What are the types of chemical fillings ?

The chemical fillings have excellent acid and heat resistance, and can withstand corrosion from various inorganic acids, organic acids and organic solvents except hydrofluoric acid. They can be used in various high and low occasions. They have a wide range of applications and can be used in drying towers, absorption towers, washing towers and regeneration towers in chemical, metallurgical, coal gas oxygen production and other industries. According to the material, they can be divided into three categories: ceramic fillers, plastic fillers and metal fillers.

There are many types of chemical fillers, but they can be summarized into four types:

1. Granular chemical packing: Granular fillers are the earliest fillers, made of inorganic ceramsite or quartz sand. The main advantages of this filler are rough surface, convenient attachment of microorganisms, and strong ability to intercept suspended matter; but large resistance and easy clogging are his important defects!

2. Honeycomb or corrugated plate chemical fillings: This type of filler is usually made of glass fiber reinforced plastics or plastics (polyethylene, polystyrene and polypropylene, etc.). Its advantages include light weight, high porosity, high strength and good corrosion resistance; its disadvantages include: the balance between the growth and shedding of microorganisms is not well controlled, and it is difficult to obtain a uniform flow rate.

3. Spherical lightweight ceramsite: Spherical lightweight ceramsite generally uses clay as its raw material, adds appropriate chemical raw materials as expansion agent, and is fired at high temperature. Compared with traditional fillers, the advantages of spherical lightweight ceramsite are: high strength, large porosity, large specific surface area, suitable density, good chemical stability, and strong biological adhesion; the disadvantages are: high energy consumption and high preparation cost. my country's spherical lightweight ceramsite aerated biological filter and its combined process have been widely used in domestic sewage treatment, printing and dyeing wastewater treatment, and beer wastewater treatment. In many years of practice, it has achieved outstanding results.

4. Irregular porous chemical fillings: The previous fillers include Rasching Ring, Pall Ring, etc.; the current fillers include Hacketten balls and multi-faceted lightweight balls, etc., and the materials used are tower internals, ceramics, graphite, plastics and metals. The main advantages are simple structure and low price; however, uneven fluid distribution is its disadvantage.

Chemshun Ceramics produces chemical packings of various materials, such as ceramic ball rings, plastic Raschig rings, metal saddle rings.... Welcome to consult