CN110860207A - Double-inlet coupling pulse flow enhanced membrane distillation system - Google Patents
Double-inlet coupling pulse flow enhanced membrane distillation system Download PDFInfo
- Publication number
- CN110860207A CN110860207A CN201911243867.9A CN201911243867A CN110860207A CN 110860207 A CN110860207 A CN 110860207A CN 201911243867 A CN201911243867 A CN 201911243867A CN 110860207 A CN110860207 A CN 110860207A
- Authority
- CN
- China
- Prior art keywords
- membrane
- feed liquid
- distillation system
- membrane distillation
- inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
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
- B01D61/36—Pervaporation; Membrane distillation; Liquid permeation
- B01D61/364—Membrane distillation
-
- 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
- B01D61/36—Pervaporation; Membrane distillation; Liquid permeation
- B01D61/366—Apparatus therefor
-
- 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
- B01D61/36—Pervaporation; Membrane distillation; Liquid permeation
- B01D61/368—Accessories; Auxiliary operations
Abstract
The invention discloses a double-inlet coupled pulse flow enhanced membrane distillation system, which comprises a hot feed liquid circulation subsystem and a penetration condensation subsystem; the hot feed liquid circulation subsystem comprises a feed liquid tank, a heater, a waveform generator and a membrane assembly; after the feed liquid in the feed liquid tank is heated by the heater, two hot feed liquids with two flowing waveforms are formed under the action of the waveform generator and the electromagnetic valve, and are subjected to convection collision after entering the membrane assembly, so that the mixing of the hot feed liquids in the membrane assembly is facilitated, and the mass transfer efficiency and the heat efficiency are greatly improved. In addition, the system has the advantages of low energy consumption, easy processing of the device structure, large effective membrane area and the like, and is not only suitable for small-sized membrane distillation devices, but also suitable for large-sized membrane distillation equipment.
Description
Technical Field
The invention relates to a double-inlet coupling pulse flow enhanced membrane distillation system.
Background
With the continuous development of industrialization, the discharge amount of factory sewage is increasing day by day, and a series of problems such as water eutrophication and massive death of aquatic organisms caused by the pollution have caused serious damage to the ecological environment and threaten the daily water consumption of residents, so that the water treatment technology has attracted people's attention, and the membrane distillation as a water treatment technology has the advantages of high retention rate, small device volume and high waste heat utilization, and is generally divided into Direct Contact Membrane Distillation (DCMD), Air Gap Membrane Distillation (AGMD), scavenging membrane distillation (SGMD), Vacuum Membrane Distillation (VMD) and the like according to the difference of condensation modes. Wherein, vacuum type membrane distillation (VMD) water yield is the highest, consequently, extensive research and application have been obtained, its theory of operation is for letting in the higher liquid of temperature at hydrophobic membrane one end, the other end passes through vacuum pump extraction gas, make vacuum, hot feed liquid is under saturated steam pressure difference's effect, the evaporation permeates the membrane pore and gets into the infiltration side, by the vacuum pump extraction condensation, and liquid and solid-state unable permeating membrane pore is held back, consequently, temperature polarization and concentration polarization phenomenon have been produced on the nearly membrane surface of feed liquid side, this has not only reduced mass transfer efficiency, the pollution on membrane surface has still been aggravated.
Many documents report solutions to this problem, however, these methods all have disadvantages. For example, chinese patent document CN1416942A discloses a device for preventing and treating membrane fouling by using ultrasonic waves and magnetic fields, which generates cavitation by using the high-frequency vibration of ultrasonic waves to break the original stable flow state, increase the disorder of flow, weaken concentration polarization and temperature polarization, and reduce the degree of membrane fouling by using the anti-fouling effect of magnetic fields. Another chinese patent document CN103212296A discloses an air-disturbed membrane distillation method and membrane distillation apparatus, which utilizes the introduction of air into a membrane module to increase the turbulence of fluid, destroy the temperature boundary layer and the concentration boundary layer, improve the mass transfer efficiency, and alleviate the membrane pollution. For another example, chinese patent document CN101496999B discloses a high temperature membrane distillation apparatus, which uses a baffle plate to generate secondary flow continuously to increase the number of reynolds. This method has a disadvantage in that the arrangement of the baffle plate increases pressure loss, which may cause rupture of the membrane at the inlet when the pressure loss is too high.
