131results about How to "Effective dilution" patented technology

The invention discloses a hydrodewaxing catalyst and its preparation method. With the weight of the catalyst as the reference, the catalyst contains the following components of: by weight, 5-10% of tungsten oxide, 1-5% of nickel oxide, 40-50% of nanometer ZSM-5 molecular sieve, 10-40% of macroporous alumina and the balance being a binder. The catalyst is prepared by the following steps of: firstly kneading the nanometer ZSM-5 molecular sieve, macroporous alumina and the binder to prepare a carrier, dipping loaded active metal, and finally carrying out hydrothermal treatment. The hydrodewaxing catalyst provided by the invention has a good shape-selective catalysis function and simultaneously has a good hydrofinishing function, and is especially suitable for the hydrofinishing and pour point reduction processes of a waxy hydrocarbon oil material containing high content of impurities such as sulfur, nitrogen and the like.

The invention provides a device technology configuration method for treating house refuses by using a rotary cement kiln, comprising a pre-treatment device technology configuration method and an incineration device technology configuration method, wherein the whole process of the crushing treatment of the house refuses is implemented by using the pre-treatment device technology configuration method, and a whole incineration process is carried out on the crushed house refuses by using the incineration device technology configuration method; the incineration device technology configuration comprises a double-layer power-driven flap valve, an L-shaped incinerator, a double-layer heavy punch flap valve, a vibrating conveyor and a bucket elevator; and partial tertiary air captured from a tertiary air tube of a rotary kiln enters into the L-shaped incinerator through an air intake tube and high temperature incineration is carried out on the house refuses in the incinerator, smoke generated when incineration passes through an air discharging tube and then is converged with the tertiary air tube, a loop formed by the air intake tube and the air discharging tube of the L-shaped incinerator is provided with a second high-temperature electric butterfly valve and a third high-temperature electric butterfly valve, and a first high-temperature electric butterfly valve is arranged on the tertiary air tube. Harmful gases such as dioxin can be inhibited by high-temperature environment which is generated by using the rotary cement kiln.

The invention relates to a high temperature resistant well-cementing spacer fluid and a preparation method thereof. The spacer fluid consists of: 100 parts by weight of fresh water, 2-8 parts by weight of a suspending agent, 2-10 parts by weight of a diluents, 25-400 parts by weight of a weighting agent, and 1-15 parts by weight of a flushing agent. Specifically, the suspending agent is composed of 100 parts by weight of OCMA bentonite, 2 parts by weight of hydroxypropyl guar gum and 8 parts by weight of xanthan gum; the diluent is composed of 100 parts by weight of sodium lignin sulfonate and 20 parts by weight of sulfonated tannin; the flushing agent consists of 40 parts by weight of fatty alcohol-polyoxyethylene ether, 40 parts by weight of triethanolamine oleate and 20 parts by weight of sodium tripolyphosphate; and the weighting material is barite. The spacer fluid has stable performance under 180DEG C high temperature condition, still has good rheological performance under the premise of ensuring the system good suspension stability, is compatible with conventional cement slurry and drilling fluid systems, improves the rheological properties of drilling fluid, enhances the displacement efficiency, and reinforces the cementation quality of a cement ring with a well cementation first interface and a second interface.

The invention discloses a lost circulation additive for blocking loss of a shallow casing. The los circulation additive is prepared from the following components in parts by weight: 0.1-5 parts of rapid filtration fiber, 0.5-5 parts of bentonite, 0.5-3 parts of filter aid, 0.5-3 parts of enhancer and 0.5-2 parts of delayed expansion plugging agent. The lost circulation additive has high dehydration characteristics, and can effectively resist dilution of formation water. A main component natural plant fiber has strong hydrophily and large specific surface area, so that the formed plugged zone has stronger adhesive strength on the water-wetted rock surface, the plugged zone can be effectively prevented from being damaged due to flow-back of a leakage layer, delayed expansion particles in the lost circulation additive can absorb water to expand after a solid-phase plugged zone is formed, the strength of the plugged zone is further enhanced, and an effective barrier is built for subsequent cement cementing.

