69results about How to "Achieve purification" patented technology

The invention relates to the technical field of bacterial cellulose preparation, in particular to a composite flora for producing bacterial cellulose and a preparation method thereof, and the preparation method comprises the following steps: screening gluconobacter oxydans, obtaining culture medium preparation materials and preparation tools, preparing a slant culture medium set, preparing an enriched liquid culture medium set, and preparing composite flora mixed inoculation liquid. The method comprises the following steps: preparing a waste tobacco leaf leaching solution, extracting a proportional leaching solution from the waste tobacco leaf leaching solution according to a preset proportion, obtaining a mixed fermentation culture medium based on a preparation tool and the proportional leaching solution, and carrying out inoculation operation on a composite flora mixed inoculation solution by using the mixed fermentation culture medium to obtain a dry cellulose membrane; calculating the yield of the bacterial cellulose based on the dry cellulose membrane, and completing the preparation of the composite flora for producing the bacterial cellulose based on the yield of the bacterial cellulose. The method can be used for scientifically, efficiently and stably preparing the composite flora.

The utility model provides a waste ink adsorption and purification device of a printer, which comprises purification mechanisms mounted on two sides of a printing head, each purification mechanism comprises a main shell fixedly connected with the printing head, a mounting frame is fixedly mounted on the inner side of each main shell, and a ventilation slot is formed in each mounting frame. A plurality of groups of negative pressure fans are fixedly mounted on the top side of the ventilation slot at equal intervals through fasteners; the inner side of the ventilation groove is connected with first adsorption sponge. Through the cooperation of the negative pressure fan and the mounting frame, waste ink splashed during printing of the printing head can be sucked in through the first opening and adsorbed to the first adsorption sponge, and therefore the splashed waste ink is purified; through cooperation of the bolts, the connecting base and the fixing base, the drawer I can be conveniently disassembled and assembled on the main shell, so that the adsorption sponge I located in the drawer I can be conveniently replaced, and the situation that purification fails due to the fact that the adsorption sponge I cannot continue adsorption after adsorbing excessive waste ink is prevented.

The utility model discloses a kind of glycolide crude product purification equipment, including spherical reaction kettle and reaction kettle base;The spherical reaction kettle is rotatably connected in the reaction kettle base;The stirring assembly of stirring material is provided in the spherical reaction kettle interior;The spherical reaction kettle includes upper half, the liquid inlet for liquid inlet is opened in the upper half top, and the first liquid discharge port for liquid discharge is opened in side wall.The spherical reaction kettle further includes lower half, the lower half is located in the reaction kettle base inboard, the lower half and the upper half butt joint, connect by fixing part.The stirring assembly includes second transmission shaft and stirring paddle, the upper end of the second transmission shaft is connected drive source by penetrating the upper half, and lower end is located in the spherical reaction kettle interior and connects the stirring paddle.The utility model aims at overcoming existing defects and provides a kind of glycolide crude product purification equipment, simple structure, easy operation, and guarantee cleaning quality.

The invention discloses a waste gas purification tower for a carbon capture system, which relates to the technical field of waste gas purification and comprises a temperature exchange device, a support device, a rotary spraying device and a capture device. Waste gas enters from the upper end of the temperature exchange lining, then enters the trapping device from the lower end of the temperature exchange lining and then enters the rotary spraying device from the bottom of the trapping device to be purified, and the purified waste gas enters the space between the temperature exchange shell and the temperature exchange lining from the upper end of the rotary spraying device. And at the moment, the purified waste gas exchanges heat with the waste gas in the temperature exchange lining, so that the compactness of the whole structure is improved. In the rotating process of the dust suction rotary drum, the dust suction rotary drum drives a capturing main gear to rotate through a capturing rotating shaft, the capturing main gear drives a rotary spraying gear ring to rotate through a rotary spraying auxiliary gear, the rotary spraying gear ring drives a rotary spraying outer drum to rotate on the periphery of a rotary spraying lining, and at the moment, a rotary spraying base on the rotary spraying outer drum throws purification liquid out of rotary spraying holes; therefore, the harmful gas in the waste gas can be purified by the purifying liquid.

