182 results about "Evaporation condensation" patented technology

A flat heat pipe has a vacuum chamber, an evaporator connected to a heating element, and a condenser connected to a cooling device. The vacuum chamber is provided in an interior with a wick structure and a working fluid by which an evaporation-condensation cyclic process is effected. The vacuum chamber is further provided in the interior with a plurality of heat conduction pillars, which are confined to the area of the evaporator and are connected with an upper wall and a lower wall of the interior of the chamber. The heat conduction pillars serve to enhance the heat conduction to the condenser from the evaporator.

The present invention provides a method for comprehensively treating high salt content organic industrial wastewater, and relates to the field of the organic material preparing technique. The method of the invention mainly comprises the following steps: executing acid-alkali adjustment to the organic wastewater until pH=7-9, preheating to 30-60 DEG C; introducing the wastewater into a triple effect evaporator for executing triple effect evaporation, executing salting out to the evaporated wastewater which is condensed to a certain degree so that the solid and liquid are separated; separating the concentrated liquid for continuing the condensation; when the separated liquid satisfies a certain requirement, atomizing into an incinerator for incinerating and discharging according to the standard, and introducing the triple effect evaporation condensation water into a biochemical treating system. The method of the invention can totally dispose and remove the organic matter in the high salt content organic industrial wastewater so that the high salt content organic industrial wastewater can be charged according to the standard. The method of the invention has the advantages of unique method, simple technical process, easy operation, low operation cost, large treating capacity, low regeneration energy consumption, no easy forming of secondary pollution after abandon, better economic and social benefit, and wide application range. The method of the invention can be widely applied for the treating of the high salt content organic wastewaters of garbage penetrating fluid, dye intermediate wastewater, etc.

The invention discloses a constant-pressure multiple-effect evaporation condensation sea water desalination device with an air medium, which mainly comprises a low-and-medium temperature heat source (13), a first-stage heating evaporator (14), an evaporation condenser (4) and a last-stage condenser (8). The first-stage heating evaporator (14), the evaporation condenser (4) and the last-stage condenser (8) are installed in sequence closely, and the low-and-medium heat source (13) and the first-stage heating evaporator (14) are connected together. The first-stage heating evaporator (14), the evaporation condenser (4) and the last-stage condenser are all formed by combining a plurality of heat exchange plates which are arranged from left to right in sequence, and a gap is reserved between every two adjacent heat exchanging plates to form a flow channel for heat exchange fluid. By adopting the plate-type heat exchange principle, the sea water desalination device realizes multiple-effect air humidification and dehumidification evaporation and condensation for sea water desalination under constant pressure. Heat and moisture transfer is performed between sprayed sea water and overflowing air, and the condensation latent heat of fore effect heat and moisture air can be absorbed at the same time, and therefore, energy recovery is realized and the fore effect heat and moisture air can be condensed to obtain fresh water.

The invention discloses an evaporation-condensation method for preparing superfine metal powder, which comprises the steps that raw materials are fed into a crucible of an evaporator through an airtight metal feeding machine, and the feed speed is 0-10kilogram/hour; metal is evaporated in the evaporator; air containing metal steam is injected into a condensation pipe with the speed of 500-25,000lpm, steam in the condensation pipe is quickly cooled by the condensation pipe through water cooling to form metal powder, the metal powder enters a collector along with the air, and the powder is separated from the air through a set of multi-pore metal filter core device to form pressed powder; and inert gas is reversely blown in to enable the pressed powder to fall and be collected. The superfine powder prepared with the method is good in particle quality, the superfine powder is spherical particles with the particle diameter as 50-2,000 nanometers, and the superfine powder is good in particle size distribution. The method has the advantages of being capable of meeting industrialized scale productivity, low in production cost, small in invest, simple in equipment, easy to control particle size, capable of preparing various types of metal superfine powder, wide in using scope and the like.

