47 results about "Liquid chlorine" patented technology

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 utility model discloses a kind of liquid chlorine filling anti-leakage intelligent connecting devices, including liquid chlorine storage tank, the top of the liquid chlorine storage tank is equipped with connecting pipe, fixed ring is sleeved on the connecting pipe, the connecting pipe is equipped with cover plate, locking mechanism is installed on the side of the cover plate, filling mechanism is installed on the cover plate, first locking sleeve is sleeved on the filling mechanism, second locking sleeve is installed in the first locking sleeve, the second locking sleeve is fixed with feed pipe. The utility model is through the buckle type design of locking mechanism and fixed ring, realize the even locking and quick disassembly of cover plate and connecting pipe, effectively avoid the uneven stress and wear problem of traditional sealing structure;Filling mechanism is matched with double locking sleeve and shut-off valve, forms multilayer sealing system, in combination with the sealing seat and sealing ring of rubber material, significantly improve the anti-leakage performance under high pressure.

The invention discloses an intelligent alkali liquor adding system based on real-time monitoring and feedback control of a mercuric chloride production section, which comprises a liquid chlorine supply system and raw material pretreatment systems in sequential pumping connection, and the system can dynamically and accurately match fluctuating chlorine load in tail gas; and the problem that the addition amount of the alkali liquor is not matched with the chlorine concentration is effectively solved. The chlorine gas absorption efficiency is remarkably improved, up-to-standard discharge is ensured, the consumption of the alkali liquor is greatly reduced, the operation cost and the wastewater treatment burden are reduced, and the double improvement of economic benefits and environmental benefits is realized.

The utility model relates to the technical field of liquid chlorine treatment, in particular to a liquid chlorine steel cylinder treatment device and a using method. The device comprises a liquid chlorine steel cylinder, a gravity sensing base for sensing the weight of the liquid chlorine steel cylinder, and an evacuating and replacing unit which is communicated with the liquid chlorine steel cylinder and is used for removing residual chlorine in the liquid chlorine steel cylinder, the neutralizing unit is communicated with the liquid chlorine steel cylinder and is used for neutralizing residual chlorine; the purging and drying unit and the air tightness checking unit are sequentially arranged at the downstream of the evacuating and replacing unit; the liquid chlorine steel cylinder is provided with a gas-phase cylinder valve and a gas-phase distribution pipe which are communicated with the evacuation and replacement unit, and a liquid-phase cylinder valve and a liquid-phase distribution pipe which are communicated with the neutralization unit. The liquid chlorine steel cylinder treatment device has the effect of solving the problems that existing liquid chlorine steel cylinder treatment is tedious in operation and low in efficiency, and potential safety hazards exist.

The invention belongs to the technical field of gas leakage safety protection, and particularly relates to a water curtain spraying system based on the chlorine leakage condition of a liquid chlorine storage area, which deduces the predicted diffusion principal axis direction of a chlorine cloud cluster and the predicted concentration distribution situation along the axis by analyzing leakage points and three-dimensional wind field information, establishes a plurality of virtual interception planes perpendicular to the principal axis, and provides a water curtain spraying system based on the chlorine leakage condition of the liquid chlorine storage area. According to the predicted diffusion concentration distribution situation, determining a target contour area needing to be covered by the water curtain on each virtual interception plane, projecting a preset spraying range of each nozzle of the fixed water curtain belt to the virtual interception plane to form a fixed coverage area, and activating a nozzle group of which the coincidence degree with the corresponding target contour area meets a condition as a main interception unit, for the gap area which is not fixedly covered, coordinates and spraying angles are planned and deployed for the movable water curtain, water curtain spraying operation is executed, the protection effect of the water curtain is evaluated and fed back, and dynamic, efficient and accurate interception and decontamination of chlorine cloud cluster diffusion can be achieved.

