24results about How to "Solve corrosive" patented technology

The utility model provides a sintering flue gas dust removal device, which belongs to the technical field of sintering flue gas treatment and comprises a coarse dust removal device, a fine dust removal device and a flue gas emission device, the coarse dust removal device comprises a dust collection cover arranged above the pelletizing disc, a dust removal conveying pipeline connected with the dust collection cover and a spraying structure arranged in the dust removal conveying pipeline; the fine dust removal device comprises a shell, a folded plate dehydration device and a dehydrated flue gas retreatment device, and the folded plate dehydration device is arranged in the shell and is close to the flue gas slurry inlet end; the top end of the baffle is arranged at the top end of the interior of the shell, and the airflow uniform distribution plate, the water bath assembly and the tube bundle demister are sequentially arranged in a space formed by the baffle and the inner side wall, close to the dust removal flue gas discharging end, of the shell from bottom to top. By utilizing the device, the problems of bag pasting and corrosion when a bag-type dust remover is used for removing dust from sintering flue gas containing water vapor generated in a sintering and pelletizing process in the prior art can be solved.

This invention belongs to the field of acyclic compound technology, specifically relating to a method for preparing tert-amyl peroxide. A tert-amyl hydrogen peroxide aqueous solution is added to a solvent and stirred to obtain a mixed solution. Under stirring conditions, p-toluenesulfonic acid and ferric phosphide are added sequentially to the mixed solution. After the addition is complete, stirring continues to produce reaction solution I. Under stirring conditions, acetic anhydride is added to reaction solution I. After the addition is complete, stirring continues to produce reaction solution II. A washing solution is added to reaction solution II, and the mixture is stirred and washed, then separated to obtain crude tert-amyl peroxide. The crude tert-amyl peroxide is washed, dried, and the solvent is removed to obtain tert-amyl peroxide. This invention avoids the problems of large amounts of hydrochloric acid produced by traditional acyl chloride methods and the corrosiveness caused by using sulfuric acid as a catalyst. Furthermore, ferric phosphide is magnetic, allowing for recycling through magnetic separation after the reaction. p-Toluenesulfonic acid can be regenerated through ion exchange resin, significantly reducing production costs.

The invention relates to a method for detecting the content of aluminum and potassium in cesium-containing aluminum brazing flux, and belongs to the technical field of chemical detection and analysis. The detection method provided by the invention comprises the following steps: S1, adding water into a cesium-aluminum-containing brazing flux sample, uniformly mixing, then adding concentrated nitric acid with the volume of V1 and perchloric acid with the volume of V2, boiling to concentrate the total volume to V2, cooling, diluting, and filtering to obtain a to-be-detected solution; and S2, respectively analyzing the concentration of the aluminum element and the concentration of the potassium element in the to-be-detected liquid at the wavelength of 396.150-396.154 nm and the wavelength of 766.488-766.494 nm by adopting an inductively coupled plasma emission spectrometry to obtain the aluminum content and the potassium content in the cesium-containing aluminum soldering flux sample. The detection method provided by the invention solves the problems of instrument corrosion caused by high fluorine in the aluminum soldering flux, serious cesium matrix interference and low determination accuracy, and is high in accuracy, good in precision and high in sensitivity.

This application discloses a display panel and display device, relating to the field of display technology. It solves the problem that removing a portion of the organic layer in the non-display area exposes some signal lines in subsequent processing steps, preventing oxidation or corrosion of the exposed signal lines and improving the reliability of the display panel. The display panel includes: a substrate layer comprising a display area and a non-display area; a first metal layer disposed on one side of the substrate layer; a buffer insulating layer disposed on the side of the first metal layer away from the substrate layer; a pixel driving device disposed in the display area, located on the side of the buffer insulating layer away from the first metal layer; and a driving signal line disposed in the non-display area, located on the first metal layer, electrically connected to the pixel driving device. The orthographic projection of the driving signal line on the substrate layer falls into the orthographic projection of the buffer insulating layer on the substrate layer. The driving signal line is used to transmit display driving signals.

The invention relates to the technical field of fluid control and testing, and discloses a wide-area flow range multi-gas online mixing system and a control method thereof, and the wide-area flow range multi-gas online mixing system comprises a first gas path channel used for conveying basic fuel gas; the second gas path channel is used for conveying inert gas; and the third gas path channel is used for conveying high-activity additive gas. Through a large-flow metering branch, a small-flow metering branch and a low-flow-resistance straight-through branch which are connected in parallel in a first gas path channel, a second gas path channel and a third gas path channel, the purpose of adapting to large-span flow change including main and auxiliary gas switching from trace gas to large gas in each path is achieved; within a large-span gas internal combustion engine fuel low calorific value range and under the condition of different gas components and proportions, pressure backward flowing or main gas extrusion can be avoided through main pipeline switching, path control and different mixing port structures, and the mixing precision is ensured.

