124 results about "Reactive separation" patented technology

The invention discloses a phosphorus oxyfluoride reaction and separation integrated preparation tower, and belongs to the field of industrial equipment for phosphorus oxyfluoride preparation, the preparation tower comprises a tower body, the tower body is provided with a feeding area, a reaction area and a separation area, the feeding area and the separation area are both filled with filler sections of filler, a first feeding port is formed in the bottom of the filler section in the feeding area, and a second feeding port is formed in the bottom of the reaction area. A tubular heat exchanger is arranged in each reaction zone, a threaded pipe is arranged on each tubular heat exchanger, filler is also filled between the threaded pipes, a second feeding hole is formed in the upper part of the reaction zone on the top layer, and polyphosphoric acid and anhydrous hydrogen fluoride are contacted in the reaction zones to form a concentration stepped reaction and a temperature stepped reaction; and the phosphorus oxyfluoride gas generated after the reaction is fractionated through the filler section on the separation area and enters the next process from the top of the tower body. According to the invention, the reaction and separation of phosphorus oxyfluoride production are integrated, the energy consumption of phosphorus oxyfluoride production is reduced, the production cost is reduced, and the reaction yield is improved.

The invention discloses a method for separating, purifying and regenerating waste battery negative electrode powder, which belongs to the field of battery recycling and regenerating, and mainly comprises the following process steps of: ball-milling and screening waste battery negative electrode pieces into certain granularity, soaking the waste battery negative electrode pieces in alkali liquor and an impurity removal agent, and stirring for reaction and separation to obtain a negative electrode powder wet material and a copper ion solution; carrying out drying demagnetization and infrared irradiation treatment on the wet negative electrode powder to obtain regenerated negative electrode powder; and the copper ion solution is subjected to extraction, back extraction and reduction to obtain crude copper, and the crude copper is subjected to vacuum distillation to obtain an electronic-grade copper product. Wherein the impurity removal agent comprises an oxidizing agent, the oxidizing agent oxidizes elemental copper and forms soluble substances under the action of alkali liquor, and the excellent separation effect is achieved. The negative electrode powder treatment comprises infrared irradiation treatment, decomposition of an adhesive can be achieved through the dual effects of heat irradiation and heat conduction, the volume heating effect is formed through scattering, surface crusting is effectively avoided, the adhesive can be efficiently removed, and the quality and the recycling efficiency of the regenerated negative electrode powder are guaranteed.

The invention relates to a folic acid preparation device, in particular to a reaction device integrating reaction and separation, belonging to the technical field of chemical production equipment. The reactor is mainly divided into three parts: a reaction kettle, a precipitation separator and a filter press. The folic acid generated by the reaction is timely separated out of the reaction system by utilizing the characteristic of low solubility of the folic acid, so that the influence of the raw materials on the purity of the folic acid is avoided, and meanwhile, the possibility that the folic acid wraps the 2, 4, 5-triamino-6-hydroxypyrimidine sulfate is reduced. Reaction liquid enters a deposition hopper at the lower part of the precipitation separator, clear liquid at the upper part is re-pumped into the reaction kettle through a pipeline, the precipitate is filtered to obtain filtrate and solid, the solid is a product, and the filtrate is re-pumped into the reaction kettle, so that the aim of separating while reacting is fulfilled. The product folic acid obtained by the reaction device is high in purity, and the reactant 2, 4, 5-triamino-6-hydroxypyrimidine sulfate is high in utilization rate.

The invention belongs to the technical field of gas membrane separation technologies and catalytic materials, and particularly relates to a ZSM-12 molecular sieve-based separation membrane, a preparation method and application thereof, and a reaction separation device using the separation membrane. The preparation method comprises the following steps: mixing and stirring a PEI polymer solution and a ZSM-12 molecular sieve to obtain a ZSM-12PEI membrane casting solution, scraping the ZSM-12PEI membrane casting solution on a glass plate pasted with a base membrane at a constant speed by using a 200 [mu] m scraper, and then drying in a constant-temperature and constant-humidity chamber at the temperature of 30 DEG C and the humidity of 40RH for 24 hours. The reaction separation device disclosed by the invention is designed in a manner that four stages of chambers are connected in series, so that the CO purity can be purified to 99% through step-by-step enrichment. CO is timely separated to avoid secondary oxidation, and the utilization rate of the catalyst is greatly improved.