The invention relates to a mixing humidity-removal air conditioner. It belongs to refrigeration and air conditioner technology field. The air conditioner includes desiccant humidity-removal subsystem, indirect evaporation refrigeration device and steam condensation refrigeration subsystem. Reel of desiccant humidity-removal subsystem is separated humidity-removal zone and regeneration zone by insulation heat preservation board. Exit of humidity-removal connects with fan through air conduit. Entry of regeneration connects with regeneration heater through air conduit. Exit of regeneration connects with regeneration wind fan. Two ends of sensible heat exchanger respectively connect with fan and direct evaporation condensation device. Two ends of air condition compressor of evaporation condensation subsystem respectively connect with evaporator and condensator. The other end of condensator connects with throttle device. The other end of throttle device connects with evaporator to form a loop. Adopting the invention, deep dry and evaporation condensation are reduced; evaporator's size is reduced; energy consumption and noise are reduced and heat pollution is lightened for fully using waste heat produced by system.

The invention relates to a generating device of quasi-monodispersed submicron aerosol by using an evaporation condensation method. The generating device comprises a high-pressure gas source, a first filter, a sprayer, a diffusion desiccator, a second filter, a saturator, a reheater, a condenser tube, and a first valve as well as a second valve, wherein, the first valve and the second valve are respectively used for adjusting the flow capacity of the second filter and the saturator; the high-pressure gas source adopts a high-pressure air source; the reheater and the condenser tube adopt metallic conduits; a baffle plate is arranged at a jet exit of the sprayer; a screen mesh or a closing ring is arranged at the inlet of the condenser tube. The generating device is convenient and durable, the running cost is low, the median diameter in aerosol generating counting ranges from 0.08 micrometres to 0.5 micrometres, the geometric standard deviation is less than 1.3, the counting concentration ranges from 1*10<4> to 1*10<8>/cm<3>, the stability and the repeatability are good when in generation, and the requirements of various equipment inspections and experimental researches can be satisfied.

The invention discloses a solid-phase dispersed microwave extraction method of residual sample base and solid-phase dispersed microwave extraction filler and extraction solvent, which comprises the following steps: 1) mixing the detected sample and solid-phase dispersed microwave extraction filler; grinding evenly; 2) adding the extraction solvent in the microwave generator to proceed the microwave radiation; 3) removing the solid impurity to obtain the extract with residue; removing the solid impurity through eccentric action; proceeding rotary evaporation condensation for the extract; dissolving fitful residue as solvent; purifying through the special right mixed purifying agent to analyze the sampling usage for instrument. The invention can extract object compound with different chemical properties effectively.

The invention discloses a heat pipe cooling system for a server cabinet. The heat pipe cooling system for the server cabinet comprises a first heat exchanger, a connecting pipeline and a second heat exchanger, wherein the first heat exchanger is arranged at a grid of at least one out of a front cabinet plate, a rear cabinet plate, a left cabinet plate and a right cabinet plate of the server cabinet, faces towards a hot air outlet and consists of a plurality of groups of heat pipes; the heat pipes are filled with refrigerant working media; the connecting pipeline is arranged between the first heat exchanger and the second heat exchanger; the refrigerant working media are subjected to circular evaporation-condensation gas-liquid phase transition between the first heat exchanger and the second heat exchanger through the connecting pipeline, so as to bring heat from the first heat exchanger to the second heat exchanger; and the second heat exchanger is arranged far away from the server cabinet, and exchanges the heat with an outside cooling system. According to the heat pipe cooling system for the server cabinet, the first heat exchanger for cooling a server is arranged at the grid of the cabinet plate of the server cabinet, so that the space of a server room is saved; and the first heat exchanger faces towards a hot air object directly for cooling, and the efficiency is improved.

A method for preparing a high-purity and high-density polycrystalline CeB6 cathode material pertains to the technical field of rare earth boride cathode materials. The existing preparation process of the CeB6 is complicated, and the obtained sample has low purity and poor density. The method comprises the following steps: cerium hydride nano-powder is prepared by a DC arc evaporation condensation process, then the cerium hydride nano-powder and boron powder are mixed by grinding in a hypoxia environment, and sintered in vacuum or a high-purity argon atmosphere by a discharge plasma sintering technology to obtain the polycrystalline CeB6 cathode material. The method has the advantages of simple process and low sintering temperature, and that the prepared cathode material has high purity, good density, high chemical purity and excellent emission performance.

