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115 results about "Triple point" patented technology
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In thermodynamics, the triple point of a substance is the temperature and pressure at which the three phases (gas, liquid, and solid) of that substance coexist in thermodynamic equilibrium. It is that temperature and pressure at which the sublimation curve, fusion curve and the vaporisation curve meet. For example, the triple point of mercury occurs at a temperature of −38.83440 °C and a pressure of 0.2 mPa.
Cryotreatment device and method
InactiveUS7220257B1Reduce adverse reactionsReduced responseStentsOther blood circulation devicesCoronary artery angioplastyPercent Diameter Stenosis
Devices and methods for cooling vessel walls to inhibit restenosis in conjunction with medical procedures such as coronary artery angioplasty. Stenosed vessel walls can be cooled prior to angioplasty, after angioplasty, or both. The invention is believed to inhibit restenosis through cooling to a temperature near freezing, preferably without causing substantial vessel wall cell death. One catheter device includes a distal tube region having coolant delivery holes radially and longitudinally distributed along the distal region. In some devices, holes spray coolant directly onto the vessel walls, with the coolant absorbed into the blood stream. In other embodiments, a balloon or envelope is interposed between the coolant and the vessel walls and the coolant returned out of the catheter through a coolant return lumen. Some direct spray devices include an occlusion device to restrict blood flow past the region being cooled. Pressure, temperature, and ultrasonic probes are included in some cooling catheters. Pressure control valves are included in some devices to regulate balloon interior pressure within acceptable limits. In applications using liquid carbon dioxide as coolant, the balloon interior pressure can be maintained above the triple point of carbon dioxide to inhibit dry ice formation. Some cooling catheters are coiled perfusion catheters supporting longer cooling periods by allowing perfusing blood flow simultaneously with vessel wall cooling. One coiled catheter is biased to assume a coiled shape when unconstrained and can be introduced into the body in a relatively straight shape, having a stiffening wire inserted through the coil strands.
Owner:BOSTON SCI SCIMED INC
Cryotreatment device and method
InactiveUS20070250050A1Reduce adverse reactionsReduced responseStentsOther blood circulation devicesCoronary artery angioplastyPercent Diameter Stenosis
Devices and methods for cooling vessel walls to inhibit restenosis in conjunction with medical procedures such as coronary artery angioplasty. Stenosed vessel walls can be cooled prior to angioplasty, after angioplasty, or both. The invention is believed to inhibit restenosis through cooling to a temperature near freezing, preferably without causing substantial vessel wall cell death. One catheter device includes a distal tube region having coolant delivery holes radially and longitudinally distributed along the distal region. In some devices, holes spray coolant directly onto the vessel walls, with the coolant absorbed into the blood stream. In other embodiments, a balloon or envelope is interposed between the coolant and the vessel walls and the coolant returned out of the catheter through a coolant return lumen. Some direct spray devices include an occlusion device to restrict blood now past the region being cooled. Pressure, temperature, and ultrasonic probes are included in some cooling catheters. Pressure control valves are included in some devices to regulate balloon interior pressure within acceptable limits. In applications using liquid carbon dioxide as coolant, the balloon interior pressure can be maintained above the triple point of carbon dioxide to inhibit dry ice formation. Some cooling catheters are coiled perfusion catheters supporting longer cooling periods by allowing perfusing blood flow simultaneously with vessel wall cooling. One coiled catheter is biased to assume a coiled shape when unconstrained and can be introduced into the body in a relatively straight shape, having a stiffeninig wire inserted through the coil strands.
Owner:BOSTON SCI SCIMED INC
High pressure cleaning and decontamination system
InactiveUS7140954B2Suitable protectionClean effectAbrasive feedersAbrasive machine appurtenancesTriple pointRoom temperature
Owner:KURION INC
Manufacture of Lattice Truss Structures from Monolithic Materials
ActiveUS20090286100A1Elimination of bonding processLow densityArmoured vehiclesLayered productsIn planeTriple point
Methods and systems to manufacture bonded corrugation truss-based structures. This allows the ability to change the dimensions of the individual structural features of the corrugations, i.e. thickness of the core, face sheet thickness, relative density of the core, and the alloys. The nodal design which provides ideal stress / strain distribution for in-plane and out-off plane loading. The node has a curved / smooth triple point intersection which in turn can provide best load transfer interface with high integrity / toughness. The bonded corrugation truss based structure can be continuous to any length only limited by the volume of the extrusion billet and the press capacity. An aspect of the bonded corrugation structures may include friction stir welding of the face sheets or any fusion welding of panels with edge members for strengthening allows fabrication of panels of any width and length. Bonding panels enables the fabrication of structures of any width.
