21 results about "Hexachloroethane" patented technology

The invention relates to the technical field of aluminum alloy materials, in particular to a high-temperature-resistant and high-strength aluminum alloy material and a preparation method thereof. The problems that an existing aluminum alloy material is insufficient in mechanical property and poor in high temperature resistance are solved. A plurality of strengthening elements with synergistic effects, including copper, magnesium, scandium, zirconium, nickel, manganese and titanium, are introduced into an aluminum alloy matrix, meanwhile, multiple layers of graphene nanosheets are added for step-by-step smelting, and under argon protection, hexachloroethane refining and lithium salt complexing agent grain refinement are performed to prepare a smelted alloy; and by combining the multi-stage refined smelting, the staged heat treatment process, the three-stage aging treatment and the surface modification process, the microstructure is optimized, and meanwhile the surface performance is improved. According to the prepared aluminum alloy material, through multi-element cooperation and multi-process optimization, the mechanical property, the high temperature resistance and the surface oxidation resistance of aluminum alloy are remarkably improved, and the aluminum alloy material is suitable for the field of aerospace.

The invention relates to the technical field of preparation of aluminum alloy conductor materials, and particularly discloses a preparation method of an Al-Mg-Si-RE-based aluminum alloy conductor for a 10-35kV middle and low voltage cable, which comprises the following steps: adding a microalloyed intermediate alloy into an aluminum melt by adopting an addition method, stirring, smelting, refining, and casting to form, thereby obtaining the Al-Mg-Si-RE-based aluminum alloy conductor for the 10-35kV middle and low voltage cable. And performing annealing, rolling, wire drawing and aging heat treatment to obtain a final product. Wherein in the smelting stage, raw materials are completely melted at 700-750 DEG C; hexachloroethane is used as a refining agent for refining; annealing at 330-350 DEG C and preserving heat for 4-8 hours; and aging at 300 DEG C for 10 hours after deformation. In the preparation of a wire of a 10-35kV medium and low voltage power cable, the aluminum alloy wire has high conductivity of 62.1-62.5% IACS (International Annealed Copper Standard) and tensile strength of 101-117MPa by simplifying the process steps and optimizing the element ratio on the premise of ensuring the controllable raw material cost, and the mechanical property and electrical property requirements of the medium and low voltage wire are balanced.

The utility model relates to the technical field of hexachloroethane raw material storage, in particular to a hexachloroethane raw material storage device with a protective structure, which comprises a storage tank, a cover, a first protective shell, a protective cover and a mounting plate. Two sets of mounting plates are fixedly connected into the first protective shell, one set of mounting plates comprises four mounting plates, and a storage tank is arranged between the two sets of mounting plates. A double-layer protection structure is formed by the storage tank and the first protection shell, materials are prevented from making direct contact with the external environment when the inner shell leaks, when the inner shell is damaged, the outer layer can still prevent hexachloroethane from leaking out, and the double-layer protection structure can better protect hexachloroethane in the storage tank.

A kettle cover is arranged at the top end of a kettle body, a plurality of second connecting plates are arranged on the periphery of the kettle cover, the second connecting plates correspond to first connecting plates of the kettle body in a one-to-one mode and are connected with the first connecting plates of the kettle body in a fastening mode, and an inwards-concave surrounding plate is arranged at the bottom of the kettle cover and connected with the inner wall of the kettle body. An annular groove is formed in the outer edge of the inwards-concave surrounding plate, a sealing ring is arranged in the annular groove formed in the inwards-concave surrounding plate, the sealing ring is pressed on the inner wall of the kettle body and the inner wall of the kettle cover, a plurality of first reinforcing plates are evenly arranged on the sealing ring in the radial direction, the bottoms of the first reinforcing plates are connected with the inner wall of the inwards-concave surrounding plate, and a stirring paddle is arranged in the kettle body. Meanwhile, a plurality of first reinforcing plates are arranged in the kettle cover, and the bottoms of the first reinforcing plates are supported on the concave coaming, so that the supporting performance of the kettle cover and the concave coaming is greatly improved, leakage caused by deformation of the kettle cover or the concave coaming in the long-term use process is avoided, and the service life is prolonged.

