383results about How to "Increased turbulence" patented technology

The invention discloses a jet aerator with low energy consumption and high oxygenation efficiency. The jet aerator comprises a Venturi tube and a quick-pass rhombic tube which are of a split structure, multi-rod supports are installed on the inner wall faces of round pipes at the two ends of the venturi pipe and support tail hook bionic stirring blades, a double-end reverse screw is arranged in the venturi pipe, one end of a quick-pass rhombic pipe is connected with the venturi pipe, the other end of the quick-pass rhombic pipe extends into an air suction chamber, and the upper portion of the air suction chamber is connected with an air supply pipe. The end, away from the Venturi tube, of the air suction chamber is connected with a mixing cavity tube, the mixing cavity tube is connected with the front end of a throat tube, a divergent wing-like blade set and a special-shaped taper hole plate are arranged in the mixing cavity tube, and a grid tray scattering nozzle is arranged in the throat tube; compared with a circular pipeline, the quick-passing rhombic pipe can provide higher water conveying capacity; the gradual change spiral body design on the double-end reverse screw can generate vortexes and turbulent flows, the turbulent flow intensity of water flow is improved, the mixing and diffusion capacity of the water flow is improved, and therefore the oxygenation efficiency is improved.

The invention belongs to the technical field of power station boiler waste heat recycling energy-saving equipment and relates to a plate-and-shell type coal economizer. The plate-and-shell type coal economizer comprises a corrugated plate heat exchange core body (1), a heat exchanger shell (2), a first and a second water inlet / outlet water tank (3, 3') and a first and a second exhaust gas inlet / outlet pipeline (4, 4'), wherein the corrugated plate heat exchange core body (1) is mounted in the heat exchanger shell (2), the first and second water inlet / outlet water tanks (3, 3') are respectively arranged at the upper and lower ends of the front side of the corrugated plate heat exchange core body (1), and the first and second exhaust gas inlet / outlet pipelines (4, 4') are respectively arranged at the upper and lower sides of the corrugated plate heat exchange core body (1). The plate-and-shell type coal economizer solves the problem that the length of a water passage needs to be increased to solve the problem of unapparent water heating due to the great difference between an exhaust gas density and a water density, and meanwhile, a corrugated passage at the exhaust gas side enables the exhaust gas flow turbulivity to be increased and the heat transfer efficiency to be improved; the blockage due to ash accumulation happens rarely, even if the ash is accumulated, the cleaning is easy to finish.

The invention discloses a fire-proof gas concentration detection device for a coal mine goaf, and relates to the technical field of environment detection, the fire-proof gas concentration detection device comprises a cylinder, the side wall of which is provided with an air inlet for introducing to-be-detected air; the air outlet cylinder is connected to the upper end of the cylinder body, fan blades are rotationally arranged in the air outlet cylinder, and rotation of the fan blades drives air to enter from the air inlet and flow through the whole device; the funnel-shaped dust collection cylinder is connected to the lower end of the cylinder body, and a plurality of separation blades are distributed on the inner circumference of the funnel-shaped dust collection cylinder and used for preliminarily filtering and blocking dust impurities in the air, so that the purified air enters the cylinder body to be detected; the dust collection box is connected to the bottom of the dust collection barrel; the plurality of sensor cylinders are uniformly distributed on the inner circumference of the cylinder body, a connecting seat is arranged in each sensor cylinder, and a gas semiconductor sensor is mounted on each connecting seat; the device can improve the precision of gas concentration detection, flexibly adapt to different working conditions and realize intelligent cleaning and maintenance.

