57results about How to "Extended oxidation time" patented technology

The invention discloses a method for preparing a graphene oxide. The method comprises the following steps of: a) adding concentrated inorganic acid into a sealed reactor, adding graphite powder with stirring, reducing the temperature to the temperature of between 0 and 4 DEG C, and adding potassium permanganate to react for 0.5 to 2 hours; b) heating the obtained reaction system to the temperature of between 60 and 70 DEG C, and standing for 12 to 24 hours; c) adding hydrogen peroxide into distilled water in a volume ratio of 1:10, freezing to obtain ice, transferring the graphite oxide to the distilled water containing the hydrogen peroxide until the ice is completely dissolved, uniformly stirring, performing suction filtration, washing and drying to obtain the graphene oxide. The graphite powder, the concentrated acid and the potassium permanganate serve as raw materials, and the raw materials are low in cost and readily available; NO, NO2 and other toxic gases are prevented from being produced; the reaction temperature is as low as 60-70 DEG C; and the product has high dye adsorption capacity and high industrial application value.

The invention belongs to the field of environmental protection equipment, which relates to an ammonia desulfurization technology and a device utilizing high potential energy. The device comprises a desulfurizing tower, a concentrated crystallizing pool, an oxidation communication device, a low-level circulation pump, a high-level circulation pump, a crystal pulp pump and a centrifugal drying system which are positioned outside the tower; the desulfurizing tower is divided into an upper layer section and a lower layer section, and a gas cap through which only flue gas can pass is arranged between the upper layer section and the lower layer section; the lower layer section of the desulfurizing tower and the oxidation communication device are both provided with an oxidation gas distributor and an oxidation gas deflector; and spray heads are 2 to 4 layers. Under the precondition that normal desulfurization efficiency is ensured, the invention not only saves the investment but also reduces the running cost.

The invention aims at providing a preparation method for rapidly obtaining graphene in large quantities. On the basis of obtaining graphite oxides, the molecular thermodynamic movement of groups such as hydroxyl groups (-OH), carboxylic groups (-COOH) and the like which are generated on the surfaces of graphite oxide layers through oxidization can be induced and stimulated through microwave treatment so as to produce a momentary unsteady state, so that Van der Waals binding force between graphite layers is damaged, and graphene can be rapidly obtained in large quantities. The graphite oxides are obtained through the oxidization of metal salt such as potassium permanganate, potassium dichromate and the like as well as strong protonic acid such as concentrated sulphuric acid, concentrated nitric acid and the like, and then microwave irradiation is carried out under the conditions that the power ranges from 2 to 10 kW, the vacuum pressure ranges from 0.01 to 0.06 MPa and so on, so that microwave cleavage of the graphite oxides can be accomplished within 2 to 10 seconds, and graphene with less than ten layers can be obtained rapidly in large quantities. The preparation method can also control the layer number or the thickness of graphene products by controlling the concentration and the oxidation time of oxidizing mediums as well as the power, the degree of vacuum and the like of the microwave irradiation.

The comprehensive nutrient replenishing agent is prepared through mixing casein, taurine, lysine, unsaturated fatty acids, diet fiber, peptide with absorbed metal ions, mineral matter containing Ca, Mg, K, Fe, Zn, Co, Cr, Mn, Se and Cu and trace elements, composite vitamins in certain proportion; water dilution; spray drying to obtain powder; and high temperature sterilization. The product of the present invention can meet the need of children, pregnant women and women in suckling period in replenishing nutrients comprehensively and promoting the absorption of mineral and trace elements.

Preparation of human serum albumin modified black phosphorus quantum dots and applications of the quantum dots as a sensitizer are disclosed. A preparing method of the human serum albumin modified black phosphorus quantum dots includes (1) uniformly dispersing black phosphorus quantum dots into water to obtain an aqueous solution of the black phosphorus quantum dots; and (2) adding an aqueous solution of human serum albumin into the aqueous solution of the black phosphorus quantum dots obtained in the step (1), stirring the mixture, and performing centrifugation to obtain a precipitate that isthe human serum albumin modified black phosphorus quantum dots. The obtained human serum albumin modified black phosphorus quantum dots have a CIK cell therapy sensitizing characteristic, can effectively regulate immune cell cytokine secretion of CIK immune cells, sensitize CIK cells to suppress tumor cell proliferation, have a radioactivity sensitizing characteristic, and cooperate with X rays to inhibit tumor growth. The human serum albumin modified black phosphorus quantum dots can be developed as a novel sensitizer for immunotherapy and radioactive therapy and promote development of novelclinical antitumor medicines.

