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32results about How to "Watered down realization" patented technology

Portable photo-thermal seawater desalination hollow fiber membrane, preparation method, device and application

The invention discloses a portable photo-thermal seawater desalination hollow fiber membrane, a preparation method, a device and application. The preparation method comprises the following steps: 1) dispersing and dissolving a hydrophilic polymer and nano-particles in a buffer solution with the pH value of 8.5 to prepare a uniform solution, circularly washing the hollow fiber membrane with the uniform solution for 1-24 hours, and conducting cleaning and drying for later use to prepare the hollow fiber membrane with the super-hydrophilic inner surface, wherein the ratio of the hydrophilic polymer to the nano-particles is (1-20):(0-20); and (2) putting the hollow fiber membrane with the super-hydrophilic inner surface obtained in the step (1) in 0.1-20wt% photo-thermal modified material solution atmosphere, and conducting treating for 1-24 hours in manners of surface adsorption, surface vapor deposition, surface cross-linking fixation, suction filtration and / or coating modification, so as to prepare the hollow fiber membrane with the super-hydrophilic inner surface and the photo-thermal outer surface. The three-dimensional hollow fiber membrane is selected as a base material, and the photo-thermal seawater desalination hollow fiber membrane obtained through inner / outer surface modification can realize photo-thermal seawater desalination.
Owner:ZHEJIANG UNIV

Waste heat electricity-water coproduction system

InactiveCN104445481AWatered down realizationImprove the problem of low thermal efficiencyGeneral water supply conservationSeawater treatmentElectric powerSeawater
The invention discloses a waste heat electricity-water coproduction system. The water heat electricity-water coproduction system comprises a low-temperature Rankine cycle power generation system and a steam exhaust seawater desalting system. An energy staircase-type utilization system for generating the electric power by utilizing the primary waste heat and desalting the seawater by utilizing the secondary waste heat can be realized by utilizing a great amount of exhaust steam and smoke discharged from enterprises such as iron and steel, cement and petroleum chemistry. The waste heat electricity-water coproduction system is characterized in that the low-temperature seawater desalting technology for establishing a vacuum environment by utilizing the water column height and sucking the seawater by utilizing the capillary force is combined with the low-temperature Rankine cycle power generation. In the seawater desalting system, the discharge of the concentrated salty water utilizes a siphon effect, and the seawater replenishment utilizes the capillary suction force, so that no additional pump power input is needed for operating the desalting system. According to the technical scheme, a seawater desalting evaporator is used for substituting the traditional Rankine circulating condenser, so that the Rankine circulation low-temperature exhaust steam is further recycled, not only is the electricity-water coproduction realized, but also the problem of the low heat efficiency in a waste heat power generation system can be solved, and energy conservation and emission reduction can be realized.
Owner:WUHAN UNIV

Solar seawater desalination system

The invention discloses a solar seawater desalination system which comprises a flotation device, wherein the flotation device is provided with an evaporation device and a water pumping device for conveying seawater into the evaporation device; the evaporation device is connected with a fresh water vessel and comprises a housing and a seawater vessel arranged in the housing; the upper parts of thehousing and the seawater vessel are provided with convex lenses; the top of the seawater vessel is provided with a steam outlet. According to the solar seawater desalination system, twice condensationis realized by virtue of the convex lens at the upper part of the evaporation device and the convex lens at the upper part of the seawater vessel, so that sun-lights are condensed into the seawater vessel so as to heat and evaporate seawater in the seawater vessel, the steam is volatilized outside the seawater vessel through the steam outlet at the top seawater vessel, and the steam is condensated in the housing so as to form fresh water, so that seawater desalination is realized, solar energy is fully utilized, and the power consumption is low. The solar seawater desalination system is applicable to the technical field of seawater desalination.
Owner:四川复海生态环保科技有限责任公司

