61results about How to "Improve removal effect" patented technology

The invention discloses a pruning device for planting horticultural crops. The pruning device comprises a machine shell, and two protective shells are symmetrically and fixedly connected to the inner wall of the machine shell; the removing mechanism comprises two mounting frames which are symmetrically and fixedly connected to the inner wall of the machine shell, sliding blocks are slidably connected to the inner walls of the two mounting frames, fixing rods are fixedly connected to the side walls of the sliding blocks, cutters are fixedly connected to the other ends of the fixing rods, and the cutters are located in the protective shell; the cleaning mechanism comprises two first rotating shafts which are symmetrically and rotatably connected to the inner wall of the protective shell, two cleaning sponges are symmetrically and fixedly connected to the side walls of the two first rotating shafts, a liquid inlet groove is formed in each first rotating shaft, and a plurality of liquid outlet holes are formed in the inner wall of each liquid inlet groove. The micro motor is driven to rotate in the forward direction, the cutter can be driven to cut off branches or leaves to be trimmed, so that the branches or the leaves are removed, the removing efficiency is high, the labor intensity of workers is reduced, disinfectants or nutritional agents can be sprayed, and crops are promoted to be robust.

The utility model discloses a radio frequency identification (RFID) medical consumable cabinet, which relates to the field of medical consumable cabinets and comprises a base, a cabinet body is mounted at the top of the base, a buffer component is arranged above the outer surface of the cabinet body, a rotating component is arranged inside the cabinet body, and the rotating component comprises a motor arranged on the back of the cabinet body and a driven shaft arranged inside the cabinet body through a bearing. Through the arrangement of the rotating assembly, when the motor works, the motor can drive the driving chain wheel to rotate, then drive the chain to rotate and then drive the other driven chain wheel to rotate, meanwhile, the chain drives the connecting plate to move, the connecting plate drives the mounting frame to move and then drives the containing box to move, and therefore lifting of the containing box can be achieved; according to the technical scheme, the placement box at the high position can move downwards, medical staff can conveniently take and place the medical consumables in the placement box at the high position, the taking-out effect of the medical consumables is improved, in this way, it is not needed to stand on a stool or a chair to take and place the medical consumables, and the safety of taking and placing the medical consumables is improved.

The invention relates to a method for preparing fine iron powder by removing impurities from hematite slag in hydrometallurgy, and belongs to the technical field of chemical metallurgy. The method comprises the following steps: carrying out acid dissolution, impurity removal, washing and filtration on hematite slag produced in a hydrometallurgy process, mixing the hematite slag with a carbonaceous reducing agent, heating the mixed product to 800-1350 DEG C by adopting gas combustion, carrying out heat preservation reaction for 1-4 hours, and after the reaction is finished, carrying out rapid cooling, fine grinding and magnetic separation to obtain the high-purity hematite slag. The iron fine powder contains more than or equal to 70% of iron, less than or equal to 0.5% of zinc, less than or equal to 3.0% of sulfur, less than or equal to 0.1% of copper, less than or equal to 0.1% of lead, less than or equal to 0.1% of arsenic, less than or equal to 0.05% of phosphorus and less than or equal to 1.5% of SiO2. The method has the advantages that the residual impurities of the hematite slag can be deeply removed, the high-quality fine iron powder is obtained, the resource utilization rate of the hematite slag is high, the impurity removal efficiency is good, and the quality of the fine iron powder is good.

The invention relates to the technical field of intelligent optical hair removal equipment, and discloses handheld intelligent optical hair removal equipment and a use method thereof.The handheld intelligent optical hair removal equipment comprises a laser hair removal instrument, a contact frame is fixedly connected to the bottom of the laser hair removal instrument, a fixing frame is fixedly connected to the surface of the laser hair removal instrument, and a massage frame is fixedly connected to the bottom of the fixing frame; and the end part of the massage frame is fixedly connected with a cylindrical frame. When the laser hair removal instrument is used for treating hair, the massage component is started to work, the massage component is used for massaging the skin, and after the skin is massaged for a period of time, pores can expand, so that laser of the laser hair removal instrument can be in full contact with hair follicles, and the hair removal effect is improved. The massage component can push the extrusion component to move up and down when working, the extrusion component can extrude the skin when moving, the skin is massaged in an up-down extrusion mode, and the treatment effect of opening the pores is further improved.

