21results about How to "Eliminate emissions" patented technology

The invention discloses a high-performance aluminum nitride ceramic rapid sintering method, which belongs to the technical field of ceramic materials, and comprises the following steps: preparing a ceramic raw material according to a formula: uniformly mixing high-purity aluminum nitride powder, a sintering aid, an anti-hydrolysis agent and a solvent, and drying in a nitrogen atmosphere, the dosage ratio of the high-purity aluminum nitride powder to the sintering aid to the anti-hydrolysis agent is 1: (1%-3%): (0.5%-1.5%); the uniformly mixed aluminum nitride powder is subjected to hot pressed sintering for 10-60 min in a neutral or reducing atmosphere at the temperature of 1650-1850 DEG C and the pressure of 20-30 MPa, and the density of the aluminum nitride powder reaches 99% or above; and re-sintering the ceramic: sintering the primarily sintered aluminum nitride ceramic for 1-6 hours at the temperature of 1850-2000 DEG C and normal pressure in a reducing atmosphere. The prepared aluminum nitride ceramic not only has high heat-conducting property, but also is high in sintering efficiency, meanwhile, the problem that waste gas is generated in the degreasing process is avoided, and environmental protection is facilitated.

The invention belongs to the technical field of aeronautical materials, and particularly relates to a PEI modified material containing a high-temperature composite dispersion system as well as a preparation method and application of the PEI modified material. The PEI modified material containing the high-temperature composite dispersion system provided by the invention is prepared from the following raw materials: polyetherimide resin, titanium dioxide, carbon black and dispersing agents (a coupling agent and polyamide wax). The PEI modified material containing the high-temperature composite dispersion system provided by the invention can realize efficient and uniform dispersion and color regulation and control of pigments in a high-viscosity and strong-polarity system, and has excellent heat resistance, mechanical property and flame retardant property, and interior structural parts prepared from the PEI modified material meet the comprehensive requirements on light weight, attractiveness and durability in the aviation field.

The invention relates to a double heat accumulating type heating furnace and method for ammonia hydrogen-doped combustion, and belongs to the technical field of heat accumulating type heating furnaces. The double heat accumulating type heating furnace comprises a heat accumulating type combustor system, and a fuel channel / flue gas channel and an air channel / flue gas channel are symmetrically arranged on the two sides of a furnace body of the heating furnace; a first heat storage chamber filled with a fuel channel heat storage body is arranged in the fuel channel / flue gas channel, and a second heat storage chamber filled with an air channel heat storage body is arranged in the air channel / flue gas channel; the gas supply system is connected with the fuel channel / flue gas channel and the air channel / flue gas channel through a reversing system, and ammonia fuel and combustion-supporting air are alternately introduced into the gas supply system; the smoke exhaust system is connected with the fuel channel / smoke channel and the air channel / smoke channel through a reversing system and alternately exhausts smoke; and an ammonia decomposition catalyst layer is loaded in the first heat storage chamber. According to the invention, flue gas waste heat is utilized to drive ammonia gas to crack to produce hydrogen, stable combustion and low-nitrogen emission of ammonia-hydrogen mixed fuel are realized, and thus energy conservation and emission reduction of an industrial furnace are realized.

The invention relates to the technical field of nuclear power, and provides a reactor passive starting device and a reactor passive starting method in order to reduce or eliminate a blind area range during passive starting of a nuclear power reactor. The device comprises a detector arranged in an out-of-reactor detection duct and a neutron channel box arranged in a descending section coolant layer between a pressure vessel and a hanging basket of a reactor, wherein the neutron channel box is close to the out-of-reactor detector; when the neutron channel box is a hollow channel, the passive starting method of the reactor comprises the following steps: in the starting process of the reactor, keeping that the neutron channel box is filled with high-pressure gas, keeping that a coolant does not circulate in the neutron channel box, and keeping that the coolant still circulates in other areas between the hanging basket and the pressure vessel; after the critical start of the reactor is completed, injecting a coolant into the neutron channel box; according to the method, the critical monitoring blind area in the critical starting process of the first-cycle reactor is eliminated, and blind-area-free passive starting of the first-cycle reactor is realized.

