91results about How to "No need for high temperature" patented technology

A carbon nanotube paper is prepared from carbon nanotubes through adding them to acid, heating or thermal reflux, and/or ultrasonic stirring, removing impurity, diluting in water, filtering, washing the filtered cake, dispersing the carbon nanotubes in water by ultrasonic stirring, spreading on carrier, and drying. It has regular structure, high uniformity, purity and electric conductivity, and enough mechanical strength.

The invention discloses a dust blowing device for a selective catalytic reduction (SCR) denitration reactor. The dust blowing device comprises an air compressor, a buffer tank, a solenoid valve and jet pipe network unit module which are communicated in sequence; the jet pipe network unit module is positioned on catalyst units positioned in the SCR denitration reactor and jet pipes in the jet pipe network unit module are in one-to-one correspondence with the catalyst units. In the dust blowing device, a dust blowing air source is provided for the jet pipe network unit module by utilizing the air compressor; compressed air is stored and released by utilizing the buffer tank; the opening and the closing of the buffer tank is controlled by utilizing the solenoid valve; the jet pipes which are in the jet pipe network unit module and are in one-to-one correspondence with the catalyst units blow away dust in a manner of being dead against catalysts. The dry compressed air serves as a dust blowing medium, so that the normal work of the catalyst in a dry state is guaranteed. The dust blowing device has no vibration, no high temperature, no dead angle or no gathered dust residue, and has a large coverage surface when the gathered dust is cleaned by the compressed air; the service life of the catalysts is prolonged; the replacement cycle of the catalysts is prolonged; the denitration efficiency is effectively improved; an energy resource is saved.

The invention discloses a cut-wire baffle brake anti-drop device of vertical lifter, which comprises a guide rail support and a compartment. It is characterized in that: the upper part of compartment is mounted with a brake; said brake is formed by a brake beam inside the compartment and the brake rods symmetry mounted on two sides of brake beam via brake axle; the top surface inside the compartment is mounted with a cut-wire sensor; said cut-wire sensor is formed by a sensing rod, a compress plate at the lower end of sensing rod, and a sensing spring and a sensor sheath that sheathing the sensing rod; the upper end of sensing rod is guided out the top surface to connect steel wire; said compress plate is at the upper end of brake rod; the brake beam is mounted with buffers that at two sides of cut-wire sensor; the lower end of buffer is near to the brake rod; and the inner side of guide rail support is uniformly mounted with blocks. The invention has the advantages that: it will not generate high temperature and splash, and abrade work-piece, with short brake distance, high safety, and reliable operation.

The invention discloses an amorphous plasma heterojunction nano TiO2 sol having high-efficiency visible light response as well as a preparation method and an application thereof. The amorphous plasma heterojunction nano TiO2 sol is formed by taking a heterojunction structural body formed by precious metals and nano TiO2, or other semiconductor-precious metals and nano TiO2 by chemical connection as nano particles, schottky junction generated by cooperation among precious metals and nano TiO2 or other semiconductor-precious metals and nano TiO2 is used for performing resonance effects with local surface plasma to obtain the excellent visible-light photocatalysis effect, and the problem of low visible-light utilization rate of common TiO2 photocatalysts can be solved.

The invention relates to a compound ultrasonic fusion deposition additive-manufacturing device and a compound ultrasonic fusion deposition additive-manufacturing method, and belongs to the technical field of additive manufacturing. An ultrasonic enhancement device is fixed to a guide rod I and a guide rod II of an ultrasonic support platform; a moving base plate is installed on a guide rail I and a guide rail II of an X-directional guide connection system, and fixed to a synchronous belt simultaneously; the moving base plate is driven to move through an X-directional motor; and a fusion deposition additive-manufacturing system and the ultrasonic support platform are connected through a connection rod I and a connection rod II in the X-directional guide connection system. Parts with poor adhesion among fusion deposition wire materials and between the deposition wire materials and a deposition layer can be re-melted by virtue of ultrasonic vibration, and the deposition wire materials in formed parts are compounded into one piece, so that the comprehensive mechanical property of fusion deposition additive-manufactured parts, and in particular, the mechanical strength in the vertical direction of a forming axis, is remarkably improved.