The invention belongs to the technical field of anhydrous magnesium chloride production, and particularly relates to a preparation process of anhydrous magnesium chloride, which comprises the following steps: firstly, dissolving magnesium chloride hexahydrate in absolute ethyl alcohol to form a magnesium chloride ethanol aqueous solution, and then dehydrating the magnesium chloride ethanol aqueous solution by using a molecular sieve to obtain the magnesium chloride ethanol solution; carrying out secondary cooling, stirring crystallization, secondary solid-liquid separation and vacuum drying on the magnesium chloride ethanol solution to obtain high-purity anhydrous magnesium chloride; and recycling ethanol liquid obtained by solid-liquid separation and ethanol gas obtained by vacuum drying. The technical scheme provided by the invention is simple in process flow, low in energy consumption, low in equipment requirement, high in product yield and high in purity, and can be directly applied to the fields of electrolytic preparation of magnesium, catalyst carriers and the like.

The present invention relates to the technical field of hydraulic brake joint detection, and discloses an automatic detection device for hydraulic brake joint threads, comprising a feeding base plate and a first detection station and a second detection station arranged on a ring conveyor line, wherein a side plate is fixed to the feeding base plate, a rotating shaft is rotatably connected to the side plate, a flip seat is fixed to the end of the rotating shaft, a first rotating groove is arranged in the side plate, a gear is rotatably arranged in the first rotating groove, a first tooth plate is meshed on the gear, and a first slideway for the first tooth plate to slide is provided on the side plate; the technical scheme can blow air into the interior of the joint workpiece before detecting both ends of the joint workpiece, so as to remove foreign matter inside the joint workpiece and improve the detection accuracy, and at the same time, the flip seat can be flipped to detect both ends of the joint workpiece and increase the detection efficiency.

The invention relates to an adaptive vascular intracavity stent taking-out structure applied to the technical field of medical instruments, and the adaptive vascular intracavity stent taking-out structure comprises a taking-out pocket frame, a taking-out pipe, a suction pipe, a telescopic rib, a suction elastic frame, a supporting rib, a bite needle and barbs. The sucking pipe is contracted to drive the sucking elastic frame to push the thrombus to the taking-out pocket frame, the taking-out pocket frame and the sucking elastic frame respectively wrap the two ends of the thrombus, and therefore the thrombus is wrapped, the thrombus is conveniently taken out, and when the sucking elastic frame pushes the thrombus, the thrombus can be conveniently taken out by repeatedly conducting telescopic changes of the telescopic rib. The closed end of the suction elastic frame is driven to stretch and deform, the bite needle is repeatedly inserted into and pulled out of the thrombus, in the bite needle pulling-out process, the bite needle is matched with the barbs to bite and break the thrombus, and therefore the caked thrombus can be more finely broken, the thrombus can be conveniently sucked out through the suction pipe, and the thrombus taking-out effect is further effectively improved.

This disclosure relates to a manganese-containing graphene composite material, its preparation method, and its uses. The method includes: mixing graphite, potassium permanganate, and concentrated acid, heating and reacting them, then adding water and stirring to obtain a mixed solution; mixing the mixed solution with optional hydrogen peroxide, and refluxing it under intermittent ultrasonic stirring, so that the resulting material is separated into solid and liquid phases to obtain a solid product; calcining the solid product under an inert atmosphere; the intermittent ultrasonic stirring step includes: (1) ultrasonic stirring for 5-30 min and then stopping for 10-60 min; (2) repeating step (1). The manganese-containing graphene composite material provided by this invention contains elements such as manganese, potassium, and sulfur. By refluxing under intermittent ultrasonic stirring, this invention enables the manganese-containing graphene composite material to have a large specific surface area, exhibiting excellent performance in reactions such as the removal of sulfur-containing compounds. On the other hand, the content of manganese ions and other substances in the wastewater is significantly reduced during the preparation process, effectively solving the problem of wastewater discharge pollution.