A green efficient electrochemical preparation method of high-quality water-soluble graphene comprises the following steps: (a) taking the water solution of aromatic carboxylic acid and metal hydroxideas an electrolyte, a graphite material as an anode material and a platinum sheet as a cathode material, and enabling two electrodes to be connected with a DC (direct current) voltage-stabilized powersupply; (b) switching on supply voltage to perform electrolytic reaction to obtain preliminarily dispersed water-soluble dispersion matter; (c) enabling the dispersion matter obtained in step b to besuccessively subjected to ultrasonic treatment and centrifugal washing to obtain high solid content graphene slurry; and (d) enabling the high solid content graphene slurry obtained in step c to be ultrasonically dispersed in water to obtain stable graphene dispersion liquid. The method has the advantages that the raw materials are easy to prepare and obtain, the technological process is simple,the post-treatment is simple and convenient, the cost is low, and the efficiency and yield are high. The prepared graphene has excellent conductive, heat-conducting and mechanical properties, and meanwhile can be stably dispersed in water for 6 months or more under the condition of not adding a dispersing agent.

The present invention provides a thermoelectric device comprising a film of thermoelectric material deposited on a substrate, and one or more electrodes located within the thermoelectric film, wherein the thermoelectric film is partially oxidized to form an oxide layer, which is melted to form an electrical insulating and protective barrier on a top surface of the film.

The invention relates to a method for preparing acetic acid through a catalytic carbonylation reaction, and mainly solves the problems of low stability of rhodium catalyst under the low water condition, low reaction activity when producing the acetic acid through low-water carbonylation, and short product oxidization time. Methanol or derivative of the methanol is adopted as a raw material, and is carbonylated with a liquid reaction composition to synthesize acetic acid; the reaction composition comprises the rhodium catalyst, a halogen promoter, methyl acetate, the acetic acid, water, a iodide-salt cocatalyst and a ruthenium complex used as a stabilizing agent, wherein the ruthenium complex is selected from at least one of [Ru(Co)aIb]n, Mn<+>[Ru(CO)aIb]<->n or Mn<+>[RuIb]<->n. The technical scheme solves the problems better, and can be applied in the industrial production of preparing the acetic acid through the catalytic carbonylation reaction.

The embodiment of the invention discloses a formulation and a sintering method for ultra-flat glaze, applying to the field of industrial production. The formulation comprises potash feldspar, calcite, quartz, kaolin, zinc oxide, barium carbonate and calcined kaolin, wherein the total content of AL2O3 in the formulation is 12-15%, the contents of solvents are 4.3-4.8%, and the solvents include K2O, NA2O, CaO, ZnO and BaO. According to the embodiment disclosed by the invention, the surface of the glaze can be flatted and smoothened, and pores are reduced.

The invention relates to a method for preparing a sustained release potassium ferrate clathrate compound for water treatment. The method includes the following steps that NaOH and Fe(NO3)3, 9H2O are dissolved in a 10% NaClO solution under the ice-bath condition, stirring is performed for reaction for 1.5 to 2 hours, suction filtration is performed to obtain a sodium ferrate liquid, a 45mL saturated KOH solution is added into the sodium ferrate liquid, then stirring and suction filtration are performed to obtain a potassium ferrate liquid, ethyecellulose and polyethylene are added into cyclohexane, heating is performed to reach 80 DEG C, stirring is performed continuously, heating is stopped to cool to reach 60 DEG C, the potassium ferrate liquid is added, then stirring is performed continuously, after a while, a potassium ferrate clathrate compound and a mixed liquid are subjected to centrifugal separation, and vacuum drying is performed to obtain the dry sustained release potassium ferrate clathrate compound. By means of the method for preparing the sustained release potassium ferrate clathrate compound for water treatment, oxidation time of the potassium ferrate clathrate compound on pollutants can be prolonged, the preparation method is simple, the decolorization effect on dyestuff wastewater is good, and thereby, market prospect is wide.