Wave-energy full-automatic sea water desalting device and realizing method

The invention discloses a wave-energy full-automatic sea water desalting device and a realizing method. The wave-energy full-automatic sea water desalting device includes a wave energy absorbing device, a seawater fetching device, a seawater desalinating system, a fresh water recovery device and a buoyancy tank, wherein the wave energy absorbing device includes there parts, namely, a floating body, a one-way ratchet wheel and an oscillating bar; the seawater fetching device includes rolling shafts and a black water absorption cloth strip; the seawater desalinating system consists of a thermal-insulating inverted U-type transmitting glass cooling cover, a horn-shaped opening and a check valve; the fresh water recovery device includes a fresh water recovery tank, a recovery pipeline and a water storage tank. According to the invention, the seawater fetching device is driven by wave energy absorbed by the floating body, and constantly fetched seawater absorbs thermal energy generated by the irradiation of sunlight, and evaporates to generate vapor, vapor condenses after being cooled, and fresh water is stored in the water storage tank through the fresh water recovery tank; the wave-energy full-automatic sea water desalting device fully utilizes mechanical energy generated when the wave swings, and directly and efficiently utilizes the mechanical energy generated when the wave swings without converting the wave energy into electric energy; the desalted water is good in quality and has no foreign flavor, the entire device needs no complicated power generation and transmission devices, all parts can be mounted simply and conveniently, and the service life is long.
Owner:CHENZHOU ZHIZAO TECH CO LTD

Hydraulic manual seawater desalting device for individual soldier

The invention relates to a hydraulic manual seawater desalting device for an individual soldier. The seawater desalting device comprises a drive structure, a pressurization structure and a reverse osmosis membrane component, wherein the drive structure comprises a drawable grip and a connecting piece; the pressurization structure comprises a light-weight wear-resistant corrosion-resistant pressurization structure shell having a cavity and a connecting hole, and the pressurization structure shell is provided with a seawater inlet pipe and a concentrated water discharge pipe; and the cavity comprises a first cavity and a second cavity which are separated by a partition, and the partition is provided with a partition through hole. According to the invention, the leverage technology, hydraulic technology and membrane process seawater desalting technology are combined; and the seawater desalting device is small in size, light in weight and convenient to carry by an individual soldier, does not need electric power, is labor-saving, efficient, wear-resistant, corrosion-resistant and long in service life, and can easily realize disassembly and replacement of spare parts.
Owner:中国人民解放军广州军区联勤部净水研究所

Method and system for preparing fresh water by using dew condensation temperature difference between seawater and fresh water

The invention provides a method and system for preparing fresh water by using dew condensation temperature difference between seawater and fresh water. The method comprises the following steps: a, heating seawater to 45 to 65 DEG C by using heat exchange heat of a refrigeration apparatus; b, subjecting the heated seawater to primary desalination so as to form low-salinity fog; c, subjecting the low-salinity fog formed by primary desalination to low-temperature dew condensation in a range of 8 to 12 DEG C so as to allow fresh water molecules in the low-salinity fog to become dew through condensation and recovering powdery salt crystal formed uncondensed high-salinity fog; and d, carrying out secondary desalination with a reverse osmosis membrane and active carbon and purifying obtained fresh water until fresh water meets drinking water standards. The system comprises a water pump, a seawater storage container, a seawater heating container, an ultrasonic atomizer, the refrigeration apparatus, a fan and a secondary desalination apparatus. The method provided by the invention has the advantages that energy consumed in the process of seawater desalination is low; the service life of consumables is long; the amount of prepared fresh water is great; secondary pollution is not posed to the marine environment; maintenance cost is low; and the method is suitable for large-scale application.
Owner:HONGMEN ADVANCED TECH CORP

Apparatus for desalinating seawater by utilizing solar energy

The invention relates to the field of seawater treatment, and especially relates to an apparatus for desalinating seawater by utilizing solar energy. The apparatus comprises a base and a water storagetank arranged above the base, and the base and the water storage tank are connected through an annular glass cylinder arranged in an annular mode. The apparatus for desalinating seawater by utilizingsolar energy can utilize solar energy to evaporate seawater and condense the evaporated water vapor by utilizing the seawater in order to achieve seawater desalination, a sea salt collecting device is arranged in the apparatus and can be used for automatically collecting crystallized sea salts, an automatic seawater supply device is arranged in the apparatus and can supplement seawater after theseawater is completely evaporated in order to achieve continuous seawater desalination and avoid the problem of desalination efficiency reduction due to cooling by adding seawater halfway, and a solarenergy storage device is arranged in the apparatus and can provide electric power for the apparatus in order to guarantee that the apparatus is applied in the environment without electric power transmission.
Owner:河北丰越能源科技有限公司

