CN100455520C - Coupling devices of using nuclear energy for sea water desalination, and method - Google Patents
Coupling devices of using nuclear energy for sea water desalination, and method Download PDFInfo
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- CN100455520C CN100455520C CNB200710099364XA CN200710099364A CN100455520C CN 100455520 C CN100455520 C CN 100455520C CN B200710099364X A CNB200710099364X A CN B200710099364XA CN 200710099364 A CN200710099364 A CN 200710099364A CN 100455520 C CN100455520 C CN 100455520C
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- 239000013535 sea water Substances 0.000 title claims abstract description 153
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000010168 coupling process Methods 0.000 title claims abstract description 22
- 230000008878 coupling Effects 0.000 title claims abstract description 14
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 14
- 238000010612 desalination reaction Methods 0.000 title claims description 89
- 238000011033 desalting Methods 0.000 claims abstract description 65
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 238000004821 distillation Methods 0.000 claims abstract description 53
- 238000007599 discharging Methods 0.000 claims abstract description 9
- 230000008569 process Effects 0.000 claims description 20
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 3
- 239000002826 coolant Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 16
- 238000001816 cooling Methods 0.000 abstract description 3
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- 238000001704 evaporation Methods 0.000 description 11
- 230000008020 evaporation Effects 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 8
- XLYOFNOQVPJJNP-ZSJDYOACSA-N Heavy water Chemical compound [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 4
- 239000012267 brine Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 239000013505 freshwater Substances 0.000 description 4
- 239000000295 fuel oil Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
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- 229910001338 liquidmetal Inorganic materials 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007701 flash-distillation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
This invention relates to coupling apparatus and method for desalting seawater by using nuclear energy. The apparatus comprises: a small-scale nuclear thermal reactor, a reverse osmosis seawater desalting system, a distillation seawater desalting system, and auxiliary apparatus. The method comprises: (1) transferring the heat generated from the small-scale nuclear thermal reactor to the steam generator, and driving the reverse osmosis high-pressure pump with the generated saturated steam in the turbine for seawater desalting; (2) introducing the saturated steam exhausted from the end stage of the turbine to the distillation seawater desalting system for seawater desalting; (3) returning the condensed water to the steam generator; (4) introducing seawater into the distillation seawater desalting system, cooling at the heat discharge section, sending to the reverse osmosis high-pressure pump, pressurizing, sending to the reverse osmosis seawater desalting system, storing the product water in a desalted water tank, and utilizing the condensed seawater or discharging into sea. The method has such advantages as advanced technology, high heat utility, high water productivity and high water quality.
Description
Technical field
The invention belongs to nuclear energy uses and seawater utilization technical field, the particularly coupling process between heat supplying nuclear reactor and the seawater desalination system.
Background technology
Utilizing nuclear reactor to carry out sea water desaltination as energy derive is the key areas that nuclear energy is used.Many in the world countries have carried out the coupling technique research of nuclear reactor and seawater desalination system, obtain a lot of phasic results.Up to the present, Kazakhstan and Japan set up plant-scale nuclear desalination device of actual motion, and India's nuclear desalination demonstration plant is built.These desalimtors are coupled desalination technology and generating nuclear reactor, carry out electric water coproduction.Some countries have also carried out middle-size and small-size nuclear heat supplying pile and desalination process coupled technical study work in the world, but the overwhelming majority also rests on the alternate conceptual design stage.In China, the Coupling Research work of nuclear heat supplying pile that Tsing-Hua University carries out and desalination technology has reached the engineering construction degree of depth, the stage of now be in commercial demonstration reactor construction, realizing industrialization.As nuclear heat supplying pile commercial application pilot project, Yantai, Shandong 160,000 m
3/ d nuclear desalination project has obtained the approval of State Council and former State Planning Commission in 2003, the existing feasibility study that carrying out.
In fact the coupling of nuclear reactor and desalination technology is exactly to utilize the technology of the energy of nuclear reactor generation as the seawater desalination system energy.The energy mode that nuclear reactor provides can be heat energy, mechanical or electrical energy etc., and desalination technology comprises several different methods such as multistage flash evaporation, multi-effect distilling, reverse osmosis, therefore nuclear reactor has many kinds of coupled modes with different energy output modes and different desalination technology couplings.Different coupled modes directly have influence on safe operation, capacity usage ratio, the sea water desaltination of nuclear reactor and seawater desalination system again and produce the economy of water and the quality of desalination water.
