• 2022-06-21

In addition to conventional ion exchange resins, micron fine-grained ion exchange resins are also developing rapidly. This kind of resin is mainly used for chromatographic separation. Therefore, a sufficiently small particle size (100~400 mesh) and a relatively narrow particle size distribution are key technical indicators. Suspension polymerization can prepare spheres with diameters ranging from ...

• 2022-05-23

(3)Suspension Crosslinking Copolymerization method Suspension polymerization is a method for preparing spherical polymers. Copolymerization is one of the ways to prepare binary or ternary copolymers and improve the properties of polymers. Suspension Crosslinking Copolymerization is a unique polymerization reaction used to prepare ion exchange resin skeleton copolymers. Suspension polymerization is...

• 2022-05-16

Crosslinked polystyrene is the matrix for the synthesis of a variety of ion exchange resins. The benzene ring on its high molecular chain can carry out many substitution reactions like small molecular aromatic hydrocarbons, so as to introduce various ion exchange groups to make ion exchange resin with excellent performance. 1. Preparation of crosslinked polystyrene spheres （1）Styrene monomer The p...

• 2022-04-16

Because phenolic ion exchange resin, polystyrene ion exchange resin and polyacrylic acid ion exchange resin show many excellent properties, the synthesis technology of ion exchange resin has developed rapidly, and inorganic ion exchanger and natural ion exchanger have been gradually replaced by synthetic organic ion exchange resin. In addition to strong acidic and weak acidic cation exchange resin...

• 2022-03-10

Application of ion exchange resin 1、 Water treatment The amount used for water treatment is large, accounting for more than 90% of the output of ion exchange resin. There are divalent calcium, magnesium ions and trivalent iron ions in industrial water, which is easy to scale pipelines and boilers. The process of removing these metal ions is called water softening. The early softening of water was ...

• 2022-02-18

The exchange reaction of the ion exchange resin is similar to the replacement reaction in the solution. The exchangeable ions carried by the functional groups immobilized on the polymer backbone can be dissociated in the aqueous solution. For example, the hydrogen ions can be dissociated from the sulfonic acid resin. Such ions can move freely over a wide range and diffuse into the solution. At the...

• 2021-11-01

The chemical desalting system is selected according to the raw water quality and effluent requirements through technical and economic comparison. A chemical desalination system is usually composed of some units. For example, the common primary chemical desalination system is composed of three units: cation exchange unit, decarbonization (carbon dioxide removal) unit and anion exchange unit. Each i...

• 2021-10-11

(1) The cation exchanger is located in front of the anion exchanger. The reasons are as follows: a. the exchange capacity of strong base anion exchange resin is low, and the ion exchange reaction efficiency of strong base anion resin in acidic water (H-type cation resin exchange water) is high, and the working exchange capacity can be fully utilized. b. After the raw water is exchanged by H-type c...

• 2021-09-30

Chemical desalination refers to the process in which various ions contained in water are removed by ion exchange reaction with ion exchange resin, also known as ion exchange demineralized water treatment. When various cations in the water react with the cation exchange resin, the water contains only hydrogen ions exchanged from the cation resin; After various anions in water react with anion excha...

• 2021-07-16

In industries such as thermal power plants, petroleum and chemical industries, microelectronics, nuclear, food and pharmaceutical industries, all require water close to the quality of distilled water. With the rapid development of industrial technology, not only the amount of water is increasing rapidly, but also the requirements for water quality are constantly increasing. So far, the ion exchang...