349 results about "Packed bed" patented technology

The invention discloses a continuous synthesis and purification method of hexafluoropropylene oxide, which comprises the following steps: introducing hexafluoropropylene, oxygen and a fluorine-containing solvent into a supergravity reactor to carry out oxidation reaction at the reaction temperature of 100-200 DEG C under the reaction pressure of 1.0-2.5 Mpa for 10-120 seconds, and after the reaction is finished, overflowing and leading out reaction liquid to obtain the hexafluoropropylene oxide. And purifying to obtain the hexafluoropropylene oxide. According to the method, the problems of mass transfer and heat transfer can be effectively solved by using the supergravity reactor, the reaction selectivity is remarkably improved, meanwhile, the productivity is effectively improved, and the supergravity reactor is combined with extractive distillation treatment, so that the conversion rate of the hexafluoropropylene reaches 79% or above, the selectivity of the hexafluoropropylene oxide is 85% or above, and the purity of the hexafluoropropylene oxide after extractive distillation reaches 99%. The invention further discloses a device used in the continuous synthesis and purification method, and cyclic utilization of hexafluoropropylene and the fluorine-containing solvent can be achieved.

The invention provides a coal mine ventilation air methane synergistic enrichment and fluidized heat storage combustion system and method. The system comprises an air shaft diffusion tower and a ventilation air methane collecting device, the method comprises the following steps: collection and compression of ventilation air methane, cooling and boosting adsorption of an adsorption tower, pressure drop equalization of the adsorption tower, temperature rise, pressure reduction and desorption of the adsorption tower, pressure rise equalization of the adsorption tower, periodic cycle work of the adsorption tower, preheating of a packed bed of a heat storage furnace, fluidized heat storage oxidation of coal gangue and gas, and waste heat recovery and utilization. According to the invention, safe and efficient enrichment of ventilation air methane can be realized, and fluidized heat storage oxidation coupling utilization of concentrated gas and coal gangue particles can be realized; the oxidation waste heat is used as a generator heat source; the carbon reduction scheme of large-scale separation and concentration-synergistic oxidation-efficient utilization of the oversize coal mine ventilation air methane is formed, the coal industry is assisted to achieve the goal of'two wastes' and sustainable development, and large-flow, low-cost, safe and efficient treatment and utilization of the ventilation air methane discharged by an oversize low-gas mine can be achieved.

According to the monolithic catalyst packed bed process system and the corresponding method for fluidized carbonate reduction based on the monolithic catalyst, by adopting the monolithic catalyst, full contact of a gas phase, a solid phase and a solid phase is guaranteed, the efficiency of carbonate reduction reaction is improved, and the utilization rate of the catalyst is increased. Meanwhile, the problem of separation of a subsequently generated oxide solid product and a catalyst solid is avoided, and continuous operation of the system is realized. According to the present invention, the heating decomposition reaction of the metal carbonate and the hydrogenation reduction reaction of the in-situ carbon dioxide are coupled, and the monolithic catalyst is adopted to perform catalysis so as to obtain the high-value metal oxide and the synthesis gas or methanol product, and compared with the prior art, the process reaction temperature is substantially reduced so as to easily promote energy saving and emission reduction.

The invention relates to a flowing medium packed bed energy storage system which comprises a storage tank for storing flowing media, the storage tank is connected with a flowing medium loop through a stop valve, the flowing medium loop comprises a flowing medium pump, a heater, a heat accumulator module and a heat exchanger which are sequentially connected through a pipeline, and the flowing medium pump provides power for flowing medium circulation; the heat accumulator module is composed of a plurality of heat accumulator units, and each heat accumulator unit is filled with a solid material. In the heat storage mode, the heater heats the flowing medium from the low-temperature state to the high-temperature state, and then the solid materials filled in the heat storage body units are heated through the heat storage body units. In the heat release mode, the flowing medium is heated from a low-temperature state to a high-temperature state after flowing through the high-temperature solid material, and then heat is released to an external system through the heat exchanger. Efficient heat exchange between a flowing medium and a solid material is achieved through the modular solid filling design, so that the heat storage efficiency of the whole system is improved, and the adaptability and flexibility of the system are enhanced.