The invention discloses a system and a method for treating the high-concentration landfill leachate in an aerobic composting site. The system comprises a hydraulic screen, a regulation pool, an anoxic and anaerobic pool, an upflow anaerobic pool, an anoxic pool, a first aerobic pool, a second aerobic pool, a secondary sedimentation pools, an immobilized microorganism aerating biological filtering pool, an MBR (membrane biological reaction) pool, a nanofiltration system, a decolourising pool and a charcoal canister which are connected in sequence. The raw landfill leachate is treated by the hydraulic screen, the regulation pool, the anoxic and anaerobic pool, the upflow anaerobic pool, the anoxic pool, the first aerobic pool, the second aerobic pool, the secondary sedimentation pools, the immobilized microorganism aerating biological filtering pool, the MBR pool, the nanofiltration system, the decolourising pool and the charcoal canister of the system in sequence so that the effluent can be recovered. The effluent can meet the requirement for the limit of the discharge concentration of the water pollutant in the special region in the Domestic Waste Landfill Site Pollution Control Standard GB16889-2008.

The invention provides a method for mixing and processing wash oil and direct coal liquefaction oil, which includes the following steps: (a) mixing the wash oil and the direct coal liquefaction oil to be mixed with hydrogen, and enabling the mixture to enter a mixed oil hydrogenation reactor; (b) enabling mixture of the wash oil, the direct coal liquefaction oil and the hydrogen in the step (a) to be contacted with hydrofining catalyst to be subjected to a reaction in the mixed oil hydrogenation reactor; and (c) separating and fractionating objects obtained from the reaction of step (b) and discharged from an outlet of the mixed oil hydrogenation reactor to obtain light distillate oil, medium distillate oil and heavy distillate oil. The heavy distillate oil is mixed with a part of the medium distillate oil to serve as hydrogen-donor solvent, and the light distillate oil is mixed with the rest medium distillate oil to obtain liquefaction product raw oil. The method can effectively convert coal tar and wash oil, obtains high-performance hydrogen-donor solvent and diesel products with high cetane number, and can avoid a phenomenon of speeding up deactivation of catalyst caused by overlarge reaction temperature rise in an independent hydrogenation process for the wash oil.

The invention relates to a five-drill air inlet and outlet type coal mining machine, applicable to mining of a coal bed with pitch of 0-25 degrees, thin and extremely thin coal beds containing gas and a liberation coal bed. The five-drill air inlet and outlet type coal mining machine mainly comprises a hydraulic motor, a bracket, a thrust cylinder, a transmission case and a spiral bit. Five drills are transversely arranged, thus mining efficiency of the coal mining machine is improved; and three intermediate drills are arranged in advance, and mining energy consumption is reduced by utilizing a crisp pressing effect of the coal bed. A machine set is provided with a blast fan and an induced-draft fan to realize ventilation of a working surface, and gas concentration is diluted, thus the machine set can mine a high-gas coal bed. A transmission drill rod and a ventilation drill rod convey coal at the same time, thus coal conveying efficiency of the coal mining machine is greatly improved. The transmission case adopts a bevel gear driving manner, a transmission case body is of a sectional type structure, volume of the transmission case is reduced, and coal passing efficiency of the transmission case is improved, thus the drills are avoided from being blocked and turning. The machine set can realize ventilation of a mining working surface, efficient mining of high-gas thin and extremely thin coal beds is realized, and the machine set has high working stability, reasonable structural arrangement, strong component interchangeability and easiness in maintenance.

The invention discloses a preparation method of a flame-retardant type wood-plastic composite. The preparation method includes the steps of adding plant fiber to a reaction still, adding an aluminum sulfate solution or a magnesium sulfate solution over stirring, dropwise adding ammonia water, standing for 15-40 min, conducting drying at 80 DEG C after even stirring, obtaining flame-retardant modified plant fiber, fusing, mixing and forming 10-250 parts of flame-retardant modified plant fiber, 90-120 parts of plastic and 1-10 parts of compatilizer, and obtaining the flame-retardant type wood-plastic composite. The heat release speed is low and the smoke yield is small when the wood-plastic composite combusts; compared with a composite without fire retardant, the flame retardance performance of the composite is remarkably improved; the method is easy to operate, and production cost is low.

In its broadest embodiment the present invention relates to the use of a microemulsion comprising a surfactant, an aqueous phase and droplets dispersed in said aqueous phase, said droplets comprising an essential oil or an active thereof, and said droplets having a particle size of less than 100 nanometers, for disinfecting a surface. The present invention further encompasses a microemulsion suitable for disinfecting a surface, comprising a surfactant, an aqueous phase comprising a bleach, and droplets dispersed in said aqueous phase, said droplets comprising an essential oil or an active thereof, and said droplets having a particle size of less than 100 nanometers.