The application provides a germanium ingot refining device based on fluorinated salt assistance and reduction atmosphere coupling, and relates to the field of metal smelting, comprising a furnace body, a closed refining reaction cavity is formed in the furnace body, an upper reaction zone and a lower reaction zone are arranged in the furnace body; a reduction gas introduction joint is connected to the top of the furnace body and connected with an external gas supply system, and is used for introducing a reducing atmosphere into the lower reaction zone; a fluorinated salt feeding component is arranged on one side of the furnace body; a mixing mechanism is arranged in the middle of the furnace body; and an exhaust system is connected to the top of the furnace body. The application realizes that the fluorinated salt solution is uniformly sprayed in the form of atomization on the surface of GeO2 raw materials or molten germanium, and solves the problems of uneven addition of fluorinated salt, small contact area and low reaction efficiency in the prior art. The atomization spraying greatly increases the reaction interface, so that the fluorination reaction is more sufficient and fast, and then the stirring of the mixing mechanism is matched, so that the reaction rate is further improved.

The utility model discloses a device of quick binding ton bag, including fixed pipe, pivot structure, handle and locking portion, fixed pipe is used for penetrating ton bag bag mouth wire, pivot structure vertical penetration fixed pipe side wall and with handle articulates, be equipped with locking portion on handle. When operating, wire is penetrated into fixed pipe, and the handle is pressed down to drive locking portion and is fixed on the fixed pipe surface with wire pressure, forms three point formula mechanical lock solid, and tightens the wire and completes binding. The utility model discloses through fixed pipe guide wire that penetrates ton bag, cooperates handle and drives locking portion to form three point formula mechanical pressure, realizes single -action and completes binding operation. Through actual measurement, the time -consuming of binding is shortened to 20 seconds from original manual operation's 90 seconds above, and the obvious adaptation wet metallurgy high -frequency slag condition demand of requirement.

This invention provides a rotating feed platform system and its sealing method for high-temperature and high-corrosion environments. The system, located in an external furnace cavity, includes a graphite plate, a rotating graphite shaft, a rotating metal shaft, an inverted "convex"-shaped double-layer jacketed furnace cover, insulation felt, a labyrinth seal device, an air curtain seal device, a magnetohydrodynamic seal, and a drive component. The furnace cover is fitted onto the rotating metal shaft to form a cavity, within which the insulation felt, labyrinth seal device, and air curtain seal device are installed sequentially from top to bottom. This invention achieves decoupling of high-temperature load-bearing capacity and precision transmission through a segmented graphite-metal shaft; it uses gradient insulation formed by the cooling of the insulation felt and the furnace cover jacket to control the temperature of the sealing area to ≤60℃; and it achieves zero intrusion of corrosive gases through a three-stage series seal composed of a labyrinth seal, a reverse inert gas curtain, and a magnetohydrodynamic seal. Therefore, this invention effectively solves the technical problems existing in the prior art of rotating feed platform systems under high-temperature and high-corrosion environments.

The present application relates to the technical field of aluminum alloy production and processing, and particularly relates to an easily-extruded high-strength corrosion-resistant aluminum alloy, a manufacturing method thereof and an application thereof. The present application realizes the purpose of improving the material performance by using a higher Zn element while ensuring the corrosion resistance of the material by reasonably adjusting the proportion of Mg, Si and Zn elements. This method can not only improve the strength of the aluminum alloy, but also improve its corrosion resistance, thereby solving the problem of adding a large amount of alloy elements in the prior art, reducing the production cost and the difficulty of alloy element recovery. By controlling the alloy composition and the total aluminum content, the present application ensures that the extrusion deformation resistance of the aluminum alloy is small, has excellent extrudability, and controls the content of some elements to reduce the quenching sensitivity, so that the alloy can produce more complex thin-walled section shapes. The aluminum alloy material of the present application can still maintain good corrosion resistance in a high-humidity and high-salinity environment.

