384results about "Sublimation" patented technology

The invention provides a polymer devolatilization process and a devolatilization system. The devolatilization process comprises the following steps: heating a polymer raw material containing volatile components to obtain a molten polymer, pressurizing the molten polymer, mixing with an entrainer, and feeding into a falling film device; after sudden pressure drop and heating, the entrainer carries volatile components to be separated from the system, and a devolatilization product is obtained; the mass ratio of the polymer raw material to the entrainer is (10: 1)-(10000: 1). According to the polymer devolatilization process provided by the invention, the entrainer with a low boiling point is introduced into a reaction system, a large number of microbubbles are formed through vaporization of the entrainer and azeotropy of volatile components, removal of the volatile components in the material is enhanced through pressure swing flash evaporation, and extremely low pressure does not need to be reached in a devolatilization device.

The present invention relates to a process for producing molybdenum dioxide dichloride, which is a very efficient process that does not use hazardous chlorine gas and high reaction temperatures and enables the production of molybdenum dioxide dichloride in high yield without solvent.

The invention discloses a low-temperature cold trap water removal device which comprises more than two water removal channels which are connected in parallel; each water removal channel comprises a refrigeration water removal gas path and an ice melting purging gas path which are connected in series; each refrigeration and water removal gas path is also connected with an inlet of a dry gas collection gas path, and an outlet of the dry gas collection gas path is used for being connected with an analyzer; and each water removal channel is connected with a controller, and the controller is used for controlling the refrigeration water removal gas paths and the ice melting purging gas paths of the different water removal channels to operate in a staggered mode. According to the application, moisture in the gas to be dewatered can be effectively removed, frost can be timely removed, and related phenomena such as relatively large dead volume of the cold trap can be avoided.

A carbon dioxide recovery device provided with a separation device that separates carbon dioxide from to-be-separated gas (for example, combustion exhaust gas) containing carbon dioxide, wherein: in order from the upstream side where the to-be-separated gas is supplied, the separation device and carbon dioxide sublimators, which sublimate (solidify) carbon dioxide that was separated in the separation device, are connected in series, refrigerant circuits in which a fluid having cold heat serves as the refrigerant, are connected to the carbon dioxide sublimators, and the refrigerant is used to sublimate (solidify) the carbon dioxide; and when the carbon dioxide is sublimated (solidified), the carbon dioxide sublimators are depressurized and set to negative pressure so as to draw in the carbon dioxide separated at the separation device.

The present application provides a molten salt extraction and distillation separation device for zirconium and hafnium tetrachloride, comprising a distillation tower, a reboiler, a reflux tank, a circulation tank, a sublimator, a gas preheater, and a condenser. During installation, the various components are connected in sequence to obtain a complete molten salt extraction and distillation separation device for zirconium and hafnium tetrachloride. The device has a simple structure, is easy to operate, and is convenient to connect, and is suitable for the molten salt extraction and distillation separation of zirconium and hafnium tetrachloride.

The invention discloses an electronic waste efficient chlorination comprehensive recovery device and method, and relates to the technical field of chemical metallurgy, the electronic waste efficient chlorination comprehensive recovery device comprises a chlorination reaction cavity, a heating system, a vacuum system, an atmosphere control system and a condensation separation system; the heating system is used for controlling the temperature of the chlorination reaction cavity; the vacuum system is communicated with the heating system; the atmosphere control system comprises a chlorine gas source and a protective gas source; and the temperature of the condensation separation system is gradually reduced. Through the high-purity graphite heating assembly, the sealing structure and the atmosphere control system, the highest heating temperature is 1700 DEG C, the temperature limit of 1200 DEG C of a traditional quartz tube furnace can be broken through, the chlorine corrosion problem is solved, chlorine is not leaked, and the environment is not polluted. High-valued recovery of different metal resources can be achieved through low-temperature pyrolysis, high-temperature chlorination volatilization and three-stage condensation settling separation, and the method has the advantages of being low in energy consumption, high in recovery rate, environmentally friendly and the like and is suitable for industrial metal resource recovery.