The invention discloses a denitrification and dephosphorization agent and a preparation method thereof. First, corn stalks and a metal nitrate aqueous solution are used as raw materials to prepare metal-based biochar, and then acrylamide is polymerized in situ with the metal-based biochar as a matrix to prepare modified metal-based biochar; then acrylic acid is used to graft starch to obtain acrylic acid grafted starch, and then the acrylic acid grafted starch is reacted with ethylenediamine solution to obtain amino chelated starch, and enzymatic hydrolysis is performed to obtain porous amino chelated starch; finally, the modified metal-based biochar and the porous amino chelated starch are compounded to obtain the agent. The agent can simultaneously achieve denitrification and dephosphorization of sewage, and has very good application prospects.

The embodiment of the invention provides a display panel, a preparation method of the display panel and a display device. The light emitting efficiency of the light emitting side of the display panel is improved. The display panel comprises: a substrate; the pixel definition layer is positioned on one side of the substrate; the first dimming layer is located on the side, away from the substrate, of the pixel definition layer, the orthographic projection of the first dimming layer on the substrate covers the orthographic projection of the pixel definition layer on the substrate, and the first dimming layer comprises a plurality of hole structures; the second dimming layer is located on the side, away from the substrate, of the first dimming layer, the hole structure is filled with the second dimming layer, and the refractive index of the second dimming layer is larger than that of the first dimming layer. Therefore, the concentration of the light emitted by the light-emitting unit is enhanced, the light brightness of the light-emitting side is improved, the light-emitting efficiency of the light-emitting side is improved, and the light extraction capability is enhanced.

The present invention discloses an acid mist purification treatment machine based on alkali solution neutralization, including a treatment tube and a support frame, wherein the treatment tube is arranged inside the support frame and fixedly connected to the inner wall of the support frame, and one side of the bottom of the treatment tube is connected to an external alkali solution storage device through a connecting pipe, and further includes: an air intake device, which is arranged inside the treatment tube, and the air intake device is used to discharge the fly to be treated into the treatment tube, and the air intake device is fixedly connected to the inner wall of the treatment tube through a bracket, and the air intake end of the air intake device penetrates the treatment tube and extends to the outside of the treatment tube; a spray device, which is arranged on the top of the treatment tube, and the spray device is used to spray the alkali solution into the treatment tube after atomization. The present invention relates to the field of acid mist purification technology. The acid mist purification treatment machine based on alkali solution neutralization facilitates the alkali solution to be evenly contacted with the waste gas, thereby achieving a better effect of removing the acid mist in the waste gas.

The invention relates to the field of water treatment agents, and particularly discloses a multi-effect environment-friendly chelating cleaning agent and a preparation method thereof.The chelating cleaning agent is prepared from, by mass, 15-30% of chelating agent, 3-8% of nitrilotriacetic acid sodium salt, 1-2% of lauryl sodium sulfate, 2-6% of modified attapulgite, 1.5-5% of modified cyclodextrin and the balance water. The chelating cleaning agent disclosed by the invention is environment-friendly and multi-effect, has a better cleaning effect in the aspect of dirt removal of reverse osmosis membranes, nanofiltration membranes, pipeline equipment and the like, can effectively remove dirt and remove heavy metals, prolongs the service life of cleaned objects, and is high in cleaning efficiency and more thorough in cleaning.

