52 results about "Anion exchanger" patented technology

A method of producing a solution containing hemoglobin A2 and a method of producing a hemoglobin precision control substance, the methods including contacting a solution containing hemoglobin and having a pH of from 7.8 to 9.5 with an anion exchanger, are provided.

The utility model relates to the field of desalted water equipment, in particular to a desalted water production system of a nuclear power plant. The utility model relates to a desalted water production system for a nuclear power plant, which comprises a nuclear power plant cooling water collection tank, an ozone oxidation tower, a flocculation sedimentation tank, a multi-medium filter, an activated carbon / resin filter, a desalted seawater collection tank, a roll-type ultrafiltration energy recovery device, a roll-type ultrafiltration device, a reverse osmosis energy recovery device and a reverse osmosis device which are sequentially arranged, the device comprises an anion exchanger, a cation exchanger, a mixed bed and a demineralized water collecting tank.

To increase an efficiency of decomposing an organic matter and suppress an increase of hydrogen peroxide.SOLUTION: A water treatment method includes: removing dissolved oxygen from water to be treated, which contains dissolved oxygen and an organic matter, by a first deoxygenation device 33; irradiating the treated water from the first deoxygenation device 33 with ultraviolet light by an ultraviolet irradiation device 34; and passing the treated water from the ultraviolet irradiation device 34 through an ion exchanger filling device 35 filled with at least anion exchanger A. The ion exchanger filling device 35 removes hydrogen peroxide generated by irradiation of ultraviolet rays from the ultraviolet irradiation device 34 from the treated water of the ultraviolet irradiation device 34, and the treated water from the ultraviolet irradiation device 34 is passed through the anion exchanger A in the ion exchanger filling device 35 at a space velocity of less than 160 ( / h).SELECTED DRAWING: Figure 1

The invention discloses an ion exchange washing alkaline water recycling system, and relates to the field of water treatment. The system comprises an anion exchanger, a washing alkaline water collection pipeline, an online monitoring unit, a shunting switching unit, a weak acid cation exchange treatment unit, an acid liquid regeneration unit, a pipeline conveying pump, a decarburization unit, an intermediate water tank, a recycling unit and a control unit. The online monitoring unit is arranged at the washing drainage end of the anion exchanger, the water quality of the washing alkaline water is detected in real time, and graded recovery of the washing alkaline water is achieved in combination with the shunt switching unit; the recycled washing alkaline water enters a weak acid cation exchange treatment unit to be subjected to ion exchange treatment so as to reduce the alkalinity of the water body; meanwhile, the weak-acid cation exchange resin is regenerated by utilizing acidic waste liquid generated by regeneration of the cation exchange bed, so that synergistic utilization of acid and alkali resources is realized; the treated water body sequentially passes through the decarburization unit and the middle water tank and then is reused for the pure water preparation system.

A process for preparing a modified latex particle wherein the particle comprises a polycondensate bonded to a functional group on the latex particle and the process for forming a polycondensate comprises reacting an amino group present on the latex particle with (i) at least a first polyfunctional compound, or (ii) at least a first multifunctional compound having at least two functional groups that react with said functional groups of the latex, and at least a first amine compound comprising an amino group selected from the group consisting of ammonia, primary amines and secondary amines, or (ii) at least a second multifunctional compound having at least two functional groups that react with said functional groups of the latex, and at least a second amine compound comprising an amino group selected from the group consisting of ammonia, primary amines and secondary amines, to form a first polycondensate reaction product comprising ion exchange sites and a first unreacted excess of functional groups.

A bipolar electrodialysis method using an electrodialysis apparatus with a bipolar membrane (BP) and a cation exchange membrane (C) disposed between an anode (10) and a cathode (11) to generate acid and alkali from salt, characterized in that when the electrodialysis apparatus is de-energized, the alkali chamber facing the anion exchanger (a) of the bipolar membrane (BP) is acid-washed with an acidic aqueous solution with a pH of less than 3.5.

1. A method for producing modified latex particles, the particles comprising condensation polymers attached to functional groups on the latex particles, and the method for forming the condensation polymer comprises reacting amino groups present on the latex particles with either (i) at least a first multifunctional compound having at least two functional moieties reactive with the functional groups of the latex, or (ii) at least a first multifunctional compound having at least two functional moieties reactive with the functional groups of the latex, and at least a first amine compound comprising an amino group selected from the group consisting of ammonia, primary, and secondary amines, to form a first condensation polymer reaction product comprising ion exchange sites and a first excess of unreacted functional moieties.

The present invention provides a water treatment system for more efficiently removing hardly decomposable organic substances. A pure water production device (1A) (water treatment system) includes: a halogen oxyacid addition unit (21) that adds a halogen oxyacid to water to be treated containing organic substances; and an ion exchanger filling device (14) that is located downstream of the halogen oxyacid addition unit (21) and filled with at least an anion exchanger. The water to be treated after adding the halogen oxyacid is passed through the ion exchanger filling device (14).