The invention discloses a high-efficiency multiphase flow classification and separation integrated treatment method for argillaceous sandstone uranium ore. The crushed argillaceous sandstone uranium ore mixed material is sequentially subjected to hydraulic polishing and cluster breaking treatment, high-frequency linear vibration grading treatment, first-stage multiphase flow rotational flow grading treatment, deep low-frequency efficient ultrasonic scrubbing treatment, second-stage multiphase flow rotational flow grading treatment, jet flow uniform mixing treatment, micro-current activating treatment, hardening and tempering thickening and efficient squeezing solid-liquid separation treatment. According to the invention, mud and sand deep stripping and material fine grading separation of the crushed argillaceous sandstone uranium ore are realized, meanwhile, the fine-particle argillaceous material is subjected to efficient uniform mixing activation and deep efficient dehydration, and four core materials, namely a coarse sand material, a fine sand material, tailing dry slag and a high-concentration uranium ore leaching solution, are finally formed through continuous work; finally, efficient multi-phase flow fractional separation, concentration and purification treatment of the argillaceous sandstone uranium ore is achieved, residues of uranium elements in tailings are reduced, and the deep extraction rate of uranium ore resources is increased.

The invention discloses equipment and a method for preparing spray condensation microcapsules, and relates to the technical field of spray condensation microcapsule preparation, the equipment comprises a melting homogenizing kettle and a condensing tower, a spray head is arranged in the condensing tower, and a movable spray mechanism used for enabling the spray head to move circumferentially and swing back and forth at the same time is mounted on the condensing tower. Through the arrangement of the movable spraying mechanism, the spraying head can spray material liquid drops in the condensing tower in a back-and-forth swinging manner while moving circumferentially, so that the material liquid drops can be uniformly dispersed in a wider area and can be in contact with more cold air, local supercooling or superheating is avoided, and a more uniform cooling effect is obtained; meanwhile, through the matched arrangement of the spiral blades, cooling airflow can spirally flow and be uniformly distributed, the gas-liquid contact area is increased, the gas-liquid contact time is prolonged, gas-liquid exchange is more sufficient, finally, it can be ensured that each material liquid drop can be sufficiently cooled, and the embedding efficiency and the quality of microcapsules are effectively improved.

The invention provides a multi-cavity scramjet engine combustion chamber and a control method thereof. The combustion chamber is simple in structure, capable of adapting to different equivalence ratio ranges and different flight heights, low in resistance, high in combustion performance, low in thermal load of the wall face of the combustion chamber, convenient to maintain and capable of facilitating aircraft-engine integrated design. The combustion chamber comprises an isolation section, a first concave cavity group, a second concave cavity group, a third concave cavity group, an injection module and a combustion chamber expansion section, each concave cavity group is provided with two concave cavities which are oppositely arranged up and down; the isolation section is a first square tube and is connected with the first concave cavity group; the first concave cavity group is connected with the second group of concave cavities through a second square tube; the second group of concave cavities is connected with a third concave cavity group through a third square pipe; a combustion chamber expansion section is connected behind the third concave cavity group; the injection unit comprises a front injection device and a rear injection device; front injection devices are oppositely arranged on the upper wall surface and the lower wall surface of the second square pipe; rear injection devices are oppositely arranged on the upper and lower wall surfaces of the third square pipe.

The invention relates to the technical field of coolers, and provides a plate type cooler which comprises a box body and a spraying pipe and further comprises a plurality of heat exchange plates, the heat exchange plates are arranged in the box body at intervals and located below the spraying pipe, every two adjacent heat exchange plates are communicated, each heat exchange plate comprises a plate body, each plate body is provided with a cavity, and heat exchange water is introduced into each cavity; the multiple turbulent flow strips are arranged in the cavity at intervals, each turbulent flow strip is provided with a baffling part and a turbulent flow part, one end of each baffling part is arranged on the inner wall of the plate body, and each turbulent flow part is rotationally arranged at the other end of the corresponding baffling part; the control piece penetrates through one side of the plate body and extends out of the box body, the control piece is provided with a connecting end, the connecting end is arranged on the turbulent flow part, and the control piece is used for driving the turbulent flow part to rotate. By means of the technical scheme, the problems that in the prior art, due to the fact that channels between the plates of a traditional plate cooler are very narrow, the phenomenon of blockage after scaling is prone to occurring, and the heat exchange effect is affected are solved.

