CN203139910U - Nanofiltration membrane system applied to fermentation liquor purification - Google Patents
Nanofiltration membrane system applied to fermentation liquor purification Download PDFInfo
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- CN203139910U CN203139910U CN 201320067041 CN201320067041U CN203139910U CN 203139910 U CN203139910 U CN 203139910U CN 201320067041 CN201320067041 CN 201320067041 CN 201320067041 U CN201320067041 U CN 201320067041U CN 203139910 U CN203139910 U CN 203139910U
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Abstract
The utility model provides a nanofiltration membrane system applied to fermentation liquor purification. The system comprises a micro-filtration membrane filter assembly and a concentration filter assembly which are arranged front and back, and the system is characterized in that at least one nanofiltration membrane filter assembly is additionally arranged in series between the micro-filtration membrane filter assembly and the concentration filter assembly; the nanofiltration membrane filter assembly comprises a first nanofiltration membrane device, a first stock solution tank, a feeding pump, a valve and relevant pipelines; a fermentation liquor adding hole and a cleaning fluid adding hole are formed in the top of the first stock solution tank; a discharging pipe mouth is formed in the bottom of the first stock solution tank; the fermentation liquor adding hole is connected to the nanofiltration membrane filter assembly of the previous process; the cleaning fluid adding hole is communicated with a cleaning fluid cleaning device; the discharging pipe mouth of the first stock solution tank is connected to a raw material inlet of the first nanofiltration membrane device through the feeding pump; a trapped fluid outlet returns to the first stock solution tank through the pipelines; and a filtrate outlet is connected to the next process. According to the system, the nanofiltration membrane technology is applied to fermentation liquor purification systems, so that the purity and the effect of the purification are improved.
Description
Technical field
The utility model relates to zymotic fluid purification technique field, specifically a kind of NF membrane system that is applied to the zymotic fluid purification.
Background technology
According to various physical arrangement phase chemistry character, generally film can be divided into following several base class: micro-filtration MF, ultrafiltration UF, reverse osmosis (RO), nanofiltration NF, electrodialysis ED etc.
Micro-filtration membrane is to be motive force with the differential static pressure, utilize the sieving actoion of mesh-like filter medium film to separate, micropore filtering film is uniform porous membrane, and thickness is generally between 90 ~ 150 μ m, filter particle diameter between 0.025 ~ l0 μ m, operating pressure is generally 0.01 ~ 0.1MPa.
The ultrafiltration membrance filter particle diameter is between micro-filtration and counter-infiltration, and about 5 ~ 10nm promotes down at the differential static pressure of 0.1 ~ 0.5MPa, holds back protein, enzyme equimolecular quantity greater than 500 big molecule and colloid, forms concentrate, reach solution purification, separate and concentrated purpose.
Counter-infiltration is the inverse process of process of osmosis, and motive force is pressure differential, namely by adding the pressure higher than osmotic pressure in liquid one side to be separated, makes the solvent in the stoste be penetrated into the another side of pellicle.The operation of counter-infiltration is pressed and is generally 1 ~ 10MPa, depends primarily on former water osmotic pressure.Counter-infiltration is mainly used in desalinization, brackish water desalination, pure water production etc., relates to industries such as municipal administration, electric power, chemical industry, medicine.
NF membrane is to develop on the multiple platform film basis of counter-infiltration the eighties in 20th century, is continuity and the development branch of ultralow pressure reverse osmosis technology.It is 0.1 ~ 1nm that NF membrane is held back particle diameter, and monovalent ion and small-molecule substance have higher transmittance, and (0.5 ~ 1MPa) is less for the operation pressure.Be mainly used in holding back multivalent ion and larger molecular organics, molecular cut off is between counter-infiltration and ultrafiltration.The numerous areas such as wastewater treatment that have been widely used in desalinization, pure water preparation, food industry, environmental protection at present.
Feed liquid is by the pressurization of pump in filter process, and feed liquid flows through along the surface of filter membrane with certain flow rate, does not see through film greater than the material molecule of retaining molecular weight and flows back to batch can, sees through film less than material or the molecule of retaining molecular weight, forms dislysate.So there are two outlets in the film system, the one, phegma (concentrate) outlet, another is the dislysate outlet.
It mainly is super/micro-filtration membrane that at present traditional clarification separates the film that adopts, because its material diameter that can hold back has a very wide distribution, be widely used in Separation of Solid and Liquid, sized molecules material separation, remove in the technical process such as pigment, product purification, water-oil separating.
Super/micro-filtration membrane is separated technical process such as the natural subsidence that can replace in the traditional handicraft, plate-frame filtering, vacuum drum, centrifuge separation, solvent extraction, resin purification, activated carbon decolorizing.
