120 results about "Cryo-adsorption" patented technology

The utility model discloses a low-temperature adsorption pump and a low-temperature adsorption array suitable for a fusion reactor. The low-temperature adsorption pump comprises a heat shielding baffle, a supercritical helium pipeline, a helium low-temperature plate, an adsorption bin, a high heat conduction plate and a gas baffle, the supercritical helium pipeline, the helium low-temperature plate, the adsorption bin, the high-thermal-conductivity plate and the gas baffle are sequentially arranged in the thermal baffle; and the adsorption bin is filled with an adsorbent. The adsorbent contained in the adsorption bin is multiple times that of a low-temperature adsorption plate with the same area, and particularly, the difference is larger when a low-temperature adsorption array is formed. Meanwhile, a single-stage heat shielding baffle can be used, enough high conductance is guaranteed, high pumping speed and large capacity can be achieved, the problem that activated carbon falls off in the operation process of the low-temperature adsorption pump is effectively solved, and the low-temperature adsorption pump can be used in the strong neutron irradiation environment such as a fusion device in the future.

The invention provides a crude helium storage and recycling system for a cryogenic helium extraction process and a recycling control method, and relates to the technical field of helium production. The crude helium storage and recycling system for the cryogenic helium extraction process comprises a membrane separation device, a permeable gas supercharging device, a pressure swing adsorption device, a low-temperature adsorption device, a first storage tank group, an unloading device, a second storage tank group, a first detection unit, a second detection unit, a first recycling loop, a second recycling loop, a third recycling loop and a control device. According to the technical scheme, the first detection unit is arranged to monitor the concentration of methane and carbon dioxide in the crude helium at the outlet of the pressure swing adsorption device, high-concentration impurities can be effectively prevented from entering the low-temperature adsorption device, the problem of equipment freezing and blocking caused by condensation is avoided, the crude helium recycling path is dynamically adjusted, and the recycling efficiency of the crude helium is improved. And the gas meeting the standard is sent to the next stage for treatment, so that the helium quality and the production efficiency can be improved in the cryogenic helium extraction process.

This invention discloses a system and method for extracting helium from natural gas. The system includes an air expander, a cooler, a cold box, and a helium purification system. The cold box includes a main heat exchanger, an air-liquid separator, and an LNG-liquid separator. The helium purification system includes an oxygen-addition and hydrogen-removal reactor, a helium purification system cooler, a helium purifier, a circulating compressor, a booster compressor, and a Dewar flask. The Dewar flask contains a heat exchanger, a gas-liquid separator, and an adsorber. This invention features a reasonable process design, simple equipment, and easy operation, achieving a helium extraction rate of up to 98%. By delivering methane to users in the form of LNG and using low-temperature adsorption to produce pure helium, the economic value of the product is improved.

This invention provides an integrated device and method for gas ultrapurification, comprising: an integrated sealed cavity; an adsorption system disposed inside the integrated sealed cavity, the adsorption system being filled with at least one adsorbent; a temperature control system disposed inside the integrated sealed cavity, including independent refrigerant circulation loops and hot medium circulation loops, for temperature control of the adsorption system; and a gas pipeline system including a raw material inlet, a displacement gas inlet, a product gas outlet, and a desorption gas outlet, each interface being connected to the integrated sealed cavity; the temperature control system controls the temperature of the adsorption system, enabling the sequential execution of a series of processes within the integrated gas ultrapurification device under the condition of an inert gas flow: preheating and activation of the adsorbent, low-temperature adsorption purification of the gas, high-temperature desorption regeneration, and cooling of the adsorbent for later use. The method of this invention is simple, easy to operate, and has broad industrial application prospects.

