47results about How to "Improve reduction efficiency" patented technology

The invention relates to the technical field of desulfurization catalyst regeneration, in particular to a desulfurization catalyst integrated regeneration device and a processing technology thereof.The desulfurization catalyst integrated regeneration device comprises a reduction tower body, an L-shaped supporting rod is fixedly connected to the upper surface of the reduction tower body, a driving mechanism is fixedly connected to the upper end of the L-shaped supporting rod, and a stirring mechanism is fixedly connected to the side face of the L-shaped supporting rod; a turning mechanism is arranged between the driving mechanism and the stirring mechanism, a lifting mechanism is fixedly connected to the upper surface of the reduction tower body, and an air exchange mechanism is arranged on the inner wall of the reduction tower body. The baffles are driven by the sliding rods to turn over on the side faces of the special-shaped sliding grooves, and the baffle at the other end is driven by the third transmission belt, so that the two communicating transoms can exchange air through the air inlet electric fan and the air outlet electric fan, the constant temperature in the reduction tower body is guaranteed, the manufacturing cost is low, and the service life is long; constant temperature is adjusted in a physical ventilation mode, and the error rate is greatly reduced.

The invention discloses a repairing agent and method for repairing hexavalent chromium contaminated soil. The repairing agent is composed of pyroligneous liquor and ferrite, the addition amount of the ferrite in each milliliter of the pyroligneous liquor is 0.006-0.08 g, and the concentration of the pyroligneous liquor is 50-100%. The method comprises the following steps: adding a repairing agent into the chromium-contaminated soil, adding deionized water, uniformly stirring the soil, keeping the water content of the soil, standing and maintaining, reducing hexavalent chromium in the soil into trivalent chromium, and reducing and removing the hexavalent chromium in the chromium-contaminated soil. The method is high in hexavalent chromium removal efficiency, high in operability, good in practicability and high in applicability in strong alkaline soil.

The invention discloses a device and method for preparing a silicon-based material through magnesiothermic reduction of a silicon-containing precursor. The device comprises a furnace body, a vacuum or atmosphere control system, a double-temperature-zone heating control system, a furnace body tilting system, a furnace body rotating system, a water cooling system, a heat preservation pipe plug and a control panel. Feeding and discharging pipes are arranged at the two opposite ends of the furnace body; a hole-reserved partition plate is arranged in the cavity of the furnace body and divides the cavity of the furnace body into a magnesium material evaporation bin and a reduction reaction bin; and an air hole is formed in the hole-reserved partition plate and communicated with an air guide pipe with a hole, and the air guide pipe with the hole is located in the reduction reaction bin. A double-temperature-zone heating control system is adopted, the evaporation temperature and the reduction reaction temperature of a magnesium material can be independently adjusted, a magnesium steam perforated gas guide pipe of a special structure is designed inside, it is ensured that magnesium steam can be evenly distributed in a reduction reaction bin, meanwhile, the perforated gas guide pipe is prevented from being blocked, and the production efficiency is improved. The equipment can realize thermal reduction of the silicon-containing precursor by magnesium steam under a vacuum condition.

The invention discloses a Fe / Fe3O4 nano material loaded with ionic liquid, a preparation method of the Fe / Fe3O4 nano material and application of the Fe / Fe3O4 nano material in electro-catalytic nitrogen reduction. The preparation method comprises the following steps: dissolving FeSO4. 6H2O in oxygen-free water, fully stirring, adding a NaBH4 solution to obtain a black solid, carrying out centrifugal washing, and carrying out vacuum drying at 60 DEG C for 24 hours to obtain Fe / Fe3O4; dissolving the dried Fe / Fe3O4 in isopropanol, adding IL, carrying out ultrasonic treatment at room temperature for 2 hours, and then carrying out rotary evaporation at 60 DEG C to obtain an iron-based material (Fe / Fe3O4-IL) rich in ionic liquid; fe / Fe3O4-IL is taken, the surface of hydrophobic carbon cloth is coated with the Fe / Fe3O4-IL, the hydrophobic carbon cloth is placed at the room temperature for 30 min, the material is fully combined with the surface of the hydrophobic carbon cloth, and the Fe / Fe3O4-IL modified electrode is prepared. The Fe / Fe3O4-IL modified electrode disclosed by the invention is simple to prepare, shows relatively good activity on electro-catalytic nitrogen reduction, and has relatively high ammonia production rate and Faraday rate.