The invention discloses a treatment method of tantalum-niobium smelting wastewater, and relates to the technical field of tantalum-niobium smelting, and the treatment method specifically comprises the following steps: step 1, wastewater collection and primary treatment; step 2, physicochemical reaction and precipitation; step 3, biological treatment; and step 4, MBR membrane pool treatment. According to the treatment method of the tantalum-niobium smelting wastewater, uniform distribution of the coagulant or the precipitant in the precipitation tank can be ensured by intermittently adding the coagulant or the precipitant, and over-high or over-low local concentration caused by one-time large-amount adding is avoided, so that the coagulation effect is improved, impurities such as suspended solids, part of organic matters and sulfate in the wastewater are more effectively removed, and the treatment effect is improved. The input amount of the coagulant or the precipitator can be flexibly adjusted according to the water quality change and the treatment requirement in the sedimentation tank, so that the treatment process is more accurate and efficient; by accurately controlling the input amount of the coagulant or the precipitant, waste caused by excessive addition can be avoided, and the consumption of chemical agents is reduced.

The utility model relates to the technical field of shell-and-tube heat exchangers, and particularly discloses a multi-pipe-diameter multi-helix-angle multi-strand winding pipe type heat exchanger. Comprising a shell, a middle core cylinder installed in the shell and a spiral assembly spirally wound on the outer side of the middle core cylinder in the axial direction of the middle core cylinder. The spiral assembly comprises a plurality of spiral winding tube bundle layers which are spirally wound on the outer side of the middle core cylinder in sequence; each spiral winding tube bundle layer comprises a plurality of groups of spiral winding tubes wound on the outer side of the middle core cylinder, and the outer diameters of the spiral winding tubes in each spiral winding tube bundle layer are arranged at equal intervals; one or more fluid media are arranged in the spiral winding pipes on the same layer, and one or more wall thicknesses of the spiral winding pipes are arranged and correspond to the fluid media in a one-to-one mode. The heat exchange requirement and the winding strength requirement can be effectively met, meanwhile, the use efficiency of the material can be improved, and the production and processing cost can be reduced.

The invention discloses a micro-channel jet reactor. The micro-channel jet reactor comprises a sample introduction unit, a main mixing unit and a reaction unit which are sequentially communicated, the main mixing unit comprises a first inner pipe and a first outer pipe arranged outside the first inner pipe in a sleeving manner; a first annular space is formed between the first inner pipe and the first outer pipe; the sample introduction unit is communicated with the first inner pipe; a second sample inlet is formed in the first annular space, and a plurality of through holes are formed in the first inner pipe; the reaction unit comprises a second inner pipe and a second outer pipe arranged outside the second inner pipe in a sleeving manner; a second annular space is formed between the second inner pipe and the second outer pipe; the first inner pipe is communicated with the second inner pipe; during use, condensate is arranged in the second annular space. The reactor can effectively improve the mixing uniformity degree of reaction liquid, meanwhile, the reaction temperature is controlled, and the reaction rate and selectivity are ensured.

The utility model discloses a vehicle-mounted dehumidification protection air temperature type carbon dioxide gasification pry. The device comprises a protection box body and a gasifier located in the protection box body, the gasifier is provided with a gasification tube bundle, the front end of the gasification tube bundle is connected with the liquid separation side of a high-pressure common rail pipeline, and the rear end of the gasification tube bundle is connected with a carbon dioxide outlet pipeline through a collection box; the top of the protection box body is provided with a fan, the side face is provided with a shutter, and the bottom is provided with a dehumidification protection net and a folding protection bottom plate. And the fan adopts a blowing type or induced air type working mode, and adopts different air inlet modes according to different air humidity conditions, so that the gasification efficiency and stability are improved. According to the forced convection heat exchange principle, based on the bottom dehumidification device, the inertia separation technology of gas-liquid speed steering is utilized, two different operation states of the draught fan are adopted, and all-weather efficient, stable and safe high-pressure gasification operation is achieved by matching angle adjustment of the shutters on the two sides and air injection and entrainment to remove the influence of the boundary effect of the wall face.