The invention relates to a sea water desalination installation that employs an evaporation-condensation system which operates continuously at a low temperature and which enables the recovery of energy released. The inventive installation comprises a cylindrical evaporator having a large evaporation surface and a concentric condenser with a large surface area. Sea water is used to cool the condenser and said water is subsequently sent to the evaporator. A static high-pressure ventilator is used to: (i) drive the vapour/air in a closed circuit between the evaporator and the condenser and (ii), using a calibrated nozzle, create a pressure gradient that is equivalent to the pressure of the saturated vapour at working temperature between said two zones. The aforementioned evaporator and condenser are thermally insulated in relation to one another and to the external environment.

The invention discloses a lunar vehicle temperature control system. The lunar vehicle temperature control system comprises a self-circulation fluid circuit, a phase-changing material energy storage device and a solar driving evaporation condensation self-reflux heat exchanging device, wherein the self-circulation fluid circuit comprises a liquid storage tank, a liquid pipeline, a porous core evaporator, a gas pipeline and a capillary pipe temperature control flow valve which is connected to the liquid pipeline; the phase-changing material energy storage device comprises an energy storage box and a phase-changing material which is arranged in the energy storage box, and the porous core evaporator is arranged in the energy storage box; the solar driving evaporation condensation self-reflux heat exchanging device comprises a vacuum pipe and a phase-changing heat conduction medium in the vacuum pipe, the vacuum pipe comprises a heat absorption evaporation area and a heat release condensation area, the heat release condensation area is arranged in the phase-changing material of the energy storage box, and a tree-shaped branch rib structure is arranged in the heat release condensation area. By adopting the temperature control system, the heat balance of a lunar vehicle body is maintained, the high-efficiency transmission of the heat can be realized without power supply, the heat supply safety and long-term running stability of the lunar vehicle can be greatly improved at moonlit night, and a reliable temperature control effect can be provided for the lunar vehicle.

The invention relates to a coal-fired power plant desulfurization waste water zero-emission treating technology and a device special for the treating technology. The treating technology comprises the steps that the treating process of pretreating desulfurization waste water, carrying out membrane concentration and MVR falling membrane evaporation and concentration and separating salt is adopted, meanwhile, about 60% of membrane-produced water and about 40% of condensate water are obtained and recycled, and thus zero emission of the desulfurization waste water in a coal-fired power plant is achieved. According to the coal-fired power plant desulfurization waste water zero-emission treating technology, membrane concentration is additionally carried out after pretreatment, the salt content of pretreatment outlet water of the desulfurization waste water reaches 5%-10% from 2%-3% through condensation, a less amount of evaporation is achieved, and energy consumption is reduced; in addition, MVR falling membrane evaporation condensation and MVR forced circulation evaporation crystallization are adopted in an evaporation crystallization system, the energy consumption loss of the evaporation crystallization system is lowered, the separating effect of salt is also improved, and good environment benefits and economic benefits are achieved.

The invention discloses a system and a method for recovering VOCs at the top of a tank and reusing nitrogen gas. The system comprises a pressurization subsystem, a condensation subsystem, a pressure swing adsorption subsystem and a nitrogen recovery subsystem, wherein the pressurization subsystem comprises a pressurization air pump and a flame arrester; the condensation subsystem comprises a regenerative heat exchanger, a precooling heat exchanger, a shallow cooling heat exchanger, a cryogenic heat exchanger, an explosion-proof refrigeration compressor, a condensation heat exchanger, an evaporation condensation heat exchanger, a throttling element and the like; the pressure swing adsorption subsystem comprises more than two groups of pressure swing adsorption devices which are arranged inparallel; and the nitrogen recovery subsystem comprises a nitrogen buffer tank and a one-way valve. According to the invention, the pressure regenerative heat exchanger, the precooling heat exchanger,the shallow cooling heat exchanger and the cryogenic heat exchanger are used for gradual cooling condensation, pressure swing adsorption recovery and purification of the VOCs gas at the top of the tank, and finally the VOCs are recycled; the nitrogen at the top of the tank is reused after purification; and the unit does not have any secondary pollution during operation.