The application relates to a method for preparing graphene by solid-liquid in-situ reaction and graphene prepared by the method. The method comprises the following steps: heating and melting magnesium or a magnesium alloy in a crucible to obtain a melt; adding solid hexachloroethane into the melt at a speed of 1 g / min to 20 g / min and performing mechanical stirring, and then standing to obtain a mixture containing graphene above the melt; the mass amount of the solid hexachloroethane is 2% to 5% of the mass of the melt; separating the obtained mixture containing graphene from the melt; and performing post-treatment on the mixture containing graphene separated from the melt to obtain graphene. The application provides a method for preparing graphene in large quantities at low cost, with high production efficiency and high quality; the method has the advantages of simple operation, simple production equipment, low production cost, high yield, high graphene quality, fewer defects and impurities, excellent product performance and the like.

A method for separating R22 and HFP, the method comprising: a mixing step for obtaining a mixture for extraction, the mixture being a mixture of a first mixture containing R22 and HFP and an extraction solvent containing an organic solvent selected from the group consisting of dichloromethane, chloroform, 1, 1, 1-trichloroethane, 1, 1, 2-trichloroethane, 1, 1, 1, 2-tetrachloroethane, 1, 1, 2, 3, 3-tetrachloroethane, 1, 1, 2, 3-tetrachloroethane, 1, 1, 2, 3, 3-tetrachloroethane, 1, 1, 2, 3, 3-tetrachloroethane, 1, 1, 2, 3-tetrachloroethane, 1, 1, 2, 3, 3-tetrachloroethane, 1, 1, 2, 3-tetrachloroethane, 1, 1, at least one chlorine-containing compound selected from the group consisting of 1, 1, 1, 2-tetrachloroethane, pentachloroethane, hexachloroethane, trichloroethylene and tetrachloroethylene; and an extraction distillation step in which the mixture for extraction is distilled to obtain a first distillate having HFP as the main component and a first bottoms product having the extraction solvent as the main component and containing R22, respectively, and an extraction distillation step in which the mixture for extraction is distilled to obtain a first distillate having HFP as the main component and a first bottoms product having R22 as the main component.

The application discloses a method for refining magnesium-aluminum alloy crystal grains by carbon inoculation, and belongs to the technical field of magnesium alloy material processing. The method comprises the following steps: heating magnesium-aluminum alloy to 680-800 DEG C under a protective atmosphere, melting the magnesium-aluminum alloy, adding carbon inoculant hexachloroethane (C2Cl6), the adding amount being 0.1%-1.5% of the mass of the melt, adding by means of bell jar pressing, and keeping the temperature at 680-800 DEG C for 5-60 minutes, so that carbon and aluminum in the melt react in situ to generate high-density and dispersedly-distributed Al4C3 particles, which serve as effective heterogeneous nucleation cores of alpha-Mg, thereby significantly refining the crystal grains. The application is also provided with a tail gas treatment system for absorbing harmful gases such as Cl2. The method has the advantages of remarkable refining effect, strong anti-recession property, low cost, and suitability for magnesium-aluminum alloys with different aluminum contents, and solves the problems of instability, easy failure or environmental pollution in the prior art.

A left stand column and a right stand column are vertically arranged on the upper surface of a bottom plate, bearing seats are arranged on the inner sides of the upper portions of the left stand column and the right stand column, a first conical barrel and a second conical barrel are arranged at the two ends of a charging barrel respectively, a feeding port is formed in the outer end of the first conical barrel, and a discharging port is formed in the outer end of the second conical barrel. The feeding port is provided with a first flange, a left protruding shaft and a right protruding shaft are arranged on the two sides of the charging barrel, the left protruding shaft is connected with a bearing in a bearing seat on the inner side of the left stand column in a matched mode, the right protruding shaft is connected with a bearing in a bearing seat on the inner side of the right stand column in a matched mode, and an output shaft of the gear motor is connected with the right protruding shaft in a matched mode. According to the utility model, the structure is reasonable, hexachloroethane which is not completely crushed can be intercepted in the conical screen drum through the screen holes of the conical screen drum, the product quality is ensured, and the charging barrel can be turned over, so that hexachloroethane balls intercepted in the conical screen drum can be conveniently poured out.

