CN116474557A - Device for extracting itaconic acid through membrane - Google Patents
Device for extracting itaconic acid through membrane Download PDFInfo
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- CN116474557A CN116474557A CN202310476514.3A CN202310476514A CN116474557A CN 116474557 A CN116474557 A CN 116474557A CN 202310476514 A CN202310476514 A CN 202310476514A CN 116474557 A CN116474557 A CN 116474557A
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- membrane
- itaconic acid
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- filter
- reverse osmosis
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- 239000012528 membrane Substances 0.000 title claims abstract description 117
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 title claims abstract description 60
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 239000000919 ceramic Substances 0.000 claims abstract description 70
- 238000005374 membrane filtration Methods 0.000 claims abstract description 46
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 39
- 238000000855 fermentation Methods 0.000 claims abstract description 31
- 230000004151 fermentation Effects 0.000 claims abstract description 31
- 238000001728 nano-filtration Methods 0.000 claims abstract description 27
- 238000001914 filtration Methods 0.000 claims abstract description 26
- 238000002425 crystallisation Methods 0.000 claims abstract description 25
- 230000008025 crystallization Effects 0.000 claims abstract description 22
- 238000001802 infusion Methods 0.000 claims abstract description 19
- 238000012546 transfer Methods 0.000 claims abstract description 13
- 238000003860 storage Methods 0.000 claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims description 47
- 238000004140 cleaning Methods 0.000 claims description 40
- 238000007789 sealing Methods 0.000 claims description 26
- 239000012141 concentrate Substances 0.000 claims description 17
- 238000007599 discharging Methods 0.000 claims description 17
- 238000005406 washing Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 5
- 238000000502 dialysis Methods 0.000 claims description 2
- 239000006210 lotion Substances 0.000 claims 2
- 238000000409 membrane extraction Methods 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 16
- 239000000243 solution Substances 0.000 description 12
- 239000000047 product Substances 0.000 description 8
- 239000013078 crystal Substances 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 150000002772 monosaccharides Chemical class 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- WXUAQHNMJWJLTG-UHFFFAOYSA-N 2-methylbutanedioic acid Chemical compound OC(=O)C(C)CC(O)=O WXUAQHNMJWJLTG-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910001410 inorganic ion Inorganic materials 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000001124 (E)-prop-1-ene-1,2,3-tricarboxylic acid Substances 0.000 description 1
- 229940091181 aconitic acid Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 238000013375 chromatographic separation Methods 0.000 description 1
- GTZCVFVGUGFEME-IWQZZHSRSA-N cis-aconitic acid Chemical compound OC(=O)C\C(C(O)=O)=C\C(O)=O GTZCVFVGUGFEME-IWQZZHSRSA-N 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000005008 domestic process Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 239000010413 mother solution Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- GTZCVFVGUGFEME-UHFFFAOYSA-N trans-aconitic acid Natural products OC(=O)CC(C(O)=O)=CC(O)=O GTZCVFVGUGFEME-UHFFFAOYSA-N 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/58—Multistep processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/02—Inorganic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/02—Crystallisation from solutions
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/47—Separation; Purification; Stabilisation; Use of additives by solid-liquid treatment; by chemisorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/30—Mechanical cleaning, e.g. with brushes or scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/44—Specific cleaning apparatus
-
- 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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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Water Supply & Treatment (AREA)
- Inorganic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model relates to the technical field of itaconic acid preparation, and particularly discloses a device for extracting itaconic acid from itaconic acid fermentation liquor or waste liquor by using a membrane, which comprises a fermentation liquor storage tank, a ceramic membrane filtration unit, a nanofiltration membrane filtration unit, a reverse osmosis membrane concentration unit, a crystallization tank and a centrifugal drying device, wherein a first infusion tube is arranged between the fermentation liquor storage tank and the ceramic membrane filtration unit, a first transfer pump is arranged on the first infusion tube, a second infusion tube is arranged between a dialysate discharge end of the ceramic membrane filtration unit and the nanofiltration membrane filtration unit, and a second transfer pump is arranged on the second infusion tube; the device for extracting the itaconic acid by the membrane can ensure that the total yield of the itaconic acid can reach 93-94%, obviously improve the yield of the itaconic acid and reduce the production cost, can always keep a high-efficiency and stable filtering effect by improving the design of the ceramic membranes, is quick and convenient in rotary switching among a plurality of ceramic membranes, and can keep continuous and stable operation of the whole device for extracting the itaconic acid by the membrane.
