416results about How to "Avoid heat loss" patented technology

The invention discloses a hydrogen production system by utilizing thermochemical reaction thermally driven by solar energy under medium-lower temperature, which comprises a material supplying device for storing materials required for producing hydrogen, a material mixing device for mixing raw materials and non-reactants, a material measuring device for controlling the volume of raw materials sent into a preheater per unit time, the preheater for preheating raw materials, a solar energy absorption reactor for driving raw material to carry out reforming reaction by utilizing absorbed solar energy heat, a solar energy collector for aggregating solar energy with low energy flow density into medium-lower temperature heat energy with high energy flow density in a form of line focus so as to provide heat for material reforming reaction, a condenser for cooling reaction products, a gas-liquid separator for separating gas and liquid of a mixture, and a PSA (pressure swing adsorption)device for separating the obtained pure hydrogen. The invention also discloses a method for producing hydrogen by utilizing thermochemical reaction thermally driven by solar energy under medium-lower temperature. The system and the method of the invention reduce the cost of producing hydrogen by utilizing solar energy and are beneficial to mass popularization and application.

The invention discloses a kind of fixed bed reactor for catalytic reforming and dehydrogenation, the reactor uses a round pressure container which has a catalytic bed. The inlet and the outlet is at one side of the container, the catalytic bed is made up of outer multi-hole wall and round inner multi-hole wall, catalyst is filled in them, there has a cover sealing structure on the catalyst, the round inner multi-hole wall can uses variable hole-rate or zone structure. The reacting gas in the device flows centrifugally, the gas in the centre inner barrel and multi-hole outer barrel flow reversely.

The invention discloses a lightweight energy-saving paint and its preparation method. The paint provided by the invention comprises the following components of: by weight, 45-55 parts of corundum hollow spheres, 20-30 parts of a lightweight filling material, 5-10 parts of fiber, 15-20 parts of a binder and 0-5 parts of an additive. The lightweight energy-saving paint prepared in the invention has characteristics of good fluidity, high strength, low thermal conductivity, strong adhesive force, high refractoriness, good chemical stability, strong corrosion resistance and the like, can be used for the surface coating of high temperature pipelines, thermal equipment and hearth inside and outside parts to effectively inhibit heat radiation and calorific loss, and can be used for spraying and coating the internal and external surfaces of various concrete structures and steel structure buildings so as to save energy, insulate sound and prevent fire.

A filter element comprising a pleated metal fiber fleece is pleated according to pleating lines, providing an edge with pleat openings to be closed to make gas flowing through the metal fiber fleece. The filter element comprising at least two flanks, each of these flanks comprises a thermally and electrically insulating fabric and a stiff material layer. The thermally and electrically insulating fabric is present at one side of the stiff material layer, providing a thermally and electrically insulated side to the flank. The metal fiber fleece is mounted between the thermally and electrically insulated sides of both flanks, which exercise a clamping force on the edges of the metal fiber fleece in a direction essentially parallel to the pleating lines, while the flanks closing said pleat openings.

The invention relates to a composite bed reactor and a method for combined production of calcium carbide, gas and tar, and belongs to the field of calcium carbide production. The reactor comprises a hopper, a brake bunker, a moving bed preheating chamber, a tar collector, a gas outlet, a distributing device, an oxygen heat reaction chamber, oxygen spraying burners, a product molten pool and a product outlet, and the hopper is connected with the moving bed preheating chamber by the brake bunker, and the top side surface of the moving bed preheating chamber is provided with the tar collector, and the tar collector is provided with a gas outlet, and the moving bed preheating chamber bottom is provided with a distributing device, and the moving bed preheating chamber is communicated with an oxygen heat reaction chamber by a distributing device, and the oxygen heat reaction chamber bottom is connected with a product molten pool, and the upper portion of the connection between the oxygen heat reaction chamber and the product molten pool is provided with the oxygen spraying burner, and the middle bottom of the product molten pool is provided with a product outlet. The reactor of the invention has the advantages of simple structure and high efficiency, and large scale production is easy to realize, and the raw material is pelleted by powder form carbonaceous raw material and powder form calcium containing raw material, and the contact surface between raw materials is large, the reaction rate is fast, and reactor is convenient for reusing calcium carbide slags.