The wastewater treatment system comprises a water inlet unit, a reactor, a separation unit and a circulation unit which are sequentially connected to form a closed-loop system, the water inlet unit is further connected with a chemical dosing unit, the water inlet unit is used for conveying wastewater to the reactor, and the chemical dosing unit is used for adding alkali into the wastewater to adjust the pH value and providing required magnesium ions; a fluidization reaction zone and a separation zone are arranged in the reactor, and the fluidization reaction zone promotes generation and growth of struvite particles through particle collision and aggregation; the separation zone enables generated particles to partially fall back to the fluidization reaction zone for continuous reaction through preliminary solid-liquid separation; the separation unit is used for receiving the wastewater in the separation area, further removing residual particles, and enabling the small particles to flow back to the reactor through the circulation unit for recycling. By optimizing the particle generation, separation and backflow processes in wastewater treatment, the formation of target large particles is promoted, the resource recycling is facilitated, meanwhile, the consumption of chemical agents is reduced, and the cost is reduced.

The invention discloses a self-balancing multiphase self-shunting device and a control method, and belongs to the technical field of chemical separation. The device comprises an automatic split-phase tank (1), a pressure display A (2), a system pressure automatic controller (3), a light phase collecting tank (4), a liquid discharge valve A (5), a pressure display B (6), a material inlet (7), a light phase overflow port (8), a heavy phase extraction port (9), a split-phase internal component (10), a liquid discharge valve C (11), a heavy phase extraction automatic regulating valve (12), a heavy phase collecting tank (13) and the like. The device is simple in structure and control method, can be operated at normal pressure or under pressure, is high in operation elasticity, realizes self-balance of the liquid level height by utilizing the light phase overflow port (8), realizes rapid phase separation of light and heavy components by adopting a special structure of the phase separation inner component (10), forms a stable phase interface, is good in separation effect, and is suitable for industrial production. The method can be used for chemical unit operations such as extraction separation, reaction separation and rectification.

The utility model relates to a device for reducing hardness of wastewater, which comprises a reaction device, an outlet of the reaction device is connected with a reaction and separation integrated device, the reaction and separation integrated device comprises a reaction cylinder arranged at the bottom and a scum hopper arranged at the top, and a water distribution cylinder arranged above the reaction cylinder is communicated with the reaction cylinder in a sleeving manner; the bottom of the reaction cylinder is communicated with a water distribution pipeline system, the water distribution pipeline system is used for inputting different materials into the reaction cylinder, and a material outlet is formed in the top of the reaction and separation integrated device; and the material outlet is connected with an inlet of the water producing pool. By means of the low-hardness wastewater treatment device, the hardness of high-hardness wastewater can be stably reduced to 20-30 mg / L, and the treatment cost is low.

The utility model relates to a system for switching production of DMC and EMC. The system comprises a reactive distillation tower, a high-pressure separation tower, a low-pressure separation tower, a methanol recovery tower, a light component removal tower, a heavy component removal tower and a pre-reactor. According to the DMC production line, flexible switching production between DMC and EMC can be achieved, the requirements of different markets are met, due to the flexibility, the utilization rate of the production line is increased, the market competitiveness of enterprises is enhanced, in the DMC production process, through the steps of DMC reaction, separation, refining, methanol recovery and the like, the high quality and purity of products are ensured, and the production cost is reduced. In the EMC production process, the efficient and environment-friendly production process is also achieved through the steps of reaction, methanol recovery, refining and the like, the system for switching production of DMC and EMC has remarkable advantages and effects in the aspects of catalyst application, production switching, technological processes, energy conservation, environmental protection, modular design and the like, and new breakthrough and progress are brought to the field of chemical production.

The utility model relates to a reaction and separation integrated device which comprises a reaction cylinder arranged at the bottom and a scum hopper arranged at the top, and a water distribution cylinder arranged above the reaction cylinder is communicated with the reaction cylinder in a sleeving manner; the bottom of the reaction cylinder is communicated with a water distribution pipeline system, the water distribution pipeline system is used for inputting different materials into the reaction cylinder, and a material outlet is formed in the top of the reaction and separation integrated device. According to the reaction and separation integrated device, the reaction for reducing the hardness of water can be efficiently carried out, solid (CaCO3, Mg (OH) 2 precipitates, suspended solids in wastewater and the like) and liquid separation are synchronously realized, and the device is low in operation cost and has excellent economical efficiency and practicability.

