CN102134137A

CN102134137A - System for irrigating desert by virtue of seawater desalination, power generation and terrestrial heat hydraulic lift

Info

Publication number: CN102134137A
Application number: CN2011100095703A
Authority: CN
Inventors: 任永斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-01-13
Filing date: 2011-01-13
Publication date: 2011-07-27

Abstract

The invention provides a system for irrigating desert by virtue of seawater desalination, power generation and terrestrial heat hydraulic lift. The system mainly consists of a water conduit, a pressure pipeline, a hydropower station, an evaporator, a steam pipeline, a condenser and a water outlet pipe. A water intake is arranged under the sea level so that the pressure of seawater is larger than the osmotic pressure of the seawater; the seawater passes through a reverse osmosis membrane and then is desalted into fresh water; the fresh water is led to a front pool under the ground of a water needing area through the water conduit with a certain gradient so that the pressure pipeline penetrates into the vicinity of the deep underground from the front pool; the hydropower station or multi-stage hydropower station is distributed on the way which is passed by the pressure pipeline; the evaporator is located at the vicinity of the deep underground, and tail water obtained after electricity is generated flows into the evaporator; the condenser is distributed at the vicinity of the ground surface, and the evaporator is connected with the condenser through the steam pipeline; and under the action of terrestrial heat, water steam generated by the evaporator enters into the condenser through the steam pipeline so as to be condensed into condensed water which is delivered by a water delivery pipe. In the system, the zero cost of the whole process for delivering water to the desert is achieved by just utilizing natural energy, and extra electric energy is obtained.

Description

A kind of system of the generating underground heat water lift pouring desert that desalinizes seawater

Affiliated technical field

The present invention relates to a kind of system of the generating underground heat water lift pouring desert that desalinizes seawater, especially utilize the pressure of seawater to desalinize seawater, behind the fresh water generation after the desalination, utilize the tail water after the thermal evaporation of subterranean ground of deep layer is generated electricity, make water vapour rise to desert surface, be condensed into the system in water pouring desert again.

Background technology

Sea water desaltination is exactly to remove the salinity in the seawater and the technological process that obtains fresh water, it is the increment technique of increasing income that realizes the water resources utilization, can increase the fresh water total amount, and be not subjected to space-time and weather effect, water quality is good, price is gradually reasonable, can ensure stable water supplies such as coastal resident's tap water and Industrial Boiler moisturizing.At present, the method for desalting seawater in institute river has several different methods such as seawater freezing method, electroosmose process, distillation method, reverse osmosis method, and wherein distillation method, reverse osmosis method are used the extensivelyst, are the main stream approach of present sea water desaltination.

Reverse osmosis method, be a kind of be impellent with the pressure difference, from solution, isolate the membrane separation technique of solvent, this film generally is reverse osmosis membrane, in simple terms, when pure water and salt solution are separated by desirable semi-permeable membranes, desirable semi-permeable membranes only allows water to pass through to stop salt to pass through, this moment, the water of film pure water side can spontaneously inject salt solution one side by semi-permeable membranes, this phenomenon is called infiltration, if exert pressure in the brine side of film, water spontaneous flowed and will be suppressed and slow down so, when applied pressure reaches a certain numerical value, water equals zero by the net discharge of canal of film, this pressure is called seepage water pressure, when the pressure that is applied to the film brine side during greater than seepage water pressure, the flow direction of water will reverse, at this moment, water in the salt solution will flow into the pure water side, above-mentioned phenomenon is exactly the ultimate principle of the reverse-osmosis treated of water, and this principle also is applicable to other solution, and the feed liquid of film one side is exerted pressure, when pressure surpasses its osmotic pressure, solvent can be made inverse osmosis against the direction of naturally osmotic, thus the solvent that obtains seeing through in the low-tension side of film, i.e. penetrating fluid, the high-tension side obtains spissated solution, i.e. concentrated solution.If use the reverse-osmosis treated seawater, obtain fresh water in the low-tension side of film, obtain bittern in the high-tension side.

No matter be reverse osmosis method or distillation method, desalinate a large amount of seawater, all need to consume a large amount of electric energy, the energy of artificial conversion such as mechanical energy, this is energy-conservation in promotion, today of environmental protection, be unworthy advocating, environmental protection utilize nature, the green energy is finished this process, seawater after will desalinating again flows into introduces the underground of desert, has potential energy by fresh water with respect to deep layer more is underground, multistage generator for electricity generation generating is installed uses for human, the tail water that utilizes the subterranean abundant underground heat of deep layer will generate electricity after using again is evaporated to ground, is used to water the desert, native system does not have local the use now in the world, belongs to initiative invention.