The invention relates to the technical field of organic synthesis, in particular to the field of IPC C07D239, and more particularly relates to a synthesis method of a phenyl isoxazoline compound. Comprising the following steps: step 1, using a benzaldehyde compound as an initial raw material, and reacting with hydroxylamine hydrochloride to generate a benzaldoxime compound; 2, carrying out a chlorination reaction on the benzaldoxime compound generated in the step 1 and liquid chlorine through a microchannel reactor to generate a chlorinated benzaldoxime compound; and 3, carrying out ring closing on the chlorobenzaldoxime compound generated in the step 2 and an alkene compound to obtain the phenyl isoxazoline compound. A metal catalyst is not used in the preparation method, so that the solid waste treatment cost is reduced; in the step 2, a continuous flow reaction technology of a microchannel reactor is adopted, the reaction time is shortened, compared with a kettle type intermittent process, the productivity is greatly improved, and the reaction safety is higher.

This invention provides a liquid chlorine storage material for separating and storing chlorine from chlorine-containing gases. The material is a mixed ionic liquid composed of at least one organic salt and one additive, wherein the organic salt is selected from one or more quaternary ammonium salts, and the additive is a metal chloride. The chlorine storage material is liquid at 25°C and a pressure of 1000±100 hPa. This invention provides a storage medium with a high chlorine storage rate, high chlorine storage density, simple release conditions, and high chlorine purity. This storage medium effectively reduces the saturated vapor pressure of chlorine at room temperature, improving the safety of chlorine transportation and use.

This invention discloses a process for preparing chlorides by reducing chlorination with rare metal oxides, comprising the following steps: S1, in an inert atmosphere, a mixture containing rare metal oxide powder, a reducing agent, and a chloride salt is subjected to a reduction reaction at a predetermined temperature 1; S2, the temperature is lowered to a predetermined temperature 2, oxygen is introduced, and the concentration of oxygen in the mixed gas is adjusted to carry out a chlorination reaction, and the chlorinated product is condensed and collected. This invention eliminates the need for gaseous chlorinating agents such as chlorine or hydrogen chloride, avoiding the leakage risks of liquid chlorine and compressed hydrogen chloride during storage and transportation; the raw materials can be directly rare metal oxides, with a wide range of sources, good process adaptability, and significantly reduced production costs.

The utility model discloses a vaporization device for liquid chlorine raw materials, which relates to the technical field of vaporization of liquid chlorine raw materials and comprises a vaporization cylinder, a water inlet pipe is fixed at the bottom of the outer side wall of the vaporization cylinder, a drain pipe is fixed at the top of the outer side wall of the vaporization cylinder, and a liquid chlorine inlet pipe is fixed at the bottom of the outer side wall of the vaporization cylinder in a penetrating manner. A chlorine discharge pipe is fixed to the top of the outer side wall of the vaporization cylinder in a penetrating mode, a spiral pipe is fixed between the end of the liquid chlorine inlet pipe and the end of the chlorine discharge pipe, a turbulent flow mechanism is fixed to the top of the vaporization cylinder, and a flow division buffering mechanism is fixed to the outlet end of the chlorine discharge pipe; according to the vaporization device for the liquid chlorine raw material, water in the vaporization cylinder is disturbed through the arrangement of the turbulent flow mechanism, so that all parts of an internal water body are mixed, the temperature of all parts of the internal water body is guaranteed to be uniform during vaporization heat absorption, and the situation that the vaporization effect is affected due to uneven heating is avoided.

The utility model relates to the technical field of chlor-alkali plants, in particular to a high-energy-efficiency chlor-alkali plant freezing device which comprises a freezing box, a circulating mechanism is arranged in the freezing box, a stirring mechanism is arranged in the freezing box, the circulating mechanism comprises a box body, and the box body is fixedly installed at the top end of the freezing box. A first pump body is fixedly installed at the top end of the freezing box, a water inlet pipe of the first pump body communicates with the box body, a first guide pipe and a second guide pipe are rotationally connected to the side face of the freezing box, and one end of the first guide pipe and one end of the second guide pipe both penetrate through the inner wall of the freezing box. According to the chlorine gas cooling device, the circulating mechanism is arranged, so that the aim of driving refrigerating fluid to circularly flow in the freezing box is achieved, the aim of cooling and circularly flowing liquid chlorine gas is facilitated, and the aim of cooling the liquid chlorine gas is facilitated; the purpose of improving the liquidity of the liquid chlorine is achieved, and the freezing effect of the liquid chlorine is improved.

