1847 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 discloses a p-methyl benzyl chloride production process and a production system thereof, p-xylene side chains and chlorine are subjected to a gas phase substitution reaction under micro negative pressure and visible light catalysis to generate crude methyl benzyl chloride and hydrogen chloride, and 99.0% methyl benzyl chloride, a small amount of benzyl dichloride and 31% hydrochloric acid are respectively generated through rectification and absorption; the device consists of four working sections of chlorination, rectification, hydrochloric acid absorption and distillation. According to the method, the defects in the prior art are overcome, on one hand, chlorine is introduced, and an aromatic ring chlorination reaction is carried out under visible light catalysis; on one hand, a supported catalyst filler is arranged at the bottom of a chlorination tower, and a zeolite molecular sieve modified by long-chain alkylsilane and supported by metal salt is used as a catalyst to catalyze chloromethylation reaction, on the other hand, the hydrophobicity of the modified catalyst is obviously enhanced, and meanwhile, the density of acidic sites is not reduced; the contact opportunity of the catalyst and a reaction substrate is greatly increased, and the catalytic efficiency of the catalyst is improved.

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 provides a preparation method of an acid-resistant and chlorine-corrosion-resistant porous composite electrode and a device constructed on the basis of the electrode and used for preparing hydrogen and chlorine by electrolyzing a sodium chloride solution, two cavities are provided, an acid or neutral saturated sodium chloride solution is filled in the cavities, the cavities are separated by a proton exchange membrane or a diaphragm, and the proton exchange membrane or the diaphragm is filled in the cavities. And in the electrolysis process, the cathode generates high-purity hydrogen, the anode generates high-purity chlorine, the chlorine is absorbed by sodium hydroxide in the gas collection bottle and generates sodium hypochlorite, or the chlorine is introduced into a sodium bromide / sodium iodide solution to replace bromine / iodine elementary substances, and the chlorine is discharged from the gas collection bottle. The sodium hypochlorite solution and the bromine / iodine water are used for disinfection and sterilization experiments. The corrosion-resistant porous composite electrode for electrolysis of an acidic or neutral saturated sodium chloride solution is prepared, the electrolysis voltage of the corrosion-resistant porous composite electrode is further reduced by loading a cathode / anode catalyst, and an acidic or neutral saturated sodium chloride solution electrolysis device constructed based on the electrode can be used for preparing high-purity hydrogen and chlorine.

The invention discloses a plastic floor base material prepared from recycled PET, and relates to the technical field of floors, the base material is prepared by mixing a recycled PET material, stone powder, a chain extender, stearic acid, an oil body and an elastomer, the recycled PET material accounts for 15%-25%, the stone powder accounts for 65%-78%, the chain extender accounts for 0.4%-1%, the stearic acid accounts for 0.5%-2%, and the oil body accounts for 1%-3%. According to the present invention, the recycled PET is adopted as the adhesive to adhere the stone powder, and extrusion molding is performed through the extruder to prepare the plastic floor base material, such that the GRS and SCS certified products can be easily obtained, the PET product cannot be decomposed into the chlorine gas and the hydrogen chloride with the pungent odor like the conventional PVC plastic floor base material, and the recovered PET material has the more sources, such that the production cost is low, and the production efficiency is high. And the market is wider.

The invention relates to a single crystal diamond and a preparation method and application thereof. The preparation method comprises the following steps: performing etching treatment on a diamond seed crystal; then introducing a carbon source, hydrogen and chlorine, and carrying out deposition growth of the monocrystal diamond; after deposition growth is finished, post-treatment is conducted, and the single crystal diamond is obtained. Chlorine and hydrogen are introduced in the chemical vapor deposition process at the same time, selective growth of a diamond phase can be promoted, chlorine can help to reduce formation of non-diamond carbon (such as graphite), and therefore the quality and the growth speed of diamond single crystals are improved, and the dislocation density is reduced.