Description
Technical Field
The utility model relates to the technical field of itaconic acid preparation, and particularly discloses a device for extracting itaconic acid from itaconic acid fermentation liquid or waste liquid by using a membrane.
Background
Itaconic acid is an unsaturated dibasic organic acid, also known as itaconic acid, aconitic acid or methylsuccinic acid. It is an important organic chemical raw material, and because of containing unsaturated double bond, it has active chemical property and extensive application field, and is an important raw material for chemical production and chemical synthesis industry, and can be extensively used in the industries of medicine, chemical fibre, cosmetics and artificial gem, etc..
There are few itaconic acid in nature, and the current methods for producing itaconic acid at home and abroad include fermentation method and chemical synthesis method, and most of them are used at home and abroad because the fermentation method has advantages over chemical synthesis method. The itaconic acid fermentation liquid has complex components and contains mycelium, protein, residual sugar, inorganic ions, metabolic products itaconic acid and the like. At present, methods for extracting itaconic acid from itaconic acid fermentation broth include a direct concentration crystallization method, an organic solvent extraction method, an ion exchange method, a chromatographic separation method, a poorly soluble salt precipitation method and the like, wherein the most common domestic method is the direct concentration crystallization method.
For example, the patent of application number CN2013206363207 discloses an energy-saving four-effect concentrating and crystallizing device for itaconic acid, which realizes the continuity of concentrating and crystallizing itaconic acid solution, raw material liquid continuously enters a preheater, and water is continuously evaporated through a first-effect, a second-effect, a third-effect and a fourth-effect heating evaporator, secondary steam separated by the first-effect separator enters the preheater or the next-effect heating evaporator to heat and evaporate materials, and crystals separated by the fourth-effect separator are continuously pumped by a crystal slurry pump, so that the processes of continuous feeding, simultaneous evaporating and concentrating and continuous taking out of crystals are formed, and a large amount of crystals can be formed in the fourth-effect separator, thereby improving productivity and product quality and equipment utilization rate. However, the direct concentration crystallization method of the crystallization device is used for leading the itaconic acid to have lower yield, higher cost, complex process flow, large amount of waste mother liquor and the like, so that the device for extracting the itaconic acid from the itaconic acid fermentation liquor or waste liquid by using the membrane is provided aiming at the defect that the traditional energy-saving four-effect concentration crystallization device for itaconic acid is used for directly concentrating and crystallizing the itaconic acid fermentation liquor, and adopts the membrane concentration crystallization technology to obtain high-quality itaconic acid products, thereby improving the yield of the itaconic acid, reducing the amount of waste liquid, recycling byproducts such as monosaccharides and the like and reducing the cost.
Disclosure of Invention
In order to solve the defect that the existing energy-saving four-effect itaconic acid concentrating and crystallizing device directly concentrates and crystallizes itaconic acid fermentation liquor, the utility model aims to provide a novel itaconic acid extracting device, and a film concentrating and crystallizing technology is adopted to obtain high-quality itaconic acid products, so that the yield of itaconic acid is improved, the waste liquid amount is reduced, byproducts such as monosaccharide and the like are recovered, and the cost is reduced.
The utility model is realized by the following technical scheme:
the utility model provides a device of itaconic acid is drawed to membrane, includes fermentation broth holding vessel, ceramic membrane filtration unit, receives filter membrane filtration unit, reverse osmosis membrane concentration unit, crystallization tank and centrifugal drying device, set up first transfer line between fermentation broth holding vessel and the feed end of ceramic membrane filtration unit, and be provided with first delivery pump on the first transfer line, set up the second transfer line between the dislysate discharge end of ceramic membrane filtration unit and the feed end of filter membrane filtration unit, be provided with the second delivery pump on the second transfer line, the concentrate discharge end of ceramic membrane filtration unit is provided with first top wash pipe, be provided with a top wash pipe on the first top wash pipe, be provided with the third transfer line between dislysate discharge end and the reverse osmosis membrane concentration unit of filter membrane filtration unit, be provided with the third delivery pump on the third transfer line, the concentrate discharge end of filter membrane filtration unit is provided with the second top wash pipe, the dislysate discharge end of reverse osmosis membrane concentration unit is provided with the top wash pipe that is connected with the second top wash pipe, be provided with between concentrate and the crystallization tank, be provided with between the crystallization tank and the centrifugal drying device.
