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[Chemical Knowledge]：Production and manufacturing method and process flow of polymeric ferric sulfate

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Polymeric ferric sulfate manufacturing method

1. Introduction

polymeric ferric sulfate (PFS) is an inorganic polymer flocculant, widely used in water treatment, chemical industry, papermaking, medicine and other fields. It has excellent flocculation performance, can effectively remove suspended solids, colloids and pigments and other pollutants in water, improve water quality. This article will introduce the manufacturing method of polymeric ferric sulfate, aiming to promote its application in the field of chemical production raw materials.

2. Materials and Methods

1. Material

ferrous sulfate, sulfuric acid, oxidants, etc.

2. Equipment

reaction kettle, agitator, metering pump, storage tank, etc.

3. manufacturing method

(1) acidification oxidation method

ferrous sulfate and sulfuric acid mixed according to a certain proportion, adding oxidant, oxidation reaction under suitable temperature and acidity conditions, the generation of polymeric ferric sulfate. The method is simple, but the product quality is affected by the quality of raw materials, reaction temperature and acidity.

(2) hydrolysis polymerization method

to hydrolyze ferrous sulfate into ferrous hydroxide, and then add oxidizing agent to carry out oxidation polymerization reaction to generate polymeric ferric sulfate. The product quality is stable, but the operation is complicated.

(3) Composite polymerization method

Ferrous sulfate, sulfuric acid and an oxidizing agent are added into a reaction kettle according to a certain proportion, and a composite polymerization reaction is carried out under stirring to generate polymeric ferric sulfate. This method combines the advantages of acidification oxidation method and hydrolysis polymerization method, the product quality is stable and the operation is simple.

3. results and discussion

1. Product quality

Through different manufacturing methods, different mass fractions of polyferric sulfate products can be obtained, and the general mass fraction is between 10% and 30%. Product quality is related to the quality of raw materials, reaction conditions and other factors.

2. The effect of reaction conditions on product quality

(1) Temperature: As the temperature increases, the reaction rate accelerates, but too high temperature will cause product decomposition and affect product quality.

(2) Acidity: If the acidity is too low, the reaction rate will slow down and the molecular weight of the product will decrease; if the acidity is too high, it will cause the product to decompose and affect the product quality.

(3) Types and dosage of oxidants: Different oxidants have an impact on product quality, and too much or too little will affect product quality.

4. conclusion

polyferric sulfate as an important inorganic polymer flocculant has a wide application prospect in the field of chemical production raw materials. Polyferric sulfate products with different mass fractions can be obtained by different manufacturing methods, and the reaction conditions have an important influence on the quality of the products. In actual production, appropriate manufacturing methods and operating conditions should be selected according to specific conditions to ensure product quality and production efficiency. At the same time, we should pay more attention to the environmental protection and safety issues in the manufacturing process, and promote the green and sustainable development of polyferric sulfate manufacturing.

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