The invention belongs to the technical field of green chemistry and clean energy and relates to a method for preparing reducing sugar by promoting lignocellulase to hydrolyze by ultrasonic pre-treatment in pressurized hot water. The method comprises the following steps: mixing deionized water with lignocellulose in a mass ratio of (10-100) to 1 and introducing 3-10MPa carbon dioxide or nitrogen at 80-120 DEG C; applying an ultrasonic field with the frequency being 40-60kHz and the power being 90-600W for 10-120 minutes; releasing the pressure to normal pressure within 2-10 minutes and drying; adding an 0.2M acetic acid-sodium acetate buffer solution with the pH of 4.8 to the lignocellulose, wherein the mass ratio of the buffer solution to the lignocellulose is 50 to 1; and then adding cellulase, and hydrolyzing to obtain the reducing sugar, wherein the mass ratio of the cellulase to the lignocellulose is (0.5-1.2) to 1. The method provided by the invention is time-saving, mild in condition, low in energy consumption, simple in process, low in cost, green and free from pollution.

The invention relates to a vehicle-mounted water cutting system. The vehicle-mounted water cutting system comprises a water pressurization system and a cutting system, wherein the water pressurization system is connected with an engine power takeoff and a water supply system; a grinding material mixing device is arranged between the water pressurization system and the cutting device; an overpressure protection device is arranged between the grinding material mixing device and the water pressurization system. The vehicle-mounted water cutting system has the beneficial effects that the vehicle-mounted water cutting system is directly configured and arranged on a vehicle by adopting a modular structure; an original engine of the vehicle is utilized as power, and thus the inconvenience that the power is additionally configured is prevented; the whole equipment is arranged and integrated on the vehicle, and is flexible and quick to move; without power supply or other auxiliary facilitates, the work in any environment can be realized; the cutting process is free of high temperature, open fire or static electricity, the molecular structure of a cut object is not damaged, and thermal deformation and chemical transformation can be avoided.

The invention relates to a sand mold rotary gravity mould and a casting method thereof. The mould comprises an inner structure sand core and an exterior sand mold gravity mould, wherein the exterior sand mold gravity mould comprises resin, curing agent and crude sand. The casting method includes the following steps: (1) a sand core mould comprising the inner structure sand core and the exterior sand mold gravity mould is well installed on a sand core machine; (2) the sand is mixed: resin, curing agent and crude sand; (3) the mould is heated: according to the structural sizes of the sand core and the sand mold, the mould is warmed to a proper curing temperature to manufacture the core and the mold, and residual parts on the sand core are scraped; (4) the inner structure sand core is arranged in the exterior sand mold gravity mould according to a positioning head, and rotary casting is carried out in the mode of front casting or lateral casting after mould closing; (5) after casting, the cast is taken out from the exterior sand mold gravity mould, and the time of taking the cast is determined according to the curing states of the dead head of the cast and a thicker part; and (6) the cast is processed by slinging and shot blasting. The invention can avoid the disadvantages of the traditional casting method, and has the advantages of low material consumption and lower cost.

The invention relates to a preparation method of nanofiber, wherein the method comprises the following steps of: (1) preparing a solution, wherein, after polyvinyl pyrrolidone and alcohol are mixed according to a certain proportion, stirring for 3-4 hours to obtain transparent viscosity solution, and filling the viscosity solution in a liquid storage bottle; (2) connecting the liquid storage bottle with a liquid conveying port of a spray gun through a solution input pipe, and connecting the air conveying port of the spray gun with an air compressor; (3) disposing the nozzle of the spray gun opposite to the front end of a fiber drawing cavity, starting the air compressor, and ejecting the viscosity solution into the fiber drawing cavity, wherein the liquid drops of the viscosity solution is drawn into nanofibers with the diameters of 100-300 nm at once, and the nanofibers are fallen in a collecting device from the fiber outlet of the fiber drawing cavity. With spraying fiber drawing technology, the micrometer liquid drops are finally drawn into uniform nanofibers under the effect of a temperature field formed by an iodine tungsten filament lamp so that the defect that the traditional nanofiber has low yield is solved.