The Nuclear Desalination Plant of now having built in the world all is to adopt the part steam of Nuclear power plants generation or the coupling of electric power and desalination technology.Coupled modes comprise utilizes steam turbine for nuclear power station to draw gas and multistage flash evaporation sea water desaltination or low-temperature multiple-effect seawater desalination system, coupled, utilizes the electric power of Nuclear power plants and reverse osmosis seawater desalination system to be coupled.USSR (Union of Soviet Socialist Republics) (showed Kazakhstan in 1973 at She Fuqinke, Aktau) set up first large-scale Nuclear Desalination Plant in the world, be made up of BN-350 liquid metal cooled fast neutron pile, fuel oil thermoelectric power station and distillation sea water desalting device, the design fresh water yield is 120,000 m
3/ d.The technical process of BN-350 reactor, fuel oil thermoelectric power station and seawater desalination system as shown in Figure 1, from the condensing steam turbine 12 acting generatings that promote to draw gas of the steam of oil-firing boiler 11, steam discharge enters condenser 13 and condenses into water and return oil-firing boiler 11, and extracted steam from turbine 14 is used for peripheral region resident's heat supply.The steam driven condensing steam turbine 16 of BN-350 reactor 15 steam-return lines output and counter pressure turbine 17 acting generatings, the steam discharge of condensing steam turbine 16 enters condenser 1-8 and condenses into water and return BN-350 reactor 15 steam-return lines, the steam discharge of counter pressure turbine 17 enters distillation sea water desalting system 110, carries out desalting process for seawater desalination system 110 provides thermal source.Distillation sea water desalting system feeding apparatus 19 are input to seawater in the seawater desalination system 110, fresh water 112 parts of seawater desalination system 110 outputs are used for reactor and oil-firing boiler moisturizing, rest part is used for resident living water, strong brine 111 dischargings of seawater desalination system.Desalimtor's thermal source is provided by the fuel oil thermoelectric power station during nuclear reactor shutdown maintenance.
India Zheng Zai Ka Erpakamu (Kalpakkam) builds a multistage flash evaporation-reverse osmosis hybrid system nuclear desalination demonstration plant, is coupled with 2 * 170MW () PHWR heap (heavy water reactor) that has moved.This desalination plant comprises a water production rate 4500m
3The multistage flash distillation device of/d and a 1800m
3The reverse osmosis unit of/d, required thermal source of multistage flash evaporation system and whole desalination plant required electric power provide by nuclear reactor.This multistage flash evaporation-reverse osmosis nuclear desalination system process as shown in Figure 2, the steam of PHWR reactor 21 steam-return lines output enters steam turbine 22, by generator 23 generatings, the exhaust steam after the acting is cooled to condensed water by plant condenser 24 and returns reactor 21 steam-return lines.Extracting pressure from steam turbine 22 is the low-pressure steam 25 of 0.35MPa, for seawater desalination system provides thermal source.Low-pressure steam 25 through intermediate heat 26 exchange energys after in multistage flash evaporation brine heater 27 the heating raw seawater, heat is passed to multistage flash evaporation seawater desalination system 28, carry out sea water desaltination, by multistage flash evaporation seawater feeding apparatus 29 pending seawater is imported multistage flash evaporation seawater desalination system 28, the product water 210 of multistage flash evaporation seawater desalination system 28 is personal by power plant, and multistage flash evaporation strong brine 211 drains into the sea.Seawater feedwater 216 temperature after water-cooled with seawater loop 217 and moderator-water cooling loop 218 heat exchange raises, and with enter reverse osmosis seawater desalination system 213 after refrigerated sea water 212 from multistage flash evaporation heat extraction section mixes, with rising reverse osmosis system feed temperature, improve system's fresh water yield.The required energy of reverse osmosis seawater desalination system 2-13 is provided by generator, desalination back output reverse osmosis product water 214, reverse osmosis concentrated salt solution 215 dischargings.Intermediate heat 26, multistage flash evaporation brine heater 27, water cooled with seawater loop 217 and moderator-water cooling loop 218 all can be used as the entity isolation barrier between nuclear reactor and the desalination system.
Above-mentioned Nuclear Desalination Plant all is couplings of nuclear power plant and desalination technology.The reactor separate unit power of nuclear power plant is very big, and operating parameters such as temperature, pressure are higher, therefore is unsuitable for building in the place nearer from the city.
