Abstract: Systems and method for analysing contaminants of a gas sample of natural gas are provided. An interrogation light beam propagates into a chamber of a multipass gas cell receiving the gas sample. The interrogation light beam has a wavelength controlled to alternately correspond to an absorption wavelength of H2S and an absorption wavelength of an additional gas contaminant. The additional gas contaminant may for example be CO2 or H2O. In some implementation, a single laser emitter may be used to generate the interrogation light beam at the H2S and CO2 wavelengths. In some implementations, two different laser emitters may be used to generate the interrogation light beam at the H2S and H2O wavelengths. A WMS detection scheme may be used.
Type:
Grant
Filed:
March 10, 2021
Date of Patent:
April 5, 2022
Assignee:
GALVANIC APPLIED SCIENCES INC.
Inventors:
David D. Haydt, Michael B. Frish, Shin-Juh Chen, Nicholas F. Aubut
Abstract: A process and apparatus for sensing gas concentration in a gas stream involves producing a succession of difference values representing differences between successive sample values of a succession of sample values representing instantaneous reflectance of light from a compound produced by reacting a reagent with the gas being sensed and producing a gas concentration value in response to a maximum difference value of the succession of difference values.
Type:
Grant
Filed:
November 22, 2006
Date of Patent:
April 14, 2009
Assignee:
Galvanic Applied Sciences Inc.
Inventors:
Luke Edward Richardson, Peter Douglas Bush
Abstract: A process and apparatus for sensing gas concentration in a gas stream involves producing a succession of difference values representing differences between successive sample values of a succession of sample values representing instantaneous reflectance of light from a compound produced by reacting a reagent with the gas being sensed and producing a gas concentration value in response to a maximum difference value of the succession of difference values.
Type:
Application
Filed:
November 22, 2006
Publication date:
May 22, 2008
Applicant:
Galvanic Applied Sciences Inc.
Inventors:
Luke Edward Richardson, Peter Douglas Bush