142 results about "Phosphorus chloride" patented technology

The invention discloses a phosphorus trifluoride production device and method, and belongs to the technical field of phosphorus trifluoride production, the device comprises a reaction part, a pretreatment part and a post-treatment part, the reaction part comprises a first raw material tank, a second raw material tank, a reaction kettle and a collection cold trap, the pretreatment part comprises a primary separation tower and an absorption tower, and the post-treatment part comprises a secondary separation tower and an absorption tower. The post-treatment part comprises an adsorption tower, a light component removal tower and a heavy component removal tower; the production method comprises the following steps: adding raw materials of phosphorus trichloride and hydrogen fluoride into a reaction kettle to generate phosphorus trifluoride and hydrogen chloride, collecting the phosphorus trifluoride and hydrogen chloride in a collecting cold trap, heating the collecting cold trap to vaporize the phosphorus trifluoride and hydrogen chloride, and sequentially entering a primary separation tower, a light component removal tower and a heavy component removal tower for a series of treatment, and finally, high-purity phosphorus trifluoride gas is extracted from the heavy component removal tower to a filling system. According to the method, high-purity phosphorus trifluoride with the purity larger than or equal to 99.999% can be finally produced, and the problem that in the prior art, the purity of phosphorus trifluoride is not enough is solved.

The utility model relates to the field of phosphorus trichloride chemical industry, and discloses a phosphorus trichloride condensation recovery device which comprises a cooling main body used for providing cold air, a bearing plate is arranged below the cooling main body, a fixed support is arranged at the top of the bearing plate, a connecting support is arranged in the fixed support, the connecting support is rotationally connected with moving wheels, and the moving wheels are connected with the bearing plate. One end of the connecting support is rotationally connected with a rotating handle, a ventilation pipe is arranged on one side of the cooling body, one end of the ventilation pipe is fixedly connected with a sealing bin, a storage bin is arranged in the sealing bin, a plurality of sets of U-shaped ventilation pipes used for gas circulation are arranged in the storage bin, and a rotating impeller is arranged on one sides of the U-shaped ventilation pipes. One end of the rotary impeller is fixedly connected to an output shaft of a motor, so that the phosphorus trichloride condensation recovery device is provided, and the problems that the condensation effect is affected and the recovery rate of liquid phosphorus trichloride is reduced due to the fact that the existence of a gas layer possibly interferes with temperature distribution in a condenser and the temperature gradient is not uniform are solved.

The invention discloses a continuous cyclic preparation method of hexafluorophosphate. The method comprises the following steps: S1, preparation of a metal salt anhydrous hydrogen fluoride solution: adding anhydrous hydrogen fluoride and metal halide salt into a reaction kettle, and uniformly mixing, so that the metal halide salt is dissolved in the anhydrous hydrogen fluoride to obtain the metal salt anhydrous hydrogen fluoride solution; s2, preparing a hexafluorophosphate anhydrous hydrogen fluoride solution: adding phosphorus pentachloride into the reaction kettle under a temperature control condition for reaction; a hexafluorophosphate anhydrous hydrogen fluoride solution is obtained; and S3, separation of hexafluorophosphate: transferring the hexafluorophosphate anhydrous hydrogen fluoride solution into a drying tower for drying, condensing gasified anhydrous hydrogen fluoride at the top of the drying tower into liquid anhydrous hydrogen fluoride by a condenser, refluxing the liquid anhydrous hydrogen fluoride into the reaction kettle in the step S1, and collecting a hexafluorophosphate product at the bottom of the drying tower. The continuous cyclic preparation method of hexafluorophosphate has the characteristics of high raw material utilization rate, simple process and good production continuity.

The invention provides an imine lithium compound, a preparation method thereof and application of the imine lithium compound in a battery. The structural formula of the lithium imide compound is as shown in the formula I in the specification. The preparation method of the lithium imide compound comprises the following steps: adding sulfuryl fluoride, ammonia gas and an acid-binding agent, and carrying out ammonification reaction to obtain a first intermediate; adding phosphorus trichloride into the first intermediate, and carrying out phosphating reaction to obtain a second intermediate; adding ethylene glycol into the second intermediate for substitution reaction to obtain a third intermediate; and adding a lithiation compound into the third intermediate to carry out lithiation reaction. As a new substance, the lithium imide compound contains a fluorosulfonyl imide group and a cyclic phosphate group, has the advantages of cyclic phosphate, sulfonyl imide group and fluoro group, has a good application prospect, can be applied to a secondary battery, and can also be used as an intermediate for material and medicine processing. # imgabs0 #