The invention relates to a dilution device, in particular to a uniform papermaking additive dilution device used for papermaking. In order to achieve the technical purpose that by means of the uniform papermaking additive dilution device used for papermaking, water can be uniformly injected into a papermaking additive so that the papermaking additive can meet dilution requirements, the uniform papermaking additive dilution device comprises a dilution tank and the like. A material outlet pipe is connected with the left side on the bottom of the dilution tank, a valve is arranged on the material outlet pipe, a driving mechanism is connected with the upper portion of the left wall of the dilution tank, a material feeding mechanism is connected with the inner wall of the dilution tank, and the material feeding mechanism is connected with the driving mechanism. By means of the uniform papermaking additive dilution device, the dilution speed of the papermaking additive is increased, the clear water can be uniformly injected into the papermaking additive, the papermaking additive dissolution or dilution effect is improved, convenience is brought to work, moreover, tools and parts are not affected with damp, dust prevention is achieved, and the effect that the papermaking additive is uniformly and effectively diluted or dissolved is achieved.

The invention provides a water pre-injection type double-seal pedestal pan. The pedestal pan comprises a water supply device, a pedestal pan main body and a mechanical sealing valve; the pedestal pan main body is provided with a trap, the trap is used for sealing the stored water, and the water sealing depth of the trap is 0 to 60 millimeters; the mechanical sealing valve is positioned below the trap and is not in direct contact with the sealed water in the trap, and the mechanical sealing valve is connected to a blow-off port of the pedestal pan main body; the water supply device is used for providing a flushing state and a water pre-injection state; in the water pre-injection state, the mechanical sealing valve is closed, and the pre-injected water is stored; in the flushing state, the mechanical sealing valve is opened, and sewage is drained; and in the water pre-injection state, the water sealing depth of the water pre-injection type double-seal pedestal pan is more than 55 millimeters. The double-seal pedestal pan is simple in manufacture and reliable in performance, and has optimal sealing performance, pollution discharge performance, water-saving performance and using performance.

The invention relates to a dilution device for straw papermaking slurry. The dilution device comprises a dilution trough, wherein a feeding hole is formed in the top of the dilution trough, a discharging hole is formed in the bottom of the dilution trough, a rotating shaft is mounted at a transverse middle axis in the dilution trough, first driving equipment is arranged at one end of the rotatingshaft, the rotating shaft is surrounded by spiral blades, and a plurality of water nozzles are formed in the upper part of the dilution trough; a feeding trough body is mounted on the feeding hole andcomprises an upper-layer crushing trough and a lower-layer filtering trough, a crushing roll with crushing teeth is transversely arranged in the crushing trough, one end of the crushing roll is connected to second driving equipment, and a discharging hole communicated with the filtering trough is formed in the bottom of the crushing trough; and the filtering trough is used for filtering crushed slurry in a screen net filtration manner. The dilution device can meet the requirements on the conveying of the straw papermaking slurry, the agglomeration of the slurry can be reduced, the dilution can be realized, and the dilution uniformity is high.

The invention provides a production method of a polyurethane composite for shoe materials. The production method generally includes the steps: (1) hydrolyzing ethyltrichlorosilane prior to reacting with potassium hydroxide serving as a catalyst to obtain POSS (polysilsesquioxane); (2) subjecting the POSS, propylene oxide, dipropylene glycol, dibromo butyl diol and carbon dioxide to reaction through a DMC catalyst so as to obtain PPC (polypropylene carbonate); (3) uniformly mixing the PPC, a surfactant, a catalyst, an opening agent, a chain extender and a forming agent to prepare a mixture; (4) mixing isocyanate with the mixture prior to casting, demoulding and curing so as to obtain the polyurethane composite for the shoe materials. The polyurethane composite prepared through the method has good flame retardancy and heat resistance.

