Boiler flue gas conditioning system
US5678493A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1995 |
| Grant date | Oct 21, 1997 |
| Priority date | — |
| Expiry date | Aug 7, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D53/323
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A flue gas conditioning system generates sulfur trioxide which is injected into boiler flue gas to condition it by reducing the resistance of the particulate matter entrained in the flue gas. The conditioned flue gas is passed through an electrostatic precipitator which collects the particulate matter by electrostatic precipitation. The sulfur trioxide concentration in the flue gas is measured with a mass spectrometer downstream of where the sulfur trioxide was injected into the flue gas and upstream of the electrostatic precipitator. The concentration of the sulfur trioxide in the flue gas is measured with a mass spectrometer at a point where the injected sulfur trioxide has uniformly mixed with the flue gas. The measured sulfur trioxide concentration is used to control the flue gas conditioning system, such as by comparing the measured concentration to a desired concentration range and adjusting the amount of sulfur trioxide being injected into the flue gas accordingly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.