The application discloses a preparation method of adjustable hydrophobic aerogel particles, and steps are as follows: S1. mixing and stirring solvent, silicon source, deionized water and catalyst in proportion; S2. performing acid hydrolysis reaction under stirring condition, adding acid to adjust the pH of solution to 3-5, and hydrolyzing to obtain silica sol; S3. adding alkali adjusting solution to the silica sol to adjust the pH to 6-8, and obtaining SiO2 wet gel; S4. sequentially performing solvent exchange with ethanol, dichloromethane and deionized water, then, soaking the wet gel in a silane coupling agent solution, modifying at room temperature for 8 hours, and aging at a constant temperature of 20-60 DEG C for 12-48 hours; S5. soaking the hydrophobically modified wet gel in ethanol, curing, then feeding into a supercritical drying kettle for supercritical drying treatment, and drying for 2-10 hours to obtain hydrophobic aerogel particles. Through the synergistic effect of solvent regulation and surface modification, the precise regulation of hydrophobic performance is realized, and the process is simplified and the cost is reduced.

The invention provides an anchoring structure intelligent life prolonging method and system based on artificial current field reverse corrosion, and belongs to the technical field of rock mass anchoring protection.The anchoring structure is provided with a power module, a monitoring module and an electrode assembly, and the electrode assembly comprises a negative electrode, a weak positive electrode and a strong positive electrode; through double-anode layout, a weak anode is arranged in a hole to form a loop with a cathode by means of a seepage field, a replaceable strong anode is arranged outside the hole to replace corrosion of the weak anode, and an anchoring structure is used as the cathode for protection; a reverse corrosion system of an artificial current field is formed in an engineering area through the power supply module, a corrosion current field formed by an anchoring structure serving as a positive electrode and underground water in a natural state is broken, and the problem of corrosion caused by chemical action of the anchoring structure and corrosive ions in the underground water is solved; and finally, according to two indexes, namely the corrosion degree of the anchoring structure and the corrosive ion concentration, dynamically feeding back, correcting and regulating and controlling the current to realize intelligent anti-corrosion control so as to prolong the service life of the anchoring structure.

The invention relates to a fault diagnosis method for a circulating washing water pump based on wireless vibration waveform frequency spectrum monitoring, which solves the problems of difficulty in wiring and easiness in corrosion in a chemical field through LoRa wireless transmission and rigid installation of a sensor, and ensures the stability of signal acquisition. In addition, the method utilizes a frequency domain integral algorithm and fast Fourier transform to realize multi-dimensional spectrum analysis of vibration acceleration, speed and displacement, and overcomes the limitation of single index monitoring; meanwhile, in combination with characteristic frequency automatic labeling and fault judgment logic based on equipment parameters, accurate positioning and early warning of faults such as bearing abrasion and impeller abnormity are achieved, the operation and maintenance mode is converted into predictive maintenance from passive first-aid repair, and the risk of unplanned shutdown is effectively reduced.

The utility model relates to an electric lap joint structure and an inductor, and relates to the technical field of inductors, the electric lap joint structure comprises an aluminum core, a transition bar and a copper bar, the aluminum core comprises a vertical part and a straight part, the transition bar is arranged on the straight part of the aluminum core and is arranged between the straight part and the copper bar, and the transition bar is arranged between the vertical part and the copper bar. The aluminum core is electrically connected with the copper bar through the transition bar, and the aluminum core, the transition bar and the copper bar are fixed through bolts. The aluminum core and transition bar structure is used for replacing an all-copper inductor, aluminum serves as a material which is low in price and good in electric lead, and the production cost of the whole inductor can be reduced; the electric connection between the aluminum core and the copper bar adopts the transition bar for bridging, so that the direct contact between aluminum and copper is avoided, and the electrochemical corrosion is effectively avoided; and a bolt fixing mode is adopted, so that the complexity of a production process is reduced, the problem of material stress possibly caused by high-temperature welding can be avoided, and the reliability and stability of the inductor are further improved.

This invention discloses a near-zero emission system for producing syngas from natural gas, comprising a syngas conversion system, a syngas purification system, a syngas decarbonization system, and a tail gas recovery system. The invention first preheats and desulfurizes the raw natural gas, with the heat for preheating and desulfurization originating from the flue gas from the converter reaction. The crude syngas from the converter reaction is cooled and then purified in a CO2 absorption tower and a PSA purification and separation unit to obtain the syngas product. The CO2 absorption tower, CO2 stripping tower, and MDEA reboiler are interconnected to form a CO2 decarbonization system for recovering CO2 from the tail gas. This invention couples the desulfurization unit, denitrification unit, and heat exchange tubes within the flue gas duct, achieving both flue gas heat recovery and utilization, while also featuring a compact equipment structure and small footprint. By coupling and adjusting the process system, this invention achieves high efficiency, low energy consumption, and reduces the emission concentration of waste gas, reaching near-zero emissions and demonstrating high energy utilization efficiency.