Owner:UNIV OF VIRGINIA ALUMNI PATENTS FOUND
High-speed single crystal growth device
InactiveCN105442037AImprove cooling effectReduce heat dissipationPolycrystalline material growthBy pulling from meltHeat flowTriple point
The invention discloses a high-speed single crystal growth device which is characterized in that a guide cylinder is arranged above a crucible and the shape of the guide cylinder near a triple point is specially designed so as to control the direction of heat flow above a solidification interface; and a water jacket is arranged in the guide cylinder so as to reinforce the heat transfer of the crystal side. By designing the guide cylinder structure, the length of the water jacket extends to be near a solid-liquid interface. Compared with the conventional water jacket design, the heat dissipation capacity of the crystal side can be intensified greatly, and the crystal pulling speed is improved. The technical shortcoming that since the water jacket is too close to the solid-liquid interface, so that the concavity of the solid-liquid interface is increased is overcome, the flat solid-liquid interface shape can be achieved in the whole crystal pulling process, and the value of thermal stress in the crystal is controlled at a low level. Therefore, the high-speed single crystal growth device is favorable for quickly pulling high-quality single crystal.
Owner:XI AN JIAOTONG UNIV
Co2 cooling and heating apparatus and method having multiple refrigerating cycle circuits
InactiveUS20080245505A1High temperature heat sourceReduce decreaseCompression machines with non-reversible cycleEvaporators/condensersTriple pointEvaporation
A CO2 cooling and heating apparatus and method permit simultaneous production of high-temperature heat source and low-temperature heat source having a temperature difference therebetween. The apparatus / method uses CO2 (carbon dioxide) as a refrigerant, and has a first refrigerating cycle circuit where the refrigerant is compressed to a supercritical zone and then decompressed via an expansion device to a pressure / temperature level of the CO2 triple point or below to thereby attain evaporation. The apparatus can include multistage compressors, intermediate cooler disposed in a first refrigerant flow path between a condenser and the expansion device. A second refrigerating cycle circuit having a second refrigerant flow path, which can branch off from the first refrigerant flow path or provided in an independent closed circuit, can be provided to carry out absorption of evaporation latent heat with the first refrigerant flow path to thereby maintain the pressure / temperature level of the CO2 triple point (Ptr) or above. A third refrigerating cycle circuit having a third refrigerant flow path also can be provided to carry out heat exchange with the second refrigerant flow path.
Owner:MAYEKAWA MFG CO LTD +1
Manufacture of lattice truss structures from monolithic materials
Owner:UNIV OF VIRGINIA ALUMNI PATENTS FOUND
Multilayer Ceramic Capacitor and Production Method of the Same
ActiveUS20090059471A1Reduce materialReduced insulation performanceFixed capacitor dielectricStacked capacitorsTriple pointMetallurgy
The invention provides a multilayer ceramic capacitor comprising a capacitor body composed by alternately layering dielectric layers and inner electrode layers, and each of the above mentioned dielectric layers contains a plurality of crystal particles, and grain boundary phases comprising interfacial grain boundaries and triple point grain boundaries formed among a plurality of the crystal particles adjacent to one another, and Si—Ba—O compound being formed in 5% or more of the triple point grain boundaries in the entire triple point grain boundaries per unit surface area of the dielectric layer. Accordingly, the multilayer ceramic capacitor has high relative permittivity and is high the temperature property and highly accelerated life test property.
Owner:KYOCERA CORP
Semiconductor Gas Sensor And Method For Producing The Same
ActiveUS20130313569A1Improve response speedMaterial analysis by electric/magnetic meansSemiconductor/solid-state device manufacturingTriple pointEngineering
A technique capable of realizing a semiconductor gas sensor having a high rising response speed is provided. A gate insulating film (e.g., a SiO2 film) is formed on a Si layer, and a modified TiOx (a TiOx nanocrystal) film is formed on the gate insulating film. Further, on the modified TiOx film, a Pt film is formed. This Pt film is composed of a plurality of Pt crystal grains, and in a crystal grain boundary gap existing among the plurality of Pt crystal grains, Ti and oxygen (O) are present, and particularly, a TiOx nanocrystal is formed on a surface in the vicinity of a grain boundary triple point as the center.
