1436 results about "Ceramic membrane" patented technology

The invention provides an intelligent sewage treatment process optimization method and system. The method comprises the following steps: continuously collecting the flux attenuation rate, transmembrane pressure difference and pollutant spectrum data of a ceramic membrane, carrying out time sequence analysis, constructing a pollution accumulation dynamic model, and predicting a critical threshold value; when a threshold value is reached, triggering an ultrasonic cavitation device, adjusting high-frequency vibration to generate a microbubble group, stripping pollutants by utilizing shock waves, and calculating membrane flux recovery data; fusing the spectral data and the recovery data to extract an actual pollution stripping efficiency value, and comparing a theoretical value to obtain a difference proportion; if the actual value is lower than the theoretical value, the cleaning period is shortened, the fluid pressure is increased to strengthen the stripping effect, and meanwhile, dynamic model parameters are reversely corrected based on the pressure adjustment amplitude to form closed-loop regulation and control. According to the invention, intelligent prediction, self-adaptive cleaning and closed-loop optimization of ceramic membrane pollution are realized, the sewage filtering efficiency is improved, and the energy consumption and cleaning cost are reduced.

The invention discloses an anti-fouling piezoelectric ceramic membrane which comprises a support body, a coil and a piezoelectric ceramic separation layer, the support body is made of porous ceramic with a through hole in the middle; the coil is a closed loop composed of a lead coil and a crystal oscillator; the piezoelectric separation layer is coated on the inner wall of the through hole of the support body; and the coil is arranged between the support body and the piezoelectric ceramic separation layer. When a medium containing electrolyte passes through a membrane hole, the coil generates induction direct current, the direct current is converted into positive wave pulse current through the oscillator, the wound and overlapped piezoelectric ceramic membrane separation layer is excited, ultrasonic vibration is generated, and therefore the membrane dirt blocking condition is reduced, the use efficiency of the ceramic membrane is improved, and the maintenance and use cost is reduced.

The invention belongs to the technical field of sewage treatment and membrane separation, and provides an in-situ nondestructive membrane pollution detection system and method based on an ultrasonic transmission signal, and the system comprises an ultrasonic excitation module which is used for generating a sine wave excitation signal which penetrates through a membrane body to excite the ultrasonic transmission signal for pollution detection; the signal processing module is used for continuously collecting and preprocessing ultrasonic transmission signals of the clean membrane body and the membrane bodies with different pollution degrees, extracting ultrasonic transmission signal characteristics under different pollution degrees, and establishing a pollution thickness-signal characteristic mapping model; wherein the ultrasonic transmission signal features comprise a time-frequency domain energy gravity center feature and a frequency attenuation spectrum slope feature; and the pollution detection module is used for judging the pollution stage of the membrane body to be detected based on the pollution thickness-signal feature mapping model, and completing in-situ nondestructive membrane pollution detection. According to the technical scheme, the sludge pollution state in the ceramic membrane and flat membrane filtering process can be monitored in real time, and early warning and pollution dynamic tracking are achieved.

The embodiment of the invention provides a ceramic diaphragm automatic positioning system based on high-precision visual feedback and closed-loop control, and the system comprises a parameter reference setting module which is used for setting a theoretical reference point and a visual detection parameter; the real-time visual detection module is used for collecting an image of the to-be-stacked film and outputting an image coordinate of the mark point; the core operation module is used for converting the image coordinates of the mark points into actual coordinates based on the visual detection parameters, reading a theoretical reference point of the current to-be-stacked diaphragm and calculating a position error vector between the actual coordinates and the theoretical reference point, and the position error vector comprises a translation compensation amount and a rotation compensation amount; and the motion control and closed loop feedback module is used for receiving the position error vector and generating a control instruction to drive the workbench to move. According to the system, through parameterized reference setting, real-time visual detection, intelligent error calculation and real-time motion compensation, the technical limitation is effectively overcome, and the lamination alignment precision and efficiency are remarkably improved.