The invention discloses a tungsten alloy preparation method based on multi-element doping and wet ball-milling mixing, and relates to the technical field of powder metallurgy. The method comprises the following steps: weighing tungsten trioxide powder, nickel oxide powder and ferric oxide powder in proportion, and adding an isopropanol solvent for wet ball milling to obtain original slurry; carrying out ball material separation and drying on the original slurry, and fully reducing by using hydrogen to obtain W-Ni-Fe composite powder; multiple elements are doped in the W-Ni-Fe composite powder for secondary material mixing, and multi-element doped mixed powder is obtained; the multi-element doped mixed powder is put into a rubber sleeve and then subjected to cold isostatic pressing, and a W-Ni-Fe alloy bar blank is obtained; and the W-Ni-Fe alloy bar blank is subjected to sintering and vacuum annealing, and the W-Ni-Fe alloy is obtained. According to the embodiment of the invention, the problem that the raw material powder is difficult to mix uniformly in the dry mixing process is solved, and the distribution uniformity of Ni, Fe and doped elements in the multi-element doped mixed powder is improved.

The application discloses a data reduction method and device applied to a general-purpose graphic processor, which can be applied to the technical field of information processing. The data reduction method applied to the general-purpose graphic processor comprises the following steps: grouping elements in received first vector data to generate multiple groups of second vector data; wherein each group of second vector data contains the same number of elements; reducing elements with the same position in the multiple groups of second vector data to generate a first reduction result; reducing the first reduction result to generate a second reduction result, and storing the second reduction result to a scalar memory. The data reduction method applied to the general-purpose graphic processor can greatly improve the reduction efficiency of vector data of the general-purpose graphic processor.

This invention proposes a plasma-heated direct reduction vertical shaft furnace and a method for reduction ironmaking. The vertical shaft furnace has a furnace body and a hopper. The furnace body includes an independent cylinder and a furnace cooling section. The independent cylinder is connected to the hopper, and hollow graphite electrodes are installed on the independent cylinder. The hollow graphite electrodes are connected to a reducing gas source device to ionize a first portion of the reducing gas supplied by the reducing gas source device and generate high-temperature ionized gas. The furnace cooling section is located below the independent cylinder and is connected to the reducing gas source device. A second portion of the reducing gas supplied by the reducing gas source device enters the furnace cooling section and is preheated by the high-temperature reduced iron therein. The preheated second portion of the reducing gas enters the independent cylinder and, together with the high-temperature ionized gas, reduces the green pellets that have entered the independent cylinder. This invention avoids the safety hazards associated with heating outside the vertical shaft furnace and the transportation of high-temperature reducing gas.

The utility model provides a humus soil separation treatment system, which is used for resourceful treatment of humus soil and comprises a feeding section, a primary screening section, a primary separation section and a secondary separation section which are connected in sequence, the primary screening section comprises a primary screening magnetic separator, an inlet of the primary screening magnetic separator is connected with the feeding section, and the primary screening magnetic separator is used for receiving humus soil and separating and storing magnetic substances after magnetic separation; the remaining materials are conveyed to the first-stage separation section; the primary separation section comprises a jigger and a shaking table, excess materials of the primary screening section enter the jigger, surface-layer large materials, bottom-layer concentrated materials and tailings are separated, the tailings are continuously conveyed to the secondary separation section, the bottom-layer concentrated materials are conveyed into the shaking table to be treated, and the surface-layer large materials are treated to separate precious metal; the secondary separation section comprises a drum screen, a vortex sorting machine and a precipitation and filtration device, after the tailings enter the drum screen, solid matters and sand-containing water are separated out, the solid matters are input into the vortex sorting machine for sorting, and the sand-containing water enters the precipitation and filtration device for separation treatment. According to the humus soil recycling device, humus soil is recycled, and the reduction efficiency of the humus soil is improved.