The invention discloses a method for preparing nano calcium carbonate by regeneratively cycling an oyster shell. The method comprises the steps that the oyster shell is directly used as a raw material without roasting and digestion procedures; recovery and cyclic utilization are performed by utilizing a large amount of carbon dioxide generated by dissolving the oyster shell with hydrochloric acid; and nano calcium carbonate with high whiteness and high purity is obtained by an ammonia water carbonization technology. The raw oyster shell adopted by the method is extensive in source and low in cost, solves the environmental pollution caused by the oyster shell, does not generate secondary pollution, and has good popularization and application prospects.

The invention discloses a braking device of a high-speed train, which is provided with a water spray cooling device. The braking device at least comprises a brake disc, a brake pad, a brake pad heat radiating cavity, calipers, a water tank, a water inlet pipe, a tank bottom valve, a water outlet pipe, a high-pressure water pump, a four-way pipe, water delivery hoses, nozzles, locating rods and a driving mechanism. During train braking, the driving mechanism controls the calipers to clasp the brake disc, the tank bottom valve is opened, the high-pressure water pump is started, high-pressure water is sprayed out of the nozzles after entering the water delivery hoses through the four-way pipe, one path of high-pressure water is sprayed inwards through a ventilating duct, which is provided with heat radiating ribs, of the brake disc, the other two paths of high-pressure water are sprayed inwards through the heat radiating cavity specially designed at one side of a backing plate of the brake pad, fogdrops are instantly vaporized because of being heated when being in contact with a high-temperature metal surface, and a great deal of heat in water vapor is taken with air, so that the heat radiating effect of the braking device is far better than that of the traditional braking device only depending on air cooling, the brake disc and the brake pad can be always in a relatively low temperature, furthermore, the braking reliability and safety are ensured, meanwhile, the service life of the brake pad is prolonged, and the braking requirement of a higher-speed train can be met.

The invention discloses a preparation method of an Al-Doped ZnO film, which comprises the following steps of: adding AZO nano particles in a medium; ultrasonically processing a solution for 10-30 minutes to obtain uniform and dispersive nano particle seriflux; adding a coupling agent and a photoinitiator in the seriflux; after adding the coupling agent, carrying out ultrasonic treatment for 0.5-8 hours; spreading AZO nano particle seriflux on glass by using a pulling method or a spinning method and irradiating by ultraviolet light; and then carrying out heat treatment to obtain the ZAO film. The invention does not need vacuum equipment or high temperature, has simple structure, and is suitable for large-scale production.

The invention provides a method for preparing a bismuth vanadate-polyacid gas sensing composite nano-material. A prepared polyacid modified bismuth vanadate nano-rod composite gas sensitive material can be used in a photoelectric gas sensor. The gas sensitive material is a bismuth vanadate-polyacid composite nano-material which is formed by using a bismuth vanadate nano-rod as a main body and modifying with Keggin-type phosphotungstic acid. In a room temperature environment, under irradiation of a xenon lamp, the sensor has a remarkable sensing detection function for toxic nitrogen dioxide gas. The method for preparing the bismuth vanadate-polyacid gas sensing composite nano-material is simple, has low cost, can be used for effectively detecting low-concentration nitrogen dioxide gas in the air at room temperature, and is applicable to development and production of a novel high-performance gas sensor.

The invention relates to a high-power neutral electrolyte metal-air battery system and a using method thereof. The battery system comprises two or a plurality of basic cell units connected in series or in parallel, an electrolyte filtering box, a circulating pump, a control valve, an electrolyte input distributor, an electrolyte discharge manifold, a drain valve, an electrolyte overflow manifold,a control circuit, a controller, a connecting pipeline and the like. Each basic cell unit consists of a reaction box, an anode, a cathode, electrolyte, a cathode busbar and an anode busbar; and an electrolyte input port, an electrolyte discharge port and an electrolyte overflow exhaust port are formed at both sides of the reaction box. The electrolyte is neutral liquid, such as salt water, seawater and the like. The electrolyte of each basic cell unit is communicated with each other without using an electrolyte isolator. The high-power neutral electrolyte metal-air battery system and the usingmethod thereof, which are disclosed by the invention, are applicable to the high-power power utilization requirements and have the characteristics that after the anodes are used up, the anodes can bereplaced so as to reuse the high-power neutral electrolyte metal-air battery system; the high-power neutral electrolyte metal-air battery system can be stored for long time in a safe and maintenance-free mode, and is simple to start up and use; a load can be cut off at any time; the high-power neutral electrolyte metal-air battery system and the using method thereof have no pollution to the environment; and reaction precipitates can be recovered and recycled.