The invention discloses reaction separation equipment for preparing phosphorus oxyfluoride, which comprises a reaction separation tower body, the lower end of the reaction separation tower body is sequentially provided with a feeding zone, a plurality of reaction zones and a separation zone from top to bottom, the feeding zone and the separation zone are fixedly filled with first filler layers, and the reaction zones are filled with second filler layers; the heat exchange mechanism comprises a heat exchange medium inlet container and a heat exchange medium outlet container, a plurality of heat exchange guide pipes are evenly distributed on the periphery of the heat exchange medium inlet container and the periphery of the heat exchange medium outlet container respectively, and heat exchange medium circulation pipes pre-buried in the second packing layer are longitudinally connected between the heat exchange guide pipes respectively; corresponding driving pipe fittings are upwards and rotationally mounted at the feeding ends of the heat exchange medium inlet pipes respectively; and a plurality of heat exchange medium discharge pipes. According to the invention, the reaction temperature uniformity in each reaction zone can be effectively improved, and the sufficient uniform distribution effect is ensured when materials slowly flow through the reaction zones.

The invention belongs to the technical field of chemical synthesis, and particularly relates to a system and a method for preparing anhydrous peroxy acid with more than C3. The system comprises a reactive distillation dividing wall tower, the reactive distillation dividing wall tower comprises a reaction separation zone, a water zone, a tower top zone and a tower bottom zone, the reaction separation zone and the water zone are arranged between the tower top zone and the tower bottom zone, the reaction separation zone is provided with a raw material inlet, and the water zone is provided with a plurality of solvent inlets; the reaction separation area and the water-carrying area are separated through a NaA molecular sieve membrane assembly, and the bottom of the water-carrying area is of a closed structure. By adopting the system disclosed by the invention, water generated by reaction and water brought by hydrogen peroxide can be removed from the system in time, backmixing among reaction raw materials is reduced, the reaction rate is further increased, and meanwhile, the water content of peroxide at the tower bottom can be reduced, so that the retention time of the peroxide is shortened, and the energy consumption is reduced.

The application discloses a device and method for preparing tert-butylamine by directly ammoniating isobutene, which comprises sequentially connected raw material preparation unit, reaction separation unit, rectification separation unit and circulating recovery unit; the raw material preparation unit is used for storing, mixing and heating raw materials; the reaction separation unit is used for pressurizing reaction of the raw materials in the raw material preparation unit and gas-liquid separation of products; the rectification separation unit is used for rectification separation of liquid-phase products separated by the reaction separation unit and recovery of part of unreacted raw materials; and the circulating recovery unit is used for rectification recovery of part of raw materials of gas-phase products separated by the reaction separation unit. The application has the characteristics of low overall equipment investment, high energy utilization rate, simple product separation and purification, perfect overall device design and small environmental pollution.

The present invention discloses a process for preparing m-chloroperbenzoic acid by using a molecular sieve catalyst, belonging to the technical field of chemical catalytic preparation, and comprising the following steps: S1, dissolving m-chlorobenzoic acid in an organic solvent, adding the molecular sieve catalyst, uniformly stirring, and then dropwise adding an aqueous oxidant solution with a mass fraction of 15% to 30% for an oxidation reaction; S2, after the oxidation reaction is completed, separating the molecular sieve by using a filter for the next reaction; S3, after separation, extracting and separating the organic phase, distilling and recovering the organic solvent to obtain m-chloroperbenzoic acid crystals. The present invention overcomes the defects and deficiencies in the existing process methods, such as low effective yield and serious wastewater pollution. A solid molecular sieve is used as the catalyst. The catalyst has stable properties, simple separation, the solvent can be recycled and reused in the process, the product yield is high, environmental problems caused by other oxidation methods are avoided, and it is beneficial to large-scale industrial production.

