33results about How to "Hypoxic" patented technology

The invention provides an electrode for electrolysis, a preparation method of the electrode and an electrolytic bath. The electrode for electrolysis comprises a conductive base material and an active coating, wherein the conductive base material is a base material containing titanium or titanium alloy; the active coating at least comprises a bottom coating layer and a surface coating layer; the bottom coating layer is prepared from titanic oxide, iridium oxide and ruthenium oxide; the surface coating layer is prepared from iridium oxide, ruthenium oxide, titanium oxide and a metal or an oxide of one of two of palladium and platinum. According to the electrode for electrolysis disclosed by the invention, the double coating layers are adopted; compared with the single coating layer only containing ruthenium, iridium and titanium, the electrode is better in activity, the chlorine evolution potential of the electrode is low, the oxygen evolution potential is high, the service life of the electrode is longer, and the electrolysis stability is better.

The invention relates to the technical field of comprehensive utilization of biomass oil and animal and vegetable oil, in particular to a method for preparing hydrocarbon fuel oil by mixing the biomass oil and the animal and vegetable oil. Simple process flow is adopted in the method; and a mixture of the biomass oil and the animal and vegetable oil is converted into the hydrocarbon fuel oil withthe properties and the components (taking fractions such as gasoline, diesel oil, kerosene and the like as the main components) similar to those of petroleum at a certain temperature by adopting a small amount of water as a medium and adopting transition metals, a molecular sieve and the like as catalysts. Different kinds of biomass oil and animal and vegetable oil are mixed according to different proportions, so that the alkane content can be obviously increased and the properties of the fuel oil can be improved. The calorific value of the obtained fuel oil is 36 to 45 MJ/kg and the oxygen content is less than 7 percent.

The invention relates to a positive pole coating for an ion membrane electrolysis bath. The positive pole coating is characterized by comprising, in weight percent, 35-45mol% of ruthenium, 5-15mol% ofiridium, 5-10mol% of platinum, 35-45mol% of titanium and smaller than 4%mol% of other additives. The additives comprise zirconium chloride or palladium chloride. The positive pole coating for the ionmembrane electrolysis bath is used for an active anode, an oxygen evolution potential is high, catalytic ability is high, conductivity is high, oxygen evolution side reaction cannot be easily generated, the coat is stable in performance, resistant to corrosion, long in service life, coating can continue to be used after recoating after an electrode is faulted, electrodes is effectively controlled, product quality is improved, and required chlorine purity is high, and oxygen content is low.

The invention discloses a chrome ore prereduction external heating type shaft furnace, which is characterized in that multilayer gas burner flame paths arranged on both sides of reduction reaction chambers with a rectangular cross section indirectly supply heat under the condition of air separation. The shaft furnace consists of a plurality of independently working reaction reduction chambers; the reduction reaction chambers and the gas burner flame paths are built by tailored high aluminium special-form refractory bricks; and the shaft furnace body is vertically arranged on a bearing girder. Dried carbon-contained chrome ore pellets are added into a bin on the top end of the shaft furnace and are discharged out of the furnace through the preheating section, the reduction section and the cooling section of the shaft furnace. The temperature of the reduction reaction is 1,300 to 1,400 DEG C; the material stays at the reduction section for 3 to 4 hours; and the comprehensive reduction degree is 60 to 70 percent. The prereduced pellet ore is used for producing high carbon ferrochrome in a closed electric furnace. The cold pellet ore which is charged into the closed electric furnace can reduce the power consumption for ferrochrome by above 25 percent, improve the yield by above 40 percent, reduce the emission by above 20 percent, and improve the chrome recovery rate by above 3 percent. The chrome ore prereduction external heating type shaft furnace can be used for continuous production, and has the advantages of circulation, high economical efficiency, environmental protection, energy conservation, emission reduction, and the like.