Small manual-electric integrated multi-plunger type seawater desalination machine and seawater desalination method

ActiveCN110937659AAchieving Continuous FadeMeeting fresh water needsGeneral water supply conservationSeawater treatmentWater dischargeWater production
The invention relates to the field of seawater desalination, particularly to a small manual-electric integrated multi-plunger type seawater desalination machine and a seawater desalination method. Thedesalination machine comprises a power end, a water supply end, a filtering end and an energy recovery end, wherein the power end drives the seawater desalination machine to operate in a manual or electric mode, the water supply end is provided with a seawater pressurizing cavity, a first plunger pump, a seawater inlet pipe and a high-pressure water outlet pipe, the seawater inlet pipe and the high-pressure water outlet pipe are communicated with the seawater pressurizing cavity, the energy recovery end comprises a concentrated water pressurizing cavity, a second plunger pump, a concentratedwater discharge pipe and a concentrated water return pipe, the concentrated water discharge pipe and the concentrated water return pipe are communicated with the concentrated water pressurizing cavity, the filtering end comprises a membrane shell, a reverse osmosis membrane assembly, a high-pressure seawater chamber, a concentrated water collecting area, a fresh water chamber and a fresh water receiving pipe. Compared with the traditional desalination machine, the small manual-electric integrated multi-plunger type seawater desalination machine of the invention has characteristics of improvedfresh water production efficiency, integrated design of main components, free switching of manual operation and electric operation, high integration degree, convenient operation and small size, and isconveniently carried by offshore operators.
Owner:自然资源部天津海水淡化与综合利用研究所 +1

Seawater desalination system and desalination method based on solar energy

The invention discloses a seawater desalination system and desalination method based on solar energy. In the desalination system, a second reaction tank is connected with a first reaction tank througha positive ion selective nano-film, an outer pipeline is provided with a first valve for controlling liquid flow, the volumes and concentrations of seawater in the first reaction tank and the secondreaction tank are the same, a first electrode and a second electrode are connected through a first external circuit, a pump is communicated with the second reaction tank and a third reaction tank so as to pump a seawater solution without the positive ion salt from the second reaction tank into the third reaction tank, a fourth reaction tank is connected with the third reaction tank through a negative ion selective nano-film, the third reaction tank is connected with the fourth reaction tank through a second outer pipeline, the second outer pipeline is provided with a third valve for controlling liquid flow, the third reaction tank and the fourth reaction tank have the same seawater solution volume and concentration, the third electrode and the fourth electrode are connected through a second outer circuit, and the fourth reaction tank is provided with a liquid output pipeline.
Owner:XI AN JIAOTONG UNIV

Centrifugal equipment for sea water desalination

The invention discloses centrifugal equipment for sea water desalination. The centrifugal equipment comprises a support, a shell arranged on the support, an outer rotary drum rotatably arranged in theshell, an inner rotary drum arranged in the outer rotary drum and capable of rotating along with the outer rotary drum, a driving mechanism used for driving the outer rotary drum to rotate, an ice crystal dispersing mechanism arranged in the inner rotary drum and a purging mechanism, wherein the ice crystal dispersing mechanism comprises a mounting column and a plurality of trays, the mounting column is connected with the bottom of the inner rotary drum and is internally provided with an air conveying channel, the trays sleeve the hollow mounting column at intervals along a vertical direction, and a plurality of first air spraying holes communicating with the air conveying channel are formed in the upper surfaces of the trays; and the purging mechanism is used for inputting compressed airinto the air conveying channel so as to purge the ice crystals in the inner rotary drum. According to the centrifugal equipment for seawater desalination, separated salt can be rapidly separated fromice crystals by utilizing the dual effects of centrifugal force and compressed air purging, and the salt in seawater is greatly reduced, so seawater desalination is realized.
Owner:无锡中利源环保科技有限公司