The invention discloses a foil producing machine preventing copper foil white spot forming. The foil producing machine comprises an electrolytic cell. An anode plate and a cathode roller are arranged in the electrolytic cell. A copper foil winding device is arranged on the right side of the cathode roller. A liquid spraying pipe is arranged on the side face of an inlet of the cathode roller. A plurality of circular holes arranged at equal intervals are formed in the liquid spraying pipe. The foil producing machine has the beneficial effects that the liquid spraying pipe covering the roller face width of the cathode roller is arranged above an ordinary cathode roller, and before the cathode roller enters the electrolyte face, the roller face of the cathode roller is completely covered with an electrolyte solution, and the possibility of overflow liquid foam pollution is eliminated from the source. The structure is simple, generation of electrolysis copper foil white spots can be effectively prevented, the time of oxidization of the roller face of the cathode roller can be prolonged as well, the grinding frequency of the cathode roller is reduced, and the service life of the cathode roller is prolonged.

The invention belongs to the technical field of loaded polyoxometallate catalysts, and provides a high-dispersion polyoxometallate magnetic microsphere catalyst, and a preparation method and application thereof so as to overcome the defects that polyoxometallate used as a catalyst is small in specific surface area, few in reaction activity sites, prone to aggregation, soluble in water, difficult to separate and recycle and the like. Dawson type phosphotungstate is loaded onto a CS@Fe3O4 microsphere by a covalent bonding method, and a covalent loaded Dawson type phosphotungstate magnetic microsphere P2W17-CS@Fe3O4-1 is obtained; or, Keggin type phosphotungstate and the Dawson type phosphotungstate are respectively loaded to an organic modified magnetic Fe3O4 microsphere by an electrostaticbonding method, and loaded Keggin type phosphotungstate and loaded Dawson type phosphotungstate are obtained. The dispersity and the specific surface area of the polyoxometallate are improved, the catalytic oxidation activity of the polyoxometallate and the oxidation efficiency of tetrahydrothiophene are improved, and a magnetic carrier provides favorable conditions for catalyst separation and recycling.

The invention discloses a copper and iron alloy for producing a soldering bit and a production technology thereof. The technology comprises the following steps: preparing the following raw materials in weight percentage: 47.35-63.15% of copper and 36.85-52.65% of pure iron powder; adding prepared copper into a smelting furnace and smelting the copper into a liquid state at a high temperature; adding part of pure iron powder into the smelting furnace, continuously smelting and uniformly agitating the mixture; detecting the weight percentage of the iron in the copper and iron alloy in the smelting furnace by a spectrograph, adding the rest of pure iron powder while detecting, continuously smelting, and stopping adding pure iron powder until the iron content in molten copper and iron alloy reaches 36.85-52.65%; after the temperature of the copper and iron alloy reaches a refining temperature, discharging the copper and iron alloy out of the furnace, and molding through casting; hot-rolling the copper and iron alloy molded through casting into an alloy bar and processing the alloy bar into a soldering bit finished product. The alloy only comprises copper and pure iron powder, electroplating processing is not required, and pollution to the environment is reduced. Meanwhile, the heat conductivity of the soldering bit and the tin loading smoothness are greatly improved, the service life of the soldering bit is prolonged, and the production cost is lowered.

The invention provides a coal-fired combustion improver with high stability. The coal-fired combustion improver is innovatively characterized by comprising the following components in percentage by weight: 20-30% of an oxidizing agent, 2-8% of a stabilizer, 20-30% of a catalyst, 2-3% of a dispersing agent, 10-20% of an emulsifier and 10-20% of a penetrating agent, wherein the stabilizer comprises 3,5-ditert-butyl-4-hydroxybenzoyl hydrazine, xylogen, silica powder, sodium sulfanilate and zinc stearate, or 3-methyl-5-tert-butyl-4-hydroxybenzoyl hydrazine, xylogen, silica powder, sodium sulfanilate and zinc stearate. According to the coal-fired combustion improver disclosed by the invention, the effect of adding the stabilizer into the coal is to mainly achieve the effects of delaying the decomposition rate after the oxidizing agent is heated and increasing the action time in the combustion system, and then the actual combustion effect is improved.