The invention discloses a zero-emission combined treatment method and device for high-salinity wastewater and circulating water, and relates to the field of water treatment.The method comprises the steps that 1, the circulating water and the high-salinity wastewater in a water collecting tank of an open cooling tower enter a diaphragm electrolytic cell for electrochemical softening treatment; (2) carrying out carbon dioxide micro-nano bubble treatment on water discharged from the cathode chamber, then carrying out sedimentation treatment, and returning the treated water to the open cooling tower water collecting tank; (3) monitoring the water quality of the circulating water and the high-salinity wastewater in real time, and discharging the circulating water and the high-salinity wastewater into a closed cooling tower water collecting tank when a discharge condition is met; (4) carrying out reverse scale precipitation treatment on the spray circulating water by using a nanocrystalline material, wherein the closed cooling tower runs under the limit concentration multiple and does not discharge water; and (5) the closed cooling tower sprays circulating water to evaporate and exchange heat, and precipitated scaling particles and crystallized salt particles are discharged after being deposited. Specific components in the high-salinity wastewater are selectively consumed to replace chemicals to remove hardness and obtain a chlorine byproduct, so that high-value utilization of the high-salinity wastewater is realized, and salt reduction and corrosion reduction effects in a downstream process are achieved.

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 relates to the technical field of dehumidification heat pumps, and particularly discloses a dehumidification heat pump unit with a chlorine and carbon dioxide detection function, which comprises a case, and an air inlet device, a fresh air device, an exhaust device, a heat exchange device and an air supply device which are arranged in the case, and further comprises a PLC (Programmable Logic Controller) control system and an integrated gas detection device electrically matched with the PLC control system; the integrated gas detection device is used in cooperation with the air inlet device and the heat exchange device, the integrated gas detection device comprises a chlorine gas detection module and a carbon dioxide detection module, and the heat exchange device comprises a compressor, an evaporator and a condenser; the PLC control system is electrically connected with the integrated gas detection device, the compressor, the fresh air device and the exhaust device and used for receiving chlorine and carbon dioxide concentration signals detected by the chlorine detection module and the carbon dioxide detection module. The fresh air device is regulated to increase the fresh air introduction amount and start the exhaust device to accelerate exhaust of waste gas in the swimming pool.

The invention relates to the technical field of seawater bromine extraction, in particular to a seawater bromine extraction method which comprises the following steps: an acidification process, an oxidation process, a blowing and sucking process and a distillation and condensation process so as to prepare industrial bromine. Preparing an acid raw material and an alkali raw material by using a bipolar membrane device; acidifying the seawater with an acid raw material to form a first mixed solution; oxidizing the first mixed solution by using chlorine gas to form a second mixed solution, and enabling the second mixed solution to enter a blow-off tower; blowing free bromine in the second mixed solution into the absorption tower through a blow-off tower, and remaining blown solution; reacting the free bromine in the absorption tower to obtain a finished solution; the finished liquid enters a distillation tower and is reduced by chlorine to obtain gaseous bromine simple substance, and the gaseous bromine simple substance is condensed, separated and rectified to obtain industrial bromine. The technical problem of low bromine extraction efficiency in traditional construction is solved, and the efficiency of extracting bromine from low-concentration seawater is 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 technical field of chemical engineering, provides an automatic chlorine-hydrogen flow ratio control device for a hydrochloric acid synthesis furnace, and solves the problem that the ratio of hydrogen to chlorine in the hydrochloric acid synthesis furnace cannot reach a theoretical set value due to design defects of the conventional device. Comprising a hydrochloric acid synthesis furnace, a hydrogen buffer tank and a chlorine buffer tank, the hydrogen buffer tank and the chlorine buffer tank are connected with the hydrochloric acid synthesis furnace, a hydrogen flow meter and a hydrogen purity detector are arranged between the hydrogen buffer tank and the hydrochloric acid synthesis furnace, and a chlorine flow meter and a chlorine purity detector are arranged between the chlorine buffer tank and the hydrochloric acid synthesis furnace. The online hydrogen purity detector and the chlorine purity detector are additionally arranged, the flow of hydrogen and chlorine is subjected to proportional control, the adding amount of hydrogen and chlorine is automatically adjusted, automatic adjustment is achieved, it is guaranteed that the ratio of hydrogen to chlorine reaches a theoretical set value, and then it is guaranteed that the concentration of finished hydrochloric acid is qualified.

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 utility model discloses a dechlorination device for drinking water filtration, and relates to the technical field of drinking water treatment, the dechlorination device comprises a box body, a supporting plate is fixedly mounted on the inner wall of the box body, and an activated carbon filter is fixedly mounted on the inner wall of the supporting plate; a heating cavity and a filtering cavity are fixedly installed at one end of the supporting plate in the box body, a heating plate is fixedly installed on the inner wall of the heating cavity, a temperature sensor is fixedly installed on the inner top wall of the heating cavity, and a temperature display screen and a switch module are fixedly installed on the surface of the box body; according to the dechlorination device for filtering the drinking water, the activated carbon filter, the filtering cavity and the heating cavity are arranged in the box body, particles and impurities in water are filtered through the filtering cavity, the filtered water is subjected to secondary filtering through the activated carbon filter, and the filtering effect is improved; the heating plate is arranged on the inner wall of the heating cavity to heat water, so that chlorine and impurities in the water are evaporated.