The present invention belongs to the technical field of single-walled carbon nanotube preparation, and particularly relates to a device for preparing single-walled carbon nanotubes by a floating catalyst method, comprising: a reaction mechanism including a reaction furnace tube and a first heating mechanism for heating the reaction furnace tube; a first raw material conveying mechanism including a sublimation tank for storing a catalyst and a second heating mechanism for heating the sublimation tank, the sublimation tank being communicated with the reaction furnace tube through a first conveying path, wherein the catalyst in the sublimation tank is sublimated and forms a gas state by heating the sublimation tank through the second heating mechanism; a second raw material conveying mechanism including an injection pump for storing a liquid carbon source and a gas cylinder for storing a gas, the injection pump and the gas cylinder being communicated with the reaction furnace tube through a second conveying path; and a collection mechanism including a collection assembly communicated with the reaction furnace tube. The device of the present invention can improve the yield of single-walled carbon nanotubes and the stability of the preparation process.

The utility model relates to a cold trap device capable of generating high pressure in situ, which comprises a cold trap barrel body, an air inlet pipe, an air inlet pipe vacuum valve, an air outlet pipe, an air outlet pipe vacuum valve and a pressure gauge, and is characterized in that the cold trap barrel body is arranged in a liquid nitrogen Dewar; the device can utilize a low-temperature environment created by the liquid nitrogen Dewar to form a low-temperature space capable of effectively compressing or liquefying gas in the cold trap barrel body, so that the gas entering the cold trap barrel body is compressed or converted into a liquid state, and the internal temperature of the gas gradually rises along with the slow removal of the cold trap barrel body from the liquid nitrogen environment; the previously compressed or liquefied gas begins to expand, creating a higher pressure. External impurities are not introduced, extra energy input is not needed, energy consumption is reduced, the environmental protection performance is improved, and the operation efficiency of the whole system can be remarkably improved.

The invention relates to the technical field of hippophae rhamnoides extraction, and provides a hippophae rhamnoides cell sap double-cryogenic critical extraction process. A sea-buckthorn cell sap double-cryogenic critical extraction process comprises the following steps: S1, pretreatment: cleaning sea-buckthorn, and draining water to obtain pretreated sea-buckthorn; s2, performing primary cryogenic treatment, sublimation drying and secondary cryogenic treatment on the pretreated sea-buckthorn, and collecting to obtain sea-buckthorn cell sap; during primary cryogenic treatment, the cryogenic final temperature is less than or equal to-45 DEG C; during secondary cryogenic treatment, the cryogenic final temperature is less than or equal to-70 DEG C; according to the technical scheme, the problems that the recovery rate of the sea-buckthorn cell sap is low, active ingredients in sea-buckthorn are easily damaged, and industrialization of extraction of the sea-buckthorn cell sap is difficult to realize in the prior art are solved.

The utility model discloses a catcher for aluminum trichloride, which relates to the technical field of chemical equipment and comprises a barrel, a material inlet, a tail gas outlet and a material outlet are sequentially arranged on the outer wall of the barrel from top to bottom, a supporting inner barrel is mounted in the barrel, and a plurality of scrapers are mounted on the outer wall of the supporting inner barrel. The top of the supporting inner barrel is rotationally connected with the top of the barrel, a first shaft is arranged at the bottom of the supporting inner barrel, and a power mechanism for driving the first shaft to rotate is arranged at the bottom of the barrel. Therefore, firstly, the scraper is telescopic through the supporting spring, so that the end part of the scraper can be attached to the inner wall of the barrel body, and the scraping effect is ensured to the greatest extent; and secondly, the first shaft body, the second shaft body and the supporting inner cylinder in the scheme are hollow, when a thermal medium is introduced into the first shaft body, the second shaft body and the supporting inner cylinder, the supporting inner cylinder and the scraper are heated, at the moment, aluminum trichloride is only separated out on the inner wall of the cylinder body, and then aluminum trichloride particles are prevented from being attached to the outer wall of the supporting inner cylinder.

The invention provides a cooling device and a cooling method for a sublimation section. The cooling device comprises a reaction kettle (1) provided with a smooth inner wall, wherein the top of the reaction kettle (1) is provided with a gas phase port (11), the bottom of the reaction kettle (1) is provided with a discharge port (12), the middle of the reaction kettle (1) is provided with a sublimation gas phase inlet (13), and a wall of the reaction kettle (1) is further provided with a jacket (2).

A system for trapping a target condensable gas may include a supersonic condensation nozzle configured to receive a gas stream containing a target condensable gas component and accelerate the gas into a supersonic gas stream; at least one particle injector in the supersonic nozzle for injecting particles such that the particles are in the supersonic gas stream, whereby a target gas condensate is formed on a portion of the particles; an expansion device defining a channel having a lobe, causing the flow of particles containing the target gas condensate to generate an expansion wave to separate the flow into a first flow path in which a concentration of particles containing the target gas condensate increases and a second flow path in which a target condensable gas content of the gas decreases; and a diverter having at least a first channel, the diverter configured to collect the first flow path.

