofiltration membrane decoloring method Download PDFInfo
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- CN104744561A CN104744561A CN201310734839.3A CN201310734839A CN104744561A CN 104744561 A CN104744561 A CN 104744561A CN 201310734839 A CN201310734839 A CN 201310734839A CN 104744561 A CN104744561 A CN 104744561A
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- nanofiltration membrane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
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Abstract
The invention discloses a nanofiltration membrane decoloring method. A decoloring apparatus for realizing the method adopts a nanofiltration membrane device. The membrane assemblies of the nanofiltration membrane device are phi 4inch spiral membranes, eight membrane assemblies are connected in parallel in four rows, two membrane assemblies are connected in series, and the water output is 6.0t/h. A high pressure pump is a multistage centrifugal pump, the flow is 12.0m<3>, P is 2.0PMa, and the highest pressure can reach 3.0PMa. A system can process 10m<3> of a vegetable protein stock solution every batch, the stock solution is concentrated 50 times within 7h to the final volume of 200L, and a mother liquor passing through the high pressure pump returns to the nanofiltration membrane device, and is decolored. The nanofiltration membrane device realizes automatic control through a constant flow-constant pressure control system. After the device is powered on, constant flow operation is carried out according to a preset flow, and a constant pressure operation state is carried out through automatic switching when the pressure before the nanofiltration membrane is as large as a preset pressure. The non-uniformity of the compression and the contribution of the nanofiltration membrane is prevented, and the service life of the nanofiltration membrane is prolonged. The nanofiltration membrane decoloring method has the advantages of obvious improvement of the quality of vegetable protein products, environment pollution reduction, resource saving and production cost reduction.
Description
Technical field
The present invention relates to a kind of decoloring method of vegetable-protein, relate to a kind of method adopting nanofiltration membrane to remove pigment in vegetable-protein stoste and mother liquor specifically.
Background technology
The decoloration process that traditional vegetable-protein is taked in producing uses powdered carbon and particle charcoal (charcoal post) to decolour to the stoste of vegetable-protein and mother liquor mostly.Powdered activated carbon decoloring is usually used in the first step decolouring of stoste, as the pretreatment procedure that particle charcoal (charcoal post) decolouring is indispensable.Stoste after powdered carbon and particle charcoal (charcoal post) decolouring or mother liquor, for vacuum concentration, obtain finished product vegetable-protein through centrifugation, drying, screening.Powdered carbon, for once to use, causes the expense of production cost too high; Particle charcoal (charcoal post) regeneration of decolouring need consume a certain amount of hydrochloric acid, caustic soda, also will use a large amount of to wash post water simultaneously, and produces the low concentration wastewater of COD4000mg/L, poses a big pressure to environmental protection.Most of impurity band in charcoal is in use also entered feed liquid by powdered carbon, and the quality product after concentrating is affected to a certain extent.The periodic replacement of powdered carbon, the routine cleaning of particle charcoal (charcoal post) and replacing, cause that traditional decoloration process operating environment is poor, labour intensity is large.
Summary of the invention
The object of the invention is to solve production cost existing in traditional plant protein decolouring method too high, contaminate environment, operating environment is poor, labour intensity is large, affect the problem that product concentrates quality, providing one obviously can improve quality product, reduces environmental pollution, save energy, reduces the nanofiltration membrane decoloring method of production cost.
In order to achieve the above object, the technical solution used in the present invention is: in vegetable-protein production process, and its decoloration device adopts nano filter membrance device.The membrane module of described nano filter membrance device is Ф 4 inch spiral wound film, and parallel connection arranged by eight membrane modules four, and two membrane module series connection, water production rate is 6.0t/h.High-pressure pump is stage chamber pump, and flow is 12.0m
3/ h, P=2.0PMa, top pressure can reach 3.0PMa.The every batch processing 10m of system
3vegetable-protein stoste, in 7 hours, concentrate 50 times, final material volume is 200L, and the mother liquor after high-pressure pump returns nano filter membrance device and decolours.
Nano filter membrance device is controlled automatically by constant current-control system of invariable pressure device.According to flow and the pressure of setting, after device start, first carry out constant current operation by the flow of setting, when pressure before nanofiltration membrane arrives greatly setup pressure value, automatically switch to constant voltage operation state.Can prevent like this pressurized of nanofiltration membrane with exert oneself uneven, the work-ing life of nanofiltration membrane can be extended.
Constant Current Control System in described nanofiltration membrane constant current-control system of invariable pressure device become by PLC, frequency transformer, flow send indicating meter, flow director forms.By constant flux control system, can make nano filter membrance device under the flow of setting, keep the constant of nano filter membrance device transparent liquid amount by the automatic adjustment of frequency transformer.This both can ensure certain treatment capacity, can avoid the hypertonia at operation initial stage again and shorten work-ing life of nanofiltration membrane.
Control system of invariable pressure in described nanofiltration membrane constant current-control system of invariable pressure device is made up of PLC, frequency transformer, pressure unit, pressure controller.Pass through control system of invariable pressure, can make nano filter membrance device under the pressure of setting, constantly regulate pressure before nanofiltration membrane by the automatic adjustment of frequency transformer, avoid in thickening filtration hypertonia before film, ensure that nanofiltration membrane long-term stability is run, complete the concentration process of product smoothly.