A method for making modified latex particles, wherein the particles comprise condensation polymers bonded to functional groups on the latex particles and the method for forming the condensation polymer comprises reacting the amino groups present on the latex particles with (i) at least a first polyfunctional compound, having at least two functional moieties reactive with said functional groups of the latex, or (ii) at least a first polyfunctional compound, having at least two functional moieties reactive with said functional groups of the latex and at least a first amine compound, comprising amino groups selected from the group consisting of ammonia, a primary and a secondary amine to form a first condensation polymer reaction product comprising ion exchanging sites and a first unreacted excess of functional moieties.

The application belongs to the field of coolant purification of nuclear power plants, and particularly relates to a coolant circulating purification system and method applied to nuclear power plants. The system comprises: a primary coolant storage system cation exchanger, a primary coolant storage system anion exchanger, a primary coolant storage system resin collector, a primary coolant treatment system cation exchanger, a primary coolant treatment system anion exchanger, and a primary coolant treatment system resin collector. A third bypass is arranged in front of the inlet of the primary coolant treatment system cation exchanger, and a valve is arranged in the third bypass to connect to a position after the inlet of the primary coolant storage system cation exchanger. The application can effectively improve the reliability of the primary coolant treatment system in purifying the coolant, and can switch the primary coolant storage system ion exchanger to operate in the case of failure of the primary coolant treatment system ion exchanger.

The present invention belongs to the field of primary circuit water quality control in nuclear power plants, and specifically relates to a control method for end-of-life boron removal of the primary circuit coolant in nuclear power plants. When the resin in the anion resin exchanger is used at the end of its first fuel cycle, the boric acid concentration is reduced to within the range of 150mg / L to 60mg / L, and the anion exchanger is put into operation alone. When the resin in the anion resin exchanger is used at the end of its second fuel cycle, the boric acid concentration is reduced to within the range of 120mg / L to 60mg / L, and the anion exchanger is put into operation alone. When the boric acid concentration is reduced to less than 60mg / L, the cation exchanger and the anion exchanger are put into operation together. When the total alkali metal or dissolved hydrogen concentration in the primary circuit is at the lower limit of the control value, the cation exchanger is temporarily taken out of operation and resumed after the water quality stabilizes. The present invention can effectively prevent water quality deviations and reduce the amount of radioactive resin solid waste in the primary circuit.

Provided is a method for purifying an organic solvent and a device for purifying an organic solvent, with which it is possible to reduce the amount of impurities such as metal impurities of as many kinds as possible from the organic solvent. The method for purifying an organic solvent includes an anion exchanger contact step for bringing an organic solvent to be purified into contact with an anion exchanger A and an anion exchanger B, wherein: the anion exchanger A is an anion exchanger having at least one ionic form that is selected from the group consisting of an OH form, a free base form, a carbonate form, and a bicarbonate form; and the anion exchanger B is a chelate resin that contains a glucamine-type ion exchange group.

Disclosed herein is an anion exchanger, a method for manufacturing an anion exchanger, anion exchange devices, and a system comprising the anion exchanger, wherein the anion exchanger comprises a polyDADMAC polymer, and wherein the anion exchanger is suitable for purifying and concentrating [18F]fluoride.

A water treatment method includes: adding a chemical to water to be treated to obtain water to be treated which contains iodine and is provided with oxidizing power; and supplying the water to be treated that has undergone the chemical addition to an electrodeionization device (EDI device) to treat the water to be treated in the EDI device. At least a part of an ion exchanger filled in a deionization chamber of the EDI device is an anion exchanger.

The utility model discloses a device for recovering condensate water generated by a salt-making MVR (mechanical vapor recompression) device, which belongs to the technical field of condensate water recovery and is characterized by comprising a condensate water tank, the condensate water tank is connected with a filter through a pipeline, and the filter is connected with a cation exchanger through a pipeline. The cation exchanger is connected with a carbon remover through a pipeline, the carbon remover is connected with an anion exchanger through a pipeline, the anion exchanger is connected with a mixed ion exchanger through a pipeline, the mixed ion exchanger is connected with a desalting water tank through a pipeline, and a backwashing water pump is connected between the condensate water tank and the filter. The device can keep the original shape of incoming water, the water production rate is improved, and the stable operation of the system is ensured.

The disclosure relates to a process for producing magnesium hydrogen carbonate and / or calcium hydrogen carbonate. An anion exchanger loaded with bicarbonate ions is provided, and a solution containing magnesium salt and / or calcium salt is then passed through the anion exchanger.

