789 results about "Fluidization" patented technology

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 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 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 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 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.

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.

The invention discloses a fluidized bed reactor for preparing porous carbon through collaborative graded activation of water vapor and CO2 and a method for preparing the porous carbon through collaborative graded activation of the water vapor and the CO2, and belongs to the technical field of material chemical engineering. The fluidized bed reactor is composed of a shell, a fluidization section, a sedimentation section, a porous distribution plate, a gas distribution chamber, a stirring device and a temperature control system, and uniform fluidization and multi-section temperature control of superfine powder are achieved. According to the activation method, steam and CO2 collaborative graded etching pore-forming is adopted, specifically, in the first stage, quick pore-forming is conducted mainly through steam at the temperature of 500-800 DEG C, in the second stage, pore-expanding is conducted cooperatively through steam and CO at the temperature of 700-900 DEG C, and in the third stage, fine control is conducted mainly through CO2 at the temperature of 850-1050 DEG C; the continuous preparation of the high-performance porous carbon with the specific surface area of 1500-2500m < 2 > / g, the pore volume of more than or equal to 0.8 cm < 3 > / g and the 2-10nm mesopores accounting for 20-60% is realized by adjusting the gas velocity, the activation temperature, the activation time and the ratio of water vapor to CO2, the bottlenecks of low specific surface area, single pore diameter, large batch difference and the like of physical activation are solved, and the method is suitable for green and low-cost production of high-end energy storage carbon materials such as supercapacitors, lithium / sodium ion batteries and the like.

The wastewater treatment system comprises a water inlet unit, a reactor, a separation unit and a circulation unit which are sequentially connected to form a closed-loop system, the water inlet unit is further connected with a chemical dosing unit, the water inlet unit is used for conveying wastewater to the reactor, and the chemical dosing unit is used for adding alkali into the wastewater to adjust the pH value and providing required magnesium ions; a fluidization reaction zone and a separation zone are arranged in the reactor, and the fluidization reaction zone promotes generation and growth of struvite particles through particle collision and aggregation; the separation zone enables generated particles to partially fall back to the fluidization reaction zone for continuous reaction through preliminary solid-liquid separation; the separation unit is used for receiving the wastewater in the separation area, further removing residual particles, and enabling the small particles to flow back to the reactor through the circulation unit for recycling. By optimizing the particle generation, separation and backflow processes in wastewater treatment, the formation of target large particles is promoted, the resource recycling is facilitated, meanwhile, the consumption of chemical agents is reduced, and the cost is reduced.

A de-powdering system includes one or more sidewalls defining a support chamber configured to contain an additive manufacturing build where the additive manufacturing build includes one or more objects disposed within a powder build material. A fluidization mechanism is fluidically couplable to a fluid source and includes one or more flow channels fluidically coupled to the support chamber. The fluid source is actuatable to provide a fluid from the fluid source to the support chamber and inject the fluid into the support chamber via the one or more flow channels. The one or more flow channels are oriented to introduce a swirling flow of the fluid into the support chamber to fluidize at least a portion of the powder build material within the support chamber.

The invention provides a mechanical stirring type coarse particle fluidized bed flotation device and method.The groove body structure of a flotation groove comprises an inner groove body and an outer groove body, the inner groove body is arranged in the outer groove body, and a circulation channel is formed between the inner groove body and the outer groove body; the ore feeding distribution device is arranged at an ore feeding inlet in the upper part of the flotation tank body; the stirring device comprises a stator and an impeller which are arranged in the flotation tank body; the flow guide hole grid plate is arranged in the inner groove body and located above the stator and the impeller. Stable rising water flow is generated through the suction effect of the impeller and the circulation channel, the fluidization flotation process can be achieved without adding extra clear water, and the problem that a fluidization flotation column is large in water consumption is solved. The flow guide hole grid plate is arranged in the inner tank body, so that disordered fluid coming out of an impeller stirring area is converted into uniform and stable rising fluid, and the stability of a bed layer and mineralized bubbles is improved. The problems that a traditional flotation machine is poor in coarse particle recovery effect, and a fluidization flotation column is large in water consumption and poor in fine particle selectivity are solved.