This invention provides a gas ion source preparation device for multi-form samples, comprising a multi-form sample introduction device, a first separation cold trap for separating water vapor, a second separation cold trap for separating carbon dioxide, a quantitative cold trap, and a collection cold trap. One end of the first separation cold trap is connected to the multi-form sample introduction device, the other end of the first separation cold trap is connected to one end of the second separation cold trap, the other end of the second separation cold trap is connected to one end of the quantitative cold trap, the other end of the quantitative cold trap is connected to one end of the collection cold trap, and the other end of the collection cold trap is connected to an ion source. The temperature of the first separation cold trap is lower than the boiling point of water vapor, and the temperature of the second separation cold trap is lower than the boiling point of carbon dioxide but higher than the boiling point of nitrogen. A tail gas outlet is connected between the collection cold trap and the quantitative cold trap. This invention combines low-temperature distillation and multi-form carbon redox technology to achieve the collection and purification of different forms of carbon in solid and gaseous samples.

This utility model discloses a comprehensive treatment system for zinc-containing waste generated in viscose fiber production, belonging to the field of waste treatment in viscose fiber production. The system includes a reaction tank, filter press, pretreatment device, filter, ion exchange resin column, and acid bath preparation tank, ensuring a comprehensive treatment pathway for zinc-containing waste. This facilitates the mixing of highly acidic, high-salt zinc-containing wastewater with zinc-containing sludge. The strong acidity of the wastewater allows for the acid leaching of zinc sulfide and zinc hydroxide in the sludge, simultaneously obtaining a zinc sulfate solution and recovering sulfate to prepare sodium sulfate and sulfuric acid. This reduces the salinity of the wastewater, thereby decreasing the amount of reagents used in treating zinc-containing wastewater, mitigating scaling risks, and reducing the load on subsequent biochemical systems.

The utility model discloses a kind of refining machine oil agent circulation systems for fiber production involve fiber production technical field, including refiner, oil agent circulation tank and membrane filtration device, the bottom of the refiner is provided with liquid collecting tank, and the circulating liquid of liquid collecting tank is connected with oil agent circulation tank, and oil agent circulation tank is connected with membrane filtration device and oiling device respectively, and the circulating liquid of oil agent outlet of membrane filtration device is connected with oil agent circulation tank, the refining machine oil agent circulation system for fiber production is also provided with external processor, liquid level transmitter is arranged in the oil agent circulation tank, and oil agent circulation pump is arranged in the liquid outlet of oil agent circulation tank, and solenoid valve I is arranged in the inlet of membrane filtration device;By optimizing oil agent process, improve fiber oiling rate uniformity, make fiber physical property more stable, product strength and elongation rate variation coefficient reduce, significantly improve product quality.Product quality improvement helps company to develop high-end market, improve product added value, enhance market competitiveness.

The invention relates to the technical field of sewage purification and treatment, in particular to a garden landscape sewage purification and circulation treatment device which comprises a main body shell, the main body shell is located in the center of garden landscape through a supporting table, a water inlet is formed in the outer side of the main body shell, and a water outlet is formed in the bottom end of the main body shell; the rotary filter cylinder unit comprises a first storage cylinder and a filter cylinder, and the self-cleaning unit comprises a cleaning disc, a cleaning brush and a cleaning scraper; a first connecting pipe communicated with the first storage cylinder is arranged on the outer side of the second storage cylinder, a first pump body is arranged on the outer side of the first connecting pipe, and a water drainage pipe is arranged at the bottom end of the second storage cylinder; the cleaning brush and the cleaning scraper are driven by the cleaning disc to continuously scrape and sweep the inner wall of the filter cartridge, so that automatic online cleaning is realized, frequent manual disassembly and cleaning are not needed, the maintenance cost and the labor intensity are reduced, and continuous water purification circulation is ensured.

