1322 results about "Chlorine gas" patented technology

The invention discloses an atmospheric environmental pollution event emergency monitoring and early warning method and system, and belongs to the technical field of environmental management. The method comprises the following steps: acquiring multi-scale meteorological field data and chlorine concentration real-time data of at least five monitoring stations, extracting a wind field direction and a concentration change rate, and determining a position and a wind direction of a potential pollution hot spot area. The information is sent to the unmanned aerial vehicle, and the unmanned aerial vehicle automatically plans a path and collects supplementary concentration data from three angles. And fusing the monitoring data and the supplementary sampling data, and combining with a meteorological field input pollutant three-dimensional concentration distribution model to generate three-dimensional distribution data. And inputting the CALPUFF reverse model, and carrying out inversion to obtain the specific position and the emission intensity of the pollution source. According to the scheme, the accuracy and timeliness of source tracing of the pollution source are improved, high spatial resolution and flexible response capability are achieved, and efficient and intelligent technical support is provided for intelligent early warning, rapid source tracing and scientific response of sudden toxic gas leakage events.

The invention belongs to the crossing field of artificial intelligence and process control, particularly relates to an intelligent coupling control strategy for chlorine production through seawater electrolysis based on digital twinning, and aims to solve the problems of response lag, weak disturbance suppression and lack of electrode aging early warning in a traditional control method. According to the strategy, a high-fidelity digital twin fusing electrochemistry, fluid and thermodynamics is constructed, characteristics of current, temperature, impedance spectroscopy and the like are collected and fused at high frequency through a multi-source sensor, a state space model driven by a deep recurrent neural network is established, and current efficiency and electrode aging coupling evolution recognition is achieved; when salinization or flow mutation is detected, the twinborn body predicts and dynamically calibrates the current density and the voltage set value in advance, and the safety process window is synchronously scaled. According to the strategy, the chlorine gas yield fluctuation is reduced by 60%, the energy consumption standard deviation is reduced by 45%, the fault early warning is advanced by 2-5 hours, the fault-free operation time of the system is prolonged by 50%, and high-precision, self-adaptive and preventive intelligent control of the electrolysis process is realized.

The invention belongs to the technical field of energy storage materials, and particularly relates to a high-entropy oxide Fe0. 2Co0. 2Ni0. 2Cu0. 2Zn0. 2O and an ultrafast synthesis method and application thereof. According to the preparation method, ferroferric oxide, cobalt oxide, nickel oxide, copper oxide and zinc oxide with equal molar ratio are adopted as direct synthesis raw materials, toxic gases such as chlorine and nitrogen dioxide generated in the synthesis process of a metal salt precursor are avoided, and the uniformly distributed single-phase high-entropy oxide is synthesized in an ultrafast manner within 10 seconds by using a Joule heating technology; the synthesized high-entropy oxide is used as a lithium ion battery negative electrode material, and shows more excellent electrochemical performance and cycling stability compared with other high-entropy oxides prepared from transition metals with different proportions; in the preparation process, extra additives are not needed, operation is easy, the synthesis speed is high, the yield is high, element distribution is uniform, and the method has the advantages of being low in cost, high in efficiency and free of pollution and has the industrialization prospect.

The invention discloses a diamond film and a preparation method and application thereof, and the preparation method comprises the steps: taking a substrate material matched with the lattice constant of a diamond film material as a substrate, and carrying out the surface treatment of the substrate; mixed reaction gas comprising 80%-95% of hydrogen, 3%-8% of methane and 2%-12% of auxiliary gas is introduced, wherein the auxiliary gas comprises at least one of argon, chlorine, hydrogen fluoride and hydrogen chloride; carrying out controlled chemical vapor deposition at 850-1000 DEG C under the pressure of not less than 21 kPa, and growing a diamond film on the surface of the substrate; and annealing the diamond film. According to the method, chemical vapor deposition is controlled through cooperation of auxiliary gas and temperature-pressure gradient, and non-corrosion high-speed growth of the high-purity monocrystal diamond film is achieved; in combination with a dynamic annealing process, lattice defects are effectively repaired, the comprehensive performance is optimized, and the reliability of the thin film serving as a heat dissipation component and other applications is remarkably improved.

