1467 results about "Fluidization" patented technology

The invention provides a silicon-carbon negative electrode material fluidized bed reaction system, and relates to the technical field of fluidized bed equipment. Comprising a raw material conveying system, a fluidized bed reactor, a high-temperature discharging system, a process gas inlet pipeline and a protection system. According to the scheme, the uniformity and safety of the fluidization reaction can be improved, and the working efficiency can be improved.

The invention belongs to the technical field of carbon sequestration, and particularly relates to a fluidization reaction device and method for efficiently mineralizing carbon dioxide by solid waste, and the method comprises the following steps: pretreating the solid waste to obtain solid waste powder; the method comprises the following steps: atomizing an alkaline solvent into water mist, inputting CO2 gas and the water mist into a fluidized bed reactor by utilizing a fan, and adding solid waste powder into the fluidized bed reactor; the mass ratio of the water mist and the solid waste powder entering the fluidized bed reactor and the gas flow speed of the CO2 gas and the water mist are adjusted, gas-liquid-solid three-phase fluidization is conducted on the solid waste powder in the fluidized bed reactor under driving of the gas phase of the CO2 gas, and mineralization reaction is conducted; after full reaction, discharging solid waste powder by using a rotary discharging device, and drying the solid waste powder to constant weight by using a constant-temperature drying box to obtain an auxiliary cementing material; according to the method, the contact efficiency and the mass transfer rate of the solid waste and CO2 can be improved, the solid waste can quickly react with CO2 gas in the fluidized bed reactor, the reaction time is remarkably shortened, and the low cost and the high efficiency of the CO2 mineralization reaction of the solid waste powder are realized.

The invention relates to the field of fluidization reaction, in particular to a staying-time-controllable multi-stage vibration fluidization gas-solid continuous reaction device which comprises a rack, a reaction bin and a vibration device, the reaction bin is divided into at least two bin chambers and a discharging chamber through partition plates, the adjacent bin chambers are communicated through first communication openings, and the vibration device is arranged in the rack; the discharging chamber is communicated with the adjacent bin chamber through a second communication port; each chamber is provided with an air outlet, the lower end of each chamber is provided with an air inlet, each air outlet is provided with a filtering mechanism, and the air outlet of each chamber is communicated with the air inlet of the adjacent chamber through a connecting pipe except the chamber farthest from the discharging chamber; a breathable supporting plate is arranged at the lower end of the reaction bin. According to the invention, the contact time of the gas-solid reaction materials can be effectively regulated and controlled according to the reaction process conditions, the gas-solid reaction is thorough, the powder applicability is high, and the technical problems that the existing gas-solid slow reaction system is difficult to realize continuous reaction and low in reaction efficiency are solved.

The invention provides a preparation system and method of porous electrode carbon. The system mainly comprises a two-section temperature-variable carbonization fluidized bed and an activation fluidized bed. According to the method, small-particle-size polymer particles are softened in the carbonization process and bonded with a large number of heat carrier particles to form composite particles, so that self bonding and excessive growth are avoided, and controllable carbonization is achieved in the two-section temperature-changing carbonization fluidized bed; and introducing the composite particles into an activation fluidized bed, carrying out high-temperature activation, and removing the heat carrier to obtain the porous carbon electrode carbon particles. According to the method, adhesion of polymer particles during carbonization is avoided, the problem of instability of superfine particle fluidization operation is solved, the links of grinding and heating and cooling are reduced, and the method has the advantages of being low in cost and capable of being continuously operated.

The invention provides a preparation method of high-purity and low-cost lithium sulfide and lithium sulfide prepared by the preparation method, and relates to the field of lithium sulfide materials. According to the preparation method of the high-purity and low-cost lithium sulfide, on the basis of the characteristics of high-efficiency heat and mass transfer and uniform dispersion of a fluidized bed fluidization technology, lithium source small liquid drops are coated on the surface of a fluidized precursor, then hydrogen sulfide gas is introduced, the lithium source melt liquid drops or the precursor coated with the lithium source solution liquid drops are subjected to a contact reaction with the hydrogen sulfide gas, and the high-purity and low-cost lithium sulfide is obtained. The lithium sulfide is prepared. According to the preparation method of the high-purity and low-cost lithium sulfide, the problems of more reaction byproducts, low hydrogen sulfide gas utilization rate, easiness in product agglomeration and non-uniform particle size distribution in the existing lithium sulfide preparation process can be effectively solved, the reaction temperature is further reduced, and the production safety is improved; and the problem that the product purity and quality are influenced by water vapor in the preparation process is effectively avoided, and stable and efficient lithium sulfide production is realized.