The utility model is applicable to the technical field of respirators, and provides an intelligent air supply respirator with a detachable battery compartment. The fan is arranged on the shell, and the air outlet end of the fan communicates with the air outlet channel; the filter assembly is located at the air inlet end of the fan, the air detection assembly is arranged in the air outlet channel, the electric control assembly is arranged on the shell, and the electric control assembly comprises an electric control board, an alarm and a speed adjusting assembly, and the alarm and the speed adjusting assembly are electrically connected with the electric control board; and the battery compartment is detachably provided with a shell. Air in the air outlet channel is detected through the air detection assembly, when the air quality does not reach the standard, an alarm is given out through the alarm, the rotating speed of the draught fan is controlled by adjusting the speed adjusting set, the quality of filtered air is guaranteed, the intelligence of the respirator is improved, the battery bin can be taken down or fixed to the shell, and the respirator is convenient to use. And the battery compartment can be directly replaced without waiting for charging time, so that the endurance is improved.

The utility model discloses a crushing device for extracting ossein, which relates to the technical field of ossein extracting and crushing appliances and comprises a support and an aggregate collecting mechanism, a feeding hopper is arranged at the top of the support, a roller cavity is formed in the feeding hopper, a crushing mechanism is arranged in the roller cavity of the aggregate collecting mechanism, and a supporting plate is arranged in the middle of the support of the aggregate collecting mechanism. A screening mechanism is arranged at the top of the aggregate collecting mechanism supporting plate, and an aggregate collecting mechanism is correspondingly arranged below the screening mechanism of the aggregate collecting mechanism; according to the aggregate crushing and screening device, aggregate can be efficiently crushed conveniently through cooperative work of the crushing roller and the motor in the crushing mechanism, the crushed aggregate can be screened conveniently through cooperation of the filter plate and the vibration motor in the screening mechanism, and finally the problems that the aggregate which does not meet the granularity requirement is mixed into a qualified product and the material is prone to splashing are solved.

The invention discloses a recovery method of a catalyst containing platinum, silver, chromium, vanadium, molybdenum and aluminum, which comprises the following steps: uniformly mixing a waste catalyst, caustic alkali and iron powder, reacting at high temperature, cooling to obtain a melt, dissolving the melt, and filtering to obtain a first filter residue and a first filtrate; dissolving the first filter residue with nitric acid, and filtering to obtain platinum-containing waste filter residue and second filtrate; adding a sodium chloride solution into the second filtrate, and filtering to obtain silver chloride filter residues and third filtrate which contains chromic nitrate; adding a barium chloride solution into the third filtrate, reacting at room temperature, and filtering to obtain barium chromate solid filter residues and fourth filtrate; adjusting the pH value of the first filtrate to 7-8 by using an acid, reacting at room temperature, and filtering to obtain activated aluminum oxide filter residues and a fifth filtrate; adding ammonium chloride into the fifth filtrate, reacting at room temperature, and filtering to obtain ammonium vanadate filter residues and sixth filtrate; and adjusting the pH value of the sixth filtrate to be less than 1 by using sulfuric acid, reacting at room temperature, and filtering to obtain molybdic acid filter residues and a seventh filtrate.

The utility model provides an integrated gas purification intelligent thermal stability tester, which relates to the technical field of thermal stability test equipment, and comprises an intelligent thermal stability tester assembly, an adjusting assembly is arranged in the intelligent thermal stability tester assembly, a purification assembly is arranged on the intelligent thermal stability tester assembly, and the intelligent thermal stability tester assembly is connected with the adjusting assembly. The intelligent thermal stability tester assembly comprises a tester, the purification assembly comprises an exhaust pipe, one end of the exhaust pipe is connected with a purification box, and a suction fan is installed on the side face of the purification box. According to the device, the suction fan works, so that gas generated in the testing process is conveyed into the purification box through the exhaust pipe, benzene and the like in the gas can be adsorbed through the activated carbon box, and acid gas in the gas can be neutralized through the alkaline metal oxide adsorption plate; therefore, gas generated in the test can be adsorbed and neutralized, complex mixed gas generated in the test can be purified, and the gas is prevented from being directly discharged into the atmosphere.