The utility model relates to the technical field of water treatment, and provides an unpowered mixing reaction separation device and a water treatment system, the unpowered mixing reaction separation device comprising: a main body; a central lifting area, located in the main body, with a gap between the central lifting area and the bottom wall of the main body to form a water return port; a hydraulic mixing area, located in the main body and arranged along the circumference of the central lifting area, the hydraulic mixing area comprising a first annular channel, an ascending channel, an inner ring descending area and a second annular channel arranged in sequence along the flow direction of the water body. The unpowered mixing reaction separation device provided by the utility model makes the collision between sewage and the reagent more frequent, which is conducive to improving the mixing effect and lays a good foundation for the flocculation and sedimentation separation in the latter stage. Compared with a mixer using mechanical stirring, there is no need to additionally set up stirring components such as a water pump and a rotating motor, the structure is simpler, and energy consumption can be reduced.

The invention provides a method and a system for synthesizing 5-methyl-3, 5-dicyclopropyl pyrazoline through reaction-separation coupling of a micro-fluidic chip and a super-hydrophilic / underwater super-oleophobic film, belongs to the technical field of spaceflight liquid propellants, and aims to solve the technical problem that the 5-methyl-3, 5-dicyclopropyl pyrazoline cannot be continuously prepared. The preparation method disclosed by the invention comprises the following steps: respectively preheating 1, 3-dicyclopropyl-2-butene-1-one and hydrazine hydrate, introducing the preheated 1, 3-dicyclopropyl-2-butene-1-one and hydrazine hydrate into a micro-fluidic chip for reaction, and separating and dehydrating a cooled material which flows out after the reaction through a super-hydrophilic / underwater super-oleophobic membrane to obtain the 5-methyl-3, 5-dicyclopropyl pyrazoline. According to the present invention, the micro-chemical chip continuous flow synthesis technology and the super-hydrophilic / underwater super-oleophobic membrane separation technology are coupled in real time, such that the reaction-separation process integration continuity is achieved, the heterogeneous liquid-liquid mass transfer and mixing of the system are enhanced, and the efficient preparation of the 5-methyl-3, 5-dicyclopropyl pyrazoline and the real-time rapid oil-water separation are achieved.

The present application belongs to the field of refinery dry gas utilization, and discloses a system and method for preparing propylene by disproportionation of refinery dry gas. The system comprises a raw material pretreatment unit, a disproportionation reaction unit and a product separation unit. The raw material pretreatment unit comprises, in sequence, an alkali washing package, a dry gas compressor, a dry gas absorption tower, a first desorption tower, a second desorption tower and a circulating carbon four cooler. The disproportionation reaction unit comprises a disproportionation reactor inlet-outlet heat exchanger, a disproportionation reactor and a reaction outlet cooler. The product separation unit comprises a deethanizer, a propylene rectification tower, a reaction separation tail gas absorption tower and a remaining carbon four cooler. The system and method can reduce the consumption of carbon four raw material, improve the recovery rate of ethylene in refinery dry gas and reduce consumption.

The utility model discloses a device suitable for preparing methanol from diversified feed gas. The device comprises a hydrogen pressurization system, a compression system, a reaction system and a separation system, the hydrogen pressurizing system automatically controls the amount of the added hydrogen according to the component change condition of the gas sent by the previous working section, so that the hydrogen-carbon ratio of the gas entering the synthesis working section is adjusted in time; the compression system compresses the raw material gas and sends out the pressurized raw material gas through the pressurized raw material gas outlet into the reaction system for reaction; and the separation system receives the reaction gas output by the reaction system, separates crude methanol and sends out the crude methanol from a crude methanol outlet. According to the utility model, the process flow of the whole plant is simplified by optimizing the traditional methanol synthesis process, the investment cost of the device is reduced, meanwhile, the device is adaptive to various different feed gas process flows, and the influence of fluctuation generated by a single unstable gas source on the methanol production process is reduced. According to the method, tail gas and heat generated in methanol production can be recycled, and resource waste is reduced.