The present application relates to the industrial waste gas treatment technical field, disclose the heat accumulation type thermal incinerator waste gas treatment material and preparation method thereof of anti silicon blockage, the material is made of kaolin, talc, calcined alumina matrix and pre-synthesized magnesium stabilized aluminum titanate clinker, monoclinic zirconium oxide, lithium feldspar modifier, the preparation method includes: the raw material is made into dry powder mixture, water ball milling pressure filtration is used to prepare mud cake, the plastic mud section is prepared by adding organic additives vacuum mud preparation; Extrusion molding is honeycomb green body with 10-13 cpsi of hole density and 1.4-1.6mm of wall thickness; Sintering at 1390-1410 DEG C, then quenching at 1100 DEG C to 700 DEG C interval control 5-8 DEG C / min rate. The present application uses the chemical inertia of monoclinic zirconium oxide to block silicon corrosion, and lithium feldspar promotes surface densification, combined with clinker and matrix thermal expansion mismatch and quenching process induced microcrack toughening, solves the problem of channel blockage and thermal shock cracking of heat accumulator under the working condition of waste gas containing silicon.

The invention discloses a multi-layer composite amorphous carbon coating of a metal bipolar plate and a preparation method of the multi-layer composite amorphous carbon coating, and particularly relates to the technical field of preparation of surface coatings of metal bipolar plates. The coating sequentially comprises an anchoring layer, an ion selective barrier layer and an amorphous carbon layer from inside to outside. The anchoring layer is preferably chromium nitride / chromium carbonitride with a gradient structure and is used for enhancing the binding force of the coating and a matrix; the ion selective barrier layer is preferably silicon-doped diamond-like carbon and is used for inhibiting metal ions from migrating to the surface; and the outermost amorphous carbon layer is diamond-like carbon with high sp3 content, so that excellent corrosion resistance and conductivity are provided. According to the preparation method, the transition layer is deposited by adopting a closed field unbalanced magnetron sputtering technology, and the barrier layer and the amorphous carbon layer are deposited by adopting a plasma enhanced chemical vapor deposition technology in sequence. The coating is clear in structural design, the preparation process is controllable, and the long-term durability of the metal bipolar plate in a severe environment of a fuel cell can be remarkably improved.

The invention provides a steel wire rope lubricating grease composition as well as a preparation method and application thereof, and belongs to the technical field of lubricating grease. The steel wire rope lubricating grease composition comprises the following components in percentage by mass: 30-60% of high-viscosity base oil, 10-35% of low-viscosity base oil, 1-10% of microcrystalline wax, 0.5-10% of a polymer, 1-5% of a softening point improver, 1-10% of a water repellent agent, 1-10% of a metal surface adhesive and 0.1-3% of an antirust agent. The dropping point of the steel wire rope lubricating grease composition reaches 110 DEG C or above, the low-temperature performance reaches-30 DEG C or below, and the steel wire rope lubricating grease composition has the advantages of excellent adhesion, corrosion resistance, heat and humidity resistance, long-term usability and the like, is suitable for protection and lubrication of steel wire ropes in environments with large temperature difference, high salt mist, high heat and humidity and strong corrosion, and has a very good industrial application prospect.

This application relates to the field of polymer composite materials technology, specifically to a salt spray resistant and mildew-resistant polyolefin material, its preparation method, and its application. The material mainly consists of a matrix resin, flame-retardant filler, crosslinking agent, silane coupling agent, anti-aging agent, and lubricant. The flame-retardant filler comprises aluminum hydroxide and benzimidazole-magnesium hybrid filler, compounded in a specific ratio. The preparation method includes: pre-activating the hybrid filler and silane coupling agent, then melt-blending and granulating them with other components. The resulting particles are then molded, crosslinked by electron beam irradiation, and annealed to obtain the final product. This invention, through the synergistic effect of its components, enables the material to simultaneously possess excellent salt spray corrosion resistance, mildew resistance, UV aging resistance, and long-term electrical stability, making it particularly suitable for products such as marine photovoltaic cable sheaths that require long-term use in harsh environments.

This utility model provides a protective device for anchor bolts and individual anchor bolts in underground roadways, relating to the field of roadway anchor bolt support technology. It includes a connecting nut, a fastening wire rope, and a limiter. The connecting nut connects to the lower end of an existing anchor bolt at the top of the underground roadway. A mounting base is provided at the bottom of the connecting nut, and a winding mechanism is located inside the mounting base. One end of the fastening wire rope is fixed to the winding mechanism, and the other end is equipped with a safety belt buckle. The connecting wire rope is connected to the safety belt buckle via a ring. The connecting nut, fastening wire rope, connecting wire rope, and limiter of this utility model can stably connect the anchor bolt body to the existing anchor bolt inside the roadway. The device has high adaptability; the length of the connecting wire rope connected to the winding mechanism can be adjusted by winding and unwinding, facilitating the connection of the anchor bolt body to anchor bolts at different distances. The device's pulling mechanism effectively prevents the anchor bolt body from tipping over.

