CN103691322B - A kind of automatic ultrafiltration system and the hyperfiltration process of this system under constant transmembrane pressure - Google Patents
A kind of automatic ultrafiltration system and the hyperfiltration process of this system under constant transmembrane pressure Download PDFInfo
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- CN103691322B CN103691322B CN201310730213.5A CN201310730213A CN103691322B CN 103691322 B CN103691322 B CN 103691322B CN 201310730213 A CN201310730213 A CN 201310730213A CN 103691322 B CN103691322 B CN 103691322B
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Abstract
The invention discloses a kind of ultrafiltration system automatically, comprise membrane pump, milipore filter bag and PLC, milipore filter bag has inlet, liquid outlet and liquid return hole, the first pressure sensor is connected with between the port of export of membrane pump and the inlet of milipore filter bag, the liquid return hole of milipore filter bag is connected with the second pressure sensor, second pressure sensor connects shutoff valve, the liquid outlet of milipore filter bag is connected with the 3rd pressure sensor, and the first pressure sensor, the second pressure sensor, the 3rd pressure sensor and shutoff valve are connected with PLC respectively.The invention also discloses a kind of this automatic ultrafiltration system that utilizes and realize the hyperfiltration process under constant transmembrane pressure, ultrafiltration system achieves with constant transmembrane pressure and flow continuous service, obtain the most rational ultra-filtration conditions, realize continuous ultrafiltration process, improve ultrafiltration efficiency, compared to existing ultrafiltration system, ultrafiltration efficiency can improve 30-50%.
Description
Technical field
The present invention relates to a kind of ultrafiltration system, particularly a kind of automatic ultrafiltration system and the hyperfiltration process of this system under constant transmembrane pressure.
Background technology
Ultrafiltration is a kind of is separation principle with screening, take pressure as the membrane separating process of motive force, filtering accuracy, within the scope of 0.005-0.01 μm, effectively can remove the particulate in water, colloid, bacterium, thermal source and macromolecule organic matter, can be widely used in the separation of material, concentrated, purification.Current ultrafiltration system cannot regulate transmembrane pressure and flow automatically, cannot reach the most rational ultra-filtration conditions, film transmitance and sample yield low, ultrafiltration efficiency is low.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide a kind of automatic ultrafiltration system and the hyperfiltration process of this system under constant transmembrane pressure that can improve sample film transmitance, sample yield and ultrafiltration efficiency.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention is achieved through the following technical solutions: a kind of ultrafiltration system automatically, comprise membrane pump, milipore filter bag and PLC, membrane pump passes through driven by servomotor, the arrival end of membrane pump connects a shuttle, described milipore filter bag has three interfaces, be respectively inlet, liquid outlet and liquid return hole, the first pressure sensor is connected with by pipeline between the port of export of membrane pump and the inlet of milipore filter bag, the liquid return hole of milipore filter bag is connected with the second pressure sensor by pipeline, second pressure sensor connects a shutoff valve, shutoff valve connects again the first electric conductivity detector, after the first electric conductivity detector, stream is out divided into two-way, recycle control valve of leading up to is communicated with shuttle, dope of separately leading up to is discharged control valve and is connected with a dope collection container, the liquid outlet of described milipore filter bag is connected with the 3rd pressure sensor and the second electric conductivity detector successively and is connected with filtrate collection container afterwards, described servomotor, first pressure sensor, second pressure sensor, 3rd pressure sensor and shutoff valve are connected with described PLC respectively.
Further, described recycle control valve, dope are discharged control valve and are connected to pilot solenoid valve, and the air source input end of pilot solenoid valve is connected with power gas source, and pilot solenoid valve is also connected with PLC.
Further, described first electric conductivity detector and the second electric conductivity detector are connected with industrial touch control computer respectively.
