41results about "Sublimation" patented technology

A system for capturing a target condensable gas may include: a supersonic condensation nozzle configured to receive a gas flow having a target condensable gas content, and for accelerating said gas into a supersonic gas flow, at least one particle injector in the supersonic nozzle for injecting particles for the particles to be in the supersonic gas flow, whereby target gas condensate forms onto some of the particles, an expansion device defining a conduit having a convex corner causing the flow of the particles with target gas condensate to generate expansion waves to separate the flow into a first flow path having an increased concentration of particles with target gas condensate thereon and into a second flow path of gas with lowered target condensable gas content, and a divider having at least a first conduit, the divider configured to collect the first flow path.

This application relates to the field of tail gas absorption technology, specifically disclosing a tail gas absorption device for phenothiazine production. The pretreatment mechanism in this application can induce sublimation of phenothiazine microcrystals in the tail gas through multiple stages, allowing the microcrystals to grow sufficiently to a collectable size before entering the collection zone. Then, a multi-stage blade collection mechanism progressively adheres and collects the grown microcrystals, achieving efficient recovery of the phenothiazine microcrystals. Simultaneously, an absorption tower is set up to absorb hydrogen sulfide from the collected tail gas with alkaline solution, and an activated carbon adsorption tower is set up to deeply purify residual hydrogen sulfide and volatile organic compounds. This forms a complete treatment chain with graded treatment and each stage performing its specific function, effectively solving the problem of blockage caused by microcrystals directly entering the absorption tower in existing technologies, while also achieving the recycling of high-value products.

This utility model relates to the field of concentration technology and discloses a low-temperature concentration device for sea buckthorn extract, including a base plate. Two racks are fixedly installed on the upper surface of the base plate, and a processing chamber is installed on the upper surface of the base plate. First mounting plates are fixedly installed on both the left and right surfaces of the base plate. An auxiliary mechanism is set on the racks, and the auxiliary mechanism includes two sliding plates and two top plates. Sliding grooves are formed on the adjacent surfaces of the two racks, and the front and rear ends of the two sliding grooves are open. The two sliding plates are slidably installed inside the two sliding grooves. By rotating the two first handles, the two first handles drive the two top plates away from each other, so that the sliding plates can move inside the sliding grooves, thereby allowing the shelves to move back and forth. This makes it easier for workers to place sea buckthorn extract on the shelves, thereby improving the concentration efficiency of the concentration device for sea buckthorn extract.

A method and system for separating sublimable compounds from hydrocarbons are disclosed. A feed fluid stream consisting of hydrocarbons and sublimable compounds is introduced into the upper chamber of a vessel. The feed fluid stream is cooled in the upper chamber, causing a portion of the sublimable compounds in the feed liquid stream to sublimate to form a product gas stream and a sublimable compound snow-like substance, the latter of which is collected in the lower chamber of the vessel. The lower portion of the sublimable compound snow-like substance is melted to form a liquid sublimable compound stream, such that the upper portion of the solid sublimable compound snow-like substance remains as an insulating barrier between the upper chamber and the liquid sublimable compound stream. The sublimable compound stream is removed from the ore liquid at a rate matching the rate of formation of the solid sublimable compound snow-like substance, thereby maintaining the insulating barrier.

The application discloses a sewage treatment system and method based on coupling of frozen crystallization and vacuum sublimation, which is suitable for treatment of high-salinity wastewater, refractory organic wastewater and heavy metal wastewater, and comprises a raw water precooling treatment unit, a frozen crystallization unit, a vacuum sublimation unit, a water vapor condensation unit and a control unit; after being cooled by the precooling treatment unit, raw water enters the frozen crystallization unit, a low-temperature rotating wheel rotates in a condensation chamber, and an ice layer is formed on the surface. The ice layer carrying pollutants enters a vacuum sublimation chamber, sublimates under vacuum and low-temperature conditions, water vapor is recovered after condensation, and pollutants such as salts are collected by a drawer-type collection tank. The control unit automatically adjusts process parameters according to real-time monitoring data, and efficient and stable treatment is realized. The application adopts a coupling process design, combines frozen crystallization with vacuum sublimation, synchronously realizes water purification and salt recovery, links a precooling unit with a water vapor condensation unit, and greatly reduces energy consumption compared with a traditional evaporation method.

The sublimable film formation composition of the present invention includes a sublimable substance and a solvent in which a saturation solubility of the sublimable substance is more than 10% by mass.