The invention relates to a mud drying system and a use method thereof. The mud drying system comprises a transcritical heat pump auxiliary heat supplying loop, a heat pump auxiliary heat supplying loop, an air heating and waste heat recovering loop and a hot water circulation loop; the transcritical heat pump auxiliary heat supplying loop comprises an evaporator, an internal heat exchanger, a compressor, a gas cooler and a throttle valve; the heat pump auxiliary heat supplying loop comprises an evaporator, a wastewater and waste heat recovering evaporator, an internal heat exchanger, a compressor, a condenser, a throttle valve, two stop valves and a wastewater tank; the air heating and waste heat recovering loop comprises a hothouse, an air compressor, a gas discharging and carrying port, a first evaporator, the other evaporator and a condenser; and the hot water circulation loop comprises a pump, a hothouse and the condenser in the heat pump auxiliary heat supplying loop. The invention adopts the hothouses to obtain solar energy to heat mud and utilizes the transcritical heat pump auxiliary heat supplying loop and the heat pump auxiliary heat supplying loop to recover the sensible heat and the latent heat in humid air to heat mud, thereby lowering the energy consumption for drying the mud. The invention can be widely applied to various mud processing fields.

The invention discloses a desulfurization and denitrification afterheat power generation systematization device of glass melter flue gas. The desulfurization and denitrification afterheat power generation systematization device comprises the process that: a. a fourth flashboard (14) is arranged in an afterheat boiler (15), a high-temperature section (6) and a low-temperature section (5) are formed, a bypass flue (9) of a chimney (7) is connected with the high-temperature section (6), and an exhaust pipeline of the low-temperature section (5) is connected with the chimney (7); b. the high-temperature section (6) is provided with a bypass pipeline and connected with a dry desulfurization reactor (3), a high-temperature electric dust remover (2) and a denitrification reactor (1), and c. the denitrification reactor is connected with the low-temperature section (5) through the pipeline. The desulfurization and denitrification afterheat power generation systematization device has the beneficial effects that: high-temperature flue gas firstly passes through the high-temperature section of the afterheat boiler, and the temperature of the flue gas is reduced, so that electrode material of an ESP (electrostatic precipitator) does not need to adapt to over-high temperature, and the requirements of an SCR (selective catalytic reductor) denitrification system on the temperature can be met. The flue gas enters the low-temperature section of the afterheat boiler again after being desulfurized and dedusted, so that the afterheat of the flue gas is fully and effectively recovered.

The plasma spraying and pyrolyzing process of preparing nanometer hollow microsphere powder of nanometer crystalline oxide includes preparing precursor solution, atomizing, plasma spraying and pyrolyzing in plasma flame to form solid molten drop, and cooling in liquid to solidify form the hollow spherical nanometer crystal structure. The process is simple and suitable for industrial production.

The invention relates to a current-assisted titanium alloy bellows hot-forming die and method, relates to a bellows hot-forming tool and method and solves the technical problem that integral heating in the plastic hot-forming process causes heat loss. The tool comprises an argon cylinder, a gas pipe, an axial loading shaft, an axial loading device fixing plate, a gas cylinder, an axial loading sleeve, a sleeve support plate, a bench, a positioning plate, positioning nuts, positioning studs, a sealing device, an electrifying device, a metal die frame, and a ceramic die. The method includes: keeping the temperature of 600-900 DEG C and inner air pressure 0.1-0.5MPa of a pipe billet for 100-250s, assembling the die, keeping the inner air pressure 2.0-3.0MPa of the pipe billet for 200-400s, powering off, relieving air pressure, and cooling to obtain a titanium alloy bellows. The die and method belonging to the field of bellows production have the advantages that heat loss consumed for the die during integral heating in the traditional plastic hot-forming process is avoided.

