84 results about "Phosphorus chloride" patented technology

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.

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 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 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 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 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 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.

This utility model discloses a phosphorus trichloride tail gas absorption device, belonging to the technical field of phosphorus trichloride tail gas absorption devices. Key technical features include a support frame, with a cooling component fixedly connected to the top of the support frame. A spray device body is bolted inside the cooling component. A drying component is connected to the right side of the cooling component, and a purification component is connected to the right side of the drying component. The cooling component includes a tank, with an air inlet pipe connected to the inner wall of the tank. A first solenoid valve is connected to the top of the air inlet pipe, and a protective cover is fixedly connected to the top of the first solenoid valve. This invention addresses the problem that most existing phosphorus trichloride tail gas absorption devices initially pre-treat phosphorus trichloride tail gas through spraying. However, some phosphorus trichloride tail gas has a certain temperature, which may cause steam to be generated during the spraying process. This steam may affect the operation of subsequent structures.

The invention discloses a system and a method for cleaning a chlorination kettle for phosphorus trichloride production, the system comprises a chlorination kettle, the chlorination kettle is provided with a chlorine feeding pipeline, a yellow phosphorus feeding pipeline and a discharging pipeline, and the discharging pipeline is connected with a feeding port of a primary filtering device through a first material pump; a liquid phase outlet of the first-stage filtering device is connected with a feeding hole of the second-stage filtering device, and a solid phase outlet of the first-stage filtering device is connected with a feeding hole of the third-stage filtering device; a liquid phase outlet of the second-stage filtering device is connected with an inlet of the first-stage buffer tank, and a solid phase outlet of the second-stage filtering device is connected with a feeding hole of the third-stage filtering device; a liquid phase outlet of the third-stage filtering device is connected with a feeding hole of the first-stage filtering device, and a solid phase outlet of the third-stage filtering device is connected with an inlet of the second-stage buffering tank; an outlet of the primary buffer tank is connected with a feeding hole of the phosphorus washing tower through a second material pump; and the discharge hole of the phosphorus washing tower is connected with the reflux inlet of the chlorination kettle through a reflux pipeline. The method avoids the risks of byproduct acid generation, hydrogen accumulation, yellow phosphorus spontaneous combustion and the like, is high in efficiency and is suitable for industrial continuous production.

A method for preparing a phosphorus-containing ligand is provided, which includes: mixing a phosphorus chloride compound, polypyridine ionic liquid-loaded porous microspheres with a first organic solvent to obtain a first mixture, and mixing a compound in Formula (2) with a second organic solvent to obtain a second mixture,wherein Z is a multivalent aliphatic hydrocarbon group or a multivalent aromatic hydrocarbon group comprising at least one substituent group, wherein the substituent group is selected from hydrogen atom, halogen atom, C1-C10 alkyl group, C1-C10 alkoxy group, C1-C10 alkanoyl group, aryl group, heteroaryl group, cyano group, or nitro group, and n is an integer from 1 to 8; and mixing the first mixture with the second mixture to make the first mixture react with the second mixture to obtain a reaction mixture, removing generated HCl, filtrating to obtain a filter liquor, and treating the filter liquor to obtain the phosphorus-containing ligand.

The invention provides a phosphorus pentafluoride gas generator which comprises a generator cylinder, a distribution disc, a first feeding port, a second feeding port, a valve assembly and a discharging port, and a containing cavity is formed in the generator cylinder; the distribution disc divides the accommodating cavity into an upper cavity body and a lower cavity body, and the distribution disc is provided with a through hole for communicating the upper cavity body with the lower cavity body; the first feeding hole is used for conveying phosphorus pentachloride solids to the lower cavity; the second feeding hole is used for conveying hydrogen fluoride liquid to the upper cavity; the valve assembly is used for opening or closing the through hole; when the through hole is opened, the hydrogen fluoride liquid in the upper cavity can enter the lower cavity through the through hole; the discharge hole is formed in the generator cylinder and is used for conveying phosphorus pentafluoride gas generated by reaction in the lower cavity to the outside of the generator cylinder. The through hole can be opened or closed through the valve assembly according to needs so as to control the intensity of the reaction, the temperature and pressure in the lower cavity are prevented from being too high, the sublimation and blockage risks of phosphorus pentachloride are reduced, and the production efficiency of phosphorus pentafluoride gas is improved.

An apparatus for purifying high-purity phosphorus trifluoride according to one embodiment of the present invention comprises: a phosphorus trifluoride production unit including a reactor in which a phosphorus chloride compound solution and a metal fluoride salt react, and a purge device for vacuum-purging the reactor; a first freezing unit for cooling a phosphorus trifluoride mixed gas obtained from the phosphorus trifluoride production unit to remove unreacted materials contained in the phosphorus trifluoride mixed gas; and a second freezing unit for cooling the phosphorus trifluoride mixed gas obtained from the first freezing unit with liquid nitrogen to remove purge gas and hydrogen chloride (HCl).

