Metal vs. Plastic: The Differences Between the Two Waste Disposal Methods

Metal and plastic materials differ significantly in terms of corrosion resistance, cost, and service life.Starting from actual applications, the company analyzes the advantages and disadvantages of each material, helping customers choose the best solution based on the composition of the waste gas, their budget, and their maintenance requirements, thus improving waste gas treatment efficiency and economic benefits.

Why should material selection affect exhaust gas treatment?

The materials used in the construction of air treatment equipment are directly related to the stability and lifespan of the system.Metals (such as stainless steel, carbon steel) and plastics (such as PP, PVC) are each suitable for certain applications. For instance, metals can withstand high temperatures and pressures, while plastics are better at withstanding strong acids and alkalis.If the material is chosen incorrectly, the equipment may be scrapped before its time, or the processing efficiency may be greatly reduced.

The strengths and weaknesses of metal.

They can stand high temperatures and can withstand a lot of wear and tear.

Metal is especially suitable for use in high-temperature waste gas scenarios, such as the treatment of waste gas from incinerators.Stainless steel can work at temperatures of 300 ° C, while plastics would have melted by then.However, metal is easily corroded by acidic exhaust gases containing chlorine or sulfur, so special coatings or higher-grade stainless steel must be used in these cases.

The cost is high, but the lifespan is long.

The initial investment for a set of metal equipment is two or three times that of plastic, but it will last for ten or eight years without any problems.It is most suitable for companies with sufficient funds and long-term stable operation, such as chemical plants with continuous production lines.

Plastic materials are used in a wide range of applications.

The enemy of acid and alkali gases.

PP has a natural resistance to "tough customers" like hydrochloric and sulfuric acids, so plastic equipment is a good choice for treating acid fumes in electroplating plants and laboratories.But be careful not to let the temperature go above 80 ° C, or it will soften and deform.

Light, flexible and economical.

Plastic equipment is only a third the weight of metal, so installation and transport are much easier.Temporary workshops or small and medium-sized enterprises that have been remodeled can save a lot of money in the initial stages by using plastic.

These are the three points to consider in choosing the right type of machine.

1. Exhaust composition: First check the pH and temperature of the fumes. If the fumes are highly corrosive, choose plastic; if the fumes are at a high temperature, choose metal.

2. Budget planning: Long-term projects use metal to spread out costs, but short-term projects use plastic for flexibility.

3. Maintenance: Metal requires regular anti-corrosion treatment, while plastic needs protection against UV rays.

Finally, there is one more thing to keep in mind: Some manufacturers are now combining metal and plastic in their products, using metal for the outer shell and plastic for the inner lining to prevent corrosion. This combination is becoming a new trend.