The utility model relates to the technical field of phosphorus trichloride recovery equipment, and discloses a phosphorus trichloride gaseous cooling recovery device, which comprises a main body, a water inlet is fixedly connected below the front side of the main body, a water outlet is arranged below the water inlet, and the water inlet and the water outlet are convenient to supplement and discharge water for a water tank. And the lower surface of the main body is fixedly connected with four supports, and the number of the supports is four. Compared with the prior art, the cooling device has the following advantages and effects that through the arrangement of the first cooling pipe, the fins and the spraying mechanism, gaseous phosphorus trichloride is introduced by a worker and then cooled through the first cooling pipe, and then flows into the cooling branch pipes, the fins provide heat dissipation, and the spraying mechanism sprays water onto the fins to improve the heat dissipation effect; the wind power port blows air into the device, the water evaporation efficiency is improved, the heat dissipation effect of the fins is improved again, and the effect of improving the recovery efficiency is achieved through multiple-combination heat dissipation cooling.

The invention discloses a pure organic scintillator material and a preparation method and application thereof, and belongs to the technical field of organic photoelectric functional materials, and the pure organic scintillator material provided by the invention is obtained by taking diphenyl phosphorus chloride as a raw material through two-step reaction and crystal culture. The preparation method has the advantages of mild reaction conditions, simple synthesis, cheap raw materials, easy product purification and the like, and provides a new idea for preparing the organic scintillator. A pure organic scintillator material is ground and then doped with polyvinyl alcohol to prepare the scintillation screen, and the prepared scintillation screen has the advantages of radiative brightness, high imaging resolution, low detection limit, bendability, crimpability and the like, and successfully realizes static, curved, three-dimensional and dynamic X-ray imaging.

The invention discloses a phosphorus pentachloride synthesis reactor and a continuous synthesis system and method.The phosphorus pentachloride synthesis reactor comprises a reactor body, a nozzle arranged at the top of the reactor body and at least one nozzle set arranged on the side portion of the reactor body, and each nozzle set comprises at least two nozzles; the distance between the top of the reactor body and the adjacent nozzle group is 3-5 times of the inner diameter of the reactor body; the multiple nozzles are arranged on the reactor body in a layered mode, the distribution uniformity of materials in the space of the reactor body is improved, then the heat exchange effect of the materials and heat exchange media is improved, a high-temperature area in the reactor body is reduced or eliminated, and in some embodiments of the invention, the temperature in the reactor can be controlled within 50-70 DEG C.

The present invention provides an automatic control method for a continuous automatic production device of phosphorus pentafluoride, comprising the following steps: S10, opening the first pipeline to fill the cartridge with an inert gas, and opening the first air outlet to discharge the residual air and water vapor in the cartridge; S11, after closing the first pipeline and the first air outlet, feeding through the feed inlet, and closing the feed inlet after the feeding is completed; S12, opening the second pipeline to fill each weighing and conveying bin with an inert gas, and opening the exhaust port to discharge the residual air and water vapor in the weighing and conveying bin, and closing the second pipeline and the exhaust port; S13, opening the feed valve and the weighing and conveying unit to weigh phosphorus pentachloride and then feed it, and simultaneously opening the hydrogen fluoride supply tank to feed anhydrous HF, wherein the phosphorus pentachloride and the fluoride are fed in proportion.

The utility model relates to the technical field of phosphorus trichloride hydrolysis, in particular to a phosphorus trichloride hydrolysis reaction device. According to the technical scheme, the device comprises a hydrolysis box, a liquid inlet valve is fixedly installed on one side of the upper surface of the hydrolysis box, a uniform distribution pipe is fixedly connected to the end, located in the hydrolysis box, of the liquid inlet valve, a liquid outlet is formed in the lower surface of the uniform distribution pipe, and a second porous flow equalizing plate is fixedly installed in the uniform distribution pipe; a circulating water pump is fixedly mounted on the side, close to the liquid inlet valve, of the lower surface of the hydrolysis tank, a water supply pipe is fixedly connected to the tail end of an output pipe of the circulating water pump, the tail end of the water supply pipe is fixedly connected to the side, close to the liquid inlet valve, of the hydrolysis tank, and an inclined plate is fixedly mounted in the hydrolysis tank and close to the upper surface. In the phosphorus trichloride hydrolysis process, phosphorus trichloride is added into flowing water flow, heat accumulation in the hydrolysis reaction is avoided, and therefore potential safety hazards are eliminated.