The invention discloses electronic-grade hafnium oxide and a preparation method and application thereof, and relates to the technical field of high-dielectric-constant materials, and the preparation method comprises the following steps: carrying out chlorination reaction on crushed coarse hafnium oxide and graphite powder to prepare coarse hafnium tetrachloride; purifying the crude hafnium tetrachloride by adopting a molten salt purification method and / or a hydrogenation purification method to prepare high-purity hafnium tetrachloride; the method comprises the following steps: introducing high-purity hafnium tetrachloride into a sublimation furnace, introducing oxygen and an AlCl3 gas-phase catalyst into the sublimation furnace, and oxidizing the high-purity hafnium tetrachloride into hafnium oxide particles and chlorine; and dechlorinating the hafnium oxide particles through a fluidized bed to obtain the electronic-grade hafnium oxide. The hafnium oxide prepared by the preparation method not only has electronic-grade ultra-high purity, but also overcomes various defects of synthesis by using hafnium tetrachloride water; and the technological process is simple, the production efficiency is high, and the production cost is low.

The utility model relates to the field of stirring for preparing sodium hypochlorite, and discloses stirring equipment for preparing sodium hypochlorite, which comprises a stirring tank, a stirring cover is arranged at the top of the stirring tank, a stirring assembly is arranged in the stirring tank, a cleaning assembly is arranged in the stirring tank, and the stirring assembly comprises a first connecting frame. The outer side of the first connecting frame is fixedly connected to the outer side of the stirring tank, a first rotating shaft is rotatably connected to the interior of the first connecting frame, a second belt wheel is fixedly connected to the outer side of the first rotating shaft, a square rod is slidably connected to the interior of the first rotating shaft, and a stirring rod is fixedly connected to the outer side of the square rod. According to the material mixing device disclosed by the utility model, through mutual cooperation of structures such as the motor, the rotating shaft, the rotating shaft I, the square rod, the stirring rod and the roller, effective coverage in the horizontal circumferential direction and the vertical direction is realized, and the uniformity and sufficiency of material mixing are greatly improved; the rapid and uniform mixing of chlorine and a sodium hydroxide solution in the sodium hypochlorite preparation process is facilitated.

The invention relates to a method for preparing high-purity quartz sand by burning organic silicon as a raw material, and belongs to the technical field of synthesis of quartz sand. The method comprises the following steps: introducing purified organic silicon into a combustor, and combusting to obtain nano silicon dioxide powder; then sintering is carried out to remove moisture, hydroxyl and carbon impurities on the surface of the powder, sintered silicon dioxide powder is obtained, and acid leaching and cleaning are carried out to remove metal impurities on the surface and in the powder; roasting the cleaned silicon dioxide powder in a chlorine atmosphere to remove moisture, hydroxyl and residual metal impurities; and carrying out high-temperature densification treatment on the roasted silicon dioxide powder, and then crushing, grinding and screening to obtain the high-purity quartz sand. The particle size of the prepared high-purity quartz sand ranges from 50 micrometers to 300 micrometers, the purity is larger than or equal to 99.999%, and the apparent density is larger than or equal to 2.1 g / cm < 3 >. The method breaks through the limitation of natural mineral purification, and provides a brand new path for large-scale production of high-added-value quartz sand.

The invention discloses a preparation method of low-carbon-content high-purity quartz sand, which comprises the following steps: carrying out alkaline hydrolysis and drying on organosilane to obtain alkaline xerogel, putting the alkaline xerogel into a quartz tube of a rotary tube furnace, starting the furnace body, adjusting the rotation rate, heating to a specific low temperature, and introducing nitrogen to replace air; introducing oxygen, controlling the pressure, carrying out oxidation reaction, relieving the pressure to normal pressure after the reaction, pumping and discharging the product, and repeating the oxidation and pumping steps for many times until the tail gas carbon dioxide reaches the standard; raising the temperature, introducing chlorine-containing gas for purification, finally raising the temperature to a sintering temperature, and sintering in an air atmosphere to obtain the low-carbon-content high-purity quartz sand. According to the preparation method, the energy consumption and the equipment cost of the carbon removal procedure are greatly reduced, the specific surface area and the densification performance of the subsequent high-purity quartz sand product can be guaranteed, and a technical path which is low in energy consumption, high in efficiency and capable of giving consideration to the product performance is provided for industrial preparation of the high-purity quartz sand through a sol-gel method.