The invention provides a thiourea-alginic acid polyolefin material ash removal agent. The thiourea-alginic acid polyolefin material ash removal agent has a structure shown in the following formula, wherein n is greater than or equal to 1; the preparation method comprises the following steps: mixing a condensation activator and an alginic acid aqueous dispersion, carrying out a reaction, adding thiourea and a condensing agent, continuing the reaction, and sequentially filtering, washing, precipitating and drying the obtained reactant to obtain the product. Or mixing alginic acid with N, N-dimethylformamide and thionyl chloride, carrying out a first reflux reaction, centrifuging to obtain acylating chlorination alginic acid, washing, mixing with thiourea and anhydrous tetrahydrofuran, and carrying out a second reflux reaction to obtain the product. When the thiourea-alginic acid polyolefin material ash removal agent is used for removing residual metal in polyolefin, the swelling phenomenon cannot be generated, pressure drop is low, operation is facilitated, the metal removal effect is good, the total content of metal ions in polyolefin can be controlled within an extremely low range, and compared with an existing chelating adsorption method, the thiourea-alginic acid polyolefin material ash removal agent has the advantage that the adsorption efficiency is high. The method has remarkable technical advantages. # imgabs0 #

The utility model provides a display substrate, belongs to the technical field of display, and can solve the problems of poor dark spots and the like caused by short circuit between an anode and a cathode due to the fact that an anode film layer at a T position of a tip structure is easy to fall off or adsorb foreign matters and the like, and a light-emitting layer is easy to pierce. The display substrate comprises a substrate body, an interlayer dielectric layer and a pixel unit, wherein the interlayer dielectric layer and the pixel unit are arranged on the substrate body. The pixel unit comprises a plurality of concave microstructures formed on the interlayer dielectric layer and a light-emitting device located on the side, away from the substrate body, of the interlayer dielectric layer. The array substrate is characterized in that for each pixel unit, a first area is defined by the multiple concave microstructures which are arranged adjacently, and the orthographic projection of the first electrode of the light-emitting device and the orthographic projection of the first area on the substrate do not overlap.

The invention belongs to the field of chemical industry, and relates to an anti-corrosion process and device for hydrolysis of methyl acetate and refining of acetic acid in the process of recovering polyvinyl alcohol mother liquor. The anti-corrosion device comprises a methyl acetate concentration device, a methyl acetate dealdehyde device, a methyl acetate hydrolysis device, a hydrolyzate separation device, an acetic acid refining device and an isopropyl acetate recovery device. The methyl acetate hydrolysis and acetic acid refining process mainly comprises methyl acetate concentration, methyl acetate dealdehyde, methyl acetate hydrolysis, hydrolyzate separation, acetic acid refining and isopropyl acetate recovery. The ability to remove halogen-containing impurities is enhanced by arranging a mass transfer unit (i.e., a packing section) on the upper part of the side sampling port of the hydrolysis tower; by adding a precision filter, the broken resin entrained in the hydrolyzate is filtered, and the broken resin with sulfonic acid groups is prevented from entering the acetic acid refining system. The corrosion problem of acetic acid refining equipment is fundamentally solved, the problem of equipment corrosion in the acetic acid refining process is significantly solved, and the life of key equipment is extended by 1 to 5 times.

The utility model relates to a calcium carbide method acetylene wastewater treatment device, including treatment jar, aeration structure and spraying structure, its technical key point is: aeration structure includes upper aeration pipe group and lower aeration pipe group, and upper and lower aeration pipe group are respectively by longitudinal arrangement multiple aeration coil, and is equipped with openwork baffle between two adjacent aeration coil, and the bottom of upper and lower aeration pipe group is equipped with openwork support plate, and the top is equipped with openwork cover plate, the inlet pipeline outer end of spraying structure is connected with upper filter, and the inlet of upper filter is connected with wastewater input pipeline, and the bottom center of treatment jar is equipped with water outlet, and the bottom of water outlet is fixed with lower filter, and the outlet of lower filter is connected with liquid phase output pipeline, and liquid phase output pipeline is equipped with circulation branch, and the circulation branch end is equipped with circulating pump, and the outlet pipeline end of circulating pump is communicated with wastewater input pipeline. The device further strengthens acetylene removal effect, and has the effect of filtering impurities before the recycling of sodium hypochlorite.

The invention relates to a smelting method of an aluminum-free high-temperature alloy, which relates to the technical field of alloy materials, and is characterized in that the contents of oxygen, nitrogen and sulfur elements in a high-temperature alloy melt are gradually reduced by adding different composite deoxidizing and sulfur agents for three times in the smelting process; through two times of refining, melt quenching and tempering treatment and high-temperature purification treatment, removal of oxygen, nitrogen and sulfur elements in the high-temperature alloy melt is promoted, the content of harmful impurities is effectively reduced, segregation of alloy elements is reduced, and the purity and performance of the high-temperature alloy are improved.