The invention discloses a polytetrafluoroethylene ceramic membrane and a preparation method and application thereof, and the preparation method comprises the following steps: (1) adding polytetrafluoroethylene and a binder into water, and carrying out first mixing to obtain polytetrafluoroethylene slurry; adding a carbon nanotube and a dispersing agent into water, and carrying out secondary mixing, so as to obtain a carbon nanotube dispersion liquid; (2) carrying out third mixing on the carbon nanotube dispersion liquid and the polytetrafluoroethylene slurry to obtain a membrane preparation liquid; and (3) coating the surface of a ceramic support with the membrane preparation liquid, drying, and carrying out microwave sintering. The PTFE / ceramic composite membrane is prepared by microwave sintering, so that the sintering time and the production period are obviously shortened, and the production efficiency and the energy utilization rate of the product are obviously improved; the prepared PTFE / ceramic composite membrane is narrow in pore diameter and uniform in pore diameter distribution, has good hydrophobicity and oil-water separation performance, can effectively intercept 30-200nm nanoparticles, and has excellent anti-pollution capacity and stable separation performance for water-in-oil emulsions with different concentrations.

The invention relates to the technical field of membrane cleaning, in particular to a ceramic membrane backwashing method, electronic equipment and a storage medium. The invention provides a backwashing method of a ceramic membrane. The backwashing method comprises the following steps: firstly, acquiring process parameters of the ceramic membrane during operation in real time; then analyzing a pollution mechanism based on the process parameters, and calculating a comprehensive pollution degree and a dominant pollution type; then, according to the comprehensive pollution degree and the dominant pollution type, a multi-stage backwashing flow state sequence is matched and generated from a predefined multi-stage flow state strategy library; and finally, aiming at each target flow state in the multi-stage backwashing flow state sequence, respectively generating a corresponding gas pulse control parameter and a corresponding water pulse control parameter, and sequentially executing the gas pulse control parameter and the water pulse control parameter. According to the present invention, the multi-stage flow state control dynamically adapting to the pollution characteristics is adopted to replace the traditional fixed flow state mode, such that the problems of insufficient pertinence and poor backwashing effect caused by the fixed flow state are solved, and the backwashing efficiency of the ceramic membrane is improved.

The invention discloses a siraitia grosvenorii low-temperature continuous countercurrent extraction process and a siraitia grosvenorii extract, and belongs to the technical field of siraitia grosvenorii extraction.The siraitia grosvenorii low-temperature continuous countercurrent extraction process comprises the following steps that S1, fresh siraitia grosvenorii fruits are extracted through a four-stage squeezing and continuous countercurrent extraction combined method, s2, carrying out solid-liquid separation on the first liquid phase through ceramic membrane microfiltration, and collecting a microfiltrate; and S3, carrying out post-treatment on the micro-filtrate to obtain the extract. The siraitia grosvenorii low-temperature continuous countercurrent extraction process is high in extraction efficiency and low in solvent consumption, and the prepared extract has both high sweetness and oxidation resistance.

The invention discloses a preparation method of a crocodile hydrolyzed protein zinc skin care product, and relates to the technical field of skin care. The method comprises the following steps: step a, pretreating raw materials: taking fresh crocodile meat and bones, cleaning, mechanically crushing until the particle size is less than 5mm, and adding water according to the ratio of 1: (3-5) to prepare homogenate; step b, performing three-step enzymolysis, namely performing enzymolysis by adopting alkaline protease, flavourzyme and zinc chelating enzyme in sequence; according to the constructed technology of three-step enzymolysis and three-stage membrane separation, accurate preparation of crocodile protein zinc is achieved, and the zinc chelating rate is increased to 90% or above through the gradient effect of alkaline protease, flavourzyme and zinc chelating enzyme and directional release of zinc binding sites and is remarkably higher than that of a traditional single-enzyme hydrolysis technology; meanwhile, a combined purification technology of a ceramic membrane, an ultrafiltration membrane and a nanofiltration membrane is adopted to replace chemical precipitation and organic solvent extraction, so that the completeness of active ingredients is reserved, the risk of environmental pollution is reduced, and the method conforms to the green manufacturing trend of food industry.

