67results about How to "Highly corrosive" patented technology

The invention provides a carbon dioxide absorbent, an absorption method and a preparation method of the carbon dioxide absorbent, and belongs to the field of carbon capture. The carbon dioxide absorbent comprises 20% of a decarburization solvent and 80% of deionized water, and the decarburization solvent is composed of a main absorbent, an activating agent, an antioxidant and a defoaming agent; the main absorbent is 100 parts by mass, and 100 parts by mass of the main absorbent is composed of 65-85 parts by mass of ethanolamine and 15-35 parts by mass of N-methyldiethanolamine; 7 to 9 parts by mass of an activating agent and 0.4 to 0.8 part by mass of an antioxidant. The invention aims to solve the problem of poor carbon dioxide absorption effect of a carbon dioxide absorbent in the prior art. The technical effects of high carbon dioxide absorptivity, low corrosivity, weak oxidative degradability and the like are achieved.

The invention relates to the technical field of basalt concrete, in particular to basalt ultra-high performance concrete and a preparation method thereof, the preparation method comprises a raw material screening method and a preparation method, and the raw material screening comprises the steps of (1) selecting ultra-high performance concrete water, (2) selecting a cementing material, (3) selecting aggregate and (4) selecting fiber. The preparation method comprises the following steps: (1) the use amount of water should meet the design specification of the ultra-high performance concrete, and the water-binder ratio should be controlled within 0.25; and (2) according to the particle sizes of the cementing material and the sand, the dosage of each component is calculated on the basis of the closest packing theory, and the sand-cement ratio is controlled within 1.1-1.4. By adopting the method, in-situ utilization of the raw materials of the ultra-high-performance concrete can be realized in volcanic diagenetic regions, and design, preparation and application of the basalt ultra-high-performance concrete can be realized in practical engineering.

The invention discloses a synthesis method of an aryl bidentate phosphine compound, which comprises the following steps of: (1) reacting benzene or alkylbenzene with benzyl chloride or 4-alkyl benzyl chloride at 0-100 DEG C for 0.5-5 hours in the absence of oxygen and under the condition of a lewis acid catalyst to prepare a first intermediate; (2) dropwise adding an alkyl lithium reagent into tetramethylethylenediamine at the temperature of-30 to 40 DEG C under the conditions of no water, no oxygen and a solvent, stirring for 1 to 3 hours, dropwise adding the first intermediate into the mixed solution at normal temperature, and reacting for 4 to 20 hours at the temperature of-20 to 40 DEG C to prepare a second intermediate; and (3) under anhydrous and anaerobic conditions, adding diphenyl phosphine chloride into the second intermediate obtained in the step (2), and reacting at-20 to 80 DEG C for 5-60 hours to obtain the aryl bidentate phosphine compound. The synthesis method disclosed by the invention is simple in process, mild in condition and high in product yield, and has a relatively good industrial prospect.

The invention discloses a nitrogen fertilizer synergist and application thereof, and belongs to the technical field of fertilizers. The nitrogen fertilizer synergist comprises the following raw materials in percentage by mass: 15-40% of a nitrification inhibitor, 5-10% of butyl dihydrojasmonate, 1-5% of a soil loosening agent, 30-50% of a dispersing aid, 5-10% of an anti-caking agent, 0.1-5% of a trace element fertilizer and 0-5% of nutritional ingredients. According to the nitrogen fertilizer synergist disclosed by the invention, by adding the dihydro jasmonic acid butyl ester, the dispersity of the nitrogen fertilizer synergist can be improved, the fertilizer efficiency of the fertilizer is improved, the growth of plants is promoted, the stress resistance of the plants is improved, the nitrogen fertilizer synergist also has double functions of delaying nitrogen conversion and promoting nitrogen absorption, the utilization efficiency of nitrogen is further improved, and the nitrogen fertilizer synergist is relatively good in flowability and can be applied to the field of agricultural production. The nitrification inhibitor is stable in high-temperature and low-temperature environments, is convenient to use, can be directly used for particle spraying or adding of fertilizer, and solves the problem that nitrification inhibitors such as DMPP can only be used after being dissolved by special solvents.

