Baghouse Basics

SKU: C-797Duration: 31 Minutes Certificate Included

Pay-per-view (PPV) format perfect for individual users.

Get immediate access to this interactive eLearning course online. Must be used within 30 days, expires 48 hours after launch.

Great for in-person classroom training or as an alternative to DVD.

Includes printable documents and Convergence Video Player for Windows systems. Content expires after 1 year.

Ideal for corporate licensing and volume users who also need administrative tracking and reporting on training.

Get this interactive eLearning course into your LMS or learn how you can leverage our LMS to deliver training to your workforce.

Need multiple courses or have lots of users? Just let us know a little more about what you need and we’ll get you some great volume pricing.

 Need help deciding? Compare delivery formats.

Course Details

Specs

Training Time: 31 minutes

Compatibility: Desktop, Tablet, Phone

Based on: Industry Standards and Best Practices

Languages: English

Baghouses are used in many different applications to remove particulate matter from air and gas streams. They typically have very high removal efficiencies, often over 99%. The fabric bags used in baghouses must be cleaned intermittently to remove the dust cake that builds up. This course discusses the cleaning mechanisms used in the three main baghouse designs - shaker, reverse air, and pulse jet. It also covers the different fabrics that can be used, filter canisters with pleated filter media, and sonic cleaning horns. When selecting or designing a baghouse, you must know several characteristics of the air or gas stream and the particles it contains. This course lists the critical design variables and also the calculations used to select an appropriate baghouse design and size it properly.

Learning Objectives

At the end of this module, you will be able to:

  • List the three main purposes of baghouses
  • Identify and describe the main components of a typical baghouse
  • Identify and describe the operation of shaker baghouses
  • Identify and describe the operation of reverse air baghouses, including continuous reverse air baghouses
  • Identify and describe the operation of pulse jet baghouses
  • Describe how cartridge filters, sonic horns, and inlet diffusers or deflectors can enhance baghouse operations
  • List important variables for baghouse design
  • Define the terms "air-to-cloth ratio," "pressure drop," "grain loading," and "can velocity"

Key Questions

The following key questions are answered in this module:

Baghouses have been around for a while but they don't seem very sophisticated. Why are they still sometimes used?
Baghouses have very high cleaning efficiencies (often over 99%) and can remove even very small particles from air and gas flows that vary, so they are still appropriate in many applications.

Why is it desirable to have the dust cake reform quickly on bag surfaces in a baghouse?
In baghouses, it is the dust cake, not the fabric, that acts as the main filtering medium. So, although it increases the pressure drop, it is important to reform the dust cake quickly in order to maintain the particle removal efficiency of the baghouse.

Can a baghouse be used if the particles being removed from an air or gas stream are combustible or explosive?
Continuous reverse air baghouses have a round hopper and no ledges for dust to build up on, so they can be used to remove combustible dusts from air and gas streams.

Must all baghouses be taken offline (i.e. the incoming air or gas flow be turned off) in order to clean the dust cake off the bags?
Shaker style and conventional reverse air baghouses require that the baghouse or a portion of the baghouse be taken offline during cleaning, but pulse jet baghouses and continuous reverse air baghouses are designed for continuous operation, even during cleaning.

Why do some baghouses have an inlet diffuser and some don't?
Inlet diffusers can be used to slow down an incoming air or gas flow to allow heavier particles to drop out by gravity, or to help distribute the air or gas flow more evenly around the bags. However, in many cases, they are not needed or even helpful.

Sample Video Transcript

Below is a transcript of the video sample provided for this module:

There are many different sizes and designs, but baghouses all operate in the same basic way. One, the dust latent or particle latent air or gas stream, enters the baghouse, travels along the surfaces of multiple fabric tubes, and then passes outward or inward through the fabric. Two, the larger particles fall down into a hopper, while the smaller particles accumulate on the fabric surfaces. Three, a cleaning mechanism occasionally removes the particles from the fabric tubes and they fall down into the hopper from which they are discharged. Four, the clean air or gas stream exits from the top of the baghouse.

Additional Resources

Use the additional resources and links below to learn more about this topic:

  • EPA Air Pollution Control Cost Manual, 6th Edition, January 2002, Section 6 - Particulate Matter Controls, Chapter 1 Baghouses and Filters

Customer Q&A

Ask a Question

Sorry, we're missing some information

I would like to have several employees take multiple courses. How can I set that up?

We're in the process of making bulk course and multiple user purchases easier. But for now, you can order multiple courses and contact us with details on who you'd like to assign courses to. We can set up each user's training plan and make sure everyone gets the eLearning assignments they need.

Can I get a free full-length preview of a course to see what this course covers?

While we do our best to offer details on course contents, we don't normally offer full-length previews. But please contact us with more details for a better understanding of what your organizaton needs and how we can help.

Do I get a certificate when I complete a course?

Yes. All of our courses allow you to print a completion certficate upon successfully passing the integrated test at the end of each eLearning course.

How do I log in to take a course that I have already paid for?

You'll receive an email with login details moments after you purchase your pay-per-view (PPV) course. Just click the login link and enter the user name and password provided.

Do you have courses in different languages?

Yes. While all of our courses are originally produced in English, we develop many courses in a growing number of languages, including Chinese, Dutch, German, Italian, Japanese, Korean, Polish, Portuguese, Russian, Spanish, Tamil, and Thai. Available languages are normally displayed in the Course Details section on each course page.
Added to Cart! Click here to view your cart.