The invention discloses a preparation method for simultaneously and efficiently extracting crocodile polypeptide and crocodile oil, and relates to the technical field of biological extraction, crocodile meat is used as a raw material, and heating micro-pressure treatment is sequentially performed to promote component dissolution; a multi-stage enzymolysis process is adopted, alkaline protease, neutral protease and lipase are sequentially used, and a calcium phosphate system is used for assisting filtration and a natural antioxidant is added in a gradient manner in the enzymolysis process; performing plate frame filtration and standing layering subsequently to realize crude separation of the oil peptide; finally, the crocodile polypeptide liquid is subjected to multi-stage membrane filtration and spray drying, the crocodile crude oil is subjected to ultrasonic-assisted fishy smell removal, ceramic membrane fine filtration and gradient cooling phase change refining, and after enzymolysis treatment and before filtration, a composite additive is added into enzymatic hydrolysate and stirred. No organic solvent exists in the whole process, and the product yield, purity and oxidation stability are remarkably improved.

The invention discloses a self-cleaning composite piezoelectric ceramic membrane as well as a preparation method and application thereof, and belongs to the field of composite ceramic membranes. The technical problem that an existing ceramic membrane separation technology is poor in biomembrane pollution resisting effect is solved. According to the preparation method, the barium titanate ceramic membrane is firstly prepared to serve as the base membrane, then the copper oxide one-dimensional nanostructure is loaded on the piezoelectric ceramic substrate, and the base membrane has a large membrane surface area and can be combined with more catalysts, so that more active sites are provided for catalytic reaction; according to the composite membrane, the hydrophilicity, the anti-pollution performance and the piezoelectric catalysis self-cleaning performance of the membrane are remarkably improved, and pollutants in water can be quickly and effectively separated, so that the flux and the anti-pollution performance of the membrane are improved.

The invention relates to the technical field of sewage treatment, in particular to a ceramic membrane efficient filtering method and system for sewage treatment, and the method comprises the steps of confirming a ceramic membrane filtering environment, obtaining sewage characteristics, extracting operation parameters, and executing online cleaning and collaborative filtering operation. By optimizing the online cleaning mechanism and the anti-pollution capacity of the ceramic membrane, the sewage treatment efficiency is remarkably improved. The invention further provides electronic equipment and a storage medium which are used for realizing the method. The method can call the treatment flow and parameters in the ceramic membrane operation database according to the sewage characteristics, is suitable for different sewage types, prolongs the service life of the ceramic membrane, and improves the economic benefits.

The invention relates to the technical field of nitrate production, in particular to a potassium nitrate purification device which comprises a dissolving tank, a filtering device, a crystallization kettle, a centrifugal machine and a drying machine with a steam jacket which are sequentially connected in series through pipelines. The dissolving tank first jacket is connected with a heat source through a circulating pipeline; a liquid outlet of the centrifugal machine is sequentially connected with the cyclone separator, the ceramic membrane filter, the cationic resin column, the first temporary storage tank and the heat source, and the first heat exchanger and the second heat exchanger are sequentially installed between the first temporary storage tank and a heating medium inlet of the heat source. A steam outlet pipeline of the steam jacket is connected with a heat medium inlet of the first heat exchanger, the first heat exchanger is connected with the second temporary storage tank through a pipeline, and the second temporary storage tank is connected with the heat source through a pipeline. A pipeline of the second vacuum unit is connected with a thermal medium inlet of a second heat exchanger, and the second heat exchanger is connected with a second temporary storage tank. According to the method, the potassium nitrate purification efficiency, the product purity, the resource utilization rate and the energy economy are synergistically improved.

The utility model discloses a structure of a disc-type ceramic membrane. A support body of the disc-type ceramic membrane is formed by butting inner surfaces of two support body single bodies with the same structure; an outer circle protruding ring is arranged on the outer edge of the inner surface of each supporting body single body, an inner circle hole of a concentric circle structure is formed in the center of each supporting body single body, spokes are evenly distributed between the outer circle protruding rings and the inner circle holes at intervals, connecting pieces and groove holes are evenly distributed on the outer circle protruding rings, the connecting pieces comprise protruding blocks and grooves, the protruding blocks and the grooves are correspondingly matched in shape and are alternately arranged at intervals in position, and the groove holes are communicated with the groove holes. The slotted holes are positioned in the middle between the adjacent connecting pieces; the inner surfaces of the two supporting body single bodies are in butt joint to form the supporting body, the protruding block of one single body is correspondingly embedded into the groove of the other single body, the groove holes are in butt joint with each other, and after the groove holes are in butt joint, ceramic wedges for connection are arranged in the groove holes. According to the utility model, the connecting piece and the slotted hole on the excircle convex ring are combined with the ceramic wedge, so that the connection of the two support body monomers is enhanced, the formed support body is stable in combination, the spokes support the disc-type ceramic membrane in a mirror image cross manner, the mechanical strength and the qualification rate of products are remarkably improved, and meanwhile, the production cost is reduced. The effective filtering area and the permeation flux of the disc type ceramic membrane are also effectively improved.