The application provides a catalyst based on ball-milling degradation residues and a preparation method and application thereof. The catalyst comprises the following steps: based on the optimal condition of removing hexachloroethane by mechanical grinding, recycling the magnetic tailings; taking natural bentonite as raw material, carrying out roasting modification, and then loading the grinding agent on the modified bentonite by a chemical precipitation method. Compared with the traditional grinding agent treatment method, the process of the application is simple, the condition is mild, and resource waste is avoided; meanwhile, the material has good removal effect on simulated wastewater and good reusability. The process of the application has wide application range, the main raw materials are all the remaining materials of mechanical grinding, other raw materials are simple to obtain, the resource waste is avoided, the pollutants in water are removed, and the application is an environmental protection and efficient resource recycling method.

The utility model discloses a hexachloroethane reation kettle convenient to wash is provided with kettle cover on the upper surface of cauldron body, and the central position of kettle cover upper surface is provided with motor through motor base, and the output shaft of motor is connected with the top end of stirring shaft through the coupling, and the lower end of stirring shaft is provided with stirring oar, and the water distribution plate is set up on the lower surface of kettle cover through bolt, and the upper surface of water distribution plate is provided with annular groove, and the lateral wall of water distribution plate is provided with a plurality of side water outlet holes, and the water distribution plate is located at annular groove and is provided with a plurality of bottom water outlet holes along the axial direction, and the upper surface of kettle cover is provided with water inlet, and the central hole of water distribution plate is provided with bearing sleeve, and the stirring shaft is arranged in bearing sleeve and cooperates with bearing sleeve, the utility model discloses reasonable structure, and the water distribution plate washes the inner wall of cauldron body and stirring oar through side water outlet hole and bottom water outlet hole respectively, and the convenience and cleaning effect greatly improve, and the stability is also higher than pipeline, and need not open hole in the inner wall of cauldron body, and reduce the processing difficulty of reation kettle.

The invention relates to the field of new material fine chemicals, in particular to preparation of corresponding hydrocarbyl acyl chloride and oxalyl chloride by reaction of hexachloroethane serving as a novel acylation reagent and carboxylic acid. Acyl chloride is a functional chemical material which is numerous in variety and wide in application, and the process technology has outstanding environmental friendliness and low-cost competitiveness.

The invention provides a preparation method of an aluminum-lithium alloy, and belongs to the technical field of aluminum alloy smelting. The method comprises the following steps: smelting pure aluminum, an aluminum-copper alloy, an aluminum-manganese alloy, an aluminum-zirconium alloy, a magnesium ingot and silver particles to obtain an initial melt; adding a deslagging agent into the initial melt, and stirring to obtain a purified melt; argon is introduced into the purified melt for refining, and a refined melt is obtained; and after the refined melt and lithium are subjected to vacuum melting, argon is introduced for refining, and the aluminum-lithium alloy is obtained. The pure aluminum, the intermediate alloy, the magnesium and the silver are added in batches for smelting at different temperatures according to the refractory degree of the intermediate alloy in the intermediate frequency furnace smelting stage, so that the burning loss rate of alloy elements can be reduced; hexachloroethane deslagging and stirring blowing refining can improve the degassing efficiency and control the cost, and the process matching is flexible; lithium is added into the melt in an argon state, so that the melt is prevented from being in contact with the atmosphere, the oxidation hydrogen absorption of the melt is reduced, and the high-purity melt is obtained.