As a first specific scheme of the scheme, the ceramic membrane filtering unit comprises a first filter outer shell and a ceramic membrane core, the ceramic membrane is installed inside the first filter outer shell, a first concentrated solution discharging pipe and a fermentation liquid feeding pipe are respectively arranged at the upper end and the lower end of the first filter outer shell, and a first dialysis liquid calandria is arranged at the right end of the side face of the first filter outer shell.
As the second concrete scheme of above-mentioned scheme, ceramic membrane filtration unit includes and strains jar and bottom sprag frame, the upper and lower end of the inner wall of straining jar all is provided with annular seal track, two all rotate in the annular seal track and be provided with the sealing plate, two be provided with two or more ceramic membranes between the sealing plate, strain and be provided with the drive assembly who is used for driving the sealing plate pivoted in annular seal track on the jar, strain the upper and lower both ends of jar and all be provided with the end shield that carries out sealed with same ceramic membrane upper and lower end, strain the outer disc upper and lower both ends of straining jar and be provided with washing liquid feed pipe and washing liquid calandria that are linked together with two end shields respectively, strain the upper and lower both ends of straining jar and be provided with first concentrate discharging pipe and zymotic fluid inlet pipe respectively, be located two strain the jar between the annular seal track and be provided with first dislysate calandria.
As a further arrangement of the scheme, the upper end of the filter cylinder is provided with a cleaning device which stretches into the end cover to clean the inner wall of the ceramic membrane filter hole.
As the concrete setting of above-mentioned scheme, cleaning device is including fixing the grudging post at straining a upper surface, be annular array form on the grudging post and be provided with a vertical lead screw and a plurality of vertical slide bar, just the tip of vertical lead screw is provided with the lead screw motor, be provided with in the grudging post and remove the seat, be provided with on the outer disc of removing the seat with vertical lead screw assorted nut piece and with vertical slide bar assorted direction slider, the upper end of removing the seat is provided with cleaning motor, cleaning motor's motor shaft lower extreme is provided with the driving gear, the peripheral meshing of driving gear has a plurality of driven gears, a plurality of all be connected with the cleaning rod on driven gear and the driving gear, the lower extreme setting of cleaning rod stretches into the clearance head in the end shield.
As the specific setting of above-mentioned scheme, drive assembly includes fixed mounting and strains the driving motor on the lateral surface, be provided with drive gear on driving motor's the motor shaft, one of them be provided with annular tooth's socket on the outer disc of sealing plate, drive gear stretches into annular seal track and annular tooth's socket and meshes the setting mutually.
As the concrete setting of above-mentioned scheme, receive filter membrane filtration unit includes second filter shell body and receives the filter membrane core, receive the filter membrane core and install the inside at second filter shell body, the upper and lower both ends of second filter shell body are provided with second concentrate discharging pipe and first inlet pipe respectively, the side right-hand member of second filter shell body is provided with the second dislysate calandria.
As the concrete setting of above-mentioned scheme, reverse osmosis membrane concentration unit includes third filter shell body and reverse osmosis membrane filter core, the inside at third filter shell body is installed to the reverse osmosis membrane filter core, the upper and lower both ends of third filter shell body are provided with third concentrate row material pipe and second inlet pipe respectively, the side left end of third filter shell body is provided with the third dislysate calandria.
As a specific setting of the scheme, the reverse osmosis membrane filter element is a two-stage reverse osmosis membrane filter element.
As the further setting of above-mentioned scheme, still include bottom plate and frame, the fixed upper surface that sets up at the bottom plate of frame, ceramic membrane filtration unit, nanofiltration membrane filtration unit, reverse osmosis membrane concentration unit set gradually in the frame from left to right.