Therefore, there is a need for a more effective method for solving the problems of lower membrane flux and membrane fouling due to temperature polarization and concentration polarization in the membrane distillation process.
Disclosure of Invention
Aiming at the existing problems, the invention provides a double-inlet coupling pulse flow enhanced membrane distillation system, wherein a membrane component is arranged as a double inlet, and a waveform generator is used for generating two waveforms for hot feed liquid entering the membrane component, so that the hot feed liquid generates convection collision in the membrane component, and the problems of mass transfer efficiency and membrane pollution caused by temperature polarization and concentration polarization phenomena are solved. The specific technical scheme is as follows:
a double-inlet coupling pulse flow enhanced membrane distillation system comprises a hot feed liquid circulation subsystem and a penetration condensation subsystem; the hot feed liquid circulation subsystem comprises a feed liquid tank, a heater, a waveform generator and a membrane assembly; the membrane component is internally provided with a hydrophobic porous membrane which is provided with two inlet passages, and the two inlet passages are respectively provided with an electromagnetic valve A and an electromagnetic valve B which are controlled by a waveform generator; the feed liquid in the feed liquid tank is heated by a heater, and then forms two hot feed liquids with two flowing waveforms under the action of a waveform generator, an electromagnetic valve A and an electromagnetic valve B, the two hot feed liquids enter a membrane assembly and then generate convection collision, and after being filtered and blocked by a hydrophobic porous membrane in the membrane assembly, the retained hot feed liquids flow back into the feed liquid tank, and enter a penetration condensation subsystem through evaporation components of the hydrophobic porous membrane.
Preferably, in the aforementioned double-inlet coupled pulse flow enhanced membrane distillation system, the waveform generator is a pulse waveform generator, and the generated waveform includes sine waves, triangular waves and step waves.
Preferably, in the aforementioned double-inlet coupled pulse flow enhanced membrane distillation system, the two inlet passages of the membrane module are symmetrically arranged with respect to the plane of the outlet passage.
Further preferably, in the double-inlet coupled pulsed flow enhanced membrane distillation system, the angles of the two inlet passages of the membrane module can be adjusted, and the adjustment range is 20-50 °.
In the aforementioned dual-inlet coupled pulsed flow enhanced membrane distillation system, the two inlet passages of the membrane module are further respectively provided with a feed liquid pump a and a feed liquid pump B, which are respectively located at the upstream of the electromagnetic valve a and the electromagnetic valve B, so as to pump the hot feed liquid into the membrane module.
In addition, in the double-inlet coupled pulse flow enhanced membrane distillation system, an inlet temperature sensor and an outlet temperature sensor are respectively arranged on two sides of the membrane component and used for detecting the temperature of the feed liquid entering and exiting the membrane component; and a rotor flow meter is arranged at the upstream of the inlet temperature sensor and used for adjusting the flow of hot feed liquid entering the membrane module.
Preferably, in the aforementioned dual-inlet coupled pulse flow enhanced membrane distillation system, the hydrophobic porous membrane in the membrane module is a flat membrane made of polytetrafluoroethylene material, and divides an inner cavity of the membrane module into a feed liquid side and a permeate side; two inlets and two outlets of the membrane component are positioned on the feed liquid side; an exhaust valve is arranged above the membrane module and used for exhausting gas in the membrane module.
In the aforementioned dual-inlet coupled pulsed flow enhanced membrane distillation system, the permeate condenser subsystem includes a vacuum pump for evacuating the permeate side of the membrane module and a condenser for condensing the extracted water vapor.
Preferably, in the aforementioned double-inlet coupled pulsed flow enhanced membrane distillation system, the permeate condenser system further comprises a buffer tank located between the vacuum pump and the membrane module, for ensuring smooth operation of the system.
In the aforementioned double-inlet coupled pulsed flow enhanced membrane distillation system, the hot feed liquid circulation system further comprises an electronic level and a temperature controller; the electronic balance is positioned at the bottom of the feed liquid tank and used for measuring the membrane flux of the membrane component; the temperature controller is used for controlling the heating temperature of the heater, and the return difference is set to be 0.2-0.4 ℃.