The invention relates to a method using a liquid transfer fluid whereof the triple point is lower than -125°C, such as isopentane, in order to recover the cold energy from the sublimation and melting of substances frozen on exchanger surfaces, and more specifically CO2. The same transfer fluid circulates in two coupled circuits; one is purely a secondary refrigerant, while the other is a heat-transfer fluid when it performs de-icing operations and a secondary refrigerant for transferring the refrigerating power recovered during de-icing operations.

The utility model provides a spray freeze-drying device. The spray freeze drying apparatus includes: a container; the atomizing structure comprises at least one first atomizing nozzle; the freezing structure comprises at least one second atomizing nozzle, the second atomizing nozzle is located on the spraying path of the first atomizing nozzle, the second atomizing nozzle is constructed to be capable of spraying out a freezing medium, and the temperature of the freezing medium is lower than the eutectic point of the to-be-dried material; the stirring mechanism comprises a driving part and a stirring assembly, and the driving part is in driving connection with the stirring assembly; the air outlet end of the ventilation assembly communicates with the containing cavity. According to the technical scheme, the problem that existing spray freeze-drying equipment is low in drying efficiency can be solved.

The utility model provides a vacuum tail gas cold trap, and belongs to the technical field of tail gas treatment. The problem that an existing tail gas treatment cooling effect is poor is solved. The vacuum tail gas cold trap comprises a shell with a liquid outlet in the bottom, a heat exchange pipe arranged in the shell, a barrel body fixedly connected in the shell and an air inlet pipe, an air outlet is formed in the top of the shell, an air inlet is formed in the bottom of the shell, the top of the barrel body is blocked, and an opening is formed in the bottom of the barrel body. A first gas passing channel for tail gas to pass through is arranged between the outer peripheral wall of the barrel body and the inner peripheral wall of the shell, the bottom of the gas inlet pipe is communicated with the gas inlet of the shell, the top of the gas inlet pipe extends into the top in the barrel body from the bottom of the barrel body, and a second gas passing channel for tail gas to pass through is arranged between the outer peripheral wall of the gas inlet pipe and the inner peripheral wall of the barrel body; part of the heat exchange pipe is located in the first air passing channel, and the other part is located in the second air passing channel. The vacuum tail gas cold trap has the advantage of improving the cooling effect of tail gas.

The invention relates to the field of vacuum technology and low-temperature engineering, and discloses a low-temperature cold trap device and a vacuum system.The low-temperature cold trap device comprises a shell provided with an extraction opening; the adapter piece is communicated with the shell and is provided with a channel which can be opened or closed; the condensation assembly is arranged in the shell; the cold source is arranged on the shell and exchanges heat with the condensation assembly; the driving mechanism is arranged on the shell and used for driving the condensation assembly to enter and exit from the shell along the channel. The driving mechanism drives the condensation assembly to enter and exit from the shell along the channel, the low-temperature cold trap device can be arranged in the air exhaust pipeline to achieve high cold trap working efficiency during working, the cold trap can be moved out of the air exhaust pipeline during regeneration, shutdown of the air exhaust pipeline is avoided, air exhaust work is not affected, and the service life of the low-temperature cold trap device is prolonged. Therefore, the air exhaust efficiency and the air exhaust performance of the air exhaust pipeline can be ensured.

The invention relates to the technical field of magnesium crystallization, in particular to a crystallization method and a crystallization device for crystallized magnesium. The crystallization method takes magnesium steam containing impurities as a raw material, and comprises the following steps: vibrating the magnesium steam; wherein the vibration frequency is larger than or equal to 50 Hz; the magnesium steam is crystallized under the vibration condition, crystal nucleuses of the magnesium steam grow in an accelerated mode, the impurities are separated, and crystallized magnesium is obtained. According to the crystallization method, vibration with the frequency of 50 Hz and above is used, the crystallization process of magnesium steam is optimized from the two dimensions of molecular dynamics and crystallization boundary layer control, and the crystal nucleus forming speed and crystallization efficiency of magnesium and the purity of a crystallized magnesium product can be improved. The unit energy consumption of the crystallization method can be controlled to be 8.0 kWh / kg or below, the impurity adhesion rate is controlled to be 40% or below, and a crystallized magnesium product with the purity being 99.90% or above can be finally obtained through the crystallization method.

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.

