181results about "Ion-exchange process apparatus" patented technology

This invention provides a system and method for removing high and low boiling points in polysilicon production. The system includes a first distillation column comprising a top rectifying section, a bottom stripping section, and a separation section between the rectifying and stripping sections, all of which are sequentially interconnected. The separation section includes a pre-fractionation section and a main fractionation section arranged side-by-side but not interconnected. The main fractionation section includes, from top to bottom, a first main fractionation section and a second main fractionation section that are interconnected. The pre-fractionation section has a low-boiling material inlet, the stripping section has a bottom outlet, and the first main fractionation section has a first outlet. The outlet of the disproportionation fixed-bed reactor is connected to the low-boiling material inlet. The second distillation column has a high-boiling material inlet and a top outlet, and the bottom outlet of the stripping section is connected to the high-boiling material inlet. The first outlet and the top outlet of the second distillation column are respectively connected to an adsorption column.

An ion filter, a fuel cell system including the ion filter, and a fuel cell vehicle including the ion filter are provided. An ion filter can include a first cartridge including a first type of exchange resin, a second cartridge including a second type of exchange resin, and a third cartridge including a third exchange resin, wherein the third exchange resin is a mixture of the first type of exchange resin and the second type of exchange resin.

This invention discloses a covalent organic framework material for selective solid-phase adsorption and separation, its preparation method, and its applications. The material is prepared by polycondensation reaction of electron-deficient triazine rings with short-chain linkers such as hydrazine hydrate, forming a layered structure with a high specific surface area of ​​602 m² / g and a concentrated pore size of 2.0 nm to 3.0 nm. This structure exhibits high adsorption capacity (up to 1.0 mg / g), rapid adsorption kinetics, and excellent selectivity for PAHs in organic solutions through strong π-π interactions and pore confinement effects. The preparation process is simple and the conditions are mild. The material has good thermal stability (>300℃), and its performance retention rate is higher than 92% after 5 cycles. When applied to the solid-phase adsorption of PAHs in petroleum products such as lubricating oil and white oil, it effectively eliminates matrix interference, allowing direct analysis without complex purification steps after adsorption. This overcomes the limitations of traditional materials such as silica gel and activated carbon, which have weak adsorption capacity and require cumbersome post-treatment, providing a new high-performance adsorption material solution for the efficient detection of trace PAHs in petroleum products.

This invention discloses a process for preparing high-purity vinyl sulfite using a jet-type loop reactor. Based on the jet-type loop reactor, it employs multiple catalytic systems, using ethylene oxide and sulfur dioxide as raw materials, combined with relevant solvents. This invention relates to the field of vinyl sulfite technology. This process for preparing high-purity vinyl sulfite using a jet-type loop reactor enhances gas-liquid mass transfer through an external circulation jet-type loop reactor. Combined with optimized raw material pretreatment, the reaction cycle is shortened to 2.5-3.0 hours, improving efficiency by more than 50% compared to batch processes. The entire process is continuous, with equipment utilization exceeding 85%, suitable for large-scale production of tens of thousands of tons per year. It addresses the shortcomings of existing processes in terms of scalability, achieving high production efficiency and significant scalability advantages. Furthermore, the entire process is a closed loop, preventing sulfur dioxide leakage. Excess sulfur dioxide is recovered, and solvents are recycled, reducing pollutant emissions by more than 80%.

This invention relates to the field of lithium extraction from lithium precipitated mother liquor, and provides a method for preparing battery-grade lithium chloride from lithium precipitated mother liquor, comprising: S1 cooling the lithium precipitated mother liquor and then performing precision filtration to remove solid particles; S2 adding a crown ether additive to the lithium precipitated mother liquor after filtration in step S1 to obtain a pretreated mother liquor; S3 performing multi-stage extraction on the pretreated mother liquor using a lithium extractant to obtain a loaded organic phase; S4 first performing multi-stage washing on the loaded organic phase with a mixed washing liquid, and then back-extracting to obtain a lithium chloride solution; S5 sequentially subjecting the lithium chloride solution to resin adsorption for oil removal and evaporation crystallization to obtain a battery-grade lithium chloride product. This method reduces sodium activity from the source by adding a crown ether additive in the extraction stage to reduce sodium co-extraction, and simultaneously adds a sodium replacement additive in the washing stage to chemically complex residual sodium ions to improve the efficiency of single-stage washing, thereby reducing the number of extraction stages and washing stages, significantly reducing equipment investment and operating costs compared to traditional processes.