The invention discloses integrated equipment for synthesizing ammonia through electro-catalysis nitrate radical reduction, and relates to the technical field of crossing of water treatment and resource recovery. A main cavity is supported by the tops of the supporting legs. A bipolar membrane sealing and separating assembly, an anode chamber assembly and a cathode chamber rotational flow reaction and separation assembly are respectively arranged in the main cavity, and an inner cavity of the main cavity is divided into an upper anode chamber and a lower cathode chamber by the bipolar membrane sealing and separating assembly; through systematic in-situ cooperation of the anode chamber assembly, the bipolar membrane sealing and separating assembly and the cathode chamber rotational flow reaction and separation assembly, organic unification of efficient conversion of nitrate radicals, high-selectivity recovery of ammonia products, self-stabilization of a reaction microenvironment and minimization of process energy consumption is realized by means of precise design and cooperation of all the parts; the core pain points of reaction separation and separation, serious mass transfer limitation, easy catalyst inactivation and amplified operation instability of a traditional device are specifically solved, and the industrial requirements of low-concentration wastewater treatment and distributed green ammonia synthesis are met.

The present application relates to a diisobutylene production device, which comprises: a contact heat exchanger in which a first heat transfer section is arranged, a first raw material inlet is arranged above the first heat transfer section, and a second raw material inlet is arranged below the first heat transfer section; the reaction separation tower internally comprises a rectifying section and a stripping section, a third raw material inlet is formed in the position, at the rectifying section, of the reaction separation tower, the top end of the contact heat exchanger is communicated to the third raw material inlet, the rectifying section further comprises a first reaction section, and the reaction separation tower is further provided with a fourth raw material inlet; the mixer is communicated with the bottom of the contact heat exchanger; the top end of the contact reactor is communicated with the second raw material inlet, the bottom end of the contact reactor is communicated with the fourth raw material inlet, a second heat transfer section and a second reaction section with a catalyst are arranged in the contact reactor, a fifth raw material inlet is formed above the second heat transfer section, and the mixer is communicated to the fifth raw material inlet. The method can be used for treating the mixed C4 raw material with the isobutene mass fraction being greater than or equal to 50%, and the yield and the purity of the target product diisobutylene are ensured.

The utility model relates to a chemiluminescence immunoassay device which comprises a first shaking assembly for clamping a sample bottle and driving the sample bottle to move, and a cover opening assembly arranged on one side of the first shaking assembly along a first direction and used for opening the sample bottle, the reagent assembly comprises a reagent bottle used for containing a reaction solution, the hopper bin comprises a reaction cup used for containing a mixed solution of a sample solution and the reaction solution, the second shaking assembly is used for driving the reaction cup to move, and the incubation assembly is used for incubating the mixed solution in the reaction cup so that the mixed solution can be subjected to a chemical reaction; the separation assembly is used for separating impurities in the mixed solution, and the detection assembly is used for detecting the mixed solution. In conclusion, according to the chemiluminescence immunoassay device, a worker does not need to shake up the sample liquid in the sample bottle manually and open the sample bottle manually when the chemiluminescence immunoassay is carried out on the sample, so that the chemiluminescence immunoassay device is relatively high in working efficiency.

The invention relates to a system and a method for preparing 2-methyl-1, 3-propylene glycol diacetate. The system comprises: a preheater, which is used for preheating 2-methylene-1, 3-propylene glycol diacetate and hydrogen; the hydrogenation reactor is connected with the preheater and is used for providing a reaction place for hydrogenation reaction of 2-methylene-1, 3-propylene glycol diacetate and hydrogen; the hydrogenation reactor is filled with a hydrogenation catalyst loaded with a Pd-based bimetallic catalyst; the gas-liquid separator is connected with the hydrogenation reactor and is used for separating the 2-methyl-1, 3-propylene glycol diacetate generated in the hydrogenation reactor from the residual hydrogen; and the refining tower is connected with the bottom of the gas-liquid separator and is used for purifying the 2-methyl-1, 3-propylene glycol diacetate. Compared with the prior art, the method is good in atom economy, low in raw material cost, high in catalyst activity, good in stability, high in production continuity degree, simple in reaction separation process, high in product purity and suitable for large-scale production.

The invention is applicable to the technical field of hydroxylation method benzenediol preparation, and provides a reaction separation and waste catalyst withdrawing device and process for phenol hydroxylation preparation of benzenediol, and the reaction separation and waste catalyst withdrawing device comprises a reaction separation device, a micro-interface generator, a circulating heat exchange coupling device, a backwashing device and a waste catalyst withdrawing device. The reaction separation device comprises a reaction kettle and a separation device; the micro-interface generator and circulating heat exchange coupling device comprises a phenol methanol liquid distributor, a hydrogen peroxide micro-interface distributor, a pipeline heat exchanger and a pipeline efficient mixer; the backwashing device comprises a backwashing tank and a backwashing pipeline; the waste catalyst withdrawing device comprises a waste catalyst transfer tank, a membrane separation device and a water washing device. Through effective coupling of the reaction separation process, micro-interface distribution and heat exchange, the reaction separation process is simplified, the reaction efficiency is improved, and the heat exchange efficiency is improved.