The disclosure provides an extracorporeal devices, systems and methods for removing a pathogen or a toxin from a biological fluid of a subject comprising contacting a biological fluid from the subject with a loosely packed bed of adsorption media, such as a fluidized bed, wherein the adsorption media comprises heparin, to remove the pathogen or the toxin to form a treated biological fluid; and infusing the treated fluid into the subject.

Methods and devices for analyzing non-volatile organics in exhaled breath and other aerosols using various diagnostic tools that enable rapid, low-cost point of care assays for several diseases including respiratory tract diseases such as COVID-19. The disclosed methods and systems selectively capture non-volatile organics in exhaled breath and other aerosols in a packed bed column. The non-volatile organics are eluted and samples are analysis using diagnostic devices including MALDI-TOFMS. The disclosed systems and methods provide for a diagnostic test result in less than about 20 minutes and provides for autonomous operation with minimal human intervention.

Disclosed herein is a rotating packed bed, RPB, arrangement configured to provide mass transfer between a liquid sorbent and a gas, the RPB arrangement comprising: an RPB configured to provide a substantial cross-flow between a liquid sorbent and a gas; and a spray arranged to spray the liquid sorbent onto the RPB; wherein the RPB and spray are both arranged at different longitudinal positions on a gas flow path through the RPB arrangement.

A process for operating an oxidizable combustion gas cleaning unit in a metallurgical plant, including the steps of: (a) passing an oxidizable combustion gas from a metallurgical reactor, in particular a blast furnace gas from a blast furnace, in a packed bed scrubber arrangement through a packed bed in countercurrent with a washing water or in a spray scrubber arrangement to remove cyanide compounds, in particular hydrogen cyanide, and to increase the removal of chloride compounds, in particular hydrogen chloride, from the combustion gas by solubilizing the cyanide and chloride compounds in the washing water, (b) collecting the washing water containing solubilized cyanide and chloride compounds at a bottom end of the packed bed or spray scrubber arrangement, and (c) collecting a cleaned oxidizable combustion gas at a top of the packed bed or spray scrubber arrangement, wherein a base is added to the washing water before step (a).

The invention discloses an immersed rotating packed bed combined coil device and method for reactive extraction, and the combined coil device comprises a shell, a liquid inlet, a sealing assembly, a liquid premixing pipe, a packing assembly, a heat exchange jacket, a liquid emptying port, a liquid outlet and a spiral coil assembly; according to the device, a reactor cavity is completely filled with liquid, so that an immersed reaction environment is formed; and a strong shearing effect is generated by utilizing the supergravity silk screen filler, so that rapid heterogeneous mixing is realized, and the reaction selectivity is improved. Meanwhile, a supergravity reaction area and a coil flow area are combined into a whole, the spiral coil can repeatedly change the flow direction and form vortex to realize continuous flow of the material and maintain the dispersion state of liquid drops, and the retention time of the material is flexibly regulated and controlled by adjusting the length of the coil, so that the reaction conversion rate is remarkably improved.

The present disclosure provides a multipurpose multi-source heat-storing compressed air energy storage system and a method thereof, including a packed bed heat-storing device, a heat-storing circuit, a heat-releasing circuit, a gas-storing circuit, a photothermal circuit, a heating-supplying circuit and a cooling-supplying circuit, wherein the heat-storing circuit and the heat-releasing circuit are connected to the packed bed heat-storing device, respectively, and the heat-storing heat exchanger of the heat-storing circuit and the heat-releasing heat exchanger of the heat-releasing circuit are connected with the gas-storing circuit, respectively, the photothermal circuit is connected with the heat-storing circuit, the heating-supplying circuit is connected with the heat-releasing circuit and the photothermal circuit, the cooling-supplying circuit is connected to the packed bed heat-storing device and the photothermal circuit, the photothermal circuit heats the heat-storing circuit and the heat-releasing circuit.

