1098 results about "Low oxygen" patented technology

The invention relates to the technical field of sewage treatment, in particular to an aerobic aeration treatment system for plateau domestic sewage treatment, which comprises a pretreatment unit, a biological treatment unit, an advanced treatment unit and a recycling unit which are connected in sequence, the system further comprises a data acquisition module, an aerobic aeration intelligent regulation and control module, a biochemical environment constant-temperature maintenance module, a carbon-nitrogen proportion and backflow dynamic regulation and control module, a digital twinning and sludge characteristic simulation module and an energy collaborative scheduling module. Compared with the prior art which adopts a standard aeration strategy and cannot adapt to the special environment of low air pressure and low oxygen partial pressure of the plateau, the system can accurately adapt to the plateau environment by integrating real-time atmospheric pressure and water temperature monitoring, dynamically calculating the oxygen saturation solubility and correcting the aeration control target according to the oxygen saturation solubility, so that the aeration control target is optimized. Stable supply of dissolved oxygen required by biochemical reaction is ensured, and the technical bottleneck of low efficiency of traditional sewage treatment in plateau regions is fundamentally overcome.

The invention provides a metallurgical process optimization method and system for a low-oxygen low-nitrogen aluminum-vanadium alloy, and relates to the technical field of process optimizing.The method comprises the steps that correlation characteristics among process parameters are extracted through a three-layer gating map attention network, and a parameter coupling state vector is constructed in combination with a time sequence attention module; constructing a process prediction model based on the state vector, and fusing a thermodynamic equilibrium equation and a long-short term memory network to predict the oxygen and nitrogen content; a deep reinforcement learning network of a Soft Actor-Critic algorithm is adopted, the parameter coupling state vector and the oxygen and nitrogen content prediction value serve as state input, and the technological parameter adjustment amount is output; and planning and iteratively training a future adjustment strategy through Monte Carlo tree search to finally obtain an optimal process parameter combination meeting oxygen and nitrogen content constraints, thereby realizing intelligent optimization control of the metallurgical process.

The invention provides a method for detecting silicon single crystal COP free area distribution, and relates to the technical field of silicon single crystal quality detection.The method comprises the steps that a silicon wafer to be detected is cleaned to obtain a first silicon wafer; uniformly smearing a transition metal ion solution on the surface of the first silicon wafer to obtain a second silicon wafer; placing the second silicon wafer in a high-temperature environment, and performing heat treatment under three temperature gradients to obtain a third silicon wafer; wherein in the first stage, transition metal ions are diffused to the surface layer of the silicon wafer to activate oxygen precipitates in a Pv region, in the second stage, the transition metal ions are promoted to be diffused into the silicon wafer to develop a Pi low-oxygen region, and in the third stage, nuclei coalescence in a B-band region is activated at high temperature to form a differential arrangement ring; cleaning the third silicon wafer through a mixed acid solution to obtain a fourth silicon wafer; and placing the fourth silicon wafer in a preferential corrosion liquid for preferential corrosion, and carrying out COP free area distribution detection on the obtained detection sample wafer. According to the scheme, the definition of each region boundary can be improved, so that the detection accuracy of COP free region distribution is improved.

The invention belongs to the technical field of nano materials, and relates to a carbon thermal reduction driven high-entropy oxide metastable-state material and a preparation method and application thereof.The preparation method comprises the steps that S1, carbon and soluble metal salt are dissolved in a solvent for ultrasonic treatment, and a metal salt solution and a carbon suspension are obtained; s2, adding a metal salt solution into the carbon suspension, adding strong base, and stirring to obtain a coprecipitation polymer; s3, re-dispersing the coprecipitation polymer in the solvent, adding extra ferric salt and urea, mixing and stirring, and freeze-drying the mixed solution to obtain precursor powder; s4, performing staged annealing treatment on the precursor powder under low oxygen partial pressure to obtain a carbon-loaded high-entropy oxide metastable-state material; the prepared high-entropy oxide metastable-state material is of an alloy phase and high-entropy oxide double-phase coupling structure, the polarization loss of electromagnetic waves is enhanced through a heterogeneous interface, and the high-entropy oxide metastable-state material has the advantages of being excellent in impedance matching and wide in electromagnetic wave absorbing bandwidth and can be widely applied to the fields of industrial electronics, medical communication and military stealth.

