The Difference Between Dry and Wet Scrubbers

The Difference Between Dry and Wet Scrubbers

A scrubber is a device that removes particulate matter from gas or liquid streams. Scrubbers are dry or wet, depending on the method used to remove particles from the fluid stream. This article will discuss the difference between dry and wet scrubbers!

What Is a Scrubber and What Are Its Uses?

Dry scrubbers use a physical separation process to remove particles from the gas stream. Dry scrubbers are typically composed of filters that catch and remove particulates. The most common type of dry scrubber is the fabric filter, which uses a layer of cloth or other porous material to capture particles.

Wet scrubbers use a chemical reaction to remove particles from the gas stream. Wet scrubbers typically use an aqueous solution (water) to capture and dissolve particles. The most common type of wet scrubber is the mist eliminator, which uses high-pressure water jets to create a mist that dissolves particles from the gas stream.

The Difference Between Dry and Wet Scrubbers

Deciding which type of scrubber is best for your application depends on various factors, including the type and concentration of the particles in the gas stream, your budget, and the required level of purity. So what is the difference between dry and wet scrubbers?

Dry Scrubber:

  • Uses a physical separation process to remove particles from the gas stream.
  • Most common type is fabric filter.
  • Used for particles with a wide range of sizes.

Wet Scrubber:

  • Uses a chemical reaction to remove particles from the gas stream.
  • Packed bed scrubbers are the most common type.
  • Used for particles with a wide range of sizes.
  • Typically more expensive than dry scrubbers.
  • Requires more maintenance than dry scrubbers.

How Do You Choose the Right Scrubber for Your Needs?

So how do you choose the perfect scrubber for your needs? When selecting a scrubber, you need to consider the type of gas or liquid stream processed, the number of particles, and the size of the particles. Additionally, you need to consider the operating conditions of the process, such as its temperature and pressure.

Pros and Cons

So which type of scrubber is right for you? Here are the pros and cons of each kind of scrubber.

Dry Scrubbers:

  • Pros: Low cost, easy to maintain, used in various environments.
  • Cons: Not used with liquids, may not effectively remove certain types of particles.

Wet Scrubbers:

  • Pros: Used with liquids, effective at removing specific types of particles.
  • Cons: High cost, difficult to maintain, and may not suit all environments.

In the end, whether it’s a wet scrubber or a dry scrubber, you pick the scrubber that’s best for the job. Speak with your manufacturer or installer about your options.