The present invention provides a composite gasification device based on a filtration combustion mode, belonging to the technical field of solid fuel gasification for producing synthesis gas. It solves the problems of low carbon conversion efficiency, high tar content, and low synthesis gas yield. It includes a gasifying agent inlet, a preheating section, a reaction section, a reforming section, a synthesis gas outlet, and a discharging section. The gasifying agent inlet is communicated with the preheating section. Both ends of the reaction section are respectively communicated with the preheating section and the reforming section. The synthesis gas outlet is communicated with the reforming section. The discharging section is communicated with the reaction section. Both the preheating section and the reforming section are composed of various forms of inert porous medium fillers. The internal of the porous medium packed bed has complex pore channels, which is beneficial to mass transfer and heat transfer. The porous medium can be composed of inert particles such as ceramsite or glass microspheres and similar substances, wire meshes, and foam ceramics, etc. It is mainly used for the efficient gasification of various solid fuels.

The invention discloses a compressed carbon dioxide energy storage system based on phase change heat storage and regenerative coupling and a deep peak regulation method, relates to the technical field of energy storage, and constructs a three-stage cascade heating chain. The compressed carbon dioxide energy storage system comprises a compressor unit, a high-pressure tank, a low-pressure tank, a regeneration heater, a PCM packed bed and a turbine generator unit. An outlet of the low-pressure tank is connected with an inlet of a working medium channel in the regeneration heater through the compressor unit and the high-pressure tank, an outlet of the working medium channel in the regeneration heater is connected with an inlet of a working medium channel in the PCM packed bed, and an outlet of the working medium channel in the PCM packed bed is connected with an inlet of a heat source channel in the regeneration heater through the turbine generator set. An outlet of a heat source channel in the regeneration heater is connected with an inlet of the low-pressure tank through the first air cooler. According to the method, the output power, the energy storage density and the peak regulation response speed of the system are remarkably improved, and an efficient deep peak regulation solution is provided for renewable energy source grid connection.

The application discloses a method for continuously preparing MOF materials in water phase by using a supergravity technology, and comprises the following steps: S1, weighing metal salt and dissolving the metal salt in a deionized water solution at normal temperature, and recording the solution as reaction liquid A; S2, weighing organic ligand and dissolving the organic ligand in an alkali solution at normal temperature, and recording the solution as reaction liquid B; S3, starting a supergravity reactor, and simultaneously introducing the reaction liquid A and the reaction liquid B into the supergravity reactor by a peristaltic pump to perform a precipitation crystallization reaction, so as to prepare a MOF material suspension, wherein the supergravity reactor is selected from an external circulation rotating packed bed; and S4, performing centrifugation, washing, activation and drying on the suspension, so as to obtain MOFs. The method is green and environment-friendly, the prepared product has high crystallinity, large specific surface area, uniform particle distribution, regular morphology, and the average particle size is 20 nm-6 microns, and the size is controllable.

The invention provides a preparation method of a Fischer-Tropsch synthesis iron-based catalyst, Fe-Cu-K-M-Q-SiO2 is used as a basic formula, M element is selected from at least one of vanadium, tin, manganese, aluminum, cobalt, nickel, ruthenium, zinc and chromium, Q element is selected from at least one of cerium, zirconium, lanthanum, magnesium, calcium, barium, neodymium, strontium and boron, and the balance is Fe. According to the Fischer-Tropsch synthesis precipitation iron-based catalyst and the preparation method thereof, a coprecipitation reaction of a catalyst precursor is carried out by combining a supergravity rotating packed bed reactor, and then filtering, washing, drying and roasting are carried out, so that the finally prepared Fischer-Tropsch synthesis precipitation iron-based catalyst has high reaction activity, selectivity and stability and also has high wear resistance.

The utility model relates to the technical field of wastewater treatment, in particular to a sulfur autotrophic denitrification filter tank device driven by a suspended packed bed. The sulfur autotrophic denitrification filter tank device comprises a regulating tank, a sulfur autotrophic denitrification biological filter tank and a sedimentation tank which are communicated in sequence; the adjusting tank is used for homogenizing the wastewater; a suspended sulfur autotrophic denitrification biological filler is arranged in the sulfur autotrophic denitrification biological filter, and the sulfur autotrophic denitrification biological filter is used for performing a sulfur autotrophic denitrification reaction to remove nitrate nitrogen in the wastewater; the sulfur autotrophic denitrification biofilter is also connected with a sulfur autotrophic denitrification dosing tank; the settling pond is used for standing and settling the wastewater; a water outlet for discharging treated wastewater is formed in the top of the sedimentation tank. According to the utility model, the suspended biological filler is combined with the sulfur autotrophic denitrification reagent, and the suspended sulfur autotrophic denitrification biological filler is arranged in the sulfur autotrophic denitrification biological filter, so that the mass transfer efficiency can be improved, and the deep removal of nitrate nitrogen in wastewater is realized.