The invention discloses a method for refining grains of a titanium alloy. According to the method, an original low-oxygen-content titanium alloy plate is subjected to cryogenic pretreatment, the temperature of the core of the original low-oxygen-content titanium alloy plate is reduced to a certain temperature, then the cryogenic low-oxygen-content titanium alloy plate is fed into a rolling mill, the single-pass reduction rate is controlled, cryogenic rolling is completed, high refinement and uniform distribution of crystal grains are achieved, and the low-oxygen-content titanium alloy plate is obtained. And the rolled titanium alloy plate is subjected to subzero treatment again, and the titanium alloy plate of the complex twin crystal structure formed by intersection of {11-22} and {10-11} twin crystals is obtained. The method has the beneficial effects that under the synergistic effect of low oxygen and deep cooling, even under the extremely small deformation amount, the cross effect of various twin crystal systems can be efficiently activated, a high-density and complex twin crystal structure is formed, high refinement and uniform distribution of crystal grains are achieved, then the mechanical strength and low-temperature toughness of the material are remarkably improved, and the service life of the material is prolonged. And the application requirements in a severe low-temperature service environment are met.

The invention discloses a preparation method of niobium-tungsten alloy spherical powder and a 3D printing method of the niobium-tungsten alloy spherical powder, and belongs to the technical field of refractory metal material preparation.The preparation method comprises the steps that niobium, tungsten, molybdenum and zirconium refractory metal raw materials are smelted to obtain cast ingots with uniform components, and hydride powder is formed after hydrotreating and mechanical crushing; spherical powder is prepared by adopting a plasma spheroidizing technology, then dehydrogenation is performed for 1-3 hours at the temperature of 450-750 DEG C, magnesium powder is added, treatment is performed for 2-5 hours in an inert atmosphere at the temperature of 800-1100 DEG C, and finally the low-oxygen niobium-tungsten alloy spherical powder with the oxygen content lower than 120 ppm is obtained. Compared with a traditional process, the spheroidizing treatment is innovatively carried out before the dehydrogenation and oxygen reduction process, the deoxidation efficiency is improved through the relatively small specific surface area of spherical powder, and oxygen content control is achieved in combination with magnesium powder heat treatment. The problems of high oxygen content and low powder yield in a traditional process are solved, and material support is provided for high-performance niobium-tungsten alloy components in the fields of aerospace, nuclear power and the like.

The invention provides a low-pressure low-oxygen training cabin control method, which is applied to a training cabin in a low-pressure low-oxygen environment, and comprises the steps: responding to a simulated target altitude, calling target air pressure corresponding to the target altitude, and adjusting the environment air pressure of the training cabin to the target air pressure; setting the simulation training duration of the training cabin, and respectively adjusting the oxygen concentration of the training cabin and the environment temperature of the training cabin to a target concentration and a target temperature; detecting the pressure, oxygen concentration and temperature of the training cabin, and performing wind power simulation in the low-pressure low-oxygen training cabin based on a preset training rule; and continuously monitoring the physiological index data of the personnel in the cabin until the simulation training duration is ended. The air pressure condition of a specific plateau environment can be quickly and accurately simulated, and the stability and consistency of the training environment are ensured. The basic and accurate automatic control of the training cabin environment is realized, and the training efficiency and effect are effectively improved.

The invention belongs to the technical field of electronic packaging and welding materials, and relates to lead-free solder powder for reflow soldering and a preparation method of the lead-free solder powder. The lead-free solder powder is based on a Sn-Ag-Cu alloy system, and melt purification, beta-Sn grain refinement and interface IMC stabilization are achieved by compositely adding trace Ce and Ni elements. The Sn-Cu-Ce alloy comprises the following components in percentage by mass: 2.9%-3.1% of Ag, 0.45%-0.55% of Cu, 0.01%-0.10% of Ce, 0.01%-0.05% of Ni and the balance of Sn and impurities. During preparation, a Ce-Ni intermediate alloy is adopted to introduce microalloy elements, and the spherical solder powder is obtained through vacuum melting, inert gas atomization and surface treatment. The obtained solder powder is low in oxygen content, good in wettability, slow in interface IMC growth after backflow, high in welding spot strength and excellent in thermal cycle reliability, and is suitable for the field of high-reliability electronic packaging.