The invention discloses a micro-nano bubble generation device based on ceramic membrane surface flow regime optimization and a generation method thereof.The micro-nano bubble generation device comprises a porous ceramic membrane and a power driving device, the power driving device is connected with a flow rate pressurizing device through a flow rate pressurizing pipeline, and the porous ceramic membrane is connected with the flow rate pressurizing device; the porous ceramic membrane is connected with a gas supply device through a gas conveying pipeline; the flow velocity supercharging device is used for providing flow velocity gradient and shear force on the surface of the porous ceramic membrane; and the power driving device and the gas supply device are connected with the monitoring control system. The generation method comprises the following steps: introducing gas into the porous ceramic membrane; continuous high-flow-speed liquid is applied through the power driving device, the flow speed pressurizing pipeline and the flow speed pressurizing device; running parameters of the gas supply device and the power driving device are monitored in real time, and dense vaporific micro-nano bubble water is generated on the surface of the porous ceramic membrane through dynamic adjustment. The sizes of the generated micro-nano bubbles are obviously reduced, and the micro-nano bubbles are uniformly distributed.

The invention belongs to the technical field of nanofiltration, and provides a preparation method of a recrystallized silicon carbide-silicon carbonitride ceramic membrane. The preparation method comprises the following steps: applying a polysilazane solution to a porous substrate for the first time, and then performing first pyrolysis to obtain a pyrolysis material; and applying a polysilazane solution on the pyrolysis material for the second time, and then carrying out second pyrolysis to obtain the recrystallized silicon carbide-silicon carbonitride ceramic membrane. According to the invention, a solution containing propargyl polysilazane or organic polysilazane Durazane 1500 quick-drying resin is used as a precursor to prepare the ceramic membrane, and the ceramic membrane has the advantages of high ceramic yield, excellent high-temperature stability, high retention rate and controllable microstructure, and is suitable for separation and protection application in extreme environments.

The utility model discloses an immersed rotary ceramic membrane aeration device which comprises a base, a waterproof rotary motor, a rotary ceramic membrane component and a rotary joint, an internal air channel of the rotary ceramic membrane comprises an inner ring air collection cavity, a plurality of air flow channels with the same size and structure and an outer ring aeration cavity, the inner ring air collection cavity is communicated with air outlet holes corresponding to the rotary ceramic membrane where the inner ring air collection cavity is located and is communicated with the outer ring aeration cavity through the air flow channels, and different air flow channels distribute air independently. The inner ring gas collection cavity carries out secondary distribution on inlet gas, so that gas distribution is more uniform, the gas subjected to secondary distribution passes through the gas flow channels to be uniformly aerated, and meanwhile, the outer ring aeration cavity at the tail ends of the gas flow channels communicates all the gas flow channels, so that the aeration uniformity in each gas flow channel is further ensured. The whole device can be submerged into water for use, and is relatively flexible, simple and convenient to install, maintain and apply.

The invention relates to the field of extraction of sacha inchi oil, in particular to a preparation method and application of sacha inchi oil, and aims to solve the problems of large loss of heat-sensitive components, solvent residue and low oil yield in the traditional process. The ratio of cellulase to pectinase to xylanase to lipase is 3: 2: 1: 0.5, and carrying out enzymolysis for 2-3 hours at the pH value of 4.5-5.5 and the temperature of 45-50 DEG C; the obtained enzymolysis product is subjected to 28-40kHz ultrasonic treatment for 20-30 minutes, and then is subjected to two-stage gradient squeezing (pre-squeezing at 50-55 DEG C to final squeezing at 35-40 DEG C) in combination with 0.1 mu m ceramic membrane filtration, so that efficient oil extraction and active ingredient protection are realized. The oil yield of the sacha inchi oil is increased to 50.0%, the content of alpha-linolenic acid is larger than or equal to 42%, the content of vitamin E reaches 158 mg / 100 g, no solvent is left, and the sacha inchi oil is suitable for the fields of functional food and cosmetics.

