82results about How to "No corrosion" patented technology

The invention discloses a method for extracting valuable metals from black powder of waste lithium ion batteries, and belongs to the technical field of recycling of waste lithium ion batteries. According to the method, valuable metals are extracted from the waste lithium ion battery black powder by adopting low-temperature roasting and water leaching, the waste lithium ion battery black powder is taken as a raw material, sulfamic acid is taken as a roasting agent, the waste lithium ion battery is pretreated, and roasting for carbon removal, metal extraction and water leaching are performed in sequence, so that the valuable metals are obtained. And leaching liquid and leaching residues containing two or more elements of lithium, nickel, cobalt, manganese, iron and aluminum are obtained and are used for further purification and recovery of valuable metals. According to the method provided by the invention, the influence of aluminum dissolution on recovery of other metals is reduced, the use of hydrogen peroxide is avoided, the process flow is shortened, the process cost is greatly reduced, the roasting and water leaching processes cannot corrode equipment, and the whole process cannot generate waste acid to cause secondary pollution.

The invention belongs to the technical field of waste resource recycling, and discloses a preparation method and application of a solid acid catalyst for degrading waste PET to prepare TPA, and the solid acid catalyst for degrading waste PET to prepare TPA is a heteropolyacid asymmetric biquaternary ammonium salt solid acid catalyst with a phase transfer function. The preparation method comprises the following steps: carrying out an ion exchange reaction on an asymmetric biquaternary ammonium salt surfactant and heteropoly acid according to a molar ratio of (0.5-1.5): 1 to prepare the solid acid catalyst for degrading waste PET to prepare TPA; the application of the solid acid catalyst comprises the following steps: adding the waste PET, the solid acid catalyst and distilled water into a polytetrafluoroethylene or para-polyphenyl lining of a self-pressure-generating reaction kettle according to a certain mass ratio, and reacting at 180-220 DEG C for 4-24 hours by using a homogeneous reactor. The preparation method disclosed by the invention is simple and convenient in process, and the prepared solid acid catalyst has excellent catalytic degradation performance, can be recycled for multiple times, and is environment-friendly and resource-saving.

The invention provides an underwater humanoid dexterous hand, and particularly relates to the technical field of bionic machinery, according to the underwater humanoid dexterous hand, a spring electromagnet is used for locking a corresponding tendon rope group, then a soft body is driven to be connected into liquid, a sliding block slides on a sliding rod, the corresponding tendon rope group is pulled, and the tendon rope group is driven to rotate; the tendon rope set is driven to operate corresponding to the palm assembly or the finger assembly, object grabbing and other work are completed, the driving soft body is matched with hydraulic pressure to pull the tendon rope set to operate, and the robot can adapt to a deep water area and resist large water pressure.

The invention relates to the technical field of cutting fluids, and discloses a high-temperature alloy cutting fluid and a preparation method thereof, the high-temperature alloy cutting fluid comprises the following components: 30%-50% of base oil, 5%-10% of organic alkali, 5%-10% of an antirust agent, 4%-10% of synthetic ester, 15%-20% of an anti-wear reagent at extreme pressure, 0.5%-1.5% of a corrosion inhibitor, 7%-15% of an emulsifier, 2%-4% of a bactericide, 0.05%-0.1% of a defoaming agent, and the balance of water; the extreme pressure anti-wear agent is composed of a chlorination extreme pressure anti-wear agent and a vulcanization extreme pressure anti-wear agent. According to the invention, the ester-based base oil, the organic alkali, the synthetic ester and the extreme pressure anti-wear agent composed of the chlorination extreme pressure anti-wear agent and the vulcanization extreme pressure anti-wear agent are combined to form a continuous high-strength lubricating film, and the continuous high-strength lubricating film is compounded with additives such as the organic acid antirust agent, the corrosion inhibitor and the bactericide; therefore, the antirust corrosion inhibition performance of the cutting fluid on workpieces and machine tools and the long-term use safety and environmental protection performance are improved during processing.

