CN103172189A - Device for generating power by utilizing osmosis energy - Google Patents
Device for generating power by utilizing osmosis energy Download PDFInfo
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- CN103172189A CN103172189A CN2013101201906A CN201310120190A CN103172189A CN 103172189 A CN103172189 A CN 103172189A CN 2013101201906 A CN2013101201906 A CN 2013101201906A CN 201310120190 A CN201310120190 A CN 201310120190A CN 103172189 A CN103172189 A CN 103172189A
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Abstract
The invention relates to a device for generating power by utilizing osmosis energy. The device adopts the principle of pressure-reducing osmosis for power generation, and is characterized in that seawater with high osmosis energy is introduced into a membrane component, fresh water enters one side of the seawater through an osmosis membrane under the action of osmotic pressure so as to obtain high-pressure diluted seawater; and one part of the high-pressure diluted seawater is used for recovering the water pressure, and the other part of the high-pressure diluted seawater is used for generating power. The device has the advantages that the influence of the performance of the membrane on the power generation is extremely large, a self-made membrane component capable of eliminating concentration polarization and a self-made forward osmosis membrane with high osmosis flux are adopted as a core of the membrane component, the power-generating power can reach 3-4W/m<2>, and the industrial application value is large.
Description
Technical field
The present invention relates to a kind of device that utilizes the osmotic energy generating, is the device that adopts self-control forward osmosis membrane and membrane module generating.
Background technology
Along with the development of global economy, the energy and environment problem is aggravated gradually, and green energy resource receives increasing concern.1954, R.E.Pattle took the lead in proposing the concept in salinity gradient energy source, also is referred to as osmotic energy; According to statistics, the about 1655TWh/ of osmotic energy in the whole world.The technology that osmotic energy can be extracted at present mainly contains two kinds: based on the decompress osmosis of penetration theory and the anti-electrodialysis of utilization dialysis principle, Europe and the U.S. are generating electricity to decompress osmosis and are carrying out deep research recently.
The osmotic energy generating is the rule according to the continuous seeking balance of the Nature, utilizes the different concns of liquid to produce electric power, is another novel environmental protection generation technology after wind-force, solar electrical energy generation, and is not subjected to the impact of weather.The decompress osmosis electricity generating principle is: when seawater and fresh water flow through respectively the both sides of semi-permeable membranes, fresh water will see through semi-permeable membranes and arrive the seawater side under the effect of osmotic pressure, and make the seawater wall pressure raise, can change a large amount of free energies of mixing into electric energy by energy conversion device.
Membrane separation technique is a kind of efficient separation, concentrated, purification and purification techniques, and is rapid in development in recent years, is used widely in fields such as chemical industry, biology, medicine, food, environment protection.Compare with conventional separation methods such as distillation, evaporation, crystallizations, membrane sepn has that energy consumption is low, process is simple, advantages of environment protection, is listed in one of new and high technology that 21 century gives priority to.At present membrane separation technique comprises micro-filtration, ultrafiltration, nanofiltration, reverse osmosis, just infiltration, electrodialysis, gas separation membrane etc., and the positive process of osmosis that wherein is applied to sea water desaltination has the characteristics such as the low and antipollution of energy consumption, and application prospect is very wide.Just permeating and referring to that water or other solvent see through natural or artificial semi-permeable membranes, be delivered to the process of high solute concentration side by low solute concentration side, it is a kind of physical phenomenon that occurring in nature extensively exists, in recent years, just infiltration technology is just receiving increasing the concern and attention at home and abroad, and relevant research and application are fast-developing.
The invention provides a kind of device that utilizes the osmotic energy generating, this laboratory self-control forward osmosis membrane is the core of this device membrane module, its performance direct relation generating efficiency, and the membrane module of this device has effectively been subdued concentration polarization, has improved generating efficiency.