The invention has the beneficial effects that:
the system of the invention utilizes the convection collision of two flows to increase the turbulence of the flow, which is beneficial to the mixing of hot feed liquid in the membrane component, compared with other membrane distillation optimizing devices, the system has the advantages of low energy consumption, easy processing of the device structure, large effective membrane area and the like, in order to further improve the optimizing effect, the electromagnetic valve is arranged in the flow channel to realize the flow of different waveforms, and the mass transfer efficiency and the heat efficiency are greatly improved.
Drawings
FIG. 1 is a schematic structural diagram of a double-inlet coupled pulsed flow enhanced membrane distillation system according to the present invention.
In the figure: 1. an electronic balance; 2. a feed liquid tank; 3. a heater; 4. a temperature controller; 5. an inlet temperature sensor; 6. a rotameter; 7. a feed liquid pump A; 8. a feed liquid pump B; 9. an electromagnetic valve A; 10. a solenoid valve B; 11. a waveform generator; 12. a membrane module; 12a, an exhaust valve; 12b, a hydrophobic porous membrane; 13. a buffer tank; 14. a vacuum pump; 15. a condenser; 16. an outlet temperature sensor.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the following embodiments and accompanying drawings:
a double-inlet coupled pulse flow enhanced membrane distillation system is shown in figure 1 and comprises a hot liquid circulation subsystem and a penetration condensation subsystem; the hot feed liquid circulating subsystem comprises a feed liquid tank 2, a heater 3, a waveform generator 11 and a membrane module 12; a hydrophobic porous membrane 12B is arranged in the membrane component 12, and is provided with two inlet passages, and an electromagnetic valve A9 and an electromagnetic valve B10 which are controlled by a waveform generator 11 are respectively arranged on the two inlet passages; the feed liquid in the feed liquid tank 2 is heated by the heater 3, and then forms two hot feed liquids with two flowing waveforms under the action of the waveform generator 11, the electromagnetic valve A9 and the electromagnetic valve B10, and the two hot feed liquids enter the membrane assembly 12 and then are subjected to convection collision, so that the flowing turbulence is increased, the mixing of the hot feed liquid in the membrane assembly is facilitated, and the mass transfer efficiency and the heat efficiency are greatly improved. After being filtered and blocked by the hydrophobic porous membrane 12b in the membrane module 12, the retained hot feed liquid flows back to the feed liquid tank 2, and the evaporation component penetrating through the hydrophobic porous membrane 12b enters the penetration condensation subsystem. Compared with other membrane distillation optimizing devices, the system has the advantages of low energy consumption, easy processing of the device structure, large effective membrane area and the like. In addition, the system is not only suitable for a small-sized membrane distillation device, but also can be used for large-sized membrane distillation equipment.
In this embodiment, the waveform generator 11 is a pulse waveform generator, and the generated waveform includes a sine wave, a triangular wave, a step wave, and the like; the two inlet passages of the membrane module 12 are symmetrically arranged about the plane of the outlet passage, and the angle can be adjusted, and the adjustment range is 20-50 degrees. In addition, a feed liquid pump A7 and a feed liquid pump B8 are respectively arranged on the two inlet passages of the membrane module 12, and are respectively positioned at the upstream of the electromagnetic valve A9 and the electromagnetic valve B10 so as to pump hot feed liquid into the membrane module 12.
In the double-inlet coupled pulse flow enhanced membrane distillation system of the present embodiment, an inlet temperature sensor 5 and an outlet temperature sensor 16 are further respectively disposed on two sides of the membrane module 12, and are used for detecting the temperature of a feed liquid entering and exiting the membrane module 12; and a rotor flow meter 6 is arranged at the upstream of the inlet temperature sensor 5 and used for regulating the flow of hot feed liquid entering the membrane component 12. The hydrophobic porous membrane 12b in the membrane module 12 is a flat membrane made of polytetrafluoroethylene material, which divides the inner cavity of the membrane module 12 into a feed liquid side and a permeate side; both inlets and outlets of the membrane module 12 are located on the feed side; an exhaust valve 12a is also arranged above the membrane module 12 and used for exhausting gas in the membrane module 12.