The invention discloses a water quality monitoring device and a monitoring method thereof, belongs to the technical field of water quality monitoring, and solves the problems that trace hydrogen sulfide generated by sulfate reducing bacteria in a deposited layer at the bottom of a water tank which is not cleaned for a long time in a low-oxygen environment reacts with a platinum membrane electrode of a residual chlorine sensor to generate a platinum sulfide covering layer; and the electrode reading is continuously virtually high and drifts slowly. Comprising an optical transmitting module, an optical receiving module, a spectrum separation module, a signal conditioning module, a lock-in amplification module, a spectrum feature extraction module and a hydrogen sulfide recognition engine. Residual chlorine is monitored in a non-contact mode, deep ultraviolet pulse light is emitted to penetrate through a water body, a reflection spectrum is received, second derivative spectral characteristics are extracted through multichannel signal processing, and multivariable regression compensation is executed to calculate a real residual chlorine value after hydrogen sulfide interference characteristics are recognized. Meanwhile, the drift trend is quantified based on the double-time-constant integral, graded early warning is triggered, industrial standard signals are finally output, and the problem of electrode contact pollution is avoided in the whole process.

The invention discloses a low-oxygen high-purity zinc small ingot forming glove box device, which relates to the technical field of oxygen-free glove boxes, and comprises a box body, a glove box door arranged on one side of the box body, a glove opening arranged on one side of the box body, and a vacuum extraction system, the heating device is arranged on one side in the box body, the mold assembly is arranged on the other side in the box body, the crucible assembly is heated through the heating device, the transferring mechanism drives the crucible assembly to move and ascend and descend, the pouring assembly is used for pouring materials in the crucible assembly into the mold assembly, and the pouring assembly is located between the transferring mechanism and the mold assembly. The transfer mechanism, the dumping assembly and the mold assembly are sequentially lowered in height. The device is reasonable in design and ingenious in structural design in the transferring and transferring process, zinc materials are molten in the glove box, the glove box is vacuumized and then filled with inert gas, the zinc materials are prevented from being oxidized in the forming process, in addition, the transferring mechanism drives the crucible assembly to move and ascend and descend, and the dumping assembly assists the crucible assembly in obliquely dumping materials. By arranging the glove box, the product quality and the working efficiency are improved.

Disclosed in the present application are a battery, a gas sensing material and a preparation method therefor, a sensor and an electric device. The battery comprises a gas sensor, which comprises a gas sensing material, wherein the gas sensing material comprises an M / MXene composite material, the M / MXene composite material comprising a metal (M) monoatom and an MXene material, and / or comprising a metal (M) cluster and an MXene material. The gas sensing material provided by the present application can achieve the detection of a target gas in an oxygen-free or low-oxygen environment and the detection of gas production within a battery. Furthermore, the sensitivity and selectivity of gas detection can be improved, the response and recovery speeds can be increased, and the detection limit of a gas can be reduced.

The invention discloses a method for preparing low-oxygen tantalum powder through magnesium reduction. Aiming at the defects of more impurities, non-uniform particles, complex process and the like in the existing tantalum powder preparation technology, the method comprises the following steps: firstly, pretreating tantalum oxide powder and anhydrous calcium chloride, so that tantalum oxide is uniformly coated with calcium chloride; and mixing the pretreated raw materials with magnesium chips, introducing high-purity argon into a closed container for multiple times of replacement, carrying out heating and heat preservation to generate a reaction, separating a product, and then carrying out water washing, acid pickling and drying treatment to obtain the tantalum powder. According to the method, magnesium and tantalum oxide are fully reacted by virtue of heat absorption and fluxing effects of calcium chloride, so that composite substances such as tantalate are prevented from being generated, and impurity introduction is reduced. The oxygen content of the prepared low-oxygen tantalum powder is smaller than 3000 ppm, the apparent density is 1.3-1.5 g / cm < 3 >, powder particles are in a coralline shape and are uniform in size, operation is easy and convenient, the requirement for equipment is low, and the low-oxygen tantalum powder has good application prospects in the field of electronic component manufacturing.

