81 results about "Partial oxygen" patented technology

The invention discloses a catalyst for low-temperature flue gas denitration, and a preparation method thereof. The method adopts a selective catalytic reduction (SCR) technique, takes vanadium oxide as an active component and titanium oxide as a carrier, and substitutes fluorine for partial oxygen in an oxide catalyst, so as to prepare the catalyst, wherein the vanadium oxide as the active component is loaded on the carrier by an impregnation method; the titanium oxide as the carrier is prepared by a sol-gel method; and the substitution of fluorine for oxygen can be carried out when the titanium oxide as the carrier is prepared, or when the vanadium oxide as the active component is loaded, or when the titanium oxide as the carrier is prepared and the vanadium oxide as the active component is loaded. The catalyst remarkably improves low-temperature denitration activity and catalytic capability, can reach the NO removal rate of over 90 percent at a temperature over 200 DEG C, has strong industrial application value, and can be widely applied to the NH3 selective catalytic reduction of nitrogen oxides in flue gas.

A recirculating hydrogen-oxygen alkaline fuel-cell (AFC) includes an alkaline matrix electrolyte interposed between a porous anode and porous cathode, and an oxygen flow network in fluid connection with the porous cathode. The oxygen flow network has an input portion for supplying oxygen and an output portion for removing oxygen and reaction products after electrochemical reaction. A hydrogen flow network is in fluid connection with the porous anode. The hydrogen network has an input portion for supplying hydrogen and an output portion for removing hydrogen and reaction products after electrochemical reaction. At least one of the oxygen flow network and the hydrogen flow network includes a feedback conduit to form a recirculation loop. The recirculation loop feeds back a portion of the hydrogen or oxygen flow after electrochemical reaction to the input portion.

The invention relates to a municipal life wastewater treatment system with high efficiency and low energy consumption. The system comprises a reinforcement pretreatment part, a jet-type aeration biological filter part and a composite-type biological contact oxidation pond part. Multistage oxygen deficiency treatment, anaerobic treatment, aerobic treatment, sedimentation and filtration are adopted, reinforcement pretreatment and partial oxygen deficiency-anaerobic treatment are carried out on the wastewater, most organic pollutant can be removed and degraded, and the biodegradability of the wastewater is improved, partial aerobic treatment, oxygen deficiency treatment, anaerobic treatment, sedimentation and filtration treatment are carried out on the jet-type aeration biological filter pond, a great amount of organic pollutant, ammonia nitrogen and phosphate is removed, partial aerobic treatment, oxygen deficiency treatment, anaerobic treatment, sedimentation and filtration treatment are carried out on the composite-type biological contact oxidation pond, partial organic pollutant remained in the wastewater is removed and degraded, so that the pollutant removing rate of the domestic wastewater is improved. The system is small in occupied area, low in investment, low in operation cost and convenient in maintenance and management, and reaches the standard A of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB18918-2002).

The invention discloses a method for improving the heat efficiency of a combustion furnace by oxygen-rich partial oxygen-enriched jet flow combustion supporting, which comprises the following steps of: introducing a fuel and an oxygen-rich gas into the combustion furnace respectively; and gathering the fuel and the oxygen-rich gas together for combustion, wherein the oxygen-rich gas is pressurized first, then is jetted into a fuel flow area at a linear velocity which is 1.2 to 4.0 times the flow velocity of the fuel by forming an angle of 10 to 45 degrees with the jetted fuel, and is mixed with the fuel for combustion, and the entering position of the oxygen-rich gas is an area which is between the top end of a combustion flame and a jet tip and is 1/4 to 4/2 away from the jet tip of a fuel nozzle. The invention also provides a device for improving the heat efficiency of the combustion furnace by the oxygen-rich partial oxygen-enriched jet flow combustion supporting. The method and the device has the following advantages that: by using a special oxygen-rich jet flow nozzle and a heat radiation principle, not only the duel energy-saving efficiencies of reducing the combustion-supporting air volume and completely combusting the fuel are kept, but also the temperature of a combustion flame area can be raised to the utmost extent, so the flue gas heat radiation is improved to the utmost extent.