The present invention discloses a method for preparing anhydrous iron phosphate from medium and low grade phosphate rock, which comprises the following steps: Step 1: Provide medium and low grade phosphate rock; Step 2: Mix the phosphate rock with hydrochloric acid in a decomposition tank and fully react to obtain a first slurry; Step 3: Place the first filtrate into a sedimentation tank; Step 4: Add mixed acid to calcium dihydrogen chloride phosphate crystals, carry out pulping and filtration to obtain a second filtrate and a filter cake; Step 5: Finally, filter to obtain a gypsum product and a third filtrate; Step 6: The third filtrate in Step 5 is purified with saturated ferrous sulfate. The fourth filtrate obtained through a microfilter is continuously added with a saturated ferrous sulfate solution, then continuously added with 5-25% hydrogen peroxide, reacted for 5-35 minutes, then added with sodium hydroxide solution to adjust the pH value to 1.9-2.1, and kept warm and continuously reacted for 3-6 hours, and the iron phosphate obtained by filtration; Step 7: Dry the iron phosphate obtained in Step 6 at 150-170 °C to obtain anhydrous iron phosphate.

This invention discloses a tail gas treatment absorption tower for phosphorus trichloride production. The invention relates to the technical field of tail gas treatment absorption towers and includes a shell. An annular plate is fixedly connected to the inner wall of the shell near the inlet pipe. The annular plate has a trapezoidal cross-section and multiple through holes in its center. Multiple elastic plates are symmetrically arranged inside each through hole, with two elastic plates forming a group. Within each group, two elastic plates are symmetrically arranged inside the through hole, and the elastic plates are inclined, forming a V-shape. In this phosphorus trichloride tail gas treatment absorption tower, the inlet pipe is tangentially oriented. This tangential inlet causes the tail gas to form a spiral upward airflow along the inner wall of the tower. The gas is further diverted through the evenly distributed through holes on the annular plate, thereby improving the uniformity of the gas flow velocity entering the bottom of the packing layer, ensuring no dead zones in gas-liquid contact, and extending the gas flow path within the tower.

The invention discloses a method for preparing cyclopropanecarboxylic acid by using phosphorus trichloride as a chlorination reagent, and belongs to the technical field of medicines and pesticides, the method comprises the following steps: adding cyclopropanecarboxylic acid into a reactor, starting stirring, heating to the reaction temperature of 40-60 DEG C, introducing nitrogen to carry out nitrogen replacement, carrying out nitrogen sealing in the whole process, starting dropwise adding phosphorus trichloride, controlling the dropwise adding speed, and reacting for 1-2 hours; the temperature of the reaction system is maintained at the reaction temperature, and the fluctuation temperature does not exceed + / -2 DEG C; after the dropwise adding of the phosphorus trichloride is finished, continuously carrying out heat preservation reaction for 0.5-2 hours, and then standing and separating the reaction liquid to obtain an upper layer which is a cyclopropanecarbonyl chloride crude product; and distilling the crude product of cyclopropanecarbonyl chloride to obtain a refined product of cyclopropanecarbonyl chloride. The method provided by the invention solves the problems of low chlorine atom utilization rate, incomplete catalysis of the adopted catalyst, easy generation of impurities, generation of toxic by-products sulfur dioxide and carbon monoxide, great threat to the environment, and three-waste emission in the existing acyl chloride preparation method.