The invention discloses a nitrogen fertilizer synergist and application thereof, and belongs to the technical field of fertilizers. The nitrogen fertilizer synergist comprises the following raw materials in percentage by mass: 15-40% of a nitrification inhibitor, 5-10% of butyl dihydrojasmonate, 1-5% of a soil loosening agent, 30-50% of a dispersing aid, 5-10% of an anti-caking agent, 0.1-5% of a trace element fertilizer and 0-5% of nutritional ingredients. According to the nitrogen fertilizer synergist disclosed by the invention, by adding the dihydro jasmonic acid butyl ester, the dispersity of the nitrogen fertilizer synergist can be improved, the fertilizer efficiency of the fertilizer is improved, the growth of plants is promoted, the stress resistance of the plants is improved, the nitrogen fertilizer synergist also has double functions of delaying nitrogen conversion and promoting nitrogen absorption, the utilization efficiency of nitrogen is further improved, and the nitrogen fertilizer synergist is relatively good in flowability and can be applied to the field of agricultural production. The nitrification inhibitor is stable in high-temperature and low-temperature environments, is convenient to use, can be directly used for particle spraying or adding of fertilizer, and solves the problem that nitrification inhibitors such as DMPP can only be used after being dissolved by special solvents.

The invention provides a fluorine-containing cooling liquid, application thereof and a liquid cooling system, the fluorine-containing cooling liquid comprises a fluorine-containing compound, and the fluorine-containing compound comprises one or more of compounds as shown in a formula 1, a formula 2 and a formula 3; # imgabs 0 #, # imgabs 1 # and # imgabs 2 #; wherein R11, R22 and R33 are respectively and independently selected from methyl; r < 12 >, R < 21 >, R < 31 >, R < 32 > and R < 34 > are independently selected from perfluoroalkyl groups; r13, R23 and R35 are independently selected from-CnF2n-groups and do not contain unsaturated bonds, and n is larger than or equal to 1. The fluorine-containing cooling liquid provided by the invention has high heat dissipation efficiency, the compounds shown in the formula 1, the formula 2 and the formula 3 are not decomposed when heated at high temperature, the stability of the compounds is good, and the problem of corrosion to equipment needing heat dissipation cannot occur.

The invention provides a high-temperature-resistant and salt-fog-resistant wave-absorbing coating which is prepared from the following components in parts by weight: 26.9-32 parts of organic silicon resin, 54.8-57.7 parts of metal micro powder, 0.5-0.8 part of a dispersing agent, 0.5-0.8 part of an anti-settling agent, 1-1.5 parts of a salt-fog-resistant auxiliary agent and 10.6-13.2 parts of a solvent, the components are compounded and cured to obtain the high-temperature-resistant and salt-fog-resistant wave-absorbing coating, and particularly, the high-temperature-resistant and salt-fog-resistant wave-absorbing coating is prepared from the following components in parts by weight: 26.9-32 parts of organic silicon resin, 54.8-57.7 parts of metal micro powder, 0.5-0.8 part of The preparation method comprises the following steps: adding organic silicon resin, a solvent, a dispersing agent and a salt-spray-resistant additive into a reaction kettle, carrying out first dispersion stirring, adding an anti-settling agent, carrying out second dispersion stirring, adding metal micro-powder in batches, carrying out third dispersion stirring to obtain a wave-absorbing coating, spraying the wave-absorbing coating on a metal substrate, airing at room temperature, and drying at room temperature to obtain the wave-absorbing coating. And respectively baking at 55 DEG C, 100 DEG C and 250 DEG C to obtain the high-temperature-resistant salt-fog-resistant wave-absorbing coating. The wave-absorbing coating prepared by the preparation method disclosed by the invention can be free from blistering and cracking at 320 DEG C for 300 hours, and also can be free from obvious corrosion, wrinkling, cracking and falling off in a neutral salt mist environment for 480 hours.

The invention discloses a Cu-BTC composite material for capturing carbon dioxide / hydrogen sulfide as well as a preparation method and application of the Cu-BTC composite material, and particularly relates to a Cu-BTC composite material which is prepared by efficiently synthesizing Cu-BTC by adopting a solvothermal method, preparing a deep eutectic solvent by utilizing a thermal mixing method and carrying out functional modification after synthesis. The Cu-BTC composite material prepared by the method can effectively and synergistically capture carbon dioxide and hydrogen sulfide in biogas to prepare high-value methane. The composite material is high in gas adsorbability and adsorption selectivity, and the adsorbed Cu-BTC composite material can be recycled after being directly dried. The method is simple to operate, does not need toxic solvents, and has good application prospects.

