Hydrogen sulfide monitoring system

G - Physics – 01 – N

Patent

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G01N 21/78 (2006.01) G01N 37/00 (2006.01)

Patent

CA 2518581

A system for measuring the quantity of hydrogen sulfide gas in a sulfur dioxide gaseous stream. A colorimeter is calibrated by a metered quantity of heated hydrogen sulfide calibration gas. A gas sample is grabbed from a source, generally a furnace, and a metered quantity is conditioned and introduced into a reaction cell. A probe in the reaction cell communicates with the colorimeter. The colorimeter measures the quantity of the hydrogen sulfide. A process logic controller monitors and operates the system and its internal and external components.

L'invention concerne un système destiné à mesurer la quantité de sulfure d'hydrogène gazeux dans un flux gazeux de dioxyde de soufre. Un colorimètre est étalonné au moyen d'une quantité mesurée d'un gaz d'étalonnage de sulfure d'hydrogène chauffé. Un échantillon de gaz est prélevé à partir d'une source, généralement un four, et une quantité mesurée est conditionnée et introduite dans une cellule de réaction. Une sonde dans la cellule de réaction communique avec le colorimètre. Le colorimètre mesure la quantité de sulfure d'hydrogène. Un contrôleur à logique de traitement surveille et met en oeuvre le système et ses composants internes et externes.

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