Method of measuring multicomponent constituency of gas...

Details Method of measuring multicomponent constituency of gas... Method of measuring multicomponent constituency of gas...

G - Physics

01

N

354/29, 73/55

G01N 21/00 (2006.01) G01J 3/453 (2006.01) G01N 21/35 (2006.01) G01N 33/00 (2006.01) G01J 3/28 (2006.01) G01N 1/28 (2006.01) G01N 1/38 (2006.01)

Patent

CA 1317782

-27- Abstract of the Disclosure A method is disclosed of making an on-line gas analysis of a multicomponent gas emission flow by (a) continuously sequestering a sample flow from the gas emission flow, which sample flow has been filtered to substantially eliminate solid or liquid particles, diluted to lower its dew point to below room temperature, and changed in either temperature and/or pressure to be substantially the same in temperature and pressure as that of gases used to create reference transmission frequency spectral data deployed in step (d); (b) continuously irradiating the sample flow with an electromagnetic radiation beam while modulating the amplitude of infrared frequencies in the audio frequency range of the beam, either prior to or immediately subsequent to irradiation of the sample flow, to produce electromagnetic signals having discernible amplitude variations resulting from spectral interference patterns; (c) detecting and collecting the signals at a sufficiently high rate to substantially completely distinguish between adjacent spectral pattern amplitude peaks without mutual spectral interference and to permit analysis of the signals in real time: and (d) analyzing the signals in real time by (i) mathematically manipulating the signals in accordance with Beer's Law to create reformed background-corrected data, and (ii) applying reference transmission frequency spectral data to the reformed data for each suspected gaseous component to give a linear quantitative measure of the presence of each and every suspected gas component in the gas emission flow.

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