The invention discloses a method for leaching nickel concentrate by using wet chlorine, and belongs to the field of hydrometallurgy. The problems that the liquid chlorine use cost is high, the chlorine overflow risk exists in the vaporization heating process, and the effective utilization rate of the vaporized chlorine and the raw material reaction is low are solved. The method comprises the steps that nickel concentrate and copper removal tailings are mixed, slag flushing is conducted through new water, and slurry automatically flows into a slurrying tank and then is slurried; after slurrying, returning feed liquid into the reaction kettle for stirring, preparing liquid caustic soda as absorption liquid in the two-stage absorption tower, and opening a tail gas absorption fan and a tail gas absorption pipeline valve of the reaction kettle; introducing steam and wet chlorine into the reaction kettle to react with the feed liquid; and returning the reacted feed liquid into a filter press for solid-liquid separation to obtain a leaching solution and leaching residues. By replacing common liquid chlorine with wet chlorine generated in the industrial production process, the problems of high liquid chlorine use cost, chlorine overflow risk in the vaporization heating process, low effective utilization rate of the vaporized chlorine and raw material reaction and the like are solved.

The utility model relates to the technical field of chlorine preparation, and discloses chlorine gasification equipment which comprises a feeding pipe, one end of the feeding pipe is communicated with a dispersing pipe, the outer wall of the dispersing pipe is communicated with a conveying pipe, the other end of the conveying pipe is communicated with a vaporization pool, the inner wall of the vaporization pool is provided with a spiral pipe I, and the spiral pipe I is provided with a spiral pipe II. A first spiral pipe is arranged on the inner wall of the vaporization pool, a second spiral pipe is arranged on the inner wall of the vaporization pool, the two ends of the first spiral pipe and the two ends of the second spiral pipe communicate with circulating pools, one end of the first spiral pipe and one end of the second spiral pipe are each provided with a conveying pump, a gas conveying pipe is arranged at the upper end of the vaporization pool, and the other end of the gas conveying pipe communicates with a buffer tank. According to the utility model, the liquid chlorine is conveyed into the vaporization pool, and the spiral pipe I and the spiral pipe II are arranged in opposite directions, so that the temperature in the vaporization pool is uniform and stable, the vaporization efficiency is higher, and the vaporized chlorine is conveyed into the buffer tank through the gas conveying pipe and then is conveyed out from the buffer tank for application.

The utility model discloses novel liquid chlorine vaporization equipment, which relates to the technical field of chemical equipment and comprises a sealed box body, a connecting pipe is arranged in the box body, the input end of the connecting pipe is connected with a liquid chlorine steel cylinder, and the output end of the connecting pipe is connected with a pressure buffer tank. A plurality of evenly-distributed bent pipes are fixedly connected to the front side face of the sealing box body, welding seams are arranged on the outer sides of the joints of the bent pipes and the sealing box body, the outer ends of the welding seams are surrounded by fixed bases, the outer side faces of the fixed bases are connected with sliding bases, and the fixed bases are connected with the sliding bases in a buckled mode. A sealing belt is arranged at the joint of the sliding base and the bent pipe, an electrochemical sensor is arranged at the top end of the fixed base, a switch and an absorption tank are arranged on the left side face of the sealing box body, and a central processing unit and an alarm are further arranged at the top end of the sealing box body. The maintenance efficiency and the use safety are improved, and the service life of equipment is prolonged.

The utility model discloses a liquid chlorine gasification mixing device which comprises a mixing tank, the bottom side in the mixing tank is rotatably connected with a gas distribution box, the top end of the gas distribution box is uniformly provided with a plurality of first gas nozzles, the bottom end of the gas distribution box is communicated with a chlorine pipeline, and the chlorine pipeline is rotatably connected with the mixing tank in a sealed mode. A sealing cover is mounted at the top end of the mixing tank, a gas outlet pipe communicates with the sealing cover, a nitrogen pipeline is rotationally connected to the sealing cover in a sealed mode, a plurality of gas spraying pipes communicate with the bottom side of the outer portion of the nitrogen pipeline, a plurality of second gas spraying openings are formed in the bottom ends of the gas spraying pipes, and driving mechanisms are mounted at the top end of the sealing cover and the bottom end of the mixing tank; the two driving mechanisms respectively drive the chlorine gas pipeline and the nitrogen gas pipeline to rotate, so that nitrogen gas and chlorine gas can be conveniently and uniformly conveyed into the mixing tank, meanwhile, the nitrogen gas and the chlorine gas can be stirred, and the nitrogen gas and chlorine gas mixing effect is improved.

