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

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.

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.

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.

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.

The invention discloses a seawater desalination system adopting a gas hydrate method. The gas is recycled between the first reaction kettle and the second reaction kettle, so that gas hydrate can be generated from seawater, further desalinated water is generated, seawater desalination is realized, and the seawater desalination degree is greatly improved. Meanwhile, the pressurization system is arranged on the pipeline system, the pressure of the gas hydration reaction system can be adjusted through the piston pressurization system, and then the seawater desalination efficiency is improved. Generally speaking, a gas hydrate is generated from gas and seawater, and then the gas hydrate is decomposed to obtain desalted water, so that the purpose of seawater desalination is achieved. By adopting the scheme, the seawater desalination effect can be greatly improved, the cost is reduced, and the method has popularization and application values.

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.

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.

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.

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.

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.

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.