11results about How to "Reduce carbon content" patented technology

The invention relates to a method for preparing a lithium iron phosphate / carbon composite material of a lithium ion battery, which belongs to the technical field of lithium ion batteries. The method for preparing the lithium iron phosphate / carbon composite material of the lithium ion battery comprises the following steps of: 1) preparing a suspending graphene-dispersed aqueous solution system, namely, crushing graphite to 1 to 5 microns, adding the crushed graphite into distilled water or purified water, adding 0.1 to 5 percent of surfactant, heating with stirring the mixed solution to 180 to 250 DEG C in a sealing way, performing stirring for 2 to 6 hours and reducing the temperature; 2) crushing lithium iron phosphate to the particle size of 1 to 5 microns, adding the crushed lithium iron phosphate into the distilled water or the purified water, adding with stirring 0.01 to 1 percent of coupling agent, performing uniform stirring, adding the graphene-dispersed aqueous solution, and performing stirring and filtration; and 3) vacuum-drying solid powder obtained by the filtration, and calcinating the dried solid powder for 2 to 12 hours to obtain the graphene-coated lithium iron phosphate cathode material. The method has the advantages of simple process, high material performance, high conductivity, high bulk density, high compacted density and the like.

This invention discloses a method for preparing rare earth metals by electrolytic oxides using a fluoride system, belonging to the field of rare earth metal preparation technology. This invention modifies graphite anodes used in rare earth molten salt electrolysis. It improves oxidation and corrosion resistance, reduces anode wear, lowers replacement frequency, and increases production efficiency, yielding high-purity, low-carbon rare earth metal lanthanum. A three-dimensional network framework material is constructed using Prussian blue self-assembly and SiC is deposited to obtain a composite framework material. During pre-calcination with graphite and other materials, the derivatives optimize the crystal structure and interfacial bonding, enhancing the strength of the pre-shaped anode material and ensuring the integrity and performance stability of the electrode structure. Thirdly, the pre-shaped anode material is impregnated with a specific impregnation solution, altering the gas diffusion path and resistance, inhibiting oxidation reactions, and high-temperature sintering generates substances that fill the pores, forming a dense microstructure. Simultaneously, the compounds formed by phosphoric acid enhance cohesion and adhesion, improving oxidation and molten salt corrosion resistance, and extending the service life of the graphite anode.

The utility model discloses a kind of power station boiler dry slag machine furnace bottom air leakage management devices, specifically related to the field of energy saving and emission reduction of power station boiler, including dry slag machine body, its furnace bottom air leakage is led out through cooling air exhaust interface, furnace bottom air leakage exhaust interface, tail air leakage exhaust interface;Connection pipe;Air blower one, air blower two;Booster fan;Secondary air box outlet;Slag bin, slag discharge room;Transition slag hopper.The power station boiler dry slag machine furnace bottom air leakage management device described in the utility model, by the redesign of the way that traditional dry slag machine cooling air enters hearth, solve the dry slag machine cooling air that is completed heat exchange with furnace bottom slag, as furnace bottom air leakage directly enter hearth to the disturbance of combustion, change dry slag machine cooling air from disordered furnace bottom air leakage to orderly air by secondary air, can effectively improve the stability of hearth combustion, reduce flue gas temperature, reduce fly ash combustible carbon content, thereby improve boiler efficiency, reduce coal consumption.

This invention relates to the field of ship dredging equipment technology and discloses a welding process for steel pile marking lines, comprising: S1: machining grooves on a plate; S2: welding an isolation layer weld on the bottom and sides of the groove; S3: welding a cover layer weld on the isolation layer weld; S4: grinding the weld to form a marking line; S5: rolling, assembling, and welding the plate with the marking line facing outwards to form a steel pile, wherein the marking line is ring-shaped and encircles the outer perimeter of the steel pile. This invention, by machining grooves and welding marking lines before rolling and welding the plate to form the steel pile, reduces the labor intensity of the marking line welding operation, increases welding efficiency, reduces the number of weld joints, and ensures stable and reliable welding quality. Furthermore, the isolation layer weld reduces the migration of carbon elements from the steel pile plate to the cover layer weld of the steel pile marking line, lowers the carbon content of the cover layer weld, and improves the corrosion resistance of the cover layer weld.

The present application relates to a kind of printing and dyeing sludge biological treatment photovoltaic cell drive near-infrared targeted drying method and device, the present application is directed to the characteristics of active organic matter, inert organic matter, heavy metal etc. in sludge, the light initiator with strong near-infrared light absorption capacity, stable chemical properties, low price is introduced into the printing and dyeing sludge after biological pretreatment, the organic matter often on the surface of nano particle and macromolecular solid organic matter in sludge can be closely combined, when these nano particles are irradiated by near-infrared light, its surface will occur plasmonic resonance phenomenon, leading to strong electric field and heat generation, so that near-infrared energy is efficiently focused around target material, near-infrared targeted heating drying is realized, and sludge treatment rate is significantly improved. Metal nanoparticles interact with bacterial cells by charge, destroy their membranes and walls, destroy charge exchange, interfere with ribosome assembly and enzyme activity, achieve the effect of sterilization and disinfection.