The present invention belongs to the technical field of catalyst preparation, and provides an ordered mesoporous carbon-confined nickel phosphide catalyst, a preparation method thereof, and an application of catalytic cellulose to sorbitol. The phytic acid used in the present invention has a strong chelating effect, and each phytic acid molecule can complex six nickel ions, so the ratio of nickel to phosphorus in phytic nickel is relatively fixed. Due to the close complexation of nickel and phosphorus, a high phosphorus utilization rate can be achieved by controlling the volume space velocity of flowing air and flowing hydrogen, so that the generated hydrogenation active center is pure phase Ni2P. In addition, the catalyst precursor is first heat-treated in an atmosphere of flowing air, the purpose is to introduce oxygen, reduce the content of carbon species, and avoid excessive carbon species from burying the metal active center; then switch to an atmosphere of flowing hydrogen, continue to heat up for reduction treatment, the purpose is to reduce the phytic nickel to generate Ni2P active center, and then increase the content of pure phase Ni2P.

The invention provides a method for removing hexavalent chromium in a water body, and belongs to the field of water body purification, and in particular, the method for removing hexavalent chromium in the water body provided by the invention comprises the following steps: adding a water body purifying agent into the water body containing hexavalent chromium, and carrying out oscillation or stirring treatment on the water body under the condition of controlling the pH value of the water body to be 3.5-7, the water body after oscillation or stirring treatment is filtered, hexavalent chromium in the water body is removed, and the water body purifying agent comprises chitosan. According to the method, the hexavalent chromium in the water body can be reduced and adsorbed by using the unmodified chitosan under the condition of controlling the reaction pH value, and the method for removing the hexavalent chromium in the water body is a novel water body purification method which is environment-friendly, low in cost, simple to operate and high in efficiency, and has a wide application prospect.

This invention discloses a direct ironmaking method and system using an electromagnetically heated rotary kiln in a plasma-cracking water hydrogen production environment, belonging to the field of metallurgical reduction technology. The method includes: feeding the raw materials to be reduced and a high-temperature reducing agent into an electromagnetically heated rotary kiln; purging the raw materials with high-temperature reducing gas while the rotary kiln rotates, resulting in two raw materials; subjecting the two raw materials to reduction treatments through high-temperature reducing gas purging and rotary kiln rotation; removing dust, evaporating and cooling the reduction products, and grinding them to obtain tail gas carrying ultrafine carbon powder, water vapor, reduced iron, and semi-coke; feeding the tail gas and water vapor into a plasma-cracking water hydrogen production reforming unit to obtain high-temperature hydrogen-rich syngas; cooling the high-temperature hydrogen-rich syngas and feeding it into a gas holder, then circulating it through a heating and pressurization process back into the electromagnetically heated rotary kiln. This invention solves the problems of low reduction efficiency and insufficient contact area in traditional ironmaking processes, achieving efficient recycling of reducing gas resources.

The invention discloses an automatic system for precisely reducing and controlling molten copper by using natural gas. The automatic system comprises a data collection module, a data processing module, a gas input module, a buffer module, a gas output module and a gas detection and discharge module, through real-time data collection, processing and control, the copper liquid reduction efficiency can be greatly improved, the energy consumption can be reduced, the copper liquid reduction accuracy can be improved, and the oxygen content and the temperature of the copper liquid can be controlled within an accurate range.

The present application belongs to the technical field of metallurgy and mineral processing suspension fluidization roasting, and particularly relates to a system and process for producing nickel by coal-based roasting reduction electric furnace smelting of laterite nickel ore. The system comprises a feeding drying unit, a preheating drying and crushing unit, a heat supply heating unit, a coal-based pre-reduction unit, an electric furnace smelting waste heat recovery unit, a dust removal, powder conveying and desulfurization unit, and the laterite nickel ore is processed by the "dry powder crushing, coal suspension roasting, coal-based pre-reduction, and ore-smelting electric furnace" technology. The present application has strong adaptability to raw materials, can produce high-value products from cheap resources, and adopts multiple energy-saving technologies in the new process to greatly reduce energy consumption and realize efficient use of energy. The present application makes up for the limitations and deficiencies of the traditional RKEF process, can reduce process energy consumption, improve resource recovery rate, provides a new innovative breakthrough direction for efficient utilization of laterite nickel ore resources for smelting nickel-iron alloy, and can greatly improve the economic value of the development and utilization of such resources.