The invention provides a method for degrading a perfluoroalkyl compound by activating peroxymonosulfate based on a graphite electrode. Comprising the following steps: step 1, pretreatment of a graphite rod electrode: soaking the graphite rod electrode in a sulfuric acid solution to remove surface impurities; step 2, preparing an electrolyte: preparing the electrolyte containing a perfluoroalkyl compound to be degraded, a background supporting electrolyte and peroxymonosulfate (PMS), and fully stirring to ensure uniform distribution; and step 3, inserting the pretreated graphite rod electrode into electrolyte in an electrolytic bath, adjusting current and voltage, and carrying out electrolysis under the condition of solution stirring. According to the method, the feasibility of activating the PMS to degrade the perfluoroalkyl compound by the low-oxygen-evolution-potential electrode is proved for the first time, and the cognitive limitation of the traditional technology is broken through; the prior art generally depends on a high oxygen evolution potential electrode (such as a BDD electrode, and the oxygen evolution potential is larger than 2.0 V / SHE) to activate PMS so as to degrade perfluoroalkyl compounds.

The invention discloses a layered structure solid oxide fuel cell composite cathode catalyst as well as a preparation method and application thereof, and belongs to the field of solid oxide fuel cells. The invention aims to solve the problem that the electro-catalytic performance and low-oxygen reduction reaction activation energy of the existing medium-temperature solid oxide fuel cell are poor. The Sr2. 9Ca0. 1Fe2O7-CuO composite cathode catalyst is prepared by adopting a sol-gel method and a solid phase method, the components in a sol-gel system are in a nanometer range, the reaction is easier to carry out, the reaction temperature is low, the prepared materials are uniformly mixed, and the sol-gel method is carried out in a solution, so that even if the content of doped elements is very low, the doping can be easily realized; the material is prepared by adopting a solid phase method, and the method has the advantages of convenience in operation, simple synthesis process, uniform particle size, no agglomeration of powder particles, good filling property, low cost, high yield and the like, so that the electrochemical performance of the cathode catalyst is improved, and the method is convenient to operate and suitable for industrial production.

A hydrogen gas sensor with a substrate and a zinc oxide nanostructured thin film deposited on the substrate, wherein the zinc oxide nanostructured thin film has a lattice structure with a weight ratio of low binding energy O2− ions to medium binding energy oxygen vacancies in a range of 0.1 to 1.0, and a method of fabricating a gas sensor by thermally oxidizing a metal thin film under low oxygen partial pressure. Various combinations of embodiments of the hydrogen gas sensor and the method of fabricating the gas sensor are provided.

The invention provides a method for manufacturing a terbium-dysprosium-iron giant magnetostrictive alloy based on three-dimensional photocuring molding, which comprises the following steps of: firstly, preparing three-dimensional photocuring molding slurry, adopting photosensitive resin as a matrix, and matching with a metal organic chelating agent containing terbium-dysprosium-iron giant magnetostrictive alloy component to enhance the uniform distribution of metal powder so as to ensure the printing precision and the material stability; secondly, the resin and the chelating agent are removed through heat treatment degreasing, the degreasing process is controlled by controlling the heating rate, and structural collapse is avoided; decarburization is carried out in a low-oxygen atmosphere, so that the purity of the alloy is improved, and the structural integrity before sintering is ensured; then reduction treatment is performed to improve the structural stability and purity; and finally, high-temperature sintering is carried out under the assistance of a magnetic field, grain orientation and magnetic domain arrangement are optimized, and the magnetostrictive effect and the force-magnetic energy conversion efficiency are improved. According to the method, three-dimensional light curing forming and magnetic field auxiliary heat treatment are combined, and the risk of structural damage in the printing process of the terbium dysprosium iron giant magnetostrictive alloy is practically and effectively avoided.

The invention provides a breeding method of hypoxia-resistant golden tiger hybrid spots, which comprises the following steps: carrying out artificial insemination on a female parent of epinephelus coioides and a male parent of epinephelus coioides to obtain fertilized eggs, carrying out 2.8-3.2 mg / L hypoxia screening on the female parent for more than three generations, and ensuring that the suffocation point is less than or equal to 0.9 mg / L. Performing staged low-oxygen incubation on the fertilized eggs, gradually reducing dissolved oxygen in an embryonic period, a protointestinal period and a membrane emergence period, performing specific sound wave stimulation in an opening period of larva fish, performing low-oxygen-resistant phenotype screening in a larva period, performing intermittent low-oxygen intensive training in a juvenile fish period, applying water flow stimulation before training, and performing low-oxygen-resistant phenotype screening in a membrane emergence period; during the period, a fortified feed containing gamma-aminobutyric acid, heme iron and other components is fed. According to the method, through multi-link collaborative innovation, the hypoxia resistance of the Jinhu hybrid spots is effectively improved, the survival rate of a target group under 2.5 mg / L dissolved oxygen reaches 93%, the suffocation point is reduced to 0.75 mg / L, meanwhile, gill filament development and growth are promoted, and an efficient technical scheme is provided for aquatic product breeding.