The utility model provides oil sludge treatment integrated equipment, which comprises a dosing stirring barrel and a dosing stirring mechanism, the bottom surface of the dosing stirring barrel is fixedly connected with a stirring area sewage draining exit, the bottom surface of the stirring area sewage draining exit is fixedly connected with a reaction separation barrel, and the reaction separation barrel is fixedly connected with a stirring area sewage draining exit. A supporting base is fixedly connected to the surface of the outer side of the reaction separation barrel, a chemical adding stirring mechanism is arranged on the surface of the inner side of the chemical adding stirring barrel, and a reaction separation mechanism is arranged on the surface of the inner side of the reaction separation barrel. The oily sludge treatment integrated equipment comprises an oily sludge dosing area, a stirring area, an ultrasonic reaction area and a solid-liquid separation area which are communicated in sequence, the oily sludge realizes water, oil and sludge three-phase separation in the ultrasonic reaction area and the solid-liquid separation area, and the oily sludge treatment integrated equipment has the advantages of low cost, simplicity, feasibility and better effluent quality.

The application provides a method for synthesizing 2,4,4-trimethyl-2-pentanol from diisobutene by esterification hydration, comprising the following steps: S1, esterification hydration reaction: diisobutene, organic acid and water are reacted in the presence of a catalyst; S2, separation and recovery: S3, hydrogenation reaction: 2,4,4-trimethyl-2-pentyl acetate recovered in step S2.5 is subjected to catalytic hydrogenation to generate a hydrogenation reaction liquid containing 2,4,4-trimethyl-2-pentanol and ethanol; S4, the hydrogenation reaction liquid obtained in step S3 is separated, and TMPOL is synthesized by using the above method with the organic acid as a medium, the single-pass conversion rate of diisobutene can reach 50%, and the selectivity reaches 99%. The process has the characteristics of high efficiency and high atom economy, and has great industrialization potential.

The invention discloses a system for removing alcamines in NMP (N-Methyl Pyrrolidone) recovery liquid. The system comprises a dehydration rectifying tower, a reaction separation tower, a product refining tower and a reaction and reaction separation tower reboiler which is used as a reactor, the dehydration rectifying tower is respectively connected with the reaction separation tower and the product refining tower; the reaction and reaction separation tower reboiler is connected with the reaction separation tower; the reaction and reaction separation tower reboiler is connected with a dehydration rectifying tower or a product refining tower; the reaction and reaction separation tower reboiler comprises an outer heat exchange tube; an inner reaction heat exchange tube is arranged in the outer heat exchange tube; the inner reaction heat exchange tube is an inner enhanced heat exchange tube; the reaction and reaction separation tower reboiler is provided with an inner side tube plate for separating a shell pass of the reaction and reaction separation tower reboiler from an outer heat exchange tube pass and an outer side tube plate for separating the outer heat exchange tube pass from an inner reaction surrounding tube pass. The method realizes high yield, fast reaction rate and energy-saving removal of alcamines in NMP.

The utility model relates to the technical field of disulphide production, and discloses a disulphide purification device with a wastewater recovery structure, which comprises a primary reaction separation mechanism and a filtering separation mechanism, the primary reaction separation mechanism comprises a reaction kettle, and a stirring paddle is arranged at the central position in the reaction kettle; the upper end and the lower end of the annular outer side wall of the reaction kettle are each fixedly sleeved with an annular heater. According to the utility model, the wastewater recycling mechanism for deep treatment is additionally arranged, the wastewater collecting box connected with the wastewater discharge interface of the distillation tower is arranged, wastewater containing an extracting agent and a small amount of disulphide generated in the distillation process is collected, and the extracting agent recycling device is arranged and can be an activated carbon adsorber or a reverse osmosis membrane filter; the extraction agent in the wastewater is recycled, trace impurities in the wastewater are further removed, and the purity of the recycled water is improved, so that the recycled water meets the discharge standard or the water quality requirement for recycling.

