108 results about "Membrane adsorption" patented technology

The invention belongs to the technical field of radioactive wastewater treatment and uranium extraction from seawater, and discloses a high-flux cellulose immobilized tannin membrane adsorption material as well as a preparation method and application thereof. The membrane adsorption material comprises an aldehyde cellulose acetate microfiltration membrane and waxberry tannin which is cured on the microfiltration membrane through gradient cross-linking. The membrane adsorption material provided by the invention keeps a reticular porous structure of a cellulose microporous filter membrane and has the characteristics of high flux and rapid mass transfer, the pure water flux of a single-layer membrane can reach 300 L / (m.h), the treatment capacity of a multi-layer membrane is remarkably increased, large-flow treatment can be realized, and the efficiency of extracting uranium from seawater or uranium-containing wastewater is remarkably improved.

The present invention discloses a diaphragm adsorption device, comprising a mounting seat, a shaping outer sleeve, a shaping inner sleeve, and a suction cup for adsorbing diaphragms. The mounting seat comprises a support plate and an air pipe fixedly connected to the upper side of the support plate. The shaping outer sleeve comprises a connecting seat and an extrusion sleeve. The connecting seat is provided with a mounting port, a sliding sleeve fixedly connected to the mounting port. The shaping inner sleeve comprises a pipe portion and a shaping portion. The pipe portion is connected to the air pipe, the pipe portion passes through the sliding sleeve and is slidably connected to the sliding sleeve. The lower side of the shaping portion forms an extrusion edge arranged around the suction cup. The height of the lower side of the extrusion edge is higher than the height of the lower side of the suction cup. The shaping portion is connected to the connecting seat via a spring. A first slide groove is formed in the pipe portion. A ejector pin is slidably connected in the first slide groove. The ejector pin is provided with an air passage running through the upper and lower ends of the ejector pin. The lower end of the ejector pin is located on the lower side of the suction cup. The present invention provides a diaphragm adsorption device, in which the diaphragm is not easily offset from the bottle mouth.

The invention discloses a process for optimizing the crystal habit of an acesulfame potassium product. The process comprises the following steps: heating and dissolving an acesulfame crude product and a solvent to prepare a supersaturated solution, firstly, sequentially carrying out activated carbon adsorption and membrane adsorption for decoloration, then cooling at a certain rate for cooling crystallization, adding a certain amount of primary seed crystal in a nucleation stage 1, adding a certain amount of secondary seed crystal in a nucleation stage 2, and after the temperature of the material is reduced to 10 DEG C, cooling and crystallizing to obtain the acesulfame potassium crystal. And centrifugally drying the material to obtain the acesulfame potassium stable crystal form product. According to the present invention, the suitable solvent and the suitable cooling rate are selected, and the seed crystal is added during the cooling crystallization process, such that the content of the metastable crystal form is significantly reduced, the content of the stable crystal form is increased, and the particle size distribution, the yield and the purity of the acesulfame potassium product are effectively improved so as to solve the caking problem of the acesulfame potassium product during the storage process.

The invention provides a method for detecting the dissolution rate of drug nanocrystals based on an aggregation-induced fluorescence probe, and belongs to the field of drug analysis. Comprising the steps of construction of an AIE probe-nanocrystal hybrid system, establishment of a fluorescence intensity-drug solid content standard curve, determination of the dissolution rate of the nanosuspension and the like. The amount of undissolved medicine is directly reflected through a solid-state fluorescence signal, and the adsorption error of a filter membrane is thoroughly eliminated; the microplate reader can online monitor the change of the fluorescence intensity of a plurality of samples along with time at one time; meanwhile, the detection method can be compatible with standard dissolution devices such as a paddle method; complex test conditions such as pH gradient dissolution are supported; compared with the prior art, the detection efficiency of the final implementation effect is improved by 5-30 times, the manual intervention of operation is reduced by 80%, the equipment and solvent cost is reduced by 80%, and the HPLC is only used for the establishment process of the fluorescence intensity-drug solid content standard curve; and the problem of too long time consumption of HPLC detection is substantially solved.