The invention aims to provide a W-shaped boiler burner based on pulverized coal particle size separation, belongs to the technical field of pulverized coal combustion, and can solve the problems that coarse pulverized coal particles are located on the periphery of the burner and fine pulverized coal particles are located in the center due to airflow rotation inertia of the W-shaped boiler burner; and the problems of delayed pulverized coal ignition, low combustion efficiency, high NOx emission and the like are solved. A vertical downward injection type structure is adopted, and a cross deflection flow guide structure is arranged in the combustor, so that pulverized coal is finally distributed at a contraction nozzle of the combustor in the mode of'centralized injection of center coarse powder and coating of outer layer fine powder '. By means of the structure, fine pulverized coal can be preferentially ignited in a hearth with the low temperature to establish a stable high-temperature field, central coarse-particle pulverized coal is promoted to be completely burnt out, the burning stability of inferior coal and wide-particle-size pulverized coal is remarkably improved, and the loss of unburnt carbon and the generation amount of NOx are effectively reduced.

This invention discloses a combustion system and method for the separate grinding and co-firing of low-volatile and high-volatile coals, relating to the field of coal-fired power generation. The system includes a main air box, a burnout air box, secondary air nozzles, high-volatile coal pulverized coal burners, low-volatile coal pulverized coal burners, and burnout air nozzles. The main air box is divided into a high-volatile coal combustion zone and a low-volatile coal combustion zone, with the low-volatile coal combustion zone located in the lower part of the burner. The burnout air box is located in the furnace height direction away from the main air box, forming a nitrogen reduction and deswirl zone. This invention employs separate grinding and pulverization, and zoned burner arrangement to match the different combustion characteristics and pulverization requirements of low-volatile and high-volatile coals. This achieves a high proportion of low-volatile coal co-firing, effectively improving the stability of the boiler combustion system, increasing the pulverized coal burnout rate, reducing NOx emissions, suppressing the rotation intensity of flue gas at the furnace outlet, and reducing flue gas temperature and steam temperature deviations.

The application discloses a kind of gas magnetization energy-saving devices, it is related to magnetization energy-saving device technical field, the gas magnetization energy-saving device, including magnetization equipment body, magnetization equipment body includes front shell, rear shell and gas flow pipe, front shell and rear shell are set in front and back two sides of gas flow pipe, the outer surface of front shell and rear shell is fixedly connected with mounting block, the outer surface of gas flow pipe is fixedly connected with two symmetrical first fixed blocks, the top of gas flow pipe is provided with gas pipe, the gas magnetization energy-saving device, by making gear drive fixed rod slide out the inside of fixed groove, so that the fixation of gas flow pipe and gas pipe is removed, so that the connection of gas flow pipe and gas pipe is more convenient, and staff can more smoothly install and disassemble magnetization equipment body, so that staff can conveniently carry out post-maintenance to magnetization equipment body, simultaneously, staff can more conveniently use device.

The application relates to the field of powder metallurgy and new material technology, in particular to an injection-molded maraging steel and a preparation method and application thereof, and the preparation method comprises the following steps: preparing metal powder raw materials through feeding, injection molding, degreasing, sintering, solid solution treatment and aging treatment to obtain the maraging steel, wherein the solid solution treatment adopts secondary solid solution treatment, the first solid solution treatment adopts 1000-1100 DEG C heat preservation for 1-3 hours, and the second solid solution treatment adopts 800-900 DEG C heat preservation for 1-3 hours. The preparation method provided by the application can simultaneously meet the high-strength high-plasticity standard of not less than 2100 MPa of yield strength and not less than 5% of elongation after fracture by first carrying out the first solid solution treatment at high temperature and then carrying out the second solid solution treatment at low temperature.

This invention discloses a low-carbon magnesia-carbon brick and its preparation method. The low-carbon magnesia-carbon brick is composed of the following components in parts by weight: 40-50 parts by weight of resin-impregnated magnesia aggregate, 45-55 parts by weight of unimpregnated magnesia, 2-4 parts by weight of graphite, 0.5-2.0 parts by weight of nano-carbon black, 1-3 parts by weight of composite antioxidant, and 2.5-4.0 parts by weight of phenolic resin. The preparation method is as follows: unimpregnated magnesia fine powder, nano-carbon black, and composite antioxidant are mixed to obtain mixed raw material A. The resin-impregnated magnesia aggregate, unimpregnated magnesia aggregate, phenolic resin, graphite, and mixed raw material A are added to a mixer in sequence, mixed, pressed into shape, and finally heat-treated. The low-carbon magnesia-carbon brick of this invention significantly improves the thermal shock stability and slag erosion resistance of the material while effectively reducing the carbon content.

The utility model discloses a novel hearth structure of a circulating fluidized bed boiler. The novel hearth structure comprises a hearth body, the lower portion of the hearth body is in a funnel shape, the upper portion of the funnel-shaped portion of the hearth body is a dense-phase area, the lower portion of the funnel-shaped portion of the hearth body is an air chamber, the side wall of the upper portion of the dense-phase area of the hearth body is an efficient heat transfer area, and the side wall of the lower portion of the dense-phase area is a low-efficiency heat transfer area. The dense-phase area of the hearth is divided into two heat transfer areas, namely the high-efficiency heat transfer area at the upper part and the low-efficiency heat transfer area at the lower part, so that the lower part of the dense-phase area is poor in heat transfer property, small in heat loss, high in heat efficiency and stable in combustion, and when the boiler runs at a low load, compared with a conventional boiler hearth structure, the low-heat-value fuel can be combusted, and the bed temperature is high; the bottom slag is low in carbon content and high in combustion efficiency, the desulfurization effect of limestone in the furnace is good, the dosage is small, NOX is originally generated, meanwhile, the temperature of a hearth outlet is increased, the denitration efficiency of SNCR is improved, and the risk that an air pre-heater is blocked by ammonium bisulfate is reduced.