655results about "Granulation by liquid drop formation" patented technology

The present invention belongs to the field of microbead preparation technology, and specifically relates to a microbead production process with adjustable internal phase based on microfluidic technology and its application. The microbead production process includes the following steps: (1) raw material transportation: the required materials are transported to the microfluidic chip separately through a pump under heat preservation conditions; (2) logistics shearing: the required materials are sheared in the microfluidic chip to obtain composite droplets; (3) cooling and molding: after the sheared droplets are cooled, they are cooled and solidified using a cooling medium to form microbead particles; (4) product collection: the microbead particles and the cooling medium are subjected to solid-liquid separation, filtered, and collected to obtain microbeads. The microbead production process of the present invention can quickly realize the continuous production of double-layer microbeads, realize the precise regulation of the inner layer of the double-layer microbeads, and quickly and accurately control the particle size of the microbeads; at the same time, it can quickly realize the production conversion between single-layer microbeads and double-layer microbeads.

The invention belongs to the technical field of microbead preparation, and particularly relates to a microbead production process with an adjustable internal phase based on a microfluidic technology and application of the microbead production process. The micro-bead production process comprises the following steps: (1) conveying raw materials: respectively conveying required materials to a micro-fluidic chip through a pump under a heat preservation condition; (2) material flow shearing: shearing the required material in the micro-fluidic chip to obtain composite liquid drops; (3) cooling and forming: cooling and curing the sheared liquid drops by using a cooling medium after the sheared liquid drops are cooled, so as to form microbead particles; and (4) product collection: carrying out solid-liquid separation on the microbead particles and a cooling medium, filtering, and collecting to obtain the microbeads. According to the microbead production process disclosed by the invention, continuous production of double-layer microbeads can be quickly realized, accurate regulation and control of inner layers of the double-layer microbeads are realized, and the particle sizes of the microbeads are quickly and accurately controlled; and meanwhile, the production conversion of single-layer microbeads and double-layer microbeads can be quickly realized.

The present invention provides an ammonia removal system for a urea granulation tower, which includes a hydrogen chloride gas spray head for spraying hydrogen chloride gas below the dust removal cloth bag of the urea granulation tower. During operation, on the one hand, the hydrogen chloride gas can act as a reactant to react with ammonia mixed in the air to form ammonium chloride, and the formed ammonium chloride is intercepted by the dust removal cloth bag, thereby achieving the purpose of ammonia removal; on the other hand, the hydrogen chloride gas can act as a catalyst to cause the tiny urea particles carried in the air to react with the moisture in the air under its catalytic action to form carbon dioxide and ammonia, thereby reducing the air humidity and solving the problem of the dust removal cloth bag being blocked. This ammonia removal system can not only achieve the purpose of ammonia removal, but also reduce the air humidity to solve the problem of the dust removal cloth bag being blocked, so it can be used in combination with the dust removal cloth bag.

According to the mixed phase ice crystal particle ground generation and icing experiment device and method, a water spray head generates a water drop particle swarm, an ice crystal particle generation device generates an ice crystal particle swarm, the water drop particle swarm and the ice crystal particle swarm are mixed in a controllable proportion to form an ice-water mixed phase, and then a mixed phase icing experiment can be achieved. The experimental device comprises an air duct system, a water drop atomization generation system, an ice crystal particle generation system, an impact surface system and a measurement system, the air duct system comprises an axial flow fan, an air duct and an experiment cavity; the impact surface system comprises an impact surface assembly, the water drop atomization generation system and the ice crystal particle generation system are used for providing water drops and ice crystals respectively, the axial flow fan provides high-speed airflow, the water drops and the ice crystals are conveyed through the air duct to impact the impact surface assembly at a high speed, and an impact icing experiment of a mixed phase is achieved; the measuring system is used for measuring the air speed, temperature and humidity in the air duct and measuring the thickness and temperature of an ice layer of the impact surface assembly.