The invention relates to the technical field of pipeline dredging, and discloses a municipal pipeline dredging device and a use method thereof. The municipal pipeline dredging device comprises a box body, wherein two first rotating shafts are rotatably installed at the bottom of the box body, two rolling wheels are fixedly installed on the outer sides of the two first rotating shafts, a water tank is fixedly installed in the box body, a water pump is fixedly installed on the top of the box body, one end of a water pipe and one end of a hose are fixedly installed at the bottom and on one side of the water pump respectively, the other end of the water pipe extends into the water tank, the other end of the hose fixedly communicates with a spray head, a motor is fixedly installed on one side of the water tank, and one end of a second rotating shaft is fixedly connected to an output shaft of the motor. The municipal pipeline dredging device has the advantages of reasonable and clever structural design and convenience in use, and sludge in a municipal pipeline can be effectively diluted, so that the sludge can automatically circulate, and the dredging efficiency is improved.

The invention discloses a medium-voltage fire-resistant power cable, which comprises a cable core, wherein the cable core is formed by twisting a plurality of wire cores; each wire core comprises a conductor, a shielding layer, an insulating layer and an insulating shielding layer; the shielding layers, insulating layers and the insulating shielding layer are arranged outside the corresponding conductors; each conductor is formed by twisting a plurality of copper core conductors; a thermal insulating layer is also arranged outside each insulating layer; one insulating shielding layer is arranged outside each thermal insulating layer; a metal shielding layer wraps the outside of each insulating shielding layer; a fire-resistant layer is arranged outside each metal shielding layer; the partsamong the plurality of wire cores are filled with fillers; a ceramic fiber tape, an adiabatic cooling layer, a steel tape firestop layer, an oxygen barrier layer, an inner sheath and an outer sheathwrap the outside of the cable core; and the outer sheath wraps the inner sheath through a lubricating layer. The medium-voltage fire-resistant power cable is simple in structure, and has good flame retardant property and fire resistance; the voltage level of the cable is improved on the basis of ensuring the flexibility and the large-length processing performance of the cable; and safe and reliable operation of a power system is ensured.

The invention discloses an abdominal drainage tube, comprising an outer drainage tube and an inner irrigating tube; one end of the inner irrigating tube is provided with an inflating balloon and is inserted into the outer drainage tube, the other end of the inner irrigating tube is provided with an irrigating tube, a vent tube and an air access tube communicated with the inflating balloon, a drainage passage is formed between the inner wall of the outer drainage tube and the outer wall of the inner irrigating tube, and the sidewall of the outer drainage tube is provided with a plurality of side drainage holes. Protections such as the inner irrigating tube and the inflating balloon are arranged in the outer drainage tube, good anti-blocking effect can be achieved, effective continuous irrigation and drainage are achieved, problems due to the drainage tube being placed not in position due to tube change for blocking problem are avoided, frequently adjusting the position and direction of the drainage tube is not required, and both patients' pain and workload of medical staff are relieved.

A spraying environment-friendly energy-saving anti-explosion fan based on a shaft sump water source comprises a water tank substrate; a water wheel device is arranged on the water tank substrate and is connected with a wind wheel device by a belt; a high-pressure water spraying device is connected with the water wheel device and the wind wheel device; the technical scheme of taking the shaft sump water source as a power source and combining the functions of wind feeding and spraying of a high-pressure water spraying device, the water wheel device and the wind wheel device is adopted; the defects of high frequency of gas and coal dust explosion caused by electric sparks of a motor, high investment cost, complete demand on the system auxiliary project, large machine noise, poor radiating performance, short service life, low production efficiency, severe production labor environment, easily caused occupational diseases of operation staff and severe coal source waste of the existing coal-mining equipment used for the high-gas shaft are overcome; and the spraying environment-friendly energy-saving anti-explosion fan based on the shaft sump water source is suitable for various ventilation equipment for mine excavation, particularly the ventilation equipment for excavation of the high-gas protruded shaft coal layer.

An underground fuel gas pressure adjusting device comprises a blow-down pipe, an upper box, a lower box and a pressure adjusting core, wherein the upper box, the lower box and the pressure adjusting core are arranged under the ground. A plurality of interfaces are welded to the blow-down pipe. The upper box and the lower box are assembled into one. A diffuse interface and a check valve interface are welded around the upper box and connected with an interface in a diffuse pipe through a metal hose. The lower box comprises an inlet valve, an inlet pipe, an outlet pipe, an outlet valve, a pressure adjusting device, a filtration cutting-off device, a differential gauge, an inlet blow-down valve, an outlet blow-down valve, an inlet pressure gauge and an outlet pressure gauge. The inlet valve isconnected with one end of the inlet pipe, the other end of the inlet pipe is welded to the lower box, the outlet valve is connected with one end of the outlet pipe, the other end of the outlet pipe is welded to the lower box, and the pressure adjusting device and the filtration cutting-off device are correspondingly and independently installed in the lower box. The underground fuel gas pressure adjusting device is compact in structure and safe and reliable in using, and fuel gas pressure adjusting and stabilizing, parameter display and overpressure diffuse cutting-off can be achieved.