The invention relates to a hydrocarbon adsorption material in a cold start stage of a diesel vehicle and a preparation method and application of the hydrocarbon adsorption material in the technical field of environmental catalysis and tail gas purification, the adsorption material comprises an active component and a carrier material, the active component is Ag, the carrier material is ZSM-5 zeolite with an MFI topological structure, and the mass fraction of the active component Ag is 2.0 wt%. The carrier ZSM-5 is loaded with Ag species through a two-step ion exchange method, ammonium salt pretreatment and silver ion exchange are included, and after centrifugation, drying and air atmosphere calcination, the high-performance material for hydrocarbon adsorption in the cold start stage of the diesel vehicle is finally prepared. The prepared adsorption material has the advantages of being high in silver species dispersity, large in low-temperature adsorption capacity and good in matching of a high-temperature desorption window and DOC activation temperature, compared with traditional silver modified zeolite, the adsorption capacity is increased by 125.7% and 79.6% respectively, desorption peaks are concentrated and matched in temperature, the HCs rejection rate in the cold start-up stage is larger than or equal to 90%, and the adsorption material has the remarkable application value and is suitable for popularization and application. And upgrading and optimization of a diesel vehicle tail gas purification technology can be promoted.

A low-temperature adsorption and regeneration system, comprising an adsorption tower, a regeneration tower and a regenerated-enriched-gas treatment device (100), wherein the adsorption tower is provided with a flue gas inlet and a clean-flue-gas outlet, and the adsorption tower is internally provided with an adsorbent, which is used for adsorbing flue gas at low temperature and purifying same into low-temperature clean flue gas; the regeneration tower is used for performing regeneration desorption on the adsorption-saturated adsorbent in the adsorption tower, and the regeneration tower is provided with a regenerated-enriched-gas outlet for discharging regenerated enriched gas; and the regenerated-enriched-gas treatment device (100) is in communication with the regenerated-enriched-gas outlet of the regeneration tower and is used for separating water vapor from solid particles in the regenerated enriched gas.

The invention discloses a system and a method for purifying helium from multi-component mixed gas containing helium, and belongs to the technical field of gas purification. The system comprises a low-temperature cooling unit, a low-temperature adsorption unit and a helium product storage tank which are communicated in sequence, the low-temperature cooling unit comprises a feeding system, a low-temperature Dewar flask I and a gas-liquid separator; the gas-liquid separator is arranged in the low-temperature Dewar flask I; the low-temperature adsorption unit comprises a low-temperature Dewar flask II and an adsorption column; the adsorption column is arranged in the low-temperature Dewar flask II; multi-component mixed gas containing helium enters the gas-liquid separator through the feeding system to be separated, separated coarse helium enters the adsorption column through a pipeline, and a helium product adsorbed and separated by the adsorption column enters the helium product storage tank. The purification method adopting the system is simple and efficient, and does not need a catalytic dehydrogenation process. High-purity helium or ultra-pure helium with the purity larger than 99.999% can be obtained through one-time low-temperature condensation separation and one-time low-temperature adsorption separation.

The invention relates to the technical field of nuclear reactor engineering, and discloses a high-temperature gas cooled reactor liquid nitrogen recycling system and method. The liquid nitrogen recycling system for the high-temperature gas cooled reactor comprises a low-temperature adsorber, a high-temperature gas cooled reactor, a high-temperature gas cooled reactor, a high-temperature gas cooled reactor and a low-temperature gas cooled reactor, the low-temperature adsorber is communicated with an exhaust pipeline, the exhaust pipeline is communicated with the atmosphere, the exhaust pipeline is communicated with a circulation branch, and an inlet and an outlet of the circulation branch are both communicated with the exhaust pipeline; and a heat dissipation mechanism is installed in the main steam pipe valve room, and the heat dissipation mechanism is installed on the circulation branch so that heat exchange can be conducted between air in the main steam pipe valve room and liquid nitrogen in the circulation branch. Volatile low-temperature nitrogen is introduced into the heat dissipation mechanism for heat exchange, reutilization of liquid nitrogen cooling capacity is achieved, cooling capacity resource waste caused by direct emission of the low-temperature nitrogen is reduced, and therefore the system resource utilization rate is increased; and the temperature between the main steam pipe valves is actively reduced through the cooling capacity of the volatilized low-temperature nitrogen, external energy consumption input can be reduced, and the overall energy efficiency of the system is improved.