This invention discloses a purification method for producing molybdenum-99 in a reactor using uranyl nitrate solution as nuclear fuel, relating to the field of radioisotope production technology. The method involves first adding an oxidant to the crude molybdenum-99 product solution produced by the solution reactor, oxidizing the crude molybdenum-99 product to MoO4. 2‑ The solution is then evaporated to dryness; a digestion solution is added to the evaporation residue to dissolve the impurities; a dissolving solution is added to the digested solid to dissolve the solid, which is then evaporated to dryness; finally, an alkaline solution is added to the evaporated solid to dissolve it, yielding a molybdenum-99 product solution that meets pharmacopoeia requirements. Compared to traditional methods for purifying molybdenum, this invention does not introduce new impurities, has a low heating temperature, low energy loss, is easy to operate in a hot chamber, and has a high impurity removal rate.

The application discloses an interactive method of a double-tracing safety production supervision system, relates to the technical field of safety production supervision systems, and discloses the interactive method of the double-tracing safety production supervision system, which integrates an AI identification and an artificial reporting double-source hidden danger data collection mechanism, cross-verify double-source hidden danger data, constructs a double-binding system of data tracing credentials and operation process tracing records, and combines visual interaction of a GIS map and multi-dimensional safety performance evaluation, effectively solves the technical problems of incomplete hidden danger coverage, difficult responsibility tracing, missing quantitative evaluation and insufficient terminal cooperation in a traditional supervision system, can realize comprehensive collection of double-source hidden danger data, cross-checking and purification of double-source hidden danger data, complete construction of a double-tracing mechanism, quantitative evaluation of safety performance and closed-loop management of a supervision process, and effectively improves the coverage range, tracing capability and decision-making efficiency of safety production supervision.

The utility model relates to a pet air purifier which comprises a machine head provided with a first cavity and a first air outlet communicated with the first cavity. The machine body is provided with a first air inlet, and the top end of the machine body is detachably connected with the bottom end of the machine head; the machine body comprises a transparent cover, a second cavity is formed in the inner side of the transparent cover, the second cavity communicates with the first cavity, and the second cavity communicates with the first air inlet; the air supply device is used for forming airflow; the filtering device is mounted in the first chamber; and the light-emitting device is configured to form light towards the bottom of the machine body. According to the pet air purifier, air purification can be achieved, peculiar smells in the air can be removed in multiple modes, light emitted by the light emitting device can improve the brightness of the interior of the machine body, a user can clearly observe whether or not pet hair and other sundries are accumulated on the interior filtering device through the transparent cover, the pet air purifier does not need to be repeatedly disassembled for inspection, and the practicability is high. And the machine head and the machine body can be conveniently detached for cleaning, so that the machine has the advantage of being more convenient to use.

The utility model discloses an automobile air conditioner air outlet structure relates to the technical field of automobile parts, including the air pipe, and the air outlet grid of air pipe air outlet end installation, air pipe air outlet end is equipped with the magnetic attraction connecting piece for the detachable air outlet grid, the support is installed in the air pipe, the support inner plug has the activated carbon honeycomb board for adsorbing air peculiar smell and the non -woven filter board for filtering air, and the non -woven filter board sets up in activated carbon honeycomb board's air outlet end, the groove on activated carbon honeycomb board installs the liquid storage bottle for storing air air fragrance liquid, the air duct adjusting part of rotatable is arranged in the air pipe, the air outlet grid is connected with the air pipe air outlet end through the magnetic attraction connecting piece, realizes quick dismounting with the magnetic attraction principle, compared with traditional buckle or screw fixed mode, it is more simple and convenient to operate, and the cleaning and maintenance efficiency of air outlet grid has been improved greatly, and the use cost of user has been reduced.