A descaling device of an evaporative cooler comprises a box body, a plurality of heat exchange coils are fixedly installed in the box body, each heat exchange coil comprises a straight pipe and a bent pipe, a spraying device for spraying cold water to the heat exchange coils is arranged on the upper side in the box body, two drain outlets are formed in the bottom of the box body, and an air inlet and an air outlet are sequentially formed in the two sides of the box body. The heat exchanger is characterized in that an installation plate is movably arranged in the box body, a plurality of through holes are formed in the portion, corresponding to the straight pipe portion of the heat exchange coil pipe, of the installation plate, and annular scrapers are arranged in the through holes respectively. The water scale removing device is simple in structure and ingenious in conception, the annular scraper is driven by the driving device to move to remove water scale on the surface of the heat exchange coil, manual scraping is not needed, time and labor are saved, work of a cooler is not affected during scraping, working efficiency is improved, environmental pollution and corrosion to the heat exchange coil are avoided, market requirements can be met, and the water scale removing device is suitable for popularization.

The invention provides a method for preparing alkyl naphthalene by using a metal organic framework as a catalyst and application of the alkyl naphthalene. The method comprises the following step: in the presence of a metal organic framework catalyst, alpha-olefin and naphthalene and / or methylnaphthalene are subjected to an alkylation reaction to obtain alkyl naphthalene. The invention also provides application of the alkyl naphthalene prepared by the method for preparing the alkyl naphthalene by using the metal organic framework as the catalyst as base oil of V-type lubricating oil. The alkyl naphthalene is prepared by adopting the MOFs catalyst, the catalyst has large pore channels, and the catalyst is high in catalytic activity, long in service life, free of pollution and not prone to corroding equipment in the preparation process of the alkyl naphthalene.

The utility model discloses an anti-corrosion device for a perforated bolt. The anti-corrosion device comprises a connected plate and a bolt body arranged in the connected plate, the bolt further comprises a mounting support, the mounting support is located on the outer side of the bolt body, the lower side of the mounting support is fixedly connected with a second sealing ring, and the second sealing ring is arranged in a concentric circle mode. The sealing plate is located on the inner side of the fixing ring, the outer side of the sealing plate is fixedly connected with a first sealing ring, and the first sealing ring is tightly attached to the fixing ring; the fastening piece is in threaded connection with the lower end of the bolt body, a third sealing ring is fixedly installed on the upper side of the fastening piece, and a ribbon is tightly attached to the outer side of the fastening piece. When the anti-corrosion device for the perforated bolt is used, the device mounting bracket can well isolate the external environment and protect the bolt body from being corroded, is easy to disassemble, does not influence normal use, and can effectively prevent moisture and corrosive media from being in contact with the bolt body, the groove and the nut and protect the bolt body, the groove and the nut from being corroded.

The invention discloses a two-component waterborne polyurethane coating for three-proof paint machine coating, comprising a component A and a component B, wherein, by weight, the component A comprises the following raw materials in parts by weight: waterborne hydroxy acrylic dispersion: 25.0-35.0 parts; anionic polyacrylate dispersion: 15.0-25.0 parts; organosilicon-modified styrene acrylic emulsion: 20.0-30.0 parts; silica sol: 3.5-6.5 parts; cosolvent: 3.6-7.8 parts; functional additive: 0.7-2.9 parts; water: 6.0-15.0 parts; by weight, the component B comprises the following raw materials in parts by weight: aliphatic polyisocyanate: 70.0-90.0 parts; propylene glycol diacetate: 15-25 parts. The two-component water-based polyurethane three-proof paint product used for three-proof paint machine coating has the advantages of waterproof, moisture-proof, mildew-proof, salt spray resistance, high hardness, high gloss, high transparency, resistance to cold and hot shocks, scratch resistance, strong adhesion, long activation period, no blistering when thickly coated, health and environmental protection, etc., and can be used to protect electronic circuit boards and their components.