A low-temperature adsorption-regeneration purification system for flue gas. The system comprises a spray cooling tower (1), an adsorption tower (2), a first heat exchanger (4), a regeneration tower (3) and a cold energy recovery assembly (6), wherein the spray cooling tower (1) is configured to cool flue gas introduced thereinto to low-temperature flue gas at sub-zero temperatures; the adsorption tower (2) is configured to adsorb and purify into clean flue gas the low-temperature flue gas discharged from the spray cooling tower; the first heat exchanger (4) is configured to exchange heat between the clean flue gas discharged through a flue gas outlet (22) and a first medium introduced through a first hot-side inlet (41) in the first heat exchanger (4); a regeneration section of the regeneration tower (3) is configured to heat an adsorbent to regenerate the adsorbent, while a cooling section (33) is configured to cool the regenerated adsorbent; and the cold energy recovery assembly (6) is configured to recover cold energy from the clean flue gas discharged from the adsorption tower (2) and / or cold energy from clean flue gas discharged through a first cold-side outlet (44). The low-temperature adsorption-regeneration purification system for flue gas can recover and utilize cold energy in flue gas multiple times, thereby reducing the consumption of other energy sources.

The invention discloses a helium purification method capable of preventing catalyst poisoning, which comprises the following steps: cooling raw material gas until miscellaneous gas with liquefaction temperature equal to or higher than that of nitrogen in the raw material gas is liquefied, carrying out gas-liquid separation to obtain intermediate product gas containing neon gas, hydrogen gas and helium gas, and adsorbing the neon gas in the intermediate product gas at low temperature to obtain mixed gas, the miscellaneous gas contains nitrogen; hydrogen in the mixed gas is removed through a catalyst, so that a helium product is obtained, and at least one first type of gas capable of poisoning the catalyst exists in the offensive gas. The explosion risk can be eliminated, external gas is not needed, the process is simplified, and safety is improved. The temperature optimization catalytic reaction can improve the hydrogen removal rate and prolong the service life of the catalyst, the extraction of byproducts of high-purity hydrogen and neon can increase the resource utilization rate, and the limitation of the traditional process is broken through.

The invention provides a hydrogen low-temperature precooling device and method which are suitable for deep precooling treatment before hydrogen liquefaction in a liquid hydrogen preparation process. The device comprises a raw material hydrogen cooling and converting system, a mixed refrigerant refrigerating system and a nitrogen circulating refrigerating system, multi-stage heat exchange is achieved through a main heat exchanger and a subcooler, and efficient cooling capacity distribution is provided by adopting a multi-stage refrigerant separation and throttling path. After being cooled, the hydrogen sequentially passes through the low-temperature adsorber and the ortho-parahydrogen converter, so that precooled hydrogen of which the temperature and the molecular structure both meet the liquefaction requirements is obtained. The device supports structure optimization and module simplification, can adopt externally supplied liquid nitrogen as a cold source, and adapts to different pre-cooling scenes. According to the method, through a refrigerant multi-section throttling and reheating recovery mechanism and a nitrogen double-channel cooling mechanism, cooling capacity output and energy efficiency utilization are both considered, and the method has the advantages of being safe in operation, compact in structure, accurate in temperature control and the like.