The present invention relates to a process for producing molybdenum dioxide dichloride, which is a very efficient process that does not use hazardous chlorine gas and high reaction temperatures and enables the production of molybdenum dioxide dichloride in high yield without solvent.

The invention relates to the technical field of chemical gas, in particular to a chlorine leakage detection method and system in reaction kettle production. The method comprises the following steps: acquiring chlorine concentration values and wind field vectors of a plurality of positions around a reaction kettle at each moment; marking any moment as a target moment, and determining the gas diffusion contribution coefficient of each position to other positions at the target moment; determining a real gas diffusion contribution coefficient of each position to other positions at the target moment; determining the airflow correction density of each position at the target moment; and positioning a chlorine leakage source by using a density peak clustering algorithm based on the airflow correction densities of all positions at the target moment. According to the method, the wind field vector is introduced to construct the gas diffusion contribution coefficient to correct the density, the limitation of traditional static diffusion is overcome, the real leakage source and the concentration convergence point in the downwind direction are effectively distinguished, the accuracy and reliability of chlorine leakage source positioning are improved, and support is provided for safe emergency disposal.

The utility model discloses energy-saving closed electrochemical equipment for treating circulating cooling water. An integrated multi-gap plate-shaped scale scraping device is adopted for scale removal of the cathode of the equipment, so that the mechanical strength can be remarkably improved, a mutual supporting effect exists between the scale scraping device and the cathode, the scale scraping device is not prone to deformation, the clear distance between the adjacent cathode and anode can be shortened to about 5mm to the minimum, ohm voltage drop and energy consumption are remarkably reduced, and the size of the electrochemical equipment is greatly reduced; the lower surface of the integrated multi-gap plate-shaped scale scraping device is positioned below the water surface of a main water tank of the electrochemical equipment, so that the water tank can be effectively sealed, explosive or harmful substances such as hydrogen, oxygen and chlorine generated on a cathode and an anode are prevented from being diffused around the water tank, and the operation safety is remarkably improved.

The invention relates to the technical field of industrial process control, in particular to a chloroacetic acid production data storage method and system, and the method comprises the following steps: obtaining an initial temperature, reaction time and ratio, extracting a feeding batch and chlorine flow, sorting a parameter and batch correspondence table, judging the process consistency of adjacent batches, generating a grouping table, and establishing a channel label structure. Path level information is sorted, a stage path table is generated, data archiving is completed, and the numbering relation is registered. According to the method, accurate integration of batch data is realized through cross acquisition of multi-source parameters and time information association. And the process consistency identification accuracy is improved based on the dynamic judgment of the adjacent batch parameter floating range. The establishment of the channel affiliation relationship ensures that the data structure is clear, the path hierarchical mapping is combined with the operation state and the time label, and the staged data organization capability is enhanced. And the data arrangement efficiency and traceability are improved through automatic filing, and the constitutive property and collaboration of batch data management are integrally enhanced.

The invention discloses a continuous reaction device and method for producing 2-amino-4-methylbenzothiazole, and belongs to the technical field of compound production. The invention relates to a continuous reaction device for producing 2-amino-4-methylbenzothiazole, which comprises a first-stage reaction kettle and further comprises a stirring mechanism arranged in the first-stage reaction kettle and used for stirring chlorine and a mixed solution in the first-stage reaction kettle; the driving mechanism is arranged at the top of the first-stage reaction kettle and is used for driving the stirring mechanism to perform stirring action in the first-stage reaction kettle; the chlorine injection mechanism is connected with the stirring mechanism; the air exhaust mechanism is arranged at the top of the first-stage reaction kettle and is connected with the driving mechanism; the multistage reaction kettles are adopted for continuous operation to eliminate downtime, so that the problem of low production efficiency caused by repeated heating and cooling due to the use of intermittent reaction kettles in the traditional process is solved, the chlorine utilization rate is improved, and the production and processing cost is effectively reduced.

The invention provides a method for recycling valuable metal from germanium-antimony-tellurium alloy waste. The method comprises the three steps of surface treatment, chlorine reaction and compartment condensation and discharging. Oxidation films on the surfaces of the waste materials are removed through surface treatment, and the subsequent chlorine reaction efficiency is improved; then a self-made chlorination-step condensation integrated device is utilized, germanium, antimony and tellurium react with chlorine at the high temperature to generate gaseous chloride, step-by-step condensation separation is achieved through partition temperature control based on the boiling point difference of tellurium tetrachloride, antimony pentachloride and germanium tetrachloride, and target products are collected respectively; and finally, introducing inert gas to purge residual chlorine, and discharging safely. The method has the advantages of short process flow, no need of complex wet process steps and low equipment investment; metal chlorides are efficiently separated through the integrated device, and recovery is thorough; and the pyrogenic process is mainly adopted, no wastewater is generated, only tail gas is treated in a compliance manner, and the method is environment-friendly. Compared with a traditional wet process, the method has the remarkable advantages of high efficiency, low cost, environment friendliness and the like.