The invention belongs to the technical field of heat exchange equipment, and particularly relates to a double-layer coil pipe type multi-stage heat exchanger and a heat exchange method thereof.The double-layer coil pipe type multi-stage heat exchanger comprises multiple heat exchanger bodies which are sequentially connected in series, each heat exchanger body comprises an outer cylinder, an inner cylinder, a first-layer coil pipe and a second-layer coil pipe, and each outer cylinder is arranged on the outer wall of the corresponding inner cylinder in a sleeving mode and provided with a fluid inlet and a fluid outlet; a fluid inlet and a fluid outlet which are communicated are formed in the inner cylinders, the fluid outlet of the upper-stage inner cylinder is communicated with the fluid inlet of the lower-stage inner cylinder, and the first-layer coil pipe and the second-layer coil pipe are both arranged in an annular cavity formed by the outer cylinder and the inner cylinders.

The utility model relates to the field of water conservancy and hydropower engineering, in particular to a novel combined energy dissipater. The novel combined energy dissipater comprises a combined step located on a drainage section, the combined step is formed by connecting a W-shaped step and a V-shaped step in the direction perpendicular to water flow, a trapezoidal energy dissipation pier is arranged on the horizontal plane of each step of the combined step, and the vertical face of each step of the combined step is folded inwards to form a concave angle. The bottom of the combined step is connected with the water inlet end of the stilling pool, at least one row of opposite impact type stilling piers are arranged in the stilling pool in the transverse direction, and a plurality of wedge-shaped tail piers are arranged at the tail of the stilling pool and combined with the tail sill. According to the novel combined energy dissipater, a more comprehensive energy dissipation facility is provided, single energy dissipation is converted into multi-element energy dissipation, the better energy dissipation effect is achieved, meanwhile, the work amount is reduced, and the combined energy dissipater is more convenient and simpler.

The invention relates to the technical field of electromagnetic heaters, and discloses a tank-type explosion-proof electromagnetic heater, comprising a tank body and an explosion-proof junction box installed on the outside of the tank body, wherein the tank body comprises, from outside to inside, a heat preservation layer, an electromagnetic coil and a heating cylinder, one end of the heating cylinder is fixedly connected with a feed port, the outside of the heat preservation layer is fixedly installed with a discharge port connected with the heating cylinder, and a plurality of conical plates are fixedly installed on the inner wall of the heating cylinder. The invention fixes a plurality of conical plates on the inner wall of the heating cylinder, and penetrates through a circular hole on one side of the conical plate, and the conical plate is directly connected to the inner wall of the heating cylinder. Through heat conduction, water flow contacting with the conical plate can also be heated, thereby increasing the heated area of ​​the fluid and rapidly raising the temperature of the fluid. Moreover, water passing through the circular hole can increase the flow rate of water and increase the degree of turbulence, thereby increasing the degree of mixing of the heated fluid with the low-temperature fluid and improving the heat transfer efficiency between the fluids. At the same time, in conjunction with stirring, the water flow in the heating cylinder can be heated more evenly.

The invention discloses a water-doped methanol fuel static mixer and a blending flow control module thereof, the static mixer realizes efficient mixing of methanol and water through a flow guide structure specially designed in the static mixer, and temperature, pressure and flow sensors are combined to monitor and adjust the concentration and supply quantity of fuel in real time. The mixer comprises a feed port, a discharge port, an internal multi-stage mixing structure, a flow control device and a monitoring instrument, through optimized geometric design and the multi-stage mixing structure, the stability of fuel concentration and the reliability of supply are ensured, the module can effectively solve the problems that methanol and water are not mixed uniformly, the concentration fluctuates, and the supply amount is not stable, and the mixing efficiency is improved. And stable supply of fuel is ensured, and the efficiency and safety of the fuel engine are improved. The system is suitable for the actual demand of ship fuel supply and has high automation and reliability.