The invention provides a liquid drop continuous generation device which comprises a first flow channel and a second flow channel, the first flow channel and the second flow channel comprise first positions which are tightly attached to each other, and each first position comprises a through hole communicating with the first flow channel and the second flow channel; the first flow channel and the second flow channel are used for introducing a first liquid and a second liquid respectively; the special ultrasonic device can act on the first liquid in the first flow channel, when the special ultrasonic device is driven in a first power period, an acoustic beam current facing the through hole is generated in the first liquid, the acoustic beam current enters the second liquid through the through hole, and liquid drops formed by the first liquid are formed in the second liquid. The invention also correspondingly provides a method for continuously generating liquid drops. The liquid drop generation mode is more flexible, the controllability is higher, and the cost is lower.

Disclosed in the present invention is a preparation method for a water treatment agent produced from red mud of an aluminum factory, comprising: first, dealkalizing red mud slurry by means of a filter pressing process; then drying same and crushing same into powder; adding to a stirring tank the dry red mud powder to be heated and dissolved, and adding an excess of hydrochloric acid to obtain a chlorine salt material; then adding alkali to the chlorine salt material to adjust the pH value to weak acid; and finally spray-drying the water treatment agent to obtain a powdery preparation. The water treatment agent prepared in the present invention has excellent effects of flocculation and COD and ammonia nitrogen removal, and can effectively solve the problem that red mud waste residues stacked in aluminum factories cause environment pollution.

The invention belongs to the technical field of lithium ion batteries, and particularly relates to a lithium nickel cobalt aluminate / carbon composite positive electrode material with a core-shell structure and a spray drying process thereof, the lithium nickel cobalt aluminate / carbon composite positive electrode material comprises the following raw materials: a lithium source, an iron source, a phosphorus source, a carbon source and a solvent; the method specifically comprises the following steps: S1, dissolving a lithium source, an iron source, a phosphorus source and a carbon source in a solvent, mixing according to a stoichiometric ratio, adjusting the pH value by using ammonia water or citric acid, and adding a binder to adjust the viscosity to obtain a precursor solution; s2, atomizing the precursor solution into tiny liquid drops by a centrifugal or pressure type spray dryer through a nozzle or a centrifugal disc, and staying the liquid drops in a tower for 4-10 seconds to obtain a dried microsphere precursor; s3, presintering the dried microsphere precursor in an inert atmosphere at 300-400 DEG C through a firing device, and removing volatile components; and S4, cooling the pre-sintered and dried microsphere precursor, and calcining in the firing device again to form crystals.

The invention discloses a multistage intelligent adjustable rotational flow atomization granulation system and device, and belongs to the technical field of atomization granulation, the multistage intelligent adjustable rotational flow atomization granulation system comprises a first end cover and a second end cover, a roller is arranged between the first end cover and the second end cover, and spiral conveying blades are arranged on the inner wall of the roller; the mixing head is fixed to the first end cover, a mixing chamber is arranged in the mixing head, and multiple first spraying holes are circumferentially distributed in the end face; the liquid conveying pipe extends to the material mixing chamber along the axis of the gas conveying pipe, a plurality of nozzles are arranged at the tail end of the liquid conveying pipe, and the spraying direction of the nozzles is perpendicular to the gas conveying direction of the gas conveying pipe; and the sleeve is sleeved with the infusion tube and is provided with a spiral guide vane, so that the airflow is accelerated into a high-speed spiral shape in the contraction channel. Feed liquid and air flow are vertically collided and sheared, so that the turbulence mixing strength is enhanced, and the atomization uniformity is improved; the adjusting assembly switches the nozzles of different specifications through the rotating shell, and multi-stage crushing particle size adjustment is achieved.

The invention relates to the technical field of high polymer materials, and particularly discloses a production process of spherical wax micropowder, which comprises the following steps: melting solid wax into a wax melt, and preserving at a constant temperature in an environment which is at least 20 DEG C higher than the melting point of the wax; the wax melt and hot water are mixed according to the flow ratio of 1: (10-20) and then sprayed out to form mist spray, the mist spray enters mist spray pool water with the temperature of the wax melting point + / -5 DEG C, and wax liquid drops in the mist spray are subjected to condensation polymerization in the mist spray pool water to form spherical wax melt; the spherical wax melt gradually rises into cooling water flow in the water of the spraying pool, the temperature of the cooling water flow is 10-20 DEG C lower than the wax melting point, the spherical wax melt flows in the cooling water flow and is cooled, the spherical wax melt is separated from the cooling water flow, and dewatering and drying are conducted to obtain the spherical wax micro powder. The process can improve the sphericity and particle size uniformity of the wax micro powder.