The invention discloses high-performance fluid-state solidified soil for backfill based on composite ardealite of building residue soil, which is prepared by taking the building residue soil as a core raw material, taking a compound of a polycarboxylic acid water reducer and hydroxypropyl methyl cellulose as a fluidization regulator, and mixing the fluidization regulator and the building residue soil to prepare the high-performance fluid-state solidified soil for backfill. Superfine slag powder, fly ash, nano silicon dioxide, metakaolin and ardealite are used as curing agents, so that the fluid-state solidified soil with strong performance is obtained. Through the synergistic effect of all the components and innovative processes such as liquid nitrogen low-temperature grinding, nano material compounding and a segmented vacuum stirring process, the effect that the ultrahigh strength of the construction waste soil reaches 7.5 MPa within 14 days is achieved for the first time and is improved by 40% or above compared with that of conventional solidified soil, and the industrial problem that traditional waste soil is insufficient in solidification strength is solved; and collaborative optimization of strength and fluidity is realized. Meanwhile, efficient resource utilization of the construction waste is achieved, land occupation and environmental pollution caused by muck landfill are greatly reduced, and the requirement for green and sustainable development is met.

The invention discloses a method for simultaneously monitoring particle sorting and bubble movement behaviors based on fluorescence tracing. Comprising the following steps: placing heavy particles in a two-dimensional fluidized bed; putting a fluorescent particle after the fluidized bed starts fluidization; shooting the two-dimensional fluidized bed by using an image acquisition module, and capturing images of fluorescent particles and bubbles; an MATLAB image acquisition tool box is utilized to process image areas of shot pictures frame by frame, motion attributes of fluorescent particles and motion attributes of bubbles are obtained, the processed pictures are superposed and recombined into a new picture, and interaction of coal and bubbles in the gas-solid separation fluidized bed is researched. According to the invention, the interaction of particles and bubbles in the gas-solid separation fluidized bed is researched by utilizing a fluorescent tracing technology, so that the fine particle separation effect in the gas-solid separation fluidized bed is improved.

The utility model relates to a biological fluidized bed tower-type water treatment system, which belongs to the technical field of sewage treatment, and comprises a tower body, the interior of the tower body is divided into an aerobic zone, an anoxic zone and a settling zone through an inner cylinder wall, a flow guide wall and a mud bucket wall, and a gas lifting device is arranged to communicate the interior of the aerobic zone with the interior of the anoxic zone. According to the present invention, the anoxic tank, the aerobic tank and the secondary sedimentation tank are organically combined to form the highly integrated tower reactor, and the occupied area is small compared with the traditional biochemical process; the biological fluidization system is higher in sludge concentration, can tolerate higher salinity, higher COD (Chemical Oxygen Demand) and higher nitrogen-containing wastewater, and is higher in load impact resistance; the oxygen utilization rate of the biological fluidized bed system is improved by 50% compared with that of traditional aeration, the sludge backflow and nitrification liquid circulation of the biological fluidized bed system synchronously adopt the gas stripping technology, a sludge backflow pump and a nitrification liquid backflow pump are reduced, and the operation energy consumption of the system is greatly reduced.

The invention relates to the technical field of softened water treatment devices, in particular to an induced crystallization granulation fluidized bed softened water treatment device. Comprising a cylinder, a stainless steel cathode layer is arranged on the inner side of the cylinder, the stainless steel cathode layer is electrically connected with a negative electrode of a power supply, an excitation system is mounted on the cylinder, a vertical vibration frame capable of vertically reciprocating is connected to the excitation system, a translation frame is slidably connected to the vertical vibration frame, and a synchronizing system for driving the vertical vibration frame and the translation frame to synchronously displace is arranged on the vertical vibration frame. The synchronous system is in transmission connection with a transmission shaft capable of alternately rotating forwards and backwards, a micro-filtration cylinder is rotationally mounted on the translation frame, an insulating shaft is rotationally mounted in the micro-filtration cylinder, the micro-filtration cylinder and the insulating shaft are driven by the transmission shaft, a plurality of guide rings are mounted on the micro-filtration cylinder, and an anode bar slides on the insulating shaft. According to the device, grain fluidization is strengthened through synchronous multi-dimensional excitation, the problem of local reaction dead angles is solved, the problems that a traditional device is low in crystallization efficiency and uneven in particle size are effectively solved, and the stability of grain settling separation is guaranteed.