Summary of the invention
The object of the present invention is to provide a kind of device that utilizes the osmotic energy generating, is the device that adopts self-control forward osmosis membrane and membrane module generating.
Technical scheme of the present invention is to utilize the osmotic energy generating, its device is mainly by membrane module, pressure exchanger, generator consists of, it is characterized in that seawater enters pressure exchanger through transferpump (1) and boosts, then compressed pump (3) transfers to microfiltration membrane (4) tube side that required pressure enters membrane module, and then seawater sees through microfiltration membrane (4) and enters the membrane module shell side under differential pressure action; Simultaneously with fresh water in transferpump (5) is introduced permeable membrane (7) tube side of membrane module, fresh water sees through permeable membrane and enters the membrane module shell side under the effect that penetration of sea water is pressed; By flow control valve (8), the high pressure dilute seawater part in shell side enters pressure exchanger and is used for pressure-exchange, and another part enters and is used for generating in pipeline (10).
Described film device shell fluid flow be the high pressure dilute seawater that still has than high osmotic pressure, the seawater working pressure must not be higher than osmotic pressure, so that fresh water constantly enters the high-tension side seawater from low-tension side.
Described membrane module is composed in parallel by tubular fibre forward osmosis membrane and hollow fiber microfiltration membrane, can effectively subdue the concentration polarization phenomenon.
After described generating, the pressure of dilute seawater is normal pressure.
The described high pressure dilute seawater pressure after pressure-exchange that enters pressure exchanger is normal pressure
Described generated energy and film properties are closely related, and the membrane permeation flux is higher, and the salt rejection is higher, and generating efficiency is higher.
The pressure of described pipeline (10) inner high voltage dilute seawater is higher, flow is larger, and generated energy is larger; The pressure height often causes the impellent of positive process of osmosis to reduce, and flow reduces; So pressure and the flow of the high pressure dilute seawater in pipeline in this device (10) are negative correlativing relations, experiment condition need to be optimized according to film properties and reach optimal power generation.
The invention provides a kind of device that utilizes the osmotic energy generating, forward osmosis membrane is the core of this device, its performance direct relation generating efficiency, and the membrane module of this device has the concentration polarization of subduing effect, has improved generating efficiency.
Description of drawings
Fig. 1 osmotic energy generating device figure.
In figure: (1)-seawater transferpump; (2), (8), (9)-flow control valve; (3)-compression pump; (4)-microfiltration membrane; (5)-fresh water transfer pump; (6)-under meter; (7)-forward osmosis membrane; (10)-pipeline; The direction of arrow is liquid flow direction.
Embodiment
The below illustrates the embodiment relevant with the present invention with embodiment, is only the limited example that embodiment of the present invention are described, does not limit the scope of the invention.Four corner of the present invention is embodied in every claim of front.
Embodiment 1
Referring to Fig. 1, forward osmosis membrane (7) adopts homemade forward osmosis membrane, its area 10m
2Seawater salt mass concentration is 3%, flow is 200L/h.The adjust flux control valve is 200L/h to the flow of current (10), and the pressure of current (10) is 1MPa, and power is equivalent to 50J/s; Pump total energy consumption power is 15W.
Referring to Fig. 1, forward osmosis membrane (7) adopts homemade forward osmosis membrane, its area 10m
2Seawater salt mass concentration is 3%, flow is 200L/h.The adjust flux control valve is 250L/h to the flow of current (10), and the pressure of current (10) is 0.7MPa, and power is equivalent to 42J/s; If the generating efficiency of waterpower is 90% electrogenesis power is 37W.
Referring to Fig. 1, forward osmosis membrane (7) adopts homemade forward osmosis membrane, its area 5m
2Seawater salt mass concentration is 3%, flow is 150L/h.The adjust flux control valve is 110L/h to the flow of current (10), and the pressure of current (10) is 1.1MPa, and power is equivalent to 31J/s; If the generating efficiency of generator is 60% electrogenesis power is 19W.