This invention relates to a biological material ball stove including a fan, a secondary wind pipe, a valve, a flowmeter, a supply pipe, a gasification agent pipe, a loop air pre-heating chamber, a loop air conduction chamber, a stove head, a stove body, a heat preservation layer, an inner container and biological material balls, in which, the upper part of outside of the stove is a water tank made of stainless steel, the fan is connected with the loop air pre-heating chamber at the bottom of the hearth via a gasification agent pipe, the heat preservation layer, the inner container and the hearth are orderly placed in the body, a grate is under the hearth and the stove head is above it, the loop air conduction chamber is at the bottom of the head, the secondary wind pipe and the chimney are at the outside wall of the conduction chamber with a stage along the internal wall for placing a stove cover.

A green synthesis method of an alpha-thioenamine compound includes dissolving a sulfur phenol compound, an electrolyte and an enamine compound in a solvent and powering on for reaction in the nitrogenatmosphere to obtain the alpha-thioenamine compound. A reaction equation in the synthesis method is defined in the description, wherein R1 is methyl, allyl or phenyl; R2 is phenyl of various functional groups substituted at 2-, 3-, or 4-, or a naphthalene ring, or substituted furan or substituted thiophene; Ar is phenyl of various functional groups substituted at 2-, 3-, or 4-, or the naphthalenering, or substituted thiazole, substituted oxazole, substituted thiadiazole, substituted imidazole or substituted tetrazole. The method is simple and efficient in synthesis process, high in atomic economy and environmentally friendly. The reaction operation is simple, the reaction condition is mild, and high temperature is not required.

The invention discloses a 4-methyl-2-nitroaniline synthesis method, which comprises: carrying out amino protection with ethyl chloroformate by using 4-methylaniline as a raw material to generate N-(p-toluene)ethyl carbamate; adding an oxidant and a copper salt catalyst, and carrying out a reaction for a certain time at a temperature of 50-120 DEG C in a reaction solvent by using a nitroso-containing compound as a nitrating agent to prepare a corresponding protected o-nitro-p-toluidine; and carrying out hydrolysis to obtain the target product. According to the present invention, the method hasadvantages of simple preparation process, mild reaction condition, high yield and environment protection.

The invention belongs to the field of comprehensive utilization of resources, and especially relates to a method for preparing a metal-organic framework material from metallurgical mine solid wastes.The method comprises the following steps: dissolving the metallurgical mine solid wastes by using a concentrated strong acid and a strong alkali to obtain a mixed metal salt, dissolving the mixed metal salt and the organic ligand in an organic solvent by using the organic metal as an organic ligand, and keeping the temperature constant at 70-150 DEG C for 18-30 h to synthesize the metal-organic framework material. The new method for preparing the MOF material containing valuable metal elements from the metallurgical mine solid wastes has the advantages of wide sources of raw materials, effectiveness in utilization of metallurgical slag, minerals, dust and other waste metal alloys containing valuable metal elements, simple synthesis process and mild synthesis conditions. The method is suitable for the comprehensive utilization of metallurgical slag, minerals, dusts and waste metal alloys.

