170results about "Ion-exchange column/bed processes" patented technology

The invention relates to the technical field of generator set mixed bed operation monitoring, and discloses an operation health degree monitoring method and system based on fine treatment mixed bed resin tracking, the monitoring system comprises a sampling tube, a sampling electric valve, a sampling isolation valve, a cation resin column, a conductivity meter, a mixed bed failure monitoring device and a resin regeneration system; the sampling pipe extends into the central axis of the fine treatment mixed bed; a plurality of sampling pipes are arranged along the height direction of the fine treatment mixed bed, are sequentially connected with a sampling electric valve and a sampling isolation valve, and then are connected in series to one end of a cation resin column; the other end of the cation resin column is connected with the conductivity meter; the mixed bed failure monitoring device is electrically connected with the sampling electric valve, the sampling isolation valve and the conductivity meter; and the resin regeneration system is connected with a water inlet pipeline and a water outlet pipeline of the fine treatment mixed bed through a fine treatment mixed bed resin inlet valve and a fine treatment mixed bed resin outlet valve respectively. Health degree monitoring is realized by establishing a layered monitoring system, and long-term stability of water quality of a power plant system is guaranteed.

The invention relates to polystyrene cation exchange resin as well as a preparation method and application thereof. The preparation method comprises the following steps: dissolving a dispersing agent in a solvent to obtain a dispersed phase for suspension polymerization reaction, uniformly mixing a reaction monomer, a cross-linking agent, a pore-foaming agent and an initiator, and carrying out suspension polymerization reaction under segmented stirring and segmented temperature change to prepare copolymer microspheres; and putting the dried microspheres into a reaction kettle, swelling, carrying out sulfonation reaction through a variable temperature program on the basis to obtain sulfonated microspheres, and carrying out alkali exchange reaction on the sulfonated microspheres to obtain the final product cation exchange resin. Compared with the prior art, the cation exchange resin preparation method provided by the invention has the characteristics of simple and feasible process, easiness in large-scale production, low cost, high specific surface area, high adsorption capacity and high separation efficiency, and is especially suitable for separating and purifying substances containing amino groups or aminoglycosidic bonds.

The invention particularly relates to an intelligent monitoring method and system for the service life of an ion exchange resin mixed bed, and belongs to the technical field of ion exchange resin water treatment. The method comprises the following steps: collecting real-time flow and real-time conductivity of mixed bed inlet water; executing a mixed bed service life intelligent evaluation algorithm, and dynamically estimating a mixed bed exchange capacity consumption rate and a mixed bed residual operation duration; displaying the exchange capacity consumption rate of the mixed bed and the residual running time of the mixed bed in real time in the form of numbers, progress bars or trend curves; and when the exchange capacity consumption rate of the mixed bed and the residual operation duration of the mixed bed are lower than a preset threshold value, triggering an early warning prompt. The system implements the steps of the method. The invention provides the universal, convenient and economic intelligent monitoring method and system for the service life of the ion exchange resin mixed bed, and the real-time dynamic monitoring of the residual exchange capacity of the ion exchange resin mixed bed and the accurate prediction of the residual operation service life are realized.

The present application belongs to a kind of medical radioisotope preparation field, specifically related to a kind of method for extracting lead-212 and bismuth-212 in thorium-232 decay chain, solution containing thorium-232 decay chain material is passed through anion exchange resin column, the solution containing thorium-232 decay chain material includes halogen ion, and the concentration of hydrogen ion in the solution containing thorium-232 decay chain material is greater than 0.01mol / L, lead-212 and bismuth-212 are absorbed by anion exchange resin column, and other nuclides directly pass through anion exchange resin column and are not absorbed, lead-212 and bismuth-212 are desorbed from anion exchange resin column by elution reagent, and lead-212 and bismuth-212 are separated and extracted;The present application can extract lead-212 and bismuth-212 simultaneously, and the extraction speed is fast, the purity is high, and the product is not easy to cause organic pollution.