The utility model discloses a phosphorus pentafluoride generating system for a lithium hexafluorophosphate generator. The phosphorus pentafluoride generating system comprises a phosphorus pentafluoride generator, a phosphorus pentachloride feeding valve, a phosphorus pentafluoride reaction valve, a phosphorus pentafluoride feeding valve and a feeding emptying valve, one end of the phosphorus pentachloride feeding valve is connected to a phosphorus pentachloride positive pressure sending tank through a pipeline, the other end of the phosphorus pentachloride feeding valve is connected to one end of the phosphorus pentafluoride reaction valve through a pipeline, and the other end of the phosphorus pentafluoride reaction valve is connected to a feeding port of the phosphorus pentafluoride generator; a discharge port of the phosphorus pentafluoride generator is respectively connected to one end of the phosphorus pentafluoride feeding valve and one end of the feeding emptying valve through pipelines, the other end of the phosphorus pentafluoride feeding valve is connected to the lithium hexafluorophosphate generator through a gas filter, and the other end of the feeding emptying valve is connected to a tail gas collecting device through a pipeline. According to the utility model, the feeding misoperation can be eliminated, the feeding safety is ensured, and the feeding can be controlled to be correct.

The invention discloses an efficient recycling method for a ternary positive electrode material of a lithium ion battery based on a deep-eutectic solvent, and belongs to the technical field of recycling of waste lithium ion batteries. The method mainly comprises the following steps: mildly stripping a ternary positive plate obtained by disassembling in a first DES stripping solvent prepared from benzyl triphenyl phosphorus chloride and octanoic acid, washing, drying, crushing, screening and grinding to obtain ternary positive fine powder; and efficiently leaching the ternary positive electrode fine powder by using a second DES leaching solvent prepared from acetamide and sulfamic acid. According to the method, a novel eutectic solvent is adopted to achieve lossless stripping of the waste ternary positive electrode material and the current collector, another novel eutectic solvent is used to achieve efficient leaching of valuable metal in the ternary positive electrode material, and the purposes that the whole process is environmentally friendly, low in consumption, high in metal recovery rate and excellent in performance of a re-prepared battery are achieved.

The invention discloses an antioxidant high-strength glass fiber, and relates to the technical field of glass fibers. According to the invention, the glass fiber is taken as a raw material, silver plating treatment, deposition treatment, copper plating treatment and spraying treatment are carried out in sequence to obtain a foam conductive network structure containing piezoelectric particles, sound can be converted into current, then the current is converted into heat energy, and the heat energy is dissipated, so that the glass fiber has sound insulation and damping properties; 2 '-hydroxy-4' (3-methyl-2-butenyloxy) acetophenone, 2, 3-dihydroxy-4-ethoxybenzaldehyde, phosphorus trichloride and decanoic acid are used for further modification, so that the surface has oxidation resistance, and hydrolysis is effectively resisted. The anti-oxidation high-strength glass fiber prepared by the invention has the effects of sound insulation, damping and long-acting oxidation resistance.

The application discloses a high-elongation-strength anti-fatigue TPU blended material and a preparation method thereof, and relates to the field of polymer materials. In the preparation of the high-elongation-strength anti-fatigue TPU blended material, phosphorus chloride is reacted with 4'-vinyl-[1,1'-biphenyl]-4-alcohol and p-phenylphenol to obtain a phosphite antioxidant; nano-silicon dioxide is sequentially reacted with trimethoxysilane and the phosphite antioxidant to obtain modified silicon dioxide; a modified polyurethane elastomer is prepared by reacting hydroxyl-terminated polysiloxane, 1,4-butanediol, isophorone diisocyanate and adipic dihydrazide; polyether amide elastomer and the modified polyurethane elastomer are mixed, mixed with a compatilizer, modified silicon dioxide and antioxidant 1010, dried, mechanically mixed, and melt-blended to obtain the high-elongation-strength anti-fatigue TPU blended material. The high-elongation-strength anti-fatigue TPU blended material prepared by the application has the abilities of self-repairing, durability and flame resistance.

The invention relates to the technical field of synthesis of chlorine-containing pyridine intermediates, and discloses a method for synthesizing 2, 3, 4, 5-tetrachloropyridine by using 2, 5-dichloropyridine, which comprises the following steps: step 1, preparation of 2, 5-dichloropyridine nitrogen oxide: taking 2, 5-dichloropyridine as a raw material, reacting in the presence of a catalyst and acetic acid, and then filtering to remove the catalyst to obtain 2, 5-dichloropyridine nitrogen oxide; adding an acetic acid solution of 2, 5-dichloropyridine nitrogen oxide; step 2, nitration reaction: adding sulfuric acid and nitric acid, and reacting to obtain 2, 5-dichloro-4-nitropyridine nitrogen oxide; step 3, nitrogen and oxygen removal reaction: adding acetyl chloride to replace 4-position nitro to obtain 2, 4, 5-trichloropyridine nitrogen oxide, and then adding phosphorus trichloride to remove nitrogen and oxygen to obtain 2, 4, 5-trichloropyridine; and 4, chlorination and refining: adding Lewis acid into the 2, 4, 5-trichloropyridine, reacting to obtain a 2, 3, 4, 5-tetrachloropyridine crude product, and refining the crude product to obtain the finished product 2, 3, 4, 5-tetrachloropyridine. The invention solves the problems of more byproducts and unsatisfactory product purity and yield in the prior art.

