Raschig Ring

16mm Plastic Raschig Ring Random Packing (3).jpg

16mm Plastic Raschig Ring Random Packing (4).jpg

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16mm Plastic Raschig Ring Random Packing

16mm Plastic Raschig Ring is a common random packing.Plastic Raschig Ring has low cost, good corrosion resistance and convenient installation. It is suitable for small and medium-scale, low-load, corrosive media mass transfer processes (such as small absorption towers, wastewater treatment towers).

product details

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Plastic Raschig Ring Material characteristics

Polypropylene (PP)

Has good corrosion resistance and heat resistance, density of 0.90-0.91g/cm³, melting point of 164-170℃, brittle temperature of -35℃, and chemical stability increases with the increase of crystallinity.

Polyethylene (PE)

Good flexibility, excellent low temperature resistance, high chemical stability, can resist the corrosion of most acids and alkalis, but relatively poor heat resistance, generally used under low temperature conditions.

Polyvinyl chloride (PVC)

low cost, good corrosion resistance and mechanical strength, but the use temperature generally does not exceed 60℃.

Polyvinylidene fluoride (PVDF)

Has outstanding corrosion resistance and high temperature resistance, can withstand temperatures up to 150℃, has good wear resistance, and also has good thermal conductivity, which helps to reduce the temperature gradient in the tower and improve heat transfer efficiency.

Chlorinated polyvinyl chloride (CPVC)

It is the chlorinated product of PVC. It has better corrosion resistance and heat resistance than PVC, and its mechanical strength is also improved, so it can be used under more stringent conditions.

Metal Raschig Ring Application

Product Name			Plastic Rachig Ring
Material			PP, PVC, CPVC, PVDF, PTFE, PE.
Life Span			>3 years
Size mm	Surface Area m2/m3	Void Volume %	Packing Number pieces/ m³	Packing Density Kg/m³	Dry Packing Factor m^-1
16	260	91	171000	94	490
25	205	90	50000	112	400
38	130	89	19000	70	305
50	93	90	6500	68	177
80	90	95	1820	66	130
Feature	High void ratio, low pressure drop, low mass-transfer unit height, high flooding point, uniform gas-liquid contact, small specific gravity, high efficiency of mass transfer.
Advantage	1. Their special structure make it has big flux, low pressure drop, good anti-impaction capability. 2. Strong resistance to chemical corrosion, large void space. energy saving, low operation cost and easy to be load and unload.
Application	These various plastic tower packing are widely used in petroleum and chemical,alkali chloride,gas and environmental protection industries with max. temperature of 280°.

Plastic Raschig Ring Advantages

Low cost and good economy
Most materials are general plastics such as polypropylene (PP), polyethylene (PE) or polyvinyl chloride (PVC). The raw material price is low and the processing technology is simple (such as injection molding). The overall production cost is much lower than metal fillers or ceramic fillers, which is suitable for large-scale industrial applications.

Strong corrosion resistance and wide application range
Plastic materials have good tolerance to various corrosive media such as acids, alkalis, and salts (depending on the material, such as PP is resistant to most acids and alkalis, and PVDF is resistant to strong corrosion). It is especially suitable for low temperature and non-strongly oxidizing corrosive conditions, avoiding the rust problem of metal fillers and the brittleness limitation of ceramic fillers.

16mm Plastic Raschig Ring Random Packing (1)

16mm Plastic Raschig Ring Random Packing (2)

16mm Plastic Raschig Ring Random Packing (3)

16mm Plastic Raschig Ring Random Packing (4)

Light weight and convenient installation and maintenance
Plastic density is low (such as PP is about 0.91g/cm³), and a single 16mm Raschig ring is small in size and light in weight. The process of packing loading and unloading, transportation and tower filling is time-saving and labor-saving, reducing the equipment load-bearing requirements and installation costs.

Simple structure and high stability
It has a regular cylindrical ring structure (height = diameter = 16mm). The packing layer is relatively evenly distributed when stacked, and it is not easy to have local blockage or deviation. The flow stability of the fluid in the packing layer is good, which is suitable for scenes with high requirements for operational stability.

The specific surface area is moderate, and the basic mass transfer requirements can be met
The 16mm small size design makes its specific surface area (about 190-230 m²/m³) and porosity (about 70%-80%) better than that of large-size Raschig rings, which can provide a certain contact area and residence time for the gas-liquid two phases, and can meet the basic mass transfer requirements such as distillation and absorption under small and medium-sized tower equipment or low-load conditions.