What is the primary function of a baghouse filter in air pollution control?

What is the primary function of a baghouse filter in air pollution control?

• A. Removes gases from exhaust streams
• B. Removes particulates from exhaust streams
• C. Increases humidity in exhaust
• D. Adds fragrance into exhaust

Answer: (B)

Baghouse filters are built to capture solid particles from exhaust streams. As the dirty gas passes through the fabric filter bags, dust, fly ash, and other particulates adhere to and are trapped by the fabric, while the cleaned gas exits. The collected material is periodically removed from the bags (often by shaking or pulsing air into the bags) and dropped into a hopper for disposal or reuse. This setup provides high removal efficiency for particulate matter, which is why it’s the go-to method for airborne solids. It isn’t designed to remove gases or vapors, which is handled by other controls like scrubbers or activated carbon adsorbers, and it doesn’t affect humidity or fragrance in the exhaust.

Baghouse filters are built to capture solid particles from exhaust streams. As the dirty gas passes through the fabric filter bags, dust, fly ash, and other particulates adhere to and are trapped by the fabric, while the cleaned gas exits. The collected material is periodically removed from the bags (often by shaking or pulsing air into the bags) and dropped into a hopper for disposal or reuse. This setup provides high removal efficiency for particulate matter, which is why it’s the go-to method for airborne solids. It isn’t designed to remove gases or vapors, which is handled by other controls like scrubbers or activated carbon adsorbers, and it doesn’t affect humidity or fragrance in the exhaust.