Compared with the prior art, the utility model has the following beneficial effects:
1) The device for extracting the itaconic acid by the membrane disclosed by the utility model adopts a process of extracting the itaconic acid from itaconic acid fermentation liquid, mycelia are removed by a ceramic membrane, and the flux and the performance of a nanofiltration membrane can be protected by primary filtration of the ceramic membrane, so that the flux of the nanofiltration membrane is kept stable; after the solution is filtered by a nanofiltration membrane, the viscosity of the dialysate is reduced, so that the itaconic acid is easier to concentrate and crystallize; and then concentrating by a reverse osmosis membrane, wherein the concentrated solution can be rapidly crystallized and dried to obtain an itaconic acid finished product, and the dialyzate can be used as top washing water, so that the discharge of waste liquid is reduced, and the cost of diluting by using ultrapure water is saved. The itaconic acid finished product obtained after cooling and crystallizing is white crystal, the total yield of the itaconic acid can reach 93% -94%, compared with the existing technology, the yield is obviously improved, the production cost is reduced, and the waste liquid obtained by the technology contains high-concentration monosaccharide and can be used as the raw material for fermenting other products, so that the waste liquid emission is reduced.
2) The utility model further carries out improved design on the ceramic membrane filtering unit, realizes fixed-angle rotation of the sealing plate by utilizing the action of the driving component, and then realizes position switching of a plurality of ceramic membranes between the put-in-use state and the cleaning standby state in the rotating process of the sealing plate; when the filtration effect of ceramic membrane drops, filtration pressure increases, rotate this ceramic membrane between upper and lower two end shields, originally wash reserve ceramic membrane at this moment and can put into use, then can also utilize cleaning device to scrub the filtration pore in the ceramic membrane in the in-process that uses the washing liquid to effectively get rid of the impurity on ceramic membrane filtration pore surface, make it can remain high-efficient, stable filter effect all the time, and rotatory switching between a plurality of ceramic membranes is quick, convenient moreover, can keep whole membrane to draw the continuous steady operation of itaconic acid device.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a first angular perspective structure of the present utility model;
FIG. 2 is a schematic view of a second angle perspective structure of the present utility model;
FIG. 3 is a schematic perspective view of a ceramic membrane filtration unit in example 1 of the present utility model;
FIG. 4 is a schematic perspective view of a nanofiltration membrane filtration unit according to the present utility model;
FIG. 5 is a schematic perspective view of a reverse osmosis membrane concentration unit according to the present utility model;
FIG. 6 is a schematic view showing a first angular perspective structure of a ceramic membrane filtration unit in embodiment 2 of the present utility model;
FIG. 7 is a schematic view showing a second angle perspective structure of the ceramic membrane filtration unit in embodiment 2 of the present utility model;
FIG. 8 is a perspective cross-sectional view of a filter cartridge of example 2 of the present utility model;
FIG. 9 is a schematic view showing the three-dimensional structure of a sealing plate, a ceramic film, etc. in embodiment 2 of the present utility model;
FIG. 10 is a schematic plan view of the inside of the filter cartridge of example 2 of the present utility model;
fig. 11 is a schematic perspective view of a cleaning device in embodiment 2 of the present utility model.
Detailed Description
In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail with reference to fig. 1 to 11 in conjunction with examples.
Example 1
Embodiment 1 discloses a device for extracting itaconic acid through a membrane, and referring to fig. 1 and 2, the main body of the device comprises a fermentation liquor storage tank 1, a ceramic membrane filtration unit 2, a nanofiltration membrane filtration unit 3, a reverse osmosis membrane concentration unit 4, a crystallization tank 5, a centrifugal drying device 6, a bottom plate 8 and a frame 9, wherein the frame 9 is fixedly arranged on the upper surface of the bottom plate 8, and then the ceramic membrane filtration unit 2, the nanofiltration membrane filtration unit 3 and the reverse osmosis membrane concentration unit 4 are sequentially arranged in the frame 9 from left to right for fixation.
A first transfer line 200 is provided between the fermentation broth storage tank 1 and the feed end of the ceramic membrane filtration unit 2, and a first transfer pump 201 is provided on the first transfer line 200. A second infusion tube 300 is arranged between the dialysate discharging end of the ceramic membrane filtration unit 2 and the feeding end of the nanofiltration membrane filtration unit 3, a second delivery pump 301 is arranged on the second infusion tube 300, then a first top washing tube 202 is arranged at the concentrate discharging end of the ceramic membrane filtration unit 2, and a top washing liquid feeding tube 203 is arranged on the first top washing tube 202.
