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Re: Bag house?
- To: email@example.com
- Subject: Re: Bag house?
- From: "Rebecca Leighton Katers" <firstname.lastname@example.org>
- Date: Sun, 3 Aug 1997 11:46:27 +0000
- Comments: Authenticated sender is <email@example.com>
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- Return-receipt-to: "Rebecca Leighton Katers" <firstname.lastname@example.org>
A baghouse is a large piece of pollution control
equipment. The gases and dust coming out of a
smoke stack are passed through this bag, which
operates like a huge vacuum cleaner bag.
The walls of the bag are slightly porous,
allowing the gases to escape, but not the larger
particles of dust.
As the dust accumulates on the bag, its
cleaning efficiency increases initially, but then
it gets clogged.
At that point, the bag is shaken or scraped to
reduce the clogging. The dust falls to the
bottom to be collected and removed.
The bag has a limited life, and has fluctuating
periods of ineffectiveness when it is too clean, clogged or
Some emissions are "stickier" and more prone to
clog the bag, reducing it's effectiveness.
Some gases are partially trapped as they get
stuck to dust particles in the bag. Some
gases condense into a liquid as they cool down
before leaving the bag.
Super-fine particles, like those EPA proposes to
regulate now, often pass through the baghouse ---
which means that the most dangerous particles are
not being collected.
Rebecca Leighton Katers
Clean Water Action Council of N.E. Wisconsin
2220 Deckner Avenue
Green Bay, WI 54302