The invention relates to a preparation method of a high-heat-conduction aluminum nitride thick film, belongs to the technical field of surface coating preparation and application and mainly solves the technical problems that an aluminum nitride thick film can not be prepared, the deposition speed is low, commercialization is difficult to realize and the like in the prior art. According to the method, the aluminum nitride thick film is deposited through arc ion plating, the nitrogen/aluminum ratio in the film is uniform, the thickness of the prepared AlN high-heat-conduction film can be up to 3-10mu m, and a large bonding force can be generated between the film and a substrate, wherein the involved substrate material can be metal such as stainless steel, iron, copper, aluminum and the like, or can be an inorganic non-metal material such as ceramic, glass and the like, or can be a high-molecular organic polymer such as epoxy resin, polyimide and the like. The preparation method comprises the following steps: performing surface treatment on the substrate material; and by selecting pure aluminum as a cathode target material and using pure nitrogen gas as reacting gas, forming the AlN high-heat-conduction film through reaction between aluminum ions obtained by ionization and the nitrogen gas, wherein the purity of the aluminum target material is 99.99%, and the purity of the nitrogen gas is 99.999%. Thus, the method is applicable to multiple fields such as electronic measuring instruments, computer equipment, measurement and control systems, airplanes, precision weapons and the like.

The invention relates to an ion membrane electrolytic cell. The ion membrane electrolytic cell comprises a cell rack, wherein a plurality of electrolysis unit cell groups (8) are arranged on the cellrack, and the electrolysis unit cell groups (8) have the characteristics that two ends of each electrolysis unit cell group (8) are locked separately through copper row end plates; the copper row endplates are copper row end plates which are fixed on a fixing base or mobile copper row end plates which are fixed on a push rod base, different number of electrolysis unit cell groups (8) and copper row end plates for locking a plurality of electrolysis unit cell groups (8) are selected according to the capacity requirement, and the copper row end plates are connected with a power source. The ionmembrane electrolytic cell has the advantages of good running stability, free assembly and allocation according to the capacity requirement, low electric loss, high production efficiency and high productivity.

The invention relates to novel preparation technology for a mixture taking water as a grinding medium. The novel preparation technology contains working procedures such as batching, wet grinding, unloading, slurry drying and the like, wherein in the working procedure of the wet grinding, distilled water is adopted as the grinding medium, and 2 to 3 percent of antioxidant substance is added into the distilled water; in the working procedure of unloading, the mixture is unloaded from a wet grinder and passes through a 320-mesh sieve, and the wet grinder is washed for 6 times by water; and in the working procedure of slurry drying, an open type spray drying tower is adopted for drying, slurry is output to a nozzle for atomization by a pump, fog drops move from the bottom up, encounter the hot air which moves from the top down, and then are dried and a material flows out of the tower and is loaded into a material barrel after the automatic cooling. The preparation technology can effectively eliminate potential safety hazard, and save a large amount of energy sources; and the preparation technology does not need fire prevention and explosion prevention, adopts open type spray drying equipment, saves one half of equipment investment, does not need chilled water and nitrogen, and greatly reduces the cost for production operation.

The invention discloses a preparation method for tungsten copper nickel alloy powder. Atomized copper powder and crystalline tungsten powder are selected and used as raw materials; carbonyl nickel powder is added to the atomized copper powder and the crystalline tungsten powder; mixed materials are put into a steel belt reduction furnace; high-temperature diffusion treatment is carried out at shielding gas or reducible atmosphere; alloy connection of the atomized copper powder and the crystalline tungsten powder is achieved through the diffusion of the carbonyl nickel powder in the atomized copper powder and the crystalline tungsten powder; the tungsten copper nickel alloy powder is obtained through crushing and screening of a crusher after the alloy connection. According to the preparation method for the tungsten copper nickel alloy powder, the prepared tungsten copper nickel alloy powder is even in composition, high in density, good in flowing property and easy to form; the problem of liable segregation in a traditional preparation method is solved; in addition, the preparation technology is simple and easy to operate.

The invention discloses a preparation method for tungsten-copper-cobalt alloy powder. The preparation method comprises the following steps: selecting atomized copper powder and crystalline tungsten powder as raw materials; adding cobalt carbonyl powder into the atomized copper powder and the crystalline tungsten powder to obtain a mixture; putting the mixture into a steel belt reducing furnace to carry out high-temperature diffusion treatment under protective gas or a reducing atmosphere; diffusing the cobalt carbonyl powder in the atomized copper powder and the crystalline tungsten powder, thereby realizing alloy connection between the atomized copper powder and the crystalline tungsten powder; and crushing and screening the mixture by a crusher to obtain the tungsten-copper-cobalt alloy powder. The tungsten-copper-cobalt alloy powder prepared by the preparation method disclosed by the invention is uniform in component, high in compactness, excellent in flowing property and easy to form; the liable segregation problem in a conventional preparation method is solved; and the preparation method is simple and easy to operate.