The invention provides a percolation device and a preparation method of a phyllanthus emblica extract. The percolation device comprises a percolation tank, a pressing device and a plurality of separation structures, the preparation method of the emblic leafflower fruit extract comprises the following steps: firstly, coarsely crushing and soaking an emblic leafflower fruit medicinal material, then percolating the emblic leafflower fruit medicinal material in a percolating device, and collecting percolate; the preparation method comprises the following steps: extracting a percolate, adsorbing the percolate through macroporous resin, eluting with water and ethanol in sequence, combining an obtained lower column liquid and a water washing liquid, separating through a ceramic membrane and an ultrafiltration membrane in sequence to obtain a micromolecular functional sugar part, decolorizing with activated carbon, eluting with an ethanol solution, concentrating and drying to obtain a polyphenol part, and proportioning to obtain a target product. According to the technical scheme provided by the invention, active micromolecular functional sugar and polyphenol components in the phyllanthus emblica can be extracted and enriched at one time. The extract is light in color and good in solubility, so that the problems of single extracted component and inconvenience in application due to poor color and solubility in the traditional process are effectively solved.

This invention discloses an electrically controlled enrichment catalytic membrane, its preparation method, and its application in water treatment, belonging to the field of environmental organic pollution remediation technology. The electrically controlled enrichment catalytic membrane comprises a substrate layer and a copolymer coating layer with reversible electro-oxidation-reduction properties. The substrate layer is a titanium suboxide conductive ceramic membrane with a pore size of less than 1 micrometer, and the copolymer coating layer is an organic blend polymer TMA containing nitro radical functional groups. x -co-TMPMA (1‑x) Where x% represents the degree of oxidation. This invention also provides an application of the above-mentioned electrically controlled enrichment catalytic membrane in water treatment for the removal of organic pollutants. The electrically controlled enrichment catalytic membrane is used as a filter membrane in an electrochemical water treatment device. Two filter membranes are connected to the two poles of an AC power system, with the positive and negative poles reversing during a cycle. The polluted solution is controlled to flow sequentially through the two filter membranes. By adjusting the positive and negative bias parameters on the filter membranes, hydrophobic organic pollutants in the polluted solution are adsorbed and oxidized for removal. This method is energy-saving, environmentally friendly, and easy to operate.

The invention provides an ultrasonic automatic cleaning ceramic membrane filter, and belongs to the technical field of filtration and separation, the ultrasonic automatic cleaning ceramic membrane filter comprises a shell unit and a tubular ceramic membrane arranged in the shell unit, the shell unit is internally provided with at least two partition plates, the partition plates divide the internal space of the shell unit into at least three spaces, and the tubular ceramic membrane is arranged in the shell unit. The connecting assembly is used for limiting the position of the vibration unit, the vibration unit is used for generating vibration energy, and the vibration energy is transmitted to the tubular ceramic membrane through liquid in the filtering cavity, so that the effect of cleaning the tubular ceramic membrane is achieved; according to the ceramic membrane filter with the ultrasonic automatic cleaning function, a variable magnetic field is generated through the electromagnetic coil outside the shell unit, the vibration unit in the filter cavity can generate telescopic deformation according to the magnetic field, the telescopic deformation generates vibration waves, and the vibration waves transmit energy to the surface of the tubular ceramic membrane through a clean water medium in the filter cavity; and therefore, the effect of cleaning blockages is achieved.

The invention relates to the technical field of wastewater treatment, and discloses a ceramic membrane catalyst and a preparation method thereof as well as a ceramic membrane catalytic reactor and application thereof, the ceramic membrane catalyst comprises a ceramic membrane and bismuth oxide loaded on the ceramic membrane, and the loading capacity of the bismuth oxide is 1-100g / m < 2 >. By adopting the loaded ceramic membrane catalyst, the dissolution of ozone can be enhanced, the utilization rate of ozone is improved, the operation cost of an ozone process is reduced, and the treatment effect of the ozone process is improved.