The invention discloses a method for simultaneously determining 54 kinds of hair dyes in hair dye products by high-performance liquid chromatography-quadrupole / electrostatic field orbital trap high-resolution mass spectrometry, using 70% methanol ultrasonic extraction, 25% methanol (containing and excluding D-isoascorbic acid) solvent dilution sample, and matching the quantitative method of solvent mark line, improving the stability of hair dye and the accuracy of measurement results; by selecting chromatographic column and selecting ammonium fluoride solution-acetonitrile as mobile phase, the separation of all isomers is guaranteed, and the sensitivity of negative ion monitoring components such as phenol and hydroquinone is improved; by simultaneously scanning positive and negative ion modes and data-dependent secondary ion full scanning, 54 kinds of hair dyes are accurately determined and quantified. This method solves the problems of stability, separation and specificity, difficulty in filtration and membrane adsorption in the actual detection process of hair dye, makes up for the problem that the existing literature and standard hair dyes are not fully covered, and is of great significance to the quality control of hair dye products.

The application belongs to the technical field of membrane and adsorption separation material preparation, and particularly relates to a MOFs composite film rich in nitrogen atoms and a preparation method and application thereof. The preparation method comprises the following steps: firstly, synthesizing UiO-66-NH2, introducing aldehyde groups on the surface of the UiO-66-NH2 through a condensation reaction, then performing amino functionalization, and finally mixing and crosslinking to obtain the MOFs film rich in nitrogen atoms. The MOFs composite film prepared by the application has good uniformity, high mechanical strength and good flexibility, and is simple and convenient to form into a film, can be used as a separation membrane for adsorbing and removing heavy metal ions in water, and can also be used for enriching and recycling rare and precious metals in metallurgical wastewater. The MOFs composite film prepared by the application has high selectivity and large adsorption capacity for molybdenum ions, and has very significant application value.

A chromatography system is provided. The chromatography system is configured to process a feed fluid containing a plurality of components, wherein at least one component of the plurality of components of the feed fluid is a target component. The chromatography system comprises: a flow path comprising a plurality of fluid control components configured to control a fluid flow; a stationary phase, wherein the stationary phase is at least one membrane adsorber connected to the flow path and the stationary phase is configured to isolate the target component. The flow path is configured such that harvesting of the target component is optimized.

The invention belongs to the technical field of functional materials, and discloses an amidoxime-based chitosan microporous membrane adsorption material as well as a preparation method and application thereof. According to the amidoxime-based chitosan microporous membrane adsorption material, a chitosan microporous membrane is used as a matrix, and amidoxime groups are grafted on the matrix; the adsorption material has a microporous structure, the average pore size is 0.05-0.3 mu m, and the bacteriostasis rate on escherichia coli and staphylococcus aureus is not lower than 90%. The amidoxime group introduced in the invention has specific chelating ability to uranyl ions. Even in a simulated salt lake brine environment in which high-concentration competitive cations exist, the membrane adsorption material can still maintain high-selectivity adsorption on uranium, the extraction rate can reach 86% or above, and extremely high ion interference resistance is shown. The broad-spectrum antibacterial property of the chitosan base material is creatively utilized, so that the antibacterial rates of the obtained membrane adsorption material on escherichia coli and staphylococcus aureus exceed 90%.

The invention discloses a preparation method and application of a membrane electrode based on an anode catalyst coating film, and belongs to the technical field of membrane electrode preparation and alkaline water electrolysis hydrogen production, and the preparation method comprises the following steps: (1) dispersing an anode catalyst, a binder and an ionomer into a solvent, and carrying out ultrasonic treatment to prepare a catalyst dispersion liquid; (2) adsorbing the anion exchange membrane on a heating plate, and heating the heating plate to a set temperature; spraying the catalyst dispersion liquid on an anion exchange membrane to obtain an anion exchange membrane for adsorbing an anode catalyst; (3) clamping the anion exchange membrane for adsorbing the anode catalyst between two pieces of Teflon cloth, and placing the Teflon cloth between two graphite plates for hot pressing to obtain an anode catalyst coated membrane electrode; according to the preparation method and application of the membrane electrode based on the anode catalyst coating membrane, the problem of substrate interface separation in the traditional catalyst coating substrate technology is effectively solved, so that the ohmic impedance is reduced, and the mass transfer efficiency is improved.