The invention relates to equipment for synthesizing chlorinated polyvinyl chloride and a synthesis method thereof, and belongs to the technical field of chemical synthesis equipment. Through the synergistic effect of the cavitation effect of ultrasonic waves and the photocatalytic reaction, the ultrasonic waves generate a large number of tiny bubbles in the working solution, on one hand, the tiny bubbles just enable pvc particles with lower density to float and overflow, and photocatalyst particles with higher density are kept at the bottom, so that self-separation of reactants and a catalyst is achieved, and the self-separation effect of the reactants and the photocatalyst is improved. On the other hand, the microbubbles quickly collapse in an extremely short time after floating to the surface of the reaction liquid, a cavitation effect is generated, dispersion of the photocatalyst in the reaction stock solution can be promoted, and the contact opportunity of the photocatalyst and reactants in the reaction stock solution is increased. A local high-temperature and high-pressure environment generated when the microbubbles are broken can enhance the activity of the photocatalytic reaction, and the synergistic effect of the microbubbles and photocatalysis can accelerate the photocatalytic reaction rate, promote the chlorination reaction of chlorine and pvc particles, and improve the chlorination rate.

The invention relates to the technical field of liquid chlorine gasification, and provides a liquid chlorine gasification system which comprises a first containing box, the first containing box is provided with a plurality of containing spaces, the containing spaces do not communicate with one another, and the containing spaces are used for containing first heat exchange media; the first pipeline is provided with a first inlet and a first outlet, the first inlet is communicated with the liquid chlorine storage tank, the first outlet is used for discharging chlorine, and the first pipeline sequentially penetrates through the containing spaces; the second pipeline is provided with a second inlet and a second outlet, the second pipeline sequentially penetrates through the multiple containing spaces, and the second pipeline is used for circulating a second heat exchange medium; the second inlet and the first outlet are located on the same side of the first containing box, and the second outlet and the first inlet are located on the same side of the first containing box. By means of the technical scheme, the technical problem that in the prior art, liquid chlorine in a coil pipe is rapidly gasified, and consequently pressure rises sharply is solved.

The present invention discloses a method for separating nickel and iron from a nickel-iron alloy by chlorination roasting: (1) placing the nickel-iron alloy in a roasting furnace; (2) introducing a gaseous chlorinating agent into the roasting furnace for staged roasting to obtain roasting slag and a roasting gas phase; wherein the gaseous chlorinating agent is a mixture of chlorine and gaseous ferric chloride; and (3) condensing the roasting gas phase obtained in step (2) in stages to obtain solid ferric chloride and liquid silicon tetrachloride, respectively. The present invention controls the composition of the chlorinating agent during the chlorination roasting process to achieve selective and directional volatilization of iron into the gas phase while preventing nickel from being chlorinated. Thus, nickel and iron in the nickel-iron alloy can be separated in a single step, and the process flow is short.

The invention provides a method for preparing a composite carbon-based slow-release fertilizer by synergistic modification of coal water slurry gasification slag and biomass, which comprises the following steps: step S1, crushing coal water slurry gasification slag, mixing with a chlorinating agent according to a certain mass ratio, reacting for a period of time at a certain temperature in a chlorine-containing gas atmosphere, filtering, and drying to obtain the composite carbon-based slow-release fertilizer. Removing heavy metals, washing with water, and drying to obtain detoxified gasified slag; s2, mixing the detoxified gasification slag with biomass powder, and roasting; s3, the roasted product is crushed after being subjected to acid pickling and functional additive strengthening, and the composite carbon-based fertilizer is obtained; the Pb / Cd / As residue of the fertilizer is less than or equal to 5ppm, namely the removal rate is greater than or equal to 96%, the specific surface area is 280-350m < 2 > / g, the hierarchical pore size distribution is realized,-OH is greater than or equal to 1.2 mmol / g, and-COOH is greater than or equal to 1.8 mmol / g; the 28d nitrogen and phosphorus accumulative release rate is less than or equal to 25%, the soil water retention rate is increased by more than or equal to 25%, the heavy metal exchange state is reduced by more than or equal to 60%, the preparation cost is about 780-820 yuan / t, the process is simple and controllable, and remarkable environmental protection and economic benefits are achieved.