The invention discloses a comprehensive recovery method and a system of condensation water and dead steam. The method comprises the following steps: (1) transmitting the condensation water discharged by steam-consuming equipment to a flash drum to be performed with flash evaporation to obtain flash steam, and transmitting the flash steam and the dead steam discharged by the steam-consuming equipment to be below the liquid level of the condensation water in a water collecting tank; (2) transmitting the residual condensation water after flash evaporation to water processing equipment to be treated, and discharging to the water collecting tank to feed water for a boiler; (3) transmitting the condensation water in the water collecting tank to the boiler; and (4) when steam pressure in the water collecting tank exceeds the warning value, transmitting the steam in the water collecting tank to the steam-consuming equipment through a main boiler steam pipe by an injection pump. The temperature of the condensation water is lowered after flash evaporation, and then the condensation water is processed by the water processing equipment to prevent high temperature from damaging the water processing equipment; and meanwhile, the flash steam is directly recovered to the water collecting tank so as to take away most parts of heat of the condensation water, thus avoiding heat loss to the utmost degree, and realizing energy and water saving.

The invention discloses an HY type dry distillation furnace which is characterized by comprising a plurality of dry distillation subunits, wherein each dry distillation subunit comprises a charging device, an oil gas discharge device, a dry distillation device, a heating device and a coke discharge device; materials are subjected to dry distillation by using a combined radiation heat exchange and convection heat exchange mode in the furnace; gas generated in a dry distillation process is used as a dry distillation heat source, and the dry distillation heat can be self-balanced; the materials are directly heated by virtue of radiation of a furnace wall of a combustion chamber, and a heat carrier does not need to be subjected to secondary heating and long-distance conveying; a dry distillation gas outputting device is arranged in the furnace, so that the gas in the furnace flows smoothly; coke is discharged by a dry method. The dry distillation furnace is high in heat utilization efficiency, low in outlet gas quantity, low in water consumption, high in oil yield and large in daily treatment capacity capable of being more than 6,000 tons, and is suitable for low and medium-temperature dry distillation of the materials such as oil sand, oil shale, coal and the like, and suitable for oil refining and dry distillation of large particle materials and small particle materials of less than 15mm.

The invention discloses a device for testing the low-temperature heat conduction rate of a foam heat insulation material in a loaded state, which is simple in structure, low in cost, convenient in operation and accurate in test result, and is provided with a sealed vacuum cavity communicated with a vacuumizing pipe, wherein a sealing cover on the vacuum cavity is fixed with a corrugated pipe; a heat insulating pressure bar is arranged in the corrugated pipe; the upper end of the heat insulating pressure bar is connected with the corrugated pipe and the lower end of the heat insulating pressure bar passes through the sealing cover to enter the vacuum cavity to be connected with a pressing plate; a cold cavity is arranged below the pressing plate; a cold plate is arranged on the top of the cold cavity; the lower end of the cold cavity is communicated with a low-temperature liquid input pipe and the upper end of the cold cavity is communicated with an air exhaust pipe; the end of the airexhaust pipe comes out of the vacuum cavity; and a wire hole is formed on the vacuum cavity.

The invention provides a method for exothermic catalytic reaction under increased pressure and a reactor thereof. The method and the reactor are characterized in that: a round pressure vessel (7) with a catalytic bed (4) is used; a gas inlet (1) is positioned on an end cover of the vessel (7) and connected with an internal distribution drum (5) to form a shunt passage (2) for reacting gases; a gas outlet (11) is communicated with a space that is formed between the wall of the vessel (7) and an external distribution drum (6), to form a concentration passage (3) for the reacting gases, the catalytic bed (4) is defined between the external distribution drum (6) and the internal distribution drum (5) and is filled with catalysts; the reacting gases flow axially in a centrifugal manner from the internal distribution drum (5) to the external distribution drum (6). The method and the reactor have the advantages of axial and uniform distribution of the reaction gases, optimum distribution of bed temperature, high utilization rate of catalysts, and low pressure drop of fluids passing through the reactor. The invention is suitable for catalytic reactions in methanol, ammonia and dimethyl ether synthesis, as well as other exothermic gas-solid catalytic reactions under increased pressure.

