898 results about "Toxic gas" patented technology

The invention discloses an intelligent induction and early warning system for poisonous gas in a limited space, and relates to the technical field of gas induction and early warning. A three-dimensional structure model of the limited space is constructed, and non-uniform grid division is carried out based on barrier characteristics; multiple types of toxic gas sensing units are arranged in the grids, and gas concentration data are collected in real time; constructing a toxic gas three-dimensional cloud picture, and generating a dynamic weight field based on the concentration gradient; fusing operator positioning and trajectory prediction information, and establishing an individual risk exposure model; calculating a space-time intersection of the toxic gas cloud picture and the high-risk track area to form a fusion risk matrix; realizing linkage early warning control of a region level and an individual level through multi-level dynamic threshold judgment and thermal block clustering identification; the system can realize accurate perception and active response of the toxic gas gathering trend and personnel exposure risk in the complex limited space, has the technical advantages of high sensitivity, high intelligence and low false alarm, and is suitable for various limited space scenes such as chemical engineering, tunnels and mines.

The invention relates to the technical field of battery raw materials, in particular to a preparation method of lithium sulfide powder, the lithium sulfide powder and application, and the preparation method comprises the following steps: uniformly mixing lithium sulfate and a carbon source according to a preset proportion to obtain a first mixture; performing first heat treatment on the first mixture in inert gas to obtain a second mixture; and performing second heat treatment on the second mixture in reducing gas to obtain the lithium sulfide powder. The product obtained by the preparation method disclosed by the invention is the lithium sulfide powder, and the obtained lithium sulfide powder has the advantages of less oxygen and carbon impurities, higher purity and high reaction activity, and meets the synthesis requirements of the electrolyte; according to the preparation method, in the process of preparing lithium sulfide, toxic gas and organic solvent are not used, the reaction temperature is low, the energy consumption is low, the requirement on production equipment is low, the process is simple, the cost is low, harmful gas emission is avoided, safety and environment friendliness are achieved, and industrialization is easy to achieve.

The invention discloses a mine blasting safety monitoring and early warning system, which comprises a multi-source sensing module, an edge computing node, a dynamic risk assessment module, an intelligent early warning decision module and an emergency linkage execution module, and is characterized in that the multi-source sensing module acquires multi-dimensional data such as blasting vibration, shock waves and toxic gas through various sensors; edge computing nodes filter noise and extract time-frequency features; the dynamic risk assessment module inverts blasting energy based on vibration and shock wave data, and predicts secondary disasters in combination with a geological model and gas concentration; the intelligent early warning decision module dynamically adjusts an early warning threshold by using a deep learning model and fusing multi-modal data; the emergency linkage execution module executes instructions such as power failure and evacuation according to devices such as early warning level, linkage ventilation and personnel positioning, overcomes the defects of traditional single monitoring and lack of correlation models, realizes full-process and all-directional monitoring of blasting operation, and effectively improves the safety of mine blasting operation and the efficiency of emergency management.

The invention relates to the technical field of intelligent sensors, in particular to a workshop harmful gas abnormity monitoring method and system based on multi-modal data, and the method comprises the following steps: obtaining the multi-period concentration change of a node, recognizing the reverse direction, forming a bounce fragment, combining node behaviors according to the correlation of time and space, and constructing a diffusion path; and in combination with node toxicity residence and trend change and gas and time information at the convergence position, a workshop multi-modal toxicity anomaly monitoring result is obtained. According to the method, gas fluctuation characteristics are captured by recognizing the concentration change direction and the reversal amplitude, a behavior combination is constructed by combining time and space information, the linkage recognition capability between nodes is enhanced, a path sequence is constructed by depending on the trend direction and the node sequence to present a diffusion track, and extension and mutation nodes are extracted by superposing the residence state and the change trend. The dynamic monitoring range of toxic gas in multiple scenes is expanded, and correlation analysis of behavior traceability, path tracking and abnormal gathering areas is supported.