A third infusion tube 400 is arranged between the dialysate discharge end of the nanofiltration membrane filtration unit 3 and the reverse osmosis membrane concentration unit 4, a third delivery pump 401 is arranged on the third infusion tube 400, and a second top washing tube 402 is arranged at the concentrate discharge end of the nanofiltration membrane filtration unit 3.
A top washing liquid communicating pipe 403 connected with the second top washing pipe 402 is arranged at the dialysate discharging end of the reverse osmosis membrane concentration unit 4, a fourth infusion pipe 500 is arranged between the concentrate discharging end of the reverse osmosis membrane concentration unit 4 and the crystallization tank 5, a crystallization material conveying pipe 501 is arranged between the lower end of the crystallization tank 5 and the centrifugal drying device 6, a liquid return pipe 502 is arranged between the crystallization tank 5 and the fermentation liquid storage tank 1, and a liquid return pump 503 is arranged on the liquid return pipe 502.
In the specific design process of this embodiment 1, the ceramic membrane filtration unit 2, the nanofiltration membrane filtration unit 3 and the reverse osmosis membrane concentration unit 4 can refer to fig. 3, fig. 4 and fig. 5, where the ceramic membrane filtration unit 2 includes a first filter outer shell 21 and a ceramic membrane core 22, the ceramic membrane 22 is installed inside the first filter outer shell 21, the upper and lower ends of the first filter outer shell 21 are respectively provided with a first concentrate discharging pipe 23 and a fermentation liquor feeding pipe 24, and the right end of the side surface of the first filter outer shell 21 is provided with a first dialysate drain pipe 25.
The nanofiltration membrane filtration unit 3 comprises a second filter outer shell 31 and a nanofiltration membrane core 32, wherein the nanofiltration membrane core 32 is arranged inside the second filter outer shell 31, the upper end and the lower end of the second filter outer shell 31 are respectively provided with a second concentrated solution discharging pipe 33 and a first feeding pipe 34, and the right end of the side face of the second filter outer shell 31 is provided with a second dialysate discharging pipe 35.
The reverse osmosis membrane concentration unit 4 comprises a third filter outer shell 41 and a reverse osmosis membrane filter element 42, wherein the reverse osmosis membrane filter element 42 is a two-stage reverse osmosis membrane filter element, the reverse osmosis membrane filter element 42 is arranged in the third filter outer shell 41, a third concentrated solution discharge pipe 43 and a second feed pipe 44 are respectively arranged at the upper end and the lower end of the third filter outer shell 41, and a third dialysate discharge pipe 35 is arranged at the left end of the side surface of the third filter outer shell 41.
In the operation process of the device for extracting itaconic acid by using the membrane disclosed in this embodiment 1, itaconic acid fermentation liquid in the fermentation liquid storage tank 1 is sent to the ceramic membrane filtration unit 2 by the action of the first infusion tube 200 and the first transfer pump 201, and then the itaconic acid fermentation liquid is filtered by the ceramic membrane filtration unit 2, mycelium in the itaconic acid fermentation liquid is removed by ceramic membrane filtration, and impurities such as macromolecular saccharides, colloid and the like are partially trapped.
Meanwhile, the filtered 1# concentrated solution is subjected to top washing and discharged, and then the filtered 1# dialyzate is conveyed to a nanofiltration membrane filtering unit 3 by a second infusion tube 300 and a second conveying pump 301 for secondary filtering, the average molecular weight cut-off (ten thousand daltons) of nanofiltration membranes in the nanofiltration membrane filtering unit 3 is 200-500, and impurities such as residual sugar, protein, inorganic ions and the like in the liquid are removed through the nanofiltration membranes, so that 2# dialyzate and 2# concentrated solution are obtained.
Then, the 3# dialysate obtained in the reverse osmosis membrane concentration unit 4 is subjected to top washing, and is discharged after top washing, and then the 2# dialysate is sent to the reverse osmosis membrane concentration unit 4 through the third infusion tube 400 and the third delivery pump 401, and the liquid is concentrated through the reverse osmosis membrane in the reverse osmosis membrane concentration unit 4 to obtain a concentrated solution. And finally, delivering the concentrated solution to a crystallization tank 5 through a fourth infusion tube 500 for cooling crystallization, delivering the cooled crystallization material to a centrifugal drying device 6 for drying to obtain an itaconic acid product, and simultaneously, enabling mother solution in the crystallization tank 5 to enter the fermentation liquor storage tank 1 again for recycling under the action of a liquid return tube 502 and a liquid return pump 503.