The invention relates to the field of paperboard, in particular to a multi-layer composite waterproof and explosion-proof corrugated paperboard and a preparation method thereof. An explosion-proof film layer, a foam board layer, a reinforcing fiber mesh layer and a corrugated paperboard layer are sequentially bonded with a green flame-retardant adhesive to obtain a corrugated paperboard, and a modified halloysite nanotube and a composite waterborne polyurethane are compounded as a protective coating to be coated on the corrugated paperboard; cross-linked oxidized starch is compounded with the composite waterborne polyurethane and the modified halloysite nanotube to obtain a flame-retardant adhesive; the halloysite nanotube is modified by firstly amminating its surface with 3-aminopropyltriethoxysilane, and then graphene oxide is loaded on its surface by electrostatic self-assembly to obtain a hybrid flame-retardant filler, namely, a composite halloysite nanotube, which is then modified with aspartic acid and then reactively grafted with a salicylaldehyde Schiff base flame retardant containing a hydroxyl group.

The invention provides a corrosion and scale inhibitor as well as a preparation method and application thereof, and relates to the technical field of chemical engineering. The corrosion and scale inhibitor is prepared from the following raw materials in percentage by mass: 7-12% of zinc sulfate, 8-12% of hydroxyethylidene diphosphonic acid, 8-15% of sulfonated terpolymer, 3-5% of methylbenzotriazole and the balance of water. The corrosion and scale inhibitor disclosed by the invention is simple in composition and low in cost, a remarkable scale inhibition effect can be realized only by adding 50ppm-70ppm of the corrosion and scale inhibitor into circulating cooling water, and the corrosion and scale inhibitor has a wide market application prospect.

The invention relates to the technical field of fire fighting and extinguishing, in particular to a forest fire extinguishing rocket projectile with a racemization empennage, which comprises a projectile head, a projectile body, a solid rocket engine, the racemization empennage and a baffle ring, the bomb body is provided with a shell, a superfine dry powder extinguishing agent, a front sealing plate, a rear sealing plate and an initiating explosive column, the solid rocket engine provides power for flight, the rotation eliminating empennage can rotate around the axis of the bomb body to eliminate airflow interference, and the baffle ring axially limits the rotation eliminating empennage; according to the forest fire extinguishing rocket projectile with the racemization empennage, long-distance launching is achieved through the solid rocket engine, accurate spreading of the fire extinguishing agent is guaranteed through the infrared proximity fuze, the superfine dry powder fire extinguishing agent is environmentally friendly and efficient, the racemization empennage improves the drop point precision, the forest fire extinguishing rocket projectile is suitable for fire extinguishing of large-area fire sources such as forests and grasslands, the casualty risk is reduced, and the forest fire extinguishing rocket projectile is suitable for large-area fire extinguishing. And the fire extinguishing timeliness and effectiveness are effectively improved.

The invention discloses a water-based mud cuttings composite breaker and a method for using the same, belonging to the technical field of oil and gas drilling waste breaker, including the following raw materials in parts by mass: 30-60 parts of copolymer, 1-5 parts of aluminum sulfate, 10-30 parts of polyaluminum ferrosilicate, 1-10 parts of polyaluminum chloride, 1-5 parts of calcium chloride, 0.1-5 parts of sodium hydroxide, 5-25 parts of calcium oxide; the copolymer is prepared from the following raw materials in parts by mass: 200-300 parts of water, 12.5-20.8 parts of methacrylamide, 8.2-10.7 parts of 3-cyclohexylpropionic acid, 3.5-6.5 parts of hydroxymethyl cellulose, 0.2-6.5 parts of EDTA, 0.1-0.15 parts of potassium persulfate, and 0.15-0.2 parts of sodium bisulfite. The breaker of the present invention has strong broad spectrum, strong mud adaptability, high water yield, outstanding breaker effect, and the material is close to neutral, which greatly reduces the corrosion to the filter press.

The invention discloses a preparation method for realizing controllable specification of cellulose nanocrystals by virtue of maleic acid hydrolysis synergistically assisted by ferric chloride catalysis and microjet machinery. The method comprises the following steps: (1) preparing a maleic acid solution, proportioning a ferric chloride solution, mixing and heating, and then adding a cellulose raw material for hydrolysis; (2) carrying out vacuum filtration and washing a fiber suspension obtained by acidolysis; (3) diluting the fiber filter residue, and pressurizing and homogenizing through a nano micro-jet homogenizer; and (4) carrying out centrifugal operation, collecting supernate to obtain CNC turbid liquid, and drying to obtain CNC. Agents used in the invention are green and environment-friendly and can be recycled, the reaction conditions are relatively mild, the process is easy to control, the operation process is simple, and the prepared product has excellent performances such as controllable specification, good dispersion stability and good thermal stability. The CNC prepared by the method has wide application prospects in biomedicine, food packaging, beauty makeup skin care products and the like.