The invention relates to the technical field of gas monitoring, in particular to a toxic gas emission monitoring method and system for an electronic component workshop, and the method comprises the steps: constructing a hierarchical monitoring network in the electronic component workshop; the fixed monitoring nodes and the key area monitoring nodes are used for collecting poisonous gas concentration data and environment airflow velocity data of the positions where the fixed monitoring nodes and the key area monitoring nodes are located, meanwhile, the mobile inspection nodes are used for collecting poisonous gas concentration data and real-time space coordinate data on a moving track, and the data are packaged into a monitoring data packet to be transmitted to the central processing platform. Then preprocessing and standardization processing are carried out, a concentration distribution cloud picture of a workshop is dynamically generated based on standardized data, and when the concentration data exceed a preset concentration absolute value threshold value, traceability analysis is carried out to determine the position of a leakage source; and triggering trend early warning based on the concentration change trend, triggering grading alarm based on the concentration absolute value and / or the traceability analysis result, and performing rapid traceability and early warning on the toxic gas in the electronic component workshop.

The invention provides a granary safety intelligent early warning method and device, relates to the field of data processing and early warning, and solves the technical problems that the existing granary operation risk detection is not accurate enough, and the conditions of incomplete identification, false alarm or missing alarm are easy to occur. The method comprises the following steps: collecting multi-source time sequence data in a granary, and constructing environmental safety time sequence characteristics based on oxygen concentration time sequence data, toxic gas concentration time sequence data and smoke state time sequence data; based on the temperature and humidity time sequence data and the grain pile temperature time sequence data, risk trend time sequence characteristics are extracted; constructing a risk time sequence based on the environmental safety time sequence characteristics, the risk trend time sequence characteristics and the personnel access information time sequence data; carrying out fusion modeling on the risk sequential sequence through Transform, and identifying a risk level; and when the risk level reaches a preset threshold value, the system controls the bin gate access control to execute opening or closing operation, and synchronously triggers linkage early warning treatment. The method is used in the granary operation safety early warning process.

The invention relates to the technical field of toxic gas detection, and discloses a gas hazard prediction method fusing multi-sensor data, which comprises the following steps: step 1, collecting original environment data from various heterogeneous sensors in a target area; step 2, carrying out time alignment processing on the original environment data by adopting an improved dynamic time warping algorithm, so that multiple types of sensor data are aligned on a unified event timeline; and step 3, performing perception conflict detection based on the aligned data, judging whether the output of the plurality of groups of sensors has trend difference or not, when the difference exists, constructing a confrontation revenue function, and using each sensor as a strategy participant by using a game theory model. According to the technical scheme, the improved dynamic time warping algorithm is adopted to carry out event-level time alignment on multi-class heterogeneous sensor data, and the technical effect of realizing high-precision synchronous fusion of multi-source data in a gas rapid diffusion or sudden leakage scene is achieved.

The invention relates to the technical field of PU synthetic leather, and discloses flame-retardant PU synthetic leather, which comprises a base layer, a flame-retardant middle layer and a surface functional layer, the flame-retardant middle layer is prepared by mixing modified PU resin, a composite flame retardant, a synergist and a cross-linking agent, the composite flame retardant is prepared by compounding an organic phosphorus-nitrogen flame retardant and nano magnesium hydroxide according to a mass ratio of 3: 1-5: 1, and the surface functional layer is prepared by mixing modified PU resin, a composite flame retardant, a synergist and a cross-linking agent. The synergist is modified montmorillonite, the surface functional layer is a blend of fluorine-containing polyurethane resin and flame-retardant silicone oil, and the three-layer structure is integrally formed through a hot melting compounding process. The modified PU resin is prepared from polycarbonate diol, isophorone diisocyanate and a chain extender through a reaction. Three-dimensional flame-retardant protection from inside to outside can be achieved through the collaborative design of the base layer flame-retardant pretreatment layer, the flame-retardant middle layer and the surface functional layer, a finished product can reach a high flame-retardant grade, combustion spreading is effectively inhibited, release of smoke and toxic gas is reduced, and the problems that traditional PU synthetic leather is poor in flame retardance and prone to melting and dripping are solved.