Owner:HITACHI LTD
Laminated ceramic capacitor and process for producing the same
ActiveCN101147216AReduced insulation performanceImprove featuresFixed capacitor dielectricStacked capacitorsTriple pointMetallurgy
Owner:KYOCERA CORP
Method and apparatus for thermal control within a machining process
Method and apparatus for mixing within a rotary union of a computer numerical control machine a constant pressure gas with a relatively higher-pressure, lower-temperature dense fluid to produce a dense isobaric fluid deliverable through a rotating tool without gelling or solidifying therein. The constant pressure gas may include carbon dioxide, nitrogen, air or mixtures thereof. The dense fluid preferably includes liquid carbon dioxide at or above its triple point. The liquid carbon dioxide and isobaric gas are independently fed to the rotary union. When mixed, a pressurized flowing carbon dioxide machining fluid composition is formed exhibiting a temperature between about 20° F. and 70° F. at pressures between 75 psi and 1,000 psi.
Owner:COOL CLEAN TECH
R-t-b rare earth sintered magnet
ActiveCN102693812AReduce usagePermanent magnetsInorganic material magnetismRare-earth elementTriple point
The invention provides an R-T-B rare earth sintered magnet 100 including R 2 T 14 B-containing crystal grains as the main phase 10, and having an R L -T-M 1 based compound 12 at the grain boundary triple points, wherein R represents a rare earth element, T represents at least one element selected from among Fe, Co and Cu, B represents boron, R L represents a light rare earth element, and M 1 represents at least one element selected from among Al, Zn and Ga.
Owner:TDK CORPARATION
System for calibrating thermometers
InactiveUS6939035B2Easy and reliable testing and calibrationThermometer detailsCalibration apparatusBlackbody cavityTriple point
A device (10) for calibrating tympanic thermometers includes an enclosure (12) which may be heated or cooled depending upon the testing temperature. Within the enclosure (12) there is provided a sealed flask (14) which contains substance (16) which melts at the test temperature (this may be ethylene carbonate, melting point 36.3° C.). Located within the sealed flask (14) is a re-entrant well (18) which provides the blackbody for testing tympanic thermometers and a viewing aperture (20). The well (18) is treated to achieve a high surface emissivity. The device (10) allows the testing of thermometers by measuring the triple point or melting point of the substance (16). As the temperature of the substance (16) is accurately known, so is the temperature in the blackbody cavity (18) and thermometers can be calibrated thereby.
Owner:SEC OF STATE OF HER MAJESTYS BRITANNIC GOVERNMENT THE
Two-stage carbon dioxide low-temp. refrigerator
InactiveCN1358975ACompression machines with non-reversible cycleFluid circulation arrangementTriple pointMicroparticle
The two-stage CO2 low-temp. refrigerating equipment is characterized by that its low-temp. jet pump is connected with gas-liquid-solid three-phase separator, the gas-liquid-solid three-phase separator is respectively connected with heat regenerator, circulating pump and user's heat exchanger. The outlet state of the low-temp. jet pump is three-phase point of CO2, and the fluid of outlet is a gas-liquid-solid three-phase coexisting mixture, said low-temp. jet pump can be made into monounit together with gas-liquid-solid three-phase separator, so that it can make the solid microparticle diameter of CO2 formed after isenthalpic decompression of liquid separated from intermediate gas-liquid be very small, the circulating pump can be used for transferring solid-liquid two-phase mixture into user's heat exchanger, and can utilize the crilical hidden heat produced by converting CO2 solid-phase micropartide into liquid phase to release cold quantity.
Owner:XI AN JIAOTONG UNIV
Cryogenic medical device with high pressure resistance tip
InactiveUS20030060815A1High pressure resistance tipReduce pressureCatheterSurgical instruments for coolingTriple pointEvaporation
The present invention provides a medical device to cold treat desired regions. An injection tube with an open distal end is disposed inside of a catheter tube, defining a return lumen therein. A supply of cryogenic fluid, regulated by a controller mechanism coupled to the device, flows through the injection tube and into the distal tip portion of the catheter tube, whereupon the fluid is returned from the catheter through the return lumen. The expansion and evaporation of cryogenic fluid inside the device serves to cool the surrounding areas external to and proximate the distal end of the device. An additional restriction tube is provided in the length of the catheter tube to regulate the pressure of the flow of cryogen therethrough so as to create higher operating pressures in the distal end of the device and thereby enhance the cooling power and temperature stability of the device at a lower range of fluid flow rates without reaching the triple point of the cryogenic fluid.