In the dual-inlet coupled pulse flow enhanced membrane distillation system, the permeate condenser subsystem includes a vacuum pump 14 and a condenser 15, the vacuum pump 14 is used for vacuumizing the permeate side of the membrane module 12, and the condenser 15 is used for condensing the extracted water vapor. To ensure smooth system operation, the permeate condenser subsystem further includes a surge tank 13, which is located between the vacuum pump 14 and the membrane module 12.
In addition, in the dual-inlet coupled pulsed flow enhanced membrane distillation system of the embodiment, the hot feed liquid circulating system further includes an electronic balance 1 and a temperature controller 4; the electronic balance 1 is positioned at the bottom of the feed liquid tank 2 and is used for measuring the membrane flux of the membrane component 12; the temperature controller 4 is used for controlling the heating temperature of the heater 3, and the return difference is set to be 0.2-0.4 ℃.
The operation process of the double-inlet coupled pulse flow enhanced membrane distillation system described in this embodiment is as follows: the hot feed liquid circulation subsystem conveys the feed liquid to be treated to the membrane module 12, and water vapor is separated by the hydrophobic porous membrane 12a and is collected and used by the penetration condensation subsystem.
The specific process of the system device operation in this embodiment is as follows: after the system is started, a feed liquid pump A7 and a feed liquid pump B8 start to operate, feed liquid to be treated stored in a feed liquid tank 2 is conveyed to a heater 3, the heater 3 is controlled by a temperature controller 4 to heat the feed liquid to a preset temperature, the heated feed liquid flows through a temperature sensor 5 and a rotor flow meter 6, the actual temperature and the actual flow rate of the feed liquid can be measured, fluid is divided into two parts after passing through the rotor flow meter 6, and one part of fluid flows through the feed liquid pump A7 and an electromagnetic valve A9 and then is injected into a membrane component 12; the other flow passes through a feed liquid pump B8 and an electromagnetic valve B10 and then is injected into a membrane component 12; when the fluid passes through the solenoid valve A9 and the solenoid valve B10, the original relatively stable flow is influenced by the waveform generator 11, and the pulse flow is generated, so that the disturbance of the fluid is increased. The two flows enter the membrane module 12 from the two inlet channels respectively, and are guided to collide by adjusting the angle of the double inlet channels, so that the turbulence degree of the flows is further enhanced; the coupling of the double-inlet membrane module and the pulse flow can increase the turbulence of fluid in the membrane module 12, weaken the temperature polarization and concentration polarization phenomena, strengthen the heat and mass transfer process and further increase the water yield. After the fluid enters the membrane module 12, most of the fluid flows out from the outlet, and flows back to the feed liquid tank 2 after being subjected to temperature measurement by the outlet temperature sensor 16, so that hot feed liquid circulation is formed. A small part of fluid is evaporated into water vapor, the water vapor penetrates through the porous hydrophobic membrane 12b under the action of the vacuum pump 14 and reaches the buffer tank 13, and finally pure water is obtained under the action of the condenser 15.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. Furthermore, it should be understood that although the present specification describes embodiments, this does not include only one embodiment, and such description is for clarity only, and those skilled in the art should be able to make the specification as a whole, and the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art.
Claims (10)
1. A double-inlet coupling pulse flow enhanced membrane distillation system is characterized in that: comprises a hot feed liquid circulating subsystem and a penetration condensing subsystem; the hot feed liquid circulation subsystem comprises a feed liquid tank (2), a heater (3), a waveform generator (11) and a membrane assembly (12); a hydrophobic porous membrane (12B) is arranged in the membrane component (12), the membrane component is provided with two inlet passages, and the two inlet passages are respectively provided with an electromagnetic valve A (9) and an electromagnetic valve B (10) which are controlled by a waveform generator (11); the feed liquid in the feed liquid tank (2) is heated by a heater (3), and then forms two hot feed liquids with two flowing waveforms under the action of a waveform generator (11), an electromagnetic valve A (9) and an electromagnetic valve B (10), then the two hot feed liquids enter a membrane assembly (12) to generate convection collision, and after being filtered and blocked by a hydrophobic porous membrane (12B) in the membrane assembly (12), the retained hot feed liquid flows back into the feed liquid tank (2), and the hot feed liquid enters a penetration and condensation subsystem through evaporation components of the hydrophobic porous membrane (12B).