The invention discloses a brown coal low temperature carbonization method. The method comprises the following steps of: by a gas heat carrier, firstly, heating the coal under the condition of isolating air, removing more than 90% of total moisture, crystal water and partial oxygen-containing functional groups which have influence on the coal heat value, and enriching the coal heating constituents; and further heating the coal to form solid semicoke, purifying the separated volatile constituent substance to recycle coal tar and coal gas products, recycling the afterheat of the high temperature semicoke and cooling the semicoke to collect the semicoke. The obtained semicoke has the advantages of high heat value, excellent stability and non-reabsorption and the like. The method is simple in technology, low in energy consumption, pollution-free and high in product quality, capable of realizing industrial large-scale production, and easy to generalize widely.

The invention discloses a brown coal modification and upgrading method. The method comprises the following steps of: by a gas heat carrier, firstly, heating the coal to 180-300 DEG C under the condition of isolating air; and removing more than 90% of total moisture, crystal water and partial oxygen-containing functional groups which have influence on the coal heat value, and enriching the coal heating constituents, wherein the heat value is improved to be more than 500kcal/kg, the moisture content is less than 8%, and the medium-high heat value power coal index is satisfied. The modified coal has the characteristics of high heat value, excellent stability, poor water absorption property and the like; and meanwhile, in the technology, industrial water is not needed, and generation of waste water and emission of harmful gas are avoided, so that the technology is simple, economic and convenient, and is easy to generalize widely.

The invention discloses a sintering method of a high-magnetic-permeability MnZn ferrite material, which comprises the following four stages: a. first temperature rise stage; b. second temperature rise stage; c. holding stage; and d. cooling stage. Since the temperature and partial oxygen pressure are controlled in the whole sintering process of temperature rise, holding and cooling, the high-magnetic-permeability MnZn ferrite can be obtained at lower sintering temperature. The sintering method of the high-magnetic-permeability MnZn ferrite has the advantages of low sintering temperature and short sintering period, and greatly lowers the sintering cost of the MnZn ferrite.

The invention discloses an oxygen generating device special for an ozone device, which sequentially comprises a filtering silencer, a gas blower, a cooler, an adsorption tower group, an oxygen buffering tank, an oxygen compressor, a drying tower group, a water cooler and a gas-water separator from upper position to lower position. The gas is filtered and then blown into the cooler by the gas blower, and enters the adsorption tower with moisture, nitrogen, carbon dioxide and other impurities in the gas adsorbed. The oxygen flows out from the adsorption tower, enters the oxygen buffering tank and is sent into the drying towers after being pressurized by the oxygen compressor, and the oxygen special for the ozone device is obtained after drying. One drying tower in the drying tower group is used for drying the oxygen, simultaneously the other drying tower can be purged for regenerating by partial oxygen special for the ozone device, the regenerated gas can enter the oxygen compressor after being performed with water cooling and gas-water separation and then reenters the drying towers for drying after being pressurized by the compressor, so that oxygen special for the ozone device can be obtained, and no oxygen discharging waste can be achieved.

A chlorine peeling method in zinc dross. The steps comprises adding zinc dross, which contains more than 1.8% chlorine and 20-30% water, into rotary kiln; blowing air and fuel of coal gas that contains 3-10% steam, in which inward flux of coal gas accords to coal content (Nm3) : zinc dross (dry weight, t) =(400-500):1, discharge pressure of coal gas is 30-40mmH2O and blast pressure is 30-120mmH2O; using steam in coal gas and partial oxygen to achieve to antichloration and zinc dross staying in rotary kiln for 3h from head to tail, in which when rotary kiln heating-up to 1000-1200 Deg. C, staying in hot zone for 30-90 minutes. The method effectively expels chlorine in zinc dross and achieves comprehensive utilization of zinc dross. The content of chlorine in zinc oxide after antichloration drops to less than 0.05%, ratio of antichloration is more than 98% and content of calcine zine exceeds 77.0% (ZnO>95.0%).

The invention discloses a making method of near infrared high-transmissivity polycrystalline transparent conductive oxide film, which is characterized by the following: adopting conductive oxide film as doped indium oxide and M (M is W and Mo); using common glass as base; reacting indium metal to dop W or Mo insert target under 300-500 deg.c through DC magnetic sputtering technique; obtaining the In2O3:M film with polycrystalline structure under fitful sputtering pressure, partial oxygen pressure, sputtering current and sputtering voltage; fitting for applying in the solar energy battery domain.