The utility model provides a sodium ion battery positive electrode material processing device, and belongs to the technical field of motor active material manufacturing. Comprising a dispersing tank, a cavity and a material collecting bin, the dispersing tank is connected with a material conveying pipe, a spray head is arranged at the tail end of the material conveying pipe and located in the cavity, the cavity is connected with a vacuumizing pipe, a crawler belt is arranged below the spray head, a heating plate and a cooling plate are arranged in a crawler belt loop, the heating plate is located in the crawler belt loop, and the cooling plate is arranged close to the tail end of the crawler belt. The outlet of the cavity is connected with a collecting bin. The device is used for raw material treatment of the battery positive electrode material, and has the advantages of high stability, uniform heating, stable material performance, capability of realizing an atomization granulation effect, easiness in industrialization and the like.

The invention relates to the technical field of atomizer equipment, and discloses a micron-sized solid ceramic powder spray granulator which comprises a base support, a drying tower body is fixedly mounted at the top end of the base support, an output pipeline is fixedly mounted at the bottom end of the drying tower body, and a mounting support is arranged at the top end of the drying tower body. And an atomizer is fixedly mounted in the mounting bracket. According to the micron-sized solid ceramic powder spray granulator, an atomizer and a structure on the atomizer are arranged, when the atomizer does not act, along with the loss of gas in an inner cavity of an inner runner pipe, under the elastic force action of a second elastic piece, a linkage sleeve piece is forced to move downwards, and pressure is applied to the side face of an elastic ring again; the inner runner pipe is driven to move upwards to extrude the third elastic piece, and meanwhile, the outer surface of the inner runner pipe and the inner wall of the outer runner pipe are attached to each other to extrude out the liquid material remaining in the inner runner pipe.

The invention relates to the technical field of ceramic product production and manufacturing equipment and a preparation process, in particular to a spray granulation process which comprises the following steps: preparing zirconium oxide slurry with the solid content of 90%, conveying the zirconium oxide slurry to a nozzle through a pipeline, and enabling the slurry to meet airflow at the nozzle and be atomized into tiny liquid drops; atomized liquid drops make contact with hot airflow for drying, the airflow temperature is controlled by a temperature control system to gradually rise from the inlet section to the outlet section of the main tower, and an airflow system adjusts the airflow speed and the airflow direction; the particles with the particle size larger than or equal to 40 micrometers fall to a discharging port in the bottom of the main tower under the action of strong airflow, and the particle size is lt; particles with the particle size of 40 microns flow to a brown air opening under the action of relatively weak air flow; the dried large particles are guided out from a discharge hole in the bottom of the main tower through a strong airflow regulator to be collected, and the dried small particles are collected through a connecting pipeline and a cyclone separator through an air inlet; the large particles are directly stored or subsequently processed, and the small particles are further processed or sub-packaged. Precise classified collection is achieved, and the granulation quality and the production efficiency are improved.

To provide a flow path structure capable of promoting mixing of two fluids, a flow path structure unit, and a production method of a lipid particle.SOLUTION: A flow path structure of an embodiment includes a first flow path, a second flow path, and a third flow path. The second flow path is connected to the first flow path, and the third flow path is connected to the first flow path and the second flow path. When a distance between a top surface and a bottom surface of the flow path is defined as a flow path depth, the flow path depth of the second flow path in an opening through which the first flow path is connected with the second flow path is not constant, and the maximum value of the flow path depth of the second flow path in the opening is smaller than the flow path depth of the first flow path.SELECTED DRAWING: Figure 1

The invention discloses a small-particle compound fertilizer, a production process and equipment thereof. The small-particle compound fertilizer is processed by adopting a high-tower granulation process, and the particle size is 1.2-1.8 mm; according to the production process of the small-particle compound fertilizer, the diameter of a spray hole in a granulation spray head is in a range of 1.2-1.8 mm, and the rotation speed of the granulation spray head is not less than 450rpm; the small-particle compound fertilizer production equipment comprises a high tower main body, a liquid supply mixer, a granulation spray head, an air inlet and a collector, and further comprises an air injection assembly which is annular and coaxially arranged on the periphery of the granulation spray head; the air injection assembly is fixed on the bottom surface of a top partition plate in the high tower main body; and the air injection assembly downwards blows compound fertilizer slurry liquid drops thrown out by the granulation spray head in an obliquely downward manner. The compound fertilizer is small in particle, can be rapidly dissolved in water, is high in fertilizer efficiency and can be fully absorbed and utilized by crops.