Summary of the invention
The objective of the invention is to propose a kind of coupling devices of using nuclear energy for sea water desalination and method thereof, adopt heat supplying nuclear reactor with inherent safety for overcoming the weak point of prior art,, near suitable building in the city.And be coupled, but have advantages such as heat utilization efficiency height, the big supplying water in different qualities of water production rate with most effective, laid down cost is minimum at present reverse osmosis seawater desalting technology and technology maturation, distillation sea water desalting technology low to the raw material seawater water quality requirement, that plant capacity is bigger.
A kind of coupling devices of using nuclear energy for sea water desalination that the present invention proposes, it is characterized in that this equipment comprises: heat supplying nuclear reactor, vapour generator, nuclear reactor intermediate loop recycle pump, steam turbine, reverse osmosis high-pressure pump, reverse osmosis seawater desalination system, seawater service pump, distillation sea water desalting system, condensate pump; Its annexation is: the natural circulation of this small cores process heat reactor heap internal cooling agent is called a loop; Heat supplying nuclear reactor and vapour generator are formed second loop by the pipeline that has the intermediate loop recycle pump; This vapour generator, steam by having the pipeline of condensate pump, constitute the 3rd loop through steam turbine and distillation sea water desalting system; The distillation sea water desalting system links to each other with reverse osmosis seawater desalination system by the reverse osmosis high-pressure pump; The seawater service pump links to each other with the import of distillation sea water desalting system.
The present invention adopts the nuclear desalination coupling process of aforesaid device, it is characterized in that, this method may further comprise the steps:
1) heat that produces in the small cores process heat reactor is delivered to vapour generator by master loop and intermediate loop, and the saturation steam that vapour generator produces at first enters steam turbine and directly drives the reverse osmosis high-pressure pump and carry out reverse osmosis seawater desalting;
2) saturation steam of discharging from steam turbine last stage is introduced the distillation sea water desalting system, as the heating steam of distillation sea water desalting system, carries out distillation sea water desalting; Steam condenses into water after condensate pump is sent vapour generator back in the distillation sea water desalting system, finish a thermodynamic cycle process;
3) raw material seawater enters the distillation sea water desalting system through the seawater service pump, and the product water of distillation sea water desalting system enters desalination water water storage tank or desalination water user, and concentrated seawater enters the sea; The heat extraction section refrigerated sea water of distillation sea water desalting system is delivered to the reverse osmosis high-pressure pump, deliver to reverse osmosis seawater desalination system after the pressurization and carry out desalting process, reverse osmosis product water enters desalination water water storage tank or desalination water user, and concentrated seawater enters the sea by concentrated seawater discharging canal.
Characteristics of the present invention and effect:
The present invention provides a kind of high-efficiency reliable coupled modes for heat supplying nuclear reactor and current state-of-the-art two kinds of desalination technologies.According to the demand of desalination water user to different quality, independent or two kinds of desalination waters mix can satisfy the supplying water in different qualities demand at an easy rate; If directly two kinds of water are mixed for resident living water, then can save the after-treatment system of desalination water, can reduce construction investment and desalination water production cost.The present invention adopts steam turbine directly to drive the reverse osmosis high-pressure pump to carry out the embrane method sea water desaltination, than traditional driven by motor reverse osmosis high-pressure pump system, the present invention had both removed the loss of steam turbine drive generator, also removed the loss of electric motor, improved the utilization ratio of therrmodynamic system, simultaneously also can save generator, electric motor, speed control by frequency variation and equipment for power transmission and distribution, greatly reduce construction investment.The exhaust steam that steam turbine is discharged enters the distillation sea water desalting system and carries out desalting process, has realized the cascade utilization of heat energy, improves the heat utilization efficiency of nuclear reactor greatly.The water inlet of the reverse osmosis seawater desalination system preheating that hot driving is imitated through the distillation sea water desalting system, supply water temperature raises.Because 1 ℃ of the every raising of supply seawater temperature of reverse osmosis seawater desalination system, the water production rate of reverse osmosis seawater desalting can improve 2～3%, so distillation sea water desalting system and reverse osmosis system coupling can the preheating reverse osmosis feedwater, raising system water production rate.Step comprehensive utilization by energy can make the heat utilization efficiency of reactor reach more than 90%, is higher than the heat utilization efficiency of large nuclear power station reactor 35% far away.The present invention is significant for improving nuclear desalination economy and commercial application.