Referring to Fig. 1, forward osmosis membrane (7) adopts homemade forward osmosis membrane, its area 10m
2Seawater salt mass concentration is 3%, flow is 150L/h.The adjust flux control valve is 170L/h to the flow of current (10), and the pressure of current (10) is 0.9MPa, and power is equivalent to 38J/s.
Claims (7)
1. device that utilizes osmotic energy generating, it is characterized in that seawater enters pressure exchanger through transferpump (1) and boosts, then compressed pump (3) transfers to microfiltration membrane (4) tube side that required pressure enters membrane module, and then seawater sees through microfiltration membrane (4) and enters the membrane module shell side under differential pressure action; Simultaneously with fresh water in transferpump (5) is introduced self-control permeable membrane (7) tube side of membrane module, fresh water sees through permeable membrane and enters the membrane module shell side under the effect that penetration of sea water is pressed; By flow control valve (8), the high pressure dilute seawater part in shell side enters pressure exchanger and is used for pressure-exchange, and another part enters and is used for generating in pipeline (10).
2. a kind of device that utilizes osmotic energy generating according to claim 1, what it is characterized in that described film device shell fluid flow is the high pressure dilute seawater that still has than high osmotic pressure, the seawater working pressure must be lower than this osmotic pressure, so that fresh water constantly enters high pressure sea water from low-tension side.
3. a kind of device that utilizes the osmotic energy generating according to claim 1, is characterized in that described membrane module is composed in parallel by tubular fibre forward osmosis membrane and hollow fiber microfiltration membrane, can effectively subdue the concentration polarization on the marine stream direction.
4. a kind of device that utilizes the osmotic energy generating according to claim 1, is characterized in that described high pressure dilute seawater pressure after generator is normal pressure.
5. a kind of device that utilizes the osmotic energy generating according to claim 1, is characterized in that the described high pressure dilute seawater pressure after pressure-exchange that enters pressure exchanger is normal pressure
6. a kind of device that utilizes the osmotic energy generating according to claim 1, is characterized in that described generated energy and film properties are closely related, and the membrane permeation flux is higher, and the salt rejection is higher, and generating efficiency is higher.
7. a kind of device that utilizes the osmotic energy generating according to claim 1, is characterized in that the pressure of described pipeline (10) inner high voltage dilute seawater is higher, flow is larger, and generated energy is larger; The pressure height often causes the impellent of positive process of osmosis to reduce, and flow reduces; So the pressure of the high pressure dilute seawater in pipeline in this device (10) and the relation that flow is negative correlation, experiment condition need to be optimized according to film properties and reach maximum generation power.
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| CN2013101201906A CN103172189A (en) | 2013-04-09 | 2013-04-09 | Device for generating power by utilizing osmosis energy |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603764A (en) * | 2013-11-23 | 2014-02-26 | 华中科技大学 | Staged power generation system and staged power generation method by salt difference energy |
| CN103615363A (en) * | 2013-11-23 | 2014-03-05 | 华中科技大学 | Power generation device and power generation method adopting salinity gradient power |
| CN103726975A (en) * | 2013-12-17 | 2014-04-16 | 浙江理工大学 | Low-grade heat source driven and two-stage infiltration adopted concentration difference working device and method |