The utility model provides a device and equipment for efficiently removing and purifying hydrogen sulfide in phosphoric acid. The device for efficiently removing and purifying hydrogen sulfide in phosphoric acid comprises an aeration tower, a supergravity hydrogen sulfide remover, a fixed seat, a bubble generator and a material conveying assembly, a top cover is arranged at the top end of the aeration tower, the bubble generator is arranged on the top cover, and the bubble generator is provided with a compressed gas inlet pipe; the material conveying assembly comprises a feeding pipe, a material guiding pipe and a material conveying pipe, the two ends of the bubble generator are communicated with the feeding pipe and the material guiding pipe respectively, the end, away from the bubble generator, of the material guiding pipe is located in the aeration tower, one end of the material conveying pipe is located in the aeration tower, and the other end of the material conveying pipe sequentially penetrates through the aeration tower and the supergravity hydrogen sulfide remover. The bubble generator is used for generating a bubble group with small particle size, the contact area of air and phosphoric acid is increased, H2S in phosphoric acid can be transferred into bubbles, high mass transfer efficiency of H2S is ensured, the phosphoric acid treated by the bubble generator is aerated, and the removal efficiency and removal effect of H2S are improved.

The utility model discloses a device for integrally removing burrs of a casting sand core, which comprises a support frame, a plurality of groups of driving blocks are fixedly arranged above the support frame, and a connecting plate is fixedly arranged between two adjacent groups of driving blocks; a rotating rod is rotationally arranged on the inner side of the driving block, the upper end of the rotating rod penetrates through the driving block, and a first bevel gear is fixedly mounted on the outer side of the rotating rod; the right end of the first bevel gear is connected with a second bevel gear in an engaged mode, the right end of the second bevel gear is fixedly connected with a winding roller, and the right end of the winding roller penetrates through the driving block. The winding roller is located below the connecting plate, and a polishing chain is fixedly installed on the outer side of the winding roller. According to the device for integrally removing the burrs of the casting sand core, through the arrangement of a plurality of groups of polishing chains, the burrs of the sand core which moves up and down for multiple times can be integrally removed by the polishing chains through friction, so that the production efficiency of the sand core is improved.

This application discloses a control method, device, medium, and equipment for steam regulation in a propane stripper, comprising the following steps: Step S1: When the measured value of the side stream liquid level is ≥95.5% and the differential pressure on the tray is >35 kPa, the setting value of the steam flow regulating valve is lowered at intervals of 10 times / minute; Step S2: When the measured value of the side stream liquid level is <95% and the differential pressure on the tray is <48 kPa, the setting value of the steam flow regulating valve is raised at intervals of 10 times / minute; Step S3: The propylene reflux flow rate is measured using a flow detection device. When the propylene reflux flow rate is lower than 4100 kg / h, the steam feed rate is increased; Step S4: When the propylene reflux flow rate is higher than 4500 kg / h, the steam feed rate is reduced in multiple adjustments to maintain the propylene reflux flow rate at or above 5100 kg / h. After adopting this method, the top reflux flow rate of the propane stripper was stabilized at around 5100 kg / h, which solved the problem of intermittent and large fluctuations in the top reflux flow rate. After being put into use, the top output of the tower is sufficient and stable, and the side output level gauge is stable at 104%, ensuring the stable operation of the propylene recovery pump.