The application discloses a preparation method of 3,4,5,6-tetrahydrophthalic anhydride by catalytic isomerization, and nitrogen-doped porous carbon is prepared by carbonizing melamine sponge, the nickel is loaded by cooperating with wetting of a surfactant and ultrasonic cavitation, and the loaded nickel catalyst is obtained by roasting and reduction. 1,2,3,6-tetrahydrophthalic anhydride is heated and refluxed in an organic solvent and catalyst to isomerize, the catalyst is recovered by filtration, and the product is obtained by cooling and crystallizing the filtrate. The method utilizes the through macroporous structure to eliminate the mass transfer resistance, and the nitrogen-anchored nickel prevents agglomeration, so that the catalyst is low in cost, recyclable and free of waste water.

The present invention provides a pedestrian crosswalk pavement snow-melting and ice-melting system using far-infrared ceramic materials, including a pressure power generation and power supply excitation device and a plurality of groups of heating plate improvement devices, wherein the pressure power generation and power supply excitation device is installed at the interface between the curbstone and the sidewalk pavement, and the plurality of groups of heating plate improvement devices are evenly installed at the lower part of the road warning paint of the road indicator line, and the pressure power generation and power supply excitation device is connected to the heating plate improvement device through an electric wire; the pressure power generation and power supply excitation device is stepped on to generate electric energy to supply power to the heating plate improvement device, and the heating plate improvement device generates heat to melt snow and ice on the pedestrian crosswalk pavement. The pedestrian crosswalk pavement snow-melting and ice-melting system using far-infrared ceramic materials described in the present invention uses the self-heating material properties of far-infrared ceramic materials in winter to give the pedestrian crosswalk zebra crossing coating practical functions, and melts the snow on the surface of the highway pedestrian crosswalk area through a matching excitation device.

The embodiment of the utility model relates to the technical field of glue removal, and provides glue removal equipment. The glue removing equipment comprises a conveying belt for bearing and conveying a workpiece to be subjected to glue removing, and a spraying assembly and a spraying assembly which are sequentially arranged in the conveying direction of the conveying belt. The spraying assembly is located above the conveying belt. The spraying assembly is located above and / or below the conveying belt. And the conveyor belt drives the to-be-degummed workpiece to sequentially pass through the spraying assembly and the spraying assembly. When the to-be-degummed workpiece passes through the spraying assembly, the spraying assembly sprays water flow with first pressure to the to-be-degummed workpiece so as to remove part of a glue layer of the to-be-degummed workpiece. When the to-be-degummed workpiece passes through the spraying assembly, the spraying assembly sprays water flow with second pressure intensity to the to-be-degummed workpiece so as to remove the residual glue layer of the to-be-degummed workpiece, and the second pressure intensity is smaller than the first pressure intensity. In the degumming process, the degumming equipment is small in environmental pollution, free of corrosion to workpieces, high in degumming efficiency and small in workpiece collision and scratching risk.

The invention relates to the technical field of microbial fermentation culture, and particularly discloses a method for producing glutamic acid through fermentation, a culture medium and application of the culture medium. According to the method for producing glutamic acid through fermentation, catechol is added into a seed culture medium and a fermentation culture medium, during fermentation production, first fed-batch liquid starts to be fed after bottom sugar is completely consumed, and second fed-batch liquid starts to be fed when the concentration of produced acid in fermentation liquid reaches 140-165 g / L; the first fed-batch liquid is a glucose solution containing propyl gallate, the concentration of glucose in the first fed-batch liquid is 68-72%, the concentration of propyl gallate is 10-50 mg / 100 g, and the concentration of residual sugar in the fermentation liquid is controlled to be smaller than 5 g / L through fed-batch of the first fed-batch liquid; the fed-batch liquid II is a sorbitol solution, and the concentration of sorbitol in the fermentation liquid is controlled to be 0.5-4g / L through fed-batch of the fed-batch liquid II. The method can improve the fermentation conversion rate and is suitable for industrial production.

