475 results about "Toxic gas" patented technology

The utility model provides a toxic gas detector control circuit capable of resisting electromagnetic interference, which comprises a power supply voltage regulation circuit, a temperature signal acquisition circuit, a sensor voltage regulation circuit, a sensor acquisition control circuit and a gas detector main control circuit which are in power supply connection. The gas detector main control circuit is in control connection with the 485 communication circuit, the acousto-optic prompt circuit, the LED state display circuit and the digital display screen, the gas detector main control circuit is in communication connection with the sensor acquisition control circuit, and the sensor acquisition control circuit is in control connection with the gas signal acquisition circuit and the temperature signal acquisition circuit. A TVS (Transient Voltage Suppressor) tube, a common mode inductor and a diode are arranged in the power supply voltage adjusting circuit; and a TVS tube and a diode are also arranged in the gas detector main control circuit. The poisonous gas detector has the beneficial effects that the anti-electromagnetic interference capability, the reliability and the stability of the poisonous gas detector when the poisonous gas detector is independently used are greatly improved.

The invention relates to the technical field of polymer composite materials, in particular to a cable polymer composite material for a wind turbine blade, which is prepared from the following raw materials in parts by weight: a polymer base material; a reinforcing material; a polymer modified material; a functional additive; a performance modifier; the functional additive is prepared from an anti-ultraviolet agent, an antioxidant, a silane coupling agent and nano titanium dioxide. According to the invention, the epoxy modified polyether-ether-ketone and bisphenol A epoxy resin compounded base material is matched with a continuous glass fiber, carbon fiber chopped strand and nano silicon nitride multi-element reinforcing system, so that the core short board of insufficient mechanical properties of the traditional material is thoroughly solved, and a magnesium hydroxide, aluminum hydroxide, expanded graphite and nano montmorillonite compounded flame-retardant system is also selected, so that the flame-retardant performance of the material is greatly improved. The flame-retardant cable material is high in flame retardance, free of toxic gas release, capable of meeting the environment-friendly requirement, capable of improving the material interface bonding force and long-term service reliability and capable of meeting the requirement for the service life of 20 years or above of wind power blade cables.

The invention belongs to the technical field of resource recycling of waste photovoltaic panels, and discloses a green metallurgical method for recycling high-purity silicon, silver and copper from waste photovoltaic panels, which comprises the following steps: (1) disassembling the photovoltaic panels to obtain laminated components, and crushing and screening to obtain light silicon powder and metal-enriched fine powder; (2) leaching the metal-enriched fine powder by using a citric acid-hydrogen peroxide mixed solution; (3) silver ingots are recycled through precipitation and electrolysis; (4) electrolyzing to obtain electrolytic copper; and (5) performing magnetic separation, alkali washing, acid washing, spark plasma sintering and direct-current electric field solidification purification on the silicon powder to obtain the high-purity silicon ingot. A leaching system composed of citric acid and hydrogen peroxide is adopted, so that the method has the advantages of no toxic gas emission, easiness in waste liquid treatment and low cost, and unification of efficient resource recovery and environmental protection is realized.

The present invention provides a battery module that manages the emission of toxic gases, utilizes an exhaust structure and gas filtration device to discharge gases in the event of thermal runaway inside the battery module, avoids the risk of explosion due to abnormal pressure or temperature increases, and optimizes the coolant circulation path to reduce fluid resistance. [Solution] A single-layer immersion-cooled battery module comprises a tank, a top lid, and a gas filtration device. Battery cells and a battery management circuit board are housed within the tank, which is filled with insulating coolant to immerse the battery cells and circuit board. A gas discharge passage and a depressurized superheat release device are provided between the tank and the top lid to control the pressure or temperature within the sealed space. The depressurized superheat release device automatically opens the gas discharge passage based on the pressure or temperature within the sealed space to discharge the generated gas. The gas filtration device is located above the top lid, covers the depressurized superheat release device, has a gas discharge opening, and filters and adsorbs the generated gas before discharging it.