The invention relates to the technical field of electromagnetic heaters, and discloses a tank type anti-explosion electromagnetic heater which comprises a tank body and an anti-explosion junction box installed on the outer side of the tank body, the tank body is provided with a heat preservation layer, an electromagnetic coil and a heating cylinder from outside to inside, and one end of the heating cylinder is fixedly communicated with a feeding port. A plurality of conical plates are fixedly installed on the inner wall of the heating cylinder, round holes are formed in one sides of the conical plates in a penetrating mode, the conical plates are directly connected with the inner wall of the heating cylinder, and through heat conduction, the conical plates can be heated, so that the heating cylinder is heated, and the heating efficiency is improved. Water flow in contact with the conical plate can be heated, the heating area of the fluid is increased, the temperature of the fluid is rapidly increased, the flowing speed of the water can be increased through the round holes, the turbulence degree is increased, the mixing degree of the heated fluid and the low-temperature fluid is increased, and the heat transfer efficiency between the fluids is improved; and water flow in the heating cylinder can be heated more uniformly.

The invention discloses a high-temperature turbulent environment particle ignition combustion testing device based on rotational flow flame stabilization, and belongs to the field of combustion testing. The burner is composed of an external rotational flow flame stabilizing device, a central premixing burner, an adjustable turbulence intensity pore plate and a central powder supply pipe. High-temperature and high-speed methane turbulence flames are generated through the central premixing burner, flame stabilization is conducted on the high-temperature and high-speed turbulence flames through the external rotational flow flame stabilization device, and the turbulence intensity of the flames is improved. A high-speed turbulent flow field and a high-temperature flue gas range are constructed through high-temperature and high-speed methane flames, combustion of aluminum particles in the turbulent flow field is achieved, and the combustion rule of the aluminum particles in a complex flow field is researched and tested. The turbulence intensity of high-temperature and high-speed turbulence flame is changed by changing the pore density and the pore diameter of the adjustable turbulence intensity pore plate, and the gas ratio in the central premixing combustor, so that simulation of different fuel gas oxygen enrichment degrees, turbulence intensities and flame temperatures is realized, and test analysis of different turbulence intensities on the combustion process of condensed phase particles is realized.

The invention relates to the technical field of heat exchangers, in particular to a shell-and-tube heat exchanger which comprises a shell, two end sockets at the two ends of the shell, two tube plates and a plurality of heat exchange tubes, a spring is arranged in each heat exchange tube, each spring is composed of a plurality of spring sections, and each spring section is large in outer diameter of the two ends and small in outer diameter of the middle. The two ends of the spring section abut against the inner wall of the heat exchange tube, and a gap is formed between the middle of the spring section and the inner wall of the heat exchange tube. According to the shell-and-tube heat exchanger, the purpose of improving the heat exchange efficiency is achieved through a simplified structure different from the prior art, high adaptability of the shell-and-tube heat exchanger to different working conditions is achieved through simple changes on the basis of an existing heat exchanger, high heat efficiency is achieved, and scaling is prevented.

The invention relates to the technical field of heat exchangers, and particularly discloses an energy-saving plate-fin heat exchanger which comprises a box body, a first fin plate group, a second fin plate group, a partition plate and a mounting table, a first edge sealing plate and a second edge sealing plate are arranged on the partition plate, a first driving mechanism is arranged on the first edge sealing plate, a second driving mechanism is arranged on the second edge sealing plate, and the mounting table is arranged on the box body. A waste heat utilization mechanism is arranged in the mounting table; the first driving mechanism can adjust the length of the heated channel, and the second driving mechanism can adjust the length of the heating channel, so that the flow velocity of the heated liquid and the heating liquid is increased, the turbulence degree of the heated liquid can be enhanced by increasing the flow velocity, a thermal boundary layer is destroyed, the heat transfer coefficient is increased, and the heating efficiency is improved. Therefore, the heating effect on the heated liquid is improved, the liquid outlet temperature of the heated liquid can be controlled more accurately, the waste heat utilization mechanism can further utilize waste heat carried by the heating liquid output from the box body, and the energy utilization rate is increased.