Sea water desalination treatment system

The invention relates to a sea water desalination treatment system. The sea water desalination treatment system comprises a plurality of sea water desalination devices. Each sea water desalination device comprises a heat exchange flow channel, a steam channel, porous media and a sea water flow channel. The sea water flow channel is located at the bottom of the sea water desalination device. One end of the sea water flow channel is connected with a sea water inflow pipeline, and the other end of the sea water flow channel is connected with a sea water outflow pipeline. The porous media are located at the position above the sea water flow channel. The heat exchange flow channel is located at the position of the top of the sea water desalination device. The steam channel is located at the position below the heat exchange flow channel. The steam channel is internally provided with a plurality of heat conduction fins. The heat exchange flow channels of the sea water desalination devices are connected through high temperature heat source pipelines. Outlets of the steam channels of the sea water desalination devices are connected with fresh water pipelines. The end of each fresh water pipeline connected with each steam channel is provided with a condenser. The sea water desalination devices are utilized to perform sea water desalination, the sea water desalination efficiency can be improved greatly, the same heat source pipeline can be used for many times, and the production energy is saved.
Owner:RUNHAI ENERGY TECH INC JIANGSU

Sea sand desalination device

The invention discloses a sea sand desalination device. The device comprises a tank body, wherein a first electrolytic tank is arranged in the tank body. A conveying device comprises an obliquely-arranged conveying belt, one end of the conveying belt is arranged in a first electrolytic tank, and the other end extends out of the tank body. A first electrolysis device is arranged in the first electrolytic tank, and comprises a first anode screen plate, a first diaphragm and a first cathode plate which are correspondingly arranged from top to bottom, and the conveying belt is arranged between thefirst anode screen plate and the first cathode plate. The technical scheme is adopted, sea sand is continuously placed on the conveying belt and is output from the liquid to pass through the space between the first anode screen plate and the first cathode plate; chlorides in the sea sand and chlorides diffused into the liquid from the sea sand are electrolyzed to form chloride ions, the chlorideions move towards the first anode screen plate under the action of an electric field, chlorine is formed on the chloride ions and separated from the sea sand, and sea sand desalination is achieved. Compared with a washed sand desalination mode, the device has the advantages that the chloride ion removal effect is good, the treated sea sand is high in quality, less fresh water is used, and water resources are saved.
Owner:GUANGDONG XINLONG OFFSHORE EQUIP TECH CO LTD

Solar photovoltaic photothermal distribution type negative pressure seawater desalination device

The invention discloses a solar photovoltaic photothermal distribution type negative pressure seawater desalination device. A photovoltaic array converts solar energy into electric energy which respectively supplies power to a vacuum pump and a heater through a DC / DC converter, and a controller respectively controls a vacuum pump and a seawater pump according to the signals of a pressure sensor and a liquid level sensor in order to adjust the pressure and the liquid level height of a sweater pool. The seawater pool, a glass cover and a freshwater return tank form a sealing body, the heater is arranged at the bottom of the sweater pool in a sealing manner, the electrified heater heats seawater, evaporated freshwater is condensed on the internal surface of the glass cover, and the condensed freshwater flows to the freshwater return tank, then flows into a freshwater outlet and reaches a freshwater lead-out valve to finally obtain clean freshwater.
Owner:陆玉正

Gas-hydrate-method seawater desalination system

The invention discloses a gas-hydrate-method seawater desalination system. The gas-hydrate-method seawater desalination system has the advantages that gas recycling between a first reaction kettle anda second reaction kettle is achieved, gas hydrate can be generated through gas and seawater so as to achieve seawater desalination to generate desalted water, and seawater desalination degree is increased greatly; a pressurizing system is arranged on a pipeline system, and the pressure of a gas hydration reaction system can be regulated through the piston pressurizing system so as to increase seawater desalination efficiency; in general, the gas hydrate generated by the gas and the seawater is decomposed to obtain the desalted water, seawater desalination is achieved, the seawater desalination effect can be greatly improved by the system, cost can be lowered, and the system is worthy of popularization and application.
Owner:LANZHOU UNIVERSITY OF TECHNOLOGY