The hyperfiltration process of a kind of automatic ultrafiltration system provided by the invention under constant transmembrane pressure, comprises the steps:
(1) first set constant transmembrane pressure and initial flow by PLC, ultrafiltration system brings into operation with initial flow, and the aperture of shutoff valve is 100%, treats that ultrafiltration sample solution pumps into ultrafiltration system by membrane pump, makes sample solution automatically fill whole system;
(2) keep the constant flow rate of ultrafiltration system constant, PLC reduces the aperture of shutoff valve according to the feedback signal of the first pressure sensor, the second pressure sensor and the 3rd pressure sensor, thus transmembrane pressure increases gradually, reach the constant transmembrane pressure set by system, ultrafiltration system is with constant transmembrane pressure and flow continuous service;
(3) filtrate after ultrafiltration is after the liquid outlet of milipore filter bag is discharged, collected by filtrate collection container, PLC can regulate opening or closing of recycle control valve, when opening recycle control valve, backflow sample solution enters shuttle again through recycle control valve and carries out loop ultrafiltration, PLC, by the opening and closing regulating dope to discharge control valve, carries out continuous collection or the batch collection of concentrate.
Compared with prior art, the present invention has the following advantages:
(1) automatic ultrafiltration system provided by the invention on traditional ultrafiltration system basis, only can need be equipped with a membrane pump and milipore filter bag, realize whole ultra-filtration process;
(2) automatic ultrafiltration system provided by the invention can carry out simple optimum configurations by the software that PLC is built-in, revises suitable transmembrane pressure;
(3) three pressure sensors that PLC connects according to milipore filter bag regulate shutoff valve aperture and pump discharge, realize constant transmembrane pressure, obtain the most rational ultra-filtration conditions, continuous ultrafiltration process can be realized, improve ultrafiltration efficiency, compared to existing ultrafiltration system, ultrafiltration efficiency can improve 30-50%;
(4) system can cut circulation and the sample collection that valve realizes system stream automatically, can pass through electric conductivity detector, Real-Time Monitoring solution conductivity value, grasps ultrafiltration schedule in real time, conveniently processes the sample filtered.
Accompanying drawing explanation
Fig. 1 is the structural representation of automatic ultrafiltration system in the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
As shown in Figure 1, a kind of ultrafiltration system automatically, comprise membrane pump 1, milipore filter bag 3 and PLC 15, membrane pump 1 is driven by servomotor 2, the arrival end of membrane pump 1 connects a shuttle 12, described milipore filter bag 3 has three interfaces, be respectively inlet 31, liquid outlet 33 and liquid return hole 32, the first pressure sensor 4 is connected with by pipeline between the port of export of membrane pump 1 and the inlet 31 of milipore filter bag 3, the liquid return hole 32 of milipore filter bag 3 is connected with the second pressure sensor 5 by pipeline, second pressure sensor 5 connects a shutoff valve 7, shutoff valve 7 connects again the first electric conductivity detector 10, after the first electric conductivity detector 10, stream is out divided into two-way, recycle control valve 9 of leading up to is communicated with shuttle 12, dope of separately leading up to is discharged control valve 8 and is connected with a dope collection container 14, the liquid outlet 33 of described milipore filter bag 3 is connected with the 3rd pressure sensor 6 and the second electric conductivity detector 11 successively and is connected with filtrate collection container 13 afterwards, described servomotor 2, first pressure sensor 4, second pressure sensor 5, 3rd pressure sensor 6 and shutoff valve 7 are connected with described PLC 15 respectively.
Wherein, recycle control valve 9, dope are discharged control valve 8 and are connected to pilot solenoid valve 17, and the air source input end of pilot solenoid valve 17 is connected with power gas source, and pilot solenoid valve 17 is also connected with PLC 15.Recycle control valve 9, dope are discharged control valve 8 and are pneumatic operated valve.Pilot solenoid valve 17 connects pneumatic bigeminy part 18 and silencer 19.PLC 15 controls the opening and closing of pilot solenoid valve 17, thus controls entering of power gas source, and then controls the opening and closing of recycle control valve 9 and dope discharge control valve 8.