A resin composition contains a thermosetting resin, an inorganic filler material, a copolymer, and an inorganic ion scavenger, in which the copolymer has a (meth)acrylic monomer unit A having an anionic group, a (meth)acrylic monomer unit B having a cationic group, and a (meth)acrylic monomer unit C other than the (meth)acrylic monomer unit A and the (meth)acrylic monomer unit B, the inorganic ion scavenger includes both an anion exchanger and a cation exchanger, or an amphoteric ion exchanger, a content of the inorganic ion scavenger is 0.1 to 50 parts by mass with respect to 100 parts by mass of a sum total of the thermosetting resin and the copolymer, and a content of the copolymer is 0.01 to 10 parts by mass with respect to 100 parts by mass of the inorganic filler material.

An object of the present invention is to solve the various problems with the conventional process for producing a sugar fatty acid ester, such as a sucrose fatty acid ester (FASuc), and to provide a process which has advantages such as no production of a soap by-product and ease of separation between the catalyst and the product and also enables efficient synthesis by a simple operation under mild conditions in a flow system, and to provide a composition including the sugar fatty acid ester. The present invention is directed to a process for producing a sugar fatty acid ester by a transesterification reaction of a fatty acid ester and a saccharide using an anion exchanger as a catalyst, and to a composition including such a sugar fatty acid ester.

A method for making modified latex particles, wherein the particles comprise condensation polymers bonded to functional groups on the latex particles and the method for forming the condensation polymer comprises reacting the amino groups present on the latex particles with (i) at least a first polyfunctional compound, having at least two functional moieties reactive with said functional groups of the latex, or (ii) at least a first polyfunctional compound, having at least two functional moieties reactive with said functional groups of the latex and at least a first amine compound, comprising amino groups selected from the group consisting of ammonia, a primary and a secondary amine to form a first condensation polymer reaction product comprising ion exchanging sites and a first unreacted excess of functional moieties.

Provided are a method for producing a solution containing hemoglobin A2, a method for producing a solution containing hemoglobin A2 and hemoglobin F, and a method for producing a substance for managing the accuracy of hemoglobin, whereby a solution having a high proportion of hemoglobin A2 can be obtained from a blood sample that is readily available; a method for producing a solution containing hemoglobin A2 and hemoglobin F; and a method for producing a substance for managing the accuracy of hemoglobin. A method for producing a solution containing hemoglobin A2 and a method for producing a substance for managing the accuracy of hemoglobin, each of which comprises a step of bringing a solution containing hemoglobin and having a pH of 7.8-9.5 into contact with an anion exchanger.

The invention discloses a method for preparing an electrolyte precursor through fluorine anion exchange and application of the electrolyte precursor in a solid electrolyte. MXa and LiF are used as raw materials, a mixed product of fluoride and a nano LiX phase is generated in situ through mechanical mixing, the fluoride is Li MF type or MF type, and the mixed product is a solid electrolyte precursor; x in MXa is Cl, Br or I, and a is 2, 3, 4 or 5. The solid electrolyte composite precursor is prepared by utilizing a fluorine anion exchange method, and the high-performance halide or sulfide solid electrolyte is prepared by utilizing the complementary synergistic effect of a nano LiX phase and fluoride in the precursor and is applied to an all-solid lithium ion battery. The preparation method disclosed by the invention is simple in preparation process and high in repeatability, and is favorable for preparing a high-performance solid electrolyte material which is high in stability to lithium metal, wide in electrochemical window and high in ionic conductivity.

In an electrodeionization water production device (EDI device), the desalination chamber (23) is divided into a plurality of regions along the flow direction of the water to be treated, and the electrodeionization water production device can maintain the removal efficiency of anions containing weak acid components and can prevent the electrical resistivity of the treated water from being reduced due to the leakage of cations. The region (region A) located on the most upstream side is filled with a mixture of an anion exchanger and a cation exchanger so that the volume ratio of the cation exchanger is more than 50% and 90% or less, and the region (region B) located on the most downstream side is filled with a mixture of an anion exchanger and a cation exchanger so that the volume ratio of the cation exchanger is more than 50% and 90% or less. The mixture of the anion exchanger and the cation exchanger is filled such that the volume ratio of the anion exchanger is greater than 50% and 90% or less.

The invention discloses a clean-up and split-flow white water recovery system and method. The clean-up and split-flow white water recovery system comprises a pretreatment unit, an ion treatment unit and a post-treatment unit, wherein the ion treatment unit and the post-treatment unit are connected with the pretreatment unit in series; delivering the white water containing cations or anions to a white water collection tank, the white water input stream flowing through an anion exchanger containing anions / cations and a cation exchanger; the cation exchanger and the anion exchanger are connected in series to remove at least part of the anions / cations from the white water input flow so as to generate high-quality water subjected to ion exchange, the white water can be effectively recycled, treated and reused, energy consumption is reduced, and the production cost is reduced.