The present invention relates to the technical field of film-forming descaling agents, and in particular to a boiler water treatment agent based on polyamines, a preparation method thereof, and a use method thereof. The raw materials for preparing the boiler water treatment agent include: polyamines and composite chelating agents, and the molar ratio is 1: (4-6). The boiler water treatment agent provided by the present invention has a wide applicable temperature and pressure range, can withstand extreme conditions of up to 600°C and 17.8MPa, has excellent film-forming performance, can form a denser and more stable protective film layer on the metal surface, and provides reliable anti-corrosion protection. The corrosion rate of carbon steel in boiler water is as low as 0.12g / (m 2 h).

The present invention relates to the technical field of sludge treatment, in particular to a sludge disc drying system and a drying process, comprising a disc dryer, wherein at least two feeding ports and a carrier gas inlet and a carrier gas outlet are arranged at the upper part of the disc dryer, wherein the carrier gas outlet is connected to a cyclone separator, wherein the upper outlet of the cyclone separator is connected to the lower inlet of a condenser, and the lower outlet of the condenser is connected to a wastewater delivery pump and a sewage collection tank in sequence; wherein the upper outlet of the condenser is connected to a demister, wherein the first outlet of the demister is connected to the lower inlet of the condenser; wherein the second outlet of the demister is connected to an exhaust fan and a carrier gas inlet in sequence; wherein the lower outlet of the cyclone separator is connected to a first screw conveyor, wherein the outlet of the first screw conveyor is located above a scraper conveyor; wherein the lower outlet of the disc dryer is connected to the inlet of a post-cooling device, wherein the solid material outlet of the post-cooling device is located above the scraper conveyor, and the scraper conveyor is connected to a bucket elevator, a second screw conveyor and a dry sludge bin in sequence.

The application discloses a high-performance aluminum nitride ceramic rapid sintering method and belongs to the technical field of ceramic materials, and comprises the following steps: preparing ceramic raw materials according to a formula: uniformly mixing high-purity aluminum nitride powder, a sintering aid, a hydrolysis-resistant agent and a solvent, and drying under a nitrogen atmosphere; the ratio of the high-purity aluminum nitride powder, the sintering aid and the hydrolysis-resistant agent is 1:1%-3%:0.5%-1.5%; primary sintering of the ceramic: heat-press sintering the uniformly mixed aluminum nitride powder under a neutral or reducing atmosphere at 1650-1850 DEG C and a pressure of 20-30 MPa for 10-60 min, so that the density of the aluminum nitride powder reaches more than 99%; secondary sintering of the ceramic: sintering the primary-sintered aluminum nitride ceramic under a reducing atmosphere at 1850-2000 DEG C under normal pressure for 1-6 h. The prepared aluminum nitride ceramic not only has high heat conduction performance, but also has high sintering efficiency; meanwhile, the problem of waste gas generated in the degreasing process is avoided, and the environment is protected.

The application discloses a rotary fluid heating device, both ends of a driving shaft are rotatably connected in a bearing seat, at least one rotating disc is installed in the middle of the driving shaft, a stator sleeve is installed on the driving shaft, the stator sleeve is arranged on the outer circumferential side of the rotating disc, a gap is arranged between the stator and the rotating disc, and the gap forms a closed space, at least one liquid inlet is arranged on one side end cover of the stator, at least one liquid outlet is arranged on the other side end cover of the stator, the liquid inlet and the liquid outlet are communicated with the closed space, and closed fluid is arranged in the closed space. The motor drives the rotor to rotate, part of the fluid in the closed space is converted into high-speed rotating fluid, the kinetic energy is converted into heat energy by using the cavitation phenomenon, the fluid is heated to the required temperature, the device can be used in places requiring hot water and steam-water mixture mixed with water vapor, and the device can also solve the problem that liquid, such as flammable, explosive and toxic liquid, cannot be heated by using open fire and electricity, the pollution emission generated by using fuel heating is eliminated, and the safety and reliability are improved.