The invention provides a design method of high-temperature-resistant particles for energy storage of a thermal power plant, and belongs to the technical field of ultrahigh-temperature fluidized energy storage.The design method comprises the steps that a game optimization model is established to determine a basic formula of an energy storage material, and a contribution value jitter increasing and expanding algorithm is adopted to construct a sparse heat conduction matrix; a particle dispersion path optimization algorithm is used for controlling distribution of a hexagonal boron nitride heat conduction enhancer, expanded graphite and carbon fibers are mixed according to the proportion of 3: 1, a silane coupling agent is added for high-temperature composite treatment, a uniform coating layer is formed through an anti-oxidation coating precursor, and the particle size of particles is controlled within the range of 50-200 micrometers through airflow classification. And finally, a surface modifier and a fluidity improver are added to finish surface treatment in a high-temperature fluidized bed, so that the technical problems of material structure failure and heat storage performance degradation caused by thermal stress accumulation in a repeated thermal cycle process of the energy storage particles in a high-temperature environment are solved.

The invention relates to the technical field of sewage treatment, in particular to an assembly type stacked hydraulic grit chamber for a sewage treatment plant. The assembly type stacked disc hydraulic grit chamber for the sewage treatment plant comprises a stacked disc module device, an unpowered water distribution device and a backwashing and fluidizing device, the stacked disc module device comprises a plurality of stacked discs which are sequentially arranged at intervals in the vertical direction, a water outlet channel is formed between every two adjacent stacked discs, and a water outlet is formed in the inner side of each stacked disc. According to the assembly type stacked disc hydraulic grit chamber for the sewage treatment plant, water flow is sprayed to the inner surface of the stacked disc through the cleaning disc assembly so as to wash the inner surface of the stacked disc, the automatic backwashing function is achieved, the problem of sand accumulation of the stacked disc is effectively solved, and sand hardening is prevented. Through the automatic backwashing function, the manual cleaning frequency and strength are greatly reduced, the manual labor intensity and potential safety hazards are reduced, the stacked trays are prevented from being blocked, and the service life of the stacked trays is prolonged.

The invention relates to the technical field of production of silicon-carbon negative electrode materials, in particular to a continuous production device and method for preparing a silicon-carbon negative electrode material by taking porous carbon, silane and hydrocarbon gas as raw materials. The device comprises fluidized beds A1 and B1, storage tanks A2, A4, B2 and B4, cyclone separators A3, B3 and C2 and a heat exchanger C1, and stable fluidization and continuous production of materials are realized through the design of the multi-section reducing fluidized bed. The method comprises the following steps: carrying out silane cracking and silicon embedding on porous carbon, carrying out hydrocarbon gas cracking and carbon coating, cooling and separating, and finally obtaining the silicon-carbon negative electrode material with high capacity and high initial coulombic efficiency. The equipment adaptability can be remarkably improved, the service life is prolonged, efficient and continuous production is achieved, and the equipment is suitable for industrial-scale application.

The invention discloses a variable-load chemical looping combustion system which comprises an air reactor, a fuel reactor, a feeding loop and a material returning loop. An industrial steam supply heating surface A is arranged in the air reactor, and 1-N load regulators are connected in parallel between the air reactor and the fuel reactor; each load regulator comprises a furnace body, a fluidization device arranged in the furnace body, a gas inlet connected with the furnace body below the fluidization device, a gas outlet connected with the furnace body above the fluidization device, oxygen carrier inlet pipes and oxygen carrier outlet pipes, the oxygen carrier inlet pipes are connected with the fuel reactor and are provided with regulating valves, and the oxygen carrier outlet pipes are connected with the air reactor; an industrial steam supply heating surface B is arranged in the furnace body above the fluidizing device; the invention further discloses a using method of the variable-load chemical looping combustion system. According to the invention, the load can be flexibly and stably adjusted in a wide range, meanwhile, negative effects caused by cooling of the reaction area and reduction of the activity of the oxygen carrier are avoided, and efficient and reliable operation of the chemical looping combustion system under the wide-load working condition is ensured.

The invention relates to the technical field of fluidized beds, in particular to a fluidization coating device with pulse, stirring and double-particle triple synergy, which comprises a spray fluidized bed reactor, a fluidized bed reactor, a stirring device and a double-particle fluidized bed reactor, the gas distributor is positioned above the carrier gas inlet and is used for uniformly distributing carrier gas entering from the carrier gas inlet on the whole bed layer to form fluidized gas; the gas-liquid two-phase flow nozzle is connected with the gas supply unit and the coating liquid conveying tank and is used for atomizing the coating liquid into micron-sized small liquid drops and then spraying the micron-sized small liquid drops into the spray fluidized bed reactor; the mechanical shearing unit continuously generates local mechanical crushing on the aggregate; the pulse air inlet device is connected with the air supply unit and is used for applying periodic pulse airflow to the fluidized bed layer and breaking particle aggregation and channeling formed during initial fluidization; and the flow aiding particles and the fine powder particles to be coated jointly form a double-particle fluidization system. The problems of difficult fluidization starting, non-uniform fluidization and the like of ultrafine powder particles are solved through triple synergy of pulse, stirring and double particles.