The invention provides a bismuth telluride bulk nanometer material and a preparation method thereof, belonging to the field of nanometer material preparation. The material of the invention is characterized in that the chemical composition thereof is Bi2Te3 and the grain size thereof is 30nm to 100nm. The preparation method provided by the invention is characterized by comprising the following steps: preparing the nanometer powder of tellurium (Te) and bismuth (Bi) with the grain size thereof being 10nm to 50nm at the argon atmosphere with the pressure of argon being 0.05 to 0.1 MPa by the DC (direct current) arc evaporation condensation method using the simple substance bulks of Te and Bi as the anode and the metal tungsten (W) as the cathode respectively; grinding and mixing the nanometer powder of Te and Bi in the molar ratio of 3:2 at the argon atmosphere, and loading the nanometer powder into a graphite mould; placing the graphite mould in an SPS (Spark Plasma Sintering) cavity for sintering under the conditions that the axial pressure of 30 to 50 MPa is applied, and the atmosphere adopts argon, or the vacuum degree is 5 to 8 Pa; furnace-cooling to the room temperature to obtain the bismuth telluride bulk nanometer material. The preparation method of the invention has the advantages that the process is simple, the purity of the prepared bismuth telluride bulk is high and the grain size is controllable.

The invention discloses a heat recovery type evaporation-condensation type water cooling unit and belongs to the technical field of air conditioner units. An existing evaporation-condensation type water cooling unit is low in heat recovery rate and low in hot-water recycled temperature in a heat recovery working condition. A water cooling channel performing heat exchange with a refrigerant channel B of a flooded evaporator is additionally arranged in the flooded evaporator, the water cooling channel is connected with a water collection pool through a water pipe to take water from the water collection pool to perform heat exchange with the refrigerant channel B; equivalently, an overheating device is additionally arranged in the flooded evaporator, the low-pressure low-temperature saturated gaseous refrigerant in the flooded evaporator becomes supersaturated vapor after performing full heat exchange with the cooling water at the temperature of about 25 DEG C introduced from the water collection pool, the suction temperature and the suction superheat degree of a compressor are increased accordingly, and the discharge temperature of the compressor is increased; and by means of the heat recovery type evaporation-condensation type water cooling unit, the problems that the evaporation-condensation type water cooling unit is low in heat recovery rate and low in hot-water recycled temperature in the heat recovery working condition are solved.

The invention relates to a method for recovering tantalum, silver, nickel and iron from a waste tantalum capacitor. The method comprises the following steps: firstly, the waste tantalum capacitor is mechanically crushed, and metal and nonmetal are separated to obtain a metal material; then, the metal material is magnetically separated to separate out a nickel-iron magnetic material; then, a residue is screened to obtain silver-contained tantalum-enriched powder; then, the electronic beam smelting is performed for the tantalum-enriched powder, and metal silver is separated out through evaporation-condensation; and finally, a residual metal tantalum material (containing less tantalum oxide) is reduced to obtain high-purity metal tantalum. The method is simple, generates no poisonous gas and waste liquid in the whole process, prevents the environmental pollution caused by traditional thermometallurgy and hydrometallurgy, and realizes the resource utilization of the waste tantalum capacitor under environment-friendly condition.

The invention discloses a method for processing smelting waste acid.The method sequentially comprises the steps of evaporation condensation, vulcanization, inversion, crystallization and the like on waste acid.By means of the method, gypsum residues are not produced, that is, secondary pollution is not produced.Multi-effect preconcentration is firstly adopted for the waste acid, 80% or above of water in the waste acid is removed, the steam condensate does not contain fluorine or chlorine and can be circularly used, and sodium sulphide is still adopted to remove arsenic in the waste acid; due to the fact that the concentration of the waste acid is improved to 20-35%, the vulcanization arsenic removing efficiency and the heavy metal removing efficiency are obviously improved, and arsenic can be recycled conveniently; the method has the advantages that investment is small, operation is safe, the processing cost is low, and operation is easy.