The invention discloses an electronic waste efficient chlorination comprehensive recovery device and method, and relates to the technical field of chemical metallurgy, the electronic waste efficient chlorination comprehensive recovery device comprises a chlorination reaction cavity, a heating system, a vacuum system, an atmosphere control system and a condensation separation system; the heating system is used for controlling the temperature of the chlorination reaction cavity; the vacuum system is communicated with the heating system; the atmosphere control system comprises a chlorine gas source and a protective gas source; and the temperature of the condensation separation system is gradually reduced. Through the high-purity graphite heating assembly, the sealing structure and the atmosphere control system, the highest heating temperature is 1700 DEG C, the temperature limit of 1200 DEG C of a traditional quartz tube furnace can be broken through, the chlorine corrosion problem is solved, chlorine is not leaked, and the environment is not polluted. High-valued recovery of different metal resources can be achieved through low-temperature pyrolysis, high-temperature chlorination volatilization and three-stage condensation settling separation, and the method has the advantages of being low in energy consumption, high in recovery rate, environmentally friendly and the like and is suitable for industrial metal resource recovery.

The invention discloses a casing tubular reactor for preparing chlorine by oxidizing hydrogen chloride, which comprises a main body, and a lower seal head and an upper seal head which are respectively arranged at the bottom end and the top end of the main body, a casing reaction tube is arranged in the main body, and the casing reaction tube comprises a central tube and a jacket which is arranged on the outer wall of the central tube in a surrounding manner. A heating medium flows through the central pipe and the jacket, so that the heat exchange area is increased, and the heating medium is timely moved away from the reactor to take away heat generated by heat release of oxidation reaction, so that excessive concentration of bed reaction heat is avoided; and the obvious defect of traditional reaction equipment in the aspect of heat removal is overcome, the problems that the reaction efficiency is limited and the energy consumption is high are solved, and the reaction efficiency can be greatly improved. The invention also provides a system and a method for preparing chlorine by oxidizing hydrogen chloride, which realize recycling of reaction heat, reduction of energy consumption, recycling of tail gas discharged from an absorption tower after treatment, improvement of the utilization rate of raw materials, closed-loop operation of chlorine elements and reduction of the production cost.

The invention belongs to the technical field of preparation of organic chemicals, and particularly relates to trifluoropyruvic acid and a method for preparing trifluoropyruvic acid from trifluoroacetone. The method comprises the following steps: dissolving trifluoroacetone in a chlorinated solvent, adding a catalyst, introducing chlorine, carrying out a closed reaction, controlling the reaction temperature, cooling to room temperature after the reaction is finished to obtain a 1, 1, 1-trichlorotrifluoroacetone reaction mixture, adding an alkali liquor to carry out a hydrolysis reaction, separating out a water phase after the reaction is finished, and drying to obtain the trifluoropyruvic acid. And continuously applying the chlorination solvent, continuously adding the acid into the water phase to adjust the pH value to 3-4 to obtain a trifluoropyruvic acid water solution, finally extracting and pulping to obtain a wet trifluoropyruvic acid product, and purging with air to obtain a pure trifluoropyruvic acid product. According to the method for preparing trifluoropyruvic acid from trifluoroacetone, the raw materials are easy to obtain, the process is stable, the yield is high, the cost is low, and the invention further provides a trifluoropyruvic acid product.

The present application belongs to the technical field of rare metal metallurgy, and particularly relates to a method and device for removing arsenic in germanium tetrachloride by hydrogen peroxide oxidation. The arsenic removal device comprises GeCl4, H2O2 and HCl storage containers, the storage containers are connected with a first reactor and a second reactor through pipelines, fourth, fifth, sixth, seventh and eighth valves are arranged on the pipelines, a first constant temperature heater is arranged at the lower part of the first reactor, a first mechanical stirrer is arranged at the top of the first reactor, a first residual liquid collector is connected with the bottom of the first reactor through a pipeline, and ninth and eleventh valves are arranged between the first reactor and the first residual liquid collector. Compared with the traditional chlorine arsenic removal method, the present application uses hydrogen peroxide to remove arsenic in germanium tetrachloride, is more environmentally friendly, safe, low-cost and does not bring new impurity elements, and the arsenic removal effect is very significant.