The invention discloses a lignin-rich biomass derived carbon material, a preparation method thereof and a hydrogen isotope separation method, and belongs to the technical field of porous materials. The ratio of ultramicropores of the carbon material is larger than or equal to 70%, the porosity is 0.35-0.45, the surface characteristic is that the sp3 / sp2 carbon hybridization ratio is 0.4-0.8, and the ultramicropores are formed by interweaving cellulose derived carbon layers and lignin derived fragments. The method is obtained through a synergistic regulation strategy of pre-oxidation-pyrolysis of biomass rich in lignin content. The carbon material realizes the selective enrichment of D2, the adsorption capacity reaches 4.76 mmol g <-1 >, in a 77K dynamic penetration experiment, the penetration time of D2 is delayed by 30% compared with that of H2, and the dynamic selectivity reaches 1.4. The carbon material is stable in performance after being pickled and has no obvious attenuation after being recycled, and a low-cost and large-scale solution is provided for hydrogen isotope separation. In addition, the carbon material is suitable for deuterium fuel purification, isotopic tracing and low-temperature adsorption separation processes in the nuclear energy field, and has the characteristics of cheap and easily available raw materials, simple process, high separation efficiency and the like.

The present invention relates to the technical field of helium extraction, and particularly to a method for extracting high-purity helium based on cryo-adsorption. The content includes: in a low-temperature environment, using cryo-adsorption materials, through a dynamic adsorption scheduling optimization algorithm, performing adsorption treatment on the mixed gas to obtain unadsorbed helium and the cryo-adsorption material after adsorbing impurity gases; performing desorption treatment on the cryo-adsorption material after adsorbing impurity gases to obtain desorbed and enriched helium; performing cryogenic fractionation treatment on the desorbed and enriched helium and the unadsorbed helium to obtain high-purity helium. It solves the technical problems of low helium extraction efficiency, low purity, and low recovery rate in traditional helium extraction methods.

The utility model relates to an adsorption type cold trap which comprises a shell, a cooling inner container and a first net plate, an air inlet is formed in the lower portion of the shell, an air outlet is formed in the upper portion of the shell, the cooling inner container is located in the shell and fixedly connected with the shell, a cooling cavity is formed in the cooling inner container and communicated with a liquid inlet and a liquid outlet respectively, and the first net plate is arranged in the cooling inner container. The first screen plate is located in the shell and fixed to the shell in position, and the first screen plate is located above the cooling inner container. Waste gas is subjected to low-temperature adsorption and adsorption particle adsorption twice, so that the dust content in the waste gas is greatly reduced, dust deposited on the inner wall of a pipeline is reduced, and the pipeline between a dry pump and waste gas treatment equipment is prevented from being blocked; the detection medicament in the net cylinder is observed through the transparent lens to judge whether the adsorption particles need to be replaced, and the operation is simple and convenient; and the mounting cylinder sleeves the outer side of the cooling liner, and the mounting cylinder can be integrally taken out of the shell to be cleaned, so that the cleaning is more convenient, and meanwhile, the cleaning effect is improved.

The invention relates to the technical field of ultralow-temperature hydrogen purification, in particular to an ultralow-temperature hydrogen purification system. Which comprises a deoxidation barrel, two low-temperature adsorption towers, a multi-stage heat exchange structure, a raw material gas inlet, a control system and a temperature control module, and is characterized in that the raw material gas inlet is sequentially connected with the deoxidation barrel and the two low-temperature adsorption towers which are arranged in parallel through pipelines, and the deoxidation barrel is filled with a metal filler which is used for carrying out a chemical reaction with oxygen so as to realize primary removal; the two low-temperature adsorption towers are in a double-layer cavity structure, and a liquid nitrogen inlet and a liquid nitrogen outlet are formed in outer-layer cavities of the two low-temperature adsorption towers. By means of comprehensive innovation on the system structure and the operation method, the system has the remarkable beneficial effects that the purification mode that the deoxidizing barrel and the double-tower parallel low-temperature adsorption structure are combined is adopted; impurities such as oxygen, nitrogen, carbon monoxide and methane in the hydrogen can be efficiently removed, and the purity of the hydrogen can stably reach 99.9999999% or above.