The invention belongs to the technical field of rare earth element separation, and particularly relates to a fluidization, separation and enrichment method for rare earth element carrier ore of mine solid waste. Comprising the following steps that a mixture of pulverized coal and ferrosilicon powder serves as a separation medium and is added into a vibration gas-solid separation fluidized bed device, and the vibration frequency, the amplitude parameter and the gas speed of pulse airflow of the vibration gas-solid separation fluidized bed device are set according to the density of mine solid waste rare earth element carrier minerals, the separation granularity and the content of rare earth elements; the mine solid waste rare earth element carrier minerals form a scattered fluidization environment with uniform and stable density under the vibration-airflow synergistic effect of the vibration gas-solid separation fluidized bed, density gradient layering is carried out, and separation and pre-enrichment of rare earth elements in the mine solid waste rare earth element carrier minerals are achieved. According to the method, high-density coal gangue containing high rare earth elements is efficiently and accurately sorted, and the problem of pre-enrichment of the rare earth elements in mine solid waste rare earth element carrier minerals is effectively solved.

The invention provides a fluidization two-field coupled natural gas hydrate exploitation simulation method and system, and relates to the field of natural gas hydrate exploitation. A fluidization two-field coupled natural gas hydrate exploitation simulation method comprises the following steps: establishing a geometric model of a natural gas hydrate reservoir on the basis of reservoir parameters and physical parameters of the natural gas hydrate reservoir; based on a mass conservation equation, establishing a control equation set of the natural gas hydrate fluidization two-field coupling model; adjusting the control equation set based on the intrinsic dynamic behavior of the natural gas hydrate phase change decomposition and the two-phase seepage law of the natural gas hydrate to obtain a target control equation set; based on initial conditions and boundary conditions, solving the target control equation set to obtain two-phase seepage field and chemical decomposition field distribution; based on the distribution of the two-phase seepage field and the chemical decomposition field, calculating the accumulated decomposition, water production and gas production quality of the natural gas hydrate. Therefore, simulation accuracy can be improved, and engineering practicability is facilitated.

The invention relates to the technical field of coal gangue magnetic separation, in particular to a coal gangue magnetization fluidized roasting device which comprises a raw material preprocessing module, a fluidized magnetization roasting module, a magnetic separation module, a data center module and a mass feed module. The raw material preprocessing module realizes gradient crushing and dynamic screening of coal gangue through a multi-stage crushing unit and a closed cycle pneumatic classification device, and the online particle size analysis device monitors particle size data in real time and transmits the particle size data to the data center module; the fluidization and magnetization roasting module adopts a double-cavity reaction tower structure, and is combined with an infrared thermal imager array and a PI (Proportional Integral) controller to regulate and control the mixing proportion of fluidization gas and inhibit the oxidation of ferric oxide; through multi-module data driving optimization, the technical problems of insufficient multi-variable coupling regulation, low separation precision and high energy consumption are solved, and low-carbon efficient resourceful treatment of the coal gangue is realized.

The invention relates to a coarse particle fluidized bed column separation kinetic analysis device and method, belongs to the technical field of mineral processing and resource recovery, and solves the problem that fluidized bed column separation kinetic analysis is difficult to systematically develop. The device comprises a fluidized bed column, a filling medium, a slurry supply unit, a water supply unit and a gas supply unit, the fluidized bed column comprises a barrel body, the filling medium is arranged in the barrel body, the volume of the filling medium is reduced from bottom to top in a layered mode, the slurry supply unit comprises a slurry mixing barrel and a first conveying pipeline, and the first conveying pipeline is communicated with the slurry mixing barrel and the top of the barrel body; and the water supply unit is communicated with the air supply unit and then communicated with the lower part of the barrel body. According to the invention, the multi-element and multi-scale filling medium is adopted to disperse fluid and assist fluidization, and is limited between the two screens, so that the use amount of clear water and materials is reduced, a fluidized bed column separation dynamic test is optimized from the aspect of structure, the follow-up wastewater treatment amount of coarse grain mineral fluidized bed column separation of an actual separation plant is reduced, and the production cost is reduced. And the production cost of a selection plant is saved.