| CN104163470A (en) * | 2013-10-17 | 2014-11-26 | 国家海洋局天津海水淡化与综合利用研究所 | Concentrated water energy gradient utilization reverse osmosis seawater desalination method |
| CN106958547A (en) * | 2017-05-10 | 2017-07-18 | 四川大学 | Press stream transformer and pressure retarded osmosis energy electricity generation system |
| CN109538430A (en) * | 2018-12-29 | 2019-03-29 | 河钢股份有限公司 | A kind of device and method to be generated electricity using strong brine |
| CN110272171A (en) * | 2019-07-25 | 2019-09-24 | 江南大学 | A kind of sewage-treatment plant and method of synchronous recycle-water and electric energy |
| WO2019238082A1 (en) * | 2018-06-15 | 2019-12-19 | 毛靖宇 | Method and apparatus for using osmotic heat energy |
| CN114560534A (en) * | 2022-01-19 | 2022-05-31 | 重庆大学 | Power generation and seawater desalination system based on heat penetration principle |
| US11502322B1 (en) | 2022-05-09 | 2022-11-15 | Rahul S Nana | Reverse electrodialysis cell with heat pump |
| US11502323B1 (en) | 2022-05-09 | 2022-11-15 | Rahul S Nana | Reverse electrodialysis cell and methods of use thereof |
| US11855324B1 (en) | 2022-11-15 | 2023-12-26 | Rahul S. Nana | Reverse electrodialysis or pressure-retarded osmosis cell with heat pump |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104163470A (en) * | 2013-10-17 | 2014-11-26 | 国家海洋局天津海水淡化与综合利用研究所 | Concentrated water energy gradient utilization reverse osmosis seawater desalination method |
| CN103615363A (en) * | 2013-11-23 | 2014-03-05 | 华中科技大学 | Power generation device and power generation method adopting salinity gradient power |
| CN103603764B (en) * | 2013-11-23 | 2016-04-13 | 华中科技大学 | Salt error energy classification power generation system and method |
| CN103615363B (en) * | 2013-11-23 | 2016-06-22 | 华中科技大学 | A kind of salt error energy TRT and method |
| CN103603764A (en) * | 2013-11-23 | 2014-02-26 | 华中科技大学 | Staged power generation system and staged power generation method by salt difference energy |
| CN103726975A (en) * | 2013-12-17 | 2014-04-16 | 浙江理工大学 | Low-grade heat source driven and two-stage infiltration adopted concentration difference working device and method |
| CN106958547A (en) * | 2017-05-10 | 2017-07-18 | 四川大学 | Press stream transformer and pressure retarded osmosis energy electricity generation system |
| CN106958547B (en) * | 2017-05-10 | 2018-10-12 | 四川大学 | Press stream transformer and pressure retarded osmosis energy electricity generation system |
| WO2019238082A1 (en) * | 2018-06-15 | 2019-12-19 | 毛靖宇 | Method and apparatus for using osmotic heat energy |
| CN109538430A (en) * | 2018-12-29 | 2019-03-29 | 河钢股份有限公司 | A kind of device and method to be generated electricity using strong brine |
| CN109538430B (en) * | 2018-12-29 | 2024-03-22 | 河钢股份有限公司 | Device and method for generating power by utilizing strong brine |
| CN110272171A (en) * | 2019-07-25 | 2019-09-24 | 江南大学 | A kind of sewage-treatment plant and method of synchronous recycle-water and electric energy |
| CN114560534A (en) * | 2022-01-19 | 2022-05-31 | 重庆大学 | Power generation and seawater desalination system based on heat penetration principle |
| US11502322B1 (en) | 2022-05-09 | 2022-11-15 | Rahul S Nana | Reverse electrodialysis cell with heat pump |
| US11502323B1 (en) | 2022-05-09 | 2022-11-15 | Rahul S Nana | Reverse electrodialysis cell and methods of use thereof |
| US11563229B1 (en) | 2022-05-09 | 2023-01-24 | Rahul S Nana | Reverse electrodialysis cell with heat pump |
| US11611099B1 (en) | 2022-05-09 | 2023-03-21 | Rahul S Nana | Reverse electrodialysis cell and methods of use thereof |
| US11699803B1 (en) | 2022-05-09 | 2023-07-11 | Rahul S Nana | Reverse electrodialysis cell with heat pump |
| US11855324B1 (en) | 2022-11-15 | 2023-12-26 | Rahul S. Nana | Reverse electrodialysis or pressure-retarded osmosis cell with heat pump |
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Application publication date: 20130626 |