The invention discloses a pig farm sewage treatment system and method, and belongs to the technical field of farm sewage treatment, the pig farm sewage treatment system sequentially comprises a water collecting tank, a dosing mixing tank, a solid-liquid separator, an adjusting tank, a HiRAD anaerobic device, a reaction sedimentation tank, a water quality adjusting tank, an SBR biochemical tank, a C-MBR biochemical tank, a disinfection tank and a reuse water tank; by means of the system and the method, sewage discharged by the pig farm through the liquid manure technology can be effectively purified, organic carbon in the sewage can be converted into methane to the maximum extent, the methane becomes a high-quality biomass resource, waste is turned into wealth, emission of toxic gas is avoided, it is guaranteed that the pig farm is clean and sanitary, and the economic benefits of the pig farm are improved. Infection and spreading of diseases are avoided; meanwhile, a large number of nutrient sources, such as nitrogen and phosphorus, in the sewage are converted into organic fertilizer; the purified wastewater is deeply cleaned, so that the recycling standard is met, and the cyclic utilization of resources is realized.

The invention provides a cable material as well as a preparation method and application thereof, and the cable material comprises the following components in parts by weight: 25-45 parts of polypropylene resin, 25-45 parts of elastomer, 80-100 parts of flame retardant, 1-3 parts of antioxidant and 1-2 parts of lubricant. The elastomer comprises any one or a combination of at least two of a styrene-butadiene-styrene block copolymer, an ethylene propylene diene monomer or an ethylene-vinyl acetate copolymer. The polypropylene resin and the elastomer are blended, so that the mechanical strength, the environmental adaptability and the aging resistance of the cable material are comprehensively improved while excellent electrical insulation performance of the cable material is maintained; the halogen-free flame retardant is added, so that the release of smoke and toxic gas is reduced, and an efficient and environment-friendly flame-retardant effect is realized.

The invention relates to the technical field of environmental monitoring and data processing, and discloses a chemical enterprise environmental data acquisition system based on a data transmission and processing technology, which comprises a sensing layer, a transmission layer, a platform layer and an application layer, and is characterized by comprising the following steps: S1, the sensing layer acquires environmental data in real time through a sensor and equipment; s2, the transmission layer safely and stably transmits the acquired data to a cloud or a local server; s3, the platform layer realizes data storage, decontamination, analysis and visualization; and S4, providing a visual and intelligent management tool by the application layer, and monitoring real-time data by using a large screen. According to the chemical enterprise environment data acquisition system based on the data transmission and processing technology, sensors are installed at key parts of an enterprise, so that the system can monitor key parameters such as toxic gas and air quality in real time, convert the data into digital signals and transmit the digital signals to a data center through a data line or a wireless network to be processed and analyzed.

The utility model relates to the technical field of poisonous gas emptying and purifying mechanisms, in particular to an emptying and purifying mechanism for poisonous gas exhausted by semiconductor equipment. According to the technical scheme, the device comprises a collecting box, a filtering layer is arranged in the collecting box, two screw rods are rotationally arranged between the inner walls of the front side and the rear side of the collecting box, and the outer ring of the middle end of each screw rod is in threaded connection with a cleaning brush. By arranging the filter layer to the first motor, collected gas can be preliminarily filtered, large-particle solid pollutants are removed, the follow-up purification process is prevented from being influenced, self-cleaning of the filter layer is facilitated, the phenomenon that the gas inlet effect and the filter effect are influenced due to blockage is prevented, and the catalytic effect is improved by arranging the catalytic box to the catalyst stirring paddle. The gas can be conveniently heated to a high temperature, harmful gas can be oxidized into harmless substances such as water and carbon dioxide under the action of a catalyst, the gas can be fully stirred through rotation of a catalyst stirring paddle, and the catalysis efficiency is improved.

The utility model discloses safe laboratory intelligent ventilation equipment, which relates to the technical field of ventilation equipment and comprises an operation table, a ventilation mechanism, an adsorption box, a first servo electric cylinder, an air guide barrel, an air suction opening, an air guide opening and a first corrugated pipe. The adsorption box in the ventilation mechanism provides an adsorption material in the ventilation mechanism, gas generated in an experiment can be effectively subjected to preliminary adsorption and purification treatment, the pressure of subsequent ventilation and purification treatment can be effectively relieved, the air suction opening in the bottom of the air guide barrel is used for carrying out air suction treatment on the gas generated in the experiment, and the air suction efficiency is improved. An air guide opening in the top of the air guide barrel is used for conveying air in the air guide barrel into the adsorption box, a first servo electric cylinder stretches out and draws back, the distance between an air suction opening and an operation table can be effectively adjusted, air suction treatment can be conducted on the air generated in the experiment process nearby and rapidly, and the experiment efficiency is improved. Rapid air suction and ventilation guide treatment on toxic gas or irritant gas generated in the experiment process can be effectively improved.

