CN203159517U - Dewatering and preconcentration system of gelatin for membrane filtration - Google Patents
Dewatering and preconcentration system of gelatin for membrane filtration Download PDFInfo
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- CN203159517U CN203159517U CN2013200346975U CN201320034697U CN203159517U CN 203159517 U CN203159517 U CN 203159517U CN 2013200346975 U CN2013200346975 U CN 2013200346975U CN 201320034697 U CN201320034697 U CN 201320034697U CN 203159517 U CN203159517 U CN 203159517U
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model discloses a dewatering and preconcentration system of gelatin for membrane filtration. The dewatering and preconcentration system comprises a primary membrane filtration system and an intermediate membrane filtration system, wherein the primary membrane filtration system comprises a dilute glue solution storage tank, a feeding pump, a filter and a primary membrane filtration component; and the intermediate membrane filtration system comprises a concentrated glue solution storage tank, a feeding pump, a filter and an intermediate membrane filtration component. The primary membrane filtration component and the intermediate membrane filtration component comprise more than two membrane groups respectively and are used for carrying out graded dewatering and concentration of the gelatin solution. Since the steam is not needed for heating, the dewatering and preconcentration system disclosed by the utility model has the advantages that a vacuum evaporator can be completely replaced for carrying out dewatering and concentration on the gelatin solution, not only is the production cost of gelatin effectively reduced, but also the effects of saving energy, reducing emission and reducing the air pollution and the environmental pollution are very obvious, simultaneously the influence of long-time heating in the evaporation process on the gelatin is reduced, the loss of the physical performances of the gelatin is relatively reduced and the jelly strength and the viscosity of the gelatin are improved.
Description
Technical field
The utility model belongs to the gelatin concentration systems, is specifically related to a kind of membrane filtration gelatin dehydration preconcentration technique.
Background technology
According to traditional manufacturing of gelatin technology, gelatin solution about the 4%-6% that extracts from extacting glue pot is through the moisture evaporation of vacuum-evaporator with gelatin solution, the concentrated solution that obtains concentration and be 26%-35% is used for condensation and is shaped, and becomes water content by drier then and is about 12% commodity gelatin.
Adopt vacuum-evaporator to concentrate gelatin solution, need the thermal source with the Boiler Steam heating, calculate by theoretical, as select single-effect evaporator for use, every evaporation 1kg water need consume the steam of 1.1kg; Adopt double-effect evaporator, every evaporation 1kg water need consume the steam of 0.55kg; Adopt 3 single-effect evaporators, the water of every evaporation 1kg need consume the steam of 0.4kg.Domestic manufacturing of gelatin enterprise, more employing 2 is imitated or 3 effect vacuum-evaporators.A factory that produces 2000 tons of gelatin per year carries out concentrating of glue as imitating vacuum-evaporator with one 3, and 1 ton of gelatin consumption of every production, is amounted to and consumed 1.6 tons of fire coals near 9 tons at the steam of vapo(u)rization system.
Because gelatin is a kind of material of thermo-sensitivity, the viscosity of its solution is directly proportional with concentration, heat transfer coefficient and concentration are inversely proportional to, along with gelatin solution the improving constantly of concentration in vapo(u)rization system, its speed of circulation can become more and more slower and heated time is prolonged, and very easily causes physicals as freezing the reduction of power and viscosity.
The utility model content
The purpose of this utility model provides a kind of membrane filtration gelatin dehydration preconcentration technique, replace the gelatin vacuum-evaporator, not only effectively saved the consumption of steam, when greatly reducing production costs, owing to reduced the influence that gelatin is heated for a long time in evaporative process, that can improve gelatin freezes power and viscosity.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of membrane filtration gelatin dehydration preconcentration technique, it is made up of primary membrane filtering system and intermediate membrane filtration system, be respectively applied to concentrate the gelatin solution of different concns, wherein: the primary membrane filtering system comprises rare glue basin, feeding pump, strainer, primary membrane filter assemblies, wherein the outlet of rare glue basin is connected with the entrance of strainer by feeding pump, the outlet of strainer is connected with the entrance of primary membrane filter assemblies, and the outlet of primary membrane filter assemblies is connected with the entrance of the dense glue basin of intermediate membrane filtration system; The middle rank membrane filtration system comprises dense glue basin, feeding pump, strainer, intermediate membrane filtration module, wherein the outlet of dense glue basin is connected with the entrance of strainer by feeding pump, the outlet of strainer is connected with the entrance of intermediate membrane filtration module, and the outlet of intermediate membrane filtration module is for concentrating the outlet of back glue.