The invention discloses a technology for preparing micro-nano cuprous oxide hollow polyhedrons through a reduction method on the condition that a template, an etching agent and high temperature are not needed. The technology comprises the steps that a prepared CuCl2 solution is added into a sodium dodecyl sulfate (SDS) aqueous solution prepared in advance, and a mixed solution is magnetically stirred to be uniform; a prepared NaOH solution is dropwise added into the mixed solution, and a mixed solution is magnetically stirred to be uniform; a prepared hydroxylamine hydrochloride (NH2OH.HCL) solution is quickly added into the mixed solution, magnetic stirring is performed at room temperature for 1 h, and then the micro-nano (about 400 nm) cuprous oxide hollow polyhedrons are obtained. Through reasonable technology control, preparation of the cuprous oxide hollow polyhedrons which are clear in outline, uniform in particle and good in dispersion is achieved. Compared with a traditional preparation method, the technology has the advantages that the template, the etching agent and the high temperature are not needed, simpleness and high efficiency are achieved, and the physical and chemical properties of the product are excellent and can be applied to the fields of gas sensing and photocatalysis.

The invention relates to a low-temperature difference air heat power generation method. Normal-temperature air is absorbed in atmosphere and, 65-DEG C hot air is obtained by increase of a heat pump and fed into a heat-preservation water tank with specific height, so that the temperature of the water tank can achieve 60 DEG C. A rotational structure device arranged in the water tank is provided with a thermal-operated device (1), a laminated memory alloy butterfly spring in the thermal-operated device (1) is sunk in 60-DEG C hot water from a martensite configuration under normal temperature, and is heated and changed into an austenite configuration so as to enable a variable-capacitance valve (13) of the thermal-operated device (1) to move and the buoyancy of an energy transduction tube (19) to be increased, the energy transduction tube (19) emerges from the water, the austenite configuration enters the normal-temperature atmosphere, and is evaporated and cooled so as to enable the laminated memory alloy butterfly spring to be changed into the martensite configuration once again and enter in the hot water. The process is circulating again and again, thus generating mechanical rotation movement and driving a power generator for power generation. The low-temperature difference air heat power generation method has the advantages of having exhaustible clean energy, being high-efficiency and easy to maintain, having no high temperature and no pollution and being green and environment-friendly.

The preparation method comprises the following steps: mixing activated carbon, porous graphene and PVDF (Polyvinylidene Fluoride), adding an N-methyl pyrrolidone solvent, carrying out ball-milling andstirring to prepare electrode slurry, and coating a carbon-coated aluminum foil with the electrode slurry; putting the coated carbon-coated aluminum foil into a blast drying oven for drying treatment, putting the dried carbon-coated aluminum foil into a vacuumizing drying oven for continuous treatment, and putting the carbon-coated aluminum foil on an electric double-roller machine for roller compaction to prepare a pole part; and cutting and packaging the prepared pole part to prepare the super capacitor. The method is simple in design, pollution-free in preparation process, free of high temperature and safe in process. And the cost can be reduced, large-scale production can be carried out, and wide application of the porous graphene-based supercapacitor with high energy density is realized.

The invention belongs to the technical field of jet snow removers, and particularly relates to a snow blowing nozzle of a jet snow remover. The snow blowing nozzle of the jet snow remover is characterized by comprising a fixed nozzle which is arranged on a nozzle jet of the jet snow remover, an upper nozzle adjusting piece and a lower nozzle adjusting piece which are rotatably connected with thatfixed nozzle through a sliding bearing, an upper fixed rotating shaft which is fixedly connected with the upper nozzle adjusting piece, a lower fixed rotating shaft which is fixedly connected with thelower nozzle adjusting piece, and a driving mechanism which is respectively hinged to the upper fixed rotating shaft and the lower fixed rotating shaft. The snow blowing nozzle of the jet snow remover is simple in structure and small in occupying size, and the upper and lower parts can act separately, and the high-speed air flow of the jet snow remover can be appropriately regulated according tothe actual operation situation, so that the utilization rate of the jet air flow is greatly improved, and the purging effect is improved.

The invention relates to a method for disposing discarded needles. The implementation method comprises the steps that after the discarded needles are positioned, the heads of the discarded needles areclamped; and curling is carried out toward the tails of the discarded needles for hiding the sharp parts of the discarded needles. The method adopts a non-destroying-type pretreatment method, the infection caused by the second injury of the needles is completely avoided, after the discarded needles are positioned, the heads of the discarded needles are curled for hiding the sharp parts, the operation is convenient, high temperature is not generated, heating is not carried out, violent cutting is not carried out, sparks and odor are not generated, and the problem of disposal of the discarded needles can be better solved.