The invention relates to a low-temperature heating device for a lithium-ion battery; the low-temperature heating device comprises the lithium-ion battery, two power devices of a motor controller and two winding inductors of a motor; the low-temperature heating device also comprises a heating control circuit arranged between the power devices of the motor controller and a negative electrode of thelithium-ion battery. The lithium-ion battery, the two power devices of the motor controller, the two winding inductors of the motor and the heating control circuit are successively connected to form acircuit. The heating control circuit comprises a capacitive element, an additional power device and a switching device. The capacitive element and the additional power device are connected in seriesand then connected in parallel with the switching device. An LC oscillating circuit is formed by the capacitive element and the winding inductors through opening and closing of the switching device and the additional power device respectively, and the high-frequency alternating current is generated. According to Joule's law, the heat is generated in the battery, and then the interior of the battery is heated. The device can be used for quickly and efficiently heating, and has uniform speed and good effect.

The present invention relates to a thermal conductive cylinder installed with U-type core piping and loop piping for being installed within natural thermal storage body or artifical thermal storage body; wherein the piping segments of fluid inlet terminal and / or outlet terminal of the U-type core piping and loop piping are directly made of thermal insulating material, or thermal insulating structure is installed between the inlet terminal and the outlet terminal; so as to prevent thermal energy loss between adjacent piping segments on the same side when thermal conductive fluid with temperature difference passing through.

The invention discloses a method for removing transverse crack defects of a continuous casting billet corner of boron steel. The method comprises the steps of: adopting a whole argon blowing mode for smelting of a converter; in refining, finally, adjusting boron alloying after finishing adjustment of other alloy ingredients and temperature; controlling N content of molten steel in a casting process to be less than or equal to 50ppm and B content to be less than or equal to 80ppm; and controlling the strength of secondarily cooling of the continuous casting billet to be a water ratio being less than or equal to 0.90 / kg, wherein the ratio of cooling water quantity of the secondary cooling at continuous casting stages in the total water ratio is 15-20% in a foot roller area, 15-22% in a vertical section area, 15-40% in an arc section area and 3-5% in a straightening area; and the narrow-surface temperature of a continuous casting billet in a bent area is more than 1000 DEG C, and the narrow-surface temperature of the continuous casting billet in the straightening area is more than 870 DEG C. According to the method for removing the transverse crack defects of the continuous casting billet corner of the boron steel, the nitrogen content in the molten steel is effectively reduced; the transverse cracks of the corner are removed; and the corner cut loss and the heat loss are avoided.

The invention discloses an integration flat plate solar heat pump hot water device which combines a flat plate type solar water heater and a heat pump hot water system into one body, wherein the outlet end of a condensing agent tube of an integration flat plate type solar heat collector (1) is connected with the inlet end of a compressor (2) through a first check valve (10), the outlet end of the compressor is connected with the inlet end of a condensing agent tube of a bushing condensator (3), the outlet end of the condensing agent tube of the bushing condensator is connected with the inlet end of a three-way valve (5) through an electromagnetic valve (f) and an electric expansion valve (4); the outlet end of the three-way valve is divided into two ways, wherein one way is connected with the inlet end of the condensing agent tube of the integration flat plate type solar heat collector, the other way is connected with the inlet end of an outdoor air source evaporator (6), and the outlet end of the outdoor air source evaporator is connected between the first check valve (10) and the inlet end of the compressor through a second check valve (110); a water loop of the integration flat plate type solar heat collector (1) is communicated with a first water tank (I), and a water loop of the bushing condensator is communicated with a second water tank (II).