Seawater desalination plant and method thereof

The invention discloses a seawater desalination plant and a method thereof. Mechanical operations are carried out by the utilization of renewable new energy resources such as solar energy, wind energy, wave energy or tidal energy, etc. which is rich on the sea surface. Water molecules in seawater are absorbed through a water absorption unit. After being detected through a pressure sensor, the water molecules are pushed to the seawater desalination plant by a push pedal, and the desalinated water molecules are output through a water outlet so as to realize seawater desalination. The seawater desalination plant and the method are simple, efficient and environmentally friendly.
Owner:SHANGHAI MINHANG HIGH SCHOOL

Compressed gas energy storage type membrane distillation seawater desalination system and seawater desalination process thereof

The invention discloses a compressed gas energy storage type membrane distillation seawater desalination system and a seawater desalination process thereof, and belongs to the field of desalination and water treatment. The system comprises a water taking pump, a seawater pretreatment unit, a membrane distillation unit, a heat collection unit, an energy obtaining unit and an energy storage unit. Renewable energy sources such as solar energy and wind energy are used for supplying power and heat, a stable desalination process is realized by combining an energy storage technology and a membrane distillation technology, and the energy utilization efficiency is relatively high; a preheater is used for recovering the waste heat of the strong brine, so that good heat economy is achieved, and good water production flexibility is achieved by controlling the mixed salinity of the desalted water and the strong brine; and the compressed gas energy storage system solves the problems of instability, discontinuity and the like when renewable energy sources are obtained, and can assist the energy storage system in supplying power. The compressed gas energy storage type membrane distillation seawater desalination system is simple and compact in structure, saves physical space, and is simple and convenient to install and maintain.
Owner:XI AN JIAOTONG UNIV

Self-adaptive solar seawater desalination device

The invention relates to a self-adaptive solar seawater desalination device, comprising a case and a seawater tank arranged in the case, wherein a transparent cover is arranged above the case, and anevaporation tank is formed between the transparent cover and the case. The seawater desalination device further comprises a plurality of circulating evaporation assemblies, wherein each circulating evaporation assembly comprises an upper rotating wheel, a lower rotating wheel and a non-woven fabric surrounding the upper rotating wheel and the lower rotating wheel. Seawater is contained in the lower part of the seawater tank; the lower rotating wheels are partially or completely immersed in the seawater; the upper shell of the seawater tank is provided with evaporation windows corresponding tothe mounting positions of the upper rotating wheels; the upper parts of the upper rotating wheels extend out of the evaporation windows and are positioned in the evaporation tank; and the non-woven fabric serves as a carrier of an evaporation medium and surrounds the two corresponding rotating wheels to rotate at a constant speed or in a stepping mode according to design requirements. According tothe invention, seawater desalination circulation reciprocating process is achieved through the circulating evaporation assemblies, working efficiency is further improved through forced condensation circulation design, and the device does not need external energy input or external operation mode adjustment.
Owner:深圳埃吉尔海洋科技有限公司

An island seawater desalination system and method

The invention discloses an island seawater desalting system and method. The island seawater desalting system comprises an electric power supply control system, a diesel engine waste heat recovery system and a low temperature multi-effect distillation system, wherein the electric power supply control system comprises a wind-driven generator and a controller thereof, a diesel generator and a controller thereof, an inverter and master controller; the diesel engine waste heat recovery system comprises a radiator, a heat exchanger and a temperature control three-way flow regulating valve; the low temperature multi-effect distillation system comprises a low temperature multi-effect distiller and a heating water tank. The island seawater desalting system and method disclosed by the invention have the advantages that an island wind / diesel hybrid power generating system focusing on wind generation and assisted by diesel generation is matched, and seawater is desalted through low temperature multi-effect distillation equipment and method; the seawater is desalted through residual wind power when wind power is sufficient, and the seawater is desalted through waste heat of a diesel generator when the wind power is insufficient; the desalting system and method are quite strong in adaptability to instable wind power, and are capable of desalting the seawater under different power supply modes.
Owner:GUANGZHOU INST OF ADVANCED TECH CHINESE ACAD OF SCI