The application discloses a kind of flame-retardant expandable polystyrene and its preparation method.It includes the following raw materials: styrene, nucleating agent, desalted water, organic compound containing peroxide functional group, inorganic salt, bromine flame retardant, dispersant, solvent.The product powder and bulk material prepared by the application are less, and the prepared polystyrene board has excellent mechanical properties.After one week or even one month, no collapse, deformation and other phenomena occur, the combustion performance completely reaches B level, and has efficient flame-retardant fireproof performance.Meanwhile, the product obtained by the application has high bromine content, good thermal stability, low bleeding, no toxicity, little influence on material mechanical properties, and no toxic gas such as polybrominated dibenzo-p-dioxin and polybrominated dibenzofuran is produced during thermal cracking or combustion, which completely meets the requirements of European dioxin regulations and does not harm the environment.

The invention relates to the technical field of solid-state battery production, in particular to a rubber frame, a rubber frame lamination integrated manufacturing system, a manufacturing method and a solid-state battery. The rubber frame comprises a rubber sheet and a composite sheet which are arranged in a stacked mode, the rubber sheet comprises a frame part and a sheet part located in the frame part, and an easy-to-tear structure is arranged between the frame part and the sheet part so that the sheet part can be torn down from the frame part. By prefabricating the adhesive frame, during use, the composite sheet is torn off from the frame part, the viscosity of the adhesive part in the composite sheet is transmitted to the frame part, the frame part is adhered to one side of the negative electrode sheet, the sheet part is positioned on the non-adhesive part and is basically non-adhesive, and an easy-to-tear structure is arranged between the frame part and the sheet part, so that the sheet part can be torn off, and the negative electrode sheet is not adhered to one side of the negative electrode sheet. And due to the prefabricated rubber frame, the situation that toxic gas is easily generated due to direct gluing and curing at the peripheral edge of the negative plate is avoided.

The invention discloses a poisonous gas leakage diffusion range simulation prediction method, relates to the technical field of electric digital data processing, and can solve the problems that prediction precision and real-time performance are difficult to consider when the poisonous gas leakage diffusion range is simulated and predicted at the present stage; the method comprises the following steps: acquiring gas diffusion related data of a gas leakage area; constructing a humidity intensity correction term according to the gas diffusion related data; wherein the humidity intensity correction item is used for correcting the influence of the air humidity on the diffusion concentration of the toxic gas; according to gas diffusion related data, constructing a water-gas intermiscibility correction term; wherein the water-gas intermiscibility correction item is used for correcting the influence of the water area on the diffusion concentration of the toxic gas; according to the humidity intensity correction item, the water-gas intermiscibility correction item and a preset gas diffusion model, simulation prediction is conducted on the leakage diffusion range of the toxic gas, and a diffusion prediction result of the toxic gas is obtained.

The invention relates to the technical field of concrete admixtures, in particular to a viscosity reduction type polycarboxylate superplasticizer and a preparation method thereof. The viscosity reduction type polycarboxylate superplasticizer is formed by polymerizing a comonomer under the action of an oxidizing agent, a reducing agent and a chain transfer agent, the comonomer comprises methoxyallyl polyoxyethylene ether, an air-entraining functional monomer, a viscosity-reducing functional monomer, a silicon-containing functional monomer, unsaturated acid and ferrous sulfate. The polycarboxylate superplasticizer provided by the invention can effectively reduce the viscosity of concrete, so that a concrete mixture has good flowability, workability and wrapping property, meanwhile, the strength of the concrete is not influenced as far as possible, the strength of the concrete is kept at a good level, and the concrete keeps good constructability. Moreover, when the viscosity-reducing polycarboxylate superplasticizer is prepared, the reaction can be completed at the normal pressure of 20-25 DEG C, the preparation steps are simple, the reaction condition is mild, no toxic gas is released, energy can be effectively saved, and the viscosity-reducing polycarboxylate superplasticizer meets the green building material standard.