The application discloses a kind of liquid chlorine storage tank inlet and outlet material automatic switching control method and system, existing switching is not timely, cause pipeline pressure to be kept up or downstream material to be cut off, thereby causing leakage or fire problem that liquid chlorine storage tank switching relies on manual table mode.The method comprises collecting parameter information in each storage tank;According to the selection parameter information, the selection probability of each standby storage tank in the current selection period is calculated, and the optimal standby storage tank to be switched is selected out;When the storage tank meets the slotting condition, control is carried out to switch.The application accurately tracks and calculates the liquid level, pressure and valve state of each part of the multiple liquid chlorine storage tanks, thereby greatly reducing the difficulty of frequent switching of the multiple liquid chlorine storage tanks, and finally realizing the full-automatic switching of the entire liquid chlorine storage tank system in a precise and orderly manner and intelligently.Improving the work efficiency of operators, precise alignment, intelligent error prevention and fully-automatic process switching are realized.

The invention relates to the field of electronic-grade chlorine production, and particularly discloses an electronic-grade chlorine production and purification system and a production process thereof.The electronic-grade chlorine production and purification system comprises a raw material dehydration unit, a light component removal unit and a product refining unit, and the raw material dehydration unit comprises a first heat exchanger, a first condenser, a first reboiler and a first rectifying tower. Moisture and nitrogen trichloride in raw materials are removed through rectification operation of the first rectification tower, corrosion of wet chlorine to follow-up equipment is prevented, metal ion pollution is introduced, materials extracted from the tower top then enter the second rectification tower, and low-boiling-point impurities such as carbon dioxide are separated and removed through boiling point difference; liquid chlorine in the tower kettle of the second rectifying tower enters a third rectifying tower, high-boiling-point heavy components such as metal chlorides are further removed, a high-purity electronic-grade chlorine product is finally extracted from the tower top, heavy components discharged from the tower kettle of the third rectifying tower need to be regularly fed into waste liquid for treatment, and the whole process adopts a sequence of pre-dehydration, light component removal and heavy component removal; the work division is clear; and the equipment is effectively protected.

This application relates to the field of polymer compound technology, specifically disclosing a method for preparing a high-weather-resistant chlorinated polyethylene rubber-plastic material and its application. The method includes the following steps: S1, Raw material preparation: High-density polyethylene, dispersant, emulsifier, and water are mixed in a specific ratio and then added to a reaction vessel and stirred until homogeneous; S2, Low-temperature initiation chlorination: Liquid chlorine is introduced into the reaction vessel, controlling the reaction temperature and pressure, and using a low flow rate to allow chlorine free radicals to enter the amorphous region edge of the high-density polyethylene; S3, Medium-temperature diffusion chlorination: The temperature is increased and the reaction vessel pressure is raised, controlling the chlorine introduction rate to allow chlorine atoms to diffuse towards the crystalline region edge of the high-density polyethylene; S4, High-temperature randomization chlorination; S5, Post-treatment purification. The material of this application can be used in outdoor building sealing strips, photovoltaic cable sheaths, automotive waterproof films, and weather-resistant conveyor belts, exhibiting excellent resistance to ultraviolet aging and thermo-oxidative aging.

The utility model relates to the technical field of chemical equipment, and provides a liquid chlorine filtering device which comprises a sealing cover plate and a filtering box, an L-shaped air inlet pipe and an L-shaped exhaust pipe which extend into the filtering box are fixedly arranged on the sealing cover plate, a first annular support is fixedly arranged in the filtering box, and a second annular support and two filtering cylinders are installed in the filtering box in a sealed and sliding mode. Filter screens are fixedly arranged at the lower ends of the two filter cylinders and the second annular bracket; two symmetrical arc-shaped pressing plates are fixedly arranged on the lower end surface of the sealing cover plate; the filtering device has the advantages that impurities are filtered through the two filtering barrels and the filtering net, the filtering effect is improved, the filtering box can be conveniently disassembled and assembled, the convenience of cleaning the filtering barrels and the filtering net is improved, the filtering effect is improved, and the filtering device is suitable for popularization and application. And the working efficiency is improved, the labor amount is reduced, and great economic benefits are achieved.