The utility model relates to a molecular sieve regeneration device for liquid nitrogen wash purified gas of a synthetic ammonia production device. In the device, a low-pressure nitrogen pipeline is connected with a molecular sieve adsorber, the bottom of the molecular sieve adsorber is connected with a nitrogen heater through a pipeline, and the nitrogen heater is connected to a phosphoric acid device hot blast stove through a fuel gas pipeline. The top of the molecular sieve adsorber is connected with the liquid nitrogen washing cold box. A track ball valve I is arranged on a connecting pipeline between the bottom of the molecular sieve adsorber and the nitrogen heater; and a regulating valve II is arranged on the nitrogen heater and the fuel gas pipeline. According to the utility model, high-concentration CO adsorbed by the molecular sieve is sent to the hot blast stove of the phosphoric acid device for combustion at the initial stage of the regeneration preheating stage of the liquid nitrogen wash molecular sieve, thereby improving the automatic control level of molecular sieve regeneration programs; the problem of fluctuation of a low first washing device during regeneration of the molecular sieve is effectively solved, the problem that a combustible poisonous gas detector gives an alarm due to direct emptying of high CO during regeneration is thoroughly solved, and part of energy is recycled.

The utility model discloses a carriage frame welding platform, which relates to the technical field of carriage processing and comprises a conveying table, a U-shaped frame arranged on the top surface of one side of the conveying table, a fixing component arranged in the U-shaped frame, a welding component arranged above one side in the U-shaped frame, and a cleaning component arranged above the other side in the U-shaped frame. The cleaning assembly is movably connected with the welding assembly through a connecting piece, a frame is arranged on the conveying table, a compartment is arranged above the frame, a compartment door is arranged on the rear side of the compartment, and a headstock is arranged on one side of the frame. In the welding process of a worker, poisonous gas can be sucked away at the position close to the welding position through the cleaning device, the situation that the poisonous gas drifts in air is effectively reduced, and therefore inhalation of the worker can be reduced; when the filter layer cannot effectively absorb toxic gas, the worker can replace the filter layer in time.

This application relates to the field of cable materials, specifically disclosing a low-smoke, low-halogen polyvinyl chloride (PVC) cable material and its preparation method. The material includes the following raw materials: polyvinyl chloride resin, EVM500 rubber, heat stabilizer, antioxidant, plasticizer, lubricant, filler, flame retardant, flame retardant synergist, and acrylate processing aids. The flame retardant includes a mixture of aluminum hydroxide and magnesium hydroxide, and the flame retardant synergist includes a zinc borate and ammonium octamolate-sepiolite composite. The preparation method includes the following steps: mixing the raw materials according to a specified ratio, then melting and mixing them, followed by granulation and extrusion molding to obtain the low-smoke, low-halogen PVC cable material. This application alleviates the problem of traditional PVC cable materials producing large amounts of black smoke and toxic gases during combustion, reduces smoke density, and improves the material's environmental performance and flame retardant properties.

1. The name of the design product: pipe valve (DN250). 2. The use of the design product: for controlling the opening and closing of the ventilation pipe of toxic gas. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The application discloses a kind of based on MXene / bimetallic phosphide / multi-polyphenol polymer multilevel flame-retardant photothermal material and preparation method, the material with nanosheet as base, by in-situ construction precursor and form bimetallic cobalt-nickel phosphide structure through phosphorization reaction, subsequently introduce tannic acid and dopamine on its surface, in-situ copolymerization is formed with the characteristics of multi-polyphenol photothermal layer of imitation mussel, to construct MXene / bimetallic phosphide / multi-polyphenol layer multilevel composite structure.The prepared photothermal material described in the application has excellent flame-retardant performance and photothermal conversion performance, can promote the formation of dense carbon layer during combustion, effectively inhibit heat release, smoke generation and toxic gas release;Under light condition, it can realize efficient photo-thermal conversion, and is used for preventing and removing ice in low-temperature environment.Adding the material as flame retardant to thermoplastic polyurethane can significantly improve the limiting oxygen index of the composite material and reduce the peak heat release rate.