The invention discloses a preparation method of a TCO film with good electroplate liquid corrosion resistance, which comprises the following steps: weighing ABCD powder according to the mass percentage, mixing the ABCD powder, grinding, carrying out compression molding, carrying out cold isostatic pressing molding, sintering in a high-temperature atmosphere and the like to obtain a target material, and carrying out sputtering coating by using the target material through a direct-current magnetron sputtering coating machine to obtain the TCO film. The TCO thin film prepared by the method has good electroplate liquid corrosion resistance, low resistivity and good conductivity, the sheet resistance of the thin film is only slightly increased and the transmittance is only slightly reduced after the thin film is soaked for 10 minutes, and the TCO thin film shows excellent electroplate liquid corrosion resistance, is used as an electrode material of a novel crystalline silicon heterojunction solar cell and has good application prospects. The TCO thin film electroplating copper electrode is used for replacing a traditional silk-screen printing silver paste electrode, complete silver removal is achieved, and the non-silicon cost of a heterojunction cell is reduced.

The invention belongs to the technical field of valve sealing element coating and plating processes, and discloses a special valve hard sealing element dissimilar material coating and plating process which comprises the following steps: S1, surface pretreatment; s2, coating of a bottom layer coating; s3, coating of an intermediate coating; s4, coating of a top layer coating; s5, quality detection and control; the surface pretreatment comprises cleaning, mechanical treatment, acid pickling and passivation, the coating of the bottom coating comprises nickel plating treatment and chromium plating treatment, the coating of the middle coating comprises ceramic coating and coating curing, and the coating of the top coating comprises tungsten carbide coating and coating heat treatment. The quality detection and control comprises coating thickness testing, adhesive force testing, corrosion resistance testing and wear resistance testing. According to the method, a compact and hard ceramic coating is formed through curing treatment, so that the high temperature resistance of the sealing element is improved, and the wear resistance and corrosion resistance of the sealing element are further enhanced.

A bionic rock-invading agent for silicate rock crushing and an auxiliary rock-breaking method thereof are provided, wherein an oxalic acid-sodium oxalate buffer solution OA is prepared, which comprises, by weight percentage, 0.6% to 1.1% of oxalic acid and 1.2% to 5.5% of sodium oxalate; a bionic neutral rock-invading agent ON is prepared, and the following four components, by weight percentage, are added to OA in a certain weight ratio: 0.05% to 0.3% of polyacrylamide, 1.0% to 3.1% of triethanolamine, and 0.3% to 5.5% of citric acid. 1.5%, trisodium nitrilotriacetic acid 2.0% to 5.0%, wherein the purity of polyacrylamide is ≥ 99.5%; the purity of triethanolamine is ≥ 99.5%; the purity of citric acid is ≥ 99.5%; the purity of trisodium nitrilotriacetic acid is ≥ 99.5%; during TBM excavation or oil drilling, the configured bionic rock-invading reagent is sprayed from the TBM cutter head to the face or pumped into the hollow of the drill string; thereby degrading the mechanical properties of the rock and achieving mechanical-chemical coupling rock breaking. The bionic rock-invading reagent of the present invention is neutral, has no obvious corrosiveness to mechanical rock-breaking tools, is environmentally friendly and efficient, and is particularly suitable for chemically assisted rock breaking of hard rocks such as silicate rocks.

The invention belongs to the technical field of powder coatings, and particularly relates to a high-wear-resistance and salt-fog-resistance epoxy powder coating and a preparation method thereof. The epoxy powder coating with high wear resistance and salt spray resistance is prepared from the following raw materials in parts by weight: 40 to 60 parts of modified epoxy resin, 15 to 30 parts of carboxyl-terminated polyester resin, 10 to 25 parts of fluorosilane modified composite filler, 10 to 25 parts of curing agent, 0.5 to 1 part of benzoin, 0 to 20 parts of pigment and 0.3 to 2 parts of other auxiliaries. The invention provides a high-wear-resistance and salt-fog-resistance epoxy powder coating and a preparation method thereof, which are used for solving the technical problems of poor hardness, weather resistance and salt fog resistance of the epoxy powder coating in the prior art.