The invention relates to the technical field of liquid air energy storage and cold energy storage, in particular to a liquid air energy storage power generation device and method based on packed bed cascade cold accumulation, and the liquid air energy storage power generation device comprises a liquid air supply unit, a cold energy cascade storage and exchange unit and an air expansion power generation unit. Liquid air is pressurized by a low-temperature pump and then enters the cold energy cascade storage and exchange unit, graded vaporization is carried out to release cold energy, the vaporized air enters the air expansion power generation unit to carry out expansion power generation, the air with residual pressure after power generation is completed serves as heat exchange fluid to enter the cold energy cascade storage and exchange unit, and low-temperature cold energy is recovered in a graded mode and stored in a cascade mode. Through graded heat exchange and cascade cold storage, the heat exchange temperature difference is reduced, the temperature gradient of the packed bed is reduced, then the cold loss in the heat exchange and cold storage process is reduced, and the system efficiency is improved. In addition, the residual pressure generated after air power generation is used as driving, an additional circulating fan is not needed, and the investment cost can be reduced.

The invention relates to a single-tank thermocline energy storage device which comprises a solid packed bed, the solid packed bed comprises at least three axially-distributed flow collecting and distributing devices and metal phase change materials located among the flow collecting and distributing devices, the metal phase change materials are graphite wrapped metal, and the metal is aluminum or aluminum alloy; in the heat storage process, fused salt flows in from the top, heat is transferred to the metal phase change material downwards layer by layer, and then the fused salt is led out from the flow collecting and distributing device; in the heat release process, the fused salt flows in from the bottom, heat is transferred to the fused salt from the upward metal phase change material layer by layer, and then the fused salt is led out from the flow collecting and distributing device. According to the single-tank thermocline energy storage device, through the arrangement of the at least three flow collecting and distributing devices, the fused salt is led out downwards layer by layer in the heat storage process and led out upwards layer by layer in the heat release process, the time for stabilizing the temperature of the fused salt at an outlet can be effectively prolonged, the thickness of a thermocline is controlled, and the efficiency and reliability of the single-tank thermocline energy storage device are improved.

Methods and devices for capturing and analyzing aerosolized particles in exhaled breath characteristic of a respiratory disease to enable rapid, low-cost point of care assays for several diseases including respiratory tract diseases such as COVID-19 are disclosed. The disclosed methods and systems selectively capture aerosolized particles using a packed bed column. The captured particles are then eluted using solvents and analyzed using analytical devices including MALDI-TOFMS.

The present application relates to a kind of dimethylamine piperidine continuous synthesis dimethylamine piperidine method of oxy group, by using reaction raw material mixed solution into continuous flow packed bed reaction zone, i.e.catalyst layer;Reaction temperature is 20-80 ℃, normal pressure, feed liquid is the mixture of dimethylamine piperidine, hydrogen peroxide and deionized water, oxidation is carried out on the catalyst layer of continuous flow packed bed adiabatic reactor to make dimethylamine piperidine into dimethylamine piperidine oxy group, realize the continuous preparation of dimethylamine piperidine oxy group;The obtained reaction liquid is quenched, then filtered to remove solid particle quenching agent, vacuum distillation to remove water and vacuum rectification treatment obtain high-purity dimethylamine piperidine oxy group;The process scheme overcomes the series of deficiencies in the previous preparation process, such as complicated steps, low product purity, low production capacity in unit production time, realizes the continuous preparation of high-purity dimethylamine piperidine oxy group, with the characteristics of efficient, safe, green manufacturing.