This invention provides a battery separator with ion adsorption capabilities and its preparation method, belonging to the field of new energy battery technology. It solves the problem of battery capacity decay and deterioration of cycle performance caused by ion leaching damaging the SEI film and consuming active lithium. The battery separator of this invention includes a base film and a ceramic coating on at least one surface of the base film. The raw materials for preparing the ceramic coating include porous organic framework materials, metal ion chelating agents, ceramic particulate materials, wetting agents, and binders. This invention significantly improves the dispersion ability of the slurry and shortens the dispersion time by using metal ion chelating agents instead of traditional dispersants. Simultaneously, the use of binders containing specific functional groups crosslinks with the porous organic framework materials and forms a synergistic effect with the chelating agents, thereby jointly enhancing the battery separator's ability to adsorb metal ions. This effectively solves the problem of poor stability in high-energy-density battery systems, thus significantly improving the battery's energy density and cycle life.

The application discloses a high-ionic-conductivity diaphragm and a preparation method thereof. The diaphragm is prepared by using an ultrahigh molecular weight polyethylene as a matrix and a covalent organic framework material as a functional filler through a thermal phase separation method. The introduction of the COF material significantly improves the ionic conductivity, thermal dimensional stability and mechanical strength of the diaphragm, and the diaphragm can be endowed with the characteristics of adsorbing polysulfides and guiding uniform ion deposition through COF channel functionalization. The preparation method is mature in process and easy to scale up production, and the prepared diaphragm is suitable for next-generation high-energy-density and high-safety electrochemical energy storage devices with high performance requirements.

The utility model discloses a kind of flue gas carbon dioxide low-temperature condensation purification systems, it is related to flue gas carbon dioxide processing technical field.The utility model includes, condensing structure, including conveying pipe, condensing box of sleeving in conveying pipe one side outer wall, liquid nitrogen tank located conveying pipe rear side, heat exchange pipe that is snakelike distribution in condensing box interior and outer wall is flat and is communicated with liquid nitrogen tank output end, conveying port that is staggered distribution between heat exchange pipe, the shrink nozzle of annular array distribution in conveying pipe one end and corresponding heat exchange pipe;Drying structure, including cylinder one and cylinder two located condensing box one side, net cylinder located cylinder one and cylinder two interior, drying agent that is granular in net cylinder interior.The utility model is set to condensing section structure, avoid under high temperature CO2 plasticization effect enhancement, polymer chain spacing expansion, support layer and skin layer thermal expansion shrinkage or skin layer peeling, affect carbon dioxide purification process membrane adsorption stability problem.

This utility model discloses a flue gas carbon dioxide membrane adsorption purification device, relating to the field of carbon dioxide membrane adsorption technology. The utility model includes a cold treatment structure comprising a membrane adsorption purification cylinder, a second mixing cylinder connected to the membrane adsorption purification cylinder via a pipe, a first mixing cylinder connected to the second mixing cylinder via a pipe, a pre-cooling cylinder located on one side of the first mixing cylinder, a cooling cylinder and a drying cylinder located below the pre-cooling cylinder and connected via a pipe, a liquid nitrogen tank located in front of the cooling cylinder, a spiral tube connected to the output end of the liquid nitrogen tank and spirally distributed inside the cooling cylinder, a desiccant located inside the drying cylinder, and an air inlet pipe connected to the pre-cooling cylinder and the first mixing cylinder; and a mixing structure comprising an installation shaft located inside the first mixing cylinder and multiple sets of stirring rods arranged in a ring array inside the first mixing cylinder. This utility model, by setting a cold treatment structure, solves the problem that polymer membranes are easily deformed by heat during carbon dioxide membrane adsorption purification, affecting the stability of membrane adsorption purification.