In accordance with at least one aspect of this disclosure, a method for preparing a patient for a diagnostic procedure and / or for receiving a therapy using a disease targeted drug is provided. The method can include the steps of a) identifying one or more soluble targets detectable in plasma of the patient; and b) extracorporeally removing the soluble targets from the plasma of the patient. Extracorporeally removing the soluble targets from the plasma of the patient can include using plasmapheresis or immunoadsorption to prepare a patient for a procedure using disease targeted treatment or diagnostics. Additionally, or alternatively, dose modulation can be used to proportionally increase the concertation of the diagnostic / treatment agent relative to the concentration of the soluble target in the blood, improving the outcome treatment and diagnostic procedures over conventional methods.

The application discloses a kind of synthesis methods of high-purity electronic grade sodium hypophosphite, dilute phosphine gas is passed into to the mixed solution of sodium hypochlorite and sodium hydroxide that has been pre-cooled with sufficient stirring, and sodium hydroxide is added to carry out reaction;After reaction is completed, filtration, concentration, crystallization, separation are carried out, and the obtained product is purified by resin to obtain high-purity electronic grade sodium hypophosphite product.Compared with the traditional "yellow phosphorus-lime-soda" oxidation-reduction method for preparing industrial grade product and then preparing high-purity electronic grade sodium hypophosphite, the product purification difficulty of the application is low, by using 7N grade ultra-high purity phosphine without any metal impurities, the problem that arsenic, silicon, germanium, nickel, chromium and other metal impurities cannot be completely removed by traditional process can be effectively solved.In addition, the application also has the advantages of effectively solving the problem of three wastes, high recycling rate of by-products, high economy and the like.

This technology provides an increased degree of flexibility in the placement of ion exchangers. [Solution] The ion exchanger comprises a main body and a cylindrical case that houses the main body. The case has a first case section having at least one of an inlet for the cooling medium to flow in and an outlet for the cooling medium to flow out, a second case section having a fixing section for fixing the ion exchanger to an object to which it is attached, and a rotation mechanism that allows the first case section and the second case section to rotate relative to each other.

The utility model discloses a separation and purification device based on macroporous resin, and relates to the technical field of separation and purification, the separation and purification device based on macroporous resin comprises a chromatographic column, the chromatographic column is provided with a chromatographic structure convenient for separation and purification, the chromatographic structure comprises a feed port, a fixed base and a circular truncated cone flow guide ring, the feeding hole is fixedly formed in the upper end part of the chromatographic column, the fixed base is positioned at the lower end part of the chromatographic column, each circular truncated cone flow guide ring is positioned on the inner side wall of the chromatographic column, an adjusting valve is arranged at the lower end part of the chromatographic column, and two column mounting grooves are formed in the upper end part of the feeding hole. The chromatographic column is arranged to purify anthocyanin, the purity of the obtained anthocyanin is higher than that of unpurified anthocyanin, toxic organic solvents are avoided in the whole process, only ethyl alcohol is used, environment friendliness is achieved, resin can be repeatedly used, and the production cost is reduced.

This invention provides a system and method for removing high and low boiling points in polysilicon production. The system includes a first distillation column comprising a top rectifying section, a bottom stripping section, and a separation section between the rectifying and stripping sections, all of which are sequentially interconnected. The separation section includes a pre-fractionation section and a main fractionation section arranged side-by-side but not interconnected. The main fractionation section includes, from top to bottom, a first main fractionation section and a second main fractionation section that are interconnected. The pre-fractionation section has a low-boiling material inlet, the stripping section has a bottom outlet, and the first main fractionation section has a first outlet. The outlet of the disproportionation fixed-bed reactor is connected to the low-boiling material inlet. The second distillation column has a high-boiling material inlet and a top outlet, and the bottom outlet of the stripping section is connected to the high-boiling material inlet. The first outlet and the top outlet of the second distillation column are respectively connected to an adsorption column.