The invention relates to the technical field of automobile lamps, and provides an automobile lamp outer lens, an automobile lamp and a preparation method suitable for the automobile lamp outer lens, and the method comprises the following steps: S1, printing a required black pattern on a film structure through a mimeograph technology; s2, the film structure obtained after mimeographing is placed in a pressing mold to be pressed into a needed outer lens shape; s3, the pressed film structure is put into an injection molding mold, the injection molding mold is controlled to be closed, and a substrate material is injected to form a substrate layer on the film structure; s4, the product is taken out of the injection molding mold and placed in annealing equipment to be subjected to annealing treatment; and S5, the product is taken out from the annealing equipment after being annealed. Compared with the prior art, the problems that extra hardening coating needs to be carried out and a pure PMMA material is poor in impact resistance are solved, the cost is low, and the light transmittance is high.

The utility model relates to a zero carbon heat supply system based on green electricity and power grid cooperation belongs to the field of energy -conserving and environment -protecting technology, sewage heat exchanger provides heat source for electric compression type heat pump evaporation side, electric compression type heat pump condensing side is provided with the medium outlet pipeline and the medium inlet pipeline of heating to be waited for, electric compression type heat pump compressor and green electricity system electricity is connected. Through the collaborative design of the heat storage unit and the liquid return storage unit, the day and night heat supply load is effectively balanced. During the daytime working condition, the heat storage unit stores the excess heat generated by the heat pump, and the heat storage is controlled through the first valve and the night heat supply circulating pump. When the green electricity supply is insufficient at night, the heat storage unit releases heat, and the liquid return storage unit collects low-temperature liquid return to maintain medium circulation. At the same time, the inverter is connected to the power grid to realize "off-grid / grid-connected" dual mode, and the power storage unit ensures power stability.

The present invention specifically relates to a boiler system, which includes a boiler, a heat source supply device and a pipeline assembly. The boiler includes a furnace body, which has an air inlet, an air outlet, and an output port for outputting a heat carrier. The heat source supply device is sealed and connected to the air inlet, and the heat source supply device has a plasma generating assembly and an air inlet assembly, and the plasma generating assembly is used to ionize the working gas. The air inlet assembly is used to distribute the ionized working gas to the air inlet. The pipeline assembly is connected and arranged at the air outlet, and the output end of the pipeline assembly is connected and arranged with the air inlet assembly. The boiler system described in the present invention, by providing a heat source supply device having a plasma generating assembly and an air inlet assembly and a pipeline assembly, helps to eliminate the emission of pollutants during the boiler heating process, and improves the thermal efficiency of the boiler and the steam production efficiency. In addition, by providing the pipeline assembly, it helps to achieve the recycling of the working gas and improve the utilization efficiency of waste heat.

The application relates to the technical field of automobile lamps, and provides a vehicle lamp outer lens, a vehicle lamp and a preparation method suitable for the vehicle lamp outer lens, which comprises the following steps: S1, printing a required black pattern on a film structure through an oil printing technology; S2, placing the film structure after the oil printing into a pressing mold to press the film structure into a required outer lens shape; S3, placing the film structure after the pressing into an injection molding mold, controlling the injection molding mold to be closed and injecting a base material to form a base layer on the film structure; S4, taking the product out of the injection molding mold and placing the product into an annealing device to perform annealing treatment; and S5, taking the product out of the annealing device after the annealing of the product is completed. Compared with the prior art, the application solves the problems of additional hardening coating and poor impact resistance of pure PMMA material, and has the advantages of low cost and high light transmittance.

The invention discloses a tool and method for controlling the depth of a contaminated layer on the surface of titanium alloy, and the tool comprises a box body which is provided with an opening in the top and is used for accommodating a titanium alloy part to be treated; the top cover assembly is connected with the opening of the box body, the top cover assembly comprises a ceramic matrix composite one-way cover and a one-way exhaust valve, a plurality of vent holes are formed in the ceramic matrix composite one-way cover, and the one-way exhaust valve is installed at the vent holes; the sealing piece is arranged at the joint of the box body and the sealing cover assembly, and the sealing piece is an annular aerogel gasket; the internal bearing mechanism comprises a plurality of internal bearing assemblies, and the plurality of internal bearing assemblies are arranged in the box body; and the pre-vacuumizing valve is arranged on the box body. According to the method, the depth of the surface pollution layer of the titanium alloy subjected to heat treatment can be stably controlled within 0.05 mm and is obviously superior to the upper limit of 0.08 mm required by the existing industrial standard.