The invention discloses application of capsaicin to resistance of grass carp to hypoxia stress, and belongs to the technical field of agricultural cultivation. Aiming at the problems of red blood cell function damage, liver and gill tissue damage and the like of grass carps under hypoxia stress, a trace amount of capsaicin is added into the grass carp feed, so that the feed formula is optimized, the reduction of red blood cell quantity and brittleness increase of grass carps in the later growth period caused by hypoxia stress are relieved, liver damage is relieved, and the growth period of grass carps is prolonged. The death rate of the grass carp in a low-oxygen environment is reduced, the culture risk is reduced, and the method has the characteristics of being green, safe, low in cost and remarkable in economic benefit and is suitable for large-scale grass carp culture industry.

The invention relates to a shallow coal seam stope face oxygen concentration dynamic distribution model construction and real-time updating method, belongs to the technical field of coal mine safety monitoring, and aims to solve the technical problems that a traditional monitoring means cannot obtain an oxygen concentration space full view and a static model is difficult to track a dynamic mining environment. According to the technical scheme, at least four sensors are arranged on a coal face to form a gradient monitoring network, and oxygen concentration data of multiple positions are collected in real time; constructing an exponential decay function to characterize the distribution rule of the concentration along the tendency; solving an undetermined coefficient based on a nonlinear least square method with space-time constraint; and dynamically calculating a model updating period t through an environment complexity index ECI, and triggering model iteration. Working face oxygen concentration global dynamic sensing, low-oxygen risk area accurate early warning and ventilation decision intelligence are achieved, and the mine safety prevention and control capacity is remarkably improved.

The invention relates to the technical field of metal powder preparation, and discloses a high-zinc alloy powder preparation method and system.The method comprises the steps of raw material pretreatment and vacuum deep degassing, vacuum melting and active degassing, flow stabilization and diversion and gas-liquid synergistic atomization, solidification and collection under the protective atmosphere, and aftertreatment and packaging under the oxygen-free environment; the system is composed of a vacuum deep degassing unit, a vacuum melting and active degassing unit, a gas-liquid collaborative atomization unit, a powder collecting and cooling unit and an anaerobic operation and packaging unit. The high-quality zinc alloy powder which is low in oxygen content, high in sphericity degree and uniform in component can be stably prepared, and the method is suitable for being applied to the fields of additive manufacturing and thermal spraying.

The present invention belongs to the technical field of the treatment of solid waste. Disclosed is a method for preparing a CO-rich fuel gas on the basis of a gasification slag smoldering technique. The method is carried out in a smoldering reaction device. By combining a smoldering treatment technique with the processes of drying, dehydration, pyrolysis, gasification, oxidation, etc., of gasification slag and controlling corresponding reaction conditions, a CO-rich fuel gas with a low oxygen concentration can be ultimately prepared, thereby achieving the efficient utilization and harmless treatment of gasification slag. In the method for preparing a CO-rich fuel gas on the basis of a gasification slag smoldering technique in the present invention, the steps are simple, and the control involved therein is convenient and fast; by means of fully combining the smoldering treatment technique with the processes of drying, dehydration, pyrolysis, gasification, oxidation, etc., of the gasification slag, the efficient treatment of the gasification slag can be achieved, the CO-rich fuel gas with a low oxygen concentration is obtained, and combustible components in the gasification slag are fully recycled, thereby achieving the recycling of resources and adequately ensuring the availability of the recycled resources; and the method has very high economic value.

The invention discloses an autotrophic nitrogen removal and detoxification device and method for treating coking wastewater through two-stage low-oxygen short-cut nitrification, sulfur autotrophic denitrification and anaerobic ammonia oxidation, and belongs to the field of sewage treatment. The device comprises a water inlet tank, a sequencing batch reactor, a middle water tank and an up-flow anaerobic sludge blanket reactor. The method comprises the following steps: enabling the coking wastewater which is subjected to carbon capture and contains ammonia nitrogen and thiocyanate to enter a sequencing batch reactor, oxidizing the ammonia nitrogen into nitrite under a limited oxygen condition, and generating nitrogen, sulfate and ammonia nitrogen from the thiocyanate and the nitrite by autotrophic denitrifying bacteria; reaction effluent mixed with coking wastewater enters an upflow anaerobic sludge blanket, and anaerobic ammonium oxidation bacteria convert ammonia nitrogen and nitrite into nitrogen and generate a small amount of nitrate; and the residual nitrate, nitrite and thiocyanate are continuously and thoroughly removed through the sulfur autotrophic denitrification effect. The method provides a new idea for economical and efficient autotrophic nitrogen removal and detoxification of the coking wastewater containing thiocyanate and ammonia nitrogen.