System and methods for plasma treatment of a fluidized bed of particles are disclosed. The systems include an energy coupling zone configured to generate a plasma from microwave radiation and an interface element configured to propagate the plasma from the energy coupling zone to a reaction zone. The reaction zone is configured to receive the plasma, receive a plurality of reactant particles in a fluidization plane direction from a fluidization assembly positioned below the reaction zone, and form a product in presence of the plasma. The fluidization plane is substantially perpendicular to the propagated plasma.

The invention discloses a fluidized collision type bioelectric reaction device suitable for high-carbon sewage treatment. The device comprises a reactor body, a capacitive electroactive biofilm carrier, an anode plate and a cathode plate. The reactor body is a cylinder, the bottom of the reactor body is provided with a water impeller, and the areas are separated by grids; the capacitive electroactive biofilm carrier is a sphere formed by stacking round sheets and is made of polyethylene plated with an ITO (Indium Tin Oxide) film, and stainless steel spikes are arranged on the surface of the capacitive electroactive biofilm carrier; the cathode plate is made of graphite and is cylindrical; the anode plate is made of stainless steel compounded by lauryl sodium sulfate and graphene-multi-walled carbon nanotubes and is cylindrical, the plate wall is hollow, and the anode and the cathode are connected through a circuit. Electron transfer is completed through flowing and collision of the capacitive electroactive biofilm carrier, the mass transfer efficiency and activity of the electroactive biofilm are enhanced, the high-carbon wastewater treatment capacity is improved, and meanwhile the device has the advantages of being high in impact load resistance and low in site area requirement.

The invention discloses a processing technology of solid waste coal gangue powder, which comprises the following steps: S1, crushing and grinding coal gangue to obtain coal gangue powder; s2, coal gangue powder enters a preheater through a feeder and then enters a heat treatment furnace to be subjected to high-temperature heat treatment, small-particle-size powder enters a cyclone powder collector along with high-temperature gas to be collected, powder is obtained after cooling, and other-particle-size powder is discharged out of the heat treatment furnace through an overflow opening to be collected. Heat energy of the coal gangue is utilized, natural gas is matched for auxiliary combustion, the coal gangue powder can be rapidly dehydrated, decarbonized, activated and whitened in a high-temperature fluidization state, the production period is short, the quality is stable, and high efficiency and energy conservation are achieved. The prepared powder can be respectively used in the fields of cement, ceramics, electroceramics, glass fibers and the like through coal gangue raw material selection and heat treatment temperature regulation and control, the market popularization value is high, and the application prospect is wide.

The utility model discloses a material drying system, and particularly relates to an aluminum hydroxide particle size-controllable drying system for aluminum fluoride production, which is structurally characterized in that a discharge port of an aluminum hydroxide feeder is connected with a feed port of an airflow drying pipe connected with hot air, and a discharge port of the airflow drying pipe is communicated with a feed port of a primary cyclone; a dust outlet in the upper portion of the first-stage cyclone is connected with the second-stage cyclone, a discharge port of the first-stage cyclone is connected with the filter sieve, a discharge port of the filter sieve is connected with the cooler, an air inlet of the cooler is connected with the fluidization fan, a dust outlet in the upper portion of the cooler is connected with the second-stage cyclone, and a discharge port of the cooler is connected with the aluminum hydroxide finished product bin. And a discharge hole of the second-stage cyclone is connected with the fine material bin. According to the utility model, the problems of high loss, low yield, easiness in blockage of the fluidized bed and poor product quality in the aluminum fluoride production process caused by overlarge or oversmall aluminum hydroxide granularity are solved, and the yield and the quality of the product are improved.