The invention discloses a device and a method for synchronously removing heavy metals and organic matters in industrial wastewater, and particularly relates to the technical field of water treatment.A complexing agent is used for promoting manganese dioxide on the surface of manganese sand to activate peroxymonosulfate to generate high-activity sulfate free radicals and persulfate free radicals, so that the oxidative degradation efficiency of organic pollutants is improved; meanwhile, residual manganese dioxide formed in the reaction process has good heavy metal adsorption performance, and the mass transfer and reaction rate of pollutants is enhanced by combining the dynamic fluidized contact effect of manganese sand particles in the fluidized bed reactor. According to the process provided by the invention, various organic pollutants and heavy metal ions in the wastewater can be synchronously and efficiently removed under a mild condition, the problems of low treatment efficiency, complex process flow, secondary pollution and the like in a traditional method are avoided, and the process has a good application prospect and popularization value; the technical challenges of complex components and high treatment difficulty of industrial wastewater can be effectively handled.

The utility model relates to the technical field of bag-type dust removers, in particular to a bag-type dust remover which comprises a shell, the top end of the shell is communicated with an exhaust port, a compartment rotation switching mechanism comprises six filtering chambers distributed in a honeycomb shape, and an air inlet pipe is fixedly connected to the lower portion of the outer wall of the shell. The control system controls and starts the corresponding pulse blowing pipes to blow downwards to form reverse airflow and strip a dust layer on the surface of the filter bag, the vibration motor drives the whole filter chamber to shake and shake off deep accumulated dust, the dust cleaning effect is good, the shaken-off dust is collected through the dust hopper, finally, the dust is discharged from the dust discharging pipe by opening the dust discharging valve, the pneumatic fluidization rod is started, the airflow enables the dust to be fluidized, and the dust cleaning effect is good. According to the invention, hardening and bridging are prevented, blockage of the ash hopper is avoided, manual knocking intervention is not needed, the safety is high, different filter chambers can be switched to enter a filter mode, and the other filter chambers sequentially enter an ash removal state, so that the device can work continuously without shutdown, and the working efficiency is improved.

The present application relates to the technical field of high-salinity wastewater, and particularly relates to a device and a method for separating metal ions in high-salinity wastewater by micro-interface induced crystallization. The present application provides a device for separating metal ions in high-salinity wastewater by micro-interface induced crystallization, which comprises a cylinder, and a fluid mixing zone, a circulating granulation zone and a particle separation zone are sequentially arranged in the cylinder from bottom to top. The device for separating metal ions in high-salinity wastewater by micro-interface induced crystallization provided by the present application helps high-salinity wastewater to enter the upper space of the gas-liquid distributor at different speeds with the help of the differential-speed gas-liquid distributor; meanwhile, more crystalline particles are sent to the circulating granulation zone, the flow direction of the seed crystal in the circulating granulation is regulated, and the crystallization efficiency of the seed crystal is improved. The fluidization zone is designed to be wide at the bottom and narrow at the top, the cross-sectional area of the flow channel of the upper fluidization zone is increased, more sufficient reaction space is provided for the crystalline particles, the drag force of the fluid on the seed crystal particles is weakened, and the residence time of the crystalline particles in the upper fluidization zone is prolonged.

According to the oxygen-enriched combustion system of the circulating fluidized bed boiler and the operation method, under the oxygen-enriched combustion working condition, part of low-temperature and clean flue gas at the tail is led back, mixed with pure oxygen and then fed into a hearth, the total in-furnace gas flow after mixing is kept equivalent to the original total in-furnace air flow, and the total in-furnace gas flow after mixing is kept equivalent to the original total in-furnace air flow; when the mixed gas entering the furnace keeps the oxygen volume concentration equivalent to or slightly higher than that of air, the problems of fluidization, combustion and heat transfer in a hearth can be completely solved, and safe, reliable, economical and environment-friendly operation of a unit can be guaranteed; after air is completely replaced by the mixed gas, the CO2 concentration in the generated flue gas is greatly improved and can reach 80% or above at most, and CO2 can be captured with low cost and high efficiency; according to the invention, free switching between air combustion and oxygen-enriched combustion can be realized.

An apparatus for mixing and / or conditioning powdery materials through fluid-free fluidization comprises a movably supported container that defines a first processing chamber for receiving powdery material; an oscillation generator by which a powdery material located in the processing chamber can be subjected to an oscillation, in particular a sinusoidal oscillation, during operation; and a control unit that controls the oscillation generator.