The utility model discloses a desulfurizing absorption tower synergistic device which comprises a multiphase flow reinforced rotary-cut turbulent flow unit arranged at the upper part in a tower body of a first-stage absorption tower, and the multiphase flow reinforced rotary-cut turbulent flow unit is arranged between a spraying layer and a flue gas inlet in the absorption tower; the multiphase flow reinforced rotary-cut turbulent flow unit comprises a horizontal mounting plate and a turbulent flow module arranged on the mounting plate; the turbulent flow module comprises an inner cylinder, a middle cylinder and an outer cylinder, the inner cylinder is sequentially sleeved with the middle cylinder and the outer cylinder, first blades are evenly distributed between the middle cylinder and the outer cylinder in the circumferential direction, and second blades are evenly distributed between the inner cylinder and the middle cylinder in the circumferential direction. Slurry sprayed by the spraying layer and rising flue gas are fully mixed under the action of the multiphase flow reinforced rotary-cut turbulent flow unit and then fall to the bottom of the absorption tower. The spirally rising flue gas can increase the gas-liquid contact area and improve the gas-liquid mass transfer rate, so that the desulfurization and dust removal efficiency is improved.

The invention discloses an energy-gathered ultrasonic scrubbing device and an argillaceous sandstone uranium deposit deep desliming system. The energy-gathered ultrasonic scrubbing device comprises a scrubbing barrel, a reverse stirring system, an energy-gathered ultrasonic vibrator and a slurry storage tank, the reverse stirring system is located in the scrubbing barrel and comprises a rotating shaft and at least four layers of reverse stirring blade structures arranged in the axial direction of the rotating shaft, each layer of reverse stirring blade structure comprises a plurality of blades arranged in the circumferential direction of the rotating shaft, and the inclination directions of the blades of every two adjacent layers of reverse stirring blade structures relative to the rotating shaft are opposite; the energy-gathered ultrasonic vibrator comprises an ultrasonic transduction device and an energy-gathered vibration conduction rod, the ultrasonic transduction device is fixed outside the scrubbing barrel, and the energy-gathered vibration conduction rod is connected with the ultrasonic transduction device and located inside the scrubbing barrel; and the discharge hole of the overflow slag discharge pipe of the scrubbing barrel directly guides the slurry to the slurry storage tank. According to the invention, mud-sand deep separation is realized under the combined action of multi-phase flow channel high-pressure scrubbing and low-frequency high-energy ultrasonic vibration, so that deep desliming of argillaceous sandstone uranium ore is realized.

The invention discloses an all-vanadium redox flow battery and cogeneration coupling waste heat recycling device, and relates to the technical field of waste heat recovery, the device comprises an electrolyte tank, a pair of fixing plates is fixedly arranged on the right side of the top surface of the electrolyte tank, a circulating pipe is inserted in the top end of each fixing plate in a penetrating manner, and an L-shaped telescopic pipe is fixedly arranged at the inner end of each circulating pipe; a heat exchange pipe is arranged in the electrolyte tank and forms a frame-shaped structure in a continuous bending manner; a pair of oval through holes is formed in the right side of the top face of the electrolyte box, the two ends of the heat exchange pipe penetrate through the oval through holes and extend to the outer side of the electrolyte box, and the two ends of the heat exchange pipe are fixedly connected with the inner ends of the L-shaped telescopic pipes in a penetrating mode. According to the invention, heat is more uniformly distributed in the whole heat exchange area, and local overheating or supercooling is avoided, so that the overall heat exchange performance is improved, the overall energy utilization efficiency is greatly improved, and deep coupling and optimized operation of an energy storage system and a combined heat and power generation system are promoted.