The utility model provides a kind of petrochemical cracking device chlorine-containing waste gas low-temperature adsorption recovery device, it is related to chlorine-containing waste gas recovery technical field, including absorption cylinder and washing tank, the bottom of absorption cylinder is provided with base, and the middle part of base is provided with liquid accumulation drain pipe, the lower end of liquid accumulation drain pipe is led into washing tank, and the middle part in washing tank is provided with filter screen frame, washing tank is equipped with lye, and the left part of washing tank is provided with waste gas inlet pipe, the upper portion of waste gas inlet pipe is connected with return pipe, return pipe is installed with suction pump in the upper portion, and the upper end of return pipe is connected on the left side surface upper portion of absorption cylinder, dehumidifier is installed in the lower part in absorption cylinder.The utility model first carries out lye washing to chlorine-containing waste gas, then in turn carries out dehumidification, drying, adsorption and purification treatment, and the gas after treatment can be recycled, which helps to improve the absorption rate of chlorine gas, so that the gas after treatment is cleaner and more complete, and the discharge is safe, reliable and environmentally friendly.

The invention relates to the technical field of helium production, and provides a wide-abundance-range helium-3 purification adsorption device and portable adsorption equipment. The low-temperature adsorption unit comprises a vacuum cover; a refrigerator; the plurality of adsorption devices are arranged in the vacuum cover, and each adsorption device is filled with different types of adsorbents and is used for selectively adsorbing helium-3 raw material gases in different preset abundance ranges; the air inlet end of each adsorption device is connected to the air supply pipeline through an air inlet pipeline, and each air inlet pipeline is provided with an air inlet valve; the gas analyzer is arranged on the gas supply pipeline and is used for detecting the abundance of helium-3 in the detection raw material gas so as to selectively open the gas inlet valves of the helium-3 adsorption devices corresponding to different abundance ranges according to a detection result; the corresponding adsorption devices are matched according to different abundance values of helium-3 in the mixed raw material gas, effective recovery and purification of the helium-3 raw material gas with a wide abundance range are achieved, the application range of the raw material gas is widened, loss of helium-3 resources is effectively reduced, and the universality of the device is remarkably improved.

The present application relates to the technical field of flue gas purification and discloses a flue gas low-temperature adsorption regeneration purification system, which comprises a spray cooling tower, an adsorption tower, a first heat exchanger, a regeneration tower and a cold energy recovery assembly. The spray cooling tower is used for cooling flue gas into low-temperature flue gas with subzero temperature. The adsorption tower is used for adsorbing and purifying the low-temperature flue gas discharged from the spray cooling tower into clean flue gas. The first heat exchanger is used for exchanging heat between the clean flue gas discharged from a flue outlet and a first medium introduced into a first hot side inlet. The regeneration section of the regeneration tower is used for heating adsorbents to regenerate the adsorbents. The cooling section is used for cooling the regenerated adsorbents. The cold energy recovery assembly is used for recovering cold energy in the clean flue gas discharged from the adsorption tower and / or cold energy in the clean flue gas discharged from a first cold side outlet. The flue gas low-temperature adsorption regeneration purification system can recover and utilize the cold energy in the flue gas multiple times, thereby reducing the consumption of other energy.

An efficient low-temperature adsorbent vacuum breaking device comprises an outer shell and an inner container arranged in the outer shell, a vacuum heat insulation gap is reserved between the inner container and the outer shell, a low-temperature adsorbent chamber is inserted in the inner container, one end of the low-temperature adsorbent chamber is arranged in the inner container, and the other end of the low-temperature adsorbent chamber is arranged in the inner container. The other end of the low-temperature adsorbent chamber is arranged in the vacuum heat insulation gap, an opening is formed in the end, at the vacuum heat insulation gap, of the low-temperature adsorbent chamber, the opening is sealed through a sealing cover, an adsorption opening is formed in the sealing cover and sealed through a thin aluminum plate, and an air inlet pipe is further inserted into the sealing cover. And a low-temperature adsorbent is filled in the low-temperature adsorbent chamber. The low-temperature adsorbent can be put into the interlayer in advance, the tank body is prevented from being subjected to trepanning operation again in the later period, meanwhile, the activation degree of the low-temperature adsorbent material is guaranteed to the maximum degree, and the low-temperature adsorbent material can be activated again and replaced conveniently in the later period.