The invention provides a high-performance silicon negative electrode material prepared from modified photovoltaic crystalline silicon waste and a preparation method of the high-performance silicon negative electrode material, and belongs to the technical field of lithium ion battery silicon negative electrodes. The method comprises the following steps: adding the photovoltaic crystalline silicon waste into acid liquor for acid leaching and impurity removal, and drying to obtain pretreated silicon powder; transferring into a fluidized bed ALD reaction cavity, regulating and controlling the air flow fluidization speed, alternately introducing a metal precursor source and an oxygen source, and purging redundant products to obtain silicon / metal oxide powder; and alternately introducing a lithium source and a fluorine source, and purging redundant products to obtain silicon / metal oxide / lithium fluoride powder. And the deposited metal oxide not only can slow down the volume expansion of the silicon waste material in the charging and discharging process, but also can effectively stabilize the SEI layer and slow down the crushing and reconstruction of the SEI layer and the consumption of lithium, so that the cycling stability of the lithium ion silicon-based negative electrode is improved. The lithium fluoride coating can be beneficial to construction of stable SEI, and the SEI layer rich in lithium fluoride can provide a fast ion channel, so that the material has excellent rate capability.

The utility model relates to the technical field of pneumatic conveying system fluidization devices, and discloses a reciprocating non-return type wear-resistant fluidization device for a pneumatic conveying system, which comprises a bin pump, a mounting plate, an outer sleeve, an inner sleeve and a screw sleeve, the screw sleeve is arranged on the mounting plate, and a buffer gasket is arranged at the top of the inner sleeve. The outer wall face of the outer sleeve is provided with the outer vent holes, the outer wall face of the inner sleeve is provided with the inner vent holes, when compressed air enters the inner sleeve, the spring between the top of the outer side of the inner sleeve and the upper portion of the inner side of the outer sleeve is compressed, the top of the inner sleeve and the upper portion of the outer sleeve are limited, and the inner vent holes in the inner sleeve are aligned with the outer vent holes in the outer sleeve, so that air is circulated; after compressed air stops, the elastic force of the spring between the outer sleeve and the inner sleeve acts on the inner sleeve, the inner sleeve moves downwards to enable the inner vent hole and the outer vent hole to be staggered, a good non-return effect is achieved, it is guaranteed that materials cannot enter the air pipeline, and the problem that the air pipeline is blocked by the materials due to the fact that a common fluidizing device does not have the non-return effect is solved.

The utility model relates to the technical field of pneumatic ash conveying, in particular to a nitrogen backflow pigging ash conveying structure of a weighing type bin pump. Comprising a bin pump body, a fluidization disc is arranged at the bottom of the bin pump body, one side of the bottom of the bin pump body communicates with an air inlet pipe, an air inlet valve set is arranged on the air inlet pipe, the other side of the bottom of the bin pump body communicates with an ash conveying pipe, a discharging valve is arranged on the ash conveying pipe, a bearing support is arranged on the periphery of the lower portion of the bin pump body, and a weighing sensor is arranged at the bottom end of the bearing support. A first pressure transmitter is arranged on the top of the bin pump body, and a backflow mechanism is arranged between the ash conveying pipe and the ash storage container. The feeding weight is accurately recognized and the air inlet weight is accurately controlled through the weighing sensor, the material-air ratio can be accurately and reasonably controlled, when pipe blockage occurs, the backflow mechanism is opened, a high-pressure material-air mixture returns to the ash storage container through the backflow mechanism due to the pressure difference, the pipe blockage problem caused by insufficient fluidization is prevented, and continuous ash conveying is achieved.

This invention provides a wastewater treatment method, system, and storage medium, applied to water pollution treatment equipment. The method includes: pretreating the wastewater to be treated through a first treatment module to obtain first treated water; acquiring the fluidization parameters of a fluidized bed unit; controlling the air intake mode of an air intake unit according to the fluidization parameters, so that the fluidized bed unit fluidizes the first treated water to obtain second treated water, wherein the temperature spectrum, dissolved oxygen content, and sediment height of the fluidized bed unit correspond to the bacterial species; and treating the second treated water through a third treatment module to obtain target treated water. By controlling the air intake mode of the air intake unit through fluidization parameters, the dissolved oxygen content, temperature spectrum, and sediment height of the fluidized bed unit are adapted to the bacterial species, maintaining stable dissolved oxygen content, reducing carrier sedimentation and accumulation, thereby maintaining the stability of the bacterial community and ensuring the degradation efficiency of organic pollutants by the bacterial community.