Summary of the invention

In order to overcome the shortcoming that the existing technology of desalinizing seawater will spend more energy, and the seawater after the utilization desalination is with respect to the underground characteristics with very big potential energy of deep layer, build the cascade hydropower stations this potential energy is converted into kinetic energy, tail water after utilizing the subterranean underground heat of deep layer generating is evaporated to ground, be condensed into water pouring desert again, the objective of the invention is to utilize complete natural method to finish sea water desaltination, promote steam, condensing steam becomes water of condensation for human use, and the electric energy that has also obtained.

The technical solution adopted for the present invention to solve the technical problems is:

1. intake is located at b.s.l., make the osmotic pressure of the sea pressure at intake place greater than seawater, seawater is desalinated into fresh water after by reverse osmosis membrane, fresh water is guided to the subterranean forebay that needs water ground by the aqueduct that has certain ratio and fall, with pressure pipeline from the forebay be deep into deep layer underground near, in the way of pressure pipeline process, be furnished with the power station.

2. in order to solve the excessive easy damage of pressure pipeline pressure, invest big shortcoming, be furnished with the cascade hydropower stations in the way of pressure pipeline process, the progression in power station is mainly by the decision of head size.

3. be furnished with vaporizer near underground being positioned at deep layer, in the generating tail water inflow evaporator, make the fresh water in the subterranean underground heat heating fumigators of deep layer.

4. near ground, arrange condenser, between vaporizer and condenser, couple together with vapour pipe, under the effect of underground heat, the water vapour that vaporizer produces enters condenser by vapour pipe, under field conditions (factors), steam in the condenser is liquefied as water of condensation, with rising pipe water of condensation is transported to the place that needs water again, is used for human livestock drinking water, process water, pouring desert etc.

Description of drawings

Be brief description of drawings below.

Fig. 1 is a principle of the invention synoptic diagram.

1. seawater among the figure, 2. water-in, 3. reverse osmosis membrane, 4. aqueduct, 5. fresh water, 6. forebay, 7. pressure pipeline, 8. power station, 9. deep layer is underground, 10. vaporizer, 11. steam-pipes, 12. ground, 13. condensers, 14. water of condensation, 15. rising pipes.

Fig. 2 is the multistage power house of a present invention principle schematic.

1. seawater among the figure, 2. water-in, 3. reverse osmosis membrane, 4. aqueduct, 5. fresh water, 6. forebay, 7. pressure pipeline, 8. power station (first order station), 9. deep layer is underground, 10. vaporizer, 11. steam-pipes, 12. ground, 13. condenser, 14. water of condensation, 15. rising pipes, 16. the secondary power station, 17. 3 grades of power stations.

Embodiment

In the embodiment of Fig. 1, Fig. 2, we are that the present invention is further described for example to implement a kind of system that desalinizes seawater generating underground heat water lift pouring desert:

In Fig. 1, seawater 1 enters aqueduct 4 by the reverse osmosis membrane 3 of intake 2, intake 2 is lower than b.s.l., at the sea pressure at intake 2 places osmotic pressure greater than seawater, make seawater 1 become fresh water 5 by reverse osmosis membrane 3, fresh water 5 enters the subterranean forebay 6 that needs water ground and energy demand ground by aqueduct 4, forebay 6 is lower than water-in 2, utilize pressure pipeline 7 that the fresh water in the forebay 6 is guided near the deep layer underground 9, be furnished with power station 8 in the appropriate location of pressure pipeline 7, tail water behind the generator flows near the vaporizer 10 deep layer underground 9, because near the geotemperature the deep layer underground 9 is higher, can be higher than or far above the boiling point of water, so be evaporated in the floods vaporizer 10, water vapour arrives near the condenser 13 that is positioned at the ground 12 by being connected steam-pipe 11 between deep layer underground 9 and the ground 12, in condenser 13, water vapour is liquefied as water of condensation 14, and water of condensation 14 is sent by rising pipe 15, to the place that needs water.