The utility model discloses a chlorination kettle for producing phosphorus trichloride, which comprises support legs, a kettle body, a kettle cover and a stirring component, and further comprises a protective shell, the protective shell is sleeved outside the kettle body, a plurality of groups of springs and connecting support columns are fixedly connected between interlayers of the kettle body and the protective shell, the support legs are arranged on the protective shell, and the stirring component is arranged on the support legs. The kettle cover is detachably arranged on the kettle body, and the stirring assembly is arranged on the kettle cover; the stirring assembly comprises a driving shaft, a sleeve shaft, a stirring rod and a stirring blade, the sleeve shaft is rotatably arranged on the kettle cover and extends downwards into the kettle body, the stirring rod is arranged on the sleeve shaft, a mounting seat is arranged on the kettle cover, and the driving shaft is rotatably arranged on the mounting seat and rotatably penetrates through the sleeve shaft. The utility model relates to the technical field of phosphorus trichloride processing auxiliary devices, and particularly provides a chlorination kettle for producing phosphorus trichloride, which is better in stirring effect, higher in safety and convenient to clean and has a gas purification function.

The application provides benzyl alcohol modified humic acid and a preparation method and application thereof, and belongs to the oil displacement technical field. The preparation method comprises the following steps: mixing humic acid and deionized water to obtain a mixture I, adding acid KMnO4 to the mixture I after heating and temperature rising to an oxidation reaction temperature, and performing an oxidation reaction after heat preservation; after the oxidation reaction is completed, washing, centrifugation and freeze-drying are performed to obtain oxidized humic acid; the oxidized humic acid is mixed with a solvent to obtain a mixed solution; the benzyl alcohol, phosphorus trichloride and the solvent are mixed, a catalyst is added, the mixed solution is added, and temperature rising is performed to perform a reaction; after the reaction is completed, rotary evaporation, washing, standing, filtration and drying are performed to obtain benzyl alcohol modified humic acid. Humic acid is selected as a raw material to perform a first step of oxidation reaction, and a second step of modification of the oxidized humic acid by using benzyl alcohol is performed to prepare a kind of benzyl alcohol modified humic acid with a condensed polycyclic aromatic ring structure, which is an oil-soluble surfactant at normal temperature and is changed into a water-soluble surfactant according to the change of the formation environment.

The utility model relates to the technical field of phosphorus trichloride production, and discloses a kettle washing device for phosphorus trichloride production, which comprises a reaction kettle main body, the reaction kettle main body comprises a shell, the inner wall of the shell is fixedly connected with an inner container, the arrangement of the reaction kettle main body can isolate internal and external environments and protect workers, and a heating oil cavity is arranged between the shell and the inner container. A heating wire is arranged in the heating oil cavity, and the heating oil cavity and the heating wire are arranged, so that a relatively high temperature can be provided for kettle washing, and the kettle washing effect is improved. The reaction kettle disclosed by the utility model has the following advantages and effects that through the arrangement of the reaction kettle main body, the cleaning stirrer and the cleaning liquid inlet end, a worker firstly starts the pump communicated with the cleaning liquid inlet end to inject cleaning liquid into the reaction kettle main body, and starts the motor to enable the scraper, the brush and the cleaning brush on the cleaning stirrer to clean the interior of the reaction kettle main body; the kettle washing can be completed by matching with cleaning liquid, and the effects of simple structure and convenience in operation are achieved.

The invention discloses phosphorus pentachloride production equipment and a production process thereof, relating to the technical field of phosphorus pentachloride production. The equipment comprises a reactor, wherein an air supply device and a liquid storage tank are provided on the outside of the reactor, a motor is fixedly connected to the bottom of the reactor, and an agitator is fixedly connected to the output shaft of the motor. Four nozzles arranged in an annular manner ensure that the phosphorus trichloride introduced into the reactor is evenly distributed. The device introduces phosphorus trichloride liquid by using the nozzles annularly distributed on the side wall of the inner cavity of the reactor. During the process of introducing the phosphorus trichloride, the nozzles cooperate with a trigger rod to push an inclined plate, so that the directions of the nozzles are periodically changed, so that the phosphorus trichloride falls into the interior of the reactor from four points. Compared with single-point pipeline transportation, the device can avoid the problem of phosphorus trichloride concentration enrichment near the transportation pipeline caused by long-term single-point transportation of phosphorus trichloride. Synchronous operation of the agitator can further enhance the distribution of the phosphorus trichloride and improve the subsequent mixing effect with chlorine.

A method for producing phosphorus trifluoride by reacting a metal fluoride, a phosphorus chloride compound, and a solvent according to the present invention uses a continuous production device including a screw reactor to produce phosphorus trifluoride, and thus can continuously mass-produce high-purity phosphorus trifluoride, has excellent selectivity for phosphorus trifluoride, and can reduce production costs and energy, thus being economical.

