254results 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.

A method comprising obtaining a bodily fluid from a subject; contacting the bodily fluid with an adsorbent material comprising a synthetic carbon particle (SCP) to produce a first filtrate having a level of disease mediators (y); contacting the first filtrate with an adsorbent material comprising the SCP and an anion exchange resin where the ratio of SCP to anion exchange resin is in a range from about 0.1:100 to 100:0.1 to produce a second filtrate; contacting the second filtrate with an adsorbent material comprising the SCP and a cation exchange resin where the ratio of SCP to cation exchange resin is in a range from about 0.1:100 to 100:0.1 to produce a third filtrate.

Provided are a purification method and purification apparatus that deplete the metal impurities in an organic solvent. This organic solvent purification method is a purification method that depletes the metal impurities in an organic solvent, said organic solvent purification method is characterized by comprising: a filtration step for filtering the organic solvent with a particle removal filter; and an ion-exchange step for passing the organic solvent yielded by the filtration step through an ion exchanger.

The disclosure provides compositions and methods for removing ions from hydrocarbon mediums. A method may include removing a first anion from a liquid hydrocarbon. The method may include contacting an ion exchange resin having a second anion with a water-soluble organic solvent to form a treated ion exchange resin, contacting the treated ion exchange resin with the liquid hydrocarbon, and removing the first anion from the liquid hydrocarbon by exchanging the first anion with the second anion. A composition may include the hydrocarbon medium and the ion exchange resin or treated ion exchange resin.

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.

To provide methods of reducing bioburden of a chromatography resin.SOLUTION: Provided herein are methods that include exposing a container including a composition including (i) a chromatography resin and (ii) a liquid including at least one alcohol to a dose of gamma-irradiation sufficient to reduce the bioburden of the container and the chromatography resin, where the at least one alcohol is present in an amount sufficient to ameliorate the loss of binding capacity of the chromatography resin after / upon exposure to the dose of gamma-irradiation. Also provided are: reduced bioburden chromatography columns including the reduced bioburden chromatography resin; compositions including a chromatography resin and a liquid including at least one alcohol; and methods of performing reduced bioburden column chromatography using one of these reduced bioburden chromatography columns.SELECTED DRAWING: Figure 1

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.

A method for producing an ion exchange resin. The method comprises steps of: (a) providing a basic ion exchange resin in the acidic form which comprises amino polyol groups and has a volume % swell from 15 to 30% upon conversion from the basic form to the acidic form, and (b) washing the resin with water or aqueous acid.

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 invention provides a method for recovering metal of a lithium secondary battery and a recovery system. In a method for recovering a metal of a lithium secondary battery, a lithium-containing positive electrode active material mixture is prepared. The positive electrode active material mixture is reduced to produce a lithium precursor. A lithium precursor is dissolved in water to form an aqueous lithium precursor solution. The lithium precursor aqueous solution is introduced into the aluminum adsorption resin column, so that aluminum is adsorbed into the aluminum adsorption resin column. A first treatment liquid containing distilled water is injected into the aluminum adsorbent resin column at a flow rate of 100 L / h to 1200 L / h to obtain a regenerated aluminum adsorbent resin column in which aluminum is desorbed.

Provided herein are ion exchange filters comprising mixed beds of strong acid cation resins in H form, strong base anion resins in OH form and strong base anion resins in HCOs form, in specific proportions. The mixed resin beds provide more thermal stability and lower electrical conductivity compared to single resin beds. Further provided herein is a method of purifying an aqueous fluid, for example a stream in a fuel cell, a battery, a battery charger or an electrolyzer, by contact with the mixed resin beds of the ion exchange filters described herein.

The present disclosure provides for sorbents, methods of using sorbents and contactors to capture CO2, structures including the sorbent, and systems and devices using sorbents to capture CO2. The methods, systems, contactors, and sorbents of the present disclosure can be advantageous since they are robust and reduce the cost of capturing CO2, in particular from ambient air. The present disclosure provides for sorbents having a support and a CO2-philic phase that includes phosphite containing molecules, which leads to a sorbent that is effective for capturing CO2.

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.

A three-compartment electrochemical desalination system, and process of using same, is described, wherein a feed including brackish water or seawater can be introduced and fresh water can be produced. The electrochemical desalination system can be coupled to a carbon dioxide-capturing apparatus, which can scrub carbon dioxide from any air source, and an acid-base neutralizer, which can release the scrubbed carbon dioxide as a pure gas stream. The overall process thus results in the simultaneous separation of CO2 from an air source (i.e., carbon capture) and the production of fresh water from brine (i.e., desalination).

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.

The invention discloses a method and a device for quickly identifying renovated ion exchange resin, and relates to the field of ion exchange resin testing. When at least four colors with different depths appear, deep color impurities are attached to the outer parts of particles or impurities exist in the particles, more than 10% of particles have cracks in the inner parts or the particles are non-whole-ball particles, the resin can be identified as renovated resin, otherwise, the conductivity value of the ion exchange resin effluent is tested, the time for reaching the minimum value of the conductivity is 80-90 minutes, and the renovated resin can be identified as renovated resin. The resin is identified as renovated resin when the minimum value of the conductivity is greater than 20 [mu] S / cm and the conductivity value after 40 min of water washing is more than 10% of the conductivity value after 20 min of water washing, otherwise, the resin is not renovated resin, and the method has the advantages of rapidness, accuracy, low cost, wide application range and the like, and plays an important role in acceptance inspection of new ion exchange resin.

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.

A process for softening hard water comprising the steps of: a) contacting hard water with a thermally regenerable ion exchange resin pre- saturated with ammonium and bicarbonate ions so as to replace 'hard' ions in the feedwater with NH4 + and HCO3 - ions; b) heating the ammonium bicarbonate (AB) solution produced to decompose the AB, producing a soft product water of low salinity; c) collecting the emitted ammonia and carbon dioxide gases by bubbling through cool water to re-form the concentrated AB regenerant solution; and d) passing the concentrated ammonium bicarbonate solution through the hardwater exhausted resin, at elevated temperatures (up to 80°C) to partially decompose the AB and generate controlled partial pressures of NH3 and CO2 (up to 10 atm, in a sealed column) to drive the resin regeneration process. e) repeating steps a) to d).

Novel cationic surfactant derivatives are provided, which have enhanced pH stability and surprising ability to clean soils while sanitizing and / or disinfecting in a single application. Methods of their use and production are also provided. Advantageously, the novel surfactants are biodegradable and have reduced toxicity over comparable traditional surfactants.

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 invention provides a method for producing berberine, palmatine and jatrorrhizine hydrochloride based on Fibraurea recisa Pierre; the present invention uses specific Fibraurea recisa Pierre as raw material, after crushing, warming extraction with dilute acid, temperature-controlled filtration for clarification and membrane separation, berberine hydrochloride is separated by crystallization and recrystallization: then the crystallization mother liquor is subjected to fractional crystallization and recrystallization to separate palmatine hydrochloride; finally, jatrorrhizine hydrochloride is separated by the combined use of ion exchange resin and macroporous adsorption resin chromatography. The present invention continuously produces three high-value-added alkaloid monomers based on Fibraurea recisa Pierre containing berberine, palmatine and jatrorrhizine, all of which are heterocyclic compounds; the present invention can also solve the problems of environmental pollution by salt wastewater, alkaline browning, difficult regeneration caused by resin staining during the production process, and improve the purity of alkaloid monomers, forming a production system that can be applied industrially.

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.