In concrete enforcement, the position of intake 2 will be selected appropriately, at least to guarantee that the sea pressure at water-in 2 places is higher than the osmotic pressure of seawater, so the position of intake 2 may be lower than sea level below tens meters, the length of aqueduct 4, size, than falling according to the water treatment scale, quoting parameter such as flow determines, the size of forebay 6 is according to the water treatment scale, parameters such as generating flow size are determined, pressure pipeline 7 sizes, thickness of pipe is mainly determined by the drop between forebay and the vaporizer, drop is high more, requirement to pressure pipeline is strict more, tube wall is just thick more, vaporizer 10 synoptic diagram that just drawn in the drawings, in reality is implemented, it may be near the pipeline that passes through the deep layer underground 9 with certain-length, be used for evaporation to obtain more geothermal energy, also can make other modes, no matter which kind of mode of employing, it is lower to satisfy cost, the heat absorption efficiency higher requirement, steam-pipe 11 preferably uses insulating pipe, or outside pipeline, use thermal insulation material, make few as far as possible loss of heat of water vapour, condenser 13 synoptic diagram that only drawn in the drawings, can be near the pipeline with certain-length that passes through underground 12 when reality is implemented, also can be the pipeline of exposed ground, or other modes, in order to reduce the fed distance of water, vaporizer 10, be chosen in the underground of the place that needs water most, the underground better of abundant geothermal energy resources arranged certainly, if there not be the geothermal energy resources that enrich, when vaporizer was positioned at the sea level 5000m, the subterranean temperature of this deep layer also had about 160 degrees centigrade.

In Fig. 2, pressure pipeline withstand voltage can't reach requirement or cost is huge when considering high water head, multiple factors such as the high head hydraulic turbine manufacture difficulty is big, in the way of pressure pipeline process, build multistage power house, to reduce the cost of investment of pressure pipeline, different with Fig. 1 is, it with the label among Fig. 1 first step power station, 8 power station as multistage power house, increased power house, the second stage 16, third stage power house 17, identical among rest part and Fig. 1, in reality is implemented, the progression in power station can also increase, and reaches more multistage according to actual needs.Adopted this scheme, desalinizing seawater does not need energy, water power can obtain huge energy, when being risen to ground, water vapour also can emit geothermal energy for people's heating, so native system environmental protection, be fit to very much the needs of desert area generating drinking-water, pouring, process water, use this programme, it is within sight that global desert all becomes the oasis.

Certainly, present method neither be perfect in every way, walks underground entirely such as pipeline, difficulty of construction is big, and laid down cost is high, still, once investment, can be benefited for a long time, working cost is low, and it is not high to divide cost for many years, it is a kind of good method that the arid desert area solves human livestock drinking water, process water, agricultural pouring water, also obtained huge electric energy simultaneously,, can make bleak and desolate desert become the oasis that is fit to human living if implement in global desert area.

Claims

1. system in generating underground heat water lift pouring desert that desalinizes seawater, mainly by aqueduct (4), pressure pipeline (7), power station (8), vaporizer (10), steam-pipe (11), condenser (13), rising pipe (15) is formed, it is characterized in that: intake (2) is located at b.s.l., make sea pressure that intake (2) locates osmotic pressure greater than seawater, seawater (1) is desalinated into fresh water (5) after by reverse osmosis membrane (3), fresh water (5) is guided to the subterranean forebay (6) that needs water ground by the aqueduct (4) that has certain ratio and fall, near pressure pipeline (7) is deep into deep layer underground (9) from the forebay, in the way of pressure pipeline (7) process, be furnished with the power station.

2. the system in a kind of generating underground heat water lift pouring desert that desalinizes seawater as claimed in claim 1, it is characterized in that: the power station of arranging in the way of pressure pipeline (7) process is the cascade hydropower stations.

3. the system in a kind of generating underground heat water lift pouring desert that desalinizes seawater as claimed in claim 2, it is characterized in that: vaporizer (10) is positioned near the deep layer underground (9), in the generating tail water inflow evaporator (10).

4. the system in a kind of generating underground heat water lift pouring desert that desalinizes seawater as claimed in claim 1, it is characterized in that: near ground (12), arrange condenser (13), between vaporizer (10) and condenser (13), couple together with vapour pipe (11), under the effect of underground heat, vaporizer (10) produces water vapour, enters condenser (13) by vapour pipe (11).

5. the system in a kind of generating underground heat water lift pouring desert that desalinizes seawater as claimed in claim 3, it is characterized in that: near ground (12), arrange condenser (13), between vaporizer (10) and condenser (13), couple together with vapour pipe (11), under the effect of underground heat, vaporizer (10) produces water vapour, enters condenser (13) by vapour pipe (11).