Described primary membrane filter assemblies and intermediate membrane filtration module comprise 2 above film groups respectively, are used for gelatin solution classification dehydration is concentrated; Connect with series system between the described film group, each film group all is equipped with for the recycle pump that glue is circulated in this film group and the water cooler that is used for the cooling glue.
Preferably, described primary membrane filter assemblies and intermediate membrane filtration module comprise 2 film groups respectively.
The film group operating pressure of described primary membrane filter assemblies is 0.4-0.9MPa.
The film group operating pressure of described intermediate membrane filtration module is 0.9-1.6MPa.
The film of described primary membrane filter assemblies and intermediate membrane filtration module is rolled film.
The membrane filtration module that the utility model adopts is rolled film, rolling organic high molecular layer specifically, as polysulfones (PSO), polyacrylonitrile (PAN), poly(vinylidene fluoride) (PVDF), cellulose acetate (CA) etc., its principle of work is to be the membrane sepn process of impellent with the pressure difference, by inside and outside differential pressure the water in the gelatin solution of lower concentration, micromolecule polypeptide and part inorganic salt are removed, thereby reached the purpose that dehydration concentrates and purifies.Therefore according to concentrating the gelatin solution of different concns in the manufacturing of gelatin, select the membrane filtration module of corresponding molecular weight cut-off, thereby not drained, the gelatin that can guarantee small molecular weight do not improve the yield of gelatin, can see through organism such as peptide class and the inorganic salt partly of some small molecular weight of gelatine production course generation again, make the gelatin dilute solution reach concentrated purpose by the film dehydration, carry out synchronously with the desalination removal of impurity simultaneously.
In addition, the utility model is selected that molecular weight cut-off is lower, membrane flux is higher for use, is had the membrane filtration module of stronger contamination resistance, and equal outer depressing, the membrane flux of film group is more much bigger than the film of other classification.Because selected membrane filtration module has excellent antifouling property, even under higher gelatin concentration, also is not easy the contaminated flux that causes and obviously descends.
While membrane filtration module of the present utility model, cleaning, regeneration after it uses are convenient, simple to operate.Whenever finish a collection of product (about 24-36 hour), only need also with the aqueous sodium hydroxide solution of pH10.5 the film group to be cleaned once with the hot water injection system, just can reach good regeneration effect.
The membrane filtration module of membrane filtration system of the present utility model filters according to the gelatin to different concns, adopts primary membrane filter assemblies and intermediate membrane filtration module to filter respectively.The dehydration of wherein adopting the primary membrane filter assemblies to be used for the lower concentration glue concentrates, and the gelatin solution of the about 4%-6% of concentration that will extract from extacting glue pot removes moisture partly by the primary membrane filter assemblies, and concentration is brought up to about 10%.Because the primary membrane filter assemblies is used for filtering the lower material of concentration, relative material performance is also lower as freezing power, viscosity, the circulating resistance of liquid material is also less relatively, therefore the characteristics of primary membrane filter assemblies are that operating pressure is relatively low, be 0.4-0.9MPa, the design of dialyzate output is bigger, so select the pressure recycle pump bigger than low flow for use.And intermediate membrane filtration module is concentrated for the dehydration of intermediate concentration, the gelatin solution of concentration about 10% is brought up to 18% by intermediate membrane filtration module, it is high that the relative primary membrane filter assemblies of its operating pressure is wanted, be 0.9-1.6MPa, because the concentration higher (bringing up to 18% by 10%) of gelatin solution during system works, the middle rank flux of membrane filtration module under this situation is less relatively, so need select pressure height, recycle pump that flow is relatively little for use.Combine as the pipeline with primary membrane filtering system and intermediate membrane filtration system, the dense glue that pressure is high flows string easily and causes system's confusion to the primary membrane filter assemblies, and therefore the glue at different concns concentrates the membrane filtration system that needs use different.