The utility model relates to the technical field of indirect air cooling water purification, in particular to an indirect cooling water bypass purification treatment system which comprises a main water pipe, a booster pump and a first ion exchanger, the second ion exchanger is arranged at the downstream of the first ion exchanger; the first ion exchanger and the second ion exchanger are respectively a cation exchanger and an anion exchanger; a first branch pipe, a second branch pipe, a first valve and a second valve are arranged on the main water pipe, and a third valve and a fourth valve are arranged on the first branch pipe and the second branch pipe respectively. According to the utility model, the cation exchanger, the anion exchanger and the plurality of valves are arranged, and the water treatment quantity of the cation exchanger and the anion exchanger can be controlled by controlling the opening degrees or switches of different valves, so that the conductivity and the pH value of intercooling water are adjusted, the adjustment of the quality of effluent water is realized, and the use requirements of different intercooling systems are met.

This invention discloses a low-temperature high-conductivity composite solid electrolyte membrane, its preparation method, and its applications, relating to the field of solid-state lithium battery materials technology. The low-temperature high-conductivity composite solid electrolyte membrane comprises: a polymer matrix composed of poly(1,3-dioxolane) and polyvinylidene fluoride-hexafluoropropylene copolymer; an ion-conducting network composed of a metal-organic framework filler with surface-modified -SO3Li groups and lithium sulfonate carbon nanotubes arranged axially along the polymer matrix; and a first antifreeze interface layer and a second antifreeze interface layer disposed on opposite sides of the polymer matrix, wherein the first and second antifreeze interface layers are respectively succinic anion exchanger-glutaronitrile eutectic plastic crystal layers composed of succinic anion exchanger, glutaronitrile, lithium salt, and nano-reinforcing agents. It is suitable for low-temperature environments such as polar scientific research equipment and spacecraft, solving the industrial problems of drastic increase in low-temperature grain boundary impedance and interface contact failure in traditional solid electrolytes.

An efficient way of isolating sialic acid from a fermentation broth is described. The sialic acid contained in the fermentation broth is produced by bacterial fermentation. The method of the invention comprises the steps of removing biomass from the fermentation broth, subjecting the resulting solution to at least one of a cation exchanger treatment and an anion exchanger treatment, and removing salts after the ion exchanger treatment. The method can provide sialic acid in the form of spray-dried sialic acid and in the form of sialic acid crystals.

Provided is a method for producing at least one cannabinoid, the method comprising providing a cell capable of producing and secreting at least one cannabinoid; providing an organic solvent or an anion exchanger; growing the cell in a growth vessel in an aqueous fermentation medium comprising a carbon source, whereby the cell produces and secretes the at least one cannabinoid; contacting the cannabinoid-comprising fermentation medium with the organic solvent or the anion-exchanger, forming a cannabinoid-comprising organic solvent or a cannabinoid-carrying anion exchanger and a cannabinoid-depleted fermentation medium; and separating the cannabinoid-comprising organic solvent or the cannabinoid-carrying anion exchanger from the cannabinoid-depleted fermentation medium.

The utility model discloses a system for removing caking of ion exchange resin for water treatment in sec-butyl alcohol production, and relates to the technical field of sec-butyl alcohol production. According to the utility model, the sec-butyl alcohol feeding pipeline is led out from the bottom of the butene removal tower of the hydration reaction device, so that sec-butyl alcohol flows into the cation exchanger, the anion exchanger I and the anion exchanger II, and the sec-butyl alcohol is used for soaking and circularly removing agglomerated resin, so that autopolymers generated in the butene hydration reaction process are quickly dissolved; and the ion exchange capacity of the resin is recovered through resin regeneration, so that the influence of autopolymer in the butene hydration reaction on the water treatment ion exchange resin is effectively solved, and the problem of caking of the ion exchange resin can be solved without replacing new resin.

The invention relates to a method for producing a carbonic acid-containing beverage, wherein an anion exchanger (AX) which is loaded with carbonate or hydrogen carbonate is mixed with an acid in an aqueous environment in order to produce an ion exchange reaction between the anion exchanger (AX) loaded with carbonate or hydrogen carbonate and the acid. The carbonate in the anion exchanger (AX) is replaced with the acid anion, whereby the carbonate or hydrogen carbonate is reacted with the hydronium ion of the acid, and carbonic acid is formed.

The present invention provides a method and apparatus for purifying organic solvents that can reduce the amount of impurities, such as metal impurities, of as many types as possible from the organic solvent. [Solution] A method for purifying an organic solvent, comprising an anion exchanger contact step of contacting the organic solvent to be purified with anion exchanger A and anion exchanger B, wherein anion exchanger A is an anion exchanger having at least one ionic form selected from the group consisting of OH form, free base form, carbonate form, and bicarbonate form, and anion exchanger B is a chelate resin containing a glucamine-type ion exchange group.