The present application relates to the technical field of metal magnesium production, and particularly relates to a metal magnesium vertical reduction furnace loading structure and method, wherein the loading structure comprises a spherical charger, the spherical charger is provided with a magnesium vapor overflow hole, the spherical charger is filled with pellet material, a plurality of spherical chargers are connected by steel ropes one by one, and the plurality of spherical chargers are arranged in a reduction tank during processing of the reduction furnace. The spherical charger is filled with pellet material, and the spherical charger is arranged in the reduction tank, so that the problem of difficulty in magnesium vapor overflow, low reduction efficiency and slag sticking caused by falling and crushing of the pellet material when the pellet material is directly poured into the reduction tank is solved.

The invention discloses a hydrogen and CO2 coupled blast furnace ironmaking method, and belongs to the technical field of ferrous metallurgy equipment and processes. The method comprises the following steps: carrying out component separation treatment on the blast furnace top gas, and respectively capturing CO2 gas and unreacted CO gas in the blast furnace top gas; a reverse water-gas shift reactor is arranged outside the blast furnace, and captured CO2 and external hydrogen are converted into CO-rich reducing gas; and mixing and tempering the generated CO-rich reducing gas and the separated CO gas, and cooperatively spraying into the blast furnace from a tuyere and / or a furnace body part of the blast furnace to participate in iron ore reduction reaction. According to the invention, the hydrogen-carbon conversion process with strong heat absorption is independently carried out outside the furnace, so that the combustion loss of coke is obviously inhibited from dynamic and chemical equilibrium, and double closed-loop circulation of carbon in the smelting system is realized. A multi-dimensional space differential injection mechanism is constructed, the comprehensive utilization rate of hydrogen is remarkably increased, and meanwhile the fuel ratio and the carbon dioxide emission of the blast furnace are reduced.

The invention relates to an ionic liquid loaded Fe2O3-CNT material and application of a preparation method of the ionic liquid loaded Fe2O3-CNT material in electrocatalytic reduction of N2. The preparation method comprises the following steps: adding FeNO3. 9H2O and a carbon nanotube into ethanol, and heating; placing the sample in a porcelain boat, calcining, cooling to room temperature, and collecting the sample for later use; the preparation method comprises the following steps: adding Fe2O3-CNT and an ionic liquid IL into isopropanol, stirring at room temperature, and rotating an evaporator to remove a solvent, so as to obtain a black solid Fe2O3-CNT-IL; and taking Fe2O3-CNT-IL, coating the surface of hydrophobic carbon cloth with the Fe2O3-CNT-IL, and standing at room temperature for 10 minutes, so that the material is fully combined with the surface of the hydrophobic carbon cloth to obtain the Fe2O3-CNT-IL modified electrode. The Fe2O3-CNT-IL modified electrode is simple to prepare, shows excellent activity on electro-catalytic nitrogen reduction, and has high ammonia production rate and Faraday rate.

The present invention provides a method for preparing a core-shell structure zinc tungstate@zinc flower composite photocatalytic material: (1) dissolving and dispersing sodium alginate and sodium tungstate dihydrate in deionized water to obtain component I; dissolving and dispersing zinc acetate dihydrate in deionized water to obtain component II; adding component II to component I under stirring conditions to obtain a white suspension; (2) transferring the suspension to a closed polytetrafluoroethylene-lined hydrothermal reactor for hydrothermal reaction to obtain a core-shell structure zinc tungstate@zinc flower composite photocatalytic material. The present invention also discloses the use of the core-shell structure zinc tungstate@zinc flower composite photocatalyst prepared by the above preparation method in photocatalytic purification of wastewater containing chromium and heavy metal ions. The core-shell structure zinc tungstate@zinc flower composite photocatalytic material provided by the present invention exhibits excellent photocatalytic activity and photocatalytic cycle stability to wastewater containing chromium and heavy metal ions.