Yet there are no the NF membrane system that is applied in the chemical industry purifying technique.
The utility model content
In order to solve the deficiencies in the prior art, the utility model provides a kind of NF membrane system that zymotic fluid is purified that is applied to, and the NF membrane technology is applied in the zymotic fluid purification system, improves purity and the effect of purifying.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of NF membrane system that is applied to the zymotic fluid purification, the micro-filtrate membrane filtration assembly and the thickening filtration assembly that arrange before and after comprising, it is characterized in that, between described micro-filtrate membrane filtration group and thickening filtration assembly, in series increase at least one group of NF membrane filter assemblies, by the application of NF membrane, strengthen filter effect.
Described NF membrane filter assemblies comprises the first NF membrane device, first original fluid container, feed pump, valve and associated pipe, and the described first original fluid container top is provided with zymotic fluid and adds mouth and cleaning fluid interpolation mouth, and the bottom is provided with the discharging mouth of pipe; Described zymotic fluid adds the micro-filtrate membrane filtration group that mouth is connected to last operation, described cleaning fluid adds a mouthful connection cleaning fluid cleaning device, has material inlet on the described first NF membrane device, trapped fluid outlet and filtrate (liquid, the described first original fluid container discharging mouth of pipe is connected to the material inlet of the first NF membrane device by feed pump, described trapped fluid outlet turns back to first original fluid container by pipeline, and at described trapped fluid return pipeline the stock solution quality flowmeter is set, described stock solution quality flowmeter electrical connection regulation and control zymotic fluid adds the charging valve of mouth and cleaning fluid interpolation mouth, and described filtrate (liquid is connected to the thickening filtration assembly of subsequent processing.
Described thickening filtration assembly is formed identical with the NF membrane filter assemblies, described NF membrane filter assemblies comprises the second NF membrane device, second original fluid container, concentrating pump, valve and associated pipe, and add mouth at the filtrate (liquid of NF membrane filter assemblies and the trapped fluid outlet of thickening filtration assembly by the zymotic fluid that first triple valve is connected to flush distillation pipeline and thickening filtration assembly simultaneously, and the filtrate (liquid pipeline in first NF membrane device setting sees through the liquid mass flowmenter, be used for the conversion of control first triple valve, the filtrate (liquid of described thickening filtration assembly effluxes pure water; The concentrated solution outlet of described thickening filtration assembly is connected to the flush distillation pipeline of thickening filtration assembly simultaneously by second triple valve and the zymotic fluid of thickening filtration assembly adds mouth, and the concentrated solution outlet pipeline in the second NF membrane device arranges the concentrate mass flowmenter, is used for the conversion of control second triple valve.
Described zymotic fluid adds that mouth comprises that dense material adds mouthful and solvent or diluent adds mouthful, adds a mouthful outer setting cover vapor heat exchanger at described dense material, make dense material add mouthful temperature of interpolation zymotic fluid be 45 spend about.
The beneficial effects of the utility model are: adopt the NF membrane isolation technics to concentrate the advantage of purifying:
1), energy consumption is extremely low, saves the concentration process cost;
2), process do not have chemical reaction, no phase change, do not bring other impurity into and cause the decomposition sex change of product;
3) reach, at normal temperatures and concentrate purification purpose, the destruction of not causing active ingredient, technical process yield height;
4), can remove the salinity of product fully, reduce the product ash content, improve product purity;
5), materials such as the acid in the recyclable solution, alkali, alcohol, pigment;
6), the device structure concision and compact, floor space is little;
7), easy and simple to handle, can realize automated job, good stability, easy to maintenance.
Description of drawings
Fig. 1 is pipeline schematic diagram of the present utility model;
Fig. 2 is for seeing through directly discharging pattern of liquid;
Fig. 3 concentrates pattern for seeing through liquid;
Fig. 4 is concentrate discharging pattern;
Fig. 5 always schemes for the zymotic fluid purifying technique;
Among the figure: 11 first NF membrane devices, 12 first original fluid containers, 13 feed pumps, 14 stock solution quality flowmeters, 2 vapor heat exchangers, 3 cleaning fluid cleaning devices, 41 second NF membrane devices, 42 second original fluid containers, 43 concentrating pumps, 44 first triple valves, 45 see through the liquid mass flowmenter, 46 second triple valves, 47 concentrate mass flowmenters.
The specific embodiment
It is extremely shown in Figure 5 as Fig. 1,
The NF membrane isolation technics often is used to replace technical process such as freeze drying in the traditional handicraft, thin film evaporation, ion-exchange demineralization, resin technology concentrate, neutralization.The utility model is a kind of NF membrane system that is applied to the zymotic fluid purification that looks for another way, comprise micro-filtrate membrane filtration assembly and thickening filtration assembly, between described micro-filtrate membrane filtration assembly and thickening filtration assembly, in series increase at least one group of NF membrane filter assemblies.