The utility model discloses an automatic reduction device for vaporizing phosphorus trichloride and premixing the vaporized phosphorus trichloride with hydrogen in proportion, relates to the technical field of compound reduction reaction devices, and aims to solve the problem of low yellow phosphorus yield caused by insufficient reduction reaction of phosphorus trichloride and hydrogen. According to the device, an automatic parameter control cabinet is electrically connected to an automatic reduction device, the bottom end of a first reaction kettle is communicated with a hydrogen inlet pipeline through a pipeline, a hydrogen premixing and dispersing device is arranged at the bottom in a cavity of the first reaction kettle, and a plurality of premixing and heating devices are arranged on the outer wall of the first reaction kettle; the top end of the first reaction kettle is connected with a premixing gas-liquid separator through a pipeline, the premixing gas-liquid separator is mounted in a cavity of the second reaction kettle, and one side of the bottom of the first reaction kettle is connected with the second reaction kettle through a pipeline provided with a stop valve; the bottom end of the second reaction kettle is communicated with a phosphorus trichloride liquid inlet pipeline through a pipeline, and the top end of the second reaction kettle is connected with a premixed gas reduction pipeline.

The invention relates to the technical field of thermal transfer ribbons, and discloses an efficient thermal transfer ribbon back coating adhesive and a preparation method thereof.The efficient thermal transfer ribbon back coating adhesive is prepared through the steps that tetrakis (hydroxymethyl) phosphorus chloride, vinyl trichlorosilane and 2, 5-bis (trifluoromethyl) terephthalic acid are used as raw materials to synthesize a dialkenyl fluorine-containing cage-shaped siloxane monomer, the dialkenyl fluorine-containing cage-shaped siloxane monomer and pentaerythritol tetraacrylate are subjected to initiated polymerization, and the efficient thermal transfer ribbon back coating adhesive is obtained; the cross-linked organic silicon acrylic acid copolymer with a similar hyperbranched cross-linked network structure is formed to replace a traditional organic silicon resin mixture and is diluted by single-solvent methylbenzene, use of a multi-component mixed solvent is avoided, VOC emission is greatly reduced, and recycling can be achieved; the thermal transfer ribbon back coating adhesive prepared by the invention has the advantages of favorable heat resistance, favorable wear resistance, smooth printing and favorable adhesive property, can enhance the heat conduction and lubrication effects in the printing process, effectively eliminates the electrostatic risk generated in the actual application process, has favorable flame-retardant effect, and avoids the potential safety hazard.

The application discloses a phosphorus pentachloride feeding station, which comprises a feeding station frame; the feeding station frame is divided into a guide rail support, a waste bag collecting chamber, a unpacking chamber and a feeding chamber; the guide rail support is located at the top of the feeding station frame and is provided with a baffle on the bottom surface; the waste bag collecting chamber, the feeding chamber and the unpacking chamber are communicated with each other and are arranged in sequence from left to right and directly below the guide rail support; the whole conveying, unpacking and waste bag collecting of the application are in a closed space, so that harmful gas generated by unpacking and feeding is prevented from being discharged outside.

The utility model discloses a kind of even feeding devices for phosphorus pentachloride production, it is related to phosphorus pentachloride production technical field, including base, the top of base both ends is fixedly connected with U-shaped support seat, the top of base one end is fixedly connected with L-shaped support plate, both ends The top of U-shaped support seat is fixedly connected with heat-insulating jacket device, the inner side wall top of heat-insulating jacket device is fixedly connected with storage bin between, the bottom output end of storage bin is fixedly connected with electric valve, the other end of electric valve is fixedly connected with buffer tank, the base provided in the utility model, on the basis of realizing heat preservation protection to avoid affecting even feeding, increase inert gas protection to avoid causing metamorphosis simultaneously, to solve the temperature of the existing phosphorus pentachloride production feeding device is difficult to control due to lack of effective heat preservation structure, and lack of inert gas protection causes security and metamorphosis problem.