The utility model discloses a fast adsorption membrane adsorption device relates to membrane adsorption device technical field, including membrane adsorption member and drainage member, the drainage member is symmetrically installed at the both ends of membrane adsorption member, and the drainage member one side far away from membrane adsorption member is equipped with the capping member, the membrane adsorption member is equipped with the membrane adsorption member. And the side edge of the membrane adsorption component is connected with the combined component. According to the membrane adsorption device capable of achieving rapid adsorption, drainage components are symmetrically arranged at the two ends of the membrane adsorption component, and an electric turbofan arranged in the structure rotates at a high speed, so that a medium passing through the interior of the whole device can be disturbed, and the drainage effect is achieved; by means of the structure arrangement of the combined component and the combined use of part of structures of the membrane adsorption component, multiple sets of devices can be combined and spliced according to needs, and series combination of the structures is achieved by using the quick-connection valve head in cooperation with the use of a pipeline.

The invention discloses a membrane adsorbing and pasting mechanism and a membrane pasting device with the membrane adsorbing and pasting mechanism. The membrane adsorption mounting mechanism comprises a suspension frame, a pressure head assembly and a tensile elastic piece, the pressure head assembly can be slidably connected to the suspension frame in the vertical direction, an adsorption plate is arranged at the bottom of the pressure head assembly, and an adsorption hole used for adsorbing a membrane is formed in the lower surface of the adsorption plate; the upper end of the tensile elastic piece is connected to the suspension frame, and the lower end is connected with the pressure head assembly and used for suspending the pressure head assembly on the suspension frame. According to the membrane adsorption mounting mechanism module provided by the invention, a product is not easy to crush when a large-area membrane is mounted, and the yield of the large-area membrane mounting is improved.

The invention relates to the technical field of biological detection, and discloses a tetrodotoxin colloidal gold detection card, which comprises a detection box used for packaging a detection assembly, the display groove is formed in the detection box and is used for observing a detection result; the liquid dropping groove is positioned at one end of the detection box and is used for accommodating a to-be-detected sample; and the detection paper is arranged in the detection box, comprises a nitrocellulose membrane, an adsorption pad and a diffusion pad, is provided with a detection area and a control area, and is used for displaying a detection result of tetrodotoxin. By optimizing the size of the gold nanoparticles and an antibody labeling process, the sensitivity and the specificity of the detection card are remarkably improved, and the low-concentration tetrodotoxin can be rapidly and accurately detected. Due to the reasonable particle size and the application of the stabilizer, non-specific adsorption is reduced, the false positive rate is reduced, the reliability and consistency of detection results are ensured, clear detection results can be obtained in a shorter time, and the accuracy of rapid judgment in field application is ensured.

The present application relates to a kind of minoxidil external solution and its preparation process, including 3 portions minoxidil, 30-40 portions ethanol, 5-7 portions propylene glycol, 0.005-0.02 portions antioxidant, 0.1-0.3 portions chelating agent, 58-60 portions purified water.The present application adds suitable antioxidant and chelating agent, so that minoxidil external solution reduces the generation of oxidation reaction in storage and use process, effectively prevents the problem of long-term storage discoloration, and the stability of the minoxidil external solution is high.By improving the formula and filtering process, microporous filter membrane is used for the original liquid, and repeated filtration is at least 2 times, and the filtration pressure and filtration temperature are repeatedly changed every minute;Finally, the amount of minoxidil adsorbed and retained by microporous filter membrane during filtration is very low (adsorption rate is less than 0.5%), which is significantly lower than the existing level, the stability of the effective component of product is high, and the qualified rate of product is significantly improved.

The invention provides an organic solvent purification method, which comprises: (1) contacting an organic solvent with a 3A molecular sieve adsorption column to obtain a first purification liquid, and embedding a carbon quantum dot coating on the inner wall of the 3A molecular sieve adsorption column; (2) contacting the primary purified solution in the step (1) with a 4A molecular sieve to obtain a secondary purified solution; (3) contacting the secondary purified solution obtained in the step (2) with a neutral alumina adsorption column to obtain a third purified solution; (4) adsorbing the third purified liquid in the step (3) through ion exchange resin to obtain a fourth purified liquid; (5) adsorbing the fourth purified solution in the step (4) through a NaA type polyamide molecular sieve membrane to obtain a purified organic solvent; according to the purification method disclosed by the invention, the near-anhydrous organic solvent with high purity not lower than 99.9% can be finally obtained, the moisture content can reach below 50ppm, the fluorescence wavelength is below 240nm, the absorbance is not higher than 0.1%, and the light transmittance is obviously increased.