Can carry out preliminary filtration to zymotic fluid by the micro-filtrate membrane filtration assembly, remove large granular impurity wherein, but small molecular weight impurities such as the pigment in the zymotic fluid can see through micro-filtration membrane and persist in the zymotic fluid, introduce NF membrane in order to remove pigment impurity wherein and filter concept, this does not have in zymotic fluid purification technique field.
The NF membrane filter assemblies comprises the first NF membrane device 11, first original fluid container 12, feed pump 13, valve and associated pipe, and first original fluid container, 12 tops are provided with zymotic fluid and add mouth and cleaning fluid interpolation mouth, and the bottom is provided with the discharging mouth of pipe; Zymotic fluid interpolation mouth wherein comprises that dense material adds mouth and solvent or diluent adds mouth, one cover vapor heat exchanger 2 outside adding mouth, dense material is set, making dense material add a mouthful temperature of adding zymotic fluid is about 45 degree, zymotic fluid adds the micro-filtrate membrane filtration group that mouth is connected to last operation, accepts to come from the zymotic fluid stoste of last operation.
Above-mentioned cleaning fluid adds a mouthful connection cleaning fluid cleaning device 3, the cleaning fluid cleaning device comprises pure water jar and chemicals jar, two jars by pump and pipeline, constituting CIP with micro-filtrate membrane filtration assembly, thickening filtration assembly and NF membrane filter assemblies cleans, see Fig. 5 for details, the CIP system is the abbreviation of Clean In Place, and original position is cleaned (on-line cleaning, cleaning on the spot).CIP cleans and does not namely decompose production equipment, and the automatic purging system of available simple operations method safety almost is introduced into all food again, and factories such as beverage and pharmacy belong to the prior art part, no longer auspicious stating.
Have material inlet, trapped fluid outlet and filtrate (liquid on the first NF membrane device 11, the discharging mouth of pipe of first original fluid container bottom is connected to the material inlet of the first NF membrane device by feed pump 13, the trapped fluid outlet turns back to first original fluid container 12 by pipeline, and at the trapped fluid return pipeline stock solution quality flowmeter 14 is set, stock solution quality flowmeter 14 electrical connection regulation and control zymotic fluids add the charging valve of mouth and cleaning fluid interpolation mouth, the keying of by-pass valve control, filtrate (liquid are connected to the thickening filtration assembly of subsequent processing.Nanofiltration is under the effect of pressure differential motive force, and salt and small-molecule substance see through NF membrane, and holds back a kind of liquid liquid separating method of macromolecular substances, claims low pressure reverse osmosis again.NF membrane molecular cut off scope is 200-1000MWCO, between ultrafiltration and counter-infiltration, is mainly used in the concentrated and purifying of macromolecular substances in the solution.Nanofiltration system adopts the mode of cross-flow filtration more.The cross-flow mode has been avoided the clogging that produces in the dead-end filtration process: the flow through surface of film of feed liquid, and liquid and small-molecule substance see through NF membrane under the effect of pressure, and insoluble substance and macromolecular substances then are trapped; Feed liquid has material that enough flow velocitys can hold back tunicle from the film sur-face peeling, continuously peels off the pollution level that has reduced film, thereby can keep higher film permeation flux in the long time.The cross-flow process has been avoided the situation that the dependence cake layer filters in dead-end filtration (as plate and frame filter press, drum-type vacuum filter) process simultaneously, separate to occur in film surface rather than the cake layer, thereby the filtrate quality is homogeneous and stable in whole process.
The thickening filtration assembly also is to adopt nanofiltration technique, described thickening filtration assembly and NF membrane filter assemblies are formed basic identical, focus on the annexation of pipeline, the NF membrane filter assemblies comprises the second NF membrane device 41, second original fluid container 42, concentrating pump 43, valve and associated pipe, and add mouth at the filtrate (liquid of NF membrane filter assemblies and the trapped fluid outlet of thickening filtration assembly by the zymotic fluid that first triple valve 44 is connected to flush distillation pipeline and thickening filtration assembly simultaneously, and the filtrate (liquid pipeline in first NF membrane device setting sees through liquid mass flowmenter 45, be used for the conversion of control first triple valve, the filtrate (liquid of thickening filtration assembly effluxes pure water; The concentrated solution outlet of thickening filtration assembly is connected to the flush distillation pipeline of thickening filtration assembly simultaneously by second triple valve 46 and the zymotic fluid of thickening filtration assembly adds mouth, and the concentrated solution outlet pipeline in the second NF membrane device arranges concentrate mass flowmenter 47, is used for the conversion of control second triple valve.