This invention relates to an air purification device designed to remove a wide range of volatile and semi-volatile organic compounds from contaminated air The system integrates a chemical scrubber with an electrochemical reactor that generates ferrate(VI) solution in situ. The reactor uses two iron electrodes immersed in a 14 molar sodium hydroxide solution, powered by a direct current converter operating at 24 volts. Upon activation, ferrate(VI) ions are formed, indicated by a purple coloration in the solution. The ferrate(VI) solution is immediately circulated through a packed- bed scrubber, where it contacts the polluted air. Organic compounds are absorbed into the liquid phase and oxidized by ferrate(VI), resulting in cleaner air. The system is equipped with drainage for spent solution and can be integrated into industrial, laboratory, or indoor ventilation setups.

The invention relates to the technical field of environmental protection equipment, in particular to an organic matter pollution treatment device for solid waste particles. The supporting pipe body is provided with an air inlet and an air outlet; the movable pipe body can be rotatably arranged in the supporting pipe body; an annular discharge chamber is formed between the movable pipe body and the supporting pipe body and is used for material circulation; the blades are located on the outer side of the movable pipe body. The blades can be driven to rotate; the first electrode is of a net-shaped structure. The electrode I wraps the outer wall of the supporting tube body; the electrode II is arranged in the movable tube body; the driving mechanism is in transmission connection with the movable pipe body and the blades and used for driving the movable pipe body and the blades to rotate. By adopting the static packed bed reactor, the problems that solid particles are not uniformly mixed, gas mass transfer is blocked and the treatment efficiency is low in an existing static packed bed reactor can be solved, and high-efficiency and uniform repair of pollutant particles with high water content and different particle sizes is realized.

The invention provides a semi-closed impinging stream-rotating packed bed device which comprises a shell, the liquid inlet pipe is used for inputting first liquid and second liquid; the two baffles are horizontally arranged in the shell, and the two nozzles are oppositely arranged, arranged in the centers of the two baffles respectively and communicated with the tail end of the liquid inlet pipe; the filler is arranged in the shell and is arranged on the periphery of the baffle; the rotary power source is used for driving the filler to rotate; and the liquid outlet pipe is arranged at the bottom of the shell. The device provided by the invention can weaken the impact stagnation point offset phenomenon caused by unequal liquid-liquid impact flow, ensures that the impacted liquid mixture still enters the inner edge of the rotating filler in the vertical direction, and on the other hand, the structure can enable the liquid material to flow through in an approximate plug flow form; and the phenomena of poor reaction selectivity and by-product increase caused by material back-mixing are inhibited.

The invention discloses a lignin nanoparticle liquid-phase dispersion or solid dispersion preparation method which comprises the following steps: 1) adding lignin into a good solvent, stirring and dissolving to form feed liquid A; or adding the lignin and the surfactant into a good solvent, stirring and dissolving to form feed liquid A; 2) adding a surfactant into a poor solvent, stirring and dissolving to form a feed liquid B; or a poor solvent is used as feed liquid B; 3) introducing the feed liquid A and the feed liquid B into a supergravity rotating packed bed through a peristaltic pump, and precipitating to obtain a lignin nanoparticle suspension; 4) centrifuging and washing the lignin nanoparticle suspension, and dispersing the lignin nanoparticle suspension in a liquid to obtain a lignin nanoparticle liquid-phase dispersion; or carrying out rotary evaporation on the lignin nanoparticle suspension to obtain the lignin nanoparticle liquid-phase dispersion. The prepared lignin nano-particle liquid-phase dispersion is good in stability and narrow in particle size distribution, and the particle size of the particles ranges from 5 nm to 50 nm.

The present invention relates to methods and devices for isolating one or more biomolecules of interest from a biological composition. Specifically, the invention relates to the separation of one or more target biomolecules from a biological composition by dynamic packed bed adsorption using a separation medium comprising porous rod-like particles attached to the target molecules and filtration using a filter having a pore size of at least 1.5 [mu] m.

This disclosure relates generally to processing of gas using packed bed column, and more particularly, a split bed packed column for processing gas. In current packed bed column configurations high pressure drop in packed column leads to increased energy consumption and puts a restriction on using high feed velocities, resulting in high cycle time. This results in increased requirement of adsorbent for processing of gas which thereby increases the operational expenses. The disclosed configuration includes multiple beds inside the same column differentiated by partitions instead of a single long bed inside the column. This configuration enables decreasing the pressure drop along the length, resulting in decreased energy consumption for the same cycle time, without compromising on other process key performance indicators. The disclosed configuration is used for gas separation via adsorption, thermal energy storage applications and so on.