Owner:MEDTRONIC CRYOCATH LP
Dielectric ceramic and producing method thereof, and multilayer ceramic capacitor
A dielectric ceramic formed by firing in a reducing atmosphere is provided. A multilayer ceramic capacitor formed by using the aforementioned dielectric ceramic has superior reliability even when the thicknesses of dielectric ceramic layers formed therefrom are reduced. The dielectric ceramic has crystal grains; and crystal boundaries and triple points, which are located between the crystal grains. The crystal grains contain perovskite compound grains composed of a perovskite compound represented by ABO3 (where A is Ba and Ca, or Ba, Ca and Sr; B is Ti, or Ti and a part thereof which is replaced with at least one of Zr and Hf) and crystal oxide grains composed of a crystal oxide containing at least Ba, Ti and Si, and about 80% or more of the number of the triple points each have a cross-sectional area of about 8 nm<2 >or less.
Owner:MURATA MFG CO LTD
Dielectric device
InactiveUS20070247782A1High yieldSimple structureTransistorPiezoelectric/electrostrictive microphonesTriple pointDielectric layer
Owner:NGK INSULATORS LTD
Hydrogen separation membrane and permselective membrane reactor
InactiveUS20100092353A1Inhibits the formation of defectsReduce penetrationSemi-permeable membranesMembranesTriple pointHydrogen
Owner:NGK INSULATORS LTD
Drying process and apparatus
InactiveUS8012313B2Improve throughputReduce harmPhysical/chemical process catalystsDistillation regulation/controlInjection portTriple point
This technology relates to a process and associated apparatus for use in spray freeze drying a fluid substance such as fruit juice, pharmaceuticals, nutraceuticals, tea and coffee. The method includes the steps of: holding a chamber at a temperature and pressure below the triple-point of the liquid substance; injecting and / or atomizing the liquid substance into the chamber through at least one injection port to generate a frozen liquid substance portion having a predetermined particle size and a first evaporated liquid substance portion; collecting the FLS portion as a layer on a conveying surface; and exposing the collected layer of FLS portion to a heating means thereby inducing sublimation and generation of a second evaporated liquid substance portion and a product, wherein the conveying surface conveys the collected FLS portion at a rate which achieves substantially a monolayer thickness of the FLS portion to accumulate on the conveying surface.
Owner:AGRESEARCH LTD
Triple point recurrence device with refrigerating machine serving as cooling source
ActiveCN103257001ALow running costShorten the timeThermometer testing/calibrationTemperature controlElectricity
The invention relates to a triple point recurrence device with a refrigerating machine serving as a cooling source. The triple point recurrence device with the refrigerating machine serving as the cooling source comprises a measuring room and the refrigerating machine. The measuring room is used for offering measuring spaces of a thermometer to be measured, a standard thermometer and a triple point bottle. The refrigerating machine offers cooling capacity for the triple point recurrence device. In the triple point recurrence device, heat balance among a cooling head, a temperature control copper block and a heat evening block, so that materials in the at least one triple point bottle are in a triple point state and calibration of temperature is conducted. According to the triple point recurrence device with the refrigerating machine serving as the cooling source, operation of the refrigerating machine only needs maintenance of water and electricity, so that operation cost is low; the refrigerating machine serves as the cooling source so that dependence on liquid helium and supply limitation of the liquid helium can be eliminated. The triple point recurrence device with the refrigerating machine serving as the cooling source is compact in structure, easy to move and capable of conducting low temperature calibration tests at any time anywhere, and has notable advantages.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
Piezoelectric ceramics and multi-layered piezoelectric ceramic components
ActiveUS20130162109A1Excellent piezoelectric propertiesImproved resistance characteristicsPiezoelectric/electrostriction/magnetostriction machinesPiezoelectric/electrostrictive device material selectionTriple pointAmorphous phase
A piezoelectric ceramic comprising as a main component an alkali-containing niobate-based perovskite structure expressed by a compositional formula (LixNayK1-x-y)a(Nb1-zTaz)O3 (provided: 0.04<x≦0.1, 0≦y≦1, 0≦z≦0.4, and 0.95≦a≦1.005); wherein a crystal phase or an amorphous phase containing Si and K is made present at a grain boundary or a grain boundary triple point of a plurality of crystal grains constituting the piezoelectric ceramic.