The application discloses a kind of based on silicon oxide nanowire polyelectrolyte membrane preparation method and high-efficiency adsorption to heavy metal ions, and its technical scheme main points are: a kind of polyelectrolyte membrane preparation method based on silicon oxide nanowire SiO2 NWs, and polyelectrolyte composite membrane can effectively adsorb heavy metal ions.The application is successfully synthesized by using layer-by-layer assembly method (LBL) by suction filtration device, three-dimensional self-supporting membrane with high efficiency, large capacity and controllable morphology.The specific steps include preparation of SiO2 NWs, amination of SiO2 NWs, and suction filtration to form SiO2 NWs membrane combined layer-by-layer self-assembly technology to finally prepare three-dimensional self-supporting polyelectrolyte composite membrane.The application has simple process, safe operation, and certain practical application prospect.The porosity of polyelectrolyte membrane is high, and it has good heavy metal adsorption and desorption capacity, so it is an ideal membrane adsorption material.

This application relates to the technical field of light guide plate film pasting. More specifically, it relates to a light guide plate preparation process, which includes the following preparation steps: S1. Coat an adhesive on the surface of a diffusion film to form a first adhesive area. The first adhesive area is provided with a first air permeation channel to obtain an adhesive diffusion film; S2. Through vacuum heating adsorption, adsorb the adhesive diffusion film on the surface of the cut light guide plate substrate, and connect the diffusion film with the light guide plate substrate to obtain a semi-finished product; S3. Coat an adhesive on the surface of a reflective film to form a second adhesive area. The second adhesive area is provided with a second air permeation channel to obtain an adhesive reflective film; S4. Through vacuum heating adsorption, adsorb the adhesive reflective film on the side of the light guide plate substrate away from the diffusion film and on the side of the light guide plate substrate, and connect the reflective film with the light guide plate substrate to obtain a primary product. Through the process of this application, during the vacuum heating film pasting process of the diffusion film and the reflective film, gas is discharged from the first air permeation channel and the second air permeation channel, reducing the residual bubbles.

The invention relates to the technical field of chemical equipment, in particular to a water content adjusting device suitable for hexafluoroethane detection, which comprises an adjusting main body, a water inlet pipe, a water outlet pipe and a water outlet pipe, the liquid film adsorption module is arranged at the bottom of the adjusting cavity and comprises a liquid film driving assembly, a liquid flowing rotating disc and a liquid supply assembly, the liquid supply assembly distributes adsorption liquid to the surface of the liquid flowing rotating disc, and the adsorption liquid flows along the surface of the liquid flowing rotating disc under the action of centrifugal force generated by rotation of the liquid flowing rotating disc to form a liquid film; the two-stage drying module is arranged in the adjusting cavity and located above the liquid film adsorption module, and the two-stage drying module sequentially comprises a first drying assembly, a switching assembly and a second drying assembly from bottom to top; and the switching assembly is used for enabling the gas dried by the first drying assembly to enter the second drying assembly or be directly output. The water content adjusting device suitable for hexafluoroethane detection can adjust the treatment process according to the water content of hexafluoroethane to be treated, and the detection accuracy and adaptability are improved.

The invention provides an ultra-low stress chip and base membrane separation method, device, equipment and medium, and relates to the technical field of chip transfer, and the method comprises the steps: S1, controlling a membrane adsorption mechanism to move below a chip, adsorbing the base membrane below the chip through the membrane adsorption mechanism, and supporting the base membrane around the chip; s2, a grabbing head is controlled to move to the position above the chip, and the chip is adsorbed; s3, the base membrane below the chip is adsorbed and moved downwards through a membrane adsorption mechanism, so that the chip is separated from the base membrane; and S4, after the chip is separated from the base membrane, controlling the grabbing head to adsorb and take away the chip. According to the invention, a vacuum reverse step-by-step adsorption mode is adopted to realize step-by-step separation of the chip and the base film, so that damage to the chip caused by an ejector pin jacking mode is avoided; and by supporting the base film around the chip, the stress on the peripheral chip can be greatly reduced, so that the defect rate of the chip is reduced, and the chip bonding method can be widely applied to the crystal grain bonding process of various ultrathin chips.