This invention relates to a copper-modified NaX molecular sieve adsorbent, its preparation method, and its application, and relates to the field of adsorption and separation materials technology. The preparation method of this invention includes the following steps: (1) mixing powdered NaX molecular sieve and copper ammonia solution to obtain a mixed suspension; filtering the mixed suspension under reduced pressure to separate the solid product; washing and filtering the solid product to obtain a wet molecular sieve solid; (2) vacuum drying the wet molecular sieve solid; grinding the solid to obtain a powder sample; and calcining the powder sample at a constant temperature to obtain the copper-modified NaX molecular sieve adsorbent. The preparation method of this invention significantly simplifies the process flow, reduces production costs, and produces a copper-modified NaX molecular sieve adsorbent with high pore utilization and high active site density, significantly improving the adsorption performance of NaX molecular sieve for boron and phosphorus impurities.

This invention belongs to the field of traditional Chinese medicine processing and testing technology, and relates to an ultrasonic-assisted extraction method and content determination method for acrylamide in processed Polygonatum sibiricum. The optimal extraction process for acrylamide from processed Polygonatum sibiricum is as follows: 1.0 g of Polygonatum sibiricum, 6 mL of a mixed solution of ethyl acetate and methanol as the extractant (volume ratio 6:4), ultrasonic time of 15 min, and ultrasonic power of 180 W. After purification using a C18 solid-phase extraction column, the acrylamide content was found to be 0.498 ± 0.0015 μg / g. This method is stable and reliable. Compared with a single water extractant, using a mixed solution of ethyl acetate and methanol as the extractant significantly improves the extraction efficiency, and the operation is simple, showing good market application prospects and industrial applicability.

The application discloses a method for capturing and transferring pentaazol anions based on cationic covalent organic frameworks. The method adds hydrogen-bond cationic COFs into a pentaazol anion salt solution system, filters after adsorption for a certain time, and adds the collected cationic COFs adsorbed with the pentaazol anion salt into methanol to release the pentaazol anions. The method is simple, safe, does not cause metal pollution, and is beneficial to the stability of the pentaazol anions.

The present invention provides an ion exchange membrane that has excellent electrolyte resistance and battery characteristics, and facilitates the manufacture of electrochemical cells. [Solution] An ion exchange membrane comprising a polybenzimidazole or a derivative thereof represented by formula (1), wherein the ion exchange membrane comprises a dense layer and a porous layer, the dense layer is provided at either end of the porous layer, and the thickness of the dense layer is 0.1 to 10 μm. JPEG2026104048000009.jpg46146 (In general formula (1), R 1 R is a tetravalent aromatic unit that can form an imidazole ring. 2 (where X represents a divalent aromatic group, and Y represents a group containing an anionic functional group, and Y represents a group containing a hydrogen atom or a cationic functional group.)

This invention discloses a waste acid recovery method based on ion exchange separation technology, belonging to the field of waste acid recovery technology. The method includes the following steps: passing a waste nitric acid solution containing aluminum and chloride ions through a cation exchange resin to adsorb aluminum ions; adding silver nitrate solution to the adsorbed waste liquid to allow silver ions to react with chloride ions to form silver chloride precipitate; filtering out the silver chloride precipitate to obtain a nitric acid solution; removing the silver chloride precipitate, using aluminum foil as a reducing agent, and adding a small amount of hydrochloric acid to reduce the silver chloride to silver powder; washing the reduced silver powder and dissolving it in nitric acid to obtain a silver nitrate solution for recycling. This waste acid recovery method based on ion exchange separation technology solves the problem of excessive total nitrogen in wastewater discharge; it also significantly reduces waste acid treatment costs and improves economic efficiency.

An ion exchanger filtration device includes a housing comprising a cover and at least one inlet opening and at least one outlet opening for a medium, the housing extending in an axial direction; and an ion exchanger cylinder enclosed by the housing and including one or more inlet ports at an upstream end, and a circumferentially extending wall enclosing a container filled with ion exchanger material, the wall including one or more outlet ports at a downstream end opposite the upstream end. A main flow path through the ion exchanger cylinder is provided for the medium between the one or more inlet ports and the one or more outlet ports. The housing also includes a bypass passage between the inlet and outlet openings for allowing the medium to bypass the ion exchanger cylinder. The ion exchanger cylinder also includes a closing element configured to close the bypass passage when the ion exchanger cylinder is installed in the intended installation position of the housing.