Discontinuously operated desublimator (1) for removing at least one gas component to be desublimated from a gas mixture flow comprising a housing wall (7) as an outer boundary, an inlet nozzle (10) on the housing wall (7) for supplying the gas mixture flow into the desublimator (1), an outlet (6) on the housing wall (7) for discharging the treated gas mixture flow from the desublimator (1), a desublimation zone (4) with temperature-controlled flow channel walls, wherein the flow channel walls are temperature-controlled such that during a loading process the at least one gas component to be desublimated desublimates at the flow channel walls, and that during a subsequent melting process the at least one gas component desublimated in the loading process melts at the flow channel walls, a gas inlet distribution chamber (3) located between the inlet (2) and the desublimation zone (4), and a gas outlet space (5) located between the outlet (6) and the desublimation zone (4), characterized by the fact that at least a first guide plate (8a), a second guide plate (8b) and a third guide plate (8c) are arranged in the gas inlet distribution chamber (3) for the uniform distribution of the gas mixture flow through the flow channels that result from the flow channel walls of the desublimation zone (4), and wherein at least three guide plates (8a, 8b, 8c) each have a distance (H LB, a-b , H LB , b-c ) to their adjacent guide plate or to their adjacent guide plates in the range of 0.01 to 0.9 * D, preferably in the range of 0.10 to 0.50 * D, wherein D corresponds to the equivalent diameter of a circle with the same area as the inlet surface (9).

The invention relates to a sublimation purification device which comprises an evaporation area and at least one condensation area, a rotatable spiral condensation assembly is arranged in a condenser in the condensation area in the axial direction, and the spiral condensation assembly comprises a central rotating shaft and spiral blades extending outwards; through continuous rotation of the spiral assembly, the geometric position of a condensation surface is forcibly changed, a crystal static growth boundary is broken to inhibit formation of loose dendritic crystals, and the dendritic crystals are prevented from touching a pipe wall to cause thermal short circuit and material overheating; in addition, a heat exchange medium runner is arranged in the spiral condensation assembly and comprises an outflow path extending from the central rotating shaft to the outer edge of the blade and a backflow path returning to the rotating shaft. According to the flow channel structure, the structural thermal resistance of long-range metal heat conduction is eliminated, full-surface isothermal cooling of an ultra-large-area spiral surface is achieved, a uniform and continuous cold source is provided while the assembly conveys materials, and finally long-term constancy and efficient and stable capture of condensation efficiency are guaranteed.

The invention belongs to the technical field of protein powder raw material processing, and particularly relates to a compound protein powder processing device and method with a blood sugar reducing function, and the device comprises a cleaning tank body, a hydrophobic material guide box chamber, a sealed material mixing tank, a hollow material gathering rotating shaft, an upper-layer gel absorption assembly and a lower-layer cross-linked substance absorption assembly, the hollow material gathering rotating shaft is rotationally connected to the interior of the sealed material mixing tank, the upper-layer gel absorption assembly is movably connected to the outer side of the hollow material gathering rotating shaft, and the lower-layer cross-linked substance absorption assembly is fixedly connected to the bottom of the hollow material gathering rotating shaft; the upper-layer gel absorption assembly of the device automatically captures floating floccules such as a loose polysaccharide-protein network, the lower-layer cross-linked substance absorption assembly accurately adsorbs precipitates, centralized treatment is performed through the hollow material gathering rotating shaft, uneven distribution of traditional mixing is avoided, the embedded annular filter screen is additionally arranged in the middle of the hollow material gathering rotating shaft, and therefore the mixing efficiency is improved. Undispersed agglomerated particles are filtered to ensure uniform distribution of mulberry leaf polysaccharide and balsam pear saponin, so that in-situ phosphorylation of floccules and precipitates is enhanced.

The invention provides methods for producing high concentration crystalline drug substances of an anti-PD-1 monoclonal antibody (mAb), wherein the mAb is pembrolizumab or a pembrolizumab variant. The invention further relates to pharmaceutical compositions comprising the crystals produced by the methods herein and methods of use thereof.

The application discloses a method for preparing high-purity ammonium rhenate by separating molybdenum and rhenium, which comprises a reaction device and a reaction process. The reaction device is a T-shaped quartz tube, which is divided into four temperature zones. The first, second and third temperature zones are located in the horizontal tube section of the T-shaped quartz tube, and the fourth temperature zone is the vertical tube section of the T-shaped quartz tube. Oxide raw materials containing molybdenum and rhenium are placed in the first temperature zone. Under the oxygen atmosphere, the high-valence molybdenum and rhenium oxides are separated in the horizontal straight tube by the temperature difference between the temperature zones. The gaseous high-valence rhenium is condensed in the fourth temperature zone to generate high-purity rhenium heptoxide. Under the assistance of high-purity ammonia water, high-purity ammonium rhenate is prepared by cooling and crystallization. The quality of the ammonium rhenate can reach 4N or above.