This invention belongs to the field of membrane material preparation and modification technology, and relates to a method for pre-wetting the surface of a hydrophobic ceramic membrane. The ceramic membrane is immersed in a cyclohexane solution of perfluorooctyltrimethoxysilane for 3-4 hours. After immersion, the ceramic membrane is dried in an oven. An ethanol solution is forced to circulate through the ceramic membrane to pre-wet the separation layer. The pre-wetting process proposed in this invention is simple, highly controllable, and easily scaled up to pre-wet multi-channel hydrophobic ceramic membranes. This invention achieves coarse adjustment of the wetting degree by controlling the concentration of the ethanol-water solution, and further fine adjustment by combining the circulation time of the ethanol-water solution, thus achieving more precise control of the wetting degree and optimal improvement of the uniformity of the hydrophilic coating.

The invention discloses a high-flux silicon carbide ceramic membrane filtering device, and belongs to the technical field of filtering equipment, the high-flux silicon carbide ceramic membrane filtering device comprises a guide cylinder unit and a rotating membrane cylinder unit, a dead end filtering station and a cross flow filtering station are arranged in the guide cylinder unit, and the rotating membrane cylinder unit is rotatably mounted in the guide cylinder unit; the two groups of silicon carbide ceramic membrane cylinders are rotatably mounted in the rotating membrane cylinder unit, pollutants on the surface of a membrane layer are cleaned by circularly switching the working states of the ceramic membrane cylinders, and the two groups of silicon carbide ceramic membranes can be always kept in a rotating state in the filtering process, so that the pollutants are uniformly distributed on the membrane layer; the deep deposition of pollutants in a specific area during dead-end filtration is avoided, and meanwhile, the two groups of membrane bodies are circularly switched between a dead-end filtration station and a cross-flow filtration station, so that the formation of a filter cake layer is effectively reduced, and the device is ensured to be in a high-membrane flux state.

A ceramic membrane including a feed flow inlet, a retentate flow outlet, a permeate flow outlet, a membrane interface portion. The membrane interface portion include a feed flow channel fluidly coupled to the feed flow inlet and to the retentate flow outlet and permeate flow channel fluidly coupled to the retentate flow outlet, wherein the membrane interface portion is operable to allow for fluid communication between the feed flow channels and the permeate flow channels through a membrane portion, and wherein the ceramic membrane has an open porosity of at least 10%. Also provided is a process for preparing the ceramic membrane by additive manufacture.

The utility model provides a ceramic membrane device for wastewater treatment, which relates to the technical field of ceramic membrane filtration and comprises a filter cartridge, a water inlet is arranged on the surface of the rear end of the filter cartridge, a cartridge cover is mounted on the front surface of the filter cartridge, a fixing rod is fixedly mounted on the inner surface of the cartridge cover, and a plurality of plate-shaped ceramic membranes are mounted in the middle of the fixing rod at equal intervals. According to the device, a servo motor drives a gear to rotate, so that the gear drives a plurality of gear teeth to rotate, and a plurality of barrel covers can rotate, so that a plurality of filter cartridges can be cleaned, the filter cartridges can be cleaned, and the filter cartridges can be cleaned. At the moment, a plurality of plate-shaped ceramic membranes are driven to rotate at the same time, so that the scraping plates scrape off foreign matters adhered to the surfaces of the plate-shaped ceramic membranes, at the moment, the liquid outlet is opened, the scraped foreign matters fall off from the liquid outlet, and the device can be used for conveniently cleaning the plate-shaped ceramic membranes. The filtering effect is better.

The invention provides a ceramic flat sheet membrane end seal bonding surface roughening treatment device, and relates to the technical field of flat sheet ceramic membrane manufacturing, the ceramic flat sheet membrane end seal bonding surface roughening treatment device comprises a fixing plate, two grooves are formed in the outer wall of the fixing plate, connecting rods are slidably connected to the positions, corresponding to the grooves, of the outer wall of the fixing plate, and fixers are fixedly connected to the outer walls of the connecting rods; a pressure sensor is installed on the outer wall of the bottom end of the fixator, supporting plates are fixedly connected to the outer walls of the two sides of the fixing plate, adjusters are installed on the outer walls of the supporting plates, adjusting rods are fixedly connected to the outer walls of the adjusters, and a plurality of threaded holes are formed in the outer walls of the adjusting rods. According to the device, the groove structure of the continuous sinusoidal waveform structure similar to the gecko sole line is adopted, the binding force between the polymer and the plastic end seal can be improved to a great extent, the pressure sensor and other structures are additionally arranged, the machining state of the device can be detected in real time, and therefore the practicability of the device is higher.