The invention relates to the technical field of gasification containers, in particular to a precursor sublimation mixing device which comprises a bottle body, and a carrier gas inlet and a gas outlet are formed in the bottle body; the tray structure is located in the bottle body and used for containing a precursor; a sealing cavity is formed in the gas mixing tank, a first gas inlet, a second gas inlet and a gas outlet are formed in the gas mixing tank, the first gas inlet and the second gas inlet are used for receiving a precursor brought by carrier gas, and an included angle is formed between the gas inlet direction of the first gas inlet and the gas inlet direction of the second gas inlet; airflow between the first air inlet and the second air inlet is opposite to each other in the sealing cavity to form turbulent flow, and the air outlet is communicated with the air outlet. According to the gas mixing tank, the first gas inlet and the second gas inlet which are interwoven in the gas inlet direction are formed in the gas mixing tank, so that after carrier gas with precursor steam enters the sealing cavity, the carrier gas and the precursor steam are fully collided and mixed, the mixing efficiency is remarkably improved, and the uniformity and the stability of the output gas concentration are improved.

Processes using liquid transfer fluids with a triple point temperature below -125°C (such as isopentane) are carried out to recover the cold energy used to sublimate and melt frozen material (especially CO2) on the exchanger surface. The same fluid circulates through two coupled circuits, one for pure cooling and the other for heat transfer during the thawing operation, transferring the cooling capacity recovered during the thawing process.

The present invention relates to a condensate trap device 110 and an air purification system 2, in particular for a film stretching machine 1. The condensate trap device 110 comprises at least one movably mounted condensation element 112 and at least one drive unit 114. The drive unit 114 is coupled to the condensation element 112 in such a way as to drive the condensation element. The condensation element 112 is arranged in the condensate trap device 110 so that a contaminated airflow (214) passes through and / or over it. The movably mounted condensation element 112 is configured such that contaminants carried by the airflow 214 condense on the at least one condensation element 112. By moving the condensation element 112, the condensed contaminant can be at least partially removed from the condensation element.

The utility model relates to fluorine chemical industry technical field, concretely relates to a hydrogen fluoride gas heat exchange device. The hydrogen fluoride gas heat exchange device, include: primary heat exchanger, first production pipeline in primary heat exchanger is communicated with the purification tower, primary heat exchanger has first liquid outlet, first liquid outlet is communicated with first production pipeline, still be provided with first heat exchange pipeline in primary heat exchanger, and the export of first heat exchange pipeline is communicated with rectifying column, crude acid tank, crude acid tank is communicated with first liquid outlet through first liquid pipeline, and crude acid tank is communicated with first heat exchange pipeline through crude acid circulating pipeline. The hydrogen fluoride liquid in crude acid tank is used as refrigerant and hydrogen fluoride gas to carry out heat exchange, can effectively save a part of refrigerant, reduce enterprise cost and burden, simultaneously, the hydrogen fluoride liquid after heat exchange sublimes into hydrogen fluoride gas, can carry out secondary impurity removal, still can reduce the steam consumed when heating hydrogen fluoride liquid, further reduced enterprise cost.

The application discloses a device for separating and recovering valuable metals and arsenic in flue gas, which comprises a filter dust collecting chamber, a cooling chamber, a flue and a bag dust collecting chamber. The filter dust collecting chamber is used for filtering valuable metal particles in flue gas. The cooling chamber is communicated with an air outlet of the filter dust collecting chamber. A spraying assembly is arranged in the cooling chamber. The spraying assembly is used for spraying mist to cool the flue gas to a temperature at which gaseous arsenic trioxide in the flue gas is condensed into glass. The flue is arranged above the cooling chamber and communicated with a top air outlet of the cooling chamber. The flue defines a flue gas passing channel extending in the up-down direction. The cross-sectional area of the flue gas passing channel gradually increases from bottom to top. The bag dust collecting chamber is communicated with an air outlet of the flue and used for collecting arsenic trioxide in the glass state. The device for separating and recovering valuable metals and arsenic in flue gas has the advantages of high recovery efficiency of valuable metals and arsenic trioxide, low requirement and cost of subsequent flue gas treatment.

