156results about "Ion exchange regulation/control" patented technology

The present invention relates to a multi-stage ion exchange resin tank control method and system, and a storage medium. The method comprises: H1, starting a production line, on the basis of a flow sensor on each stage of ion exchange resin tank, obtaining flow data information of a sodium silicate solution, and on the basis of a timer on each stage of ion exchange resin tank, obtaining filtering time data information of a current resin tank; H2, inputting, into a system identification model of silica sol liquid conductivity in a mixed ion exchange resin tank established by a neural network, the flow data information of the sodium silicate solution and the filtering time data information of the current resin tank for training and learning, and outputting conductivity data information of the current resin tank; and H3, inputting, into a proportional valve model, the conductivity data information of the current resin tank for simulation training. The present invention can not only achieve production of a high-quality desalted silica sol with conductivity lower than 20 μs / cm and a neutral pH value, but also improve the production efficiency of the silica sol.

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.

A versatile and efficient method is described for recovering a high-purity material (target) or multiple materials (targets) from a complex mixture in batch or continuous chromatography systems. If perfectly selective sorbents are available for the targets, constant-pattern batch capture methods in tandem or tandem carousel capture methods are preferred. If perfectly selective sorbents for the targets are unavailable, the batch capture, carousel capture, isocratic SMB, non-isocratic SMB, and isotachic displacement methods can be deployed in tandem or in parallel to produce high purity products with high yields and high productivity.

The invention discloses a method for separating and purifying 64Cu in an accelerator irradiation target, which adopts a combined process of an anion column and an extraction resin column to obtain high-concentration and high-purity 64Cu which can be directly used for biomarkers and recover 64Ni at the same time under the condition of not using an organic solvent. The acidity of Cu component effluent in the anion column is similar to that of a column on a Cu resin column, and TK201 resin can be selected to convert the acidity of the Cu component effluent in the Cu resin column and further remove residual Ni in the Cu component effluent in order to solve the problem that the acidity of the Cu component effluent in the Cu resin column is too high. And triple resin columns are superposed, so that a 64Cu final product with higher purity and more appropriate acidity can be obtained.

The utility model provides a special resin bed for amine liquid purification, the resin bed is arranged in a purification tank, the purification tank comprises a tank body and an end cover arranged on the tank body, a water distributor is arranged in the purification tank, the water distributor comprises a filter layer, an ion exchange resin layer, a resin regeneration layer and a spraying layer which are sequentially arranged from top to bottom, according to the amine liquid purification grease bed, efficient physical filtration and adsorption purification operation can be carried out on amine liquid to be purified through the water distributor arranged in the purifier, and the problem that a traditional amine liquid purification grease bed only depends on an ion exchange resin layer to carry out simple adsorption purification is solved; the problems that the purification effect of the amine liquid is poor and the service life of an amine liquid purification grease bed is short due to the fact that impurities in the amine liquid are not physically filtered in advance in the prior art are solved, the purification efficiency and effect of the amine liquid are greatly improved, and the service life of the water distributor is prolonged.

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 present invention provides an anion exchange membrane that has low electrical resistance when used in electrodialysis, is produced without an increase in cost, and is excellent in selective permeability to monovalent anions, and a method for producing the same. The anion exchange membrane has a tertiary amino group and a quaternary ammonium group as functional groups, such that an intensity ratio of the tertiary amino group to the quaternary ammonium group is 1.0 or more as measured by X-ray photoelectron spectroscopy on a surface of the anion exchange membrane having the tertiary amino group and the quaternary ammonium group as the functional groups.

To provide a refining method of a non-aqueous solvent using an ion exchange resin where a water content is easily and economically reduced without needing various kinds of non-aqueous solvents for pretreatment.SOLUTION: A refining method of a non-aqueous solvent using an ion exchange resin includes: a pretreatment step where the ion exchange resin is brought into contact with the non-aqueous solvent for pretreatment having a relative dielectric constant of 15 or more at 25°C; and a refining step where the ion exchange resin after the pretreatment is brought into contact with the non-aqueous solvent to be refined. A component concordance rate of the non-aqueous solvent for pretreatment and the non-aqueous solvent to be refined is 85 mass% or less.SELECTED DRAWING: None

The utility model discloses a phosgenation product byproduct hydrochloric acid filtering device, and aims to solve the problems of high cost, high pollution risk, non-ideal treatment effect and the like in the traditional treatment method. The device comprises a first resin column and a second resin column, a specific resin combination technology is adopted, sulfate radicals, ferric ions and organic pollutants in the byproduct hydrochloric acid are synergistically removed through the physical adsorption effect of resin, and the chromaticity and purity of the hydrochloric acid are remarkably improved. A PLC automatic control system is adopted in the device, starting and stopping of a valve and a pump are automatically adjusted according to the liquid level and hydrochloric acid transparency, and the stability and high efficiency of the purification process are guaranteed. Besides, through COD (Chemical Oxygen Demand) on-line monitoring of backwashing water, environmental protection and high efficiency of the backwashing process are ensured, the backwashing water can be recycled after being treated, and zero discharge of wastewater is realized. The device is simple in structure, convenient to operate and high in energy efficiency, and is an effective solution for treating the byproduct hydrochloric acid in the phosgenation reaction process.