2. The dual inlet coupled pulsed flow enhanced membrane distillation system according to claim 1, wherein: the waveform generator (11) is a pulse waveform generator, and the generated waveform comprises sine waves, triangular waves and step waves.
3. The dual inlet coupled pulsed flow enhanced membrane distillation system according to claim 1, wherein: the two inlet passages of the membrane module (12) are arranged symmetrically with respect to the plane in which their outlet passages lie.
4. The dual inlet coupled pulsed flow enhanced membrane distillation system according to claim 3, wherein: the angles of two inlet passages of the membrane module (12) can be adjusted, and the adjustment range is 20-50 degrees.
5. The dual inlet coupled pulsed flow enhanced membrane distillation system according to claim 1, wherein: and a feed liquid pump A (7) and a feed liquid pump B (8) are respectively arranged on the two inlet passages of the membrane module (12) and are respectively positioned at the upstream of the electromagnetic valve A (9) and the electromagnetic valve B (10) so as to pump hot feed liquid into the membrane module (12).
6. The dual inlet coupled pulsed flow enhanced membrane distillation system according to claim 1, wherein: an inlet temperature sensor (5) and an outlet temperature sensor (16) are respectively arranged on two sides of the membrane module (12) and used for detecting the temperature of the feed liquid entering and exiting the membrane module (12); and a rotor flow meter (6) is arranged at the upstream of the inlet temperature sensor (5) and is used for adjusting the flow of hot feed liquid entering the membrane component (12).
7. The dual inlet coupled pulsed flow enhanced membrane distillation system according to claim 1 or 3, wherein: the hydrophobic porous membrane (12 b) in the membrane component (12) is a flat membrane made of polytetrafluoroethylene materials, and the inner cavity of the membrane component (12) is divided into a feed liquid side and a permeation side; the two inlets and the two outlets of the membrane component (12) are positioned on the feed liquid side; an exhaust valve (12 a) is arranged above the membrane module (12) and used for exhausting gas in the membrane module (12).
8. The dual inlet coupled pulsed flow enhanced membrane distillation system according to claim 1, wherein: the permeate condenser subsystem comprises a vacuum pump (14) and a condenser (15), wherein the vacuum pump (14) is used for vacuumizing the permeate side of the membrane module (12), and the condenser (15) is used for condensing extracted water vapor.
9. The dual inlet coupled pulsed flow enhanced membrane distillation system according to claim 8, wherein: the penetration condenser subsystem also comprises a buffer tank (13) which is positioned between the vacuum pump (14) and the membrane module (12) and is used for ensuring the smooth operation of the system.
10. The dual inlet coupled pulsed flow enhanced membrane distillation system according to claim 1, wherein: the hot feed liquid circulating system also comprises an electronic balance (1) and a temperature controller (4); the electronic balance (1) is positioned at the bottom of the feed liquid tank (2) and is used for measuring the membrane flux of the membrane component (12); the temperature controller (4) is used for controlling the heating temperature of the heater (3), and the return difference is set to be 0.2-0.4 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911243867.9A CN110860207A (en) | 2019-12-06 | 2019-12-06 | Double-inlet coupling pulse flow enhanced membrane distillation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911243867.9A CN110860207A (en) | 2019-12-06 | 2019-12-06 | Double-inlet coupling pulse flow enhanced membrane distillation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110860207A true CN110860207A (en) | 2020-03-06 |
Family
ID=69658665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911243867.9A Pending CN110860207A (en) | 2019-12-06 | 2019-12-06 | Double-inlet coupling pulse flow enhanced membrane distillation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110860207A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103623705A (en) * | 2013-11-15 | 2014-03-12 | 华南理工大学 | Device and method for strengthening filtering of internal-pressure membrane by using pulsed electric field |