The invention provides a powder fuel-based cross-medium ramjet engine which comprises a powder fuel cabin, a combustion chamber and a spray pipe are fixedly connected to the axial front end of the powder fuel cabin, a high-pressure gas tank is fixedly connected to the axial rear end of the powder fuel cabin, and a plurality of gas generators are fixedly arranged on the inner wall of the combustion chamber; a plurality of air inlet channels are arranged on the outer wall of the combustion chamber; the high-pressure gas tank is communicated with the powder fuel cabin through a high-pressure gas flow channel and a fluidization pipeline, and is communicated with the gas inlet channel through a gas inlet channel pressurizing pipeline; a liquid medium cavity is formed in the air inlet channel and communicates with the combustion chamber through a liquid medium main supply pipeline, an upstream liquid supply pipeline and a downstream liquid supply pipeline. Combustion energy release of the powder fuel in the air mode and the underwater mode of the cross-medium ramjet engine is effectively promoted, and the method is suitable for the powder fuel cross-medium ramjet engine.

The invention relates to a fluidized bed reaction system for a silicon-carbon negative electrode material. The silicon-carbon negative electrode material fluidized bed reaction system comprises a drying tank, a fluidized bed reactor and a discharge tank, the drying tank is provided with a material cavity, and the drying tank can dry materials in the material cavity and can also convey replacement gas into the material cavity to replace gas in the material cavity; the fluidized bed reactor is internally provided with a gas-solid separation area, a reaction area and an initial fluidization area which are sequentially arranged from top to bottom, and the reaction area is communicated with the material cavity so as to receive the dried materials; the discharge tank is provided with a dust removal cavity, the dust removal cavity is communicated with the gas-solid separation area through a discharge pipeline, the discharge pipeline is provided with a blasting assembly, and when the pressure in the fluidized bed reactor exceeds a first preset value, the blasting assembly can be broken to release gas in the fluidized bed reactor; meanwhile, powder in the fluidized bed reactor can be discharged into the washing liquid in the dust removal cavity through the discharge pipeline.

The invention relates to the field of sewage treatment, in particular to a fluidized bed reactor for sewage treatment, which comprises a vertical tank body, the bottom of the tank body is provided with a water feeder, the water feeder is connected with a water inlet pipe, the tank body is connected with a reflux pipeline, the lower end of the reflux pipeline is connected with the water feeder, and the higher end of the reflux pipeline is connected with a water absorption piece. The water absorption piece is located in the tank body and divides the interior of the tank body into a clear water area located above the water absorption piece and a fluidization area located below the water absorption piece, a circulating pump is arranged on the backflow pipeline, the fluidization area is provided with a plurality of water outlet pieces which are vertically arranged, a plurality of liquid outlet holes are formed in the water outlet pieces, and the water outlet pieces are all communicated with the backflow pipeline; and liquid sucked by the water suction piece enters the water inlet device and each water outlet piece through the backflow pipeline. According to the scheme, the problem that the fluidization effect of the middle of the fluidization area is poor is solved, and the fluidization effect of the middle of the fluidization area is improved.

The invention provides a liquid air energy storage novel cold storage system and method based on a fluidization technology, and relates to the technical field of energy storage. The cold storage system comprises a particle storage device, a supply fluidized bed, an air box, a fluidized bed heat exchanger, a separation fluidized bed and an air supply device. The particle storage device is used for storing solid-phase particle media completing the cold release process or solid-phase particle media completing the cold storage process. According to the liquid air energy storage novel cold storage system based on the fluidization technology, due to the fact that the solid-phase particle media are adopted as a cold storage mode, safety is high, operation is easy, and the type and size of the solid-phase particle media can be adjusted according to the requirement for the cold storage amount; the heat exchange fluid does not directly contact with the solid-phase particle medium for heat exchange, so that the application range is wider; the liquid air energy storage novel cold storage system based on the fluidization technology has the advantages of being high in safety, easy to operate, high in cold storage efficiency and wide in application range.