Example 2
Example 2 discloses a device for extracting itaconic acid from a membrane, which is based on the technical scheme in example 1 and is designed to improve a ceramic membrane filtration unit 2, and the same points of example 2 as those of example 1 are not explained again, and the difference is referred to in fig. 6 to 10.
The ceramic membrane filtration unit 2 of this embodiment 2 includes a filter cartridge 101 and a bottom bracket 102, and the filter cartridge 101 is fixedly disposed by the bottom bracket 102. Annular seal rails 103 are provided at the upper and lower ends of the inner wall of the filter cartridge 101, and sealing plates 104 are rotatably provided in both the annular seal rails 103. Meanwhile, there are at least two ceramic membranes 105 provided between the two sealing plates 104, and three of the ceramic membranes 105 in this illustration are provided (two of them are put into filtration use, and the other one is cleaned for later use). A driving assembly 106 for driving the sealing plates 104 to rotate in the annular sealing track 103 is arranged on the filter cylinder 101, the driving assembly 106 comprises a driving motor 1061 fixedly arranged on the outer side surface of the filter cylinder 101 when the filter cylinder is specifically arranged, a driving gear 1062 is arranged on a motor shaft of the driving motor 1061, an annular tooth slot 1041 is arranged on the outer circular surface of one sealing plate 104, and then the driving gear 1062 extends into the annular sealing track 103 to be meshed with the annular tooth slot 1041. The above-mentioned power input through driving motor 1061, then through the meshing transmission between driving gear 1062 and annular tooth slot 1041, can realize the fixed angle rotation of sealing plate 104 and ceramic membrane 105 to switch different ceramic membranes 105 and put into the state of use.
End caps 107 sealing the upper and lower ends of the same ceramic membrane 105 are provided at both the upper and lower ends of the filter cartridge 101, and the ports of the end caps 107 are sealed and bonded to the surface of the sealing plate 104. A cleaning liquid inlet pipe 108 and a cleaning liquid drain pipe 109, which are connected to the two end caps 107, are provided at the upper and lower ends of the outer circumferential surface of the filter cartridge 101, respectively. Through the above structural design, when the surface of the filter hole is covered with a layer of impurities after the ceramic membrane 105 runs for a long time, the filtering effect is reduced, and the filtering pressure is increased, at this time, the ceramic membrane 105 is rotated between the two end covers 107 through the driving component 106, then the cleaning liquid is injected through the cleaning liquid inlet pipe 108, and the cleaning liquid can wash out the surface impurities when flowing through the filter hole of the ceramic membrane 105, and then the cleaning liquid is discharged together through the cleaning liquid drain pipe 109.
In addition, in order to further improve the cleaning effect of the filter holes of the ceramic membrane 105 during standby, the cleaning device 7 extending into the end cover 107 to clean the inner walls of the filter holes of the ceramic membrane 105 is further provided at the upper end of the filter cartridge 101 in this embodiment 2. The specific cleaning device 7 refers to fig. 6, 7 and 11, and comprises a vertical frame 701 fixed on the upper surface of the filter cylinder 101, wherein a vertical screw rod 702 and a plurality of vertical sliding rods 703 are arranged on the vertical frame 701 in an annular array shape, and a screw rod motor 704 is arranged at the end part of the vertical screw rod 702. Then, a movable seat 705 is arranged in the vertical frame 701, a nut block matched with the vertical screw rod 702 is arranged on the outer circular surface of the movable seat 705, and a guide sliding block matched with the vertical sliding rod 703 is arranged at the same time. A cleaning motor 706 is arranged at the upper end of the movable seat 705, a driving gear 707 is arranged at the lower end of a motor shaft of the cleaning motor 706, a plurality of driven gears 708 are meshed with the periphery of the driving gear 707, cleaning rods 709 are connected to the driven gears 708 and the driving gear 707, and a cleaning head 710 extending into the end cover 107 is arranged at the lower end of the cleaning rod 709. The structural design of the cleaning device 7 can drive all the cleaning rods 709 to rotate through one cleaning motor 706, and then the cleaning rods 709 and the cleaning heads 710 can move up and down along the filter holes of the ceramic membranes 105 by utilizing the transmission function between the vertical screw rods 702 and the nut blocks, so that the efficient cleaning of the inner walls of the filter holes of the ceramic membranes 105 is realized, and the cleaned ceramic membranes 105 can be switched to the use site for efficient filtering treatment.
