Food

Basic Info.

Color	White
Appearance	Granulars
Type	Industrial Circulating Water Treatment Agent
Transport Package	25kg/Bag
Specification	99
Trademark	henghao
Origin	China
HS Code	39140000
Production Capacity	10000000000ton/Year

Product Description

Model NO.	H103	Trpe	Water Treatment Chemicals, Synthetic Resin
Warranty	3 Years	Sample	Free
Certificate	Wqa, SGS, TUV, ISO	Weight	25L/25kg
The Structure of Resin	Pst	Transport Package	Neutral Packing for Chemicals
Specification	H103	Trademark	Henghao Environmental Protection
Origin	Hebei China	Production Capacity	1000ton/Tons/Month

Two, the basic type of ion exchange resin
(1) Strong acid cation resin
This type of resin contains a large number of strong acid groups, such as sulfonic acid group -SO3H, which is easy to dissociate H+ in solution, so it is strongly acidic. After the resin dissociates, the negatively charged groups contained in the body, such as SO3-, can adsorb and bind other cations in the solution. These two reactions exchange H+ in the resin with cations in the solution. Strong acid resins have strong dissociation ability, and can dissociate and produce ion exchange in acidic or alkaline solutions.
After the resin is used for a period of time, it needs to be regenerated, that is, the ion exchange reaction is carried out in the opposite direction with chemicals, so that the functional groups of the resin can be restored to the original state for reuse. The above-mentioned cation resin is regenerated with strong acid. At this time, the resin releases the adsorbed cations, and then combines with H+ to restore the original composition.
(2) Weak acid cation resin
These resins contain weak acid groups, such as carboxyl-COOH, which can dissociate H+ in water and become acidic. The remaining negatively charged groups after resin dissociation, such as R-COO- (R is a hydrocarbon group), can be adsorbed and combined with other cations in the solution, resulting in cation exchange. The acidity or dissociation of this resin is weak, and it is difficult to dissociate and perform ion exchange at low pH, and can only work in alkaline, neutral or slightly acidic solutions (such as pH 5-14). These resins are also regenerated with acid (easier to regenerate than strongly acidic resins).
3. Composition of ion exchange resin matrix
The matrix (matrix) of ion exchange resin (ionresin) is mainly made of styrene (ester), which are polymerized with the cross-linking agent divinylbenzene respectively to form a long molecular main chain and cross-linked cross-linking cross-linking. A polymer with a network backbone structure of chains. Styrenic resins are used first, and acrylic resins are used later.
The adsorption properties of these two types of resins are very good, but they have different characteristics. Acrylic resin can exchange and adsorb most ionic pigments, has a large decolorization capacity, and the adsorbate is easy to elute, which is convenient for regeneration, and can be used as the main decolorizing resin in sugar factories. Styrene resins are good at adsorbing aromatic substances, and are good at adsorbing polyphenol pigments (including negatively charged or uncharged) in sugar juice; however, they are difficult to elute during regeneration. Therefore, the sugar solution is first decolorized with acrylic resin for rough decolorization and then with styrene resin for fine decolorization, which can give full play to the advantages of both.
The degree of crosslinking of the resin, that is, the percentage of divinylbenzene used in the polymerization of the resin matrix, has a great influence on the properties of the resin. Generally, resins with a high degree of cross-linking are more tightly polymerized, firm and durable, have higher density, fewer internal voids, and are more selective to ions; while resins with a low degree of cross-linking have larger pores and stronger decolorization ability , The reaction speed is faster, but the expansion is larger during work, the mechanical strength is slightly lower, and it is relatively brittle and fragile. The degree of cross-linking of ionic resins used in industrial applications is generally not less than 4%; the degree of cross-linking of resins used for decolorization is generally not more than 8%; the degree of cross-linking of resins simply used to adsorb inorganic ions can be higher.