In the membrane filtration system of the present utility model, primary membrane filter assemblies and intermediate membrane filtration module have film group more than 2 grades or 2 grades respectively.Because in the actual industrial production process, require the concentrated amount of material big, concentration is higher, adopt the single stage membrane group to be difficult to reach processing requirement, must adopt 2 grades of film groups or more multistage film group to come classification to dewater, the concentration of product is improved constantly.If but require not high, the concentrated amount of concentration little, also can adopt the single stage membrane group.
Gelatin solution dewaters behind the pre-concentration through membrane filtration system of the present utility model, again by board-like flasher, according to product demand the concentration of 18% gelatin solution is further brought up to 26%-35%.
According to the different process link of gelatine production course, at the different personnel's of manufacturer quality and state of the art, can take PLC to add touch-screen or PLC adds various control schemes such as artificial button operation.Can also take multiple surveillance and control measures such as feed tank liquid level monitoring, systemic circulation monitoring temperature, material turnover flow monitoring, dialyzate flow monitoring, the long-term normal operation of assurance system.
The beneficial effects of the utility model are:
Membrane filtration dehydration preconcentration technique does not need steam heating, can replace vacuum-evaporator fully and gelatin solution be dewatered concentrated.Compare with the 3 effect vacuum-evaporators that the manufacturing of gelatin industry is traditional, adopt 1 ton of gelatin of the membrane filtration dehydration every production of preconcentration technique of the present utility model can save coal-fired 1.4 tons.Produce the factory of 2000 tons in gelatin per year if adopt membrane filtration dehydration preconcentration technique, can save coal-fired 2800 tons the whole year for one.The running cost of deduction membrane filtration module, as expenses such as the electricity charge, film replacement charge, cleaning and regeneration water and chemical costs, gelatin per ton can be saved about 900 yuan of the expense of energy consumption, annual about 1,800,000 yuan of the energy consumption cost that reduces, not only reduce the cost of manufacturing of gelatin effectively, and played the effect of very considerable energy saving reduction of discharging, the pollution of minimizing air ambient.In addition from the angle of product performance, gelatin solution carries out pre-concentration by membrane filtration dehydration preconcentration technique of the present utility model, reduced the influence that evaporative process is heated for a long time, reduced gelatin physical property loss of energy relatively, that has improved gelatin freezes power and viscosity.
Description of drawings
Fig. 1 is the process flow sheet of the utility model membrane filtration gelatin dehydration preconcentration technique.As shown in the figure: 1, rare glue basin; 2, dense glue basin; 3, primary membrane filter assemblies film group; 4, primary membrane filter assemblies film group; 5, intermediate membrane filtration module film group; 6, intermediate membrane filtration module film group; 7, strainer; 8, strainer; 9, rare glue input channel; 10, process water input channel.
Embodiment
Below in conjunction with Fig. 1, further set forth the utility model by specific embodiment.
(1) the primary membrane filtering system is prepared
Open the process water valve, and the temperature of control water injects rare glue basin 1 at 40-45 ℃ with water, open the valve V1 of its bottom, open valve V4 and the V5 of deep bed filter 7, open V7, V1-1 more in order, V1-2, V1-3 and V2-1, V2-2, V2-3.
The bleeder screw of at first opening above the feeding pump FP1 is clean with the air scavenge of water pump the inside, till the outlet of seeing bleeder screw there are flowing out.Open feeding pump FP1 then, make water enter membrane filtration system, open successively subsequently recycle pump CP1, the bleeder screw above the CP2 with the gaseous emission in the water pump totally till there are flowing out, open recycle pump CP1, CP2 then.
