Patent ID: 8021617
Filing Date: 2011-09-20
Classification: G01N,Y10T

Abstract:
1. A system for monitoring sulfur trioxide/sulfuric acid levels in an emission stream comprising sulfur trioxide and water vapor flowing through an exhaust, the system comprising: a probe positionable adjacent to the exhaust to be able to extract essentially simultaneously a first supply of sample gas from the exhaust and a second supply of sample gas from the exhaust, wherein the second supply of sample gas is separate from the first supply of sample gas, the probe comprising the following elements housed within an outer probe shell: the system further comprising: a condenser for condensing sulfuric acid in the first supply of sample gas carried by the unspiked line; a condenser for condensing sulfuric acid in the spiked gas carried by the outlet line; means for measuring sulfuric acid content in the first supply of sample gas carried by the unspiked line; and means for measuring sulfuric acid content in the spiked gas carried by the outlet line; whereby the system is configured such that a comparison of the measuring of the sulfuric acid content in the first supply of sample gas carried by the unspiked line with the measuring of sulfuric acid content in the spiked gas carried by the outlet line can help validate the system.