The utility model provides a phosphorus trichloride tail gas absorption device which comprises a box body and a cover plate, the cover plate is rotatably connected to the upper end of the box body through a rotating shaft, the upper end of the cover plate is fixedly connected with a water pump, the side end of the box body is fixedly connected with a water storage tank, and the upper end of the water storage tank is fixedly connected with a vertical pipe. The upper end of the vertical pipe is fixedly connected with a cooling box, a water pipe is connected between the water pump and the cover plate, and a water diversion pipe is connected between the water pipe and the cooling box. Through the cooling pipe and the filtering absorber in the cooling box, the temperature of phosphorus trichloride tail gas can be effectively reduced, harmful substances in the tail gas can be removed, the purification effect is remarkable, pollution to the environment is reduced, and safety of surrounding personnel and equipment is guaranteed.

The utility model discloses phosphorus pentachloride anti-caking storage equipment which comprises supporting legs and a storage tank arranged on the supporting legs, the phosphorus pentachloride anti-caking storage equipment further comprises a heat dissipation assembly arranged in the storage tank, a storage cavity and a preparation cavity are sequentially arranged in the storage tank from top to bottom, the storage cavity and the preparation cavity are communicated through a discharging pipe, and the storage cavity is communicated with the preparation cavity. A first valve is arranged on the discharging pipe, the preparation cavity is communicated with the outside through a discharging pipe, a second valve is arranged on the discharging pipe, a flow dividing pipe, a first air inlet pipe, a first exhaust pipe, a second air inlet pipe and a second exhaust pipe are arranged on the storage tank, the first air inlet pipe is arranged on the storage tank and communicated with the storage cavity, and the second air outlet pipe is arranged on the storage tank and communicated with the storage cavity. A third valve is arranged on the first air inlet pipe, and the flow dividing pipe is arranged on the first air inlet pipe. The utility model relates to the technical field of phosphorus pentachloride storage, in particular to phosphorus pentachloride anti-blocking storage equipment which is not prone to being affected with damp, facilitates heat dissipation and is better in heat dissipation effect.

This invention discloses a chiral monophosphine ligand, its preparation method, and its application in asymmetric synthesis. The ligand preparation method involves mixing an N,N',1,2-tetrasubstituted ethane-1,2-diamine compound, phosphorus trichloride, triethylamine, and solvent under a nitrogen or argon atmosphere at -80 to -70°C, and reacting at 60 to 80°C for 6 to 8 hours. The resulting reaction mixture is then cooled to room temperature, and an alcohol, phenol, or Grignard reagent is added dropwise, reacting at 60 to 80°C for 8 to 12 hours. The resulting mixture is then post-treated to obtain the chiral monophosphine ligand. The application involves stirring a nickel catalyst, a chiral monophosphine ligand, a solvent, a diene, and an aldehyde under an argon or nitrogen atmosphere at a specified temperature for 12 to 15 hours. The mixture is then post-treated to obtain the target product. This method utilizes widely available and inexpensive raw materials, and the operation is simple, achieving high stereoselectivity and enantioselectivity in the synthesis of alcohol compounds containing chiral conjugated dienes through a one-step reaction.

The utility model relates to the technical field of phosphorus pentachloride production devices, in particular to a phosphorus pentachloride production device which comprises a reaction box and a cover body covering the upper end of the reaction box, a stirring assembly is arranged on the cover body, and a filtering unit is arranged at the upper end of the cover body. The filtering unit comprises a shell and a Z-shaped plate, the shell is fixedly connected with the cover body, the Z-shaped plate is fixed with the shell through a fixing assembly, and a chlorine supply assembly is arranged on the lower side of the reaction box. Meanwhile, chlorine is continuously conveyed into the reaction box through the chlorine supply assembly and filtered through the filtering unit, a Z-shaped plate sealing structure is adopted, when activated carbon in a filtering frame is replaced, the lower side plate face of a Z-shaped plate can automatically seal the reaction box, chlorine leakage is effectively prevented, and the safety and operation convenience of the device are remarkably improved.