The utility model belongs to the technical field of ion exchange separation, and particularly relates to a mixed bed ion exchanger which comprises a shell, a resin layer arranged in the shell and a feeding assembly arranged in the shell, the feeding assembly is located on the upper portion of the resin layer, a cleaning assembly is arranged above the feeding assembly, and the cleaning assembly comprises a cleaning pipe. One end of the cleaning pipe is connected with a cleaning liquid inlet, the other end of the cleaning pipe is connected with a flow dividing pipe, three groups of flow dividing branch pipes are arranged on the flow dividing pipe in a surrounding mode, and cleaning balls are arranged at the ends, away from the flow dividing pipe, of the flow dividing branch pipes. The supporting assembly is located at the bottom end of the resin layer, a lower discharging opening is formed in the bottom of the shell, a liquid level pressure transmitter is arranged on one side of the shell in a matched mode, resin can be regenerated when the resin exchange capacity is reduced, and meanwhile abrasion and damage of equipment caused by resin scaling are reduced.

The present invention relates to methods and devices for isolating one or more biomolecules of interest from a biological composition. Specifically, the invention relates to the separation of one or more target biomolecules from a biological composition by dynamic packed bed adsorption using a separation medium comprising porous rod-like particles attached to the target molecules and filtration using a filter having a pore size of at least 1.5 [mu] m.

The utility model provides a resin column purification device for mirabilitum praeparatum toothpaste production. The resin column purification device comprises an extracting solution storage tank, a tubular centrifuge and a chromatographic separation device which are connected in sequence, and water eluent and alcohol eluent output by the chromatographic separation device are respectively introduced into a theanine purification section and a tea polyphenol purification section to obtain purified theanine and tea polyphenol; the theanine purification section comprises a first mixing tank, a cation exchange resin column and a first concentrator which are connected in sequence, output liquid of the acid liquor storage tank is connected into the first mixing tank, and output liquid of the alkali liquor storage tank is connected into the cation exchange resin column; the tea polyphenol purification section comprises a desorption solution storage tank and a second concentrator which are connected in sequence. The resin column purification device for mirabilitum praeparatum toothpaste production provided by the utility model can effectively separate and purify amino acid and tea polyphenol in a tea extract, and improves the treatment capacity of a tea extracting solution.

The disclosure provides preparation and application of an anionic resin with high selective adsorption of ergothioneine, belonging to the field of biochemical engineering. A polyamine-type epoxy weak-base anionic resin is used as a carrier for the first time. Ni atoms are loaded onto the target resin carrier in the form of [NiCl4]2— ions, followed by in situ reduction and rinsing regeneration to prepare a metal Ni nanoparticle-loaded polyamine-type epoxy weak-base anionic resin. The preparation process is simple and the stability is good. The disclosure has strong selective adsorption for ergothioneine in fermentation broths and the facile elution. The disclosure can be widely applied in purification processes for ergothioneine preparation through fermentation and enzymatic catalysis.

The application discloses a processing equipment for crude heparin sodium and belongs to the field of heparin sodium preparation, which comprises a shell, a liquid discharge port arranged at the lower end of the shell, a cover one fixed at the upper end of the shell, a liquid inlet arranged on the cover one, and an adsorption assembly arranged in the shell. The adsorption assembly comprises a plurality of supporting pieces fixed to the inner bottom wall of the shell, a filter cartridge clamped to the upper ends of the supporting pieces, a cavity and a hollow cavity arranged in the filter cartridge, and a cover two fixed to the upper end of the filter cartridge and sealing the cavity. The cavity for placing the resin is arranged in the filter cartridge, the resin is confined in the filter cartridge, direct contact with the high-speed rotating stirring paddle is avoided, and the resin is not damaged by the high-speed rotating stirring paddle. The paddle in the hollow cavity can actively and continuously suck the liquid from the bottom of the filter cartridge, and force the liquid to penetrate the resin bed in the radial direction. The radial flow has a large cross-sectional area, a short path, and a more uniform fluid distribution, and the utilization rate of the resin is higher.