The present invention relates to an etchant for corroding a nickel-based single crystal high temperature alloy, an etchant method, and a device for implementing the method. The etchant for corroding a nickel-based single crystal high temperature alloy of the present invention contains an H2O2 aqueous solution, an HCl aqueous solution, CuSO4·5H2O, FeCl3, trinitrophenol, and acetone. The present invention also provides a method for corroding a nickel-based single crystal high temperature alloy and a device for implementing the method, wherein the etchant of the present invention is used, and the device comprises a first container and a second container; wherein the first container is placed in the second container, the first container is used to load the etchant, and the second container is used to load the coolant. The etchant of the present invention has an excellent corrosion effect on the nickel-based single crystal high temperature alloy. The etchant of the present invention has high corrosion efficiency and low toxicity. Relying on the etchant method of the present invention and the device for implementing the method, the possibility of accidents can be reduced and the safety of workers or scientific researchers can be protected.

The invention relates to a secondary fluorination system for synthesizing PF3. The secondary fluorination system comprises a main reactor, a condenser pipe, a secondary fluorination reactor and a cold trap, the invention also discloses a secondary fluorination process for synthesizing PF3, which comprises the following steps: introducing gas-phase HF into a liquid-phase PC13 raw material to generate gas-phase main products PF3 and HCl and a small amount of by-product fluorine chloride, carrying out secondary fluorination reaction on the products through a fluorinating agent ZnF2, almost completely converting the by-products into the target product PF3, and collecting the final product in a cold trap. According to the invention, the content of by-products in the cold trap is greatly reduced, the conversion rate of raw materials is improved, and the purification efficiency of the crude phosphorus trifluoride is improved.

The utility model discloses a telegraph pole prefabricated foundation base special for a coastal mud flat area, and relates to the technical field of electric power equipment construction. The device comprises a cylindrical supporting base arranged in the vertical direction. A bracket used for being connected with a telegraph pole body is coaxially fixed to the upper end of the supporting base. The lower end of the telegraph pole body is correspondingly inserted into the bracket; the lower portion of the telegraph pole body is fixedly sleeved with a supporting flange. The supporting flange is connected with the bracket through a plurality of locking bolts; a through hole is formed in the middle of the bracket; an expanding and supporting mechanism is arranged in the supporting base; the expanding and supporting mechanism comprises a shaft seat fixed in the middle of the lower end of the supporting base; a gear control shaft is coaxially arranged in the supporting base; the lower end of the gear control shaft is correspondingly inserted into the shaft seat and rotates with the shaft seat; a limiting block is coaxially fixed to the upper end of the gear control shaft. The telegraph pole has the advantages that the stability of the telegraph pole installed in soft soil can be improved, the alkali resistance and corrosion resistance are high, and the service life is guaranteed.

The present invention discloses a seabed carbon sequestration equipment and method for deep-sea CO2 jet mining. It includes an intelligent monitoring system for a mining ship platform, a multi-pipeline suction device, an intelligent drive control mechanism, and a CO2 injection and sequestration device. The intelligent monitoring system for the mining ship platform includes a flow meter, a pressure sensor, and a control system. The multi-pipeline suction device is connected to a mining vehicle, and includes a CO2 inlet device, a suction pump, a filter device, and a CO2 storage tank. The suction pump is connected to the CO2 inlet device and the filter device; the multi-pipeline suction device is connected to the CO2 injection and sequestration device through a telescopic hose. The CO2 injection and sequestration device is connected to an intermediate cabin, and includes a CO2 transfer box, an emergency shut-off valve, a telescopic pipeline, a CO2 injection pipeline, and a drill bit. The present invention provides a complete set of equipment and methods for carbon capture, treatment, injection, and sequestration after CO2 jet mining, which ensures the fixation of the sediment sequestration position and realizes seabed mining and CO2 seabed sequestration.

The invention discloses a dexterous hand force tactile sensor structure, which belongs to the technical field of tactile perception of robot dexterous hands, and comprises a first force arm, a second force arm, a contact slide rail and a fiber grating sensor, distances between hinge points of the first force arm and the second force arm and same-direction ends of the first force arm and the second force arm are equal; one side of the first force arm and one side of the second force arm are slidably connected with the contact sliding rail and correspondingly connected with the two ends of the elastic element. The fiber grating sensor is connected with the other sides of the first force arm and the second force arm; according to the invention, the fiber grating is used as a core sensitive element, and the two ends of the fiber grating sensor are synchronously triggered by matching the two force arms which are arranged in a crossed manner with the contact slide rail, so that the problems of large size, poor durability, easy interference, poor precision and the like of a traditional electrical sensor in dexterous hand application are solved.