Finally, in the embodiment 2, a first concentrate discharging pipe 23 and a fermentation liquid feeding pipe 24 are respectively arranged at the upper and lower ends of the filter cartridge 101, and then a first dialysate discharging pipe 25 is also arranged on the filter cartridge 101 between the two annular sealing rails 103.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. The device for extracting itaconic acid through the membrane is characterized by comprising a fermentation liquor storage tank (1), a ceramic membrane filtering unit (2), a nanofiltration membrane filtering unit (3), a reverse osmosis membrane concentration unit (4), a crystallization tank (5) and a centrifugal drying device (6), wherein a first infusion tube (200) is arranged between the fermentation liquor storage tank (1) and the feeding end of the ceramic membrane filtering unit (2), a first delivery pump (201) is arranged on the first infusion tube (200), a second infusion tube (300) is arranged between the dialysate discharging end of the ceramic membrane filtering unit (2) and the feeding end of the nanofiltration membrane filtering unit (3), a second delivery pump (301) is arranged on the second infusion tube (300), a first top washing tube (202) is arranged at the concentrate discharging end of the ceramic membrane filtering unit (2), a top washing liquid feeding tube (203) is arranged on the first top washing tube (202), a third infusion tube (400) is arranged between the dialysate discharging end of the nanofiltration membrane filtering unit (3) and the reverse osmosis membrane concentration unit (4), a third infusion tube (400) is arranged at the third delivery tube (400), a top washing tube (402) is arranged at the third delivery end of the third delivery tube (401), the utility model discloses a reverse osmosis membrane concentration unit, including reverse osmosis membrane concentration unit (4), crystallization tank (5) and fermentation liquor storage tank (1), the dialysate discharge end of reverse osmosis membrane concentration unit (4) is provided with top lotion communicating pipe (403) that are connected with second top lotion pipe (402), be provided with fourth transfer line (500) between concentrate discharge end and crystallization tank (5) of reverse osmosis membrane concentration unit, be provided with crystallization material conveyer pipe (501) between the lower extreme of crystallization tank (5) and centrifugal drying device (6), be provided with back liquid pipe (502) between crystallization tank (5) and fermentation liquor holding vessel (1), and be provided with back liquid pump (503) on back liquid pipe (502).
2. The device for extracting itaconic acid through a membrane according to claim 1, characterized in that the ceramic membrane filtration unit (2) comprises a first filter outer shell (21) and a ceramic membrane core (22), the ceramic membrane (22) is installed inside the first filter outer shell (21), a first concentrated solution discharging pipe (23) and a fermentation solution feeding pipe (24) are respectively arranged at the upper end and the lower end of the first filter outer shell (21), and a first dialyzate calandria (25) is arranged at the right end of the side face of the first filter outer shell (21).
3. The device for extracting itaconic acid from a membrane according to claim 1, wherein the ceramic membrane filtration unit (2) comprises a filtration cartridge (101) and a bottom supporting frame (102), annular sealing rails (103) are respectively arranged at the upper end and the lower end of the inner wall of the filtration cartridge (101), sealing plates (104) are respectively arranged in the annular sealing rails (103) in a rotating mode, at least two ceramic membranes (105) are arranged between the sealing plates (104), a driving assembly (106) for driving the sealing plates (104) to rotate in the annular sealing rails (103) is arranged on the filtration cartridge (101), end covers (107) for sealing the upper end and the lower end of the same ceramic membrane (105) are respectively arranged at the upper end and the lower end of the outer circular surface of the filtration cartridge (101), a cleaning liquid inlet pipe (108) and a cleaning liquid outlet pipe (109) which are respectively communicated with the two end covers (107), a first concentrated liquid outlet pipe (23) and a fermentation liquid (24) are respectively arranged at the upper end and the lower end of the filtration cartridge (101), and a dialysis liquid (25) is arranged between the two annular inlet pipes (103).
4. A device for extracting itaconic acid from a membrane according to claim 3, characterized in that the upper end of the filter cartridge (101) is provided with cleaning means (7) which extend into the end cap (107) to clean the inner wall of the filter aperture of the ceramic membrane (105).
