Economic evaluation of fabric filtration versus electrostatic precipitation for ultrahigh particulate collection efficiency
Abstract
The economic selection in each case described was dependent on the particulate emission limit to be met, the physical and chemical characteristics of the coal and fly ash, and the bag replacement schedule of the fabric filter. For systems designed to meet the Federal particulate emission limitation of 0.1 lb/10 to the 6th power BTU, the electrostatic precipitator had a clear advantage in one of the four cases. For systems designed to meet the more stringent New Mexico regulations, the fabric filter had a significant economic advantage in three of the four cases. If designs are based on obtaining a clear stack plume, the fabric filter has a significant advantage. Precipitator costs increase significantly as collection efficiency requirements are increased. Baghouse costs, on the other hand, remain essentially constant due to their inherently high collection efficiency. Baghouses become the economic choice for all coals, even low-resistivity eastern ones, when permissible emission levels drop much below the current NSPS of 0.1 lb/10 to the 6th power BTU.
- Publication:
-
Final Report Stearns-Roger Corp
- Pub Date:
- June 1978
- Bibcode:
- 1978src..rept.....S
- Keywords:
-
- Economic Analysis;
- Electrostatic Precipitators;
- Fabrics;
- Filtration;
- Materials Recovery;
- Ashes;
- Coal;
- Comparison;
- Reliability Engineering;
- Engineering (General)