The utility model provides an efficient ozone sterilization device for purified water treatment. The high-efficiency ozone sterilization device for purified water treatment comprises an ozone generator body; the exhaust pipe is fixedly mounted at the exhaust end of the ozone generator body; the plurality of branch pipes are fixedly mounted at the bottom of the exhaust pipe; the plurality of exhaust heads are fixedly mounted at the bottoms of the plurality of branch pipes respectively; the plurality of fixing covers are fixedly mounted on the plurality of branch pipes respectively; and a plurality of electric telescopic rods, wherein the plurality of electric telescopic rods are fixedly mounted on the exhaust pipe. The efficient ozone sterilization device for purified water treatment provided by the utility model has the advantages that a plurality of bottles of canned water can be sterilized at the same time, the treatment efficiency is higher, and tail gas can be recycled.

This invention provides an iron-sulfur-based reducing material, its preparation method, and its uses. The preparation method includes the following steps: (1) heating ferrous sulfate raw material under a first inert atmosphere; (2) introducing a reducing gas with a flow rate of 5-400 mL / min into the ferrous sulfate raw material and performing a calcination reduction treatment at a temperature of 400-900℃ for 0.5-5 h to obtain a solid mixture; (3) cooling the solid mixture under a second inert atmosphere to obtain the iron-sulfur-based reducing material. The preparation method of this invention has the advantages of simple preparation process, clean and environmentally friendly, and easy to achieve large-scale production; the prepared iron-sulfur-based reducing material can simultaneously provide Fe(O), Fe(II), and S(-II), greatly improving the activity and utilization rate of the iron-sulfur-based reducing material, and is suitable for application in the field of heavy metal contaminated soil and groundwater remediation.

The invention belongs to the technical field of metallurgy, and particularly relates to a device and method for treating sefstromite, the device for treating the sefstromite comprises a rotary kiln, a feeding system, a ball mill and a magnetic separator, the rotary kiln comprises a barrel, a feeding pipe, a discharging pipe and a driving device, a heat insulation layer is arranged outside the barrel, at least one heating module is arranged outside the heat insulation layer, and the heating module is connected with the driving device. The heating module comprises an electromagnetic coil and an electromagnetic frequency conversion control cabinet, and the electromagnetic coil surrounds and wraps the heat insulation layer; the feeding system is connected with a feeding pipe of the rotary kiln and comprises a coal feeding system and a sefstromite feeding system; a discharging pipe of the rotary kiln is sequentially connected with the ball mill and the magnetic separator. The rotary kiln of the device adopts electromagnetic induction heating, the situation that a large amount of flue gas generated by combustion takes away mineral powder is avoided, the temperature in the rotary kiln is uniform and easy to control, and coal is adopted as a reducing agent, so that feeding of the mineral powder into the kiln is achieved, the reduction efficiency is higher, separation of iron, vanadium and titanium is better facilitated, and efficient recovery of vanadium and titanium is facilitated.

The invention discloses a novel dry process cement kiln using an external decomposition furnace to reduce NOx emission technology, belonging to the technical field of cement production, including an original cement rotary kiln system and an external decomposition furnace system, wherein the original cement rotary kiln system includes an original decomposition furnace and a kiln tail smoke chamber, wherein the output end of the kiln tail smoke chamber is fixedly connected to the input end of the original decomposition furnace. The invention uses a pulverized coal burner installed on one side of the external decomposition furnace to facilitate mixing pulverized coal with high-temperature flue gas discharged from the inside of the cement rotary kiln, and burning to produce CO and H2 under the regulation of lack of oxygen, and uses CO and H2 as reducing agents to reduce NOx in the high-temperature flue gas generated by the cement rotary kiln, and uses a distributing valve installed to control the flue gas temperature in the external furnace by adjusting the amount of pulverized coal fed, and uses a decomposition furnace shrinkage gate valve installed to extend the contact time of pulverized coal with high-temperature flue gas under the condition of lack of oxygen, thereby improving the NOx reduction efficiency, reducing the NOx emission, and increasing the effective volume of the decomposition furnace.

The invention discloses a carbon monoxide removal device and method, relates to the field of carbon oxide separation, and solves the problems that when an existing carbon monoxide removal device is used, the catalytic efficiency of a catalyst is relatively low, and the catalyst is difficult to be subjected to reduction treatment synchronously at the high temperature of a reaction. Comprising a tank body, a removal mechanism, a reduction mechanism, a switching mechanism, a gas inlet pipe and a gas outlet pipe, the removal mechanism comprises a switching column and a storage tank, and the reduction mechanism comprises a spiral pipe. The high temperature generated in the catalytic reaction is used for heating the reducing gas in the spiral pipe, then the high-temperature reducing gas is output into the corresponding storage tank for reduction treatment, and the switching mechanism is used for stirring the catalyst in the storage tank, so that the efficiency of the catalytic reaction and the reduction process is improved; and meanwhile, the position of the storage tank in the switching column can be switched.

