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US 9,540,240 B2Granted
Soot control in oxidation reactions
AssigneePraxair Technology, Inc.
InventorsBradley Damstedt, Lawrence Bool, Michael Riley
Life of this patent
Estimating the term…
Abstract
Soot formation in the partial oxidation of carbonaceous feed is controlled by controlling the momentum of the oxidant stream relative to the momentum of the carbonaceous feed stream.
Claims14
An improved method of treating a gaseous feed material that contains one or more hydrocarbons, the method comprising
- feeding a feed stream consisting of the gaseous feed material to a reactor, and feeding a stream consisting of hot oxidant containing oxygen to the reactor, and adding together in the reactor the hot oxidant stream containing oxygen with the feed stream of the gaseous feed material, to mix in the reactor under reaction conditions effective to partially oxidize one or more hydrocarbons in said feed material to produce a product stream that contains hydrogen and CO,
- while maintaining the ratio of the momentum of the oxidant stream relative to the momentum of the feed stream, when the oxidant stream is added to the feed stream, so that said ratio is less than the ratio of the momentum of the oxidant stream relative to the momentum of the feed stream at which, under otherwise identical reaction conditions including the temperature of the feed stream, the temperature of the oxidant stream, and the stoichiometric ratio, the soot content of the product stream is 5 gm/Nm3 higher than the soot content of the feed stream to which the oxidant stream is added.
An improved method of treating a gaseous feed material that contains one or more hydrocarbons, the method comprising
- feeding a feed stream consisting of the gaseous feed material to a reactor, and feeding a stream consisting of hot oxidant containing oxygen to the reactor, and adding together in the reactor the hot oxidant stream containing oxygen with the feed stream of the gaseous feed material, to mix in the reactor under reaction conditions effective to partially oxidize one or more hydrocarbons in said feed material to produce a product stream that contains hydrogen and CO,
- while maintaining the ratio of the momentum of the oxidant stream relative to the momentum of the feed stream, when the oxidant stream is added to the feed stream, so that the soot content of the product stream is less than 5 gm/Nm3 higher than the soot content of the feed stream.
An improved method of treating a gaseous feed material that contains one or more hydrocarbons, the method comprising
- feeding a feed stream consisting of the gaseous feed material to a reactor, and feeding a stream consisting of hot oxidant containing oxygen to the reactor, and adding together in the reactor the hot oxidant stream containing oxygen with the feed stream of the gaseous feed material, to mix in the reactor under reaction conditions effective to partially oxidize one or more hydrocarbons in said feed material to produce a product stream that contains hydrogen and CO,
- under reaction conditions, including the temperature of the feed stream, the temperature of the oxidant stream, and the stoichiometric ratio, under which if the partial oxidation reaction is practiced with a given ratio of the momentum of the oxidant stream relative to the momentum of the feed stream the soot content of the product stream would be 5 gm/Nm3 higher than the soot content of the feed stream,
- and carrying out the partial oxidation reaction with a ratio of the momentum of the oxidant stream relative to the momentum of the feed stream when the streams are added together that is less than the given ratio but under otherwise identical reaction conditions,
- wherein the soot content of the product stream is less than 5 gm/Nm3 higher than the soot content of the feed stream.
1 more element
Dependencies are inferred from the claim text.