The invention discloses a direction-injection diesel engine combustion chamber, belonging to the technical field of internal combustion engine structures and combustion devices. The invention is characterized in that guide convex arcs and small steps are arranged on the wall surface of the combustion chamber. The guide convex arcs and the small steps are arranged fully circumferentially, intermittently or locally. The positions of the guide convex arcs and the small steps on the wall surface are related to the shape of the combustion chamber, the size of injection holes, the angle of the injection holes, oil injection pressure, intake swirl ratio and other parameters. The cross section of each guide convex arc is semicircular, elliptic and the like. The technology adopts the guide bundle spray and stratification theory, adopts 'double wall surface injection' method to inhibit the generation of high-concentration NO at the tips of flames and promotes the mixing of the spray tips. The invention has the advantages that the even mixed gas can be formed at the premixing combustion step, the rapid mixing of oil and gas is realized, the travel time of carbon granules is shortened and thereby the oxidization time of the carbon granules is increased.

The invention discloses a compound efficient energy-saving desulfurization, denitrification and dedusting integrated purifying tower and relates to environmental protection equipment. The compound efficient energy-saving desulfurization, denitrification and dedusting integrated purifying tower comprises a desulfurization device and a denitrification device. The desulfurization device comprises a desulfurization tower and a main desulfurizing agent pipe, the inner upper end of the desulfurization tower is connected with a grating filtering layer, purifying filler is arranged on the grating filtering layer, the main desulfurizing agent pipe is vertically fixed in the desulfurization tower through a supporting component, and a plurality of nozzles are connected to the main desulfurizing agent pipe along the height direction. The denitrification device comprises a denitration tower and a spherical gas surge tower, the gas surge tower is fixedly connected to the upper end of the denitration tower, the denitration tower is fixed in an inner cavity of the denitration tower through a connecting component, and a denitration oxidizing agent pipeline is arranged between the denitration tower and the desulfurization tower and is provided with a plurality of liquid outlet holes. A flue gas inlet and a flue gas outlet are formed in the lower end of the desulfurization tower, the flue gas inlet passes through the denitration tower to be communicated with an inner cavity of the desulfurization tower, and the flue gas outlet is communicated with the inner cavity of the denitration tower. The compound efficient energy-saving desulfurization, denitrification and dedusting integrated purifying tower has the advantages of good purifying effect and low cost.

The invention discloses a deoxidation smelting method of slab Q235 steel and the slab Q235 steel, and relates to the technical field of smelting. The smelting method comprises the steps that molten iron and scrap steel are loaded, the top-bottom combined blowing converter blowing process is adopted, and argon is blown from the bottom in the whole process; slag charge is loaded, the loading amount of the slag charge at the beginning of blowing is 30%, and the rest 70% of the slag charge is completely added within 10 min after blowing is started; the flow of the oxygen lance is controlled to be 33000-35000 m < 3 > / h The lance position of the oxygen lance during blowing is 1.8-2 m; manganese and silicon are added for tapping deoxidation alloying operation; after tapping, aluminum wire feeding operation is carried out in an argon station; transferring into an LF furnace for refining; and performing continuous casting. The smelting method can ensure good deoxidation of the molten steel, reduce subsurface bubbles generated by the molten steel, reduce the cost, ensure the castability of the molten steel and reduce the occurrence rate of edge cracks.

The invention discloses a heat treatment device for a crankshaft processing device. The heat treatment device for the crankshaft processing device comprises a normalizing chamber, an annealing chamberand a quenching chamber, wherein a support frame is arranged on one side of the normalizing chamber; a heat insulation door is arranged on one side of the inner part of the normalizing chamber; a moving frame is arranged above the support frame; a heater is arranged on the upper part of the inner part of the normalizing chamber; a telescopic cylinder is arranged under the moving frame; a pothookis arranged under the telescopic cylinder; a heater is arranged on the lower part of the inner part of the normalizing chamber as well; a first class of temperature sensor is arranged under the heater; the annealing chamber is arranged on the other side of the normalizing chamber; and the quenching chamber is arranged on one side of the annealing chamber. The heat treatment device for the crankshaft processing device has the beneficial effects that (1) a heat dissipation tank is arranged on one side of the quenching chamber, so that a medium in the quenching chamber can be cooled, the quenching efficiency is improved, and the heat treatment time is shortened; and (2) an oil quenching chamber is arranged at the tail end of the equipment, and a layer of oil is coated on the outer surface ofa crankshaft while secondary quenching is carried out at the same time, so that the crankshaft oxidizing time is prolonged.