The invention discloses a cable trench toxic gas detection method, system and device and a medium, and relates to the technical field of gas detection, and the method comprises the following steps: collecting data and forming a time sequence monitoring data set; inputting the time sequence monitoring data set into the prediction model to obtain a predicted gas concentration result; comparing the predicted gas concentration result with a corresponding safety reference parameter, and judging whether a toxic gas abnormal condition exists in the cable trench or not; when it is judged that the toxic gas is abnormal, triggering an inspection device to perform cooperative inspection on a target area in the cable trench; and performing fusion processing on the monitoring data set, the predicted gas concentration result and the inspection result to generate a cable trench toxic gas detection result. According to the method, a traditional passive alarm mode depending on a fixed threshold value is converted into an active early warning mode based on trend analysis, single-point detection is upgraded into a comprehensive judgment mechanism combining multi-point collaborative analysis and spatial modeling, and the timeliness of toxic gas leakage discovery, the accuracy of positioning and the reliability of disposal are improved.

The invention discloses a naphthoquinone-based gas sensitive material, a preparation method and application of the naphthoquinone-based gas sensitive material in an ammonia gas sensor, and belongs to the technical field of gas sensors. The material is composed of divalent metal ions such as copper, nickel and cobalt and a polysubstituted naphthoquinone organic ligand, forms a one-dimensional chain structure, has a high specific surface area, an ordered electron channel and excellent molecular recognition capability, and can detect toxic gases such as ammonia gas at room temperature with high sensitivity. Macroscopic preparation of the material can be realized through solvothermal one-step reaction. Compared with the prior art, the one-dimensional coordination structure and ligand site engineering synergistically improve the carrier transport and molecular recognition capability, can realize continuous, real-time and selective detection of ammonia gas under complex working conditions, and has the advantages of high yield, large-scale preparation and excellent device application prospect.

This utility model discloses an automatic sealing machine for pharmaceutical processing, relating to the field of pharmaceutical processing technology. It includes: a fixed mounting platform; an internal toothed conveyor belt on the inner side of the fixed mounting platform for stable lateral transport of the container; a movable support plate on the upper inner side of the fixed mounting platform; an electric telescopic rod below the movable support plate; a capping sealing machine installed at the lower end of the electric telescopic rod; and a sealing film connected to a take-up roller below the capping sealing machine. This invention addresses the technical problem that conventional sealing machines typically use a thermoplastic method, heating the opening of plastic bags filled with pharmaceuticals to achieve sealing. However, when dealing with bottled pharmaceuticals, the thermoplastic method causes the bottles to heat up and produce toxic gases. Furthermore, it is difficult to perform large-scale simultaneous operations, and sealing equipment for single bottles wastes time and reduces work efficiency.

The invention discloses modularized chemical waste gas treatment equipment for a semiconductor clean room, belongs to the field of waste gas treatment, and aims to solve the problems that in response efficiency, manual replacement needs a series of processes such as shutdown, equipment disassembly, filter screen replacement and sealing debugging, the operation is tedious, time consumption is long, and the time window far exceeds the waste gas switching time window, so that the process is forced to be interrupted, and the waste gas is wasted. The modularized chemical waste gas treatment equipment for the semiconductor clean room comprises a negative pressure machine, an exhaust pipe communicated with the upper part of the negative pressure machine and a gas inlet pipe communicated with one end of the negative pressure machine, and a highly toxic gas detoxification filter screen is arranged on the inner side, far away from the negative pressure machine, of the gas inlet pipe; waste gas components are analyzed in real time through the multi-component integrated gas sensor, and the controller drives the corresponding cylinders to accurately extend out of the corresponding special filter screens (such as highly toxic, acidic, alkaline and VOCs filter screens), so that full automation and on-demand treatment in the filtering process are realized, manpower is saved, and the response speed and the working efficiency of waste gas treatment are improved.