The invention relates to a spray drying system and a secondary battery production line, and the spray drying system comprises a feeding device which is used for supplying slurry; the at least two drying chambers comprise a first drying chamber and a second drying chamber; the first drying chamber is used for performing spray drying on the slurry according to a first parameter value of the working parameters to generate first particles with a first particle size; the second drying chamber is used for performing spray drying on the slurry according to a second parameter value of the working parameter to generate second particles with a second particle size; the first parameter value is different from the second parameter value, and the first particle size is different from the second particle size; and the material collecting device is used for collecting and mixing the first particles and the second particles. According to the spray drying system and the secondary battery production line provided by the invention, spray drying and grading production procedures are integrated, so that the production process can be simplified, the production procedures are reduced, and the production efficiency is improved.

The group of inventions relates to the chemical industry, and more particularly to the production of nitrogen fertilizers, and can be used for producing granules of fertilizers such as, inter alia, ammonium nitrate, urea and ammonium nitrate-phosphate fertilizers, by prilling. What is proposed is a method for forming nitrogen fertilizer granules by prilling using a closed air circulation loop, in which cooling air is fed into the lower part of a prilling tower, a nitrogen fertilizer melt is sprayed into the upper part of the prilling tower, and granules are removed from the lower part of the tower. By means of at least one closed circulation loop, air is removed from the upper part of the prilling tower for preparation by purification and cooling and is returned to the lower part of the prilling tower as cooling air, wherein before being returned to the prilling tower, at least a portion of the air is sent for additional preparation by aftercooling, with the separation and removal of condensate and subsequent warming of the air. Also proposed is an apparatus for carrying out the claimed method. The technical result of the group of inventions consists in increasing the efficiency of a prilling process entailing a closed loop for the circulation of cooling air by improving the quality of the fertilizer produced, increasing operational reliability and reducing the overall dimensions of the equipment used, while maintaining a complete absence of prilling process emissions and obviating the need for the inspiration of external air.

The utility model discloses a spray granulation system, comprising: a stirring device for stirring materials, the stirring device being provided with a first discharge pipe; the screening device is connected with the first discharging pipe, the screening device is used for screening the materials, and the screening device is provided with a second discharging pipe; the storage tank is connected with the second discharging pipe, the storage tank is used for temporarily storing materials, the storage tank is provided with a sensor, the sensor is used for detecting the condition of the materials in the storage tank, the storage tank is provided with a third discharging pipe, the third discharging pipe is provided with a first discharging pump, and the first discharging pump is connected with the sensor; and the spray granulation device is connected with the third discharge pipe, and the spray granulation device is provided with a first discharge pipe.

The ceramic granules are configured such that: (1) the average packing ratio is 25-60 vol%, the average disintegration strength is 0.01-0.60 MPa, and the ratio of the in-granule defect diameter to the granule diameter is 0.30 or less; or (2) the average disintegration strength is 0.01-0.60 MPa, the ratio of the in-granule defect diameter to the granule diameter is 0.30 or less, and the flow function in a ceramic granular layer formed by filling the ceramic granules and compacting the ceramic granules at a vertical stress (load) of 1-90 kPa is 3.0 or more.

