Three Lime Kilns

Lime Kiln

The plant operates three lime kilns which originally had used conventional fiberglass fabric bags to collect the dust from the lime kiln. Due to emission rate problems and lower service of bag life, a decision was made to replace the conventional fiberglass bags with GORE® membrane/acid resistant fiberglass fabric (10 oz/yd2) filter bags in the No. 3 kiln system.

GORE® Membrane Filter Bag Experience

Collector Designation: Kiln No. 3 Baghouse
Collector Manufacturer: Local OEM
Process Description: Lime kiln exhaust
Design Airflow Rate: 210,000 A m3/hour
Particulate Collected: Lime kiln dust
No. Bags/Compartment: 54
Design Temperature: No. Bags/Collector: 54 x 8=432
Inlet Grain Loading: 14 g/m3
Bag Dimensions: 11.5" dia. x 36.75' long
Particulate Bulk Density: 35-60 lbs/cf
Cleaning System: Reverse Air
Air-to-Cloth Ratio Design: Gross 2.6:1
Bag Material: GORE-TEX® membrane/acid resistant fiberglass fabric (10 oz/yd2)
Date Installed: June 1996

Baghouse is running higher than design airflows (almost 30%) with differential pressures across the bags ranging from 70~100 mm w.g. Cleaning is with reverse air fan.

W. L. Gore & Associates, Inc., Filter Bag Guarantee

1. Maximum particulate emissions of 30 mg/Nm3 based on a flow of 210,000 A m3/hour (+ 30%) at 300º F to 500ºF.

2. Minimum bag life of 30 months.