The application discloses a saline-alkali soil remediation system capable of reducing alkali and salt discharge and a laying method thereof, and relates to the technical field of saline-alkali soil remediation. The saline-alkali soil remediation system comprises a leaching device, a salt-preventing and separating structure, a negative pressure air extraction device and a salt discharge device. The salt-preventing and separating structure comprises a salt-preventing and separating layer which is embedded in a soil main body to separate the soil main body into a surface layer and a bottom layer arranged in the up-down direction. The negative pressure air extraction device is at least partially embedded in the surface layer. The salt discharge device comprises at least one salt discharge pipeline which is embedded in the surface layer and is in communication with the negative pressure air extraction device. The outer surface of the salt discharge pipeline is provided with a water absorption side which is formed by a part of the outer surface of the salt discharge pipeline facing the leaching device. A plurality of water absorption holes are arranged on the water absorption side, and each water absorption hole is provided with non-woven fabric for allowing leaching liquid to enter. The system can effectively remediate saline-alkali soil and stabilize the salt content of the saline-alkali soil at a treatment requirement level.

The utility model discloses a household humidifier which comprises a water tank, and a piston scraping plate used for cleaning the inner wall of the water tank is installed in the water tank. The top cover is arranged at the top of the water tank, an air inlet is formed in the side edge of the top cover, a storage box is fixedly connected to the interior of the top cover, a filter screen is arranged in the storage box in a lifting mode and used for filtering the air inlet, a turbofan is installed in the middle of the storage box, and a lamp strip is installed above the top cover and used as a night lamp. The humidifier has the beneficial effects that the humidifier not only has a humidifying function, but also integrates an air purifying function; the switches of the ultrasonic atomization head and the sterilization lamp are turned off, and the filter screen is pushed to slide out to block the air inlet, so that air purification can be realized, one machine has multiple purposes, and the practicability of the equipment is improved; the piston scraper is mounted in the water tank, so that the inner wall of the water tank can be cleaned conveniently, and particularly, the problem of cleaning dead angles at included angles between side walls and the bottom is solved.

The utility model belongs to the technical field of ultralow-temperature refrigeration, and particularly relates to an ultralow-temperature refrigeration system for a refrigeration house, which comprises a first refrigeration system, a second refrigeration system and a heat exchanger, the first refrigerant circularly flows in the first refrigerating system; the second refrigerating system comprises a second compressor, a second oil-gas separator and an evaporator which are sequentially connected end to end, and further comprises a second refrigerant which circularly flows in the second refrigerating system; the evaporator is located in the refrigeration house to cool the refrigeration house. Compared with the prior art, through the arrangement of the second refrigerating system, the technical problem that in the prior art, the temperature of the refrigeration house cannot be lowered to the ultralow temperature state is solved.

This application relates to the field of gas refining production, specifically disclosing a refining process for high-purity electronic-grade ammonia, comprising the following steps: S1, pretreatment: the raw material liquid ammonia is sequentially vaporized, filtered, and adsorbed to obtain crude ammonia; S2, ultrafiltration: the crude ammonia obtained in step S1 is ultrafiltered under conditions of pressure 0.4-0.8 MPa, temperature 25-45℃, and flow rate 1.5-3.5 m / s to obtain high-purity ammonia; S3, distillation and condensation liquefaction: the high-purity ammonia obtained in step S2 is sequentially distilled and condensed to obtain electronic-grade ammonia with a purity of 5N. The refining process of this application simultaneously meets the requirements of high purity, low cost, and high efficiency, improves the removal efficiency of trace impurities, and can obtain electronic-grade ammonia with a purity of 5N, solving the problems of insufficient purity, high impurity content, and high production costs in existing ammonia refining processes.

The invention discloses a method and an apparatus for preparing a purified 1, 4-butanediol composition. The method comprises the following steps: providing a dividing wall column; a 1, 4-butanediol composition to be purified is introduced into the dividing wall column, and the purified 1, 4-butanediol composition is prepared through the dividing wall column; the 1, 4-butanediol composition to be purified is prepared from gamma-butyrolactone, dimethyl succinate and 1, 4-butanediol. Effective separation and purification can be realized by only adopting one dividing wall column, so that not only is the equipment investment saved, but also the energy consumption is reduced.