The utility model discloses a direct sample injection gas chromatograph calibration device, which relates to the technical field of dilution gas distribution, and comprises a standard gas inlet and a diluted gas inlet, the standard gas inlet is sequentially connected with a first electromagnetic valve, a first proportional valve and a first gas flow sensor, and the diluted gas inlet is sequentially connected with a second electromagnetic valve, a second proportional valve and a second gas flow sensor. The diluted gas inlet is sequentially connected with a second electromagnetic valve, a second proportional valve and a second gas flow sensor, the outlet end of the first gas flow sensor and the outlet end of the second gas flow sensor are connected to the inlet end of the mixing chamber, and the outlet of the mixing chamber is connected with a gas pressure sensor, a proportional valve and an adjustable gas resistor. The components are connected in parallel to adjust gas pressure. The adjustable gas resistor is connected to a sample gas outlet and a chromatographic instrument sample introduction module, so that automatic dilution and constant-pressure sample introduction are realized. The device reduces errors of a traditional method and is particularly suitable for treating toxic gas. And standard gas can be continuously and stably output, full-automatic work of single-time gas inlet or multiple-time gas inlet according to a set program can be achieved, and the calibration efficiency is improved.

The invention discloses a powder gas leakage diffusion monitoring physical simulation system and method. According to the system, a plurality of gas energy control doors are sequentially installed in a simulation box body in the length direction; the dry powder aerosol generator, the smoke generator, the temperature generator, the humidity generator, the pressure controller and the toxic gas standard gas cylinder are connected with the head end of the simulation box body; the smoke exhaust fan is connected with the tail end of the simulation box body; the recycling and filtering device is connected with the smoke exhaust fan; the gas treatment tank is connected with the recycling and filtering device; the multi-parameter integrated detection unit is arranged in the cavity space of the simulation box body; the armored heating jacket is coated outside the simulation box body; the data processing platform is connected with the multi-parameter integrated detection unit; the method comprises the following steps: the system sets a simulation environment; simulating a leakage diffusion process; analyzing the spatial and temporal distribution condition of the multi-dimensional monitoring data to obtain a diffusion path and a concentration change trend of the leaked substance, and displaying a simulation result in real time. According to the system and the method, the powder gas leakage diffusion process under different environment parameter combination conditions can be simulated.

The invention relates to the technical field of gas detection and classification, and discloses a multi-component toxic gas detection and classification method and system for a stamping workshop. The method comprises the following steps: acquiring a multi-component toxic gas concentration data sequence of a plurality of detection points in a stamping workshop space, and screening a matched gas data segment matched with gas concentration distribution characteristics in a current detection period from historical toxic gas data. Then analyzing the concentration change of the matched gas data segment in time sequence, determining a concentration mutation point and calculating time delay, and comparing the change of the concentration gradient data sequence before and after the concentration mutation point with the change of the gas component data sequence to determine the component matching degree. And determining a spatial weight coefficient by combining the time delay, the component matching degree and the concentration distribution difference, carrying out weighted fusion on the component feature vectors through the coefficient to generate a feature vector set, finally inputting the feature vector set into a classifier, and outputting a multi-component toxic gas classification result.

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 discloses bamboo-based fire extinguishing gel as well as a preparation method and application thereof, and belongs to the technical field of macromolecular flame-retardant materials. The technical problem to be solved is to solve the problems of fire risk caused by vibration in the transportation process of the lithium ion battery and extremely high ignition speed, long combustion duration, extremely high combustion temperature, high re-combustion risk, generation of poisonous gases such as carbon monoxide and the like, serious harm to human health and the like caused by fire of the lithium ion battery. The invention provides the bamboo-based fire-extinguishing gel with dual purposes, and the bamboo-based fire-extinguishing gel not only has good damping performance and thermal responsiveness, has excellent adhesiveness and coverage after being liquefied, but also can absorb a large amount of heat and reduce the temperature, and has the advantages of efficient fire-extinguishing performance, environmental friendliness and the like. According to the technical scheme, the bamboo-based fire extinguishing gel is characterized by being prepared from water, bamboo powder, urea, glycerin, carrageenan and hydroxypropyl methyl cellulose.