The invention relates to a pesticide wastewater treatment technology. The pesticide wastewater treatment technology comprises the following steps: collecting and treating pesticide wastewater to be treated by class, remixing, diluting the pesticide wastewater till the COD content is 1800-2200mg / L and the NH3-N content is 150-250mg / L by using surface water and domestic food processing wastewater, and adjusting the pH of the diluted wastewater to 7.5-8.5; treating the diluted pesticide wastewater by an A / O technology, enabling the pesticide wastewater treated in the previous step to enter an ozone tower for advanced oxidation, and oxidizing phosphorus in the water into phosphate (PO4<3->); enabling the pesticide wastewater treated in the previous step to enter a moving bed biofilm reactor, enabling the oxidized wastewater to enter a coagulation tank, adding CaO into the coagulation tank, adding polyacrylamide after completion of a reaction, and completing precipitation to obtain effluentwater, namely the successfully treated pesticide wastewater. The pesticide wastewater treatment technology has the advantages of simple operation, a good phosphorus removing effect, a stable effect,and no secondary pollution caused by re-release of the phosphorus.

The invention discloses an automobile cable insulating material and a preparation method thereof. The automobile cable insulating material is characterized by being prepared by, by weight, 3-6 parts of EVA resin, 2-4 parts of anhydrous lithium chloride, 90-100 parts of polyvinyl chloride, 10-15 parts of magnesium hydrate, 5-10 parts of antimony trioxide, 10-14 parts of nanometer clay, 0.3-0.7 part of silane coupling agent kh550, 0.5-1 part of polyvinyl alcohol, 0.1-0.3 part of sodium dodecyl benzene sulfonate, 0.5-2 parts of sodium bicarbonate, 2-5 parts of styrene, 0.02-0.05 part of potassium persulfate, 10-15 parts of dioctyl terephthalate, 3-5 parts of tributyl citrate, 1-3 parts of hard wax, 3-5 parts of fumed silica, 2-4 parts of wood flour and an appropriate amount of water. The cable material can meet the requirement for environmental friendliness and has good comprehensive performance, the preparation method is simple and controllable, and the cost is low.

The invention discloses an intelligent bathroom louver. The intelligent bathroom louver comprises a louver body and a fuel gas monitoring device. The fuel gas monitoring device comprises an MCU, a fuel gas concentration sensor, a louver angle sensor, a louver blade angle electric control mechanism, a display screen, an audible and visual alarm and a power module. The fuel gas concentration sensor, the louver angle sensor, the louver blade angle electric control mechanism, the display screen, the audible and visual alarm and the power module are connected with the MCU. A stepping motor and a driving circuit of the stepping motor are integrated in the louver blade angle electric control mechanism. A pull line of the louver body is driven by the stepping motor to adjust the angle of the louver. By means of the intelligent bathroom louver, threat caused when fuel gas in a bathroom is leaked can be effectively avoided, and the safety performance is high.

The invention relates to a ventilation method for an open reaction groove tank in a large space workshop. The replacement ventilation provided by the invention adopts the method that the fresh air is fed from the upper part of the reaction tank; the harmful gas is exhausted from the lower part of the reaction tank, so as to form a converse airflow distribution; supposed the harmful gas is distributed in closed space around the reaction tank; the distribution quantity of the harmful gas is calculated; the air replacement quantity for diluting the harmful gas is calculated according to the distribution quantity of the harmful gas. Compared with the general ventilation, the entire displacement quantity of the displacement ventilation method is saved by a half; thereby, the energy consumptionof the ventilation system is reduced; the upper feeding and lower exhaust airflow distribution can effectively dilute the concentration of the harmful gas and ensures the concentration of the harmfulgas to be lower than the highest allowed concentration of the harmful gas in the operation area; meanwhile, the erosion on the construction rigid frame structure is reduced.