| CN104474906A (en) * | 2014-11-28 | 2015-04-01 | 海南师范大学 | Method for controlling membrane pollution in pulse feed mode |
| CN105233695A (en) * | 2015-10-28 | 2016-01-13 | 新奥科技发展有限公司 | Membrane distillation device and membrane distillation system |
| US20160240870A1 (en) * | 2013-09-30 | 2016-08-18 | Kolon Industries, Inc. | Fluid exchange membrane module |
| CN106995228A (en) * | 2017-06-14 | 2017-08-01 | 海南师范大学 | A kind of membrane distillation method and distilling apparatus of high concentration salt solution |
| CN208852712U (en) * | 2018-06-22 | 2019-05-14 | 南京航空航天大学 | The pressure drops arranging system such as a kind of more membrane components and compressor |
-
2019
- 2019-12-06 CN CN201911243867.9A patent/CN110860207A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160240870A1 (en) * | 2013-09-30 | 2016-08-18 | Kolon Industries, Inc. | Fluid exchange membrane module |
| CN103623705A (en) * | 2013-11-15 | 2014-03-12 | 华南理工大学 | Device and method for strengthening filtering of internal-pressure membrane by using pulsed electric field |
| CN104474906A (en) * | 2014-11-28 | 2015-04-01 | 海南师范大学 | Method for controlling membrane pollution in pulse feed mode |
| CN105233695A (en) * | 2015-10-28 | 2016-01-13 | 新奥科技发展有限公司 | Membrane distillation device and membrane distillation system |
| CN106995228A (en) * | 2017-06-14 | 2017-08-01 | 海南师范大学 | A kind of membrane distillation method and distilling apparatus of high concentration salt solution |
| CN208852712U (en) * | 2018-06-22 | 2019-05-14 | 南京航空航天大学 | The pressure drops arranging system such as a kind of more membrane components and compressor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101659451B (en) | Method for treating high-salt water by air stripping type membrane distillation | |
| CN105936522A (en) | Structure compact type seawater desalination device | |
| CN106241961A (en) | A kind of water treatment facilities utilizing residual heat of electric power plant and method | |
| CN107434327B (en) | Hot film coupling seawater desalination system for recovering residual heat, residual pressure and residual water | |
| CN108640389A (en) | The method and micro-nano bubble-vacuum membrane distillation for handling waste water desalination couple desalination system | |
| CN109985536B (en) | g-C3N4-PVDF composite membrane, preparation method and application | |
| Wang et al. | Novel design of liquid distributors for VMD performance improvement based on cross-flow membrane module | |
| CN108947084A (en) | A kind of distillation device slowing down inorganic fouling membrane using impulse electric field | |
| CN106943877B (en) | Device for optimizing membrane distillation process by using swirl flow | |
| CN106995228B (en) | Membrane distillation method and distillation device for high-concentration brine | |
| CN110860207A (en) | Double-inlet coupling pulse flow enhanced membrane distillation system | |
| CN203112541U (en) | Seawater desalter for flue gas waste heat recovery of marine turbine | |
| CN106241924B (en) | A kind of power plant's sea water desalination processing unit and method | |
| CN210904991U (en) | High-efficient enrichment facility of low temperature evaporation | |
| CN207760080U (en) | A kind of voltage stabilizing opposing steam flow agitation vacuum membrane distillation Waste water concentrating reducing device | |
| GB1047100A (en) | Processing a liquid stream under reduced pressure | |
| CN209076074U (en) | A kind of system for strengthening quasi saturation NaCl solution injection flash distillation and crystallization | |
| CN105417609A (en) | Method for adjusting dissolved gases in boiler feed water | |
| CN103145207B (en) | Sea water desalting device for twin-stage recovery of flue gas waste heat of marine steam turbine | |
| RU64200U1 (en) | DISTILLER | |
| CN201187012Y (en) | Multifunctional papermaking black liquor vacuum concentration apparatus | |
| CN209196830U (en) | A kind of boiler supply water deaerating processing system | |
| CN112919660A (en) | Air-blowing type ship cooling seawater desalination system and method | |
| CN106219855A (en) | Direct Air-cooled Unit recuperation of heat and water treatment facilities and recuperation of heat and method for treating water | |
| CN210001614U (en) | high-salt industrial wastewater external circulation evaporation separation complete equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200306 |