The invention discloses a raw material conveying device for polyaluminum chloride production and a working method. The raw material conveying device comprises a conveying pipe, a damping base, a storage tank, a fluidization anti-blocking module, a dust pumping system and a control unit. The upper portion of the conveying pipe is connected with hose discharging openings of a plurality of sets of storage tanks corresponding to the powder screening devices through star-shaped discharging valves. The bottom of the storage tank is mounted on a damping base, and a vibrator is fixedly mounted on the lower side of the storage tank; the storage tank is internally provided with a fluidization anti-blocking module which can fluidize materials through airflow so as to prevent blocking and caking; the dust suction system comprises a dust suction hood arranged at the top of a feeding pipe on the upper side of the storage tank, and the dust suction hood is connected with a cyclone separator capable of collecting dust generated in the feeding process and an induced draft fan through pipelines. The raw material conveying device for polyaluminum chloride production has the functions of effectively solving the problems of caking, blockage and dust caused by moisture absorption of materials and automatically adjusting conveying parameters according to material characteristics.

The invention provides a gas disturbance type viscous ultrafine particle fluidization reaction device system and method. The gas disturbance type viscous ultrafine particle fluidization reaction device system comprises a fluidization reaction unit, a gas supply unit, a multidirectional gas supply unit and a gas-solid separation unit, the fluidization reaction unit comprises a reaction cavity, and a gaseous zone and a dense-phase zone are sequentially arranged in the reaction cavity in the axial direction; the gas supply unit is connected with the bottom of the reaction cavity and is used for providing primary gas flow for the dense-phase region; the multidirectional air supply unit comprises an air supply module and a plurality of air supply assemblies, the air supply module is connected with the air supply assemblies, and the air supply assemblies are independently connected with the reaction cavity, communicate with the dense-phase region and are used for providing secondary airflow; and the gas-solid separation unit is connected with the gaseous region. Through reasonable configuration and structural arrangement of the multidirectional air supply units, uniform flowing and gas-solid efficient contact of materials in the fluidization reaction cavity are realized, and the problems of particle agglomeration and channeling are solved.

A circulating fluidization device comprises a suspended filler chamber, a sliding cylinder type carbon source chamber and a microbial carrier chamber. The suspended filler chamber comprises a mounting area, a filling area, a porous filter filler foundation and a communicating hole. The installation area comprises a supporting ring and a concave clamping groove. The sliding cylinder type carbon source chamber comprises a cylinder body, a rotating shaft, a stirring rod, a feeding hole, a sealing cover, a lifting handle, a blow-down pipe and spherical solid filler. The microbial carrier chamber comprises a polyurethane sponge filler and a convex clamping groove. Compared with the prior art, the spherical solid filler reacts with the water body in a stirring manner, sewage treatment is performed, a carbon source is released, pressurization is performed through the water pump, the contact rate with the spherical solid filler is increased, the filler dissolving speed is high, and the device is suitable for various water body environments, low in equipment cost and easy to popularize. The method is suitable for sewage treatment. Meanwhile, the equipment is directly put into a water area for use, is suitable for sewage action in different environments, and is wide in application range and low in equipment cost.

The utility model relates to the technical field of wastewater treatment, and discloses a high-hardness and high-salinity wastewater treatment device which comprises a seed crystal fluidization tank, a medicament storage tank, a crystallization and granulation fluidized bed and a multi-effect evaporation system, the crystallization and granulation fluidized bed is respectively connected with the seed crystal fluidization tank and the medicament storage tank through pipelines, and the multi-effect evaporation system is connected with the seed crystal fluidization tank and the medicament storage tank through pipelines. The liquid inlet position of the multi-effect evaporation system is connected with a liquid outlet end pipeline of the crystallization and granulation fluidized bed, the liquid return position of the multi-effect evaporation system is connected with a liquid inlet end pipeline of the crystallization and granulation fluidized bed, the air outlet end of the multi-effect evaporation system is connected with a condenser through a pipeline, and the condenser is connected with a vacuum pump through a pipeline; the liquid return position of the multi-effect evaporation system is externally connected with high-hardness and high-salinity wastewater, and the high-hardness and high-salinity wastewater can be mixed with return liquid flowing out of the liquid return position of the multi-effect evaporation system and then enters the liquid inlet end of the crystallization and granulation fluidized bed; the device has the advantages that the occupied area is reduced, and the operation cost is reduced.