For the purpose of reducing contamination of scandium oxide products, the present disclosure provides a method for removing at least one metal contaminant from a scandium (Sc) concentrate. The method is based on contacting the Sc concentrate with an ion exchange resin to obtain a purified Sc eluate or raffinate. The first and second ion exchange resins are strong acid cation resins having sulfonic acid functional groups in the potassium or sodium form. The purified Sc eluate or raffinate can be used to produce a scandium oxide product having reduced amounts of metal ion contaminants.

The utility model discloses equipment for preparing hypochlorous acid based on an ion exchange method, which relates to the technical field of hypochlorous acid preparation equipment and comprises a water inlet part, and the liquid inlet end of the water inlet part is connected with an external water supply pipeline; the liquid inlet end of the liquid injection part is connected with the water inlet part; the liquid inlet end of the ion exchange part is connected with the liquid injection part, and the liquid outlet end of the ion exchange part is connected with the hypochlorous acid using terminal through an external liquid conveying pipeline; the pipe diameter of the use terminal is greater than or equal to that of the liquid injection part; the controller is electrically connected with electrical elements in the water inlet part and the liquid injection part; according to the device, high-concentration hypochlorous acid can be prepared, the liquid outlet amount is large, and the weakly acidic cation exchange inner core has a good pH buffering function, so that the potential safety hazard of chlorine overflow does not exist.

The utility model discloses a novel ion exchange column which comprises a column body, an exchange liquid inlet, a resin outlet and at least one air inlet are arranged at the bottom of the column body, a filtering device is arranged in the column body, and an emptying port, an exchange liquid outlet, an observation port, a first liquid inlet and a second liquid inlet are arranged at the top of the column body. According to the novel ion exchange column, a liquid inlet mode, a bottom structure and a top structure are improved, and a multi-point blowback system is designed for a column body; and the volume of the exchange column is enlarged, so that the filling amount of single-column resin is increased. Through the improvement, the wall effect and siphonage are effectively avoided, and a resin bed layer is prevented from being tightly pressed and compacted; and the multi-point back-blowing device enables the resin to be washed and regenerated more thoroughly, so that the labor intensity is reduced.

The utility model discloses a kind of online detection devices for resin exchange, belong to water quality supervision field, a kind of online detection devices for resin exchange, including reaction mechanism, the rear end side of the reaction mechanism is fixedly connected with preparation mechanism, the inner end inboard of the preparation mechanism is fixedly installed with detection mechanism, the detection mechanism includes motor box, the upper end middle part of the motor box is movably installed with pivot, the upper end middle part of the pivot is fixedly connected with stirring rod, the upper end of the motor box is fixedly connected with stirring box, the upper end middle part of the stirring box is fixedly installed with reagent port, the front end middle part of the stirring box is provided with liquid inlet, the outer end side of the stirring box is fixedly connected with pipette, the tail end of the pipette is fixedly connected with liquid suction pump;The online detection device for resin exchange is provided with stirring rod, and the reagent and exchange liquid are stirred to make them mix quickly, improve the reaction efficiency, and improve the accuracy of detection when the device is used.

The utility model discloses an unattended monitoring device for mixed bed resin, which comprises a visual sensor, a micro sensor, a wireless signal transceiving processing module and a monitoring center, and the mixed bed comprises a first high-speed mixed bed and a second high-speed mixed bed, visual sensors are arranged on observation windows of the first high-speed mixed bed and the second high-speed mixed bed, wireless signal transceiving processing modules are arranged on the side walls, micro sensors are arranged on the bottom walls, and the visual sensors and the micro sensors are connected to the wireless signal transceiving processing modules through connecting wires. The wireless signal transceiving processing module comprises a wireless module and a signal processing module, and data collected by the visual sensor and the micro sensor are processed by the signal processing module and then transmitted to the monitoring center server through the wireless module. According to the utility model, a manual monitoring peephole is optimized into a visual and intelligent monitoring system, manual judgment on whether the resin bed fails and is put into operation is optimized into full-automatic intelligent identification judgment, and manual regeneration of failed resin is optimized into full-automatic intelligent regeneration.

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.