The invention discloses a modified polypropylene film and application thereof in a composite current collector. The modified polypropylene film comprises the following raw materials in parts by weight: 80 parts of polypropylene resin, 10-20 parts of linear low-density polyethylene, 10-15 parts of hyperbranched polypropylene, 20-30 parts of polyvinylidene fluoride resin, 1-3 parts of a compatibilizer, 5-8 parts of other auxiliary agents, 3-5 parts of 1,3-bis(oxiranylmethyl)-5-(2-propenyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, 1-3 parts of 1,1'-diaminoferrocene, 2-4 parts of 2,2'-bis(trifluoromethyl)diaminobiphenyl, 3-5 parts of (3,6-diaminoacridine-9-yl)boric acid, 0.8-1.2 parts of quaternary ammonium salt-based calix[3]carbazole and 10-15 parts of fillers. The film has excellent resistance to electrolyte corrosion, good heat resistance, good adhesion to the metal layer and flame retardancy, and sufficient puncture resistance.

The utility model relates to the technical field of buffer tanks, and discloses a black water buffer tank which comprises a buffer tank main body, a bolted switch cover plate is arranged on the side face of the buffer tank main body, and a flow guide pipe body is arranged at the top of the buffer tank main body. According to the utility model, the corrosion-resistant and compression-resistant gaskets are arranged on the two sides of the buffer tank main body, so that the bolted switch cover plate and the flow guide pipe body which are bolted on the two sides of the buffer tank main body can be tightly connected in a high-quality manner, the corrosion-resistant and sealing protection effects on connecting points are better, and the corrosion-resistant steel pipe is matched with the buffer tank main body, so that the double-layer corrosion-resistant and wear-resistant effects are achieved; the flow guide corrosion-resistant pipe and the flow guide pipe body achieve the double-layer corrosion-resistant effect, the top sealing ring achieves the bearing and sealing effect, liquid leakage or corrosion caused by connecting points is avoided, the corrosion-resistant sealing ring assists in achieving the sealing effect, and therefore the device is of a double-layer corrosion-resistant structure and is high in corrosion resistance and abrasion resistance, good in sealing performance and long in service life. And the operation stability and safety are high.

The utility model relates to the technical field of sampling valves, in particular to an anti-leakage convenient-to-puncture purging, sampling and discharging integrated sampling valve which comprises a sampling valve body, a sampling needle suite is detachably arranged at the lower end of the sampling valve body, the sampling needle suite comprises a clamping sleeve nut, a front clamping sleeve, a rear clamping sleeve and a sampling needle assembly, and the sampling needle assembly comprises a flow guide seat. A sampling needle and a purging needle are fixedly and hermetically connected to the bottom end of the flow guide seat, a flow guide hole is formed in the center of the top end of the flow guide seat and connected with a sampling inclined hole, the sampling inclined hole is connected with the sampling needle, a purging hole is formed in the side face of the flow guide seat and connected with the purging needle, and the flow guide seat is sleeved with the front clamping sleeve and the rear clamping sleeve. The clamping sleeve nut is in threaded connection with a sampling port in the lower end of the sampling valve body, and the bottom face of the inner side of the sampling nut makes contact with the bottom face of the rear clamping sleeve. The sampling needle provided by the utility model adopts all-metal sealing, so that leakage caused by aging or fracture of rubber is avoided.

The invention provides a method for preparing an etching-resistant Ni hard mask layer, and belongs to the technical field of micro-nano processing and thin films. The Ni film is prepared through a magnetron sputtering method, and the quality and performance of the Ni film are regulated and controlled by regulating and controlling key process parameters such as the Ar / H2 gas flow ratio, the sputtering air pressure, the substrate heating temperature and the sputtering power in the magnetron sputtering process. By the adoption of the method, the Ni film which is free of a columnar structure, smooth in surface, good in corrosion resistance, high in etching selection ratio and high in deposition rate is prepared.