The invention discloses a compressed air energy storage system which comprises an air treatment module, an air compression module, an air expansion module, an air storage module and a waste heat recovery module, all stages of air compressors of the air compression module are connected through a first heat exchanger, and an air inlet of the first-stage air compressor is connected with the output end of the air treatment module; air expansion machines of all stages of the air expansion module pair are connected through a second heat exchanger; the air compression module and the air expansion module are respectively connected with an air inlet and an air outlet of the air storage module; the input ends of the waste heat recovery module are connected with the output ends of the first heat exchangers and the output end of the last-stage air compressor, and the output end of the waste heat recovery module is connected with the input end of the air processing module. By means of the system, waste heat in the system can be fully recycled to achieve air dehumidification, corrosion of water vapor condensation to equipment and pipelines is prevented, long-term stable, efficient, safe and reliable operation of the system is achieved, and the maintenance cost is low.

The present application relates to a kind of nuclear reactor moderator elements, it includes shell and core block, wherein, core block is metal hydride moderator and is encapsulated in shell, shell is ceramic shell or metal shell and is made of sealingly connected shell and cover body.The present application also relates to the preparation method of the above-mentioned nuclear reactor moderator elements.According to the nuclear reactor moderator elements of the present application, the shell is prepared by additive manufacturing technology, and the densification of the moderator is realized by combining with heat treatment process, which solves the problems of easy oxidation and easy corrosion in the use of moderator, and meets the requirements of advanced nuclear reactor type for moderator.

The application discloses a kind of based on the G50 steel macrostructure hot acid etching detection method of multi-parameter optimization, belongs to metal material detection technical field.The method core is in through multi-parameter coordination accurate control, solve the problem of traditional method acid etching effect instability.Mainly include: using roughness tester quantification control sample surface roughness Ra≤1.6 μm;Hydrochloric acid aqueous solution with volume ratio of 1:1 is heated and constant temperature at 72±1 ℃;The sample is immersed in acid etching agent and accurately temperature 23±2 min;Later stage adopts suede brush in flowing warm water and washes to remove corrosion product completely.The application is through sample surface quality digitization monitoring, acid solution temperature intelligent adjustment, acid etching time accurate control and optimization post-processing process, effectively avoid under etching and over etching phenomenon, significantly improve the definition of G50 steel macrostructure defect display, the accuracy and repeatability of detection result, will detect accuracy rate be improved to 90% or more.The application is suitable for G50 steel raw material admission and forging billet metallurgical quality evaluation.

The invention discloses a preparation method of metal vanadium. The preparation method comprises the following steps: firstly, carrying out dehydration pretreatment on vanadium pentoxide under a vacuum condition; then carrying out electrolytic reduction for 2-4 hours in NaCl-KCl mixed molten salt at the temperature of 600-800 DEG C by taking dehydrated vanadium pentoxide as a cathode and graphite as an anode; cooling a product after the reaction, and separating and washing to obtain metal vanadium; and finally, annealing at 900-1000 DEG C in a hydrogen atmosphere for 1-3 hours for purification. According to the method, vanadium pentoxide is efficiently reduced at the relatively low temperature (700-800 DEG C), the production period is shortened, and energy consumption is reduced; a non-corrosive molten salt system is adopted, so that the problems of equipment corrosion and environmental pollution are solved; through the synergistic effect of molten salt electrolysis and hydrogen annealing, the purity gt is stably prepared; the metal vanadium powder with the purity of 99.9%, the single phase and the regular shape is obtained, and the product quality is high.

This utility model relates to the field of gas pipeline equipment technology and discloses a gas pipeline safety protection device, including an outdoor pipeline, a flange, a protective mechanism, and a fixing mechanism. The protective mechanism covers the outside of the flange and includes an upper shell and a lower shell that are rotatably connected. Both shells have locking blocks on their inner walls that fit the flange. The upper shell has a sliding stop with a groove on its inner wall. A lever drives the stop to block and close any gaps. The lower shell has a filling block that cooperates with the stop. The fixing mechanism includes a fixing ring fixed to the pipeline and an outer ring installed on a building. The outer ring has a radially sliding push rod and a spring damper. The push rod is inserted into the rod groove of the fixing ring. This utility model achieves efficient sealing protection at the flange through the sliding stop and the filling block, and provides elastic support and vibration reset for the pipeline through the spring damping structure, effectively preventing gas leakage and pipeline damage.