Natural gas feeding process of catalytic burner and...

Details Natural gas feeding process of catalytic burner and... Natural gas feeding process of catalytic burner and...

F - Mech Eng,Light,Heat,Weapons

23

D

F23D 14/18 (2006.01) F23D 14/64 (2006.01) F23D 14/66 (2006.01)

Patent

CA 2044610

The distribution-pressurized natural gas is supplied via a conduit (C1) arranged in the piston (P) of an electrovalve (EV) in a nozzle (BG) of which the outlet leads to a cone (C) which provides, with the nozzle (BG), a ring-shaped opening (BA) which, connected to the atmosphere, acts as a secondary nozzle for injecting air into the gas flow. The cone (C) is followed by a cylindrical element (S1) then by an abrupt widening (BC) section (S2) which opens into a heat exchanger (EC) which is in contact with a substrate impregnated with a catalytic material (MC) which oxidizes fuel gas. A small amount of air is sucked up by the widening (BC) and mixed with the gas. This mixture is then treated in the exchanger (EC) up to the transformation temperature of the sulphur-containing compound and the sulphur is then oxidized.

Le gas naturel sous sa pression de distribution est amené par un conduit (C1) ménagé dans le piston (P) d'une électrovanne ,EV) dans une buse (BG) dont la sortie débouche dans un cône (C) ménageant, avec la buse (BG), une ouverture annulaire (BA) qui, reliée à l'atmosphère, sert de buse secondaire pour l'injection d'air dans le flux de gaz. Le cône (C) est suivi d'une partie cylindrique (S1) puis d'un élargissement brusque (BC) de section (S2) qui débouche dans un échangeur de chaleur (EC) qui est en contact avec un substrat imprégné d'un matériau catalytique (MC) d'oxydation du gaz combustible. Une faible quantité d'air est aspirée grâce à l'élargissement (BC) et mélangé avec le gas. Ce mélange est ensuite chauffé dans l'échangeur (EC) jusqu'à la température de décomposition du composé contenant du soufre et ce dernier est alors oxydé.

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