The invention discloses a high-hardness corrosion-resistant iron-based amorphous alloy and a preparation method thereof, and belongs to the technical field of amorphous alloy materials. The iron-based amorphous alloy comprises the following components in percentage by mass: 20%-24% of Cr, 3%-7% of Mo, 3.6%-4.0% of B, 0.3%-0.7% of C, 1.0%-1.4% of Si, 1%-5% of Al, 1%-3% of Nb and the balance of Fe. The corrosion resistance is enhanced through the synergistic effect of Mo and Cr; b is a core amorphous forming element; c is used as a metalloid small atom, so that the amorphous forming ability of an alloy system is improved; si and B synergistically improve the amorphous forming ability and participate in formation of a Si-O passivation film at the same time; al optimizes the flowability of the alloy melt; nb is used as a large atom to improve the atom mismatch degree of a system and improve the amorphous forming ability; by accurately regulating and controlling the mass ratio of Fe, Cr, Mo, B, C, Si, Al and Nb, collaborative optimization of amorphous forming ability, hardness, corrosion resistance and forming stability is realized, meanwhile, the preparation process is simplified, and the production cost is reduced.

The invention provides an environment-friendly solar module and a solar power generation system, and relates to the technical field of solar energy, the environment-friendly solar module comprises a battery piece group, an interconnection strip, a bus bar, a front plate, a back plate, a frame and a junction box; the battery piece group comprises a plurality of polycrystalline silicon solar batteries, the polycrystalline silicon solar batteries are connected in series or in parallel through interconnection strips and bus bars, the front plate and the back plate are oppositely arranged, the battery piece group is mounted between the front plate and the back plate, the battery piece group, the front plate and the back plate form a module, and the frame is mounted at the edge of the module through an EVA foam tape. The junction box is installed on the back plate through an EVA foam tape, and the peripheral side of the frame is provided with an installation mechanism. According to the invention, the problem of poor comprehensive performance such as fatigue resistance and corrosion resistance of a back plate material of a traditional photovoltaic module can be solved, the service life of the photovoltaic module is greatly shortened, irritant gas generated by silica gel curing assembly is easy to cause a severe surrounding environment, and the disassembly and assembly efficiency of the photovoltaic module can be greatly reduced through the mounting mechanism.

The application discloses a method for preparing high-yield galacturonic acid by combining chemical and biological methods, which comprises the following steps: firstly, mixing gelidium and a maleic acid solution, and performing microwave heating and acidolysis to obtain D-galactose; and then taking engineered Pseudomonas putida as a biological catalyst to efficiently oxidize the D-galactose into galacturonic acid. In the application, the D-galactose obtained in the microwave heating and acidolysis step has high concentration and high yield, and the D-galactose can be completely oxidized into galacturonic acid in the subsequent biological catalysis step. The method does not need strong acid or special catalyst, is green and environment-friendly, has low raw material cost, simple process, high galacturonic acid yield, and realizes high-value development and utilization of the biomass gelidium.

The present application relates to the technical field of organic synthesis, in particular to a method for synthesizing 2,2'-dithiodi[N-butyl-benzamide] in water phase with ethyl acetate as additive. Sodium iodide and hydroiodic acid are used as key additives to synthesize 2,2'-dithiodi[N-butyl-benzamide], which has certain safety hazards. In view of the above problems, the present application provides a method for synthesizing 2,2'-dithiodi[N-butyl-benzamide] in water phase with ethyl acetate as additive, which is to use 2-butyl-1,2-benzisothiazoline-3-ketone as starting reaction material, sodium sulfide as reducing agent, and ethyl acetate as key additive to synthesize 2,2'-dithiodi[N-butyl-benzamide] in water under room temperature and closed condition. The method of the present application completely avoids the use of strong acid such as hydroiodic acid and sodium iodide. Moreover, the raw materials used are all conventional chemicals, the reaction system is mild, the operation process is safe and reliable, and it is suitable for large-scale production.