The invention discloses spray granulation equipment and a spray granulation method, and relates to the technical field of spray granulation. The device comprises a drying box, the drying box internally comprises a hot air cavity and a processing cavity, an air heater is installed in the hot air cavity, a filter plate is installed between the hot air cavity and the processing cavity, and a discharging opening is formed in the processing cavity; and the storage tank is provided with a discharging pipe communicating with the processing cavity, and a stirring piece is installed in the storage tank. When the device is used, air is blown into the processing cavity through the air heater, raw materials are dried through hot air, particles formed by the raw materials can be discharged through a discharging port, and the blown-out hot air moves in the processing cavity, gradually moves into a transfer pipe and enters an interlayer of a storage tank through the transfer pipe; and the storage tank is preheated through waste heat of tail gas, the utilization rate of the tail gas is increased, and then the practicability of the device is improved.

The utility model provides a device for preparing nano-carbon urea, which relates to the technical field of nano-carbon urea and comprises a rotary stirring frame, a loading disc is fixedly mounted in the middle of the rotary stirring frame, a plurality of elastic ejector blocks are arranged in the loading disc, a stainless iron sheet is fixedly mounted at one end of each elastic ejector block, and a plurality of elastic ejector blocks are arranged at the other end of each elastic ejector block. And an electromagnetic suction assembly is arranged on one side of the stainless iron sheet. The nano-carbon urea preparation device has the advantages that the stirring structure is additionally arranged in the nano-carbon urea preparation structure to mix urea particles and nano-carbon sol, generation of the nano-carbon urea is accelerated, the carrying structure is arranged in the middle of the stirring structure, the intermittent pushing structure controlled electromagnetically is arranged in the carrying structure, and the stirring structure is arranged in the middle of the stirring structure to accelerate generation of the nano-carbon urea. Nano-carbon urea particles and urea particles are separated by utilizing the loading structure, and the mixed urea particles are jacked up to participate in mixing again, so that nano-carbon urea can be effectively screened, and the preparation quality and efficiency of the nano-carbon urea are improved.

The compound fertilizer melt granulation device with a multi-layer structure disclosed by the present invention includes a hierarchical feeding mechanism and a multi-layer rotating granulation spray disc which are connected to each other; the multi-layer rotating granulation spray disc includes an annular upper end plate and a lower end plate, and a number of equally distributed indexing half-tubes with the same structure are vertically arranged between the upper end plate and the lower end plate. A rectangular spray opening is formed by a gap between every two indexing half-tubes. A number of intermediate partition plates are also horizontally arranged between the upper end plate and the lower end plate, and a number of indexing half-tubes are evenly distributed at the circumferential positions of a number of intermediate partition plates; a first through hole is opened at the center of each intermediate partition plate, and the upper end plate is connected to the hierarchical feeding mechanism. This device can increase the output of compound fertilizer melt granulation according to actual production requirements.

The utility model relates to a pressure spray granulator for preparing dispersible granules. The pressure spray granulator comprises a spray chamber, a spray head and a screening assembly, the spray head is arranged at the top of the spraying chamber and is connected to a pressure source; the screening assembly comprises a plurality of screening plates, and the multiple screening plates are arranged at intervals in the height direction of the spraying chamber; the filtering holes of the screening plate are gradually reduced from high to low in the height direction of the spraying chamber; a plurality of discharging ports are formed in the bottom of the spraying chamber in a penetrating mode, the discharging ports are arranged at intervals in the height direction of the spraying chamber, and the discharging ports are used for allowing granules to pass through. The device has the effect of classifying the granules according to the particle size while completing granulation.

This invention provides mitomycin freeze-dried powder with excellent solubility and stability, as well as equipment for preparing the same. [Solution] In step 1, the raw materials are sieved through a 200-mesh sieve in preparation for use; in step 2, approximately 60% of the prescribed amount of sterile water for injection is weighed into a liquid mixing tank and the sterile water for injection is cooled to 1-5°C; in step 3, the prescribed amount of mannitol powder is added to the liquid mixing tank; in step 4, the prescribed amount of mitomycin is dispersed in an isolator with an appropriate amount of sterile water for injection and then added to the liquid mixing tank, the liquid mixing tank is started and stirred until completely dissolved; in step 5, the sterile water for injection is replenished to the full volume, the temperature of the drug solution is maintained at 1-5°C and stirred continuously; and in step 6, the temperature of the liquid mixing tank is maintained at -2-2°C, and it is filtered online and filled.