The application discloses a method for removing endotoxin from gelatin. The method comprises the following steps: (1) adding pyrogen-free water to gelatin raw materials, swelling, and then heating to 50-70 DEG C to prepare a gelatin solution with a mass concentration of 3-20%; (2) adding an adsorbent with a mass of 2.5%-100% of the gelatin, adsorbing at 40-70 DEG C for 30-240 min, and then separating the adsorbent from the gelatin solution by filtration or centrifugal separation to obtain a filtrate; (3) further filtering the filtrate by filter paper and thin-layer diatomite to obtain a refined filtrate, diluting the refined filtrate with 4 times the volume of water, ultrafiltering by using a membrane with a molecular weight cut-off of 5000-20000 Da, finally concentrating to a concentration of 10-25%, sterilizing, and drying to obtain gelatin solid with low endotoxin; the adsorbent used in step (2) is an adsorbent with a silica gel carrier, polyethylene imine as a ligand, and a spacer arm grafted or ungrafted, and the spacer arm is hexanediamine. The purified gelatin can be used in the preparation of blood plasma substitutes, tissue engineering scaffolds, implants and absorbable hemostatic materials.

The present invention relates to a cleaning liquid, comprising component (A): a compound represented by the following general formula (1), component (B): an alkylamine, component (C): a polycarboxylic acid, and component (D): ascorbic acid, wherein the mass ratio of component (A) to the total mass of component (B) and component (C) is 1 to 15. (In the general formula (1), R 1 , R 2 , R 3 The definitions are the same as those in the specification. ).

The present invention provides a base oil for a metalworking oil composition, which is a hydrocarbon having a flash point of less than 70 DEG C and a proton ratio of a methyl group of 20-65 (inclusive) when the integral value of all protons detected by 1H-NMR analysis is 100.

The application discloses a multistage groove type vinyl chloride removal system and method for PPVC latex, and the vinyl chloride removal system comprises a discharge groove connected with a polymerizer, the discharge groove is sequentially connected with a first vacuum removal groove and a second vacuum removal groove, the top of the discharge groove and the first vacuum removal groove is connected with a vacuum removal system, and the vacuum removal system is connected with a gas tank; the discharge groove, the first vacuum removal groove and the second vacuum removal groove are all vertical grooves. Compared with the prior art, the application adopts a three-stage groove type vinyl chloride removal system, three vertical removal grooves are used in series, the latex is in a continuous recovery state in the conveying and temporary storage processes, the utilization rate of the removal grooves reaches 100%, meanwhile, the latex can be transferred to outside the polymerizer in the first time after the reaction of the polymerizer is completed, the occupation period of the polymerizer is greatly shortened, the use period of the polymerizer is shortened to 75% of the original period, and the production efficiency is improved; the removal device has good anti-blocking performance, and the recovery groove can be continuously used for more than 5 years without cleaning.

The utility model provides a flue gas denitration system which comprises a urea pyrolysis device, a reaction tank is arranged on one side of the urea pyrolysis device, the reaction tank comprises a first reaction chamber and a second reaction chamber, the first reaction chamber is communicated with the second reaction chamber through a horizontally downward taper hole, a first gas inlet and a second gas inlet are fixedly formed in the first reaction chamber, and a second gas inlet is fixedly formed in the second reaction chamber. The urea pyrolysis device is connected with the gas inlet I through an ammonia gas conveying pipeline, the gas inlet II is communicated with the flue gas conveying channel, an ammonia spraying grid is arranged in the ammonia gas conveying pipeline, and a gas pump is arranged in the ammonia gas conveying pipeline between the reaction tank and the urea pyrolysis device. According to the utility model, the ammonia gas is injected outside the furnace and is matched with the baffle plate in the first reaction chamber, so that the problems that the amount of the ammonia gas in the reaction tank is uncontrollable, the reaction of the ammonia gas and the nitrogen oxide is insufficient, and the removal effect of the nitrogen oxide is not ideal are solved.

The present invention provides a vine pulling, chopping and scattering device for potato harvesting, characterized in that it comprises a frame, a guide device, a vine gathering and pulling device, a clamping and conveying device, a vine cutting device and a scattering device, wherein the vine gathering and pulling device comprises a vine gathering device, a vine pulling device and a potato pressing device, a vine cutting frame is arranged behind the clamping and conveying frame, the vine cutting device is arranged on the vine cutting frame with a rectangular frame structure, a U-shaped scattering device is fixed behind the vine cutting device, a vine pulling disc in the vine pulling device comprises a fixed disc and a wave edge, and when viewed in the forward direction of the vine pulling, chopping and scattering device, the wave edges of two inclined vine pulling discs at the bottom position of the vine pulling device are fitted and clamped, and the bottom tangent of the wave edge of the vine pulling disc is close to the potato ridge top. The present invention can realize automatic guiding, vine pulling, clamping and conveying, vine crushing and scattering operations, and the machine has a low potato damage and skin breakage rate, a high vine removal rate, and a good vine fine treatment effect.