The utility model relates to a stirring device. The stirring device comprises: a stirring barrel for accommodating slurry; the stirring assembly comprises a dispersion disc arranged in the stirring barrel, and the dispersion disc can controllably rotate around the axis of the dispersion disc and revolve around a revolution axis; the self axis of the dispersion disc and the revolution axis are parallel and are not collinear; and the multiple turbulent flow strips are all arranged on the inner wall of the circumferential side of the stirring barrel in a protruding mode and distributed in the circumferential direction of the stirring barrel at intervals, and the circumferential direction of the stirring barrel is the direction around the revolution axis. Compared with the prior art, the stirring device avoids the need of driving the stirring barrel to rotate, on one hand, the sealing effect of the stirring barrel is improved, and the risk of slurry leakage is reduced; on the other hand, a relatively high vacuum degree can be kept in the stirring barrel, so that subsequent vacuum defoaming is facilitated; on the other hand, foreign matters generated by friction caused by relative sliding of the stirring barrel and the barrel cover are avoided, and slurry pollution is avoided.

The utility model relates to a glue-making reaction kettle, which comprises a kettle body provided with a driving part, a feed port and a discharge port; the coil pipe is spirally arranged on the periphery of the kettle body; the bottom pipes are arranged at the bottom end of the kettle body, the upper ends of the bottom pipes are communicated with the lower end of the coil pipe, and the lower ends of the bottom pipes are communicated with one another. The bottom pipes are arranged along the radial direction of the kettle body, and the plurality of bottom pipes are circumferentially and uniformly distributed relative to the axis of the kettle body. A medium inlet is formed in the upper end of the coil pipe. A bottom ring is arranged at the bottom end of the kettle body and located on the periphery of the discharging port, and the lower end of the bottom pipe is communicated with the bottom ring. The lower end of the bottom ring is provided with a medium outlet. The inner diameter of the coil pipe is variable. The coil pipe is formed by communicating a first connecting pipe and a second connecting pipe, and the inner diameters of the first connecting pipe and the second connecting pipe are different. The kettle body is provided with a supporting piece, and a pressure sensor is arranged on the supporting piece. The heat transfer area is larger, the turbulence degree of fluid in the coil pipe can be increased, and the heat transfer efficiency is higher.

The present invention provides a particle collision disturbance type gas lift loop reactor, the reactor comprising: a reactor body; a draft tube with a sieve plate; particles, which can be suspended inside the draft tube when the reactor is running; a gas distributor; a main liquid distributor; a gas inlet; a liquid inlet; a gas outlet; and a liquid outlet. Compared with the traditional gas lift loop reactor, due to the turbulent disturbance of particles and fluid inside the draft tube of the reactor, it helps to prevent gas phase aggregation and increase liquid phase back mixing, so that the gas and liquid phases in the reactor are fully mixed, the solubility of the gas phase in the liquid phase and the gas-liquid contact area are increased, the mass transfer rate and heat transfer rate between fluids are improved, and at the same time, the temperature distribution in the reactor is uniform, which is conducive to gas-liquid two-phase reaction or gas-liquid-solid three-phase reaction, and can be widely used in gas-liquid two-phase or gas-liquid-solid three-phase chemical reaction processes.

The invention belongs to the technical field of catalytic materials, and particularly relates to a macro-micro-nano integrated structured titanium silicalite molecular sieve catalyst as well as a preparation method and application thereof. According to the catalyst, SiC whiskers are grown on the surface of a 3D communicating hole SiC carrier in situ, TS-1 titanium silicalite molecular sieve precursor coating is combined with a steam crystal transformation process, and a TS-1 titanium silicalite molecular sieve coating with framework nickel doping and open mesopores is grown on the surface of the SiC whiskers, so that the loading capacity and catalytic activity of the titanium silicalite molecular sieve are effectively improved; meanwhile, excellent interface bonding force and a continuous heat conduction channel are provided through the SiC whiskers, and the heat transfer performance is enhanced. Compared with a traditional coating, the coating of the catalyst is rougher, and fluid turbulence and mass transfer efficiency are enhanced. According to the structured titanium silicalite molecular sieve catalyst, the utilization efficiency, the reaction rate and the selectivity of the catalyst are remarkably improved through coupling of macroscopic channels, micron pore channels and nano mesopores, and the structured titanium silicalite molecular sieve catalyst is particularly suitable for phenol hydroxylation reaction and olefin oxidation reaction.