The invention discloses a radial flow valve element underground pressure regulating device. The radial flow valve element underground pressure regulating device comprises a diffusion tower and a pressure regulating device arranged underground. A base of the diffusion tower is buried underground, an integrated electronic instrument box is arranged at the overground position of the diffusion tower, and a pressure recorder and pressure sensors are mounted in the integrated electronic instrument box. The pressure regulating device comprises a pressure regulating valve body, a pressure regulating instrument box and a box cover, the pressure regulating valve body is arranged on the lower portion of the pressure regulating instrument box, and the pressure regulating instrument box comprises a connecting bottom disc, an inlet pressure meter, a differential pressure gauge, a director, a diffusion valve, a stop valve drive device, a drain valve and an outlet pressure meter, wherein the inlet pressure meter, the differential pressure gauge, the director, the diffusion valve, the stop valve drive device, the drain valve and the outlet pressure meter are mounted on the connecting bottom disc. The pressure regulating valve body comprises a pressure regulating valve element, an inlet valve, an inlet pipe, an outlet pipe and an outlet valve. The radial flow valve element underground pressure regulating device aims at achieving the purposes of being compact in structure, safe and reliable, has the functions of gas filtering, overpressure diffusion, overpressure cutting off and pressure regulating, can also achieve data external display and remote transmission, and overcomes the defect that an underground pressure regulating device is inconvenient to patrol.

The invention discloses a multifunctional soil dilution device for soil detection. The device relates to the field of soil detection and comprises a base, a protective shell is arranged at the top endof the base, a cleaning mechanism is installed at the top end of the protective shell, a liquid adding mechanism is arranged at the top end of the protective shell and located on one side of the cleaning mechanism, and a diluting mechanism is installed in the cleaning mechanism. According to the invention, an ultrasonic head, a clamping groove and the arc top are arranged; when a test tube is moved, and when the test tube reaches the upper part of the arc top, due to a through hole in the bottom end of the clamping groove, the test tube can be slightly jacked up from the clamping groove by the circular arc, and the weight of the test tube is applied to the arc top; after liquid needing to be diluted is dripped into the test tube, the ultrasonic head is started, and vibration generated bythe ultrasonic head is transmitted into the test tube through the arc top, so that the test tube is vibrated, the vibration is transmitted into the test tube, a solution in the test tube is vibrated,and the problem of poor stirring efficiency is effectively solved.

The invention discloses a method for removing residual pharmaceutical ingredients in oxytetracycline pharmaceutical dregs by ultrasonic wave, comprising the following steps of: A, heating up oxytetracycline wet pharmaceutical dregs to solidify protein, so that the protein is not influenced by ultrasonic wave; B, cooling the oxytetracycline wet pharmaceutical dregs into normal temperature, adjusting the pH of the oxytetracycline wet pharmaceutical dregs into 0.5-1.0 by hydrochloric acid, and evenly stirring the wet pharmaceutical dregs; and C, putting the evenly-stirred wet pharmaceutical dregs into a container with normal pressure and ultrasonic environment to carry out ultrasonic wave radiation, and degrading and invalidating the oxytetracycline ingredient in the wet pharmaceutical dregs by the acoustic cavitation effect of the ultrasonic wave. The method is quick, low-cost and environment-friendly to treat the oxytetracycline pharmaceutical dregs, and is good in treatment effect, so that the obtained product is heavy in weight and high in use value.

The invention discloses a method of realizing photoetching of a rewiring metal layer. The method comprises steps: a semiconductor substrate is provided, wherein a hole passing through the partial thickness is formed in the semiconductor substrate, and the surface of the inner wall of the semiconductor substrate and the hole is coated with a metal layer; spin coating of a photoresist is carried out on the surface of the semiconductor substrate; the spin-coating photoresist is processed to enable the photoresist to fill the hole; after the photoresist fills the hole, soft baking, exposure, development and hard baking are carried out, and a patterned photoresist layer is formed; and with the patterned photoresist layer as a mask, the metal layer is etched to form a rewiring metal layer. bubbles formed in the hole when spin coating of the photoresist is carried out are eliminated, the quality of the formed patterned photoresist layer is improved, the yield of the subsequently-formed rewiring metal layer is high, and the yield of semiconductor products is high.