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 invention belongs to the field of light metal alloy smelting, and provides a preparation process of high-quality Mg-Li and Al-Li alloys with large smelting amount under normal pressure in order to meet the requirements of the market on high-quality magnesium-lithium and aluminum-lithium alloy large ingots, which comprises the following steps: firstly, preparing Li-Mg binary alloy elements from lithium salt and oxides of Ca, Mg and Al through reduction reaction; and the Li-Mg binary alloy element is smelted with a magnesium ingot or an aluminum ingot under normal pressure to obtain the corresponding Mg-Li or Al-Li alloy. According to the method, high-quality Mg-Li and Al-Li alloy large castings can be prepared under normal pressure, meanwhile, the yield of lithium is increased, electrolytic metal lithium is not needed to serve as a raw material for preparing magnesium-lithium or aluminum-lithium alloy, and therefore pollution caused by chlorine generated by traditional lithium electrolysis is avoided.

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 specifically discloses a lithium iron phosphate battery black powder recovery method. The method comprises the following steps: S100, carrying out defluorination pretreatment on lithium iron phosphate battery black powder; s200, introducing excessive chlorine into the defluorinated lithium iron phosphate battery black powder, and performing chloridizing roasting at a first preset temperature to obtain a low-temperature roasting product; s300, the low-temperature roasting product is subjected to water immersion dissolution, and filtrate containing lithium chloride and filter residues are obtained after filtering; s400, introducing excessive chlorine gas into the filter residues, performing chloridizing roasting at a second preset temperature, cooling after roasting is completed, and collecting condensate and residues; and S500, mixing the residues with hydrochloric acid or phosphoric acid, carrying out acid leaching washing, and filtering to obtain graphite. According to the lithium iron phosphate battery black powder recovery method, lithium and carbon in the battery black powder raw material can be effectively recovered, high-purity lithium chloride and graphite products are obtained, and the method has the advantages of being simple in process, few in product impurity and good in economic benefit.

The invention discloses an o-methylbenzyl chloride production process which comprises the following steps: S1, a chlorination section: pumping o-xylene into an evaporation kettle, heating, vaporizing the o-xylene in the kettle, enabling the vaporized o-xylene to enter a chlorination tower, introducing chlorine gas into the chlorination tower, and carrying out a chlorination reaction on the chlorine gas and rising o-xylene gas under the catalysis of visible light, the generated o-methylbenzyl chloride and o-dichlorobenzyl are in a liquid state and flow back into the evaporation kettle, the material crude benzyl in the kettle is transferred into a rectifying kettle, and hydrogen chloride gas generated by the reaction enters a hydrogen chloride absorption section. The supporting table, the feeding conveying belt, the discharging conveying belt and the rotatable transfer plate in the product tank conveying mechanism are matched with one another to form an efficient conveying system, after being placed on the feeding conveying belt, a finished product tank to be filled can be rapidly conveyed to the positions of the supporting table and the transfer plate, and through rotation of the transfer plate, the finished product tank to be filled can be rapidly conveyed to the supporting table and the transfer plate. And the finished product tanks can be accurately transferred to all stations, so that the conveying efficiency is greatly improved, and the manual carrying time and labor intensity are reduced.

A method of etching a copper layer formed on a substrate arranged inside a processing chamber of a substrate processing apparatus, includes: a first operation of supplying a first processing gas that contains at least a first chlorine-containing gas and does not contain a hydrogen gas into the processing chamber, and generating a first product from the copper layer by a first plasma generated from the first processing gas; and a second operation of supplying a second processing gas that contains at least the hydrogen gas and does not contain the first chlorine-containing gas and a second chlorine-containing gas into the processing chamber, and generating a second product from the first product by a second plasma generated from the second processing gas. The first operation and the second operation are alternately executed in a repetitive manner a predetermined number of times.