The utility model relates to an ion exchange device for an organic membrane-removing solution, which effectively solves the problem that the ion exchange technology serving as an efficient separation and purification means can theoretically remove various ion impurities in the membrane solution in a targeted manner, so that the cyclic utilization of the membrane-removing solution is realized. The problems that when an existing ion exchange device is applied to organic membrane removing liquid treatment, a runner of a conventional ion exchange device is unreasonable in design, so that the membrane removing liquid is unevenly distributed in the device, part of resin cannot be fully utilized, the ion exchange efficiency is reduced, and the overall treatment effect is greatly reduced are solved. In order to overcome the defects in the prior art, the utility model provides the ion exchange device for the organic film-removing liquid, and the ion exchange device for the organic film-removing liquid can uniformly flow out of the film-removing liquid by utilizing the plurality of drain holes when the film-removing liquid flows out through the matched arrangement of the flow guide cavity and the drain holes, so that the film-removing liquid can be uniformly separated from the film-removing liquid. Furthermore, the film removing liquid is uniformly distributed in the device.

Ion exchange membranes (e.g., anion exchange membranes) and methods of using the membranes are described. The ion exchange membranes are multi-modal ion exchange membranes containing a plurality of multi-modal exchange ligands. The membranes can achieve high dynamic and equilibrium binding capacities at solution conductivities typical for production of biologics (e.g., greater than about 10 mS / cm) and can provide excellent binding at high flow rates. Systems incorporating the membranes can dramatically increase isolation and purification speeds. Membranes are disclosed for use in production of biologics.

To provide a technology capable of recovering concentrated liquid from a concentration apparatus more than ever.SOLUTION: A concentration method includes a concentration step, a recovery step, and an extraction step. In the concentration step, in a concentration apparatus comprising a concentration mechanism configured to concentrate a specific component contained in a liquid, and a circulation line configured to allow the liquid to flow out from and return to the concentration mechanism, the method concentrates, by the concentration mechanism, the specific component contained in the liquid while circulating the liquid through the circulation line. In the recovery step, after the concentration step, the method recovers at least some of the concentrated liquid from a recovery section. In the extraction step, further after the concentration step, the method extracts at least some of the concentrated liquid from an extraction section different from the recovery section.SELECTED DRAWING: Figure 4

The subject invention pertains to multimodal chromatography resins comprising anionic and cationic ligands on each resin particle and methods of synthesizing the multimodal chromatography resin by contacting a base with quaternary amines and / or tertiary amines on the surface of a substrate. The multimodal resins can be tuned by changing the ratios of cation to anions. The multimodal chromatography resins can be used for purifying proteins.

A process for purifying (i) a hydrophilic organic solvent, (ii) a hydrolysable organic solvent, or (iii) a mixture of a hydrophilic organic solvent and a hydrolysable organic solvent by removing ionic contaminants from the hydrophilic organic solvent, from the hydrolysable organic solvent, or from the mixture of a hydrophilic and a hydrolysable organic solvent without generation of by-product impurities, the process including the steps of contacting the hydrophilic organic solvent, the hydrolysable organic solvent, or the mixture of hydrophilic and hydrolysable organic solvents with a mixed bed of ion exchange resin; wherein the mixed bed of ion exchange resin includes a mixture of: (a) a weak-acid cationic ion exchange resin and (b) a weak-base anionic ion exchange resin.

Compositions and methods for impurity removal are provided. A method comprises obtaining a first solution comprising an amino silane compound and a halide impurity. The method comprises contacting the first solution with an anion exchange resin to obtain a second solution. The second solution comprises less of the halide impurity than the first solution.