The invention discloses a corrosion-resistant PEEK filler material for a rectifying tower and a production method and application of the corrosion-resistant PEEK filler material, and relates to the technical field of engineering plastic production, the production method of the corrosion-resistant PEEK filler material for the rectifying tower comprises the following steps: step 1, preparing a flame retardant; step 2, preparing an antioxidant; 3, high-temperature mixing treatment; step 4, banburying treatment; the workblank engineering plastic is added into a screw extruder to be melted and extruded, the PEEK material is obtained, and the first step comprises the following steps that A1, 26 w% of phenyl phosphorus dichloride, 25 w% of calcined kaolin and 12 w% of m-xylylenediamine are jointly dissolved in a solvent; through the design of the step A1 and the step A2, the flame retardant can be prepared, and in the high-temperature mixing treatment process, the flame retardant is fused into the PEEK filler material, so that the PEEK filler material has relatively good flame retardance, the problem of further spreading of fire can be avoided when a fire disaster occurs, and the property safety of a user is guaranteed.

The invention discloses phosphorus pentachloride production equipment and a production process thereof, and relates to the technical field of phosphorus pentachloride production.The phosphorus pentachloride production equipment comprises a reaction kettle, an air supply device and a liquid storage tank are arranged on the outer side of the reaction kettle, a motor is fixedly connected to the bottom of the reaction kettle, and an output shaft of the motor is fixedly connected with a stirrer; according to the device, phosphorus trichloride introduced into the reaction kettle is uniformly distributed through the four nozzles which are annularly distributed, phosphorus trichloride liquid is introduced by utilizing the nozzles annularly distributed on the side wall of the inner cavity of the reaction kettle, and in the process of introducing phosphorus trichloride, the nozzles are periodically oriented in cooperation with pushing and extruding of a triggering rod on an inclined plate, so that the phosphorus trichloride is uniformly introduced into the reaction kettle; the phosphorus trichloride falls into the reaction kettle from four points, compared with single-point pipeline conveying, the problem that the concentration of the phosphorus trichloride is enriched near a conveying pipeline due to long-time single-point conveying of the phosphorus trichloride can be avoided, distribution of the phosphorus trichloride can be further enhanced in cooperation with synchronous operation of a stirrer, and the subsequent mixing effect of the phosphorus trichloride and chlorine is improved.

The invention belongs to the technical field of preparation of aluminum-containing compounds, and particularly discloses a method for preparing aluminum hydroxide with high specific surface area based on sodium tetrachloroaluminate. The preparation method comprises the following steps: mixing a sodium tetrachloroaluminate raw material (sodium tetrachloroaluminate solid waste residue as a byproduct in production of glufosinate-ammonium or methyl phosphorus dichloride) with water to obtain a mixed solution; mixing the mixed solution with alkali liquor, and reacting to obtain reaction liquid containing aluminum hydroxide; and sequentially aging, separating and washing to obtain the aluminum hydroxide with high specific surface area. The obtained aluminum hydroxide is a porous material, the specific surface area reaches 300 m < 2 > / g or above, the microstructure is a sheet / block nanoparticle combination, and the aluminum hydroxide has good dispersity and activity and can be used in the fields of catalyst carriers, adsorbents, flame retardants and the like. The method is simple in process and does not involve complex equipment and high energy consumption conditions; and when the treated object is industrial solid waste residue, the method has the advantages of high aluminum recovery rate, thorough impurity removal and no influence of phosphorus.

The invention relates to the technical field of pesticide production, in particular to a glyphosate technical production system, which comprises a phosphorus trichloride process, a dimethyl phosphite process and a glyphosate process, and specifically comprises the following steps: S1, introducing chlorine into a chlorination kettle filled with yellow phosphorus, controlling the reaction temperature to obtain gas-phase phosphorus trichloride, and removing phosphorus to obtain liquid-phase phosphorus trichloride; s2, methanol and liquid-phase phosphorus trichloride are introduced into an esterification kettle for an esterification reaction, an esterification reaction material and esterification tail gas are obtained, and dimethyl phosphite is obtained after deacidification; and S3, adding paraformaldehyde into the synthesis kettle, adding methanol and triethylamine, heating, sequentially adding glycine, dimethyl phosphite and the composite catalyst, stirring for reaction, and dealcoholizing to obtain the solid glyphosate. The purity and yield of glyphosate are remarkably improved by controlling the feeding proportion and reaction conditions of the raw materials and using the composite catalyst.