Method and apparatus for removing condensate from combustion...

B - Operations – Transporting – 01 – D

Patent

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B01D 8/00 (2006.01) B01D 45/04 (2006.01)

Patent

CA 2240423

A trap for removing moisture from sampled gases containing moisture in vapor and/or entrained liquid form includes an elongate conduit (4) having a plug (2) substantially centrally positioned therein to prevent flow directly through the conduit (4), the conduit (4) being provided with a radially directed hole (6-7) on each side of the plug (2). A tube (1) is substantially concentric with the conduit (4) and has stoppers (3) at opposite ends thereof with openings therein for the conduit (4) to pass therethrough. At least one of the stoppers (3) is provided with a second opening (5) which can be stopped during sampling and unstopped for draining. During sampling, sample gases are drawn into one end of the conduit (4) and exhausted radially into the space between the conduit (4) and the tube (1) such that vapor condenses on the inner surface of the tube (1), entrained liquid collects on the inner surface and the gas enters the conduit (4) on the other side of the plug (2) and exhausts to an analyzer.

L'invention porte sur un piège servant à extraire d'un échantillon de gaz l'humidité présente sous forme de vapeur et/ou de liquide entraîné, et consistant en un conduit allongé (4) comportant sensiblement en son centre un bouchon (2) empêchant le passage direct du flux dans le conduit (4), lequel est percé d'un trou radial (6, 7) de chaque côté du bouchon (2). Un tube (1) sensiblement concentrique au conduit (4) est muni à ses extrémités opposés d'obturateurs (3) percés d'ouvertures livrant passage au conduit (4). L'un au moins des obturateurs (3) est percé d'un deuxième orifice (5) pouvant être fermé pendant l'échantillonnage et ouvert pendant la vidange. Pendant l'échantillonnage, les échantillons de gaz entrent par l'une des extrémités du conduit (4) puis passent radialement dans l'espace compris entre le conduit (4) et le tube (1), de manière à ce que la vapeur d'eau se condense sur la surface intérieure du tube (1), que le liquide entraîné soit recueilli sur la surface intérieure et que le gaz pénètre dans le conduit (4) de l'autre côté du bouchon (2) et sorte en direction de l'analyseur.

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