The invention discloses an energy-saving air compression treatment device for dialyzer drying and a treatment process of the energy-saving air compression treatment device. The device comprises an air compressor, a water cooler connected with the air compressor, a rotary drum dryer connected with the air compressor, a peristaltic pump connected with the rotary drum dryer and a secondary filter connected with the rotary drum dryer. A rotary drum in the rotary drum dryer comprises a low-temperature adsorption unit, a high-temperature desorption unit and a cooling regeneration unit, and the rotary drum is connected with a motor to control the rotary drum to keep rotating. The novel treatment device has the beneficial effects that the novel treatment device is used, pressure swing adsorption is replaced by temperature swing adsorption, heat generated in the compression process of compressed air is used as a heat source, and zero loss of the compressed air can be realized; similarly, the heat source is used for heating the supplied air, so that the air can be preheated to 60-70 DEG C, and a large amount of heating electricity is saved; and circulating water is used for replacing a freezing dryer in the cooling process of compressed air, so that power consumption is effectively reduced.

Systems and methods for improving the performance of dilution refrigeration systems are described. Filters and traps employed in the helium circuit of a dilution refrigerator may be modified to improve performance. Some traps may be designed to harness cryocondensation as opposed to cryoadsorption. A cryocondensation trap employs a cryocondensation surface having a high thermal conductivity and a high specific heat with a binding energy that preferably matches at least one contaminant but does not match helium. Multiple traps may be coupled in series in the helium circuit, with each trap designed to trap a specific contaminant or set of contaminants. Both cryocondensation and cryoadsorption may be exploited among multiple traps.

The present application relates to the technical field of flue gas treatment and discloses a flue gas low-temperature adsorption system, which comprises a spray tower and an adsorption tower connected with each other, the spray tower has multiple-stage spray cavities, and spray assemblies are correspondingly arranged in the spray cavities, the spray assemblies are used for spraying spray liquid to cool and lower the temperature of flue gas in the spray cavities, and the flue gas is conveyed to the adsorption tower after being lowered to below room temperature in the spray tower, thereby avoiding the problem that water in the flue gas condenses into ice and causes the blockage of a conveying pipeline. The adsorption tower has an adsorption cavity and a heat exchange cavity, the adsorption cavity has an adsorbent therein, and the heat exchange cavity is used for continuously feeding cooling liquid, so as to simultaneously cool flue gas and adsorb the adsorbent, the adsorption and purification of the flue gas are performed in a subzero temperature zone, the adsorption capacity of the adsorbent is increased, the loading amount of the adsorbent in the adsorption tower is reduced, and the volume of the adsorption tower is reduced. Moreover, the cooling liquid after heat exchange is supplied to any stage of the spray assemblies as the spray liquid sprayed by the spray assemblies, the staged utilization of cold energy is realized, and the energy consumption is reduced.

The application provides a heat pipe structure based on solar heat chemical adsorption refrigeration and a permafrost protection method, and the heat pipe structure comprises a heat pipe, the heat pipe is in a U-shaped hollow structure sealed internally, and a refrigeration working medium is arranged in the heat pipe; the heat pipe comprises a high-temperature adsorption bed, a condensation section, an evaporation section and a low-temperature adsorption bed which are sequentially connected; the high-temperature adsorption bed is internally filled with a high-temperature adsorbent and is used for desorbing the refrigeration working medium under the heating action of solar energy to obtain high-temperature refrigeration working medium; the condensation section is vertically arranged and is used for condensing the high-temperature refrigeration working medium to obtain condensed refrigeration working medium and enabling the condensed refrigeration working medium to enter the evaporation section under the action of gravity; the evaporation section is horizontally arranged and is used for evaporating the condensed refrigeration working medium under the heating action of permafrost temperature and the adsorption action of the low-temperature adsorbent to obtain evaporated refrigeration working medium; and the low-temperature adsorption bed is internally filled with a low-temperature adsorbent and is used for adsorbing the evaporated refrigeration working medium. The scheme improves the permafrost temperature-lowering effect of the heat pipe and the thermal stability of the heat pipe.