The invention relates to the technical field of gene detection, and discloses a gene detection device for biological genetic engineering, comprising a detection machine, a movable cover is rotatably provided on the rear side of the top of the detection machine, a detection groove is opened on the top of the detection machine, a placement tube is provided in the detection groove, a fixed structure is provided on the placement tube, and a pipe structure is provided on the top of the placement tube. The gene detection device for biological genetic engineering provided by the invention has a fixed structure and a pipe structure, when a sample adding gun is inserted into the placement tube for adding liquid, a rubber sheet will provide resistance, and the dead weight of the liquid in the placement tube will make the placement tube move downward, so that a water guide needle pierces the soft film and extends into the liquid discharge groove to introduce the liquid into the water absorption ring to keep it moist, at this time, the sealing film can be covered by the tension of the liquid on the surface of the water absorption ring to absorb the sealing film, when the pressure cover is opened, the sealing film will not be displaced and cooperates with the rubber sheet to form a secondary seal to avoid aerosol and cross infection.

This invention relates to a method and system for bonding insulating film to a battery pack circuit breaker unit, relating to the field of battery pack manufacturing. The method includes: collecting material distribution data and material property parameters; determining the temperature of the copper busbar region and the plastic region based on the material distribution data and material property parameters; performing differentiated preheating of the product surface in response to the region temperature, and collecting three-dimensional morphological data; calculating a morphological complexity index based on the three-dimensional morphological data; when the morphological complexity index does not exceed a complexity threshold, adsorbing the insulating film onto a bonding fixture, controlling the bonding fixture to move at a bonding angle, and using a roller device located at the rear of the bonding fixture to roll and press the insulating film onto the product surface; when the morphological complexity index exceeds the complexity threshold, immersing the bonding fixture with the adsorbed insulating film and the product in a liquid medium for bonding using a liquid-phase bonding method. This application has the effect of improving the bonding quality of the insulating film.

The invention discloses a recoverable PET composite cover film and a preparation method thereof, and relates to the technical field of PET heat-sealing materials. The recyclable PET composite cover film comprises a PET composite film as well as an isolation part and an adhesive layer which are arranged on the surface of the composite film, wherein the height of the isolation part is greater than the thickness of the adhesive layer. Wherein the adhesive layer is made of a composite adhesive; the PET composite film is prepared by compounding a PET thin film and a barrier film; the barrier film is any one of a PET film, a VMPET film and an alumina-plated PET film. The introduction of the composite adhesive prepared from raw materials such as bio-based polylactic acid glycol, hydroxylated silicon dioxide and an end-capped prepolymer effectively improves the composite strength, recoverability and thermal stability of the PET composite cover film; the introduction of the isolation part at the end far away from the PET composite film improves the inter-film adsorption resistance of the PET composite cover film. Therefore, the method has a wider application prospect.

Liquefaction systems and methods suitable for processing a natural gas stream having a high concentration of hydrogen and wherein the hydrogen concentration may vary in the natural gas stream are disclosed. In some embodiments, the expanded liquefied natural gas stream may be separated into a hydrogen-rich end flash stream and a hydrogen-lean LNG stream, and a second gaseous hydrogen-lean stream may be produced from the hydrogen-rich end flash stream and / or the hydrogen-lean LNG stream. In other embodiments, the pressure of the end flash compressor may be controlled to maintain the hydrogen concentration in a fuel stream, typically the end flash stream, within a desired range. Some embodiments may include pre-or post-liquefaction purification using, for example, membranes, adsorption, partial condensation, distillation, stripping, and electrochemical membranes.