The invention relates to a process burner of a water-coal slurry gasification furnace. The process burner comprises an outer spray head and a middle spray head, wherein the outer spray head is used for oxygen circulation; the middle spray head is located inside the outer spray head and used for water-coal slurry circulation; an oxygen introduction part communicated with a chamber of the outer spray head is arranged on the middle spray head and is used for introducing oxygen in the chamber of the outer spray head into a chamber of the middle spray head; the oxygen introduction part is composed of an introduction hole and a buffering ring; the introduction hole is communicated with the chamber of the outer spray head and the buffering ring; and the buffering ring is communicated with the chamber of the middle spray head. Through the structure design, partial oxygen in the outer spray head is introduced into the chamber of an inner spray head, so that an oxygen layer is formed close to the inner wall of the inner spray head, and the oxygen layer can prevent direct contact between the water-coal slurry flowing through the middle spray head and the inner wall of the chamber of the middle spray head, thereby reducing the wearing of the water-coal slurry to the inner wall (inner chamber) of the chamber of the middle spray head, prolonging the maintenance period caused by the inner chamber wearing of the middle spray head, lowering investment and operation cost, and especially lowering the operation cost significantly.

High-Tc superconducting ceramic oxide products and macroscopic and microscopic methods for making such high-Tc superconducting products. Completely sealed high-Tc superconducting ceramic oxide provides are made by a macroscopic process including the steps of pressing a superconducting ceramic oxide powder into a hollow body of a material inert to oxygen; heat treating the superconducting ceramic oxide powder packed body under conditions sufficient to sinter the ceramic oxide powder; and then sealing any openings of the body. Optionally, a waveform or multiple pulses of alternate magnetic filed can be applied during the heat treatment. The microscopic method of producing a high-Tc superconducting ceramic oxide product includes the steps of making a high-Tc superconducting ceramic oxide thin film; optionally sintering the deposited thin film in a magnetic filed; and removing partial oxygen content of the thin film by a scanning tunneling electron treatment machine to form a microscopic insulation layer between two high-Tc superconducting domains of the thin film.

The invention discloses a cerium-iron-zirconium based composite oxygen carrier material with Al2O3, MgO and SiO2 as carriers, which is used for transmission of partial oxygen in a partial oxidation process. In the invention, three common cheap oxides are used as carriers, cerium-iron-zirconium of certain proportion and the carriers are mixed with a coprecipitation method or a sol-gel method so as to prepare the cerium-iron-zirconium based composite metallic oxide carrier with different carriers. The carrier is beneficial to improvement of oxygen storage capacity and cycle performance of the oxygen carrier, can improve the combustion efficiency of fuels at the same time of obviously reducing the cost, achieves the purpose of modification, and is easy to use in amplified production, wherein MgO is an alkaline oxide, Al2O3 is a neutral oxide and SiO2 is an acidic oxide.

The inventive method of manufacturing an oxide superconducting wire comprises a step (S1, S2) of preparing a wire formed by covering raw material powder of an oxide superconductor with a metal and a step (S4, S6) of heat-treating the wire in a pressurized atmosphere, and the total pressure of the pressurized atmosphere is at least 1 MPa and less than 50 MPa. Thus, formation of voids between oxide superconducting crystals and blisters of the oxide superconducting wire is suppressed while the partial oxygen pressure can be readily controlled in the heat treatment, whereby the critical current density can be improved.

The invention discloses a power generation system with partial oxygen-enriched combustion combined with a calcium-based chain and a CO2 capturing method. Through a partial oxygen-enriched method in which a mixture of air, oxygen and recycled flue gas serves as a combustion improver, the CO2 gas concentration of flue gas of a boiler outlet is increased to 30%-60%, the flue gas enters a chemical chain combustion post-capturing device based on a calcium base, the calcium-based reactivity is greatly improved, the CO2 capturing efficiency reaches 95% or above, and the gross generation is increased.According to the power generation system, the oxygen generation cost, the carbon carrier cost, energy consumption and the CO2 capturing efficiency are all balanced, so that the comprehensive efficiency is the optimized, two advanced carbon capturing techniques of partial oxygen-enriched combustion and the calcium-based chemical chain are combined, and the power generation system and the CO2 capturing method have the advantages of good economical efficiency, simple process, low energy consumption, high carbon capturing efficiency and the like.