The present disclosure is directed to methods and systems of purifying bioderived organic solvents. The purified bioderived organic solvents can be used in a multistep semiconductor manufacturing process.

The utility model discloses an ion exchange device for tagatose production, which relates to the technical field of ion exchange and comprises a base, a fixing support is fixedly connected to the upper end of the base, and four fixing rods are fixedly connected to the side wall of the fixing support. The end, away from the fixing support, of the fixing rod is fixedly connected with a first exchange assembly, a second exchange assembly, a third exchange assembly and a fourth exchange assembly respectively, and the first exchange assembly, the second exchange assembly, the third exchange assembly and the fourth exchange assembly each comprise an installation cylinder. The position of the inner cylinder in the mounting cylinder can be conveniently adjusted, so that the height of the whole ion exchange assembly can be flexibly adjusted, the device can meet the mounting requirements of equipment with different heights, the applicability and the flexibility of the device are greatly enhanced, and in the mounting or dismounting process, only the limiting cylinder needs to be simply rotated, and the mounting and dismounting are convenient. Therefore, the pipeline can be quickly spliced with or detached from the liquid outlet at the lower end of the mounting cylinder and the liquid inlet at the upper end of the inner cylinder.

A composition may include a crystalline phase including lithiated bayerite. The composition can have a Li / B Selectivity Factor of at least 4.2 and a Turbidity Factor of less than 1000 NTU. In an embodiment, the composition comprises a content of Li from 2 wt% to 5 wt%, a content of Cl from 10 wt% to 26 wt%, a content of Al from 15 wt% to 30 wt% of the composition, or a combination thereof. A product can include the composition of embodiments herein and be configured to extract lithium from a solution.

The invention relates to a continuous ion exchange device and method for separating lithium and sodium in high-sodium lithium-containing wastewater, and the continuous ion exchange device comprises a resin column group which comprises three resin columns which are connected in series and in parallel and are filled with lithium-sodium separation resin, and the resin columns are sequentially connected in series to form a main series pipeline; the resin columns located at the head and the tail are connected to form a closed loop backflow pipeline, the resin column group forms an adsorption resin column group and a regeneration resin column group which move in sequence and operate circularly along the main series connection pipeline and the closed loop backflow pipeline, the adsorption resin column group comprises two resin columns, and the regeneration resin column group comprises one resin column. When a resin column of the adsorption resin group reaches a penetration point, the adsorption resin group is switched into a regeneration resin column group; the feeding pipeline is connected with one end of the resin group; and the discharging pipeline is connected with the other end of the resin group. Compared with the prior art, the lithium-sodium separation efficiency and the resin utilization rate are remarkably improved.

The invention relates to the technical field of agriculture, in particular to an agricultural waste micro-aerobic fermentation liquid lactic acid separation system. Comprising a fermentation liquor supply tank, a resin column and a magnetic field generator, an outlet of the fermentation liquor supply tank is connected with an inlet of the resin column, and the fermentation liquor supply tank is configured to convey agricultural waste micro-aerobic fermentation liquor in the fermentation liquor supply tank to the resin column; the magnetic field generator is wound on the resin column and is configured to generate a pulsed magnetic field in the resin column so as to carry out oriented polarization on lactic acid in the agricultural waste micro-aerobic fermentation liquid in the resin column. The technical problem that in the prior art, the mass transfer resistance of lactate ions entering resin pore channels in agricultural waste micro-aerobic fermentation liquor is large is solved.