Owner:TAIYO YUDEN KK
Flat-plate-type water sublimation cold plate for aerospace radiation
ActiveCN104019685AEnsure the uniformity of water supplyConvenience to workIndirect heat exchangersTriple pointEngineering
Owner:BEIJING INST OF SPACECRAFT SYST ENG
Quasi-adiabatic sealing type argon three-phase-point recurrence device
The invention relates to a quasi-adiabatic sealing type argon three-phase-point recurrence device, comprising an outer barrel body and an upper cover, and a three-phase-point vessel connected with the upper cover; a vacuum chamber is arranged in the vacuum chamber, the three-phase-point vessel is arranged at the center of the vacuum chamber, a first heating membrane is attached on the outer side surface of the upper part of the three-phase-point vessel, a radiation barrier is arranged between the vacuum chamber and the three-phase-point vessel, a second heating membrane is attached on the outer side surface and the bottom surface of the radiation barrier, a temperature equilibrium block is arranged at the lower part of the three-phase-point vessel, a plurality of jack channels for a pole platinum resistance thermometer well are arranged in the temperature equilibrium block, and jack channels for a sleeve pipe platinum resistance thermometer well are arranged at the center of the temperature equilibrium block; by adopting the structure, the argon three-phase-point recurrence device improves the recurrence accuracy in the experiments and application, the plateau warming duration is long, the detection efficiency is improved and the transmission of temperature criterion is ensured.
Owner:NAT INST OF METROLOGY CHINA
Multi-layer ceramic capacitor and manufacturing method of multi-layer ceramic capacitor
ActiveUS20090073635A1Stable productionLow dielectric constantFixed capacitor dielectricStacked capacitorsCapacitanceTriple point
A small, large-capacitance multi-layer ceramic capacitor suppressed for remarkable lowering of permittivity, having a capacitor main body formed of ceramic dielectric layers comprising barium titanate as a main component and an Si oxide at a ratio of 0.5 to 10 mol being converted as SiO2 based on 100 mol of barium titanate and internal electrode layers, and a pair of external electrodes which are formed at the end faces of the capacitor main body and connected electrically with the internal electrode layers, in which the ceramic dielectric layer has crystal grains, crystal grain boundaries each present between the crystal grains and a grain boundary triple point, and B / A is 0.5 or less assuming the amount (mol) of an Si oxide being converted as SiO2 contained based on 100 mol of barium titanate as A and the volumic rate (vol %) of the Si oxide present at the crystal grain boundary and the grain boundary triple point of the ceramic dielectric layer as B, whereby remarkable lowering of a permittivity due to precipitation of an Si oxide to the crystal grain boundary and the grain boundary triple point is suppressed.
Owner:TAIYO YUDEN KK
Device for freezing ice sleeve in water triple point bottle
ActiveCN103148964AImprove stabilityEasy to operateThermometer testing/calibrationTemperature controlTriple point
The invention discloses a device for freezing an ice sleeve in a water triple point bottle. The device comprises a water tank, a suspension frame and a temperature control device, wherein the water tank is used for containing the water triple point bottle, the suspension frame is installed inside the water tank and used for installation of the water triple point bottle, and the temperature control device is connected with the water tank, is used for supplying constant-temperature circulating cooling water to the water tank, enables the ice sleeve to be formed inside the water triple point bottle, and achieves solid, liquid and gas three-phase equilibrium coexistence of water. According to the device, the freezing method is simple to operate, freezing processes are convenient, safe and reliable, operation personnel do not need to purchase liquid nitrogen or other low-temperature liquid, an ice machine, an ice crusher and a heat preservation barrel are not required to be manufactured, simultaneously, the operation personnel do not need to be trained professionally and have experienced operating skills, and the risk that the water triple point bottle can be damaged during the freezing processes does not need to be worried. The device can be suitable for triple point long-term reproduction preservation of temperature standard laboratory water, and is conducive to popularization of temperature fixed point quantity transmission.
Owner:深圳市艾依康仪器仪表科技有限公司 +2
Parallel kinematic device
InactiveCN101072661AMovement process is clearSimple structureProgramme-controlled manipulatorJointsTriple pointParallel kinematics
The invention relates to the kinematic connection of a fixed platform (2) to a mobile platform (3) comprising up to six degrees of freedom in closed kinematic chains, (parallel kinematics), the connecting elements being rods, (actuators) of adjustable length, optionally consisting partially of rods of a constant length, (passive rods) and optionally cables. The invention is characterised in that three connecting elements of this type engage with a common point of one of the platforms (2, 3), forming a triple point (P3). In embodiments of the invention, said triple point can be configured as a pseudo triple point to produce a simple mechanical configuration, without losing the advantages of the invention. The inventive kinematics can be used for lifting tables, tackle for overhead conveyors, lifting robots, articulated arm-type robots, excavators, mills, cutting devices etc..