The invention provides an integrated power semiconductor device and a manufacturing method thereof. The semiconductor device comprises a longitudinal high-voltage device, a first high-voltage pLDMOS device, a high-voltage nLDMOS device, a second high-voltage pLDMOS device, a low-voltage NMOS device, a low-voltage PMOS device, a low-voltage NPN device and a low-voltage Diode device which are integrated on the same chip. The first high-voltage pLDMOS device, the high-voltage nLDMOS device, the second high-voltage pLDMOS device, the low-voltage NMOS device, the low-voltage PMOS device, the low-voltage NPN device and the low-voltage Diode device are all isolated through media. The first high-voltage pLDMOS device and the high-voltage nLDMOS device adopt a multi-channel design, and the second high-voltage pLDMOS device adopts a single-channel design. The invention provides a partial oxygen burying integration technology, an oxygen burying layer is formed by adopting ion implantation and other modes, the technology can integrate a transverse high-voltage device, the longitudinal high-voltage device and a low-voltage device, and problems of current leakage and crosstalk are avoided. Compared with the transverse high-voltage device, by using the semiconductor device of the invention, an on-resistance is low and an occupied chip area is small.

An energy-saving emission-reducing partial oxygen-increasing combustion-supporting device used for a cement kiln is placed beside the cement kiln. A VPSA oxygen enrichment generation device of the energy-saving emission-reducing partial oxygen-increasing combustion-supporting device is connected with an oxygen enrichment control device. The oxygen enrichment control device is connected with an air blower and connected with an oxygen enrichment preheater through an oxygen conveying pipeline. An oxygen enrichment pressure transmitter, an oxygen enrichment concentration transmitter, an oxygen enrichment flow rate transmitter and a control valve are respectively arranged on the oxygen conveying pipeline. A smoke inlet of the oxygen enrichment preheater is connected with high-temperature waste gas of the cement kiln, and an oxygen enrichment gas outlet is connected with an oxygen enrichment jet nozzle. The oxygen enrichment jet nozzle is arranged on the lower half portion of a rotary kiln combustion device. According to the energy-saving emission-reducing partial oxygen-increasing combustion-supporting device used for the cement kiln, not only can materials absorb more effective heat energy as much as possible, but also the temperature in the upper portion of the cement kiln can be reduced effectively and fuel can be burnt fully, timely and completely with less combustion air. Moreover, performance of high-quality fuel can be fully developed so that usage of poor-quality fuel becomes possible. Smoke dust, dust, CO, CO2, NOX and the like are reduced. The energy-saving emission-reducing partial oxygen-increasing combustion-supporting device used for the cement kiln has remarkable comprehensive energy-saving emission-reducing benefit.

The invention belongs to the technical field of coal chemical processing and discloses a lignite solubilizing and catalytic liquefaction method in non-hydrogen atmosphere. The method comprises the following steps: preparing coal powder, preparing coal slurry, performing thermal dissolution and catalysis, and separating the thermal dissolution liquefied product, wherein in the coal powder preparation step, the water content of coal powder is no less than 8w%; and in the thermal dissolution and catalysis step, CO gas is introduced. In the method, CO is used as medium, thus the solvent can be optimized and the quality of liquefaction oil can be increased; H2O required by the reaction comes from the lignite with rich water, thus the limit on the water of lignite can be lowered, the heating drying of lignite can be eliminated and the energy consumption can be reduced; the water production rate in the liquefaction of lignite can be reduced, thus water pollutions can be reduced; the chemical reaction is utilized to generate active hydrogen which is easy to react with coal, thus the yield of liquefaction oil can be increased and coal is easy to dissolve; and CO is used to remove partial oxygen and sulfur in the coal structure and the consumption of hydrogen can be reduced. The operational process is simple, safe and stable, the localization degree of equipment is high, the investment is low and the cost is low.

The present invention provides a production method of copper-carbon nanofibers, which can realize oxidation-resistant characteristics and process simplification, the production method comprising the steps of: forming a metal precursor-organic nanofiber comprising a metal precursor and an organic substance; and forming a metal-carbon nanofiber by performing a selective oxidation heat treatment to the metal precursor-organic nanofiber so as to simultaneously oxidize carbon of the organic substance and reduce the metal precursor to a metal, wherein the metal has a lower oxidation resistance than the carbon; the selective oxidation heat treatment is performed through a singly heat treatment step, not a plurality of heat treatment steps; and metal-carbon nanofibers with different structures may be formed according to the amount of partial oxygen pressure under which the selective oxidation heat treatment is performed.