The present invention discloses a carbon quantum dot electrolyte solution for a photoelectrochemical cathode reduction system, which is synthesized by a hydrothermal method using a cationic surfactant as a precursor, and the raw materials used are low-cost, simple and easy to obtain, and the synthesis method is simple. The synthesized carbon quantum dot aqueous solution can be directly used as an electrolyte solution in a photoelectrochemical cathode reduction system. Compared with traditional electrolyte solutions, the carbon quantum dot electrolyte solution of the present invention significantly promotes the photoelectrochemical activity of the photoelectrochemical cathode reduction system, and different precursors can be selected to synthesize different carbon quantum dot aqueous solutions, realizing multiple functions such as water decomposition to produce hydrogen, oxygen reduction to prepare hydrogen peroxide, and the system stability is relatively high.

This utility model discloses a sludge reduction device based on porous packing, belonging to the field of sludge reduction technology. It includes an inlet pipe, a reduction mechanism fixedly connected to its outer surface, a filter assembly movably connected to the inner cavity of the inlet pipe, and an outlet pipe fixedly connected inside the reduction mechanism. A valve is installed on the outer surface of the outlet pipe. Through two aerators and a stirring assembly, air can be supplied to the reaction tank to form a stable aerobic environment, providing sufficient oxygen for the aerobic metabolism of microorganisms and accelerating the decomposition of organic matter in the sludge. Simultaneously, the water flow disturbance generated by aeration and the stirring action of the stirring assembly promote full contact between the wastewater and the biofilm on the porous packing, significantly improving mass transfer efficiency. In this environment, microorganisms can more fully utilize the organic matter in the wastewater, accelerating their own metabolism and sludge decomposition, thus improving sludge reduction efficiency, effectively reducing subsequent sludge treatment costs and environmental pressure, and enhancing the practicality of the device.

The invention provides a gas-based shaft furnace top gas discharging device and a discharging method.The gas-based shaft furnace top gas discharging device comprises a material distribution tank, a discharging channel and a plurality of gas discharging units, the discharging channel is connected to the material distribution tank and used for connecting the material distribution tank and a gas-based shaft furnace, and the gas discharging units are connected to the discharging channel. The multiple exhaust units are arranged in the circumferential direction of the gas-based shaft furnace and connected with the gas-based shaft furnace. The multiple exhaust units are arranged in the circumferential direction of the gas-based shaft furnace, so that furnace top gas in the gas-based shaft furnace can be exhausted through all the exhaust units, it can be ensured that airflow in the gas-based shaft furnace is evenly distributed, the temperature distribution difference in the shaft furnace is small, the reduction efficiency is improved, and therefore the overall metallization ratio of reduced iron products is increased.

According to the pellet feeding system provided by the invention, the structure of the pellet feeding system is improved, so that the reduction efficiency of a shaft furnace can be improved. The pellet feeding system comprises a fixed screen assembly, a first vibrating screen assembly, a storage assembly and a second vibrating screen assembly. The fixed screen assembly is provided with a fixed screen feeding port, a fixed screen discharging port and a fixed screen undersize outlet. The first vibrating screen assembly comprises a first screen feeding port and a first screen undersize outlet. The second vibrating screen assembly comprises a second screen feed port and a second screen undersize outlet; the fixed screen feed port is used for being communicated with a material source part; an undersize product outlet of the fixed screen is communicated with a feeding hole of the first screen, and an undersize product outlet of the first screen is communicated with a feeding hole of the material storage assembly; a discharging port of the storage assembly communicates with a feeding port of the second screen, and a screen underflow outlet of the second screen is used for communicating with a fuel inlet of the shaft furnace so as to provide fuel for the shaft furnace.