The invention discloses a thermoacoustically driven magnetic fluid power generation system which adopts room temperature ionic liquid. The invention includes a first loop of traveling wave thermoacoustic core, a resonance tube, room temperature ionic liquid, a power generation device and a second loop of traveling wave thermoacoustic core which are connected sequentially ; the invention also includes a frequency stabilizer between the two traveling wave thermoacoustic cores. The traveling wave thermoacoustic core loop includes a feedback tube, an acoustic inductance tube, an acoustic capacitance tube, a first water cooler, a heat regenerator, a heater, a thermal buffer tube and a second water cooler. The power generation device is composed of a rectangle stainless steel outer sleeve, a insulation interlayer, a permanent magnet, electrodes and connecting terminals; and also includes the room temperature ionic liquid which surges periodically. The frequency stabilizer is connected with the traveling wave thermoacoustic cores by two stop valves through two gas storages which has two regulating valves. The thermoacoustically driven magnetic fluid power generation system of the invention brings room temperature ionic liquid into the traditional thermoacoustic engine as the liquid piston, and forms a coupling surge by two phase working medium of gas and liquid; the surge drives the ionic liquid to move back and forth to cut the magnetic line perpendicular to the moving direction, thereby realizing the generation of electricity power.

A heater device applied in a desiccant rotor dehumidifier for supplying regeneration hot air to the desiccant rotor comprises a metal case having an air inlet and an air outlet; heating elements supported by insulative material and mounted adjacent to the desiccant rotor; and an insulative plate installed in parallel to the heating elements and parting the heating elements with the air inlet. The insulative plate is formed with a plurality of via holes suitably distributed for the intake air coming from the air inlet passing through, being heated by the heating elements and evenly passing the desiccant rotor through the air outlet. The insulative plate also splits and bypasses a part of the intake air to cool down the desiccant rotor that has been heated and regenerated.

The invention discloses a supercritical hydrothermal combustion type steam generator for thermal recovery of heavy oil in an ultra-deep well. The supercritical hydrothermal combustion type steam generator comprises three parts, namely a generator head, a generator upper part and a generator lower part, an electric heating rod for ensuring the occurrence of the supercritical hydrothermal combustionreaction is arranged on the generator head, the generator upper part comprises a primary combustion chamber and a secondary combustion chamber to ensure sufficient supercritical hydrothermal combustion reaction of fuel and an oxidant, a spray head and reducing ports of the generator lower part ensure that the parameters of reaction products meet the requirements of oil field thick oil recovery, and cooling water in the generator is used for ensuring that the generator is not overtemperature so as to protect safe operation of the generator. According to the supercritical hydrothermal combustion type steam generator, the heavy oil recovery cost is lowered, the heat utilization efficiency is improved, pollutants are prevented from being discharged, and efficient recovery of deep and offshoreoil reservoirs is realized.

The invention relates to a preparation method of an annular-structure thermoelectric device. The preparation method comprises the following steps of placing a first metal connecting layer at a groove vertically arranged on an inner wall of a hollow mould; inserting a central rod in the mould; sequentially paving a first thermoelectric material, an isolating layer material and a second thermoelectric material in an annular hollow part between the central rod and a shell of the mould; sintering the mould; removing the central rod after sintering, and removing the isolating layer material between the first thermoelectric material and the second thermoelectric material so as to obtain annular thermoelectricity unicouples; connecting inner walls of the annular thermoelectric unicouples through second metal connecting layers so as to obtain the annular-structure thermoelectric device. Due to the adoption of the method, the annular-structure thermoelectric device can be high-efficiently prepared.