A cogeneration system of waste heat, electricity and water

The invention discloses a waste heat electricity-water coproduction system. The water heat electricity-water coproduction system comprises a low-temperature Rankine cycle power generation system and a steam exhaust seawater desalting system. An energy staircase-type utilization system for generating the electric power by utilizing the primary waste heat and desalting the seawater by utilizing the secondary waste heat can be realized by utilizing a great amount of exhaust steam and smoke discharged from enterprises such as iron and steel, cement and petroleum chemistry. The waste heat electricity-water coproduction system is characterized in that the low-temperature seawater desalting technology for establishing a vacuum environment by utilizing the water column height and sucking the seawater by utilizing the capillary force is combined with the low-temperature Rankine cycle power generation. In the seawater desalting system, the discharge of the concentrated salty water utilizes a siphon effect, and the seawater replenishment utilizes the capillary suction force, so that no additional pump power input is needed for operating the desalting system. According to the technical scheme, a seawater desalting evaporator is used for substituting the traditional Rankine circulating condenser, so that the Rankine circulation low-temperature exhaust steam is further recycled, not only is the electricity-water coproduction realized, but also the problem of the low heat efficiency in a waste heat power generation system can be solved, and energy conservation and emission reduction can be realized.
Owner:WUHAN UNIV

Strong brine treatment system

The invention relates to the technical field of coal chemical strong brine treatment and in particular to a strong brine treatment system which comprises a desalting integral device and a sterilization device, wherein the desalting integral device comprises a shell and a partition plate which is arranged in the shell and is used for partitioning the shell into a precipitation zone and an evaporation dialysis zone; through holes are formed in the partition plate; a guide tube is arranged at the bottom of the shell; the outlet of the guide tube is positioned in the precipitation zone; an anode plate and a cathode plate are oppositely arranged on the inner wall of the shell and in the evaporation dialysis zone; a plurality of anion exchange membranes and cation exchange membranes are sequentially arranged between the anode plate and the cathode plate; fresh water chambers or concentrated water chambers are formed between the cation exchange membranes and adjacent anion exchange membranesthereof; the partition plate is internally provided with heating resistance wires; a plurality of condensing plates are additionally arranged above the area of the anion exchange membrane and the cation exchange membranes; the plurality of the condensing plates form waveforms; the highest points of the waveforms are positioned above the concentrated water chambers; the lowest points of the waveforms are positioned above the fresh water chambers. The strong brine treatment system has the characteristics that strong brine treatment procedures can be simplified, and treatment energy consumption can be reduced.
Owner:新疆诺曼科技有限公司

Asymmetric membrane with pore size, preparation method, and application in seawater desalination

The invention belongs to the technical field of lithium battery diaphragms, and in particular relates to a diaphragm with an asymmetric pore size, a preparation method, and an application in seawater desalination. The diaphragm with asymmetric pore size includes: a diaphragm with multi-layer microporous structure; the microporous structure on the upper and lower surface layers of the diaphragm has unequal pore diameter. When seawater passes through the diaphragm, the microporous structure of the upper surface layer of the diaphragm is suitable for water molecules and dissolved oxygen to pass through smoothly, but it will block impurities, bacteria and macromolecular salts in seawater, and obtain drinkable fresh water on the lower surface layer of the diaphragm. Seawater desalination is realized, that is, the membrane with asymmetric pore size can be used as a seawater desalination reverse osmosis membrane and applied to seawater desalination.
Owner:JIANGSU HORIZON NEW ENERGY TECH CO LTD

Portable photothermal seawater desalination hollow fiber membrane, preparation method, device and application

The invention discloses a portable photothermal seawater desalination hollow fiber membrane, a preparation method, a device and an application. The preparation method includes step 1): dispersing and dissolving hydrophilic polymers and nanoparticles in a buffer solution with a pH of 8.5 It is configured as a homogeneous solution in which the ratio of hydrophilic polymer:nanoparticles is 1-20:0-20, and the hollow fiber membrane is flushed with the homogeneous solution for 1-24 hours, and then cleaned and dried for later use to obtain super-hydrophilic hollow membranes on the inner surface. Fiber membrane; step 2): placing the super-hydrophilic hollow fiber membrane on the inner surface obtained in step 1) in an atmosphere of 0.1 to 20 wt% photothermal modification material solution through surface adsorption, surface vapor deposition, surface crosslinking, Suction filtration and / or coating modification are treated for 1-24 hours to prepare a hollow fiber membrane with super-hydrophilic inner surface and photothermal function on the outer surface. The present invention selects a three-dimensional hollow fiber membrane as a base material, and the photothermal seawater desalination hollow fiber membrane obtained through inner / outer surface modification can realize photothermal seawater desalination.
Owner:ZHEJIANG UNIV