The flash sublimation device comprises a melting kettle, a quantitative feeder is connected to the right side of the top of the melting kettle, a residue storage tank is connected to the bottom of the melting kettle, an evaporator is connected to the center of the top of the melting kettle, and a sublimation gas outlet is formed in the top of the evaporator. The sublimation gas outlet is communicated with a desublimation device through a pipeline, the lower end of the desublimation device is provided with a pure product bin, the outer wall of the pure product bin is connected with a cyclone separator, the top of the cyclone separator is connected with a bag-type dust collector, and the top of the bag-type dust collector is provided with a vacuum system; the sublimation device is reasonable in structural design, greatly shortens the sublimation period, is low in heating temperature, and is suitable for large-scale continuous operation.

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.

Carbon capture for industrial applications, such as power plants, municipal solid waste facilities, cement production, iron & steel, petrochemicals, desalination and refineries, is disclosed herein. Embodiments employ a cryogenic system and process to capture carbon dioxide, ensuring efficient and effective capture, while also maximizing solvent recovery. This advancement enables a capability to meet the demands of diverse industries with a solution that reduces energy penalties and enhances overall operational efficiency. The approach is scalable, modular, and compact, while minimizing energy consumption.

The present invention provides a trifluoromethyl fluoroformate synthesis system and method. The trifluoromethyl fluoroformate synthesis system comprises a reaction unit, a heat exchange unit, a cold trap unit, a low-temperature rectification unit, and a recycling unit that are arranged in sequence. The reaction unit comprises a feed pipe, a discharge pipe, and a reactor. The discharge pipe is communicated with the cold trap unit by means of a third heat exchange tube, the cold trap unit is communicated with the low-temperature rectification unit, and the low-temperature rectification unit is communicated with the recycling unit. The heat exchange unit comprises a heat exchanger. The low-temperature rectification unit comprises a rectifying section and a stripping section. The recycling unit comprises a first circulating pipe and a second circulating pipe that are used for recycling a product from the rectifying section, wherein the first circulating pipe and the second circulating pipe are respectively communicated with the feed pipe by means of a second heat exchange tube and a first heat exchange tube, and the first heat exchange tube, the second heat exchange tube, and the third heat exchange tube all pass through the heat exchanger. By recycling the product from the rectifying section, the present invention reduces the loss of raw materials, and improves the product yield.

The utility model relates to the technical field of vacuum sublimation furnaces, in particular to a quick-cooling vacuum sublimation furnace which comprises a vacuum sublimation furnace body, a nitrogen filling pipe used for primary cooling is arranged at the bottom of the vacuum sublimation furnace body, and a first cooling pipeline and a second cooling pipeline used for secondary cooling are arranged on the outer wall of the vacuum sublimation furnace body. When the vacuum sublimation furnace is used and the temperature is reduced to below 400 DEG C, inert gas serving as a heat conducting medium is slowly filled into the vacuum sublimation furnace body through the nitrogen filling pipe until the pressure in the furnace body is close to the atmospheric pressure, and the inert gas in the furnace body can quickly transfer heat to the pipe wall of the furnace body to achieve the purpose of accelerating cooling; and cold water which circularly passes through is introduced into the first cooling pipeline and the second cooling pipeline, so that the cooling speed is high, and a relatively good cooling effect on the vacuum sublimation furnace body can be achieved.

A remotely controllable sublimation apparatus (300) including a crucible block (316) adapted to hold a crucible (307) containing a solid mixture including one or more radionuclides, a first heating block (350) with one or more first heating elements (358) configured to selectively generate heat having a first temperature sufficient to at least partially sublimate the solid mixture, and a collection vessel (312) coupled to the first heating block. The crucible block is movable between an open position and a closed position relative to the first heating block. When the crucible block is in the closed position, the one or more first heating elements are configured to heat the crucible block to a first temperature, thereby heating the solid mixture and generating a vapor that is collected by the collection vessel, leaving a solid residue in the crucible consisting essentially of only one or more radionuclides.

The present invention relates to solvothermal vapor synthesis methods for the crystallization of a phase from a mixture of selected inorganic or organic precursors in an unsaturated vapor-phase reaction medium.