The invention belongs to the technical field of organic chemistry, and particularly relates to a separation and recovery method of a mixed solution. In order to solve the problem of high energy consumption of a rectification separation mode in the prior art, the invention provides a separation and recovery method of a mixed solution, which comprises the following steps: transferring the mixed solution containing tetrachloroethylene, hexachloroethane, hexachlorobutadiene and hexachlorobenzene into a melt crystallizer, and carrying out programmed cooling by using the melt crystallizer until the temperature of the mixed solution is 25-100 DEG C, so as to obtain a mixed solution containing tetrachloroethylene, hexachloroethane, hexachlorobutadiene and hexachlorobenzene; solidifying the high-melting-point substance in the mixture onto a crystallizer to obtain a product crystal; transferring the liquid phase as residual liquid into a residual liquid tank; raising the temperature to 185-190 DEG C to sublimate and condense hexachloroethane to form hexachloroethane crystals; heating the remaining product crystals to 220-230 DEG C for melting, and discharging the remaining product crystals into a product tank to obtain a hexachlorobenzene solution; and carrying out rectification separation on the residual liquid to obtain a tower top light component tetrachloroethylene product and a tower bottom heavy component hexachlorobutadiene product. The highest operation temperature is 250 DEG C or below, and the energy consumption is low.

The invention provides a hexachloroethane product and a recovery method thereof.The recovery method comprises the steps that heavy components of production waste are evaporated, and a first gas phase and a first solid phase are obtained; mixing and stirring the first solid phase and a first solvent, and performing solid-liquid separation to obtain a second solid phase and a first liquid phase; performing first distillation on the first liquid phase to obtain a third solid phase and a second gas phase; mixing the third solid phase with a second solvent, and performing second distillation to obtain a second liquid phase and a third gas phase; performing first cooling on the third gas phase to obtain a third liquid phase and a fourth solid phase; mixing the fourth solid phase with a third solvent, heating, and cooling to room temperature to obtain a solid-liquid mixture; the solid-liquid mixture is subjected to solid-liquid separation, a fourth liquid phase and a fifth solid phase are obtained, and the fifth solid phase comprises hexachloroethane. The recovery method provided by the invention is beneficial to reducing the energy consumption of recovery treatment and improving the recovery rate and the purity of the recovered material.

A method for separating R22 and HFP includes a mixing step of obtaining a mixture for extraction which is a mixture of a first mixture including R22 and HFP and an extraction solvent including at least one chlorine-containing compound selected from the group consisting of methylene chloride, chloroform, 1,1,1-trichloroethane, 1,1,2-trichloroethane, 1,1,1,2-tetrachloroethane, 1,1,2,2-tetrachloroethane, pentachloroethane, hexachloroethane, trichloroethylene, and tetrachloroethylene, and an extraction distillation step of distilling the mixture for extraction to respectively obtain a first distillate including HFP as a main component, and a first bottom product including the extraction solvent as a main component and including R22.

The invention discloses a flux of a magnesium-rare earth-zirconium magnesium alloy and a composite refining process, and particularly relates to the field of alloy smelting. Flux, magnesium ingots and foundry returns are added into a smelting container, and a first melt is obtained after furnace charge is smelted; a zinc ingot is added into the first melt, and a second melt is obtained after the zinc ingot is melted; adding hexachloroethane into the first melt, removing slag to obtain a third melt, and covering the liquid level of the third melt with a flux; adding rare earth elements into the third melt to obtain a fourth melt; a magnesium-zirconium intermediate alloy is added into the fourth melt, deslagging is conducted, a fifth melt is obtained, and the liquid level of the fifth melt is covered with a flux; the fifth melt is stirred, a flux is scattered on a liquid flow wave crest in the stirring process, deslagging and liquid surface covering with the flux are sequentially conducted, and a sixth melt is obtained; and the sixth melt is poured, and the magnesium-rare earth-zirconium magnesium alloy is obtained. Based on the process, the quality of the magnesium-rare earth-zirconium magnesium alloy can be improved.

The present invention relates to a method for electrochemically synthesizing chlorobromides. Specifically, under the action of an electric current, tetrabutylammonium bromide and hexachloroethane are used to generate two different halogen intermediates, which react with olefins to obtain chlorobromides. The present invention utilizes an inexpensive and readily available halogen source to produce a series of chlorobromides with high selectivity under simple and mild conditions.