The utility model discloses a computer main board and electronic equipment, the computer main board comprises a main board body, a storage interface, a display port, a network communication interface and a restoration function port, and the main board body is further provided with a firmware program and a PCH chip; the storage interface is connected to the main board body through a storage signal line, the display port is connected to the main board body based on a display driving unit, the network communication interface is connected to the main board body through a communication signal line, and the restoration function port is connected to the main board body through a light touch key; the mainboard main body is connected with the USB equipment through the power switch chip so as to realize self-recovery of the USB equipment based on a carried firmware program; a CMOS information clearing interface is arranged on the mainboard main body, so that the platform path controller is restarted when the PCH chip is started abnormally. According to the computer mainboard, the external port can be flexibly configured by a user according to different application scenes, so that the functions are maximized, the cost and the power consumption are reduced, and the application range is wider.

The invention relates to the technical field of photocatalysis, and discloses a preparation method of an ammonia preparation material TiO2 / Fe4N / C. The preparation method comprises the following steps: S1, preparing an MFN precursor; the specific method comprises the following steps: adding FeCl2. 4H2O and MoCl5 into deionized water according to a certain proportion, then adding nitrilotriacetic acid and isopropyl alcohol (IPA), stirring until the nitrilotriacetic acid and the isopropyl alcohol are completely dissolved, transferring into a reaction kettle, keeping in an oven at 150-200 DEG C for 4-8 hours, then alternately and repeatedly washing a sample with distilled water and ethanol, and then drying at 50-80 DEG C for 6-24 hours to finally obtain a MoO2 / Fe4N / C (MFC) precursor, and S2, preparing the Fe4N / C hollow sphere. The TiO2 / Fe4N / C material synthesized by the preparation method of the material TiO2 / Fe4N / C for preparing the ammonia through photocatalytic nitrate reduction is used for preparing the ammonia through reduction, different from a traditional Have-Bosch method for synthesizing ammonia, the method is used for preparing the ammonia through photocatalytic nitrate reduction, and the method has the advantages of being simple in synthesis method, convenient to operate, good in light stability, environmentally friendly and excellent in photocatalytic performance.

The invention provides a passenger track identification method and system, and belongs to the technical field of target identification, and the method comprises the steps: constructing a monitoring camera network topology structure, dividing regions according to a people flow density principle, and calculating the weight of a vertex of each monitoring camera based on a queuing theory model; according to the calculated vertex weight, performing vertex weighting operation on the constructed monitoring camera network topology structure, and constructing a vertex weighted directed graph; the weights are distributed to the vertexes in the vertex weighted directed graph, an improved shortest path algorithm is combined and used, the weights between the vertexes, the historical path weight and the path length are comprehensively considered, a comprehensive evaluation function is constructed, an optimal video stream path is selected, and a target passenger is determined according to the optimal video stream path. According to the method, the queuing theory model and the vertex weighted directed graph theory are applied to realize intelligent selection of monitoring camera videos, so that the video processing efficiency and the resource utilization rate are improved, and the efficiency and the accuracy of passenger behavior track restoration are improved.

The invention relates to a molybdenum isocaprylate catalyst and a preparation method thereof, and belongs to the technical field of metal organic compounds. The method for preparing the molybdenum isocaprylate catalyst comprises the following steps: firstly, mixing a molybdenum source, isocaprylic acid, acetic acid and a reducing agent according to a molar ratio of 1: (2.5-4.5): (1.5-2.5): (1.5-2.5), and carrying out mixed heating reaction at 80-100 DEG C for 1-3 hours; then carrying out reduced pressure distillation, heating to 120-140 DEG C, adding 0.8-1.5 times of a reducing agent and 0.01-0.1% of a pour point depressant, and continuously reacting for 1-3 hours; and carrying out reduced pressure distillation, heating to 180-200 DEG C, and keeping for 1-3 hours to obtain the molybdenum isocaprylate catalyst which is good in flowability and not easy to solidify. According to the invention, oxalic acid or hydrazine hydrate is used as a reducing agent, and polymethacrylate or octadecyl polyacrylate is introduced as a pour point depressant, so that the molybdenum content of the catalyst is effectively increased to 16%, the defect of easy solidification in a traditional preparation method is avoided, and the fluidity and industrial applicability of the catalyst are significantly improved. The method is simple in process, economical, environmentally friendly and suitable for industrial large-scale production.