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 utility model discloses a mixed gas distribution device which comprises a bottom plate, a base fixedly installed at the top of the bottom plate, a mixing box fixedly installed at the top of the base, an argon box fixedly installed at the top of the bottom plate, a first sucking pump fixedly installed at the top of the argon box, and a first gas suction pipe fixedly installed at the suction end of the first sucking pump. The end, away from the first sucking pump, of the first air suction pipe extends into the argon box, and a first air feeding pipe is fixedly installed at the discharging end of the first sucking pump. The device is reasonable in design and good in practicability, chlorine and argon which are added into the mixing box can be fully stirred, the gas mixing efficiency is improved, the spiral gas conveying hose is used for enabling the mixed gas in conveying to continuously rotate, the mixed gas is prevented from being layered in the conveying process, the gas mixing effect is improved, and the service life of the device is prolonged. And the air pressure value in the mixing box can be increased by controlling the piston plate to move downwards, so that gas mixing is accelerated, and the mixed gas can be conveniently output for use.

The utility model discloses a chlorine gas vaporization energy-saving device, comprising a chlorine gas vaporization device and a chlorine gas buffer tank, wherein the chlorine gas vaporization device and the chlorine gas buffer tank are connected, the chlorine gas vaporization device is a parallel double-channel structure, the tube side of the chlorine gas vaporization device is connected to the liquid chlorine gasification pipeline, and the shell side of the chlorine gas vaporization device is connected to the hot water pipeline. The utility model has a simple and reliable structure, which not only fully recycles the sensible heat of steam condensed water, effectively reduces steam energy consumption, and greatly reduces the cost of steam use, but also realizes controllable temperature and pressure of chlorine gas vaporization, and solves the safety and environmental protection problem of nitrogen trichloride accumulation and emission in the chlorine gas vaporization process.

The utility model relates to an electronic-grade chlorine gas production device which comprises a vaporizer used for vaporizing and heating raw material liquid chlorine to obtain high-pressure chlorine gas; the pre-purifier is connected with the vaporizer and is used for pre-purifying the vaporized high-pressure chlorine; the first-stage heavy component removal system is connected with the pre-purifier and is used for removing heavy components from the purified high-pressure chlorine; and the second-stage light component removal system is connected with the first-stage heavy component removal system and is used for removing light components from the high-pressure chlorine subjected to heavy component removal treatment to obtain rectified liquid chlorine. The device integrates raw material vaporization, adsorption separation and rectification separation, continuous production can be achieved, and the produced electronic-grade chlorine meets the energy-saving and environment-friendly standard.

The invention relates to a seawater-based water electrolysis and salt electrolysis series-parallel hydrogen production system and a seawater-based water electrolysis and salt electrolysis series-parallel hydrogen production method. The device comprises an electrolyzed water coupling low-temperature distillation integrated system, a concentrated seawater treatment unit and a hydrogen purification unit, wherein the electrolyzed water coupling low-temperature distillation integrated system comprises an alkaline electrolytic bath unit, an oxygen separation cooling unit, a hydrogen separation cooling unit, an alkali liquor circulating filtering unit and a seawater desalination unit. Salt is directly extracted from concentrated seawater generated by the electrolyzed water coupling low-temperature distillation integrated system, NaOH, chlorine and hydrogen are prepared through the chlor-alkali electrolytic cell, the seawater utilization rate is higher, the device is arranged on the sea or on the sea, the overall occupied area is small, and efficient resource utilization of seawater is achieved.

The invention discloses a device and method for separating a titanium dioxide primary product and residual chlorine, the device comprises an outer cylinder, a spiral assembly and a negative pressure device, the spiral assembly is arranged in the outer cylinder; the spiral assembly comprises an inner barrel and a spiral plate, the inner side edge of the spiral plate is fixed to the outer wall of the inner barrel in a threaded mode, and the outer side edge of the spiral plate is adjacent to the inner wall of the outer barrel; a vent hole penetrating into the outer cylinder body is formed in the inner cylinder body; a first end of the inner cylinder is provided with a gas inlet, and a second end of the inner cylinder is provided with a gas outlet; and the negative pressure equipment is communicated with the gas outlet. By arranging the negative pressure equipment, matching with the vent holes and combining with a spiral stirring and conveying feeding mode, the separation efficiency can be greatly improved, and the chlorine content on the surface of titanium dioxide can be greatly reduced. And the separated chlorine gas is collected, enriched and recycled, or is absorbed by alkali liquor, so that the harm of the chlorine gas to the environment and human bodies is reduced.

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.