The application discloses a raw material gas condensing separation device with cold energy recovery and a use method thereof, which comprises a shell, wherein the shell is a barrel-shaped structure with an arc-shaped bottom surface, a low-temperature liquid inlet and outlet are arranged at the center of the bottom of the shell, a gas discharge port is arranged at the center of the upper cover of the top of the shell, the upper cover of the shell is further provided with a low-temperature gas inlet, a low-pressure adjusting valve, a low-temperature gas outlet, a raw material gas inlet, a normal-temperature ultra-pure gas outlet, a low-temperature ultra-pure gas inlet, a low-temperature pure gas outlet, a high-pressure adjusting valve, and the device is more compact in structure, higher in heat transfer efficiency and safer in operation, the method is simple and applicable, and the application range is wider; since the adsorber is separated, the adsorber equipment is smaller and more compact, the consumption of regeneration gas and liquid nitrogen is reduced, and the product yield is improved; the gas phase recovery after two-stage throttling improves the product yield; the cold energy of the ultra-pure gas and the cold energy of the low-temperature liquid evaporated during subsequent low-temperature adsorption are fully recovered, and the energy consumption is saved.

The present application belongs to the technical field of vehicle control, and discloses a vehicle control method, device, equipment and storage medium. When a pre-start signal is detected and the vehicle meets a cold start determination condition, a first valve is opened, a second valve is closed, and a pre-heating device is controlled to start to pre-heat a catalyst. When the pre-heating is completed, the first valve and the pre-heating device are closed, the second valve is opened, and the engine of the vehicle is controlled to cold start. During the pre-heating stage, the low-temperature adsorption unit is prevented from being heated simultaneously by adjusting the valves, so that the catalyst has good catalytic effect after the pre-heating is completed, and the low-temperature adsorption unit still has pollutant adsorption effect, thereby ensuring that the pollutant emission amount is greatly reduced even if the engine cold starts.

The application discloses a kind of cryogenic adsorption devices and its adsorption regeneration method, it is characterized in that, including cover 1, shell 2, upper envelope 3, low temperature adsorber 4, space I between shell and inner part, special channel II, special channel II's outer cylinder body 5, lower envelope 6, raw gas inlet pipeline 7, support plate 8, outer regeneration gas inlet pipeline 9, ultra-pure product outlet pipeline 10, specific outer regeneration channel. By cryogenic adsorption device can produce 6N level and above ultra-pure product;Device structure is simple, compact, save outer regeneration gas and precooling low temperature liquid consumption;Greatly improve the heat utilization rate of outer regeneration gas, reduce the use amount of ultra-pure product during regeneration, improve the yield of ultra-pure product, especially suitable in large-scale purification device;Simultaneously using different temperature low temperature gas gradually precooling low temperature adsorber, effectively reduce the stress generated by alternating load, control stress in allowable range, ensure the safe operation of equipment.

The invention particularly relates to a solid waste incineration flue gas purification device which comprises a heat exchanger (1), a quench tower (2), a dust remover (3), a cooler (4), a steam-water separator (5) and an adsorption device which are sequentially communicated through pipelines. After high-temperature solid waste incineration flue gas is cooled by the heat exchanger (1), rapidly cooled by the quench tower (2), filtered and dedusted by the deduster (3), cooled by the cooler (4) and subjected to gas-liquid separation by the steam-water separator (5), low-temperature solid waste incineration flue gas and flue gas cooling water are obtained; and the low-temperature solid waste incineration flue gas enters the adsorption device to be adsorbed and purified and then is discharged. The solid waste incineration flue gas purification device integrates cooling and low-temperature adsorption functions, can realize integrated removal of various pollutants, and has the advantages of high pollutant removal efficiency, complete removal types, energy conservation, environmental protection, low consumption, low secondary pollution, low investment and small occupied area.