This invention discloses a wastewater treatment agent for thallium-containing wastewater and its preparation method, belonging to the field of environmental engineering technology. It features a large specific surface area and porosity, abundant active sites, and a molecular sieve effect. In its spatial structure, the wastewater treatment agent has a gradient porous structure, with a large-pore inner layer, a small-pore outer layer, and a middle layer containing manganese dioxide sites with oxidizing properties. The difference in pore size between the inner and outer layers protects the internal oxidizing component, manganese dioxide, from interfering with the active sites due to byproducts. Furthermore, the gradient porous structure increases adsorption and improves thallium removal. The modified polystyrene microspheres in this invention contain sulfonic acid groups on their surface. After coordination interaction with manganese ions, they can bind to positively charged thallium ions through electrostatic attraction, achieving the adsorption and enrichment of thallium ions.

The present invention discloses a bipolar charged coagulation air purification device, comprising: a casing, the casing is provided with an air inlet and an air outlet that are interconnected; a bipolar charged coagulation mechanism, comprising a first charged component, a first filter, a second charged component, a coagulation element and a second filter arranged in the casing in sequence along the airflow direction, and the first charged component and the second charged component are symmetrically arranged with the axis of the casing as the symmetry axis; an airflow driving component, arranged in the casing, for driving air to pass through the air inlet, the bipolar charged coagulation mechanism and the air outlet in sequence. The present invention helps to solve the problem that existing air purification devices on the market that adopt the principle of mechanical filtration are difficult to remove PM from the air. 2.5 , the air purification device using the traditional electrostatic dust removal principle can remove PM 2.5 , but the removal effect is not good.

The invention discloses a method for removing chlorine in waste plastic pyrolytic oil by using alkali metal hydride, which comprises the following specific steps: S1, adding waste plastic pyrolytic oil into a reactor, then adding alkali metal hydride, and uniformly mixing the waste plastic pyrolytic oil and the alkali metal hydride to obtain a mixed solution; s2, heating the mixed solution to a reaction temperature, and carrying out a dechlorination reaction to obtain an intermediate solution; and S3, adding water into the intermediate solution, and extracting to remove sodium chloride to obtain the dechlorinated plastic oil. According to the method, organic chlorine in the waste plastic pyrolytic oil can be efficiently removed, total chlorine in the waste plastic pyrolytic oil can be removed, the yield of the waste plastic pyrolytic oil can be guaranteed, the dechlorinated waste plastic pyrolytic oil meets the subsequent processing requirements, and the corrosion problem is avoided.

The utility model relates to the technical field of dipotassium glycyrrhizinate production, in particular to a secondary concentration device for dipotassium glycyrrhizinate. The secondary concentration device for dipotassium glycyrrhizinate is used for concentrating a primary concentrated material of dipotassium glycyrrhizinate, and comprises a concentration kettle for performing secondary concentration treatment on the primary concentrated material and forming gas-phase ethanol; a gas phase outlet of the concentration kettle is connected with a feeding hole of the condenser; a discharge port of the condenser is connected with a feed port of the ethanol collecting tank, and the ethanol collecting tank is connected with a vacuum pump. According to the utility model, the concentration kettle is vacuumized, so that a small amount of ethanol in a primary concentrated material can be removed, and the influence of ethanol residue on the production process after dipotassium glycyrrhizinate is reduced; the bottom of the concentration kettle is connected with the first breather valve, so that sterile gas can be input into the concentration kettle, the input of the sterile gas is beneficial to rolling of materials in the concentration kettle, and the secondary concentration efficiency is improved.