The application relates to the technical field of neodymium-iron-boron magnet materials, in particular to a preparation method of neodymium-iron-boron magnetic powder, which comprises the following steps: preparing hydrogen explosion powder from neodymium-iron-boron raw materials; adding an antioxidant into the hydrogen explosion powder and uniformly mixing to obtain mixed coarse powder; wherein the components of the antioxidant include 5%-15% of hexachloroethane and the rest of at least one of aviation gasoline or monochlorobenzene; performing airflow mill treatment on the mixed coarse powder under oxygen-free condition to obtain intermediate powder; then adding a lubricant and uniformly stirring under a protective atmosphere to obtain neodymium-iron-boron magnetic powder; wherein the lubricant includes at least one of tributyl borate or methyl laurate. According to the preparation method, the antioxidant can wrap the fresh fracture of the mixed coarse powder in the instant of the breaking of the mixed coarse powder, so that the oxidation of the mixed coarse powder is limited to the maximum extent; meanwhile, the above-mentioned lubricant is added, the flowability of the prepared magnetic powder is effectively improved, and then the filling uniformity of the magnetic powder in the subsequent processing process and the rotation or movement in the orientation process are accelerated.

The utility model relates to a safe and environment-friendly hexachloroethane storage device, in particular to the technical field of storage devices. The utility model provides a safe environment-friendly hexachloroethane storage device which comprises a base, a protective frame, a protective door, a placing frame and placing frames, the protective frame is fixedly connected to the base, the protective door is hinged to the protective frame, the placing frame is fixedly connected into the protective frame, and a plurality of placing frames are evenly arranged on the placing frame at intervals in a sliding mode. The temperature in the placing frame is detected at any time through the detector, so that the detector starts the refrigerator through the controller, the refrigerating pipe emits cold air to cool the interior of the storage device, and the purpose of automatic cooling is achieved, so that the storage temperature is reduced, and pressure increase or other potential safety hazards caused by overheating are avoided.

The utility model relates to the technical field of hexachloroethane mixture purification, in particular to a hexachloroethane mixture purification device. The hexachloroethane mixture purifying device comprises a supporting seat, a supporting frame, heating pipes, a distillation retort, a liquid discharge pipe, a cover plate, a first liquid outlet pipe and a second liquid outlet pipe, the supporting frame is fixedly connected in the supporting seat, the heating pipes are arranged on the supporting frame, the distillation retort is fixedly connected in the supporting frame, and the liquid discharge pipe is arranged in the distillation retort. The bottom of the distillation retort is connected and communicated with a drain pipe, the top of the distillation retort is covered with a cover plate, the right side of the distillation retort is connected and communicated with a first liquid outlet pipe, and the left side of the distillation retort is connected and communicated with a second liquid outlet pipe. Through the arrangement of the temperature detector, the controller, the electric control valve and the like, a hexachloroethane mixture can be effectively purified through a distillation method, it is ensured that hexachloroethane is independently discharged through the second liquid outlet pipe, carrying of other substances is avoided, and therefore the purity and the separation effect of hexachloroethane are remarkably improved.

The present application relates to the technical field of aluminum alloy material, in particular to a high-temperature-resistant and high-strength aluminum alloy material and a preparation method thereof.The present application overcomes the problems of insufficient mechanical properties and poor high-temperature resistance of the existing aluminum alloy material.By introducing multiple synergistic strengthening elements, including copper, magnesium, scandium, zirconium, nickel, manganese and titanium, into the aluminum alloy matrix, and adding multiple layers of graphene nanosheets through step-by-step melting, under the protection of argon, the present application refines the grains through hexachloroethane refining and lithium salt complexing agent, and prepares a fusion alloy;combined with multi-stage fine melting, multi-stage heat treatment process, three-stage aging treatment and surface modification process, the microstructure is optimized and the surface performance is improved.The prepared aluminum alloy material significantly improves the mechanical properties, high-temperature resistance and surface oxidation resistance of the aluminum alloy through multi-element synergy and multi-process optimization, and is suitable for the field of aerospace.