Paper 3: Electrostatic Precipitation for Large Boilers

Abstract

The paper begins with a brief description of the principles of electrical precipitation and continues with a section on mechanical and electrical design which covers casings, collector systems, discharge systems, rapping systems, insulators, rectifiers both mechanical and static, ‘sectionalization’ of precipitators, hoppers, and automatic control. A third section on operation covers points to be observed during commissioning, bringing boilers on load, and action in case of faults. The final section on maintenance deals with temporary action for short shut-down periods to eliminate faults that have occurred in operation and with long-term maintenance during boiler outage periods.