The utility model relates to the technical field of jellyfish breeding assistance, in particular to jellyfish artificial breeding auxiliary equipment which comprises a U-shaped frame and a filter box, the vertical plane of the U-shaped frame is connected with the filter box, an arc-shaped cylinder is arranged at the inner ring of the U-shaped frame, a lighting temperature detection device is arranged on the upper surface of the U-shaped frame in a penetrating mode, and the lighting temperature detection device penetrates through the U-shaped frame and the arc-shaped cylinder. The lighting temperature detection device comprises a circular plate, a U-shaped handle is arranged on the upper surface of the circular plate, and the U-shaped handle is fixedly connected with the circular plate. The lighting temperature detection device is reasonable in structure, the lighting temperature detection device and the lighting temperature detection device are combined together, replacement is more convenient, installation is convenient, and the lighting temperature detection device is convenient to use. And the light illumination device of the equipment is not in contact with water, so that the possibility of corrosion of the lamp is avoided, the overall tidiness of the temperature detection device is ensured, and the possibility of pollution is reduced.

The application provides a kind of biobased degradable industrial degreasing cleaning agent and its preparation method, it is related to the field of industrial degreasing cleaning agent, it includes biobased wetting penetration component, biological emulsification curling core component, natural plant solubilization component, non-phosphorus biological chelation component, natural corrosion inhibition dispersion buffer component, environmental protection bacteriostatic low-foam auxiliary agent, deionized water carrier, core function raw material is taken from plant fermentation, natural oil, microbial fermentation product, abandon petroleum-based non-degradable auxiliary agent, realize the biodegradation of all components, build wetting+permeation+solubilization+emulsification+curling+dispersion six-element synergistic degreasing system, overcome the industry pain point that traditional water-based cleaning agent is difficult to clean thick lithium / calcium / urea-based grease, heavy oil stain 10s rapid stripping effect.

This invention discloses a structure with dual-end limiting function, specifically relating to the field of shower head technology. It includes a mounting base with a freely rotatable and anti-detachment rotating sleeve at its bottom. The rotating sleeve has a threaded hole, with a limiting block and a limiting component at each end of the hole. The limiting component includes a sealing plate and a second limiting block that tilts inward towards the threaded spiral structure. A screw is threaded into the threaded hole, with an extension at the top of the screw. A support body rotatably mounted within the mounting base can be linked with the extension via an eccentric shaft-roller, cylindrical spiral rail-pulley, or rack-gear structure. This invention prevents the screw from detaching and avoids axial failure through a dual-limiting structure. The rotating sleeve and screw work together to raise and lower the extension, enabling flexible adjustment of the shower head tilt angle. The rotating sleeve is equipped with ball bearings and anti-slip textures, and the screw, with its special dimensions and thread count design, also features a sliding retainer. This solves the problems of inconvenient adjustment, jamming, and lack of effective limiting in traditional shower head support bases, resulting in smooth adjustment, precise positioning, and safe use.

The present invention proposes an intelligent charging pile with face recognition function and a face recognition control method, which relates to the field of charging piles. It includes a charging pile body, a face recognition device, a touch screen and a code scanning device, and also includes a charging gun head. The face recognition device and the code scanning device are both arranged on the front side of the charging pile body. The charging gun head is connected to the charging pile body through a connecting line. A placement seat for placing the charging gun head is provided on the side of the charging pile body. The touch screen is arranged on the front side of the charging pile body. The face recognition device is arranged on the front side of the charging pile body. The face recognition device is used to obtain and identify face data. A shielding plate is provided on the top of the charging pile body, and the front end of the shielding plate is higher than the rear end of the shielding plate. By optimizing the charging pile structure and its face recognition control method, the intelligence of the charging pile can be effectively improved and its practical value can be improved.