The invention relates to the field of chemical industry, and discloses a method for synthesizing ethylene urea through cyclization dehydration of ethylenediamine carbamate, which comprises the following steps: 1) mixing ethylenediamine carbamate, 1, 3-dimethyl-2-imidazolinone and a tin-titanium-based composite catalyst for reaction; 2) centrifuging to obtain a solid phase which is the tin-titanium-based composite catalyst and ethylenediamine carbamate; the obtained liquid phase is 1, 3-dimethyl-2-imidazolinone, ethylene urea and water; 3) washing and filtering the solid phase to obtain a tin-titanium-based composite catalyst solid and an ethylenediamine carbamate aqueous solution, and drying the aqueous solution to obtain ethylenediamine carbamate; 4, the liquid phase is extracted and separated through diethyl ether, 1, 3-dimethyl-2-imidazolinone is obtained after diethyl ether is removed through evaporation, ethylene urea is obtained after ethylene urea and water are obtained in a water phase, and the method has the advantages of being high in atom economy, mild in reaction condition, low in energy consumption and high in yield.

The invention relates to the technical field of PCV2 purification. The invention provides a PCV2 purification method. The PCV2 purification method comprises the following steps: (1) detecting PCV2 in piglets, sows, boars and the environment before weaning; (2) respectively treating piglets, sows and boars before weaning according to detection results; and (3) disinfecting the environment according to a detection result. The PCV2 purification method described in the invention comprises the following steps: immunizing piglets, replacement pigs, boars and sows in a delivery room, partially removing the piglets, the replacement pigs, the boars and the sows, and disinfecting the environment, so as to finally complete the purification of the PCV2 in the delivery room in the intensive production process.

The application provides a zinc smelting recovery device for waste hard alloy and grinding material, which comprises a main crucible for containing zinc ingots and alloy materials to be treated, the alloy materials to be treated comprising waste hard alloy or grinding material; a heating device for heating the zinc ingots and the alloy materials to be treated to form a zinc metal melt and to heat the zinc liquid to volatilize; a mechanical stirring device with a stirring end extending into the zinc metal melt from above the main crucible, the mechanical stirring device being used for stirring the zinc metal melt to make light impurities in the alloy materials to be treated float on the surface of the zinc metal melt; and a secondary crucible arranged on the side of the main crucible, the inlet of the secondary crucible being communicated with the liquid surface of the zinc metal melt, and the light impurities on the surface of the zinc metal melt being introduced and collected into the secondary crucible under the stirring action of the mechanical stirring device. The application can realize the removal of impurities and purification of coated hard alloy block materials and hard alloy grinding powder materials with high impurity content.

This invention discloses a method for purifying toluene and its application. The method includes: catalytic conversion of toluene using a porous metal catalyst in an acidic environment below 60°C; and then mixing the converted liquid with an alkaline solution for separation to obtain purified toluene. This method converts non-aromatic hydrocarbons and C8 / C9 aromatic hydrocarbons in toluene into smaller molecules or acidic substances, which are then removed by alkaline washing. When toluene is used in nitration reactions, it reduces the content of fatty acids and benzoic acids during the nitration process, preventing non-aromatic hydrocarbons and C8 / C9 aromatic hydrocarbons from converting into carboxylic acid emulsion impurities during nitration, thus reducing the risk of emulsification in the nitration reaction.