The utility model relates to an antique roof tile decoration system, which relates to the technical field of constructional engineering, and comprises a plurality of main keels arranged on a roof, a plurality of secondary keels are horizontally arranged on the main keels, a group of cylindrical tiles are arranged on each secondary keel, and each group of cylindrical tiles comprises a plurality of cylindrical tiles which are uniformly arranged along the length direction of the secondary keels; the plurality of cylindrical tiles in each group of cylindrical tiles are sequentially connected end to end, self-tapping screws connected with the secondary keels are arranged on the cylindrical tiles, a group of plate tiles are arranged between two adjacent groups of cylindrical tiles, and two ends of each plate tile are respectively connected with the cylindrical tiles. Through application and innovative design of aluminum alloy materials, the novel archaized tile roofing system is convenient to construct, reasonable in structure, vivid in visual effect and integrated with material advantages, can well solve many problems of a traditional archaized tile roofing system, and is an ideal novel archaized tile roofing tile decoration solution.

The invention discloses a method for leaching lithium in clay type lithium ore by utilizing recyclable solid acid, which belongs to the field of lithium leaching methods and comprises the following steps: step 1, pretreatment: firstly, crushing, grinding and roasting and activating the clay type lithium ore; step 2, leaching: mixing the pretreated minerals with a solid acid solution, and carrying out leaching reaction at set temperature and pressure; thirdly, solid-liquid separation is conducted, specifically, the acid leaching solution is put into a special centrifugal machine for solid-liquid separation, and acid leaching liquid is obtained; and step 4, purification: carrying out purification treatment on the lithium leachate, removing impurities, and finally cooling and crystallizing to obtain high-purity lithium. The method is scientific and reasonable, more sufficient solid-liquid separation of the acid leaching solution is realized by improving process abortion and using a special centrifugal machine, the subsequent lithium purification concentration is improved, and the problem of low lithium purity caused by low filtration degree of the acid leaching solution in a traditional method is solved.

The invention provides a refractory concrete and a preparation method thereof, belonging to the technical field of concrete; the preparation method comprises modified basalt fiber, modified granite powder, grafting and mixing steps; the step of modifying the granite powder comprises placing the granite powder in an ethanol solution, adding sorbitol dodecanoate and polyoxyethylene sorbitan monolaurate for stirring at a stirring temperature of 46-50 DEG C, adding threonine after stirring evenly, and performing ball milling treatment at a ball milling time of 26-30 min, a ball milling speed of 114-125 rpm, and a ball-to-material ratio of 3- 5:1, after the ball milling is completed, the modified granite powder is obtained by filtering and drying; the particle size of the granite powder is 135-145nm; the mass concentration of the ethanol solution is 45-50%; the mass ratio of the granite powder, ethanol solution, sorbitol dodecanoate, polyoxyethylene sorbitan monolaurate, and threonine is 8.3-8.7:90-97:1.0-1.2:1.1-1.5:4.5-4.9; the refractory concrete prepared by the present invention has high strength, excellent water permeability resistance, good high temperature corrosion resistance, and low linear shrinkage.

The utility model belongs to the technical field of cables, and discloses a cold-resistant cable protection sleeve. The cable comprises a cable body and comprises a thermal insulation layer arranged on the outer surface of the cable body, the thermal insulation layer comprises an aerogel pad, the aerogel pad is filled with nitrile rubber particles, and a corrosion-resistant layer is arranged on the outer surface of the aerogel pad. According to the invention, the thermal insulation layer is arranged, and the interior of the aerogel pad is coated with the nitrile rubber particles, so that the impact resistance of the cable body can be improved, and the interior of the cable is protected from being impacted by external factors, thereby preventing the cable from being deformed, and further preventing the normal use of the cable from being affected. And meanwhile, the aerogel pad has very low thermal conductivity and excellent thermal insulation performance, so that the thermal insulation performance in the cable body can be improved, and the purposes of thermal insulation and cold resistance of the cable body are achieved.

The utility model belongs to hot runner injection moulding technical field, especially is related to a single valve is with easy scald material special hot nozzle structure. The outer wall surface of hot nozzle body is equipped with heater, thermocouple, the hot nozzle body is equipped with valve needle in the flow channel hole of integral gate bar, the integral gate bar includes integrally formed first section body, second section body, the first section body is screwed in the hot nozzle cavity of hot nozzle body, the second section body is located outside the hot nozzle cavity, the second section body is equipped with the copper ring of heat dissipation. The second section body of integral gate bar adds beryllium copper heat dissipation copper ring, its copper ring radial surface II, copper ring axial locating surface II, copper ring radial surface III and mould plate closely cooperate and contact, form high -efficient heat dissipation channel, can quickly export the heat of the gate place gathered, make the gate place glue temperature rapidly drop to the moulding temperature of adaptation, fundamentally solve the gate scald problem of low temperature easy scald material, effectively reduce product defective rate, greatly improve product forming quality and consistency.