The invention discloses a preparation method of low-oxygen-index surface needle-shaped high-specific-surface blue tungsten, which comprises the following steps: by taking ammonium paratungstate as a raw material, putting the raw material into a mechanically-sealed rotary calcining furnace with the furnace tube inner diameter of 400mm, and calcining at the calcining temperature of 580-620 DEG C in a first zone, 600-660 DEG C in a second zone and 600-640 DEG C in a third zone for 1-3 hours; the feeding frequency is 13-19 Hz, the furnace rotation frequency is 25-35 Hz, the negative pressure in the furnace is-400 + / -200 mm water column, the nitrogen flow is 0-4 M < 3 > / h, the low-oxygen-index surface-needle-shaped high-specific-surface blue tungsten is prepared, the oxygen index is 2.90-2.94, the surface of the low-oxygen-index surface-needle-shaped high-specific-surface blue tungsten is full of fine needle-shaped morphology, the specific surface area reaches 10-14 m < 2 > / g, and the low-oxygen-index surface-needle-shaped high-specific-surface blue tungsten can be used for preparing the high-specific-surface blue tungsten. The method is suitable for producing high-quality fine, superfine and nano-particle tungsten powder, tungsten carbide powder and corresponding hard alloy products.

The invention discloses a manganese-doped Ir-Ta oxide composite coating titanium anode and a preparation method thereof. The titanium anode comprises an insoluble titanium base material, an oxide middle layer and an oxide catalyst layer which are sequentially arranged, wherein the oxide catalyst layer is composed of an iridium (Ir) oxide, a tantalum (Ta) oxide and a doped manganese (Mn) element. The preparation method comprises the following steps: carrying out sand blasting and surface treatment on a titanium substrate to increase the roughness and binding force of the surface, then carrying out proper intermediate layer coating on the surface of the substrate, and finally preparing the manganese-doped Ir-Ta oxide composite coating on the surface of the intermediate layer. Compared with a traditional titanium anode, the prepared manganese-doped Ir-Ta oxide composite coating titanium anode has the advantages of being higher in reaction specific surface area, lower in oxygen evolution potential, longer in catalytic life and the like, and meanwhile the transition metal element manganese is higher in reserve, lower in price and high in oxygen evolution activity.

The preparation method comprises the steps that maraging steel raw materials are selected, and high-oxygen pure iron with the C / O mass ratio being 0.75-0.85 is adopted as the iron raw materials; smelting the maraging steel raw material by using a vacuum induction furnace, and pouring to obtain an electrode bar; and remelting the electrode bar by using vacuum arc to obtain the maraging steel cast ingot. The high-strength and high-toughness alloy material comprises the following components in percentage by mass: 17.0%-19.0% of Ni, 14.0%-16.5% of Co, 5.5%-7.5% of Mo, 1.0%-1.5% of Ti, 0.03%-0.08% of Al, less than 0.003% of C, less than 0.001% of N, less than 0.001% of O, less than 0.002% of P, less than 0.001% of S, less than 0.01% of Si, less than 0.01% of Mn, 0.0001%-0.01% of RE, 0.0001%-0.003% of B and the balance of Fe. The requirements of ultra-low carbon, ultra-low oxygen, ultra-low nitrogen and high purity of the ultra-pure maraging steel can be met, the smelting time of a vacuum induction furnace can be shortened, the efficiency is improved, and the ultra-pure maraging steel has extremely high application and popularization value.