The utility model relates to the technical field of gas detectors, in particular to a toxic gas detector with a replaceable sensor, which comprises a detector, a connecting piece is fixedly mounted at the lower end of the detector, a frame is fixedly mounted at the bottom of the connecting piece, and a filter shell is fixedly mounted at the bottom of the frame. And a limiting plate is slidably connected into the frame body. According to the utility model, the threaded rod is loosened from the screw hole, so that a worker can rotate the adjusting screw rod to disengage the pressing strip from the positioning groove, and then the threaded rod is matched with the screw hole, so that the worker can use the adjusting screw rod to match the pressing strip with the through groove, and the worker can pull the pulling plate to take out the fixing plate from the interior of the frame body; the sensor can be conveniently replaced by a person through the assembling opening, the pulling plate can be stably embedded with the frame on the side face of the frame body through the cooperation of the clamping block and the clamping groove, and the stability and reliability of the sensor installed on the fixing plate are guaranteed.

The utility model relates to the technical field of flare systems, and provides a flare system for treating wet acid flare gas, which comprises a flare body, the flare body consists of a flare barrel and a flare head at the top of the flare barrel, and an incandescent light is arranged at the top of the flare head. The torch further comprises a conical guide cylinder, a gas guide assembly, a gas flow detector and an involute flow adjusting assembly, the conical guide cylinder is coaxially arranged in the torch head, the gas guide assembly is installed in the conical guide cylinder, the gas flow detector is fixedly installed in the torch cylinder, and the involute flow adjusting assembly is installed in the torch head. By means of the technical scheme, the problems that in the prior art, when flare gas is discharged in a low-flow mode or intermittently, the flare gas is difficult to fully burn, unburnt gas is gathered, and highly toxic gas leaks are solved.

This invention discloses a method for recovering rare earth elements from industrial solid waste fluorogypsum, belonging to the field of industrial solid waste treatment technology. The technical solution includes the following steps: 1) Pretreatment of solid waste fluorogypsum: fluorogypsum is screened, crushed, and then fed into a raw material tank; 2) Leaching of rare earth elements: ammonium sulfate solution is added to the raw material tank for soaking, followed by solid-liquid separation to obtain leachate and water-leached residue. The water-leached residue undergoes secondary solid-liquid separation to obtain waste residue and filtrate one; 3) Separation of precipitates containing rare earth elements: a precipitant is added to the leachate for reaction to obtain mixed slurry one. Mixed slurry one undergoes solid-liquid separation to obtain precipitates containing rare earth elements and filtrate two; 4) Filtrate recycling: filtrate one and filtrate two are mixed to obtain a mixed solution, which is then treated with water and recycled. This invention uses a milder ammonium sulfate solution to treat waste fluorogypsum fine powder, greatly saving production costs while avoiding toxic gas emissions and air pollution problems.

The utility model relates to the technical field of hazardous waste treatment, in particular to a hazardous waste treatment mechanism with a crushing function, which comprises a working box, the upper end of the working box is fixedly connected with a support frame, the middle of the upper end of the support frame is provided with a rectangular groove, the upper part of the support frame is inserted with a pressing mechanism, and the right end of the support frame is fixedly connected with a filtering mechanism. A rectangular frame is fixedly connected to the middle of the left end of the working box, a first motor is fixedly connected to the upper end of the rectangular frame, a conveying shaft is fixedly connected to the output end of the first motor, second motors are fixedly connected to the left portion and the right portion of the front end of the working box, and smashing shafts are fixedly connected to the output ends of the two second motors. And the upper portion of the front end of the working box is fixedly connected with an operation disc. According to the hazardous waste treatment mechanism with the crushing function, hazardous wastes can be extruded downwards, crushing is facilitated, leaked poison gas can be absorbed, and leakage of the poison gas is reduced.

The application discloses a resource treatment method of chlorine-containing organic wastewater, which comprises the following steps: mixing a calcium source, an aluminum source and an additive, and then calcining to obtain a calcium-aluminum multi-element compound; adding the calcium-aluminum multi-element compound into the chlorine-containing organic wastewater according to a solid-liquid mass ratio of (0.25-0.4):1, stirring and then standing to obtain a wastewater coagulation product; calcining the wastewater coagulation product to obtain a porous carbon loaded calcium-aluminum chlorine multi-element compound; and using the porous carbon loaded calcium-aluminum chlorine multi-element compound for removal of fluoride ions in fluorine-containing wastewater and / or degradation of carbonyl sulfur in gas. The self-made calcium-aluminum multi-element compound can coagulate the high-chlorine high-concentration organic wastewater in a low amount, and can convert the wastewater from a liquid phase into a solid phase, so that harmless treatment of the wastewater is achieved, and the solidification product can be converted into a high-value-added product for removing fluoride ions in water or hydrolyzing toxic gases in gas, and resource utilization is realized.