The invention discloses a nitrogen-charging black tea fermenting method and relates to a tea production method. The method comprises five steps including a preparation stage, a green tea adding state, a fermentation stage, a nitrogen charging state and a fermentation stopping stage, wherein at the nitrogen charging stage, nitrogen is charged into a fermentation tank, so that the nitrogen content of the fermentation tank is gradually increased from 70% to 90%; at the fermentation stopping stage, tea in the fermentation tank is sampled once every 2-5 minutes, the color and the aroma of the tea are compared, and air introduction is stopped after the tea aroma meets the requirements. The content of nitrogen in the air can be increased and the oxygen content can be reduced through nitrogen charging, so that the fermentation time can be prolonged, and sampling analysis is facilitated.

The invention discloses a method for improving the stability and wear resistance of an automobile metal casting part, which comprises the following steps: die manufacturing: designing a die according to the actual size of the metal casting part, then printing a drawing, and manufacturing two dies which are matched with each other; the preparation method comprises the following steps: preparing raw materials, preparing and cleaning proper iron ingot raw materials, polishing and cleaning rust on the surfaces of iron ingots, heating and smelting the iron ingots to obtain molten iron, putting the molten iron into a smelting furnace, and adding a proper amount of metal powder into the smelting furnace to obtain mixed molten liquid. The wear-resistant coating is coated in the casting process of the metal casting part, the surface of the casting part is protected through the wear-resistant coating, so that the wear resistance of the casting part is improved, meanwhile, the wear-resistant coating can isolate direct contact between the casting part and air, and the oxidation time of the casting part is prolonged.

The invention discloses zinc oxide concentrate leaching equipment and a leaching manner thereof, and relates to the technical field of zinc hydrometallurgy. The leaching equipment comprises combined medium-leaching leaching tanks, a second dense pond, a second-section acid-leaching leaching tank, a third dense pond, a high-temperature and high-acid leaching tank, a first dense pond and a medium-temperature and medium-acid leaching tank. A south row of combined medium-leaching leaching tanks and a north row of combined medium-leaching leaching tanks are included. Six combined medium-leaching leaching tanks are distributed at equal interval in each row of combined medium-leaching leaching tanks. According to the zinc oxide concentrate leaching equipment and the leaching manner thereof, zincoxide concentrates are independently subjected to combined medium leaching, then high-temperature and high-acid leaching after liquid is centralized at a second-section acid leaching section to be subjected to combined acid leaching with the zinc oxide concentrates. Through the technology design, a high-iron solution can be treated in a centralized manner, supernatant quality control is not influenced, slag following path opening is achieved for a large amount of iron during second-section pressing filtration, the iron content of supernatant after liquid is within 100 mg / L, and the produced supernatant after liquid quality meets the purification operation requirement; and the manganese powder consumption is reduced, single consumption of leached manganese powder is greatly reduced and is 56 kg / T.Zn for average, and economic benefits are greatly improved.

The invention provides a novel engine without a crankshaft. The novel engine is composed of not less than two power cylinders, and includes the power cylinders, secondary expansion gas passages between the power cylinders, an impulse type lubrication system, a fuel injection system, a cylinder body temperature control system, an oxygen injection system, a ventilation system, a starting system, anECU and a power output system. A power cylinder using outputting reciprocating linear motion performed by pistons in the cylinders as a basic function is used as a unit, through the secondary expansion gas passages, exhaust gas in the power cylinder near the end of doing work by combustion expansion is introduced into another power cylinder piston under the compression stroke for secondary expansion work, and the combination of oil cooling and air cooling is adopted, the heat at the tops of the power cylinders is brought to the bottoms of the power cylinders through a double-layer spiral cooling liquid pipe to improve the secondary expansion work capability of the gas to improve the thermal efficiency of the engine, and finally, power output adopts a planetary gear mechanism to convert thereciprocating linear motion into a continuous rotary motion.