The invention relates to the technical field of organic synthesis, in particular to a preparation method of erythritol sulfate. The preparation method of erythritol sulfate provided by the invention comprises the following two key steps: firstly, carrying out chlorination reaction on ethylene sulfate and chlorine under the catalysis of ultraviolet light to generate chloroethylene sulfate, and then carrying out dechlorination coupling reaction on the chloroethylene sulfate under the action of metal powder such as copper powder, zinc powder, iron powder and magnesium powder to obtain the erythritol sulfate. And the erythritol sulfate is prepared. Compared with the prior art, the novel method for preparing erythritol sulfate provided by the invention has the advantages that the use of sodium hypochlorite is avoided, and the generation of wastewater is reduced; moreover, the method provided by the invention has the advantages of mild reaction conditions, easily available raw materials and high reaction selectivity, the generation of byproducts can be effectively controlled in the reaction process, and the production efficiency and the product purity of the erythritol sulfate are remarkably improved.

The utility model relates to the technical field of exhaust and ventilation equipment, and discloses exhaust and ventilation equipment which is of a double-channel structure, a first exhaust pipe and a second exhaust pipe are arranged on the rear portion of an air suction guide pipe, and the first exhaust pipe and the second exhaust pipe are selectively communicated through a communication mechanism. The communicating cylinder base is driven by the driving motor to be rotationally installed in the sealing cylinder base, the air suction guide pipe can be independently communicated with the first exhaust pipe and the second exhaust pipe through rotation for channel switching, the structure is simple, work is reliable, discharged chlorine can be classified through channel switching according to the chlorine concentration change, and the chlorine treatment efficiency is improved. Unnecessary resource consumption is avoided, the chlorine treatment cost can be reduced while the working flexibility of the device is improved, the electric butterfly valve is arranged in the middle of the air suction guide pipe, the electric butterfly valve and the communicating mechanism are synchronously in a closed state after chlorine is exhausted, and the sealing protection performance in the working chamber can be effectively improved through double sealing.

The invention provides a preparation method of chlorinated paraffin 70 with a high softening point, and belongs to the technical field of chlorinated paraffins.The preparation method comprises the steps that S1, mixed wax is provided, and raw materials of the mixed wax are Fischer-Tropsch wax and petrochemical wax; s2, feeding the mixed wax into a reactor, then turning on an ultraviolet lamp in the reactor for irradiation, after liquid chlorine is gasified to form chlorine, feeding chlorine into the reactor, heating and carrying out segmented control reaction; s3, after the reaction is finished, blowing air into the reactor, then washing a reaction product with water, and then adding a compound stabilizer into a crude product obtained by washing with water, so as to obtain chlorinated paraffin 70; the chlorine content of the chlorinated paraffin 70 is not less than 69.5%, the softening point is not less than 98 DEG C, and the acid value is not more than 0.1 mgKOH / g. According to the method, hot chlorination and photo-initiation are combined, so that the chlorine content and the softening point of the product are controllable, the production efficiency is high, the reaction speed is high, the reaction temperature is reduced, the production period is shortened, and the product quality is stable.

The invention relates to the technical field of disinfectant generation, in particular to a hypochlorous acid disinfectant generation device based on a jet flow type phase interface reaction method, which comprises a bracket, and further comprises a mixing and pressurizing assembly, a mixing pipe mounted on the bracket, a discharging pipe arranged at one end of the mixing pipe, and a pressurizing pipe arranged at the other end of the mixing pipe, a second liquid adding pipe and a liquid outlet pipe are respectively arranged at the end part of the pressurizing pipe; the adjusting assembly comprises a detection pipe installed above the pressurizing pipe, gas in the liquid outlet pipe is detected through the detection pipe, an adjusting piece is arranged between the detection pipe and the second liquid adding pipe, and the flow speed of liquid in the second liquid adding pipe is adjusted through the adjusting piece according to the gas detected by the detection pipe. The adjusting assembly is arranged at the end of the pressurizing pipe, whether chlorine is generated in the liquid outlet pipe of the pressurizing pipe or not is monitored in real time, when chlorine appears, the liquid inlet amount of raw materials is adjusted in time, meanwhile, the position is cooled, meanwhile, the adjusting and detecting means both adopt power during liquid inlet of the raw materials, and more production cost is saved.