Water-softening device (1) of the present disclosure includes water-softening tank (4) that performs a water-softening treatment on raw water containing a hardness component with weakly acidic cation exchange resin (9) to generate acidic soft water, neutralization tank (5) that neutralizes a pH of the acidic soft water generated by passing through water-softening tank (4) with weakly basic anion exchange resin (10) to generate neutralized soft water, soft water detector (6) that detects an electrical conductivity of the neutralized soft water generated by passing through neutralization tank (5), acquisition unit (17) that acquires a first electrical conductivity corresponding to an ion other than the hardness component in the raw water, correction unit (18) that corrects the electrical conductivity of the neutralized soft water based on the first electrical conductivity acquired by acquisition unit (17) to output a second electrical conductivity, and calculator (19) that calculates hardness component information based on the second electrical conductivity.

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.

Methods of stabilizing virgin ion exchange resin material are provided. The methods include cleansing the virgin ion exchange resin material with a preparation comprising a non-ionic detergent. The methods include cleansing the virgin ion exchange resin material with a preparation comprising an alcohol solvent. The methods include rinsing virgin ion exchange resin material with deoxygenated water. the methods include introducing the cleansed / rinsed virgin ion exchange resin material into a gas impermeable vessel and hermetically sealing the vessel. The methods include introducing an oxygen scavenging material into the gas impermeable vessel, and hermetically sealing the vessel. A method of facilitating water treatment in a site in need thereof by providing a cleansed virgin ion exchange resin material in deoxygenated water is also disclosed.

The invention provides a resin continuous metering system and ion exchange reaction equipment and method. The resin continuous metering system comprises a first resin bin, a first separator, a second resin bin, a carrier liquid conveying assembly and a controller, and a regulating valve is arranged at a discharge port of the first resin bin; the first separator is provided with a first inlet, a first outlet, a second outlet, a mixed fluid meter and a first pipeline, and the first pipeline comprises a mixing pipe section; the carrier liquid conveying assembly comprises a carrier liquid bin, a liquid feeding pipeline and a liquid return pipeline, the carrier liquid bin is provided with a second inlet and a third outlet, the two ends of the liquid return pipeline are correspondingly connected with the second outlet and the second inlet, the liquid return pipeline is provided with a carrier liquid meter, and one end of the liquid feeding pipeline is correspondingly connected with the third outlet. The other end of the liquid feeding pipeline is connected with the first resin bin or the mixing pipe section; the controller is used for adjusting the opening degree of the regulation and control valve. The resin flow can be monitored in real time, and accurate control over the reaction process is achieved.

There is disclosed a method and apparatus for improving lithium yield of lithium lithium- selective media in one or more packed-bed columns in a direct lithium extraction process. The method comprises the steps of a) passing the lithium-selective media and a stream of process fluid through a screening zone; and b) collecting a portion of lithium-selective media having a required particle-size distribution and / or free of contaminants.

The present invention belongs to the technical field of filtration and separation, and in particular, relates to a battery-grade lithium carbonate lithium precipitation mother liquor recovery device, comprising a filter box and an adsorption tank arranged on one side of the filter box, and also comprising: a liquid inlet pipe, the liquid inlet pipe is fixedly inserted into the upper end of the side wall of the filter box, and the inner wall of the filter box is located below the liquid inlet pipe and a filter is fixedly installed; an upper detection unit is fixedly connected to the top of the adsorption tank; an energy storage unit is arranged on the top of the filter box and is connected to the upper detection unit; a suction mechanism is arranged on the side wall of the filter box. The present invention can filter solid impurities, and based on the ion concentration difference before and after ion exchange of the battery-grade lithium carbonate lithium precipitation mother liquor, automatically remind personnel to replace the ion exchange resin filler, and increase the contact area between the mother liquor and the ion exchange resin, improve the separation efficiency and sufficiency, and help reduce lithium ion waste, while avoiding the clogging of the filter screen inlet position.

The present invention relates to a method for producing high-purity arabinose crystals, which comprises sequential steps of dissolving, blending, ion exchange, decolorization filtration, microfiltration, evaporation concentration, crystallization, centrifugation, drying, etc. During the production of arabinose crystals, the pH of the material is controlled to 4.3-7.5 and the temperature to 70°C or lower, thereby avoiding a decrease in purity due to the promotion of conversion of arabinose to miscellaneous sugars at high temperatures, and improving the purity of the produced arabinose crystals.

The present disclosure relates to the extraction of lithium from liquid resources such as natural and synthetic brines, leachate solutions from clays and minerals, and recycled products.

A process for mechanical separation of sorbent particles in a Direct Lithium Extraction (DLE) process using an ultrafiltration membrane and / or nanofiltration membrane. Also disclosed is a system for mechanical separation of sorbent particles in a Direct Lithium Extraction (DLE) process using an ultrafiltration membrane and / or nanofiltration membrane. Also disclosed is an improved DLE process with a pH controlled upload step.

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.