(2) primary membrane filtration system filters
The temperature control of the rare glue of affirmation 4-6% is opened rare glue then and is advanced the glue valve between 48-50 ℃, and feeding pump FP1 starting is advanced glue to system.This moment, the dialyzate outlet valve was in the circulating backwater state, and the plastic emitting valve cuts out.After several seconds, recycle pump CP1 starting, subsequently, and recycle pump CP2 starting, glue begins to enter primary membrane filter assemblies film group 3 and 4.When liquid level rise to 〉=30% the time, the dialyzate outlet valve is in hull-borne.When liquid level was higher than set(ting)value, liquid level full level alarm, rare glue advanced the glue valve and close.System utilizes rare glue variable valve control liquid level, can regulate into the glue amount automatically and control liquid level, and glue fluctuates when big, can manually adjust by water compensating valve.When the concentration that detects glue at the plastic emitting sampling valve reaches 10% left and right sides, the opened condition (the open degree per-cent of pneumatic adjusting valve) that can under manual state, regulate the plastic emitting valve, system begins plastic emitting.During plastic emitting, need often detect gum concentration, higher as concentration, can suitably strengthen the plastic emitting flow, or strengthen the solation amount, vice versa.Glue enters dense glue basin, prepares to enter next step intermediate membrane filtration module and filters.
Feeding pump and two recycle pumps all adopt startup and the flow of Frequency Converter Control pump, can by regulating the frequency of frequency transformer, change flow and the pressure of feeding pump and recycle pump according to the actual requirement of manufacturing of gelatin, to reach best control level.Simultaneously, between recycle pump and film group entrance, also be provided with water cooler, be used for the cooling glue.
(3) intermediate membrane filtration system is prepared
Open the process water valve, and the temperature of control water injects dense glue basin 2 at 40-45 ℃ with water, open the valve HV1 of its bottom, open valve HV4 and the HV5 of deep bed filter 8, open HV7, HV1-1, HV1-2 more in order, HV1-3 and HV2-1, HV2-2, HV2-3.
The bleeder screw of at first opening above the feeding pump HFP1 is clean with the air scavenge of water pump the inside, till the outlet of seeing bleeder screw there are flowing out.Open feeding pump HFP1 then, make water enter membrane filtration system, open successively subsequently recycle pump HCP1, the bleeder screw above the HCP2 with the gaseous emission in the water pump totally till there are flowing out, open recycle pump HCP1, HCP2 then.
(4) intermediate membrane filtration module filters
Be ready to the glue about 10% and confirm that the control of its temperature between 48-50 ℃, opens into glue valve then, feeding pump HFP1 starting is advanced glue to system.This moment, the dialyzate outlet valve was in the circulating backwater state, and the plastic emitting valve cuts out.After several seconds, recycle pump HCP1 starting, subsequently, and recycle pump HCP2 starting, glue begins to enter intermediate membrane filtration module film group 5 and 6.When liquid level rise to 〉=30% the time, the dialyzate outlet valve is in hull-borne.When liquid level was higher than set(ting)value, the liquid level full level alarm advanced the glue valve and closes.System utilizes rare glue variable valve control liquid level, can regulate into the glue amount automatically and control liquid level, and glue fluctuates when big, can manually adjust by water compensating valve.When the concentration that detects glue at the plastic emitting sampling valve reaches 18% left and right sides, the opened condition (the open degree per-cent of pneumatic adjusting valve) that can under manual state, regulate the plastic emitting valve, system begins plastic emitting.During plastic emitting, need often detect gum concentration, higher as concentration, can suitably strengthen the plastic emitting flow, or strengthen the solation amount, vice versa.
When production was finished, program quit work.Can transfer system to manual operation this moment, with hot water remaining glue pushed away and wash reading＜0.5% and shut down then, also can forward to immediately to push away the glue program and operate.
Glue dewaters behind the pre-concentration through membrane filtration system of the present utility model, obtains the gelatin concentrated solution of concentration about 18%, again by board-like flasher, according to product demand the concentration of 18% gelatin concentrated solution is brought up to 26%-35%.
(5) clean
In order to prevent that membrane element is damaged, the water of cleaning membrane system should adopt reverse osmosis water or deionized water.Because the primary membrane filter assemblies is identical with the cleaning step of intermediate membrane filtration module; be the example explanation with the primary membrane filter assemblies below: will manually reclaim valve open, and connect the glue water return pipeline, and open water compensating valve and plastic emitting valve then; the starting of FP1 pump; CP1 pump starting after several seconds, CP2 pump starting subsequently pushes away glue; close the plastic emitting valve after finishing by the predefined time; wash, water compensating valve continues to open and carries out water flushing, and the water flushing arrives auto stop after the time of setting.As the gelatin concentration that checks release is very low, can stop to push away glue in advance, begins washing.