The invention discloses a low-emission ultralow-oxygen burner, and belongs to the technical field of burners, the low-emission ultralow-oxygen burner comprises a circular bottom plate, the circular bottom plate is provided with a mixing assembly, a processing assembly and an auxiliary assembly, by arranging a stirring unit, airflow atomized and mixed by a Venturi tube in a mixing cavity can be disturbed, and the airflow can be uniformly mixed; the mixing uniformity of fuel and air is further improved, sufficient preparation is provided for follow-up combustion, through the series connection design of the first combustion chamber and the second combustion chamber, the fuel is sufficiently combusted twice, and the combustion efficiency is improved. Part of tail gas is re-introduced into the combustion process through the flue gas recirculation technology, the energy utilization rate is further improved, fuel consumption is reduced, the mixing assembly, the processing assembly and the auxiliary assembly are all arranged to be capable of being automatically unfolded, and therefore a mixing cavity and a combustion cavity can be rapidly unfolded to be cleaned, maintenance is convenient and fast, the service life of the device is prolonged, and the practicability is high. And meanwhile, the operation flexibility is improved.

The utility model discloses a garbage biogas gasification treatment device capable of generating electricity, which relates to the technical field of garbage treatment equipment and comprises a reaction chamber, two conductive parts and a resistor or an energy storage element, a low-oxygen or oxygen-free environment can be kept in the reaction chamber, and a liquid inlet, a liquid outlet, a gas outlet and two fixing ports are arranged on the reaction chamber; the two conductive parts respectively extend into the reaction chamber through the two fixing ports to form two electrodes; the resistor or the energy storage element is arranged outside the reaction chamber; the resistor or the energy storage element is electrically connected with the two conductive pieces and enables the two electrodes to respectively form an anode and a cathode. According to the device, a microbial fuel cell and an anaerobic fermentation process are integrated in one set of device, so that the microbial fuel cell and the anaerobic fermentation process are highly and effectively integrated, the removal rate of organic matters in garbage is high, the occupied space is small, the proportion of CH4 in biogas is high, and electric energy is generated.

The utility model belongs to the field of additive manufacturing, and relates to aeration type smoke dust treatment equipment which comprises a reaction cavity loaded with an inert and aeration equipment extending into the reaction cavity, the interior of the reaction cavity is in a low-oxygen or oxygen-free environment; the reaction cavity is provided with a smoke gas inlet, a smoke gas outlet, a material supplementing opening and a slag discharging opening which are communicated with the reaction cavity; metal smoke dust to be treated enters the reaction cavity through the smoke dust gas inlet and / or the aeration equipment and then directly impacts or is introduced into the inerts to be physically combined with the inerts, and the purified metal smoke dust is discharged through the gas outlet. The utility model provides the aeration type smoke dust treatment equipment which is high in safety degree and easy to operate.

The invention relates to the technical field of plateau medicine and intelligent medical equipment, and discloses a stepped deoxidation treatment system for plateau crowd hypoxia acclimatization time and application, and the system comprises a data acquisition module, an initial information input module, a central processing module and an oxygen flow regulation and control module. The system inputs individual genetic background and baseline physiological data of a patient, and acquires multi-modal physiological parameters and hypoxia-induced biomarkers in real time. The central processing module fuses multi-source information, constructs a multi-modal physiological load index, dynamically divides a habit stage by combining genetic information, and then inputs the multi-modal physiological load index and the habit stage into an adaptive optimization model to generate an oxygen flow regulation instruction. And the oxygen flow regulation and control module executes an instruction to control oxygen supply to form dynamic closed-loop feedback. According to the method, the personalized self-adaptive deoxidation path can be generated, and the efficiency and accuracy of hypoxia acclimatization are improved on the premise of guaranteeing safety.

The invention belongs to the field of powder metallurgy, and relates to a powder modification method for additive manufacturing, in particular to a method for reducing the oxygen content of powder by reducing the thickness of an oxide film on the surface of special steel powder prepared through gas atomization or plasma rotating electrode atomization for additive manufacturing and removing water vapor and inclusions attached to the surface of the powder at the same time. Atomized special steel powder to be modified is placed in a feeding device of jet mill equipment, high-pressure gas of nitrogen or argon is introduced into the jet mill equipment, the temperature of the high-pressure gas in a grinding cavity is controlled, the atomized special steel powder is subjected to high-speed airflow action, mutual collision and friction in the grinding cavity, and powder modification is achieved; the thickness of an oxidation film on the surface of the obtained jet mill modified special steel powder is obviously reduced; the inclusion content of the obtained jet mill modified special steel powder is remarkably reduced, and the sphericity degree of the powder is improved; water vapor on the surface of the obtained jet mill modified special steel powder is removed, and the oxygen content of the powder is reduced.