The invention discloses a preparation method of tungsten-copper-tin alloy powder. The preparation method comprises the steps that atomized copper powder and crystalline tungsten powder are taken as the raw materials; tin power is added to the atomized copper powder and the crystalline tungsten powder; the mixed powder is placed in a steel band reduction furnace, and is subjected to high temperature diffusion treatment in a shielding gas or reducing gas atmosphere; and through the diffusion of the tin power in the atomized copper powder and the crystalline tungsten powder, alloy connection between the atomized copper powder and the crystalline tungsten powder is realized; and through breaking and screening of a crusher, the tungsten-copper-tin alloy powder is obtained. The tungsten-copper-tin alloy powder prepared by preparation method is uniform in component, high in density, excellent in flowing property and easy to form; the problem that the possibility of segregation in the traditional preparation method is high is solved; and the preparation method is simple in preparation technology and easy to operate.

The invention discloses a structure of a flue gas secondary re-burning tunnel kiln and a flue gas secondary re-burning method. The structure is characterized in that a first air cabinet for air inletis installed in a drying room of the tunnel kiln, the first air cabinet is connected to a first centrifugal fan, the first centrifugal fan is connected with first air ducts used for air outlet, the first air ducts are distributed on channels arranged on the two sides of a simplified house, and air outlets of the first air ducts are aligned with a brick pile in the simplified house; and a second air cabinet for air inlet is installed at the upper part of the simplified house, the second air cabinet is connected to a second centrifugal fan, the second centrifugal fan is connected with second airducts used for air outlet, and the second air ducts are arranged on the two sides in a roasting channel low-temperature section of a roasting channel. According to the flue gas secondary re-burning tunnel kiln, the waste heat of finished bricks is fully utilized, the waste heat is used for baking the flue gas coming out of the drying room, the roasting channel is injected with the dry flue gas ofhot air, so that the roasting channel is not cooled, the roasting channel is fast to roast, the finished brick is fast to produce, and the problems of high coal consumption, poor product quality, lowyield and high oxygen content are effectively prevented.

The invention relates to a novel INEOS membrane polar distance electrolytic cell. The electrolytic cell comprises an anode unit, a cathode unit and ion membranes positioned between the anode unit andthe cathode unit. The electrolytic cell is characterized in that the anode unit comprises anode unit cell bodies, and a new anode net is arranged on the left side face of each anode elastic claw, wherein each new anode net is a complete net; the cathode unit comprises cathode unit cell bodies, each cathode column is provided with a cathode elastic claw on the right, the right side face of each cathode elastic claw is provided with an original cathode net, and the right side face of each original cathode net is provided with an elastomer; a new cathode net is arranged on the right side face ofeach elastomer, and each ion membrane is arranged between the corresponding new cathode net and corresponding new anode net of the same unit cell group. The novel INEOS membrane polar distance electrolytic cell has the advantages of being capable of reducing overvoltage, reducing damage of the ion membranes, providing convenience for replacing cathode and anode nets in the later period and increasing the effective electrolytic area, and reliable and safe during running.

The invention discloses an anti-deterioration storage method of frozen food. The anti-deterioration storage method comprises the following steps: spraying a trehalose solution to the surface of the to-be-frozen food; wherein the spraying amount is 0.2-0.4% of the weight of the to-be-frozen food, then putting the frozen food sprayed with the trehalose solution into a closed pressure bin, applying pressure for 1-2 h at the pressure of 80-120 Mpa, and then performing ventilation and airing under the room temperature condition to enable the moisture content of the frozen food to be not higher than4% for standby application; performing vacuumizing; performing bag opening packaging on the frozen food obtained after degassing treatment is completed; and freezing and storing, namely storing the packaged frozen food in a refrigeration house; according to the anti-deterioration storage method of the frozen food, surface treatment, vacuumizing, packaging and freezing storage are conducted on theto-be-frozen food, the fresh-keeping rate of the food can be achieved to the maximum extent, the expiration date of the food is guaranteed to the maximum extent, and therefore the expiration time ofthe food is shortened, the practical time of the food is prolonged, and practicability is achieved.