Water softener includes a soft water tank, a neutralization tank, bypass flow path that sends, as untreated water, raw water to a downstream side of the neutralization tank without passing the raw water through the soft water tank and the neutralization tank, mixer that mixes the untreated water sent from bypass flow path and the neutralized soft water sent from the neutralization tank to generate mixed water, flow rate adjustment unit that adjusts a supply amount of at least one of the untreated water and the neutralized soft water to mixer, and controller that controls a mixing ratio between the untreated water and the neutralized soft water by flow rate adjustment unit. Controller includes mixing ratio determination unit that determines the mixing ratio between the untreated water and the neutralized soft water based on instruction information related to at least one of a regeneration time during which a regeneration process can be performed and a water softening degree of the mixed water, and flow rate controller that adjusts the supply amount to be adjusted by flow rate adjustment unit such that the mixing ratio determined by mixing ratio determination unit is obtained.

The utility model relates to a desalting device for development of an epoxy diluent, which comprises a base, a mixing drum arranged at the upper end of the base, an end cover arranged at the top end of the mixing drum, a linkage sleeve rotationally arranged in the end cover, a rotating shaft arranged in the linkage sleeve, a fixed shaft arranged in the rotating shaft and rotationally connected with the linkage sleeve. The axis of the fixed shaft is perpendicular to the axis of the rotating shaft, a swing structure is arranged in the linkage sleeve, and a motor support is arranged at the top end of the end cover. The utility model relates to the technical field of epoxy diluent desalination. According to the desalting device for development of the epoxy diluent, a driving structure drives a rotating shaft to rotate, so that a storage barrel and stirring fan blades at the bottom end of the rotating shaft rotate in the storage barrel, and the epoxy diluent can enter the storage barrel through a through hole to be in contact with ion exchange resin; and separating out salt ions in the epoxy resin diluent through ion exchange resin.

The invention relates to a method for purifying a target substance starting from a fluid to be treated which comprises at least one impurity, said method comprising the following steps: – provision of a stream of the fluid to be treated; – treatment of the stream of fluid to be treated using a chromatography step in a first separation unit (1); – collection of a fraction enriched with the target substance, in a first tank (4); – viral inactivation of the fraction enriched with the target substance, said viral inactivation comprising:  passing the fraction enriched with the target substance collected in the first tank (1) through a second separation unit (2), via a bypass line (9);  passing a viral inactivation solution through the second separation unit (2), via the bypass line (9);  mixing the fraction enriched with the target substance and the viral inactivation solution; and  collecting the mixture of the fraction enriched with the target substance and the viral inactivation solution, in the second tank (5); so as to obtain a fraction depleted of active virus; – treatment of the fraction depleted of active virus using a chromatography step in the second separation unit (2); and – collection of a fraction more enriched with the target substance, at the outlet of the second separation unit (2).

The present invention relates to the technical field of xylose production, and particularly relates to a continuous decolorization system for xylose production and its usage method. Three decolorization resin columns are provided and connected in series through series columns pipelines. Metering pumps are installed on the feed main pipe, alkali inlet main pipe, acid inlet main pipe, and elution main pipe. Automatic control valves are installed on the feed pipelines, discharge pipelines, and series columns pipelines of each decolorization resin column. The metering pumps and the automatic control valves are connected to a PLC control system. By controlling the opening and closing time and sequence of each metering pump and the automatic control valve, a cycle process of primary decolorization, regeneration, and secondary decolorization of a single decolorization resin column can be realized, and an orderly series connection between multiple decolorization resin columns can be achieved, realizing a continuous and stable decolorization process of the xylose solution by the entire system. The present invention can completely replace activated carbon, improve the working environment, reduce solid waste pollution, relieve the environmental protection pressure, and achieve automated continuous operation, reduce the labor intensity of personnel, and reduce production costs.

The invention provides a method for removing residual metal in an acrylate polymer by a solid-liquid phase ion adsorption method. The method comprises the following steps: adding ion exchange resin into a chromatographic column, rinsing and compacting with a solvent, adding an acrylate polymer glue solution diluted with the solvent, collecting the chromatographic glue solution, repeating the chromatographic process for 1-3 times, concentrating and drying, thereby obtaining the product. The mass ratio of the ion exchange resin to the acrylate polymer glue solution is (0.1-10): 1; the mass ratio of the acrylate polymer glue solution to the solvent required for dilution is (0.25-4): 1. According to the method, the cation exchange resin is adopted to remove residual lithium and aluminum metal ions in the acrylate polymer, so that the operation difficulty is relatively low, and meanwhile, possible pollution sources are not additionally increased; the whole operation process is convenient and simple, the stability is high, the requirement for equipment is low, and residual lithium and aluminum metal ions in the block acrylate glue solution can be rapidly removed.