The invention relates to the technical field of energy-saving and environment-friendly production, in particular to a calcining method and system for flowing suspension roasting petroleum coke. The method comprises the following steps: feeding a petroleum coke raw material into a multi-stage preheating system for countercurrent preheating; the preheated material enters a flowing suspension roasting furnace, and forms a suspension state in high-temperature airflow for rapid roasting; the roasted material is separated from flue gas, the separated flue gas containing volatile components enters a combustion furnace to be combusted and then is purified, and part of heat of the flue gas is recycled; the separated high-temperature calcined coke is cooled through an air cooling system and a water cooling system, heat is recycled, and hot air generated by air cooling is recycled to the roasting furnace. By adopting a fluidization technology, the roasting time is shortened to a second level, and the production efficiency is remarkably improved; through multi-stage countercurrent heat exchange, flue gas combustion and heat recycling, gradient utilization of heat and accurate control of atmosphere are realized, energy consumption and oxidation burning loss are greatly reduced, volatile components of the product are stably controlled to be below 1%, the yield is high, and the quality is uniform.

This utility model relates to the field of ironmaking technology, specifically to a fluidization device for the conveying pipeline of a flue gas desulfurization silo in a hot blast stove. This device addresses the problem of poor fluidity and easy adhesion of the desulfurizing agent, preventing it from fully reacting with the waste gas and resulting in inadequate waste gas treatment. The device includes a first and second ball valve on both sides of the silo bottom, a first and second fluidizing pipe running inside the branch pipes, and a fifth and sixth ball valve outside the two branch pipes. When blockage occurs, the first and second ball valves are opened to introduce nitrogen into the bottom of the silo for the first fluidization. Then, the first and second fluidizing pipes are opened, and nitrogen is introduced for the second fluidization. The fifth and sixth ball valves are further opened to introduce nitrogen for the third fluidization. Finally, the loss-in-weight feeder is activated to feed material into the flue gas desulfurization silo through mechanical stirring, reducing material accumulation, lowering the probability of blockage, and effectively solving the problems of material buildup, blockage, and poor material flow at the silo bottom.

The utility model belongs to the technical field of chemical spraying equipment of a crystallization granulation catalytic softening fluidization tower, and particularly relates to a chemical spraying head of the crystallization granulation catalytic softening fluidization tower. Comprising a shell, and a cavity is formed in the shell and used for storing liquid medicine; the connecting end is arranged at the bottom of the shell and used for connection, a connecting channel is formed in the connecting end, and the connecting channel communicates with the cavity; the cover plate covers the upper part of the shell and is used for sealing the upper part of the shell; the medicine spraying opening is formed in the upper part of the shell and is used for communicating a cavity in the shell with the outside; the elastic ring has elasticity, and the elastic ring is annularly arranged on the upper portion of the shell in a sleeving mode and used for blocking the medicine spraying opening. The liquid medicine spraying device solves the problem of uniform liquid medicine spraying of the fluidization tower.

The invention relates to the technical field of dust remover ash buckets, in particular to a dust remover ash bucket heating-free anti-blocking device which comprises an ash bucket box, a dust charge quantity detection and control sensor is installed on the outer side face of the ash bucket box in a penetrating mode, and an accident unblocking mechanism for removing hardened materials in the ash bucket box is installed on the ash bucket box. A fluidizing air treatment mechanism for separating fluidizing air into negative ions is mounted in the ash bucket box in a penetrating manner, and an air blowing mechanism capable of movably blowing out the fluidizing air is mounted at one end, positioned in the ash bucket box, of the fluidizing air treatment mechanism. When the air blowing mechanism moves, fluidizing air can be blown into the ash bucket box from multiple moving directions, so that the fluidizing air can be mixed with materials of all parts, when the air conveying cylinders distributed at the four corners of the ash bucket box swing to spray air through the air outlet spray heads, air can be fully blown to the inner side part of the ash bucket box at certain angles, and the air blowing efficiency is improved. And fluidization wind with negative ions can be in full contact with internal materials.

The application provides an ammonia oxidation catalyst, a preparation method and application thereof, and a method for synthesizing acrylonitrile by propylene ammonia oxidation, and the general formula of the active component of the catalyst is Mo 12 Bi a B b C c D d O x ; wherein B is selected from at least one of group VIII metal elements; C is selected from at least one of alkaline earth metal elements; D is selected from at least one of alkali metal elements; and the hollow rate of the catalyst is 0-5%. The catalyst has the advantages of good sphericity, few hollow particles, uniform particle size distribution, good fluidization state in a fluidized bed reactor, less catalyst loss after long-term operation, high acrylonitrile yield, low content of by-products two-carbon and propylene aldehyde, and better long-term operation stability.