The present invention relates to a hydrogenation catalyst and a preparation method, and a 1,2-pentanediol preparation method. According to the present invention, two reactors are connected in series,the first reactor uses a Cu-Cr-Si-Ca-Li catalyst to hydrogenate furfural to generate furfuryl alcohol, and the second reactor uses a Ru-Cu-Cr-Si-Ca-Li catalyst to carry out hydrogenolysis on furfurylalcohol to generate 1,2-pentanediol, wherein the material is circulated so as to easily avoid the deposition of the tar generated by the side reaction on the surface of the catalyst; and with the process, the high furfural conversion rate and the high yield of 1,2-pentanediol can be obtained, the side reaction can be effectively inhibited, and the service life of the catalyst is long.

The invention discloses a production method and system for flame-retardant self-permeable tipping base paper used for cigarettes. The production method comprises the following steps: S100, beating: beating needle pulp by a double-disc refiner with a beating concentration being 65-750 SR and wet weight being 7-9 g, defibering eucalyptus pulp by the double-disc refiner with a pulping concentration being 15-200 SR and wet weight being 1-2 g, mixing the treated needle pulp and eucalyptus pulp according to a weight ratio of (30-35%): (65-70%) to prepare combined pulp, and adding calcium carbonate accounting for 30-50% of the total weight of the combined pulp and a wet strength agent accounting for 1-1.4% of the total weight of the combined pulp into the combined pulp to prepare a mixed pulpingliquid; S200, papermaking: carrying out papermaking and forming with a vat machine to form uniformly interlaced natural pores; S300, drying: carrying out drying in a plurality of groups of drying cylinders, and carrying out coating with a composite mixture of oxidized starch and acrylic resin via a surface sizing agent applying machine during drying to treat the surface performance of a paper sheet; S400, calendaring: finishing the surface of dried paper via a soft calendaring machine; and S500, printing: printing a flame retardant on the reverse side of the paper by using a photogravure press. With the production method and system for the flame-retardant self-permeable tipping base paper, the prepared tipping base paper has both high air permeability and flame retardant properties, wherein an air permeability variable coefficient is smaller than or equal to 7%, and the rate of automatic extinguishing reaches 100%.

The invention discloses a high-performance cable sheath material and a preparation method thereof. The material is characterized by being prepared from the following raw materials by weight: 3 to 6 parts of EVA resin, 2 to 4 parts of anhydrous lithium chloride, 90 to 100 parts of polyvinyl chloride, 10 to 15 parts of magnesium hydroxide, 5 to 10 parts of antimony trioxide, 10 to 14 parts of nanometer clay, 0.3 to 0.7 part of a silane coupling agent kh550, 0.5 to 1 part of polyvinyl alcohol, 0.1 to 0.3 part of sodium dodecyl benzene sulfonate, 0.5 to 2 parts of sodium bicarbonate, 2 to 5 parts of styrene, 0.02 to 0.05 part of potassium persulfate, 10 to 15 parts of dioctyl terephthalate, 3 to 5 parts of polychloroprene, 2 to 4 parts of aluminum powder, 3 to 5 parts of stearic acid, 3 to 4 parts of epoxy linseed oil and a proper amount of water. The sheath material prepared by using the method in the invention has the advantages of excellent performances in all aspects, good mechanical property, low cost, long service life and extensive application prospects.

The invention relates to a polyurethane poured self-heat-preservation wall body and a manufacturing and shaping method thereof, and belongs to the technical field of production of flame-resistant polyurethane energy-saving materials and energy saving of buildings. High-temperature resistant inorganic hybrid melamine resin polyalcohol or polyalcohol etherified melamine resin, an emulsifying agent, a composite catalyst, a phosphate ester fire retardant, and a foaming agent such as water or water glass, are used as main raw materials, the raw materials are stirred and dispersed so that combined polyether is prepared, and then the combined polyether and polymerized isocyanate MDI are foamed on a sheet material machine, a spraying machine and a pouring machine so that an environmental-friendly full water foamed B1-level flame-resistant inorganic hybrid melamine polyurethane hard bubble material is obtained; and the inorganic hybrid melamine polyurethane hard bubble material is poured between an inner wall body and an outer wall body, so that a polyurethane hard bubble heat-preservation sandwich layer is formed. The hard bubble material disclosed by the invention does not contain a low-boiling hydrocarbon compound namely fluorochlorohudrocarbon or HCF compounds, is foamed with water, does not destroy an ozone layer, does not generate greenhouse effects, and is environmental-friendly and excellent in flame resistant properties; and the flame resistant properties are improved by at least 20%, and the oxygen index of the hard bubble material is more than 30%.