Owner:弗伦茨·埃伦莱特纳
Novel carbon dioxide trapping device performing liquefaction and then sublimation
InactiveCN103274406AHigh purityAvoid it happening againCarbon compoundsAir quality improvementSystems designTrapping
The invention discloses a novel carbon dioxide trapping device performing liquefaction and then sublimation. According to the device, research on physical properties of carbon dioxide and related mixtures is combined, and gas-liquid separation is performed firstly through a low temperature mode to obtain a part of liquid carbon dioxide; mixed gas after the liquefaction separating is cooled continuously and passes through two sublimation separating towers, and then carbon dioxide is separated; and dry ice obtained from sublimation separation is collected into a condensation pool, and the pressure is controlled above triple point pressure of carbon dioxide, so that the obtained dry ice can be melted directly into liquid carbon dioxide. The overall system design facilitates sufficient cold quantity recovery. The device improves the carbon dioxide trapping purity effectively, increases the carbon dioxide trapping efficiency, improves the cold quantity recovery rate of the system, and is energy-saving and low in consumption.
Owner:SOUTHEAST UNIV
High pressure cleaning and decontamination system
InactiveUS20060089090A1Suitable protectionClean effectAbrasive feedersAbrasive machine appurtenancesTriple pointRoom temperature
Abrasive cleaning and decontamination methods and systems are disclosed. The methods and systems use a high pressure liquefied gas, such as carbon dioxide, which produces insignificant quantities of secondary waste. These principles of the invention exploit the properties of the relatively high triple point of CO2 in order to first pressurize it to 35,000 to 60,000 PSI from a pressurized liquid. In the pressurized state, such a fluid can be at or above room temperature, allowing for transport over long distances in a flexible high pressure hose. At a point of use, a heat exchanger may subsequently chill the liquid, so that after expansion through a small high pressure orifice, a significant fraction of the liquid is converted to solid phase crystals exiting at high velocity to effectively clean and decontaminate. For more aggressive cleaning, abrasive particles and / or small diameter solid CO2 pellets can be entrained into the high pressure CO2 slipstream.
Owner:KURION INC
Method and design for electrical stress mitigation in high voltage insulators in X-ray tubes
In accordance with one embodiment, the present technique provides an X-ray tube. The X-ray tube includes an anode assembly configured to emit X-ray beams and a cathode assembly configured to emit electrons towards the anode assembly. The cathode assembly includes an insulator and a cathode post. The insulator includes a side surface, wherein the side surface includes a recessed portion. The cathode post includes a hollow interior region having an interior surface, wherein the interior surface is configured to engage with the side surface of the insulator. The cathode post may also include a foot portion that extends away from the interior surface at the end of the cathode post. The cathode post adjacent to the recessed portion of the insulator is configured to shield a triple point to reduce electrical stresses on the triple point.
Owner:GENERAL ELECTRIC CO
Liquefied natural gas (LNG) cold energy-driving seawater desalination device and method with double functions of vaporization and freezing
ActiveCN102531261AImprove qualityRealize cascade utilizationGeneral water supply conservationSeawater treatmentWater desalinationHigh energy
The invention discloses a liquefied natural gas (LNG) cold energy-driving seawater desalination device and method with double functions of vaporization and freezing. The operating principle of the device is based on the characteristic that the phase equilibrium pressure of water vapor decreases along with the decrease of the temperature, the cold energy of LNG is utilized to realize low temperature and vacuum, the water vapor on the surface of the raw material seawater is pumped to promote the vaporization of seawater and the endothermal effect of the vaporization process is utilized to ensure that the raw material seawater is frozen, i.e., fresh water is separated from seawater through the two phase transition processes of vaporization and freezing. The device mainly comprises a water pump, a filter, a degassing tower, an air-precooled heat exchanger, a vaporization-crystallization device, a crystallizer, a scrubbing separator, a melting device, a vacuum pump and the like. The deviceis mainly characterized in that LNG cold energy driving is adopted, gas-liquid-solid separation is performed at the triple point of seawater, and high-quality fresh water and sea icy freshwater are obtained; and the device has the advantages of cold energy cascaded utilization, higher energy efficiency, higher fresh water yield and the like. In addition, an LNG receiving station is usually built by the sea and has good geopolitical combinability with a seawater desalination project.
Owner:ZHEJIANG UNIV
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