The utility model relates to the technical field of collection devices, in particular to a collection device for a toxic gas alarm, which comprises a welding pipe, a collection control mechanism is arranged below the welding pipe, a barrier protection mechanism is arranged below the collection control mechanism, a gas inlet adjusting mechanism is arranged below the barrier protection mechanism, and a gas outlet adjusting mechanism is arranged below the gas inlet adjusting mechanism. When the collecting device for the poisonous gas alarm is used, the filter screen plate and the spring assembly are combined through the mechanism assembly, when the filter screen plate is seriously blocked, the filter screen plate can automatically move towards the side of the fan assembly under the influence of the negative pressure effect, and the spring can be extruded to be charged during movement; and then the fan assembly is closed, the spring rebounds to automatically drive the filter screen plate to reset, dust and impurities on the side edge of the filter screen plate can be vibrated down in the vibration process, and therefore the blockage clearing effect can be conveniently achieved in the working process, the overall structural design is ingenious, and the practical effect is good.

The invention provides a preparation method of an aerogel two-component foaming fireproof plugging material, and belongs to the technical field of computational chemistry, and the preparation method comprises the following steps: firstly preparing aerogel sol and loading a carbon monoxide catalyst and a flame retardant, and then preparing a component A (polyhydric alcohol, the catalyst, the flame retardant and a foaming agent) containing aerogel and a component B (polyisocyanate and aerogel) containing aerogel. Optimal process parameters are predicted through an aerogel structure optimization network model, and the two components are mixed according to the mass ratio of 1: 1-1: 1.5 for reaction and foaming forming. The foaming process follows a flame propagation inhibition kinetics, heat conduction barrier and aerogel porosity and heat insulation performance relation equation. And after the performance of the finished product is tested, the attention weight distribution of the network model is adjusted by using deviation data, so that online optimization and updating are realized, and the problem of collaboration of heat insulation and toxic gas inhibition of the fireproof plugging material is solved.

The application discloses a kind of recycling equipment and recycling method of waste lithium battery, its technical scheme: including discharge battery, clean water pool, conveying device connected in turn, crushing device, heating stirring device, first separating device, cooling stirring device, second separating device cloth bag dust collector and exhaust fan, discharge battery and clean water pool are connected, lithium battery is entered into crushing device by conveying device and carries out metal crushing, the present application realizes the recycling processing method and equipment of waste lithium battery, compared with traditional mechanical crushing manual screening, can significantly improve production efficiency, automatically and effectively separate the material of battery cell, improve the degree of resource utilization of waste lithium battery, eliminate the toxic gas contacted in traditional production process of manual screening.

The invention relates to the field of welding, in particular to an air conditioner connecting pipe silver-free brazing welding method based on a stainless steel pipe and a copper pipe, which comprises the following steps: firstly, removing an oxide layer of the copper pipe, determining the surface roughness, and determining a wetting parameter according to the surface roughness; arranging a camera to obtain a welding ripple image and calculating a fluctuation characterization value, and judging whether the unit welding process reaches the standard or not and determining the abnormal fluctuation frequency according to the fluctuation characterization value; according to the abnormal fluctuation frequency, whether the whole welding process reaches the standard or not and the reason for substandard are judged, and wetting parameters are adjusted; and then the welding process is checked, and if the welding process does not reach the standard, deoxidation layer treatment compensation is carried out. According to the method, through the technologies of quantifying correlation between the surface roughness and wetting parameters, judging abnormal fluctuation in a grading mode, monitoring ripples in real time, dynamically adjusting the parameters and the like, precious metal silver is abandoned, toxic gas is avoided, the environment-friendly requirement is met, and an efficient and stable scheme is provided for air conditioner connecting pipe manufacturing.

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.

To provide a flame-retardant polycarbonate resin composition which does not generate toxic fumes at the time of combustion, passes regulations for PFAS and the like, has environmentally friendly advanced flame retardancy, and has excellent mechanical properties. The flame-retardant polycarbonate resin composition is characterized by comprising, with respect to 100 mass parts of a polycarbonate (A), 0.1-1.0 mass parts of halloysite (B), and 0.01-5 mass parts of a non-phosphorus-based or non-halogen-based flame retardant (C).

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.