SO.sub.3 flue gas conditioning system
US4779207A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 1987 |
| Grant date | Oct 18, 1988 |
| Priority date | — |
| Expiry date | Jan 6, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D53/50
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An air pollution control system for injecting a conditioning agent into the flue gas of a power generator. The conditioning agent changes the resistivity of particulate matter in the flue gas, rendering the particulate matter more easily able to accept an electrostatic charge. Control of the conditioning gas injection rate is monitored by periodically sampling the average input power supplied to the power supplies of the electrostatic flue gas conditioning system. A proportional-integral controller receives the signal representing the difference between the average input power and a predetermined threshold signal. The control signal produced by the proportional integral controller causes incremental changes in the rate at which the conditioning agent, such as SO.sub.3, is added to the flue gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.