The invention discloses a computing method for the building-material heat conductivity coefficient. According to the computing method, porous building materials are subjected to heat and moisture coupling transfer mechanism analysis, the vapor partial pressure gradient and the temperature gradient serve as driving potential, and a moisture-free-phase-change heat and moisture coupling transfer control equation is established; a transfer coefficient expression for reflecting moisture-heat interaction is given. Based on the moisture-free-phase-change heat and moisture coupling transfer control equation, a phase-change moisture source and a heat source are introduced in cooperation with the evaporation condensation theory, and a moisture-phase-change heat and moisture coupling transfer controlequation is established. According to the mutual influence effect between moisture phase changes and temperature and moisture fields inside the porous building materials, a heat-conduction-additionalloop iteration computing method is provided, and the heat conductivity coefficient caused by moisture transfer and moisture phase changes is obtained after computing.

The invention discloses a preparation method of ferric phosphate with high tap density. The preparation method comprises: 1) synthesizing solid ferrous phosphate by using a liquid phase precipitationmethod; 2) preparing a ferrous phosphate slurry from the solid ferrous phosphate; and 3) adding a phosphoric acid and hydrogen peroxide mixed solution to the ferrous phosphate slurry in a dropwise manner, and carry out a reaction to obtain a ferric phosphate precursor material with characteristics of large particle, nearly spherical shape and high tap density. According to the present invention, the method has characteristics of simple operation, low agent consumption, less wastewater generation and high ammonia nitrogen concentration, wherein the wastewater can be subjected to evaporation condensation treatment so as to avoid the problem of high concentration ammonia nitrogen wastewater treatment.

The invention provides a heat pump air-conditioning system combining an air source heat pump with a small temperature difference heat exchange tail end, which has two different structures. The first structure comprises a system controller and component parts connected with the system controller respectively; and the second structure further comprises a condensation-evaporation device, a throttle, an evaporation-condensation device and a second condenser. Based on the air source heat pump and the small temperature difference heat exchange tail end, the two structures realize three different running modes as follows: a refrigeration mode that an air source water cooling and heating machine set is matched with the small temperature difference heat exchange tail end, a heating mode that the air source water cooling and heating machine set is matched with the small temperature difference heat exchange tail end, and a mode that domestic hot water is prepared by the air source water cooling and heating machine set. Through the utilization of the same set of system, the functions of effective refrigeration, heating and domestic hot water preparation are realized at the same time, and through utilization of the small temperature difference heat exchange tail end, the outlet water temperature of the air source water cooling and heating machine set in winter heating is reduced greatly, and the condensation temperature of the machine set is reduced, so that the energy efficiency ratios of the machine set and the system are improved.

The invention belongs to the field of innocent treatment of hazardous wastes, and provides an innocent treatment method for a liquid crystal panel, which comprises the following steps: A. crushing the liquid crystal panel; B. soaking the crushed liquid crystal panel pieces in an acetone solution, performing evaporation condensation on the acetone solution after soaking, and recovering liquid crystals dissolved in the acetone solution; C. soaking the crushed liquid crystal panel pieces which have been soaked in the acetone solution in a sulfuric acid solution, and recovering solid-phase residue after soaking; and D. performing extraction and back extraction treatment on the sulfuric acid soaking solution, and recovering to obtain an indium-containing purified solution. The invention provides an innocent treatment system for a liquid crystal panel, which comprises a crusher, a feeding device, a soaking device, a distilling device, a condensing device, a first storage device, a second storage device, a third storage device, a fourth storage device, a fifth storage device, a sixth storage device, an extraction device, a back extraction device, a transfer pump and pipelines for connection. The invention is used for innocent treatment of a liquid crystal panel.