The invention relates to the technical field of catalysis, in particular to a green preparation process for synthesizing 4 '-chloro-2-aminobiphenyl through a membrane method.A palladium-based catalytic membrane is prepared through an impregnation method, by means of the multi-pore-channel advantage of a ceramic membrane, active components can be well distributed on the surface and in the membrane, contact of a reaction substrate and active sites is promoted, and the catalytic activity of 4'-chloro-2-aminobiphenyl is improved. The reaction effect is enhanced, the reaction efficiency is improved, the preparation process is simple, the preparation environment is mild, and large-scale production can be realized; meanwhile, the 4 '-chloro-2-aminobiphenyl is prepared by adopting a method for carrying out Suzuki-Miyaura coupling reaction by adopting the catalytic membrane, tedious steps in the traditional industry are omitted, compared with a traditional heterogeneous catalyst, the trouble of recovery is avoided, the cost is saved, the harm to the environment is greatly reduced, and compared with the prior art, the 4'-chloro-2-aminobiphenyl has a wide application prospect.

A pressure sensor and a pressure interface are disclosed. The pressure sensor comprises: a pressure interface, wherein the pressure interface comprises a cylindrical ceramic base and a ceramic diaphragm arranged at one end part of the ceramic base; the ceramic diaphragm is connected with the ceramic base, the strain gauge is connected with the ceramic diaphragm, and the ceramic base and the ceramic diaphragm are integrally manufactured. As the pressure sensor adopts the ceramic base and the ceramic diaphragm which are integrated, additional assembly and sealing are not needed, the risk of leakage is avoided, and the cost is low at the same time. Moreover, the pressure sensor is made of a ceramic material which is in contact with the pressure medium, so that the pressure sensor can be applied to corrosive pressure media and the like.

The utility model relates to the technical field of production forming equipment, and discloses ceramic membrane production forming equipment which comprises a tank body, a main stirring frame and two auxiliary stirring frames are arranged in the tank body, a PLC (programmable logic controller) is fixedly mounted on the outer circular wall surface of the tank body, and the ceramic membrane production forming equipment further comprises a scraping component arranged on the top surface of the tank body, the scraping assembly is used for scraping substances sinking to the bottom and comprises a plurality of limiting holes, the limiting holes are all formed in the top face of the tank body, moving frames are movably connected into the limiting holes in a sleeved mode, and the tank body, the auxiliary stirring frame, the fluted disc, the gear and the limiting holes are used in cooperation. The effect of scraping and stirring slurry sinking to the bottom of the tank body can be achieved, the slurry can be shoveled up when the slurry reaches the bottommost part by moving the auxiliary stirring frames and the main stirring frame up and down while rotating, and the two auxiliary stirring frames rotate oppositely, so that the stirring effect on the slurry is guaranteed, and the slurry can be fully stirred.

The utility model discloses a spraying device for flat plate ceramic membrane production, and particularly relates to the technical field of ceramic membrane spraying, the spraying device comprises an angle adjusting mechanism, an air pump is fixedly installed in the angle adjusting mechanism, the angle adjusting mechanism comprises a fixing shell, a driving motor is fixedly installed in the fixing shell, and the driving motor is connected with the air pump. And the top end of an output shaft of the driving motor is fixedly connected with a main gear, and one side of the main gear is meshed with a linkage gear. According to the spraying device for flat plate ceramic membrane production, after a ceramic membrane body is adsorbed and fixed through a suction cup, a driving motor drives a main gear and a linkage gear to rotate, so that a movable block drives the suction cup to rotate through a clamping gear and a toothed belt, and the suction cup drives the ceramic membrane body to adjust the angle; and then the ceramic membrane body is obliquely sprayed, so that the situation that excessive paint is accumulated in partial areas due to gravity during vertical spraying is avoided, and the uniform spraying effect of the spraying device for flat plate ceramic membrane production is improved.