Description of drawings
Fig. 1 is the composition and the processing method synoptic diagram of existing liquid metal cooled fast neutron pile, fuel oil thermoelectric power station and distillation sea water desalting device coupled system.
Fig. 2 is the composition and the processing method synoptic diagram of existing multistage flash evaporation-reverse osmosis hybrid system sea water desalinating plant and heavy water reactor coupled system.
Fig. 3 is hybrid system (reverse osmosis and the distillation method) sea water desalinating plant of the present invention's proposition and the composition and the processing method synoptic diagram of small cores process heat reactor coupled system.
Embodiment
A kind of hybrid system (reverse osmosis and the distillation method) desalination technology that the present invention proposes and the Coupling device of small cores process heat reactor and method reach embodiment in conjunction with the accompanying drawings and are described in detail as follows:
A kind of coupling devices of using nuclear energy for sea water desalination that the present invention proposes is formed as shown in Figure 3, and this equipment comprises: heat supplying nuclear reactor 31, nuclear reactor intermediate loop recycle pump 315, vapour generator 33, steam turbine 34, reverse osmosis high-pressure pump 35, energy recycle device, reverse osmosis seawater desalination system 36, seawater service pump 39, distillation sea water desalting system 312, condensate pump 314; Its annexation is: this heat supplying nuclear reactor 31 is formed second loop with vapour generator 33 by the pipeline that has intermediate loop recycle pump 315; Vapour generator 33, steam by having the pipeline of condensate pump 314, constitute the 3rd loop through steam turbine 34 and distillation sea water desalting system 312; Distillation sea water desalting system 312 links to each other with reverse osmosis seawater desalination system 36 by reverse osmosis high-pressure pump 35; Seawater service pump 39 links to each other with the import of distillation sea water desalting system 312.
The present invention adopts the nuclear desalination coupling process of aforesaid device to specify as follows in conjunction with Fig. 3:
1) heat that produces in the heat supplying nuclear reactor 31 is delivered to vapour generator 33 by intermediate loop 32, and the saturation steam that vapour generator 33 produces at first enters the steam turbine 34 direct reverse osmosis high-pressure pumps 35 that drive and carries out reverse osmosis seawater desalting;
2) saturation steam of discharging from steam turbine 34 final stages is introduced distillation sea water desalting system 312, as the heating steam of distillation sea water desalting system 312, carries out distillation sea water desalting; Steam condenses into water in distillation sea water desalting system 312 after condensate pump 314 is sent vapour generator 33 back to, finishes a thermodynamic cycle process;
3) the former seawater from seawater service pump 39 enters distillation sea water desalting system 312, and the product water 310 of distillation sea water desalting system 312 enters desalination water water storage tank or desalination water user, and concentrated seawater 311 enters the sea; The heat extraction section refrigerated sea water 313 of distillation sea water desalting system 312 is delivered to reverse osmosis high-pressure pump 35, deliver to reverse osmosis seawater desalination system 36 after the pressurization and carry out desalting process, reverse osmosis product water 37 enters desalination water water storage tank or desalination water user, and concentrated seawater 38 enters the sea by concentrated seawater discharging canal.
Embodiment
The equipment of present embodiment is heat supplying nuclear reactor, daily output 250,000 m of 200MW by thermal power
3Hybrid system (reverse osmosis and distillation method) seawater desalination system and utility appliance three parts that constitute by vapour generator, steam turbine, reverse osmosis high-pressure pump, seawater service pump, condensate pump, nuclear reactor intermediate loop recycle pump form, described utility appliance all adopts the conventional equipment (the concrete unit type of selecting for use illustrates) that matches with described heat supplying nuclear reactor, seawater desalination system in following implementation method.