The invention discloses a method for preparing sulfuric acid from desulfurized gypsum in a secondary lead smelting process as a raw material. The method comprises the following steps of: (a) taking desulfurized gypsum waste residue in the secondary lead smelting process, dewatering and then baking the desulfurized gypsum waste residue; (b) adding pulverized coal and an additive to the baked desulfurized gypsum, crushing and grinding to form an even mixture, burning and decomposing the desulfurized gypsum after pre-heating, carrying out high-temperature oxidation reaction on product high-temperature SO2 smoke after dust removal and oxygen enrichment, and carrying out heat exchange on the mixed gas to dry the desulfurized gypsum waste residue; (c) reducing the temperature of the heat-exchanged mixed gas, carrying out oxygen-enriched oxidation on the mixed gas again under the condition that a catalyst V2O5 exists; and (e) absorbing the obtained SO3 gas by concentrated sulfuric acid. The sulfuric acid is prepared from the desulfurized gypsum waste residue in the secondary lead smelting process; and the problem of difficulty in processing the desulfurized gypsum is solved, and rubbish is reused, and meanwhile, domestic sulfur resources are saved.

The invention discloses a technology for processing vanadium extraction semi-steel. The technology includes technological processes of (1), feeding pig iron; (2), carrying out iron charging; (3), carrying out blowing; (4), adding coolants; (5), terminating blowing. Molten pig iron added during production according to the technology comprises chemical components including, by weight, 4%-5% of C, 0.08%-0.3% of Si, 0.2%-0.5% of Mn, 0.25%-0.3% of V, less then or equal to 0.25% of P, less than or equal to 0.07% of S and 93.58%-95.47% of Fe. The technology has the advantages that the original double-slag vanadium extraction smelting is replaced with semi-steel vanadium extraction, the yield of double-slag vanadium slag is approximately 30 Kg / t steel, the comprehensive grade is higher than 13%, and good benefits can be created for companies; slag splashing effects of semi-steel smelting converters can be obviously improved after semi-steel vanadium extraction is adopted, the fettling frequencies can be lowered, the operation rate of the converters can be increased, accordingly, the production efficiency can be improved, and the enterprise benefits can be increased.

The invention relates to a crack sealing material prepared from a crack sealing tape for road crack repairing and a net crack sticker. The sum of the content of petroleum asphalt, the content of SBS styrene thermoplastic elastomer and the content of rubber powder is 85-90%. The road petroleum asphalt is used as a main material, the SBS styrene thermoplastic elastomer has the advantages of both rubber and plastic and has tensile property, good low-temperature resistance, air permeability, solubility, flexibility, elasticity, heat resistance and unique skid resistance, and the rubber powder is waste heavy-load diagonal tire tread processing powder, is beneficial to improving the wear resistance, fatigue resistance, tear strength and other properties, and greatly relieves the pressure of waste tires on environmental protection. By means of the high-molecular structure and the polymerization capacity of an environment-friendly synthetic high-molecular polymer, all the components of the crack sealing material prepared from a crack sealing tape for road crack repairing and a net crack sticker can be kept in a uniform mixed state for a long time, precipitation and separation are not likely to happen, and long-term stability of the performance of the crack sealing material prepared from a crack sealing tape for road crack repairing and a net crack sticker is guaranteed.

The invention discloses a methanol-high-pressure-oxygen compound two-stroke engine. The methanol-high-pressure-oxygen compound two-stroke engine is composed of one or more air cylinder groups, each air cylinder group comprises a main air cylinder and a corresponding auxiliary air cylinder, and the main air cylinders are provided with starting fuel nozzles, methanol nozzles, oxygen nozzles and mainair cylinder exhaust valves and are not provided with air inlet valves; and connection channels are arranged between main air cylinder exhaust ports and the auxiliary air cylinders, the connection channels are provided with one-way valves at auxiliary air cylinder inlets, air in the main air cylinders only flows into the auxiliary air cylinders through the one-way valves, the auxiliary air cylinders are not provided with fuel nozzles and are provided with auxiliary air cylinder air inlet valves and auxiliary air cylinder exhaust valves, and the auxiliary air cylinder air inlet valves communicate with an engine air inlet pipe. Methanol is injected into the main air cylinders, the amount of oxygen injected in the main air cylinders is controlled, the degree of fuel combustion is controlled,high-temperature active air which is not completely burned in the main air cylinders is introduced into the auxiliary air cylinders to continue combustion, the cylinder-dividing circulation is achieved, the emission of harmful air is reduced, and the full combustion of fuel is achieved.