The invention discloses a dynamic hazard source identification and safety path generation method for a fire scene in the technical field of data processing for a prediction purpose, and relates to the technical field of data processing for the prediction purpose. Multi-source heterogeneous data is collected in real time through a multi-dimensional sensor network, and a multi-modal state snapshot is formed; immediately, a Bayesian network model trained by mass scenes accurately identifies a fire source event based on key features of the snapshot, and dynamically loads a matched dynamic control equation according to the fire source event; the dynamic control equation is positively solved by an embedded physical information neural network by taking real-time data as a boundary condition, a core dynamic vector containing a fire spreading speed and a poison gas generation speed is output, and a fire digital twinborn model coupled with a building information model is driven; the minute-level evolution process is compressed to the second-level evolution process through parallel computing to complete prediction, a high-precision three-dimensional risk map capable of accurately simulating a nonlinear and jumping diffusion mode under the influence of an obstacle is generated, and the prediction speed and accuracy are improved.

The application discloses an Al-doped two-dimensional MnO2 adsorption structure for SO2 immobilized adsorption and application thereof. The Al-doped two-dimensional MnO2 adsorption structure for SO2 immobilized adsorption comprises a two-dimensional MnO2 monolayer as a substrate, and Al modified atoms on H sites on the surface of the substrate, wherein the doping concentration of the Al modified atoms is 2% to 4%. A stable Al-O interaction interface is formed between the Al modified atoms and O atoms in SO2 molecules, so that a strong chemical adsorption interface dominated by ionic bond interaction is formed between SO2 and the adsorption structure; in a preferred configuration, the adsorption energy of the adsorption structure for SO2 is -2.154 eV, the interface charge transfer amount is -0.49 e, and the Al-O interaction distance is 1.737 Å. The adsorption structure can be used for irreversible capture, enrichment and immobilized adsorption of SO2, and industrial waste gas desulfurization and capture of toxic gas containing sulfur.

The utility model relates to the technical field of condenser equipment, and discloses an efficient heat exchange device of a condenser of a rectifying tower, which comprises a condensing shell, a plurality of spiral heat exchange pipes are assembled in the condensing shell, a steam inlet is arranged on one side of the top of the condensing shell, an exhaust pipe is arranged on the other side of the top of the condensing shell, and a steam outlet is arranged on the other side of the top of the condensing shell. A filtering assembly is mounted at the top of the exhaust pipe and is used for discharging and filtering non-condensable harmful gas; the filter assembly comprises an activated carbon filter cylinder and a mounting cylinder, and the activated carbon filter cylinder is located in the mounting cylinder. According to the heat exchanger, the design that the multiple layers of spiral coils are matched with the spoilers is adopted, the contact area of steam and cooling media is increased, and the heat exchange efficiency is improved. The special coating on the surface of the coil accelerates discharge of condensate, and heat exchange is prevented from being affected by accumulated liquid. And the temperature control device adjusts the cooling water flow in real time. And the filtering assembly can effectively remove non-condensable toxic gas.

The utility model relates to the technical field of biomedicine, and discloses a toxicological cell incubator which comprises a working panel and supporting legs fixedly mounted on two sides of the lower end of the working panel, firstly, a movable door is taken down, and culture cells are placed on a culture bracket; after placement is completed, the movable door can be inserted into the closed incubator along the connecting ring again, the air tightness of the device can be improved under the action of the rubber mat, the concentration of toxic gas in the incubator needs to be adjusted during toxicological experiments, the toxic gas can be filled into the device through the gas filling device, and then the toxic gas can be filled into the incubator. When the test is completed and the device is taken out, because the device is filled with toxic gas, the flowing direction of the gas can be switched through the adjusting assembly, and the toxic gas is guided into the filtering assembly, so that the gas is filtered and purified, and the toxicological cell culture box is relatively good in air tightness when being used; after the test, toxic gas used in the test can be conveniently filtered and purified, and the overall safety of the device is improved.