The utility model belongs to the technical field of helium extraction, and particularly relates to a BOG (Boil Off Gas) helium extraction device which comprises a low-temperature crude extraction system, a low-temperature rectification system, a circulating oxygenation, hydrogen removal and methane removal system, a low-temperature condensation system, a low-temperature adsorption system and a vacuumizing system, a liquid nitrogen storage tank is arranged outside the two low-temperature adsorbers, liquid nitrogen is contained in the liquid nitrogen storage tank, and the liquid nitrogen storage tank is connected with the vacuumizing system. According to the utility model, the BOG gas is taken as a raw material, helium in the BOG gas is extracted through low-temperature crude extraction, cyclic oxygenation, hydrogen removal and methane removal, low-temperature condensation and low-temperature adsorption, the purity of the obtained high-purity helium reaches 99.999%, the pressure in the liquid nitrogen storage tank is less than 1KPa under the action of the vacuum-pumping system, the vaporization rate of liquid nitrogen is higher, more heat is absorbed, and the purpose of high-purity helium extraction is achieved. The adsorption efficiency of the second adsorber is improved, and the consumption of liquid nitrogen is reduced.

The application discloses a low-temperature dehumidification drying equipment driven by a heat pump and a heat chemical energy storage and a control method thereof. The core of the low-temperature dehumidification drying equipment driven by the heat pump and the heat chemical energy storage is a deep cooperative coupling system composed of a cascade high-temperature heat pump, an integrated double-function reactor and a drying chamber. The reactor is internally provided with a heat chemical adsorption composite heat storage material and a stirring assembly. The energy storage regeneration and the drying energy release double modes are completely isolated and switched through a gas path switching unit, so that the reactor is compatible with the high-temperature dehydration regeneration and the low-temperature adsorption dehumidification and temperature rising double working conditions in the same cavity, and becomes a core unit for synchronously completing air dehumidification and temperature rising in a closed drying cycle. The application creatively utilizes the high-temperature heat pump coupling heat chemical heat storage technology. Compared with other heat storage technologies, the technology can realize efficient energy storage through peak shifting, significantly reduces energy consumption, greatly improves energy utilization efficiency, saves operation cost by more than 65%, increases the drying rate by more than 40%, and effectively overcomes the defects of the existing drying equipment, such as high energy consumption, asynchronous dehumidification and temperature rising, no energy storage function, high operation cost and insufficient drying quality stability.

The application discloses an adsorbent regenerator and a low-temperature adsorption regeneration system. The adsorbent regenerator comprises a tower body, a material falling assembly and a baffle assembly. The inner cavity of the tower body comprises a distribution section and a heating section below the distribution section. The distribution section is located at the top of the inner cavity of the tower body. The heating section is used for heating the adsorbent to desorb and regenerate the adsorbent. The material falling assembly comprises a plurality of material falling pipes. The material falling assembly is arranged in the heating section. The adsorbent entering the heating section from the distribution section falls through the material falling pipes. The baffle assembly is arranged in the heating section and comprises a plurality of baffles. The baffles are arranged obliquely relative to the axial direction of the material falling pipes. The plurality of baffles are arranged in the heating section at intervals. The baffles are used for guiding the flow of the heating medium in the heating section to heat the adsorbent in the material falling pipes in the heating section to desorb and regenerate the adsorbent. The adsorbent regenerator disclosed by the application can reduce the flow resistance of the heat exchange medium and reduce the flow dead zone area.