The invention discloses a combined home-use air conditioning heat pump hot water machine system, comprising a solar energy heat exchanging unit, a bathing water unit, a floor heat collecting unit and a ventilation air exchanging unit, wherein, the bathing water unit, the floor heat collecting unit and the ventilation air exchanging unit are respectively connected with the solar energy heat exchanging unit. According to the invention, the solar energy and the air can be combined organically; the heat in the solar energy can be fully utilized to manufacture the life-used hot water and the floorheat collecting hot water; refrigerating and heating can be simultaneously carried out to achieve the purpose of saving energy; the room can be dehumidified and ventilated with fresh air and exchanged with air, thus ensuring the comfort of the room; about 80% of energy of the return air is recovered by utilizing a full-heat recovery heat exchanger; the precooling dehumidification or the preheating humidification are carried out on the fresh air, thus the energy can be fully recovered, and the heat loss is prevented; a fresh air inlet, a return air inlet, an air supply outlet, an exhaust outlet, an economic valve and a bypass valve are designed to realize the omnidirectional adjustment on the air in the room; and the bathing water is completely separated with a powered device, thus fully ensuring the safety of users.

The invention relates to a heat-pipe type panel solar air collector and a heating method thereof. The collector comprises a solar panel heat collection and heat transmission section and an air ventilation heat exchange section. The solar panel heat collection and heat transmission section comprises tempered glass, an efficient heat absorption coating, a heat insulation air layer and a panel heat pipe evaporation section. The back of the efficient heat absorption coating and the obverse side of the panel heat pipe evaporation section are combined organically. The tempered glass covers the outer surface of the panel heat pipe evaporation section organically combined with the efficient heat absorption coating. The heat insulation air layer is arranged between the efficient heat absorption coating and the tempered glass, and the distance from the front of the efficient heat absorption coating to the inner surface of the tempered glass ranges from 20 mm to 50 mm. The air ventilation heat exchange section comprises an air duct, a fan and a panel heat pipe condensation section. The panel heat pipe condensation section is arranged in the air duct, and the fan is arranged on one side of the air duct. The collector has the advantages of being high in heat exchange efficiency, high in reliability, simple in structure, convenient to mount, free of maintenance and long in service life.

The invention relates to a manufacturing method of small-sized square flat steel, in particular to a method for rolling low-carbon and high-sulfur free-cutting steel into the small-sized square flat steel by a cold rolling-drawing manner. The method comprises the steps of material selection, head rolling, pickling / shot blasting, cold rolling, recrystallization annealing, pickling / shot blasting saponification, cold drawing and straightening. The method can reduce the blank rejection rate of rolling, improve the precision and surface quality of a finish product, and reduce loss of raw materials during the rolling.

The present invention relates to a U-type piping capable of thermal energy transmission with each other in a radiate arrangement, wherein the piping segments of the U-type fluid piping inlet end and / or outlet end of the U-type piping capable of thermal energy transmission with each other in the radiate arrangement are directly made of thermal insulating materials, or a thermal insulating structure is installed between the inlet end and the outlet end, and a thermal conductive body made of thermal conductive material is further installed thereof, so as to prevent thermal energy loss because of thermal conduction by temperature difference between adjacent piping segments with temperature difference of the inlet end and the outlet end installed on the same side when fluid with temperature difference passing through.

A gas sensor apparatus and method of forming the same generally includes a gas sensor element comprising a heater and a plurality of electrodes. A ceramic substrate can be provided for supporting the electrodes on one side of the ceramic substrate and the heater on the opposite side of the ceramic substrate. The gas sensor element is preferably embedded in the ceramic substrate. The ceramic substrate also possesses a substantially circular shape in order to prevent a breakage of the gas sensor element, avoid thermal loss, and permit the gas sensor apparatus to withstand mechanical shock and high vibrations while occupying a minimal package space.

