PVC Emulsion Resin Spray Dryer (Aeropulse)

Application

Aeropulse pulse-jet collector (1,800 bags); gas flow: 56,000 acfm at 140°F; air-to-cloth ratio: 3.3 gross:3.9 net; inlet loading: 8.7 gr/acf; particle size: less than 5.0 mm.

Optimization Potential

High pressure drop (more than 6") across conventional polyester felt filter bags after nine months of service caused a reduction in dryer vacuum, forcing a ten percent decrease in production. The company continued at a reduced production level for an additional 2.5 months, until bags could be changed out during an annual two-week shutdown.

Solution

GORE® membrane/heavy duty polyester felt filter bags were installed.

Results

The first set of GORE® membrane filter bags lasted 50 months and provided more than 48 months of service at maximum production. Over a four-year period, three bag changeouts were averted, saving $43,200 in labor and $32,400 in bags. Higher production rates for 10 months (4 years x 2.5 months/year) resulted in additional production worth $1,058,000. Total savings over a four-year period is estimated to be more than $130,000.