First electric conductivity detector 10 is connected with industrial touch control computer 16 respectively with the second electric conductivity detector 11, can Real-Time Monitoring solution conductivity value, grasps ultrafiltration schedule in real time, conveniently processes the sample filtered.
Utilize automatic ultrafiltration system of the present invention to realize the hyperfiltration process under constant transmembrane pressure, comprise the steps:
(1) first constant transmembrane pressure and initial flow is set by PLC 15, ultrafiltration system brings into operation with initial flow, the aperture of shutoff valve 7 is 100%, treats that ultrafiltration sample solution pumps into ultrafiltration system by membrane pump 1, makes sample solution automatically fill whole system;
(2) keep the constant flow rate of ultrafiltration system constant, PLC 15 reduces the aperture of shutoff valve 7 according to the feedback signal of the first pressure sensor 4, second pressure sensor 5 and the 3rd pressure sensor 6, thus transmembrane pressure increases gradually, reach the constant transmembrane pressure set by system, ultrafiltration system is with constant transmembrane pressure and flow continuous service;
(3) filtrate after ultrafiltration is after the liquid outlet 33 of milipore filter bag 3 is discharged, collected by filtrate collection container 13, PLC 15 can regulate opening or closing of recycle control valve 9, when opening recycle control valve 9, backflow sample solution enters shuttle 12 again through recycle control valve 9 and carries out loop ultrafiltration, PLC 15, by the opening and closing regulating dope to discharge control valve 8, carries out continuous collection or the batch collection of concentrate.When concentrate does not reach certain concentrating degree, dope is discharged control valve 8 and is in closed condition, when concentrate is concentrated to certain degree, open dope by PLC 15 and discharge control valve 8, concentrate enters dope collection container 14 by pipeline and collects continuously.In addition, also can in shuttle 12 after the complete ultrafiltration of ultrafiltration sample solution terminates, PLC 15 controls to open dope again and discharges control valve 8, carries out the batch collection of concentrate.
The present invention can carry out simple optimum configurations by the software that PLC 15 is built-in, revises suitable transmembrane pressure.In hyperfiltration process of the present invention, PLC 15 regulates aperture and the pump discharge of shutoff valve 7 according to three pressure sensors that milipore filter bag 3 connects, realize constant transmembrane pressure, obtain the most rational ultra-filtration conditions, continuous ultrafiltration process can be realized, improve ultrafiltration efficiency, compared to existing ultrafiltration system, ultrafiltration efficiency can improve 30-50%.Automatic ultrafiltration system of the present invention can be used for various ultrafiltration, desalination, purifies, concentrated application and system pilot scale and production level scale.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (4)
1. an automatic ultrafiltration system, it is characterized in that: comprise membrane pump, milipore filter bag and PLC, membrane pump passes through driven by servomotor, the arrival end of membrane pump connects a shuttle, described milipore filter bag has three interfaces, be respectively inlet, liquid outlet and liquid return hole, the first pressure sensor is connected with by pipeline between the port of export of membrane pump and the inlet of milipore filter bag, the liquid return hole of milipore filter bag is connected with the second pressure sensor by pipeline, second pressure sensor connects a shutoff valve, shutoff valve connects again the first electric conductivity detector, after the first electric conductivity detector, stream is out divided into two-way, recycle control valve of leading up to is communicated with shuttle, dope of separately leading up to is discharged control valve and is connected with a dope collection container, the liquid outlet of described milipore filter bag is connected with the 3rd pressure sensor and the second electric conductivity detector successively and is connected with filtrate collection container afterwards, described servomotor, first pressure sensor, second pressure sensor, 3rd pressure sensor and shutoff valve are connected with described PLC respectively, on the basis that the constant flow rate of this ultrafiltration system is constant, PLC can according to the first pressure sensor, the feedback signal of the second pressure sensor and the 3rd pressure sensor reduces the aperture of shutoff valve, thus transmembrane pressure increases gradually, reach the constant transmembrane pressure set by system, make this ultrafiltration system with constant transmembrane pressure and flow continuous service.