Have following several modes,
The one,, zymotic fluid sees through the liquid mass flowmenter and detects concentration above 3.5% o'clock by behind the NF membrane filter assemblies, and first triple valve transfers discharging to automatically to the flush distillation pipeline, and the NF membrane filter assemblies also keeps self circulation, normal operation; As Fig. 2.
The 2nd,, zymotic fluid detects concentration through the liquid mass flowmenter and is lower than at 3.5% o'clock by behind the NF membrane filter assemblies, and first triple valve transfers into second original fluid container automatically to, sees through liquid and circulates concentrated in the thickening filtration assembly; As Fig. 3.
The 3rd,, concentrate mass flowmenter detectable concentration reaches at 3.5% o'clock, and second triple valve transfers discharging to automatically to the flush distillation pipeline, as Fig. 4.
Embodiment recited above is described preferred embodiment of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; the relevant technical staff in the field all should expand as in the determined protection domain of the utility model claims various distortion of the present utility model and improvement.
Claims (4)
1. one kind is applied to the NF membrane system that zymotic fluid is purified, and the micro-filtrate membrane filtration assembly and the thickening filtration assembly that arrange before and after comprising is characterized in that, in series increase at least one group of NF membrane filter assemblies between described micro-filtrate membrane filtration group and thickening filtration assembly.
2. a kind of NF membrane system that zymotic fluid is purified that is applied to according to claim 1, it is characterized in that, described NF membrane filter assemblies comprises the first NF membrane device, first original fluid container, feed pump, valve and associated pipe, the described first original fluid container top is provided with zymotic fluid and adds mouth and cleaning fluid interpolation mouth, and the bottom is provided with the discharging mouth of pipe; Described zymotic fluid adds the micro-filtrate membrane filtration group that mouth is connected to last operation, described cleaning fluid adds a mouthful connection cleaning fluid cleaning device, has material inlet on the described first NF membrane device, trapped fluid outlet and filtrate (liquid, the described first original fluid container discharging mouth of pipe is connected to the material inlet of the first NF membrane device by feed pump, described trapped fluid outlet turns back to first original fluid container by pipeline, and at described trapped fluid return pipeline the stock solution quality flowmeter is set, described stock solution quality flowmeter electrical connection regulation and control zymotic fluid adds the charging valve of mouth and cleaning fluid interpolation mouth, and described filtrate (liquid is connected to the thickening filtration assembly of subsequent processing.
3. a kind of NF membrane system that zymotic fluid is purified that is applied to according to claim 2, it is characterized in that, described thickening filtration assembly is formed identical with the NF membrane filter assemblies, described NF membrane filter assemblies comprises the second NF membrane device, second original fluid container, concentrating pump, valve and associated pipe, and add mouth at the filtrate (liquid of NF membrane filter assemblies and the trapped fluid outlet of thickening filtration assembly by the zymotic fluid that first triple valve is connected to flush distillation pipeline and thickening filtration assembly simultaneously, and the filtrate (liquid pipeline in first NF membrane device setting sees through the liquid mass flowmenter, be used for the conversion of control first triple valve, the filtrate (liquid of described thickening filtration assembly effluxes pure water; The concentrated solution outlet of described thickening filtration assembly is connected to the flush distillation pipeline of thickening filtration assembly simultaneously by second triple valve and the zymotic fluid of thickening filtration assembly adds mouth, and the concentrated solution outlet pipeline in the second NF membrane device arranges the concentrate mass flowmenter, is used for the conversion of control second triple valve.
4. a kind of NF membrane system that zymotic fluid is purified that is applied to according to claim 2 is characterized in that, described zymotic fluid adds that mouth comprises that dense material adds mouthful and solvent or diluent adds mouthful, arranging one and overlapping vapor heat exchanger outside described dense material adds mouthful.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320067041 CN203139910U (en) | 2013-02-05 | 2013-02-05 | Nanofiltration membrane system applied to fermentation liquor purification |
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| CN 201320067041 CN203139910U (en) | 2013-02-05 | 2013-02-05 | Nanofiltration membrane system applied to fermentation liquor purification |
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| CN203139910U true CN203139910U (en) | 2013-08-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103127833A (en) * | 2013-02-05 | 2013-06-05 | 山东兆光色谱分离技术有限公司 | Nanofiltration membrane system applied to fermented liquid purification |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103127833A (en) * | 2013-02-05 | 2013-06-05 | 山东兆光色谱分离技术有限公司 | Nanofiltration membrane system applied to fermented liquid purification |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20220205 |
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| CF01 | Termination of patent right due to non-payment of annual fee |