The wastewater treatment system comprises a water inlet unit, a reactor, a separation unit and a circulation unit which are sequentially connected to form a closed-loop system, the water inlet unit is further connected with a chemical dosing unit, the water inlet unit is used for conveying wastewater to the reactor, and the chemical dosing unit is used for adding alkali into the wastewater to adjust the pH value and providing required magnesium ions; a fluidization reaction zone and a separation zone are arranged in the reactor, and the fluidization reaction zone promotes generation and growth of struvite particles through particle collision and aggregation; the separation zone enables generated particles to partially fall back to the fluidization reaction zone for continuous reaction through preliminary solid-liquid separation; the separation unit is used for receiving the wastewater in the separation area, further removing residual particles, and enabling the small particles to flow back to the reactor through the circulation unit for recycling. By optimizing particle generation, separation and backflow processes in wastewater treatment, formation of target large particles is promoted, resource recycling is facilitated, meanwhile, consumption of chemical agents is reduced, and cost is reduced.

The present invention provides a synthetic fuel manufacturing apparatus that can perform multiple processes in a single unit when manufacturing synthetic fuel by mixing oil and water. [Solution] To continuously perform the process of mixing and reacting water and oil, which have different specific gravities, and then separating the two liquids, the system is equipped with reaction / separation tanks T3 and T4, which consist of an inner reaction tank T3 and an outer separation tank T4. The inner reaction tank T3 reacts the mixed liquid, which is supplied by a stirring pump P2, while stirring it. The mixed liquid is taken from the bottom of the reaction tank T3 and discharged into the outer separation tank T4 via a separation pipe 3 that is sent to the top of the separation tank T4. The discharged mixed liquid is separated into two types based on the difference in specific gravity and discharged from the oil outlet at the top of the separation tank and the water outlet at the bottom of the separation tank. At this time, the outlet height of the separation pipe 3 to the separation tank can be adjusted according to the reaction time in the reaction tank T3.

This invention provides a reaction and separation tank that can perform multiple processes in a single unit when mixing oil and water to produce synthetic fuel. [Solution] To continuously perform the process of mixing and reacting water and oil, which have different specific gravities, and then separating the two liquids, the system is equipped with reaction / separation tanks T3 and T4, which consist of an inner reaction tank T3 and an outer separation tank T4. The inner reaction tank T3 reacts the mixed liquid, which is introduced by a stirring pump, while stirring it. The mixed liquid is taken from the bottom of the reaction tank T3 and discharged into the outer separation tank T4 via a separation pipe 3 that is sent to the top of the separation tank T4. The discharged mixed liquid is separated into two types based on the difference in specific gravity and discharged from the oil outlet 4a at the top of the separation tank T4 and the water outlet 4c at the bottom of the separation tank T4. The separation pipe 3 has a double-pipe structure in which two pipes can move relative to each other, and the outlet height to the separation tank T4 can be adjusted according to the reaction time in the reaction tank T3.

The utility model relates to the technical field of chemical reaction separation equipment, and provides a membrane reaction separation kettle which comprises a kettle body, and a plurality of membrane stack components, a stirrer, a gas distributor and a liquid distributor are arranged in the kettle body; the kettle body is provided with a discharge port, a backflushing port, a clear liquid outlet, a catalyst inlet and a liquid inlet; and the membrane stack assembly is uniformly distributed along the inner wall of the kettle body and consists of a plurality of membrane tubes, and two ends of each membrane tube are connected with the clear liquid branch tube and the clear liquid collecting tube. The cleaning brushes are arranged on the outer walls of the membrane pipes in a sleeving manner, and all the cleaning brushes are connected together through cleaning brush supporting rods, extend out of the kettle body through connecting rods and are connected with a driving motor to drive the cleaning brushes to reciprocate up and down along the membrane pipes so as to quickly remove filter cake layers on the surfaces of the membrane pipes. And the back-flushing system is provided with a back-flushing tank, a back-flushing pipeline and a back-flushing pump. According to the technical scheme, the problems that in the prior art, the membrane flux stability and flux recovery are obviously insufficient, and efficient chemical production is restricted are solved.