Distillation type seawater desalination device

The invention provides a distillation type seawater desalination device, and belongs to the technical field of seawater desalination equipment. The device comprises a heat collection cover, a heat insulation cover, a heated cover and a water collection tank, the heat insulation cover is located on the inner side of the heat collection cover, the heated cover is located on the inner side of the heat insulation cover, the heat insulation cover is fixedly connected with the heated cover, a volatilization cavity is formed between the heat insulation cover and the heated cover, the outer edge of the heat collection cover is fixedly connected with a tapered separating cylinder, the separating cylinder is tapered with an upper end diameter smaller than the lower end diameter, a heat preservationcylinder is fixedly connected to the outer edge of the heat insulation cover, a plurality of breathing holes are formed in the circumferential face of the heat preservation cylinder, a filling base isconnected to the lower end of the heat preservation cylinder, a plurality of biconvex lenses are arranged on the heat collection cover, the biconvex lenses are lenses, the heat collection cover is made of transparent materials, the heat insulation cover is made of light-permeable materials from outside to inside, and the biconvex mirror is focused on the outer wall of the heated cover after beingirradiated by sunlight. The seawater desalination device has the advantages that seawater can be efficiently desalinated in a maintenance-free manner and the like.
Owner:范存璐

Wave-energy full-automatic sea water desalting device and realizing method

The invention discloses a wave-energy full-automatic sea water desalting device and a realizing method. The wave-energy full-automatic sea water desalting device includes a wave energy absorbing device, a seawater fetching device, a seawater desalinating system, a fresh water recovery device and a buoyancy tank, wherein the wave energy absorbing device includes there parts, namely, a floating body, a one-way ratchet wheel and an oscillating bar; the seawater fetching device includes rolling shafts and a black water absorption cloth strip; the seawater desalinating system consists of a thermal-insulating inverted U-type transmitting glass cooling cover, a horn-shaped opening and a check valve; the fresh water recovery device includes a fresh water recovery tank, a recovery pipeline and a water storage tank. According to the invention, the seawater fetching device is driven by wave energy absorbed by the floating body, and constantly fetched seawater absorbs thermal energy generated by the irradiation of sunlight, and evaporates to generate vapor, vapor condenses after being cooled, and fresh water is stored in the water storage tank through the fresh water recovery tank; the wave-energy full-automatic sea water desalting device fully utilizes mechanical energy generated when the wave swings, and directly and efficiently utilizes the mechanical energy generated when the wave swings without converting the wave energy into electric energy; the desalted water is good in quality and has no foreign flavor, the entire device needs no complicated power generation and transmission devices, all parts can be mounted simply and conveniently, and the service life is long.
Owner:CHENZHOU ZHIZAO TECH CO LTD

Method and device for desalting seawater or brackish water

The invention relates to the technical field of desalting of seawater or brackish water, and discloses a method for desalting seawater or brackish water. The method includes S1, blowing wet carrier gas through the seawater or brackish water and humidifying the seawater or brackish water until the seawater or brackish water is saturated; S2, absorbing moisture in the wet carrier gas by a material with electro-endosmosis and moisture absorption abilities; and S3, realizing an electro-endosmosis effect in the material with the electro-endosmosis and moisture absorption abilities by the aid of an electric field generated by a cathode and an anode, and draining the moisture absorbed by the material in a liquid form to obtain liquid fresh water. By the aid of the method, the purpose of desalting the brackish water effectively and continuously at low cost can be achieved, required external voltage is low due to operation under constant pressure, large quantities of latent heat of vaporization provided by heating and condensing links for water vapor are omitted, and energy conservation potential is remarkable; water which is a raw material does not need to be pretreated, scaling tendency of equipment is low, and the equipment is applicable to different types of water; and the equipment is installed flexibly and is convenient to operate and maintain.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI

A small flashlight integrated multi-plunger type seawater desalination machine and seawater desalination method

ActiveCN110937659BAchieving Continuous FadeMeeting fresh water needsGeneral water supply conservationSeawater treatmentWater dischargeWater production
The invention relates to the field of seawater desalination, particularly to a small manual-electric integrated multi-plunger type seawater desalination machine and a seawater desalination method. Thedesalination machine comprises a power end, a water supply end, a filtering end and an energy recovery end, wherein the power end drives the seawater desalination machine to operate in a manual or electric mode, the water supply end is provided with a seawater pressurizing cavity, a first plunger pump, a seawater inlet pipe and a high-pressure water outlet pipe, the seawater inlet pipe and the high-pressure water outlet pipe are communicated with the seawater pressurizing cavity, the energy recovery end comprises a concentrated water pressurizing cavity, a second plunger pump, a concentratedwater discharge pipe and a concentrated water return pipe, the concentrated water discharge pipe and the concentrated water return pipe are communicated with the concentrated water pressurizing cavity, the filtering end comprises a membrane shell, a reverse osmosis membrane assembly, a high-pressure seawater chamber, a concentrated water collecting area, a fresh water chamber and a fresh water receiving pipe. Compared with the traditional desalination machine, the small manual-electric integrated multi-plunger type seawater desalination machine of the invention has characteristics of improvedfresh water production efficiency, integrated design of main components, free switching of manual operation and electric operation, high integration degree, convenient operation and small size, and isconveniently carried by offshore operators.
Owner:自然资源部天津海水淡化与综合利用研究所 +1

Method and system for preparing fresh water by utilizing temperature difference between seawater and fresh water condensation

The invention provides a method and system for preparing fresh water by using dew condensation temperature difference between seawater and fresh water. The method comprises the following steps: a, heating seawater to 45 to 65 DEG C by using heat exchange heat of a refrigeration apparatus; b, subjecting the heated seawater to primary desalination so as to form low-salinity fog; c, subjecting the low-salinity fog formed by primary desalination to low-temperature dew condensation in a range of 8 to 12 DEG C so as to allow fresh water molecules in the low-salinity fog to become dew through condensation and recovering powdery salt crystal formed uncondensed high-salinity fog; and d, carrying out secondary desalination with a reverse osmosis membrane and active carbon and purifying obtained fresh water until fresh water meets drinking water standards. The system comprises a water pump, a seawater storage container, a seawater heating container, an ultrasonic atomizer, the refrigeration apparatus, a fan and a secondary desalination apparatus. The method provided by the invention has the advantages that energy consumed in the process of seawater desalination is low; the service life of consumables is long; the amount of prepared fresh water is great; secondary pollution is not posed to the marine environment; maintenance cost is low; and the method is suitable for large-scale application.
Owner:HONGMEN ADVANCED TECH CORP

Thermodynamic system for comprehensive utilization of latent heat of exhaust steam of steam turbine

The invention discloses a turbine dead steam latent heat comprehensive utilization thermodynamic system which comprises a turbine, generators and a condenser hot well, wherein an exhaust opening at one end of the turbine is connected with the condenser hot well; the condenser hot well is connected with a condenser; the condenser is connected with a condensed water distributor; one end of the condenser is connected with a low-temperature multi-effect structure; the other end of the condenser is connected with seawater; seawater is desalinated through the low-temperature multi-effect structure; the low-temperature multi-effect structure is connected with the condensed water distributor and a concentrated seawater discharging pipeline; the condensed water distributor discharges part of fresh water; an extracting opening is formed in the left side of the turbine; the extracting opening and the exhaust opening are connected with the air inlet of a steam ejector respectively; the air outlet of the steam ejector is connected with the air inlet of the low-temperature multi-effect structure; mixed steam is adopted as a heat source for seawater desalination. The turbine dead steam latent heat comprehensive utilization thermodynamic system utilizes the condenser dead steam latent heat resource and solves the problems that a power plant needs to invest a lot of fund to establish a cooling device and waste is caused by electric energy application.
Owner:POWERCHINA SEPCO1 ELECTRIC POWER CONSTR CO LTD
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