An anion exchange membrane and a method for producing the same are disclosed. The anion exchange membrane comprises a porous polymer support; and an electrolyte containing an anion exchange polymer; wherein the electrolyte is located on the surface and in part within the pores of the porous polymer support; and the anion exchange polymer is also a crosslinking product of a composition containing a crosslinkable monomer represented by the following chemical formula 1 and an ionic monomer represented by the following chemical formula 2: JPEG2026516927000016.jpg56170 In chemical formulas 1 and 2, A, R1, R2, R3, R4, X - , Y - p, q, and r are as disclosed in the specification, respectively.

The application discloses a kind of purification process systems and methods of glycerin for injection, system includes ion exchange unit, oxidation unit, water removal unit, decolorization unit, purification unit in turn fluid communication, ion exchange unit receives upstream industrial glycerol raw material, the glycerol product that the purification unit exports meets the standard for injection.Industrial glycerol is treated in ion exchange unit in turn, and the treatment of removing aldehydes and reducing substance is carried out in oxidation unit, water removal unit is handled in water removal unit, decolorization unit is handled in decolorization unit, and after the deep purification treatment of purification unit, industrial glycerol can be purified to glycerol product meeting each index requirement of glycerol (for injection) in Chinese Pharmacopoeia (2025 edition).

The application discloses modified silica chromatographic microspheres and a preparation method thereof, and relates to the technical field of chromatographic fillers. In the preparation of the modified silica chromatographic microspheres, monodispersed silica is prepared by using a sol-gel method; the monodispersed silica is subjected to template dissolution and induced re-deposition by using octadecyl trimethyl ammonium chloride as a template agent to prepare primary mesoporous core-shell silica; the primary mesoporous core-shell silica is subjected to template dissolution and induced re-deposition by using a composite template agent to prepare secondary mesoporous core-shell silica; the secondary mesoporous core-shell silica is subjected to surface modification by using gamma-aminopropyl triethoxysilane to prepare amino-modified silica; and the amino-modified silica is reacted with dehydroabietyl acid, ethyl isocyanoacetate and aldehyde functional monomers to prepare the modified silica chromatographic microspheres. The modified silica chromatographic microspheres prepared by the application have the advantages of large specific surface area, good shell stability and high column efficiency.

The application belongs to the technical field of environmental functional materials and rare metal recovery, and more particularly relates to a functionalized acrylic fiber-based porous fiber adsorption material and a preparation method and application thereof. First, polyacrylonitrile, a water-soluble porogen and a surfactant are dissolved in an organic solvent to form a uniform precursor solution through ultrasonic dispersion, and an acrylic fiber-based nanofiber precursor is prepared through electrospinning technology. Then, the porogen is removed through water washing to form a hierarchical pore structure. Finally, a chemical grafting reaction is performed, and a reagent containing amino and phosphonic groups is used to cooperatively modify the surface of the fiber to introduce N, P and O multi-dentate coordination groups. The adsorption material prepared by the application has high specific surface area, rich active sites and excellent mechanical strength, solves the problems of low adsorption capacity and slow mass transfer rate of traditional adsorption materials in rare earth recovery, has good adsorption effect on rare earth ions, can be repeatedly used for multiple times, and is particularly suitable for recovering rare earth resources from low-concentration solutions.

The present application provides a kind of low-loss transmission dense moving bed device and its operating method, including adsorption tank, regeneration tower and displacement cleaning tank, adsorption tank, regeneration tower and displacement cleaning tank use the moving bed operation mode of lower liquid inlet upper liquid outlet, and the top of at least two of adsorption tank, regeneration tower and displacement cleaning tank is provided with gas inlet, by inputting gas with pressure, for resin delivery provides downward power, and the transfer of resin is optimized from gravity discharge to gravity+power dual-action discharge, so that resin transfer delivery is stable, not easy to block;Can not need additional transport water.Additionally, resin breakage problem caused by high-speed impact, mechanical collision and other factors can be avoided from the root;Realize low-loss transmission.

