How do you size a baghouse?
First calculate the total cloth area of your collector by calculating the total filter area of each filter (bag diameter x 3.14 x length ÷ 144 [for number of inches in a square foot] = filter cloth area) and then multiply that figure by the total number of bags in the collector.
What is a baghouse used for?
Baghouse dust collectors are a type of fabric filter air-material separator employed for particulate removal from manufacturing and other industrial operations to keep dust and solid particulates from entering the workplace or being released to the atmosphere.
How do you calculate dust load?
To calculate loading, take the dust being sent into the collector (lb/hr) and multiply it by 7000 grains/lb. You then calculate the total system air volume per hour. Finally, divide the grains per hour by the total airflow in an hour to get grains/cu ft.
How is dust collector size calculated?
We will follow the steps below for calculation and sizing the dust/fume/mist collection system:
- Draw a floor plan of your shop.
- Determine Duct Velocity (FPM)
- Determine the Diameter and CFM of each Branch.
- Determine the Diameter and CFM of Main Duct.
- Calculate System Resistance (SP – Static Pressure)
Can velocity in Bagfilters?
In this study, the effects of can velocity on the performance test of a pilot-scale bag-filter dust collector were examined. The insufficient can velocity led to an unreasonable increase in the cleaning interval of the pulse-jet cleaning system.
How many CFM does a dust collector need?
They found most small shop stationary tools need about 1000 cubic feet per minute (CFM) of airflow to have good fine dust collection and only need about 350 CFM for good “chip collection”.
How do you calculate CFM for dust collection?
For a rectangular port, calculate the area (multiply length times width, in inches). Then, multiply that area times 28 to find the approximate flow in CFM @ 4,000 feet per minute (FPM).
Where are baghouse filters used?
Power plants, steel mills, pharmaceutical producers, food manufacturers, chemical producers and other industrial companies often use baghouses to control emission of air pollutants.
What are baghouse filters what pollution does this target?
Baghouses and Baghouse Filters Information. Baghouses, also called fabric dust collectors or fabric filters, are air pollution control devices designed to use fabric filter tubes, envelopes, or cartridges to capture or separate dust and other particulate matter (PM).
How does a cyclone and baghouse work?
A cyclone will remove most of the hydroscopic particulate before it reaches the baghouse. This helps to prevent the baghouse from getting jammed up with the particulate. Baghouses and cartridge collectors require compressed air to knock off the dust.
What is dust load?
The dust load is called DL180, being the inorganic fraction of dust smaller than 180 μm.
How many CFM should a dust collector have?
What are the 4 key design parameters of a baghouse system?
The Four Key Baghouse System Design Variables For a dust collection system to function ade- quately engineers must design and operate the system to maintain the (4) key design parameters of CFM, FPM, Vacuum Pressure and Air to Cloth Ratio (or A/C). Changes to any of these key sys- tem parameters will result in systemwide perform- ance issues.
What are the different baghouse applications?
Baghouse Basics operation and maintenance Presented by: Brent McIntosh Baghouse Applications • Dust Control •Found at end of dust control system to filter air • Bin/Silo Venting •Mounted atop bins, silos, or plenums to vent and filter air • Receiving •Used as a receiver at end of conveying line (positive or negative pressure)
How does a baghouse work?
Baghouse Function • Dust-laden air enters dirty-air chamber • Air is drawn through filter media •Dust is captured on outside of filter media •Filtered air exits through filter exhaust • Reverse air “blows down” filter media •Knocks trapped dust off of media • Material collects at bottom of hopper and exits through filter discharge Baghouse Function
What are the basic baghouse operations and maintenance?
Baghouse Basics operation and maintenance Presented by: Brent McIntosh Baghouse Applications • Dust Control •Found at end of dust control system to filter air • Bin/Silo Venting