Adopt the nuclear desalination coupling process of aforesaid device may further comprise the steps:
1) heat that produces in the 200MW heat supplying nuclear reactor is delivered to vapour generator by master loop and intermediate loop, the steam that vapour generator produces is 1.5MPa, 198 ℃ saturation steam, steam flow is about 300t/h, saturation steam promotes 8 3MWe industry respectively and drags steam turbine unit (comprise 6 of 40 ℃ of exhaust condensing turbines, 70 ℃ exhaust condensing turbine 2).The residue saturation steam can production plant area be used by oneself.8 industry drags the steam turbine unit and drives 8 reverse osmosis high-pressure pumps respectively and be used for reverse osmosis seawater desalination system;
2) 70 ℃ saturation steam from wherein two 70 ℃ of exhaust condensing turbine final stages discharges enters a cover by the distillation sea water desalting device (low-temperature multi-effect) that 14 single-effect evaporators constitute, and as the heating steam of distillation sea water desalting device, carries out sea water desaltination; Steam condenses into water after condensate pump is sent vapour generator back in the distillation sea water desalting device, finish a thermodynamic cycle process;
3) a part of raw material seawater enters distillation sea water desalting system (low-temperature multi-effect) through service pump, and this distillation sea water desalting system produces water 10,000 m
3/ d can be used as the pure water process water, and its concentrated seawater enters the sea; The feedwater of back as reverse osmosis seawater desalination system mixed in the exhaust steam heating back that another part raw material seawater is discharged through the condensing steam turbine of 40 ℃ of steam discharges with the heat extraction section refrigerated sea water of distillation sea water desalting system, deliver to the pressurization of reverse osmosis high-pressure pump, enter reverse osmosis seawater desalination system then.240,000 m that reverse osmosis seawater desalination system is produced
3/ d fresh water is sent into the desalination water user, and concentrated seawater drains into the sea.
Nuclear reactor power is under the condition of 200MWt in the present embodiment, not only can produce water 250,000 m
3/ d can also provide full factory power supply for station.If adopt nuclear reactor and high temperature multi-effect sea water desaltination coupling technique, system can produce water 160,000 m
3/ d, system produces water 120,000 m perhaps to adopt nuclear reactor and low-temperature multiple-effect seawater desalination to be coupled then
3/ d, these two kinds of coupling techniques all need the outsourcing power supply for station.This shows the production capacity that adopts the present invention to improve the Shandong Nuclear Desalination Plant greatly.Adopt the technology of the present invention, do not provide at the 200MWt nuclear reactor under the situation of power supply for station, then the maximum production capacity of Nuclear Desalination Plant can reach 420,000 m
3More than/the d, not only can the associating regional water supply in a plurality of coastal cities can also be realized, the strategic importance of nuclear desalination can be demonstrated fully for single coastal cities provide water.Adopt the present invention can reduce more than 6,000 ten thousand yuan of facility investments, produce the water cost simultaneously and reduced more than 5%.
Claims (2)
1, a kind of coupling devices of using nuclear energy for sea water desalination, it is characterized in that this equipment comprises: small cores process heat reactor, small cores process heat reactor intermediate loop recycle pump, vapour generator, steam turbine, seawater service pump, reverse osmosis high-pressure pump, reverse osmosis seawater desalination system, distillation sea water desalting system, condensate pump; Its annexation is: the natural circulation of this small cores process heat reactor heap internal cooling agent is called a loop; Small cores process heat reactor and primary side of steam generator are formed second loop by the pipeline that has the intermediate loop recycle pump; Steam generator secondary side, steam turbine and distillation sea water desalting system constitute the 3rd loop by having the pipeline of condensate pump; The distillation sea water desalting system links to each other with reverse osmosis seawater desalination system by the reverse osmosis high-pressure pump; The seawater service pump links to each other with the import of distillation sea water desalting system.
2, a kind of employing nuclear desalination coupling process of equipment according to claim 1 is characterized in that this method may further comprise the steps:
1) heat that produces in the small cores process heat reactor is delivered to vapour generator by intermediate loop, and the saturation steam that vapour generator produces at first enters steam turbine and directly drives the reverse osmosis high-pressure pump and carry out reverse osmosis seawater desalting;
2) saturation steam of discharging from steam turbine last stage is introduced the distillation sea water desalting system, as the heating steam of distillation sea water desalting system, carries out distillation sea water desalting; Steam condenses into water after condensate pump is sent vapour generator back in the distillation sea water desalting system, finish a thermodynamic cycle process;
3) raw material seawater enters the distillation sea water desalting system through the seawater service pump, and the product water of distillation sea water desalting system enters desalination water water storage tank or desalination water user, and concentrated seawater fully utilizes or enter the sea; The heat extraction section refrigerated sea water of distillation sea water desalting system is delivered to the reverse osmosis high-pressure pump, deliver to reverse osmosis seawater desalination system after the pressurization and carry out desalting process, reverse osmosis product water enters desalination water water storage tank or desalination water user, and concentrated seawater fully utilizes or enters the sea by concentrated seawater discharging canal.
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