The application provides a landfill treatment method and system, wherein the method comprises the following steps: arranging a well group on a landfill, the well group comprising a plurality of repair wells and a plurality of extraction wells, the repair wells and the extraction wells being used in pairs; establishing an aerobic aeration, liquid phase and gas phase extraction system connected with the repair wells and the extraction wells; formulating a landfill treatment plan according to detected parameters and corresponding indexes of the landfill, and treating the landfill by using the aerobic aeration, liquid phase and gas phase extraction system. The application adopts the aeration aerobic technology to accelerate the degradation of the stockpiled garbage, extracts and processes the landfill gas and the leachate, and samples and detects the soil and the underground water and injects the medicine for repair, so that the overall treatment of the landfill is realized. The technical scheme is not only suitable for the in-situ treatment of the stockpiled garbage without excavation and without leaving the site, but also suitable for the stabilization pretreatment of the stockpiled garbage in the ex-situ treatment.

The invention discloses a hot galvanizing method for an extra-high voltage transmission tower steel part, which belongs to the field of hot galvanizing and comprises the steps of hanging materials, pickling with hydrochloric acid to remove rust, cleaning with water, assisting in plating with a solvent, drying, purifying zinc liquid, hot-dip galvanizing and cooling, the zinc liquid purification step comprises slag removal pretreatment, zinc liquid temperature regulation and control, purification agent preparation, purification agent caging and liquid feeding, moving reaction for iron removal and scum removal, and the purification agent comprises industrial-grade metal aluminum wires and water-containing gas substances. The purifying agent is prepared from industrial-grade metal aluminum wires and water-containing gas production substances, wrapped by high-temperature-resistant glass wool cloth into a cluster, loaded into a cage frame made of titanium alloy round steel bars and reciprocatingly moved in the length direction of a zinc pot, so that iron-containing impurities in molten zinc fully react with the purifying agent in the cage frame, and a gray vermicular flocculent reaction product is generated; and then the dross is fished out, so that the purification of iron impurities in the zinc liquid is realized, the liquidity of the zinc liquid is improved, and the adhesive force of a zinc coating on a steel substrate is improved.

This invention relates to the field of bio-based oil refining technology, and proposes an industrial-grade refining apparatus for mixed oils. The apparatus includes a mixing cylinder equipped with a stirring assembly and a wall-scraping auxiliary mechanism, and a drive mechanism at the top to drive the stirring assembly in a three-dimensional composite lifting motion. A disc centrifuge is located directly below the mixing cylinder, with a guide pipe fixed at its top, communicating with the bottom of the mixing cylinder. The bottom of the guide pipe has symmetrically arranged spiral guide channels and horizontal discharge ports. A disc assembly is coaxially arranged inside the disc centrifuge, with the gap between adjacent discs decreasing sequentially from bottom to top. This technical solution solves the problems in existing degumming processes, such as the large speed difference between long pipe conveying and centrifugal feeding leading to secondary breakage of fragile bio-phospholipid flocs, easy pipe blockage due to cooling, easy blockage at the bottom of traditional evenly spaced discs (for coarse separation), low purity at the top (for fine separation), and low mixing efficiency of traditional stirring structures.

This invention discloses a spherical powder of tantalum-tungsten alloy and its preparation method and additive manufacturing method, belonging to the field of refractory metal material preparation technology. The preparation method includes: subjecting a homogeneous tantalum-tungsten alloy ingot to a three-stage hydrogenation treatment, sequentially holding at 0.01~0.04 MPa and 300~500℃ for 1~3 h, at 0.04~0.08 MPa and 900~1000℃ for 0.5~1 h, and at 0.02~0.05 MPa and 300~400℃ for 0.5~1.5 h. This segmented hydrogenation process controls the diffusion behavior of hydrogen in the alloy, achieving controlled embrittlement and avoiding over-hydrogenation. Further, multi-cycle crushing and dynamic sieving based on the target particle size range are performed to obtain hydride precursor powder, significantly reducing ineffective fine powder and improving the yield and production efficiency of the plasma spheroidization process. The resulting tantalum-tungsten alloy spherical powder has a sphericity of not less than 99%, an oxygen content of not more than 150 ppm, and a concentrated particle size distribution. It is suitable for additive manufacturing processes such as laser selective melting and electron beam selective melting, providing a reliable raw material for the forming of high-performance tantalum-tungsten alloy components.