The present application relates to the technical fields of tank truck filling, and discloses a liquid chlorine tank truck filling device, which comprises a supporting column, the outer wall of the supporting column is provided with a plurality of conveying pipes, the outer wall of each conveying pipe is fixedly connected with a flange plate, the side of each conveying pipe away from the flange plate is rotatably connected with a rotary joint, and the outer wall of each conveying pipe is fixedly connected with a balancer, when the second fixing disc suddenly rotates, the limiting rod moves to the right side under the influence of centrifugal force, the limiting rod is in contact with the side wall of the second limiting groove, so that relative stillness is generated between the first fixing disc and the rotary joint, the rotation of the conveying pipe at the inner wall of the rotary joint is limited, the problem that if the balancer matched with the crane pipe suddenly fails when the crane pipe is connected with the tank truck and enters the medium conveying operation stage, the conveying pipe body rotates uncontrollably at the rotary joint under the influence of the relatively large dead weight of the crane pipe body, and the structural damage of the filling joint and safety accidents are caused is effectively prevented.

The utility model belongs to the technical field of waste gas absorption, and particularly relates to a liquid chlorine storage tank waste gas absorption device which comprises an outer cavity, a cylinder is mounted at the edge of the top side of the outer cavity, a pore plate is mounted on the inner wall of the cylinder, wet starch-potassium iodide test paper is mounted on the top side of the pore plate, and a camera is mounted on the top side of the cylinder in a penetrating manner. A connecting cavity is formed in the outer side of the middle end of the air conveying pipe, a negative pressure motor is installed in the connecting cavity, and three fan blades are installed at the output end of the negative pressure motor. When the liquid chlorine storage tank body leaks chlorine, the leaked chlorine diffuses into the outer cavity and penetrates through the pore plate to be in contact with the wet starch-potassium iodide test paper, the test paper turns blue due to the oxidability of the chlorine, so that chlorine leakage is indicated, the camera monitors the state of the test paper in real time, and once it is found that the test paper turns blue, the test paper stops working. The camera transmits a signal to the control panel, and the control panel starts the negative pressure motor, so that the chlorine leakage condition is found in time, and the negative pressure motor is automatically started to perform gas suction treatment.

The utility model relates to the technical field of plant construction, and particularly discloses a novel fireproof device in a liquid chlorine plant, which comprises a fireproof wall, a steel door frame arranged on the fireproof wall and a fireproof door arranged in the steel door frame, the steel main frame and the steel auxiliary frame are fixedly arranged side by side in the thickness direction of the firewall, the steel auxiliary frame comprises two C-shaped auxiliary frames and two first connecting plates, the two C-shaped auxiliary frames are oppositely arranged in an opening mode in the thickness direction of the firewall, and adjusting seams capable of adjusting the thickness of the steel auxiliary frame in the thickness direction of the firewall are reserved in the two sides of the steel auxiliary frame. The two first connecting plates are arranged on the inner sides of the adjusting seams on the two sides of the steel auxiliary frame correspondingly to be welded and fixed, so that the overall thickness of the steel door frame can be adjusted conveniently according to the thickness of the firewall, and the phenomena that the decorative panel and an external corner at the closing-up position of the steel door frame protrude out of the steel door frame, and the overall quality and appearance are affected due to the fact that the decorative panel is likely to be collided and cracked in the using process are avoided.