The invention relates to the technical field of electric propulsion tests, and provides an iodine vapor collecting device which comprises a refrigeration cabinet, a heat transfer medium and a collecting pipeline. The refrigeration cabinet comprises a bottom box and a cover plate, the cover plate covers the bottom box, the heat transfer medium is arranged in the bottom box, and the bottom box has a refrigeration function so that the heat transfer medium can be maintained in a low-temperature state in which iodine vapor can be condensed; the collecting pipeline is of a U-shaped structure. The refrigeration cabinet and the heat transfer medium are used for providing a low-temperature environment for the collection pipeline where the iodine vapor is located, iodine vapor desublimation collection is achieved, and the device is simple, easy to achieve, convenient to assemble and disassemble, capable of rapidly providing the low-temperature environment and capable of achieving adjustment of the environment temperature; the iodine vapor is collected, so that emission of harmful gas and environmental pollution are avoided, and the iodine working medium electric thruster ground test device has wide applicability and can promote development of an iodine working medium electric thruster ground test.

A silicon oxide preparation apparatus includes a heating furnace, a heating device, a crucible, a collecting device, and a vacuum device. The heating furnace has a heating zone inside; the heating device and the crucible are disposed in the heating zone, and the crucible has an upper opening; the collecting device is disposed between the heating zone and the inner wall of the heating furnace, and includes a collecting cylinder, a fixing plate, and multiple adsorbents, wherein: the collecting cylinder includes a top plate, a bottom plate, and a cylinder body; the top plate has an outlet, the bottom plate has an inlet, the inlet is connected to the upper opening of the crucible, and the cylinder body has an inner wall surface; the fixing plate is disposed in the cylinder body, and an airflow channel is formed between the outer periphery of the fixing plate and the inner wall surface of the cylinder body; the multiple adsorbents are disposed on the fixing plate; the vacuum device is connected to the outlet of the top plate of the collecting device.

The present application relates to the technical field of tail gas treatment, and provides a carbon dioxide expansion purification system and method, electronic equipment and storage medium, comprising: a cold end subsystem, a hot end subsystem, a tail gas treatment subsystem, a communication component, a first fan connected with the cold end subsystem, and a second fan connected with the tail gas treatment subsystem; the cold end subsystem is connected with the hot end subsystem and the tail gas treatment subsystem respectively, and the hot end subsystem is in communication connection with the tail gas treatment subsystem through the communication component. The present application sends the control signal of the first fan in the cold end subsystem to the tail gas treatment subsystem through the communication component, and controls the second fan to operate based on the control signal, so as to purify the cold end tail gas and improve the efficiency of waste gas purification.

The application relates to the technical field of semiconductor manufacturing equipment, and particularly provides a molecular beam epitaxy equipment pollutant in-situ cleaning system and method. The system comprises a radiation heating unit, a condensation capturing unit, a temperature acquisition assembly and a controller. The controller is used for acquiring metal type information of a metal to be cleaned and current vacuum degree of the molecular beam epitaxy equipment when the molecular beam epitaxy equipment does not perform a process, then determining a target temperature interval according to the metal type information and the current vacuum degree, and further used for controlling the condensation capturing unit to switch to a low-position working state, and controlling the radiation heating unit to perform radiation heating on a substrate heater, so that side wall temperature information is located in the target temperature interval, until a time length during which the side wall temperature information is maintained in the target temperature interval reaches a preset time length, and then controlling the condensation capturing unit to switch to a high-position retracted state. The system can effectively reduce the pollutant deposition amount of the substrate heater side wall.

The present invention provides a system and a method for performing evolved gas analysis and gas chromatography on a single sample within a single experiment. The system and the method enable the simultaneous acquisition of thermal and compositional data by splitting evolved gases from a micro-furnace into two analytical pathways. A first pathway is directed to an evolved gas analysis (EGA) tube, and a second pathway is directed to a gas chromatography (GC) column following temporary cryogenic trapping. After completion of the EGA stage, the trapped gases are released and transferred into the GC column via an internal cryo-trap, and a GC-MS analysis is performed on the same sample. Upstream and downstream splitter connections and multiple transfer lines route gases efficiently without requiring additional sample preparation.

This invention relates to the field of non-ferrous metal metallurgy, and particularly to a zirconium tetrachloride purification system and method. The zirconium tetrachloride purification system includes a purification furnace; a vacuum collection tank connected to the furnace via a first pipeline, on which an exhaust valve is installed, and a discharge port at the bottom of the vacuum collection tank; a circulating cooling water system connected to the vacuum collection tank; a filter connected to the vacuum collection tank via a second pipeline, on which a first pneumatic valve is installed; a tail gas spray tower connected to the filter via a third pipeline; and a control system electrically connected to the exhaust valve and the first pneumatic valve. This zirconium tetrachloride purification system and method solves the problems of low control accuracy and inherent dangers in existing zirconium tetrachloride purification methods.

