12results about How to "Eliminate emissions" patented technology

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 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 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 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.

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%.