The utility model discloses a kind of arsenic impurity adsorption removal devices in phosphorus trichloride production, belong to chemical purification equipment technical field, including the mixing bucket for phosphorus trichloride mixture storage, the outer periphery of the mixing bucket is connected with two discharge outlets for phosphorus trichloride mixture flow, the end portion of two the discharge outlet away from mixing bucket is connected with self-adapting sealing pipe, the vertical inner wall of the self-adapting sealing pipe is fixedly connected with support frame, the side surface of the support frame is installed with hollow column, the inside of the hollow column is connected with spring, one end of the spring is connected with moving disc, the end of moving disc away from spring is connected with connecting column, the moving disc is slidably arranged in the inside of hollow column, the device utilizes double-path design, avoids single-path adsorption device production interruption when replacing adsorption material, significantly improves the continuous operation ability of device, improves production efficiency.

The invention relates to the field of synthesis of organic small molecule compounds, in particular to a production process of triethyl phosphate. The production process of triethyl phosphate provided by the invention comprises the following steps: firstly adding a phosphorus trichloride mother solution into a loop reactor, preheating, continuously injecting molten yellow phosphorus into the loop reactor under hot water pressure feeding, and simultaneously continuously introducing dry chlorine according to a ratio; mild reaction is carried out under the conditions of circulation mixing and external circulation cooling at 76-90 DEG C and 0-20 kPa; and removing entrained free phosphorus from gas-phase phosphorus trichloride generated by the reaction through a phosphorus washing tower, cooling in a condenser, and obtaining a finished product from condensate according to a reflux ratio of (2-4): 1. According to the invention, the free phosphorus in the finished product is stably reduced to be less than or equal to 5ppm through a coupling process of circulation reaction, external circulation cooling and reflux washing of the phosphorus washing tower, so that the safety risk caused by high temperature, high pressure and blockage of a phosphorus pool is eliminated.

This invention relates to the field of water pollution control technology, specifically to a deep purification device and method for phosphorus trichloride production wastewater. It includes a sedimentation tank body, which is square and has an inlet pipe with an inlet valve at its bottom. In this invention, after chemical sedimentation within the sedimentation tank, a lifting adsorption mechanism is used to precisely position a liftable activated carbon layer at the interface between the clear liquid and the sedimentation layer after adsorbing suspended solids in the upper layer of clear liquid, forming a physical isolation barrier. Then, air flotation is used for secondary purification of the upper clear liquid. The activated carbon layer not only prevents the sediment from being disturbed and floating during the subsequent air flotation process but also provides a stable purification zone for the upper air flotation component. Simultaneously, the air flotation generating pipe is arranged above the activated carbon layer to avoid direct impact of air bubbles on the activated carbon layer, ensuring the structural integrity and durability of the adsorption layer. Thus, chemical sedimentation, activated carbon adsorption, and air flotation separation are achieved in a single sedimentation tank.

The application relates to a PPS solid-supported ionic liquid fiber catalyst, a preparation method and application of the PPS solid-supported ionic liquid fiber catalyst in catalytic synthesis of TCPP flame retardant, and mainly comprises the following steps: one, preparation of quaternary aminated polyphenylene sulfide fiber (PPS): quaternary ammonium PPS fiber is obtained after reaction of tertiary amine and chloromethylated PPS fiber; two, reaction of the quaternary ammonium PPS fiber and ZnCl2 to obtain a PPS solid-supported ionic liquid catalyst; three, catalytic synthesis of TCPP flame retardant: after reaction of phosphorus trichloride or phosphorus oxychloride and an epoxide compound by using the fiber catalyst, reaction TCPP flame retardant is obtained through vacuum concentration. The application not only can quickly take out the catalyst, recycle the catalyst, save the cost, avoid a complicated catalyst removal process, but also purifies the product through the vacuum concentration method, avoids complicated and environment-pollution-easy steps such as alkali washing and water washing, and has good industrial application value.

The utility model discloses a novel phosphorus pentachloride reaction device, which belongs to the technical field of phosphorus pentachloride production and comprises a kettle main body, a reaction cavity is arranged in the kettle main body, the top end of the reaction cavity is connected with a driving top frame, the reaction cavity comprises a kettle cavity, and a main shaft frame is arranged in the center of the kettle cavity. A supporting frame is arranged at the middle end of the main shaft frame, a shaft sleeve is fixed to the outer wall of the main shaft frame through a key groove and a jackscrew, one side of the shaft sleeve is connected with a paddle, and the bottom face of the paddle is connected with a reinforcing rib. According to the reaction device, the reaction of liquid and gas is improved through the mode that the internal paddles are distributed in a crossed and inclined mode, the liquid is changed into solid more quickly, the reaction time of normal materials is shortened, meanwhile, in the discharging process, the scraping plates at the edge ends of the paddles can scrape materials attached to the inner walls at the same time, and the discharging efficiency is improved. And the inner wall of the discharging pipe is continuously scraped while the inner scraper at the bottom end rotates, so that blockage of a bottom pipeline can be avoided, smooth discharging is kept, and the quality and the overall machining efficiency are improved.