This application provides a method for the sublimation purification of electronic-grade molybdenum-based compounds, belonging to the field of electronic specialty gas purification technology. The method includes the following steps: S1. A solid raw material is placed in a sublimation tube, and high-purity inert gas is supplied into the sublimation tube until the pressure is not lower than 0.1 MPa. High-purity inert gas is continuously supplied under heating conditions to purge the solid raw material in the sublimation tube. The processing temperature is higher than the sublimation point of low-sublimation-point impurities at this pressure but lower than the sublimation point of the molybdenum-based compound at this pressure, yielding an intermediate. S2. The temperature of the sublimation tube is lowered to room temperature, and the supply of high-purity inert gas is stopped. The sublimation tube is evacuated until the pressure drops below 100 Pa. Then, the intermediate in the sublimation tube is heated, wherein the processing temperature is not lower than the sublimation point of the molybdenum-based compound at this pressure. The molybdenum-based compound prepared by this method has both high purity and high yield.

This invention discloses an oil removal device and method for fried foods. The oil removal device includes a frame and an upper chamber, a middle chamber, and a lower chamber arranged sequentially from top to bottom. Each chamber is equipped with a conveying mechanism and connected by a transfer trough with a rotary airlock discharge valve, enabling continuous production and maintaining pressure isolation between the chambers. The upper chamber forms a microcrystalline frozen layer on the food surface through an ultra-low temperature spray mechanism. The middle chamber causes oil to migrate to the surface under the action of a vacuum system and a heating mechanism. The lower chamber peels off the surface oil through a pulsed airflow jet device. This invention solves the problems of difficult vacuum isolation and discontinuous production in existing equipment through a three-layer vertical layout and airlock design, combined with freeze-drying and other technologies. It has the advantages of high oil removal efficiency, oil recovery, good food quality, and low energy consumption.

The utility model relates to a kind of dechlorination device for high-purity arsenic production, including main body mechanism, adsorption mechanism, heat dissipation mechanism, material receiving mechanism, the adsorption mechanism is located inside main body mechanism, the heat dissipation mechanism is located main body mechanism side, the material receiving mechanism is located main body mechanism side, the utility model passes through feed pipe and adds chlorine-containing impurity arsenic raw material to adsorption tank by motor driving heating disc rotation uses centrifugal force and evenly disperses to heating disc on raw material, raw material is heated to 620 DEG C to 650 DEG C by heating disc, ensure that chlorine-containing impurity arsenic raw material completely sublimes, avoid liquid residue, after sublimation, arsenic steam is adsorbed in raw material by five layer MOFs adsorption layer in adsorption tank, after adsorption, arsenic steam is entered into material receiving tank by steam pipeline, while steam pipeline is equipped with condenser pipeline, and arsenic steam is cooled, temperature 100 DEG C to 150 DEG C is condensed as solid high-purity arsenic.

The application relates to the technical field of deuterated ammonia purification, in particular to a deuterated ammonia purification and filling system and process. The system comprises a light-removing tower, a heavy-removing tower, a fine product cold trap, a filling row and a crude product cold trap, each device is connected through a specified pipeline, the light-removing tower, the heavy-removing tower and the filling row are connected with an online detection system, and some pipelines are provided with pneumatic diaphragm valves. The process takes 4N deuterated ammonia as raw material, carries out purification detection through the light-removing tower, directly fills qualified products, and re-purifies unqualified products through the heavy-removing tower; the heavy-removing tower product is filled after being qualified, and unqualified products are slowly purified; when the pressure of the equipment is higher than 0.4 MPa, the gaseous deuterated ammonia slowly enters the fine product cold trap, is vaporized after being slowly stored, and is filled, and the operation temperature and pressure range of each device are limited. The whole process flow is detected and processed through multiple stages, the purification and filling efficiency is effectively optimized, the energy consumption is reduced, the production cycle is shortened, and an efficient and energy-saving solution is provided for production units.

The present application relates to heavy metal separation and recovery technical field, more particularly, to a kind of high-efficiency separation and recovery of heavy metal device and method, device includes reaction furnace, first condensing tank, second condensing tank and tail gas treatment tank, the gas outlet of reaction furnace is communicated with the inlet of first condensing tank, the outlet of first condensing tank is communicated with the inlet of second condensing tank by first air pipe, the outlet of second condensing tank is communicated with the inlet of tail gas treatment tank by second air pipe, first air pipe is equipped with first valve and first control mechanism, first control mechanism is used to monitor the condensation end point in first condensing tank and control first valve opening and closing, second air pipe is equipped with second valve and second control mechanism, second control mechanism is used to monitor the condensation end point in second condensing tank and control second valve opening and closing.Gaseous metal element is guaranteed to be fully condensed and separated, without manual monitoring and control, improve resource utilization rate and economic benefit.