The invention relates to an environment-friendly aluminum alloy cleaning agent, which comprises the following components in percentage by weight: 3.0 to 8.0 percent of biodegradable chelating agent, 8 to 16 percent of carbonate or bicarbonate, 2 to 6 percent of organic acid salt, 0.1 to 3.0 percent of anionic surfactant and the balance of water, the pH value of the cleaning agent is 7.5 to 9.5. The invention further claims to protect an aluminum alloy cleaning method using the environment-friendly aluminum alloy cleaning agent. The aluminum alloy cleaning method comprises the following steps: heating the cleaning agent; immersing the aluminum alloy product into the cleaning agent; keeping contact; and washing with clear water and drying. The aluminum alloy cleaning waste liquid treatment method comprises the steps that waste liquid is collected; adding an acidic regulator to regulate the pH value to 6.0-7.0; adding a flocculating agent and stirring; standing and precipitating; and separating supernate and sediment. The formula is flexible, and the waste liquid can be discharged after reaching the standard after being simply treated; and the device is particularly suitable for industrial application and small-batch cleaning operation of an aluminum alloy profile extrusion production line. The cleaning agent is high in cleaning efficiency, free of corrosion to aluminum alloy base materials and excellent in environmental protection performance.

The invention discloses a liquid nitrogen power self-circulation power generation system, and belongs to the technical field of power generation equipment, the liquid nitrogen power self-circulation power generation system comprises a vaporizer, a gas storage tank, a nitrogen power engine, a compressor and a generator, the input end of the vaporizer is used for receiving liquid nitrogen, the output end of the vaporizer is connected with the input end of the gas storage tank, and the output end of the gas storage tank is connected with the gas inlet end of the nitrogen power engine; the exhaust end of the nitrogen power engine is connected with the suction end of the compressor, the exhaust end of the compressor is connected with the other input end of the gas storage tank, and the mechanical energy output end of the nitrogen power engine is connected with the generator and used for driving the generator to generate electricity. In the whole power generation process, only nitrogen recycling is involved, and pollutant emission caused by combustion is completely eliminated; high-pressure potential energy generated in the liquid nitrogen vaporization process is used for directly pushing the piston to move, and efficient energy conversion is achieved. Nitrogen exhausted by the nitrogen power engine is recycled through the compressor, pressurized to rated pressure and fed back to the nitrogen power engine for use, and a self-circulation system is formed.

The invention provides a starch saccharification system, comprising a pulp mixing tank, a three-stage heat exchanger, a two-stage steam jet heater, a laminar hydrolysis tank, a saccharification tank, an evaporation concentration unit and a control unit; the discharge port of the pulp mixing tank is connected to a first cold fluid feed port, the first hot fluid discharge port is connected to a first steam jet heater, the discharge port of the first steam jet heater is connected to a second hot fluid feed port, the second cold fluid discharge port is connected to a laminar hydrolysis tank, the discharge port of the laminar hydrolysis tank is connected to a third hot fluid feed port, and the third cold fluid discharge port is connected to the first feed port of the saccharification tank; the first discharge port of the saccharification tank is connected to the second cold fluid feed port, and the second hot fluid discharge port is connected to the first hot fluid feed port; the first cold fluid discharge port is connected to the third cold fluid feed port, and the third hot fluid discharge port is connected to the feed port of the evaporation concentration unit; the second discharge port of the saccharification tank is connected to the second steam jet heater, and the discharge port of the second steam jet heater is connected to the evaporation concentration unit.

This invention discloses a UV-curable solvent-free hot-press adhesive and its preparation method, belonging to the field of polymer materials. The UV-curable solvent-free hot-press adhesive contains 9 components by weight, including 5-10 parts of liquid polybutadiene and 10-20 parts of polyurethane acrylate oligomer. In the preparation process, some raw materials are first mixed, ester-soluble TPU is added for dissolution, a photoinitiator is added in the dark, and end-capping isocyanate is added after cooling. The application requires three steps: coating, UV curing (wavelength 365-405nm, light intensity 150mJ / cm²), and hot-pressing (120-140℃). Compared with traditional hot-press adhesives, it has no VOC emissions, high production efficiency, low energy consumption, and excellent adhesion performance (peel force 17.3-33.5N / 25mm).