The invention relates to the technical field of electronic digital data processing, and discloses a fluidization system digital twinning construction and state evaluation method, which comprises the following steps: carrying out CFD (Computational Fluid Dynamics) solution on various gas-solid fluidization working conditions, and establishing a numerical simulation database; according to the characteristics of the gas-solid fluidization system, determining a core reward function and physical constraints, training a reinforcement learning agent, and establishing a fluidization system digital twinborn model base; constructing a fluidized system environment according to the twin targets, and calculating multi-physical field distribution and discrete particle state evolution at subsequent moments; and using a multidisciplinary fusion degradation model to analyze the stress condition of the material at each position in a selected time period, calculating the fatigue condition and progressive loss rate of the material, performing system state evaluation, and outputting a result. The problem that in the prior art, simulation precision and efficiency of a fluidization system are difficult to consider at the same time is solved, and the purposes of efficient and accurate simulation, high operation reliability, comprehensive evaluation and analysis, convenient maintenance and high safety are achieved.

Provided is a method for operating a liquefied gas storage tank (1) comprising: an inner tank (4) for storing a liquefied gas; an outer tank (3) for accommodating the inner tank (4) with a cold-reserving layer (13) therebetween; and a powder heat-insulation material (15) with which the cold-reserving layer (13) is filled in a state in which a gap is generated with respect to a roof (33) of the outer tank (3). The method comprises: performing a hot-up in which the liquefied gas is removed from the inner tank (3) to bring the temperature of the inner tank (3) close to room temperature; and performing a powder fluidization in which a gas is supplied to the cold-reserving layer (13) during the hot-up, and the powder heat-insulation material (15) is fluidized by the supplied gas.

The utility model discloses a flash dryer, and belongs to the technical field of pneumatic drying equipment. The device mainly comprises a control system, a drying chamber, a feeding system, a stirring and crushing system, a fan system and a dust removal system, hot air of the fan system enters the drying chamber through an airflow guide device, and a spiral fluidization distance reduction assembly connected with the drying chamber in a sealed mode is installed at the upper end of the drying chamber; the spiral fluidization distance reducing assembly comprises a circular truncated cone wind shield, a large-caliber flanging connecting piece which is fixedly connected with the lower end of the circular truncated cone wind shield in a sealed manner, and a small-caliber flanging connecting piece which is fixedly connected with the upper end of the circular truncated cone wind shield in a sealed manner; and the airflow flowing out of the small-caliber flanging connecting piece is dedusted by the dedusting system. Due to the design of the spiral fluidization distance reducing assembly, the spiral fluidization distance reducing assembly plays a role in screw pitch extrusion and acceleration on airflow in the drying chamber, and the spiral fluidization distance reducing assembly is small in overall size, small in occupied area, high in flexibility, high in practicability, high in market competitiveness, wide in application range and particularly suitable for places with limited space such as laboratories and small factories.

The invention belongs to the field of powder material processing, and particularly relates to a drying and cooling all-in-one machine and a drying and cooling method.The drying and cooling all-in-one machine is characterized in that a fluidized drying section, a fluidized cooling section and a gravity cooling section are arranged in a shell body from top to bottom, so that materials of the fluidized drying section and the fluidized cooling section are in a fluidized state; by means of the arrangement, materials fed from the feeding port are rapidly spread in the horizontal direction, even particle distribution is formed in the cross section of the shell body, the materials downwards, evenly and integrally pass through the gravity cooling section, and uneven cooling caused by material segregation and different cooling speeds of all the materials is eliminated; the high heat and mass transfer rate brought by material fluidization is utilized, and the materials are efficiently dried in the drying section; and damp and hot gas can be effectively replaced in the fluidization cooling section, so that material scabbing is avoided. After the material subjected to fluidized drying, cooling and dry gas replacement enters the gravity cooling section, a refrigerant with lower temperature can be adopted for cooling, and meanwhile, the cooling efficiency and the cooling effect are improved.

A method and a fluidization apparatus unit for treating a large number of batches of a material having a moisture content and having a material temperature. The fluidization apparatus unit includes a fluidization apparatus. The fluidization apparatus has a fluidization chamber which has a material inlet and a material outlet, and also includes a fluid inlet and a fluid outlet for a drying gas which fluidizes the material in the fluidization chamber and which has a drying gas moisture content.