The invention relates to the technical field of sewage treatment, in particular to a wastewater treatment process based on conductive film coupling adsorption and an electro-Fenton technology. Sewage enters the membrane assembly, and dissolved organic pollutants are adsorbed and removed by a nanocrystalline filter functional layer on the surface of the conductive separation membrane; after adsorption saturation of the nanocrystalline filter functional layer, negative bias voltage is applied to the conductive film, an electrolyte solution containing Fe < 2 + > is injected into the film assembly, O2 is aerated through an aeration device, O2 obtains electrons on the conductive film and is reduced to generate H2O2, generated H2O2 reacts with Fe < 2 + > to generate. OH, and adsorbed organic pollutants are oxidized and degraded. The regeneration of the adsorption capacity of the nanocrystalline filter functional layer is realized. According to the method, long-term stable treatment of the wastewater is realized through adsorption-electro-Fenton regeneration cycle operation, membrane separation, adsorption and electrochemical technologies are fused, dissolved organic pollutants can be efficiently removed, and the method has the advantages of being good in treatment effect, low in energy consumption, easy and convenient to operate and the like and is wide in application prospect.

The invention relates to the technical field of solar thermochemical utilization and hydrogen preparation, and discloses a hydrogen separation and CO2 adsorption synergistic reinforced solar methanol reforming hydrogen production system, which integrates a reaction unit and a separation unit, and solves the problem of reaction separation disjunction of a traditional system. In the prior art, most of a reaction unit, a carbon dioxide removal unit and a hydrogen separation unit are independent equipment and need to be connected through pipelines, and the problems of heat loss, reaction inhibition and the like exist. The membrane-adsorption coupling reaction separation unit adopts an integrated reforming reaction kettle structure of a glass tube, a vacuum region, a heat absorption tube, a reaction region and a hydrogen permeable membrane, and four functions of solar heat absorption, methanol steam reforming reaction, carbon dioxide adsorption removal and hydrogen selective separation are integrated and designed in the same equipment; real-time cooperation of reaction and separation is guaranteed from the space structure, the space utilization rate is improved, meanwhile, heat loss and the reaction inhibition effect are greatly reduced, and the overall efficiency of the system is remarkably improved.

The invention discloses a nanofiber membrane gas adsorption device and a desorption regeneration method thereof, the adsorption device is composed of a closed gas treatment bin, a gas adsorption and desorption bin and gas channels, and the gas channels comprise a gas inlet channel, a gas outlet channel, a gas return channel and a recovery channel; a vacuum pump is connected into a gas inlet channel for vacuumizing, raw material gas is connected into the gas inlet channel for ventilation, gas in a gas treatment bin is heated, a fan is turned on, the heated gas enters a gas adsorption and desorption bin from the gas treatment bin through a gas outlet channel, the gas passes through a nanofiber membrane in the gas adsorption and desorption bin, and a gas return ball valve is turned on; the circulation of the gas in the gas treatment bin and the gas adsorption and desorption bin is realized, so that the nanofiber membrane fully adsorbs the target gas; electrifying the heating iron gauze to enable the nanofiber membrane to reach the required desorption temperature, and connecting a recovery channel into a recovery device to recover the target gas; according to the invention, the adsorption and desorption energy consumption of the nanofiber membrane can be reduced, and the adsorption rate of the nanofiber membrane to the target gas is improved.

The invention provides a laser measuring device for intraocular lens size detection, which relates to the field of intraocular lenses and comprises a base, a placement table, a fixing mechanism, a laser measuring instrument and a multi-axis movement mechanism, the placing table is fixed at the top of the base; the fixing mechanism is arranged on the placing table and is used for fixing an intraocular lens body to be tested; the laser measuring instrument is arranged above the fixing mechanism; and the multi-axis movement mechanism is arranged on the base, is in transmission connection with the laser measuring instrument and is used for driving the laser measuring instrument to move in a three-dimensional space. According to the laser measuring device for detecting the size of the intraocular lens, silica gel film adsorption and contact are adopted, scratches, indentations or stress concentration possibly caused by a metal clamp are avoided, the precise optical surface of the intraocular lens is perfectly protected, and real nondestructive clamping is achieved.