The invention relates to the technical field of acrylonitrile catalyst production, in particular to a pulping device and a pulping process for acrylonitrile catalyst production, the pulping device comprises a homogenizing mechanism, the homogenizing mechanism comprises a tank body and further comprises a sealing cover arranged above the tank body and used for feeding, a stirring pulping assembly used for stirring slurry is arranged above the sealing cover, and the stirring pulping assembly is arranged above the tank body and used for stirring the slurry. The slurry extrusion device comprises a tank body and an extrusion box arranged below the tank body, an extrusion plate used for pushing slurry and a driving assembly used for driving the extrusion plate are arranged in the extrusion box, and the extrusion plate can extrude the slurry in the extrusion box; the extruded slurry can be discharged into the tank body through the first guide pipeline to realize circulating conveying of the slurry, so that one-way circulating operation by adopting a circulating pump is avoided, the maintenance frequency of each circulating part is reduced, synchronous circulation of the slurry on the left side and the right side of the tank body can be realized in a linkage manner, and the production efficiency is improved. And compared with a traditional circulating pump, one-way circulation is more efficient.

The present invention relates to a droplet-shaped fuel cell flow field structure, in which the flow field structure region is composed of a plurality of rows or columns of droplet-shaped flow field units alternately connected. Each droplet-shaped flow field unit includes a droplet-shaped support structure and flow channel structures on both sides of the support structure. The droplet-shaped flow field units are connected head to tail through a direct flow channel. The droplet-shaped fuel cell flow field structure of the present invention can increase the turbulence of the gas in the flow channel, has the advantages of good mass transfer effect and low pressure drop, and can significantly improve the performance of the fuel cell. At the same time, the droplet-shaped fuel cell flow field structure of the present invention is simple and easy to process, which is conducive to the large-scale production and application of fuel cells.

The invention provides a slurry pump front protective plate and a preparation method thereof, and belongs to the technical field of casting of rock breaking slurry pump front protective plates, and the preparation method comprises the following steps: step 1) preparing a prefabricated body; the prefabricated body is a ceramic prefabricated body, and the flowing speed of molten metal can be increased; (2) the prefabricated body is placed in a slurry pump front protection plate mold, then molten metal is poured into the slurry pump front protection plate mold, the slurry pump front protection plate mold is filled with the molten metal, meanwhile, the prefabricated body is wrapped, the molten metal is infiltrated into a set structure of the prefabricated body, and a front protection plate rough blank is obtained; wherein the molten metal is molten metal of a high-hardness wear-resistant alloy; and (3) carrying out heat treatment and processing on the rough blank of the front guard plate to obtain the front guard plate of the slurry pump. The ceramic preform of the spiral structure is high in hardness and strength, cracks cannot penetrate through the ceramic, meanwhile, metallurgical bonding exists between the high-hardness wear-resistant alloy matrix and the ceramic during pouring, the bonding force is large, crack propagation of high-hardness alloy cracking can be resisted, and the fracture toughness of the front protection plate is improved.

The invention relates to the field of heat pipe low-temperature economizers, in particular to a heat pipe type low-low-temperature economizer for a power plant, which comprises a water tank, a water inlet pipe and a water outlet pipe are respectively arranged on the water tank, rectangular plates are symmetrically arranged on one side of the water tank, a connecting plate is arranged between the rectangular plates, and the rectangular plate on one side is connected with one side of the water tank. A plurality of heat pipes are jointly arranged between the rectangular plates in a sliding and penetrating mode, heating pieces used for heating water in the water tank are arranged on the heat pipes, heat in hot air is collected through the heat pipes in the heating pieces and transmitted into the water tank to heat the water in the water tank, and the driving unit drives the heat pipes to rotate through the mounting assembly so that the water in the water tank can be heated. The heat pipe drives the spiral blade to rotate so as to increase the flowing speed and turbulence degree of surrounding fluid to enhance the heat exchange efficiency, and meanwhile, the driving unit synchronously drives the cleaning unit to synchronously clean dust attached to the outer side of the spiral blade to prevent dust accumulation.