A disclosed 2-naphthol wastewater processing technology comprises adjusting the pH value of wastewater to be neutral, then enabling wastewater to enter MVR water processing operation and performing evaporation concentration, and returning clear water obtained after evaporation condensation to a workshop for reutilization; cooling wastewater subjected to concentration, crystallizing to precipitate sodium 2-naphthalenesulfonate, then performing separation, enabling the obtained filtrate to enter refrigeration desalting operation and performing cooling reprocessing, crystallizing to precipitate inorganic salts, performing separation on the crystal-containing concentrate to obtain the inorganic salts, and drying; and enabling the clear liquid subjected to refrigeration desalting to enter the MVR water processing operation and performing cyclic concentration. The processing technology performs cooling crystallization separation on wastewater at different temperature by utilizing the principle that the solubility difference of organic salts and inorganic salts is large in wastewater at different temperature, thereby effectively removing sodium 2-naphthalenesulfonate, sodium sulfite and sodium sulfate in wastewater. The processing technology is simple, employed equipment is less, energy consumption is less, cost is low and processing efficiency is improved.

The invention relates to a temperature differential mine air conditioner system, which comprises a fluid medium, a refrigerator, a compressor device, a heat pump central water heater, a low-temperature liquid storage device, an evaporation heat exchanger device, an evaporation-condensation heat exchange device, a condensation heat exchange device and a pipeline system for tightly and circularly connecting the devices in sequence. The temperature differential mine air conditioner system is characterized in that the evaporator heat exchange device is arranged underground; the condensation heat exchange device is arranged at the position on the ground and/or underground, which is economic and easy to discharge condensation heat, preferably the position on the ground; and the fluid medium circularly flows in the pipeline system. The system solves the problems of difficult delivery, complicated pipeline, high investment and insusceptible discharge of the condensation heat of a secondary refrigerant of the mine air conditioner.

The invention discloses an evaporation condensation high-efficiency screw water chilling unit with a deep supercooling device and belongs to refrigeration machinery. The water chilling unit overcomes the shortcomings of poor operation efficiency of the unit and the like in the prior art of improving supercooling degree. The water chilling unit comprises a compressor, an evaporation condenser, a liquid storage, a throttling device and an evaporator. The outlet side of the evaporator is connected with the inlet side of the compressor. The water chilling unit is characterized in that a deep supercooling device is connected in a circulation refrigerant loop between the liquid storage and the throttling device, a water collecting tank is arranged at the bottom of the evaporation condenser, and a cooling water pipe conducting heat exchange with the circulation refrigerant is introduced in the deep supercooling device and communicated with the evaporation condenser. The liquid refrigerant and normal temperature tap water conduct heat exchange in the deep supercooling device to enable high pressure liquid refrigerant to release heat to the cooling water, the temperature of the refrigerant entering the throttling device is greatly reduced under the premise that the heat exchange effect of the condenser is not affected, and deep supercooling is achieved.

The invention provides a method for preparing copper sulfate in the mode that stanniferous copper slag is leached in selective mode and free of evaporation. The method includes utilizing sulfuric acid with the density as 70-250g/L as a leaching agent, conducting leaching on burning copper slag produced in the tin smelting process for 0.5 hour to 2 hours under the temperature of 80-98 DEG C according to the solid-to-liquid ratio of 1:3-6 to obtain slurry, conducting filtering on the leached slurry under the temperature of 80-98 DEG C to obtain leachate and leaching slag respectively, conducting conventional cooling on the leachate for crystallization and then conducting centrifuging separation to obtain copper sulfate and crystallization mother liquid. The method does not require adding a purifying agent or setting independent purifying and purity-removing work procedures and has no evaporation condensation process, thereby being high in production speed and remarkable in energy-saving effect, remarkably reducing energy consumption due to the fact that the energy consumption is only about 10% of the traditional evaporation condensation process, avoiding vicious circle of copper in the tin smelting process and being free of waste liquid and waste slag discharge and high in resource comprehensive utilization rate.