5. The device for extracting itaconic acid from a film according to claim 4, wherein the cleaning device (7) comprises a vertical frame (701) fixed on the upper surface of the filter cartridge (101), a vertical screw rod (702) and a plurality of vertical sliding rods (703) are arranged on the vertical frame (701) in a ring array shape, screw rod motors (704) are arranged at the ends of the vertical screw rod (702), a movable seat (705) is arranged in the vertical frame (701), nut blocks matched with the vertical screw rod (702) and guide sliding blocks matched with the vertical sliding rods (703) are arranged on the outer circular surface of the movable seat (705), a cleaning motor (706) is arranged at the upper end of the movable seat (705), a driving gear (707) is arranged at the lower end of a motor shaft of the cleaning motor (706), a plurality of driven gears (708) are meshed with the periphery of the driving gear (707), cleaning rods (709) are connected to the driven gears (708) and the driving gears (707), and the lower ends of the cleaning rods (709) are provided with cleaning heads (710) extending into the cleaning heads (107).
6. A device for extracting itaconic acid from a film according to claim 3, wherein the driving assembly (106) comprises a driving motor (1061) fixedly installed on the outer side surface of the filter cartridge (101), a driving gear (1062) is arranged on a motor shaft of the driving motor (1061), an annular tooth space (1041) is arranged on the outer circumferential surface of one sealing plate (104), and the driving gear (1062) extends into the annular sealing track (103) to be meshed with the annular tooth space (1041).
7. The device for extracting itaconic acid through a membrane according to any one of claims 2 to 6, characterized in that said nanofiltration membrane filtration unit (3) comprises a second filter outer shell (31) and a nanofiltration membrane core (32), said nanofiltration membrane core (32) is installed inside the second filter outer shell (31), a second concentrate discharging pipe (33) and a first feeding pipe (34) are respectively provided at the upper and lower ends of said second filter outer shell (31), and a second dialysate drain pipe (35) is provided at the right side end of said second filter outer shell (31).
8. The device for extracting itaconic acid through a membrane according to any one of claims 2 to 6, wherein said reverse osmosis membrane concentration unit (4) comprises a third filter outer case (41) and a reverse osmosis membrane filter element (42), said reverse osmosis membrane filter element (42) is installed inside said third filter outer case (41), a third concentrate discharge pipe (43) and a second feed pipe (44) are respectively provided at the upper and lower ends of said third filter outer case (41), and a third dialysate discharge pipe (35) is provided at the left end of the side surface of said third filter outer case (41).
9. The apparatus for membrane extraction of itaconic acid according to claim 8, wherein said reverse osmosis membrane cartridge (42) is a two-stage reverse osmosis membrane cartridge.
10. The device for extracting itaconic acid through the membrane according to claim 1, further comprising a bottom plate (8) and a frame (9), wherein the frame (9) is fixedly arranged on the upper surface of the bottom plate (8), and the ceramic membrane filtration unit (2), the nanofiltration membrane filtration unit (3) and the reverse osmosis membrane concentration unit (4) are sequentially arranged in the frame (9) from left to right.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310476514.3A CN116474557A (en) | 2023-04-27 | 2023-04-27 | Device for extracting itaconic acid through membrane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310476514.3A CN116474557A (en) | 2023-04-27 | 2023-04-27 | Device for extracting itaconic acid through membrane |
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| CN116474557A true CN116474557A (en) | 2023-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310476514.3A Pending CN116474557A (en) | 2023-04-27 | 2023-04-27 | Device for extracting itaconic acid through membrane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117701362A (en) * | 2024-01-31 | 2024-03-15 | 通辽市圣达生物工程有限公司 | Equipment for extracting nisin from lactococcus lactis fermentation liquor |
-
2023
- 2023-04-27 CN CN202310476514.3A patent/CN116474557A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117701362A (en) * | 2024-01-31 | 2024-03-15 | 通辽市圣达生物工程有限公司 | Equipment for extracting nisin from lactococcus lactis fermentation liquor |
| CN117701362B (en) * | 2024-01-31 | 2024-04-23 | 通辽市圣达生物工程有限公司 | Equipment for extracting nisin from lactococcus lactis fermentation liquor |
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