2. automatic ultrafiltration system according to claim 1, it is characterized in that: described recycle control valve, dope are discharged control valve and be connected to pilot solenoid valve, the air source input end of pilot solenoid valve is connected with power gas source, and pilot solenoid valve is also connected with PLC.
3. automatic ultrafiltration system according to claim 1, is characterized in that: described first electric conductivity detector and the second electric conductivity detector are connected with industrial touch control computer respectively.
4. the hyperfiltration process of automatic ultrafiltration system according to claim 1 under constant transmembrane pressure, is characterized in that, comprise the steps:
(1) first set constant transmembrane pressure and initial flow by PLC, ultrafiltration system brings into operation with initial flow, and the aperture of shutoff valve is 100%, treats that ultrafiltration sample solution pumps into ultrafiltration system by membrane pump, makes sample solution automatically fill whole system;
(2) keep the constant flow rate of ultrafiltration system constant, PLC reduces the aperture of shutoff valve according to the feedback signal of the first pressure sensor, the second pressure sensor and the 3rd pressure sensor, thus transmembrane pressure increases gradually, reach the constant transmembrane pressure set by system, ultrafiltration system is with constant transmembrane pressure and flow continuous service;
(3) filtrate after ultrafiltration is after the liquid outlet of milipore filter bag is discharged, collected by filtrate collection container, PLC can regulate opening or closing of recycle control valve, when opening recycle control valve, backflow sample solution enters shuttle again through recycle control valve and carries out loop ultrafiltration, PLC, by the opening and closing regulating dope to discharge control valve, carries out continuous collection or the batch collection of concentrate.
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| CN201310730213.5A CN103691322B (en) | 2013-12-26 | 2013-12-26 | A kind of automatic ultrafiltration system and the hyperfiltration process of this system under constant transmembrane pressure |
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| CN201310730213.5A CN103691322B (en) | 2013-12-26 | 2013-12-26 | A kind of automatic ultrafiltration system and the hyperfiltration process of this system under constant transmembrane pressure |
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| CN103691322B true CN103691322B (en) | 2016-03-30 |
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| CN106823541B (en) * | 2017-03-30 | 2022-12-23 | 山东泰邦生物制品有限公司 | Nano-membrane filtration system and application thereof in removing virus of product |
| CN111389228B (en) * | 2020-04-30 | 2023-10-31 | 江苏汉邦科技股份有限公司 | Adjustable hollow fiber ultrafiltration system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4381999A (en) * | 1981-04-28 | 1983-05-03 | Cobe Laboratories, Inc. | Automatic ultrafiltration control system |
| CN101069815A (en) * | 2007-03-30 | 2007-11-14 | 西安建筑科技大学 | Control device for fully-automatic constant-flow super-filtering water treatment |
| CN101125281A (en) * | 2007-06-12 | 2008-02-20 | 天津膜天膜工程技术有限公司 | Immersion type hollow fiber membrane separator and its running process |
| CN101890301A (en) * | 2010-07-09 | 2010-11-24 | 南京工业大学 | Air-lift membrane filtration complete equipment |
| CN102015076A (en) * | 2008-02-19 | 2011-04-13 | Abb研究有限公司 | On-line performance management of membrane separation process |
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- 2013-12-26 CN CN201310730213.5A patent/CN103691322B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4381999A (en) * | 1981-04-28 | 1983-05-03 | Cobe Laboratories, Inc. | Automatic ultrafiltration control system |
| CN101069815A (en) * | 2007-03-30 | 2007-11-14 | 西安建筑科技大学 | Control device for fully-automatic constant-flow super-filtering water treatment |
| CN101125281A (en) * | 2007-06-12 | 2008-02-20 | 天津膜天膜工程技术有限公司 | Immersion type hollow fiber membrane separator and its running process |
| CN102015076A (en) * | 2008-02-19 | 2011-04-13 | Abb研究有限公司 | On-line performance management of membrane separation process |
| CN101890301A (en) * | 2010-07-09 | 2010-11-24 | 南京工业大学 | Air-lift membrane filtration complete equipment |
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