17 results about "Anion exchanger" patented technology

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.

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.

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 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.

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 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 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.

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.

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.

This utility model provides an anion exchanger backwashing system, relating to the field of chemical desalination and demineralized water production technology. The anion exchanger backwashing system includes an anion exchanger, a resin trap, a mixed ion exchanger, and a storage tank connected in sequence. A backwashing pipeline is connected to the storage tank, and a backwash pump and a backwash regulating valve are installed on the backwashing pipeline. An inlet valve is installed on the connecting pipeline between the resin trap and the mixed ion exchanger. The other end of the backwashing pipeline is connected to the connecting pipeline between the resin trap and the inlet valve. The anion exchanger backwashing system can effectively flush away broken resin stuck on the water cap during the service life, ensuring the water production capacity of the anion exchanger, reducing resin breakage, and effectively extending its service life.

A method for removing nitrogen oxides and / or sulfur oxides from a gas to be treated containing nitrogen oxides and / or sulfur oxides and carbon dioxide, the method includes a gas supply step of supplying the gas to be processed to an anion exchanger filled tower filled with an anion exchanger.

Heavy metal-free, recyclable, environmentally friendly molded parts and insulating materials (1), containing carbon dioxide and / or pollutant-adsorbing materials (1), excluding silver and iron (2) at least one denatured fungal mycelium as the first component, (3) at least one particulate second component selected from the group consisting of (3.1) Alkaline earth oxides and / or hydroxides, (3.2) Mixtures of at least one alkaline earth oxide and / or hydroxide (3.1) and at least one component (3.2.1) which forms sparingly soluble carbonates with carbon dioxide and / or which adsorbs carbon dioxide, (3.3) pyrogenic biochars and (3.3) Anion exchangers in the OH form, metal-organic frameworks (MOFs), covalent organic frameworks (COFs) and porous electron-rich covalent organonitride frameworks (PECNOFs), wherein the filaments (2.2) of the denatured fungal mycelium (2) form a network (2.1) that completely or partially encloses the particles of the at least one particulate second component (3).

A water treatment method according to the present invention comprises the steps of: removing dissolved oxygen from water to be treated, which contains dissolved oxygen and an organic substance, by means of a first deoxygenation device (33); irradiating the treated water of the first deoxygenation device (33) with ultraviolet rays by means of 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 an 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 water treated by the ultraviolet irradiation device (34), and the water treated by the ultraviolet irradiation device (34) is passed through the anion exchanger (A) of the ion exchanger filling device (35) at an air speed of less than 160 ( / h).

The present application relates to the technical field of resin regeneration, and particularly relates to a method for accurately judging the end point of anion exchanger regeneration, which comprises the following steps: injecting an ionic liquid membrane alkali into an alkali metering tank in an anion exchanger, and backwashing the anion exchanger; after resin particles in the anion exchanger sink, discharging the upper water in a resin tank; adding a regeneration liquid into the resin tank and opening an alkali outlet valve, and recording the real-time foam amount of the alkali outlet valve by using a camera; inputting the real-time foam amount into a trained neural network model, and determining the regeneration liquid feeding time corresponding to the maximum value of the real-time foam amount by using the neural network model; based on the regeneration liquid feeding time, closing the alkali outlet valve, and continuously feeding the regeneration liquid for a predetermined time, so as to accurately judge the end point of the anion exchanger regeneration. The method is more accurate in judging the successful end point of the anion exchanger regeneration, and is more efficient; and the method avoids the possibility that the poor quality of desalted water caused by unqualified regeneration affects the safe operation of a boiler.