The invention discloses an integrated solar energy overall production device for seawater desalting, comprising a heat collecting and diaphragm transferring distiller, a heat exchanger, a blower, a cyclone separator, a temperature sensor and so forth, the distiller consists of a connecting box, a vacuum tube plugged on the connecting box, a seawater input tube inside the vacuum tube and a saturate vapor output tube, the internal side wall of the vacuum is provided with a wet diaphragm; with using the utility model, the heat collecting temperature of solar energy can be controlled within a low heat range from 40 to 60 DEG C, the light-heat exchanging rate can be increased; the side wall at the upper end of the seawater input tube is provided with a water distribution hole, the seawater is sprayed to the wet diaphragm through the water distribution hole, so the processes of heat collecting, diaphragm transferring distillation and micro negative pressure distillation can be conducted simultaneously, a diaphragm distilling area of seawater can be increased, the invention solves the problems where the utilization rate of solar energy light-heat is lower, the production efficiency is low, the clear water is easy to be polluted., etc, the efficiency can be largely increased, the cost is decreased.

The invention relates to a CPE / CPVC rubber-plastic thermal-insulation material and a preparation method thereof and belongs to the field of polymer synthesis and processing application. The CPE / CPVC rubber-plastic thermal-insulation material is prepared from 100 parts by mass of CPE / CPVC resin, 1.5-10 parts by mass of a stabilizing agent, 0.3-3 parts by mass of a composite lubricant, 10-50 parts by mass of a plasticizer, 0.3-5 parts by mass of a foaming agent, 0.4-1.0 part by mass of a foaming aid, 1-4 parts by mass of a foaming adjustment agent, 0-15 parts by mass of a fire retardant and 0-20 parts by mass of a filling material. The CPE / CPVC rubber-plastic thermal-insulation material has excellent performances such as softness, flexing damage resistance, cold resistance, heat resistance, flame retardation, water resistance, low heat-conduction coefficient, cushioning effect and sound absorption and has ideal use effects in the aspect of thermal insulation for heat loss prevention. The preparation method of the CPE / CPVC rubber-plastic thermal-insulation material is simple and continuous, has high production efficiency, is suitable for streamline batch production and can be widely used in industries of building, light textile, medicine, chemical engineering, metallurgy and ship-building.

The invention relates to a sea water desalting plant implanted into a wind power tower, and belongs to the field of sea water desalination. The sea water desalting plant comprises an evaporator. A porous barrier partitions the evaporator into an upper steam cavity and a lower sea water cavity. The porous barrier is a hydrophilic thermal insulation porous medium, the inner pore diameter is that of a micrometer hole, and the upper side of the porous barrier is coated with a heat absorption coating. The steam cavity is sequentially connected with a condenser, a condensation tank and a fresh water tank through a pipe. One end of the sea water cavity is connected with a sea water pipe to be used for water inputting, and the other end of the sea water cavity is connected with a salt pipe to be used for water outputting. Heat exchange is conducted on the sea water pipe and the salt water pipe through a heat exchanger, and an outlet of the salt water pipe is connected with a piston type water pump to pump out salt water. The center of the porous barrier and the center of the condensation tank are 10 meters away from the sea level in height. By means of the sea water desalting plant, stable and long-time sea water desalting can be achieved without inputting external power and electricity, the thermal utilization efficiency is high, and an effective path is provided for emergency water for ocean working, help seeking and the like or large-scale water contributing.

The invention relates to an oil and gas steam injection exploitation device for an oilfield, and particularly relates to a sand control and steam injection integrated device. The invention further relates to a method which uses the sand control and steam injection integrated device to realize sand control and steam injection. The sand control and steam injection integrated device provided by the invention comprises a first heat preservation tubing, a heat preservation downhole compensator, a second heat preservation tubing, a steam injection check valve, a sealing device, a cannula sealing device and at least one sand control and steam injection unit, wherein the first heat preservation tubing, the heat preservation downhole compensator, the second heat preservation tubing, the steam injection check valve, the sealing device, the cannula sealing device and at least one sand control and steam injection unit are connected in turn. Through integrated design of a sand control device and a steam injection device, a set of tubular columns can realize sand control and steam injection at the same time. A process program is simplified. Complex situations are avoided. The effects of sand control and steam injection are effectively improved.