Finish push away glue after, wash, close the plastic emitting valve this moment, continues to open water compensating valve, water washes, the water flush time arrives the back auto stop.
After finishing washing, carry out alkali cleaning, wash cycles is opened water discharge valve and water compensating valve after tens of minutes, shuts down after continuing to be flushed to time of setting.The sample that draws water before shutdown detects, as reaches requirement, can finish to clean.If also do not reach requirement, enter next step washing.Generally speaking, each production cycle 45-48 ℃ of hot water only need partly storing the glue tank volume after finishing is adjusted to pH10-10.5 with a small amount of white liquor and carries out alkali cleaning as the cleaning soup.
After finishing alkali cleaning, if water sample sampling observation result does not reach requirement, can wash again.This moment, the plastic emitting valve cut out automatically, and water compensating valve continues to open, and water is shut down after being flushed to time of setting.
Should be understood that these embodiment only are used for explanation the utility model and are not used in the scope of the present utility model that limits.After the content of having read the utility model instruction, those skilled in the art can do various conversion or modification to the utility model with any same or similar means, and these equivalent form of values fall within the protection domain of the present utility model equally.
Claims (4)
1. membrane filtration gelatin dehydration preconcentration technique, it is characterized in that: it is made up of primary membrane filtering system and intermediate membrane filtration system, be respectively applied to concentrate the gelatin solution of different concns, wherein: the primary membrane filtering system comprises rare glue basin, feeding pump, strainer, primary membrane filter assemblies, wherein the outlet of rare glue basin is connected with the entrance of strainer by feeding pump, the outlet of strainer is connected with the entrance of primary membrane filter assemblies, and the outlet of primary membrane filter assemblies is connected with the entrance of the dense glue basin of intermediate membrane filtration system; The middle rank membrane filtration system comprises dense glue basin, feeding pump, strainer, intermediate membrane filtration module, wherein the outlet of dense glue basin is connected with the entrance of strainer by feeding pump, the outlet of strainer is connected with the entrance of intermediate membrane filtration module, and the outlet of intermediate membrane filtration module is for concentrating the outlet of back glue.
2. membrane filtration gelatin according to claim 1 dehydration preconcentration technique, it is characterized in that: described primary membrane filter assemblies and intermediate membrane filtration module comprise 2 above film groups respectively, are used for gelatin solution classification dehydration is concentrated; Connect with series system between the described film group, each film group all is equipped with for the recycle pump that glue is circulated in this film group and the water cooler that is used for the cooling glue.
3. membrane filtration gelatin according to claim 2 dehydration preconcentration technique, it is characterized in that: described primary membrane filter assemblies and intermediate membrane filtration module comprise 2 film groups respectively.
4. according to claim 1 or 2 or 3 described membrane filtration gelatin dehydration preconcentration techniques, it is characterized in that: the film of described primary membrane filter assemblies and intermediate membrane filtration module is rolled film.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013200346975U CN203159517U (en) | 2013-01-23 | 2013-01-23 | Dewatering and preconcentration system of gelatin for membrane filtration |
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| CN2013200346975U CN203159517U (en) | 2013-01-23 | 2013-01-23 | Dewatering and preconcentration system of gelatin for membrane filtration |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103084066A (en) * | 2013-01-23 | 2013-05-08 | 余苟 | Membrane filtration gelatin dehydration preconcentration system |
| CN108367250A (en) * | 2016-01-22 | 2018-08-03 | 住友电气工业株式会社 | The operating method and filter device of filter device |
-
2013
- 2013-01-23 CN CN2013200346975U patent/CN203159517U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103084066A (en) * | 2013-01-23 | 2013-05-08 | 余苟 | Membrane filtration gelatin dehydration preconcentration system |
| CN108367250A (en) * | 2016-01-22 | 2018-08-03 | 住友电气工业株式会社 | The operating method and filter device of filter device |
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Granted publication date: 20130828 |
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