The utility model relates to the technical field of liquid chlorine filtration and purification, and discloses a liquid chlorine solution filtering device which comprises a first mounting plate, a supporting column is fixedly mounted at the bottom of the first mounting plate, a second mounting plate is fixedly mounted at the bottom of the supporting column, and a magnetic pump is assembled in an inner cavity of the first mounting plate. According to the liquid chlorine solution filtering device, the magnetic drive pump is electrically connected with the control panel, electric energy is converted into kinetic energy to push liquid chlorine to flow, the liquid chlorine solution filtering device is suitable for a continuous flow scene, an air inlet is formed in the top of the magnetic drive pump, and when the magnetic drive pump breaks down or the pressure is insufficient, the magnetic drive pump can filter the liquid chlorine. Inert gas can be input through the gas inlet to pressurize and push liquid chlorine to flow, the device is suitable for intermittent operation or standby driving, the outer wall of the pressurizing cylinder is sleeved with the cooling sleeve, the temperature of the liquid chlorine is lower than the boiling point of the liquid chlorine, filter element blockage or pressure system fluctuation caused by liquid chlorine gasification is prevented, and the filtering efficiency is greatly improved.

The utility model relates to the technical field of liquid chlorine steel cylinders, in particular to a portable liquid chlorine steel cylinder valve plugging device which comprises a fixed base used for containing a liquid chlorine steel cylinder valve, a plugging plate used for plugging an outlet of the cylinder valve and a threaded pressure lever used for connecting the plugging plate and the fixed base. The threaded pressure lever penetrates through the leaking stoppage plate and is rotationally connected with the fixed base. The device has the effect that the leaked liquid chlorine steel cylinder valve can be treated more quickly and simply.

The utility model relates to the technical field of wastewater treatment, in particular to medical wastewater treatment equipment which comprises a wastewater treatment chamber, a wastewater adjusting chamber and a wastewater disinfection chamber, and the wastewater treatment chamber and the wastewater disinfection chamber are arranged on two sides of the wastewater adjusting chamber; the wastewater treatment chamber comprises a primary treatment chamber and a secondary treatment chamber, the wastewater regulation chamber comprises a regulation and control chamber, a dosing chamber, a neutralization chamber and a biological reaction chamber, and the wastewater disinfection chamber comprises a liquid chlorine disinfection chamber and a disinfection battery valve; the primary treatment chamber and the secondary treatment chamber are arranged on one side of the regulation and control chamber to primarily treat wastewater, the regulation and control chamber regulates and controls the wastewater regulation chamber, the liquid chlorine disinfection chamber disinfects the wastewater, and the disinfection battery valve disinfects the wastewater regulation chamber; the wastewater is purified through the primary treatment chamber and the secondary treatment chamber; the regulating chamber controls the flow velocity of the wastewater regulating chamber to realize deep purification; the used wastewater adjusting chamber is flushed and disinfected through a disinfection battery valve of the liquid chlorine disinfection chamber, water quality is safe, cross contamination is prevented, the structure is compact, the automation degree is high, and practicability is high.

The present application belongs to the technical field of gas leakage safety protection, and specifically relates to a water curtain spraying system based on chlorine leakage conditions in a liquid chlorine storage area, which analyzes a leakage point and three-dimensional wind field information, deduces a predicted diffusion main axis direction of a chlorine cloud and a predicted concentration distribution trend along the axis, sets up a plurality of virtual interception planes perpendicular to the main axis, determines a target contour area on each virtual interception plane that needs to be covered by a water curtain according to the predicted diffusion concentration distribution trend, projects a preset spraying range of each nozzle of a fixed water curtain into the virtual interception plane to form a fixed covered area, activates a nozzle group that meets a condition of coincidence with a corresponding target contour area as a main interception unit, deploys coordinates and a spraying angle for a mobile water curtain for a gap area that is not covered by the fixed water curtain, executes a water curtain spraying operation, and evaluates and feeds back a protection effect, which is helpful to realize dynamic, efficient and accurate interception and decontamination of chlorine cloud diffusion.

The present application is suitable for chlorine production technical field, provide a kind of liquid chlorine gasification process, comprising the following steps: step one: liquid chlorine steel bottle in liquid chlorine bottle storehouse is connected into distillation column for distillation separation by liquid chlorine distribution platform;Step two: gaseous material from the top of distillation column enters condenser, and the liquid outlet of condenser is connected with chlorine gasifier by liquid chlorine pipeline;Step three: liquid chlorine enters the inner tube of chlorine gasifier, and is heated by 80-83 DEG C medium, and liquid chlorine is gasified by heat absorption;Step four: after drying and impurity removal, chlorine is sent to chlorine buffer tank by chlorine turbine compressor, and after the stable pressure of chlorine in chlorine buffer tank, it is sent to each chlorine point by chlorine pipe network.The distillation column and chlorine dryer can remove nitrogen trichloride, metal chloride and non-metallic chloride, thereby improving the purity of chlorine, and avoiding the influence on bromine extraction;The establishment of accident chlorine absorption device can handle leaked chlorine in time, and guarantee the safety of chlorine use.