The application discloses a glass frit for a single-crystal silicon solar cell front paste, a paste, and a single-crystal silicon solar cell. The glass frit comprises 1-30 mol% of lithium oxide, 5-40 mol% of bismuth oxide, 5-40 mol% of lead oxide, 1-40 mol% of silicon oxide, and X, wherein X is any one or a mixture of several of copper oxide, cesium oxide, rubidium oxide, sodium oxide, potassium oxide, aluminum oxide, magnesium oxide, strontium oxide, tin oxide, zinc oxide, or tungsten oxide, and the molar content of any one of the oxides in X is 1-10 mol%, and the content of X is not more than 50 mol%. The conductive paste prepared by using the glass frit contains a lead-bismuth-silicon oxide glass system, the system has enhanced resistance to acetic acid attenuation, ensures a sintering window at a high-temperature fast-firing sintering temperature, and X has strong corrosiveness, so that a lower contact area can be obtained. The conductive paste has high resistance to acetic acid in a wide sintering window.

The present application relates to an array electrode intelligent sensing system for tunnel gushing water monitoring and a method thereof. The system comprises a flexible sensing array implanted inside or on the surface of a tunnel lining structure, an intelligent acquisition node and a data analysis platform. The flexible sensing array is composed of multiple composite sensing units arranged in a predetermined topological structure, each unit integrating a main electrode for measuring resistivity / potential, a temperature sensor for measuring temperature and a flexible strain sensor for measuring deformation; the intelligent acquisition node connects the sensing array to synchronously acquire resistivity, temperature and strain data in multiple channels, and preliminarily processes and extracts features from the original data; the data analysis platform receives data from multiple nodes, and through a multi-parameter spatio-temporal fusion analysis model, realizes the collaborative intelligent analysis from "water-bearing state perception" to "structure deterioration evaluation" to "gushing water risk early warning". The present application realizes the fine, three-dimensional and real-time monitoring of the incubation process of tunnel water disasters.

The utility model relates to the field of tail gas treatment, and discloses a tail gas condensation recovery treatment device which comprises a primary condensation device, a secondary condensation device, a spray tower, a liquid storage tank, a water pump and a compressor, the secondary condensation device is communicated with the primary condensation device and the spray tower through pipelines, and the compressor is communicated with the secondary condensation device. The spray tower is communicated with the liquid storage tank through a water pump, and an air leakage detection device is further arranged on the secondary condensing device. The tail gas recycling device has the following advantages and effects that methanol and hydrogen chloride in tail gas are recycled by utilizing the primary condensing device and the secondary condensing device, residual hydrogen chloride gas in the tail gas enters the spray tower along the pipeline, and then liquid in the liquid storage tank is pumped by the water pump to react with the residual hydrogen chloride in the tail gas; the tail gas grading treatment is realized, hydrogen chloride and methanol in the tail gas can be well recovered, and the pollution of the tail gas to the environment is reduced.

The invention belongs to the field of fine chemical engineering and environmental protection, and particularly relates to an organic electrolyte treatment method and device. Adding the organic electrolyte into an electrolyte treatment tank, stirring, then heating, enabling hydrogen fluoride in the organic electrolyte to enter a hydrofluoric acid storage tank through a water washing tower, continuously heating, carrying out reduced pressure distillation, enabling distilled gas to enter an organic matter storage tank through a second heat exchanger, stopping distillation when the liquid level in the organic matter storage tank does not change any more, and stopping heating of the electrolyte treatment tank. And keeping the pressure, adding alkali liquor into the remaining solid residues after distillation, stirring and neutralizing to obtain mixed liquor, and performing electrochemical treatment on the mixed liquor to obtain nickel and iron elementary substances. According to the method provided by the invention, the purified organic matters can be recycled, and the generated hydrogen fluoride is washed with water to obtain concentrated acid. In addition, solid residues left after distillation are neutralized by alkali liquor and subjected to electrochemical treatment, and metal elementary substances are obtained. And efficient utilization of resources and sustainable development of the environment are realized in the whole technological process.