An air purifier includes a hollow reactor extending in one direction, a discharge plasma generator including a first electrode disposed on an outer wall of the reactor and a second electrode which is disposed inside the reactor and generates discharge plasma in a predetermined discharge region, a plurality of dielectric particles disposed in a packed-bed of the reactor, and a liquid supply unit which supplies fine droplets into the inside of the reactor.

The utility model discloses a direct heat exchanger of a high-temperature particle steel slag packed bed, which is used for solving the problem of how to generate high-temperature supersaturated steam by utilizing heat energy contained in high-temperature steel slag. A main heat exchange channel and an auxiliary heat exchange channel are arranged in a shell of the heat exchanger, an inner cavity of the main heat exchange channel and an inner cavity of the auxiliary heat exchange channel are independent of each other, a roller screen is installed at a feeding port of the main heat exchange channel, and after high-temperature steel slag is screened through the roller screen, small-particle steel slag falls into the main heat exchange channel, and large-particle steel slag falls into the auxiliary heat exchange channel. And inner cavities of the main heat exchange channel and the auxiliary heat exchange channel are subjected to sectional heat exchange by a first-stage heat exchange wall pipe unit, a second-stage heat exchange wall pipe unit and a third-stage heat exchange wall pipe unit which are arranged from bottom to top. According to the technology, the heat exchange wall units in the tower body are optimally designed into the low-temperature section, the medium-temperature section and the high-temperature section from bottom to top, high-temperature steel slag is cooled in order, and high-quality supersaturated steam can be generated.

A caustic scrubber for removing SO2 from flue gas for use in a fuel cell assembly, the caustic scrubber comprising: a caustic scrubber tower comprising a packed bed of material; a flue gas inlet configured to direct flue gas into the caustic scrubber column; a scrubber solution pump configured to pump a scrubber solution comprising NaOH and H2O2 into the caustic scrubber column; and a waste scrubber solution outlet configured to discharge a waste scrubber solution, the waste scrubber solution comprising a sulfur salt formed by a reaction between the scrubber solution and SO2 in the flue gas.

A storage tank for heat storage of a particle packed bed is divided into an indirect heat exchange storage tank and a direct heat exchange storage tank and comprises a tank body, a flow distribution device, a baffle, a heat preservation device and an emergency discharge device. The tank body is used for storing solid particles and providing a supporting and storing space for the flow distribution device, the baffle, the heat preservation device and the emergency discharging device; the flow distribution device is used for uniformly distributing heat exchange fluid in the tank body, and the baffle is used for fixing a packed bed body in the tank body and preventing solid particles from flowing out of the tank body; the heat preservation device is used for maintaining the temperature of the packed bed body and providing heat tracing for the tank body when needed, and the emergency discharging device is used for discharging solid particles out of the tank body in an emergency. The distribution pipeline is adopted to distribute flow, so that fluid is uniformly mixed on the section of the storage tank, the problem of insufficient heat exchange of particles in heat storage and heat release processes is solved, and the heat storage efficiency of the packed bed system is improved.

The utility model provides heat exchange and heat storage equipment of multistage particle packed bed layers, which belongs to the technical field of phase change heat storage and heat exchange and comprises a vertically arranged heat storage tank, a fluid inlet channel is arranged at the upper end of the heat storage tank, a fluid outlet channel is arranged at the lower end of the heat storage tank, a plurality of heat storage bed layers are sequentially arranged in the heat storage tank from top to bottom, and the fluid inlet channel is communicated with the fluid outlet channel. Each heat storage bed layer is filled with PCM particles in order, the heat storage bed layers are divided into five layers in the heat storage tank, PCM particles with different phase change temperatures and different phase change enthalpy values are arranged according to a certain sequence, and the heat exchange and storage device of the multistage particle packed bed layers is formed by arranging the heat storage bed layers in the heat storage tank and arranging the PCM particles with different phase change temperatures and different phase change enthalpy values in the heat storage tank. The stepped arrangement has the advantage that the heat transfer temperature difference between the PCM and the heat transfer fluid can be basically kept constant, so that the heat exchange efficiency of the system can be integrally improved.