The invention relates to the technical field of compound fertilizer production equipment, discloses a centrifugal granulation tower for producing glycoside-containing compound fertilizer, and aims at solving the technical problems that existing granulation equipment is uneven in granularity and poor in product quality. The granulation tower comprises a tower body, a centrifugal production mechanism, a feeding pipe, a cooling fan, an air inlet shutter and a material receiving disc, the centrifugal production mechanism is a core component, is composed of a cross-shaped supporting frame, a centrifugal material mixing assembly, a centrifugal material discharging assembly, a driving assembly, a transmission assembly and a servo motor, and can achieve full mixing and precise centrifugal granulation of raw materials. The cooling fan is matched with the adjustable air inlet shutter, so that the particles are quickly and uniformly cooled; the material receiving disc is used for collecting the cooled particles; according to the invention, through cooperation of all the parts, it is ensured that glycoside-containing compound fertilizer particles are regular and uniform in component, particle caking damage is reduced, different productivity and granularity requirements are met, production efficiency and product quality are improved, and the industrial application prospect is good.

The utility model discloses an organic inorganic compound fertilizer sprays slurry granulation drying all -in -one, including work table, granulation drying structure, sprays slurry structure and feeding structure, the granulation drying structure is located on the work table, the sprays slurry structure is located on the work table, the feeding structure is located on the work table, the granulation drying structure includes rotary base, rotary bearing, rotating drum, gear no.

A composition contains silicon nanoparticles that have hindered piperidine derivative free radical scavengers on the surfaces of the silicon nanoparticles. A process for making silicon nanoparticles with hindered piperidine derivative free radical scavengers on the surface of the silicon nanoparticle, the process includes producing silicon nanoparticles using a VHFLPP process that collects silicon nanoparticles in a capture fluid as they are made and wherein hindered piperidine derivative free radical scavengers are provided in the capture fluid prior to, during and / or after collecting silicon nanoparticles so that the silicon nanoparticles and hindered piperidine derivative free radical scavengers are present in the capture fluid together.

To provide a method for producing granulated powder in which the surface of each of the multiple magnetic particles contained in the granulated powder can be easily coated with a resin composition. [Solution] The raw materials for the granulated powder (30) are a slurry 9 containing a magnet powder consisting of multiple magnet particles 3, a resin composition 5, and an organic solvent. The magnet powder is an alloy containing Sm, Fe, and N. The resin composition 5 contains a thermosetting resin. By spraying the slurry 9, multiple fine particles 10 made of the slurry 9 are formed. When a magnetic field H is generated by the coil 4, the multiple fine particles 10 are supplied to the inside of the coil 4 by the magnetic field H. Inside the coil 4, the multiple fine particles 10 aggregate due to the magnetic field H, forming multiple aggregates 20. By heating the multiple aggregates 20, the organic solvent is removed from the multiple aggregates 20, and the multiple aggregates 20 become granulated powder (30).

The present application provides a digital PCR detection apparatus, a digital PCR quantitative detection method, a multi-volume digital PCR quantitative analysis method, a digital PCR detection method, a nucleic acid detection microsphere, a preparation method of the nucleic acid detection microsphere, a kit, and a high-throughput nucleic acid detection method.

This invention discloses a high-temperature molten slag granulation system coupled with cyclone heat exchange and water mist, including a granulation chamber, a high-temperature molten slag transition device disposed at the top of the granulation chamber, a granulation disc disposed inside the granulation chamber and below the high-temperature molten slag transition device, and a transmission shaft and motor for driving the rotation of the granulation disc. A slag outlet is provided at the bottom of the granulation chamber, and multiple spray nozzles are evenly arranged circumferentially on the upper part of the inner side wall of the granulation chamber. At least four tangential high-pressure air inlets are provided circumferentially below the spray nozzles on the side wall of the granulation chamber, each high-pressure air inlet being connected to a high-pressure blower. An arc-shaped guide baffle is provided on the inner side of each high-pressure air inlet. The system of this invention has a compact structure and no additional moving parts. It can adapt to different working conditions such as blast furnace slag and steel slag by only adjusting the air pressure and water volume, and has broad industrial application value.

The present invention relates to a reactor system (1) and method for manufacturing and / or processing particles (P) in a vibrating process gas stream.