The invention provides a method for synthesizing monochloroethylene carbonate. The method provided by the invention is beneficial to improving the utilization rate of raw materials and the reaction efficiency. The method is carried out according to a first scheme or a second scheme, and the first scheme comprises the following steps: (1a) carbon tetrachloride is used as a solvent, chlorine and ethylene carbonate are subjected to a chlorination reaction, and the chlorination reaction is carried out under the condition that feed liquid in a chlorination kettle is in a boiling state; (2a) enabling a gas-phase material flow generated in the chlorination kettle to enter a rectifying tower to be in countercurrent contact with a carbon tetrachloride stream; the scheme II comprises the following steps: (1b) mixing ethylene carbonate and chlorine in a pre-reactor to carry out partial chlorination reaction; (2b) carrying out a chlorination reaction on the pre-reaction feed liquid and supplemented chlorine in a chlorination kettle in the presence of carbon tetrachloride, wherein the chlorination reaction is carried out under the condition that the feed liquid in the chlorination kettle is in a boiling state under a reduced pressure condition; and (3b) enabling a gas-phase material flow generated in the chlorination kettle to enter a rectifying tower to be in countercurrent contact with the carbon tetrachloride flow.

A production process of electronic grade molybdenum dichloride dioxide comprises the following steps: S1, pretreatment: contacting molybdenum trioxide with a dilute acid solution at a low temperature for pickling to remove alkaline impurities and soluble metal impurities adsorbed on the surface, and drying for later use after washing; s2, wet synthesis: in an inert gas atmosphere, reacting the molybdenum trioxide subjected to acid pickling in the step S1 with concentrated hydrochloric acid of which the mass is 4-5 times of that of the molybdenum trioxide at 80-100 DEG C, and after the reaction is finished, evaporating and concentrating in a high-temperature chlorine atmosphere to generate a crude product of dichloromolybdenum dioxide; s3, primary sublimation purification; s4, complexing and decomplexing purification; and S5, secondary sublimation purification: using a quartz sublimation tower to carry out vacuum sublimation on the secondary decomplexed molybdenum dichloride obtained in the step S34, and collecting sublimation condensate to obtain the electronic grade molybdenum dichloride. The final product purity of the production process is greater than or equal to 6N, and the process can be used for large-scale production.

The invention relates to the technical field of decontamination vehicles, and provides a chemical decontamination vehicle for chlorine leakage rescue disposal, the chemical decontamination vehicle comprises a frame and a carriage mounted at the top of the frame, a decontamination chamber is arranged on the front side in the carriage, a cleaning assembly for independently cleaning decontamination personnel is arranged in the decontamination chamber, a recovery cavity is arranged at the tail end of the carriage, and a control module is arranged in the recovery cavity. A high-pressure spraying assembly is arranged in the recycling cavity, lifting driving pieces used for driving the high-pressure spraying assembly to be lifted to the outer top of the compartment are arranged on the left cavity wall and the right cavity wall in the recycling cavity, and a water curtain forming mechanism matched with the high-pressure spraying assembly is arranged on the top of the compartment. Through organic combination of the water curtain barrier and the high-pressure jet decontamination, the comprehensive control capability on leakage areas of harmful gases such as chlorine is enhanced, the operation experience and the safety guarantee of decontamination personnel are optimized, the scientificity and the practicability of rescue treatment are greatly improved, and the method is suitable for popularization and application. And a more efficient and reliable technical means is provided for chemical leakage emergency response, and the method has remarkable popularization and application values.

The invention relates to the field of hydrazine hydrate, in particular to an efficient and green hydrazine hydrate synthesis method. The efficient and green hydrazine hydrate synthesis method comprises the following steps: mixing chlorine, sodium hydroxide and water, and reacting to obtain a sodium hypochlorite solution; the method comprises the following steps: mixing a sodium hypochlorite solution, urea and a catalyst, and reacting to obtain hydrazine hydrate, tail gas and a byproduct; and tail gas and by-products are recovered. Through mechanism-driven process design, high efficiency, greenization and economy of hydrazine hydrate synthesis are realized, and a sustainable solution is provided for industrial application.