The invention discloses an airless methane sulfonic acid leacheate generator for liquid phase ion chromatography, which comprises a shell, a first heterogeneous anion exchange membrane, a first homogeneous anion exchange membrane, a second heterogeneous anion exchange membrane, anion exchange resin, a bipolar membrane, a third heterogeneous anion exchange membrane, a second homogeneous anion exchange membrane and a fourth heterogeneous anion exchange membrane are sequentially arranged in the shell, a cathode chamber is formed between one side, far away from the first homogeneous anion exchange membrane, of the first heterogeneous anion exchange membrane and the inner wall of the shell, an anode chamber is formed between one side, far away from the second homogeneous anion exchange membrane, of the fourth heterogeneous anion exchange membrane and the inner wall of the shell, and a cathode plate is arranged in the cathode chamber; an anode plate is arranged in the anode chamber, the anode plate and the cathode plate are connected with a power supply, the generator can generate the airless methane sulfonic acid leacheate for liquid phase ion chromatography, and the generator is simple in structure and small in size.

Chromatography resins having anionic exchange-hydrophobic mixed mode ligands and methods of using such resins are provided.

The present invention relates to a method for virus capture or separation. More closely, the invention relates to a method for direct influenza and adenovirus capture using magnetic beads. The method allows direct separation from crude cell lysate in a rapid manner.

The invention discloses an airless potassium hydroxide leacheate generator for liquid phase ion chromatography, which comprises a shell, a first heterogeneous cation exchange membrane, a first homogeneous cation exchange membrane, a second heterogeneous cation exchange membrane, cation exchange resin, a bipolar membrane, a third heterogeneous cation exchange membrane, a second homogeneous cation exchange membrane and a fourth heterogeneous cation exchange membrane are sequentially arranged in the shell, an anode chamber is formed between the inner walls of the shell on one side, far away from the first homogeneous cation exchange membrane, of the first heterogeneous cation exchange membrane, and an anode plate is arranged in the anode chamber; a cathode chamber is formed between the side, away from the second homogeneous cation exchange membrane, of the fourth heterogeneous cation exchange membrane and the inner wall of the shell, a cathode plate is arranged in the cathode chamber, the anode plate and the cathode plate are connected with a power source, and the generator is good in component separation effect, simple in structure and small in size.

To provide a separation tower capable of separating mixed ion exchange resin used in an ion exchange device or the like with high accuracy.SOLUTION: A separation tower 1 for mixed ion exchange resin is provided with a water supply pipe 2 as a water injection part and a plurality of discharge nozzles 2A at the bottom part of the side 1A of a cylindrical separation tower body, and a drain pipe 3 as a discharge part is connected to the top part. A water collecting plate 4 is arranged on the upper side of the discharge nozzle 2A of the separation tower body 1A. An interface sensor 11 as detecting means for detecting the position of the interface between ion-exchange resin and the liquid is inserted from the top part of the separation tower body 1A, and a flow rate controller 12 as flow adjusting means is provided in the water supply pipe 2. Control means (not shown) such as a personal computer for controlling the flow rate controller 12 on the basis of the detection value of the interface sensor 11 is provided.SELECTED DRAWING: Figure 2

The invention provides a decoloring system and method for a sodium glutamate hot saturated stock solution, the sodium glutamate decoloring system is a continuous ion exchange device, and the continuous ion exchange device comprises a decoloring area, a washing area, an alkali regeneration area and a salt regeneration area which are sequentially arranged along a resin column switching direction; the decoloring area, the washing area, the alkali regeneration area and the salt regeneration area are respectively and independently provided with at least one resin column; and the resin columns are respectively and independently filled with styrene strong base anion exchange resin. The decolorizing system and method for the sodium glutamate thermal saturated stock solution have an excellent decolorizing effect, the problem of precipitation of the sodium glutamate thermal saturated stock solution in the decolorizing process is avoided, the problem of resin floating is solved, and the filling rate and the utilization rate of the resin are improved, so that the material handling capacity and the production efficiency are greatly improved, and the production cost is reduced.