The application relates to the technical field of agricultural machinery, and discloses a pure-electric double-spiral fertilizing, furrowing and soil covering integrated machine, which comprises a rack provided with an electrically-driven walking track at the bottom; a power battery pack for providing pure electric power for the walking and operation of the whole machine; a middle low-position feeding system comprising a fertilizer box installed at the middle part of the rack, a material collecting groove arranged below the fertilizer box and a bucket elevator; a position adjusting module comprising a lifting module and a horizontal moving module; and a front furrowing and fertilizing operation head comprising two hollow spiral furrowing devices which are symmetrically arranged left and right; and each spiral furrowing device is provided with a fertilizer discharging auger in a concentric mode. The application has a higher anti-tilting capacity than a conventional front high-position fertilizer box fertilizing machine, and eliminates the safety hidden danger of easy tilting; the spiral furrowing, spiral fertilizer discharging and soil covering actions are realized on a walking track; and the walking and operation of the whole machine completely rely on the pure electric power provided by the power battery pack.

The invention relates to a recovery method of hexazinone production wastewater, and belongs to the technical field of waste liquid recovery. According to the recovery method, high-efficiency separation of methanol and high-boiling-point impurities is realized through pressurized rectification and precise temperature control of tower top and tower kettle temperatures in cooperation with high-efficiency stainless steel wire mesh filler; by constructing a ferric oxide-activated carbon catalyst, sodium sulfite and circulating amine salt solution ternary synergistic toxicity breaking system, the efficiency bottleneck of a traditional single reducing agent is broken through, and synergistic interaction is achieved; efficient capture and high-value conversion of ammonia nitrogen are realized through precise stoichiometric control and an electrochemical innovation scheme; and a carbon dioxide saturated aqueous solution with the pH value of 5.3-5.7 is innovatively adopted to replace an organic solvent for adsorption column desorption, so that the desorption efficiency is greatly improved, and the VOCs emission and hazardous waste disposal risks caused by the use of methanol are effectively eliminated. According to the recycling method, the recycling rate and the purity are guaranteed, and meanwhile the recycling rate of substances such as organic amines is increased.

This invention belongs to the field of chemical synthesis technology, specifically relating to a method for preparing 2-methyl-1H-phenylenehydride. The method includes the following steps: using acetic acid and 1,8-diaminonaphthalene in a molar ratio of 2.5~5.5:1 as reactants, and water as the reaction medium, at 100℃~185℃, one amino group of 1,8-diaminonaphthalene undergoes a condensation reaction with the carboxyl group of acetic acid, removing one water molecule to obtain a product intermediate containing an amide bond. The other amino group on the intermediate undergoes an intramolecular cyclization reaction with the carbonyl group in the amide bond, removing one water molecule to obtain a crude product. The crude product is then purified to obtain the 2-methyl-1H-phenylenehydride. The 2-methyl-1H-phenylenehydride prepared using the method of this invention can achieve a purity of up to 98%.

The present invention discloses a full-process induction heat treatment device and method for a steel pipe mandrel, the method comprising: transferring a mandrel (1) at room temperature from one end of a horizontal conveyor roller to the other end, heating the mandrel to a first quenching temperature through an induction heating furnace (2), and cooling through a cooler (4); transferring the mandrel in the reverse direction, heating the mandrel to a first tempering temperature through an induction heating furnace, cooling after heating; transferring the mandrel in the reverse direction again, heating the mandrel to a second quenching temperature through an induction heating furnace, cooling after heating; performing several consecutive tempering processes, heating the mandrel to a second tempering temperature through an induction heating furnace, cooling after heating. The present invention uses a conveyor roller to reciprocately transfer the mandrel, and uses induction heating to complete preliminary quenching, quenching and tempering, formal quenching and multiple tempering processes, thereby improving the heat treatment quality of the mandrel, and improving the heat treatment efficiency and the performance of the mandrel.