Method of continuously conditioning gas, preferably natural gas

F - Mech Eng,Light,Heat,Weapons – 23 – K

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F23K 5/00 (2006.01)

Patent

CA 2734365

Before being fed into a pipe, particularly a network of pipes for the supply of consumers, gas, preferably natural gas, is continuously conditioned. The pressurized gas is removed from a reservoir, expanded, and heated to a predefined temperature before or after the expansion thereof in that a branched-off partial flow of the fed-out natural gas is mixed with oxygen and the resulting burnable gas is catalytically burned. The fed-out gas is heated with the thermal energy that is produced. For this purpose, a partial exhaust gas flow is branched off from a hot exhaust gas flow released during the catalytic combustion and conducted into a first container together with the cold burnable gas. The burnable gas is mixed with the supplied exhaust gas flow in the first container and is heated, and the mixture composed of the exhaust gas and burnable gas preheated in this way is conducted away from the first container into a second container, where it is subjected to the catalytic combustion, the heat of which is used to heat the fed-out gas to be conditioned to the respectively desired temperature.

Du gaz, en particulier du gaz naturel, est conditionné de manière continue avant d'être injecté dans une conduite, en particulier un réseau de conduites pour l'alimentation de consommateurs. Le gaz sous pression est prélevé d'un réservoir, détendu et chauffé, avant ou après sa détente, à une température prédéfinie par mélange d'un courant partiel prélevé du gaz naturel déstocké avec de l'oxygène et combustion catalytique du gaz combustible ainsi formé, le gaz déstocké étant chauffé par l'énergie thermique résultante. Selon l'invention, un courant partiel de gaz brûlés est prélevé d'un courant de gaz brûlés chaud dégagé par la combustion catalytique et est conduit avec le gaz combustible froid dans un premier réservoir. Dans le premier réservoir, le gaz combustible est mélangé au courant partiel de gaz brûlés amené et est ainsi chauffé, et le mélange constitué de gaz brûlés et de gaz combustible ainsi préchauffé est conduit du premier réservoir dans un deuxième réservoir dans lequel il est soumis à la combustion catalytique dont la chaleur permet de chauffer le gaz déstocké à conditionner à la température respectivement souhaitée.

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