Systems and methods for preparing compound crystals of erythritol and high-intensity sweeteners are provided. The systems may comprise a fermentation liquid storage tank (1), a ceramic membrane filtration system (2), a nanofiltration system (3), a first evaporator (4), a first crystallization kettle (5), a first centrifuge (6), a sugar dissolution tank (7), a decolorization tank (8), an ion exchange column (9), a blending tank (10), a second evaporator (11), a second crystallization kettle (12), a second centrifuge (13), a hot-air drying tank (14), a fluidized drying bed (15), and a finished product tank (16) sequentially connected through pipelines. The systems may further comprise a high-intensity sweetener storage tank (17), a primary mother liquor tank (18), and a secondary mother liquor tank (19). The finished product tank (16) may store a prepared compound crystallization product of the erythritol and the high-intensity sweetener.

The invention belongs to the technical field of adsorption-method lithium extraction, and relates to a novel high-sulfate-radical brine aluminum-series lithium extraction adsorbent desorption process method, which is characterized in that continuous ion exchange equipment is adopted, the continuous ion exchange equipment is adopted, and the continuous ion exchange equipment is adopted to carry out continuous ion exchange on the high-sulfate-radical brine aluminum-series lithium extraction adsorbent desorption process, so that the high-sulfate-radical brine aluminum-series lithium extraction adsorbent desorption process is realized. The continuous ion exchange equipment comprises an adsorption area, a leaching area and an analysis area; the method comprises the following steps: carrying out lithium extraction adsorption on brine in an adsorption area through an adsorption unit of continuous ion exchange equipment; after adsorption, entering a leaching area to complete impurity leaching; desorbing lithium on the adsorbent in the desorption area by using a desorption agent; the desorption area is provided with a plurality of ion exchange columns which enter from the bottom and exit from the top, and comprises a pure water desorption area and a qualified liquid circulation desorption area. The method disclosed by the invention has the advantages that the lithium extraction adsorption and desorption efficiency is relatively high, and sulfate radical poisoning is avoided.

The application relates to the technical field of ion exchange equipment and specifically discloses a device and method for removing air bubbles in an ion exchange column, which comprises a shell, multiple groups of ion exchange components and multiple gas-liquid separation pieces, the multiple groups of ion exchange components are arranged in the shell and are spaced apart along the axial direction of the shell, the gas-liquid separation pieces correspond to the ion exchange components one by one, each gas-liquid separation piece is arranged on the side of the ion exchange component close to a discharge port, the gas-liquid separation piece is umbrella-shaped, a separation cavity is formed between the gas-liquid separation piece and the ion exchange component, the top of the gas-liquid separation piece is connected with an exhaust pipe, the exhaust pipe extends to the outside of the shell, the gas-liquid separation piece comprises a body and a flow blocking part, the body is connected with the flow blocking part, a flow hole is formed in the body and is used for passing fluid, the normal projection of the flow blocking part on the body covers the flow hole, so that the gas phase can rise along the flow blocking part to the exhaust pipe and be discharged. The application can efficiently remove the air bubbles generated in the ion exchange process.

The utility model relates to the field of fuel cells, and discloses a novel hydrogen fuel cell deionizer which comprises a barrel, end covers are arranged at two ends of the barrel, mixed bed resin is filled in a cavity of the barrel, a liquid inlet and a liquid outlet are respectively arranged on the two end covers, a composite nylon filter screen is arranged in each end cover, and the composite nylon filter screen is provided with a double-layer filter screen structure. The inner side filter screen is high in strength and small in mesh number, the outer side filter screen is low in strength and large in mesh number, a liquid inlet cavity, a transition cavity and a discharge cavity are sequentially formed in the end cover, the cavity bodies of the liquid inlet cavity, the transition cavity and the discharge cavity are sequentially enlarged, the liquid inlet cavity is formed in the liquid inlet / liquid outlet, the discharge cavity is communicated with the cavity of the barrel, and the composite nylon filter screen is arranged in the discharge cavity. According to the deionizer, brand new flow channel design is adopted, flow resistance and exchange capacity are balanced, meanwhile, the composite nylon filter screen without ion precipitation is adopted, the service life of the deionizer is further prolonged, and long-term stable work in a high-temperature environment is guaranteed.