The invention relates to the technical field of fluorine chemical industry production, in particular to a preparation method of difluoromethane, which comprises the following steps: S1, continuously introducing hydrogen fluoride, liquid chlorine and vaporized dichloromethane into a reaction kettle filled with a catalyst for catalytic reaction to obtain a first material containing difluoromethane, hydrogen chloride and an intermediate product; s2, separating hydrogen chloride from the first material to obtain a second material; s3, sequentially dehydrating the second material, removing light components, rectifying to obtain a difluoromethane product from the tower top, and condensing and collecting; and S4, refining the tower kettle material rectified in the step S3 to obtain fluorochloromethane, and returning to the step S1 to participate in the reaction. According to the invention, the liquid chlorine is used as a chlorine source, the liquid chlorine is vaporized to absorb reaction heat, and microscale turbulence and volume expansion effect are generated during vaporization, so that generated chlorine molecules are uniformly dispersed in the reaction liquid, the problem of non-uniform chlorine concentration distribution caused by traditional gas phase bubbling is avoided, and the overall activity of the catalyst is maintained in an optimal and stable oxidation reduction state.

An integrated liquid chlorine tank car unloading safety configuration system comprises an unloading unit, a liquid chlorine packaging unit, a chlorine liquefaction unit, an accident chlorine collection unit and a sodium hypochlorite absorption unit, and an unloading assembly unit comprises an unloading position provided with an unloading crane pipe and a liquid chlorine storage tank; the liquid chlorine packaging unit comprises a liquid chlorine packaging pump and a plurality of liquid chlorine steel cylinders; the chlorine liquefaction assembly unit comprises a first vapor-liquid separator and a chlorine condenser; the sodium hypochlorite absorption assembly unit comprises a sodium hypochlorite absorption tower, an alkali liquor storage tank, a tap water storage tank, an alkali preparation tank and a sodium hypochlorite circulating tank. Compared with the prior art, the liquid chlorine unloading system integrating unloading, packaging, liquid chlorine condensation recovery and accident chlorine recovery treatment is built, rapid and safe liquid chlorine unloading is achieved through cooperation of all the units, the situation that the environment is seriously polluted due to leakage or improper emission is greatly reduced, and the environmental pollution is reduced. And potential safety hazards to an ecological system and human health are avoided.

The utility model provides a bracket suitable for safe transfer of a liquid chlorine steel cylinder, which comprises a base, a group of supporting mechanisms are arranged on the upper portion of the base, the liquid chlorine steel cylinder is placed on the supporting mechanisms, reinforcing rings are symmetrically arranged on the outer side wall of the liquid chlorine steel cylinder, and fixing frames are arranged on the upper portion of the base and located on two sides of the arc-shaped outer wall of the liquid chlorine steel cylinder. Due to the fact that the base is provided with the fixing frames and the flexible restraining pieces, axial movement of the liquid chlorine steel cylinder can be effectively limited, collision and friction caused by bumping and sudden braking in the transportation process are avoided, the surface of a valve and the surface of the steel cylinder are protected, the leakage risk is reduced, and the transportation safety is improved.

The application provides a synthesis method of 1,2,3,4-tetrachlorobutane and belongs to the technical field of organic synthesis. The synthesis method comprises the following steps: mixing 1,3-butadiene and halogenated alkane in a protective gas environment to obtain a mixture; introducing liquid chlorine into a sealed environment filled with the protective gas, and then adding the mixture into the liquid chlorine dropwisely at 30-40 DEG C to obtain 1,2,3,4-tetrachlorobutane. The reaction environment in the whole synthesis process is safe, a large amount of waste water is not generated, a large amount of chlorine waste gas is not generated, the raw material conversion rate is high, and the product yield is high and stable.