The application discloses a continuous impurity removal method for carbon dioxide in methane or natural gas. The method adopts an impurity removal device, and the impurity removal device comprises two impurity removal units. Heat exchange pipe assemblies are arranged in the housings of the two impurity removal units. Each of the two impurity removal units can perform condensation and sublimation operations for removing carbon dioxide. The two impurity removal units alternately perform the condensation and sublimation operations for removing carbon dioxide, so that the carbon dioxide in the methane or natural gas is continuously removed. The application has the advantages that the superheating exchange condenses the carbon dioxide in the methane or natural gas into crystal form and separates the carbon dioxide from the methane or natural gas, which effectively reduces the energy consumption for removing the carbon dioxide and reduces the equipment cost. The two impurity removal units alternately perform the condensation and sublimation operations for removing the carbon dioxide, so that the carbon dioxide in the methane or natural gas is continuously removed.

This invention relates to the fields of vacuum technology and cryogenic engineering, and discloses a cryogenic cold trap device and a vacuum system. The cryogenic cold trap device includes: a housing with an extraction port; an adapter connecting the housing and having an openable or closable channel; a condenser assembly housed within the housing; a cold source mounted on the housing and exchanging heat with the condenser assembly; and a drive mechanism mounted on the housing for driving the condenser assembly to move in and out of the housing along the channel. This invention, by driving the condenser assembly in and out of the housing along the channel using a drive mechanism, allows the cryogenic cold trap device to operate within an extraction pipe, achieving high cold trap efficiency. During cold trap regeneration, it can be removed from the extraction pipe, avoiding pipe shutdown and not affecting extraction operations, thereby ensuring the extraction efficiency and performance of the extraction pipe.

The utility model provides a device for waste gas cold trap processing for semiconductor chip production, including conical cylinder wind cover, cold trap, auxiliary acceleration neck, extraction fan and alkali spray tower connection, wherein: cold trap fixed mounting is in the ground right below conical cylinder wind cover, and auxiliary acceleration neck fixed mounting is in the top of conical cylinder wind cover, and this extraction fan fixed mounting is in the top of auxiliary acceleration neck, alkali spray tower connection fixed mounting is in the top of extraction fan, and is connected with the air inlet pipe of alkali spray tower, the inner wall of conical cylinder wind cover is provided with hydrogen chloride concentration detection equipment, the setting of the utility model conical cylinder wind cover and auxiliary acceleration neck can effectively extract harmful gas outward, will not scatter out gas outward, and the scattered gas can be recycled again.

A phase change crucible that includes an inner chamber comprising an inner chamber wall extending from an inner chamber floor to an inner chamber upper end, an outer chamber comprising an outer chamber wall extending from an outer chamber floor to an outer chamber upper end, wherein the inner chamber upper end terminates beyond the outer chamber upper end and the outer chamber wall encircles the inner chamber wall, an inner collection region formed by the inner chamber wall and the inner chamber floor, and an outer collection region formed by the outer chamber wall, the inner chamber wall, and the outer chamber floor.

An industrial air pollution removal system that eliminates unwanted gases from the environment includes a four-step process. The first step is an investigatory process to gather all the properties of the stack as flow rate, gas types, and hottest point of the stack. A second step captures either through water in the vat phase or sublimation of carbon dioxide and mercury into slabs of dry ice. In the byproducts, internal uses can be found to defray costs. A third step is the transportation of vat phase by truck and dry ice in refrigerated truck. A fourth step is the fractionalization center will recycle the captured emissions, such as separation of particulate matter, distillation for the liquid, sublimation of the dry ice and mercury, and using a dry ice processing plant. The goal is the sale of recycled materials as raw materials, conserve natural resources, and to positively affect climate change.

Chemical precursor recovery systems and methods of recovering and reusing semiconductor manufacturing chemistry are disclosed. The recovery systems include a cold trap inlet line in fluid communication with a plurality of cold traps and a cold trap outlet line. The plurality of cold traps is configured to condense the chemical precursors and are arranged based on semiconductor manufacturing process conditions.