The method adopting above-mentioned nano filter membrance device to carry out vegetable-protein stoste or mother liquor decolouring is achieved in that vegetable-protein stoste is delivered in nano filter membrance device through concentrate pump, nanofiltration membrane is by impurity removals such as the pigment in stoste, polysaccharide, enter concentrating unit again to concentrate, centrifugation is carried out again through high-pressure pump, mother liquor after separation turns back to again nano filter membrance device to carry out removing the impurity such as pigment, polysaccharide again, then enter drying installation through high-pressure pump centrifugation concentrated material out and carry out drying, then through screening plant uniformly particle be finished product.Last mother liquor after centrifugation enters mother liquor and fills with, and be then hydrolyzed, the water after filtration with certain temperature turns back to again lixiviate workshop.
The invention has the beneficial effects as follows: significantly improve quality product, decrease environmental pollution, saved resource, reduced production cost.
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Accompanying drawing explanation
Fig. 1, process flow diagram of the present invention.
In Fig. 1,1. stoste is filled with, 2. concentrate pump, 3. nano filter membrance device, 4. concentrating unit, 5. high-pressure pump, 6. drying installation, 7. screening plant, and 8. last mother liquor is filled with, 9. hydrolysis device.
Embodiment
The vegetable-protein stoste that stoste is filled with in (1) is sent in nanofiltration device (3) through concentrate pump (2), under the flow and pressure of setting, stoste removes the impurity such as pigment, polysaccharide by nanofiltration membrane, the feed liquid removing magazine enters concentrating unit (4) and concentrates, centrifugation is carried out again through high-pressure pump (5), isolated mother liquor gets back to again nano filter membrance device (3), isolated vegetable-protein xln enters in drying installation (6) and carries out drying, again through screening plant (7) uniformly finished product, carry out finished product packing.The mother liquor got back in nano filter membrance device (3) removes the impurity such as pigment, polysaccharide through nanofiltration membrane again together with stoste under the flow and pressure of setting, concentrates again, then carries out centrifugation through high-pressure pump (5), so circulate through concentrating unit (4).Enter into hydrolysis device (9) through high-pressure pump (5) centrifugation last mother liquor out through last mother liquor filling (8) to be hydrolyzed, the water after filtration with certain temperature turns back to lixiviate workshop again, and the residue filtered out is discharged, use as fertilizer through certain process.
Claims (4)
1. a nanofiltration membrane decoloring method, in vegetable-protein production process, its decoloration device adopts nano filter membrance device, it is characterized in that: the membrane module of nano filter membrance device is Ф 4 inch spiral wound film, parallel connection arranged by eight membrane modules four, two membrane module series connection, and water production rate is 6.0t/h, high-pressure pump is stage chamber pump, and flow is 12.0m
3/ h, P=2.0PMa, top pressure can reach 3.0Pma, the every batch processing 10m of system
3vegetable-protein stoste, in 7 hours, concentrate 50 times, final material volume is 200L, and the mother liquor after high-pressure pump returns nano filter membrance device and decolours.
2. nanofiltration membrane decoloring method according to claim 1, it is characterized in that: nano filter membrance device is controlled automatically by constant current-control system of invariable pressure device, according to flow and the pressure of setting, after device start, first carry out constant current operation by the flow of setting, when pressure before nanofiltration membrane arrives greatly setup pressure value, automatically switch to constant voltage operation state.
3. nanofiltration membrane constant current-control system of invariable pressure device according to claim 2, it is characterized in that: Constant Current Control System become by PLC, frequency transformer, flow send indicating meter, flow director forms, by constant flux control system, can make nano filter membrance device under the flow of setting, keep the constant of nano filter membrance device transparent liquid amount by the automatic adjustment of frequency transformer.
4. nanofiltration membrane constant current-control system of invariable pressure device according to claim 2, it is characterized in that: control system of invariable pressure is made up of PLC, frequency transformer, pressure unit, pressure controller, pass through control system of invariable pressure, can make nano filter membrance device under the pressure of setting, constantly regulate pressure before nanofiltration membrane by the automatic adjustment of frequency transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310734839.3A CN104744561A (en) | 2013-12-27 | 2013-12-27 | Nanofiltration membrane decoloring method |
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| CN201310734839.3A CN104744561A (en) | 2013-12-27 | 2013-12-27 | Nanofiltration membrane decoloring method |
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| CN104744561A true CN104744561A (en) | 2015-07-01 |
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| CN201310734839.3A Pending CN104744561A (en) | 2013-12-27 | 2013-12-27 | Nanofiltration membrane decoloring method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107803116A (en) * | 2017-11-16 | 2018-03-16 | 赢创特种化学（上海）有限公司 | The method based on film of plant wax decoloring |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101735087A (en) * | 2008-11-26 | 2010-06-16 | 德州华茂生物科技有限公司 | New sodium glutamate decoloring process |
| WO2012116703A1 (en) * | 2011-03-01 | 2012-09-07 | Københavns Universitet | A process for the manufacture of a product from a plant material |
-
2013
- 2013-12-27 CN CN201310734839.3A patent/CN104744561A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101735087A (en) * | 2008-11-26 | 2010-06-16 | 德州华茂生物科技有限公司 | New sodium glutamate decoloring process |
| WO2012116703A1 (en) * | 2011-03-01 | 2012-09-07 | Københavns Universitet | A process for the manufacture of a product from a plant material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107803116A (en) * | 2017-11-16 | 2018-03-16 | 赢创特种化学（上海）有限公司 | The method based on film of plant wax decoloring |
| WO2019096080A1 (en) * | 2017-11-16 | 2019-05-23 | Evonik Specialty Chemicals (Shanghai) Co., Ltd. | A membrane-based method for decolorizing vegetable wax |
| TWI758559B (en) * | 2017-11-16 | 2022-03-21 | 大陸商贏創特種化學（上海）有限公司 | A membrane-based method for decolorizing vegetable wax |
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Application publication date: 20150701 |
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