The invention pertains to a device for determination of a catalyst state in a chemical reactor and to a method for detecting a catalyst state under in situ reaction conditions. A reactor is provided with a solid catalyst provided in a reactor chamber. A fluid sample is taken from the reactor chamber and is transferred to a sample chamber. The temperature at the extraction site of the sample in the reactor chamber is determined and the temperature of the sample chamber is adjusted to the same temperature. A small amount of the catalyst provided in reactor chamber is provided in sample chamber and is contacted with the sample flow. Spectroscopic information is then obtained on the catalyst provided in sample cell, e.g. by an IR spectrometer.

This invention belongs to the field of ammonium bifluoride purification technology, and specifically relates to a multi-stage filtration mechanism for ammonium bifluoride purification. The mechanism includes a tank with protective components on its outer surface, a discharge port at the bottom, a feed port on one side of the top, a motor in the center of the top, a rotating shaft at the motor's output end, a centrifugal drum at the bottom of the shaft, a flow guide platform below the centrifugal drum, and a bag filter at the bottom of the flow guide platform. This invention, through the cooperation of the motor, centrifugal drum, flow guide platform, bag filter, and activated carbon adsorption plate, enables the filtration mechanism to perform multi-stage filtration, avoiding the problem of poor impurity separation when filtration and purification of ammonium bifluoride in the liquid phase. Furthermore, the cooperation of the protective frame, rubber damping plate, rotating rod, and pressure relief cylinder prevents the surface of the device from easily denting or cracking after external impact.

This application provides a negative pressure, non-destructive resin filling system and method for a condenser. The system includes a resin filling device with a device inlet, a resin outlet, a resin filling hopper, and a circulating water pump. The bottom outlet of the resin filling hopper is connected to the resin outlet, which is connected to the resin filling port of an ion exchanger via a pipe. The device inlet is connected to the drain outlet of the ion exchanger via a pipe. The device inlet is connected to the top of the resin filling hopper via a pipe. A circulating water pump is installed in the pipe between the device inlet and the top of the resin filling hopper to pump the internal cooling water of the ion exchanger out of the drain outlet to create a negative pressure inside the ion exchanger, thereby drawing the resin from the resin filling hopper into the ion exchanger without damage through the resin filling port. After the system is filled with water, the circulating water pump is started to achieve negative pressure, allowing the circulating water to carry the resin from the resin filling hopper into the exchanger without damage, completing the automated filling process.

An ion exchanger filter device (100), in particular for a fuel cell system, the ion exchanger filter device (100) comprising a housing (102) comprising a cover (112) and at least one inflow opening (104) and at least one outflow opening (106) for a medium, the housing (102) extending in an axial direction (80), and an ion exchanger cartridge (10) being enclosed by the housing (102) and comprising one or more inflow ports (34) at an upstream end (20), and a circumferentially extending wall (32) enclosing a receptacle (16) filled with an ion exchanger material (12), the wall (32) comprising one or more outflow ports (18) at a downstream end (21) opposing the upstream end (20). The upstream end (20) comprises a sealing plane (60) providing a sealing contact to the housing (102), the sealing plane (60) being inclined to the axial direction (80) by an angle (70).

The utility model discloses a medicine intermediate product decoloring device relates to medicine intermediate technical field, a medicine intermediate product decoloring device, including jar body, still include: seal cover, dismantle and connect on jar body, sleeve, rotation is connected on seal cover, piston disc, sliding connection is in sleeve, pivot, connect on piston disc, and can follow sleeve synchronous rotation, wherein, one end equal interval fixed connection of hollow pole has multigroup in jar body penetration of pivot, the utility model, hollow pole relies on jar body and rotates, reciprocating motion and airflow disturbance synergistic effect, let medicine intermediate and decoloring agent contact area increase greatly, compared with single stirring mode, contact more comprehensive, more frequently, effectively break the local concentration gradient of material, eliminate mixed dead angle, make decoloring reaction even, promote decoloring efficiency and effect, shorten decoloring time, guarantee product quality stability.