The utility model discloses a cascade regulation and control wastewater hydrogen production system, which belongs to the field of electrochemistry and comprises a self-driven separator, a wastewater liquid inlet, a self-capture unit, a self-driven liquid upper layer, a self-driven liquid lower layer, an electrolytic bath and a component detector. According to the utility model, by utilizing the self-driven liquid and cascade regulation and control, organic matters in the wastewater are subjected to phase splitting to the upper layer of the self-driven liquid, inorganic matters in the wastewater are subjected to phase splitting to the lower layer, and meanwhile, water molecules in the solution in the lower layer are migrated to electrolyte in the self-capture unit, so that the organic matters and the inorganic matters in the wastewater can be completely isolated outside; the influence on electrolyte is avoided, so that high-purity hydrogen can be obtained, and no corrosion or toxicity is caused to an electrolysis system.

The invention discloses a polycarbonate screw cleaning agent and a manufacturing method thereof, and relates to the technical field of high polymer materials, the polycarbonate screw cleaning agent comprises the following components in percentage by mass: 57-63% of polycarbonate, 36.3-42.3% of filler, 0.4% of an antioxidant and 0.1% of a lubricant, and the mass percent of the lubricant is 0.3%. According to the polycarbonate screw cleaning agent, on the original basis, a foaming agent is improved, powdery alpha aluminum oxide is selected as a grinding material, meanwhile, a small amount of swelling agent is added, aluminum carbonate is foamed, so that the cleaning agent can make full contact with the interior of a screw extruder, and in the cleaning agent process, the foaming effect is good; according to the present invention, the alpha alumina grinds the carbon deposit and the stubborn impurities remaining on the screw rod and the wall surface to a certain extent, the selected alpha alumina with the fine particle size has almost no damage to the equipment, and the swelling agent can easily clean the remaining organic matters through the swelling effect, and can well directly carry the remaining organic matters through the adhesion of the resin;

The invention discloses a copper smelting method of a slag-metal double-weir non-immersion top-side collaborative injection Ausmelt furnace, and relates to the technical field of copper smelting of Ausmelt furnaces, and the copper smelting method comprises the following steps: (1) injecting coal powder and mineral powder into a molten pool through a side-blowing coal gun and a mineral gun of the double-weir and mineral-coal collaborative injection Ausmelt furnace; (2) hot air is blown through a central combustion gun lowered from the top of the Ausmelt furnace with double weir crests and mineral coal collaborative blowing, and a side blowing combustion gun is used as heat supplement; and (3) after the reaction is finished, raising the central combustion gun, recording the temperature distribution of the melt, detecting the viscosity of the molten slag, and taking a slag sample for analyzing the content of Fe3O4. The Ausmelt furnace comprises a flue, a central combustion gun, a side-blowing combustion gun, a slag hole, a side-blowing ore gun, a side-blowing coal gun and a siphon weir crest, according to the method, the problem that the viscosity of slag is increased in the conventional Ausmelt furnace copper smelting process is solved, and the production efficiency is greatly improved.

The utility model provides a kind of armoured tungsten-rhenium thermocouple, belong to temperature measurement technical field, this armoured tungsten-rhenium thermocouple, including armoured protection pipe, the tungsten-rhenium electrode being arranged in armoured protection pipe inside, insulation material being filled between armoured protection pipe and tungsten-rhenium electrode, terminal box and sealing assembly being arranged in armoured protection pipe one end, pass through double sealing structure, construct full-closed protection system, can effectively resist the invasion of high-temperature molten gas in metallurgical furnace, strong corrosive medium in chemical reaction kettle, make tungsten-rhenium electrode and alumina ceramic insulation layer exempt from corrosion, compared with traditional thermocouple service life improves 2-3 times.Simultaneously, spring-like elastic support piece and ceramic powder insulation layer form double anti-vibration structure.

The invention discloses a photovoltaic module gypsum accumulated dust cleaning agent and a use method thereof. The cleaning agent is composed of 10-40% by mass of a complexing agent, 5-10% by mass of a cleaning auxiliary agent, 0.5-2% by mass of a penetrant and demineralized water. And the complexing agent is used for complexing calcium ions in gypsum. The cleaning aid is used for increasing the reaction rate and promoting dissolution of gypsum. And the penetrating agent can accelerate the complexing agent and the cleaning auxiliary agent to penetrate into the gypsum and the gypsum-glass bonding surface, so that the dissolution reaction is accelerated. The cleaning agent can quickly dissolve gypsum, does not need to be soaked or washed for a long time, is easy to biodegrade, is easy to treat waste liquid, and is environment-friendly.