Systems and methods for treatment of gas engine exhaust
AssigneeCeco Environmental IP Inc.
InventorsLars THEUNISSEN, Michiel MAKKEE
Life of this patent
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Abstract
An exhaust treatment system comprises a reactor chamber configured to be fluidly coupled to an exhaust outlet of an engine, a regeneration chamber adjacent the reactor chamber, a regeneration system fluidly coupled to the regeneration chamber that is configured to generate a flow of regeneration fluid in the regeneration chamber, a first catalyst block, and a second catalyst block. The first catalyst block and the second catalyst block are configured to oxidize unburnt hydrocarbons in an exhaust stream from the engine. The treatment system can also include a combustible fluid injector for injecting a combustible fluid to raise the temperature of the first catalyst block and second catalyst block to a reaction temperature during use.
Claims21
An exhaust treatment system, comprising:
- a reactor chamber configured to be fluidly coupled to an exhaust outlet of an engine;
- a regeneration chamber adjacent the reactor chamber;
- a regeneration system fluidly coupled to the regeneration chamber that is configured to generate a flow of regeneration fluid in the regeneration chamber;
- a first catalyst block;
- a second catalyst block, wherein the first catalyst block and the second catalyst block are configured to oxidize unburnt hydrocarbons in an exhaust stream from the engine when positioned in the reactor chamber;
- a first conveyance assembly configured to move the first catalyst block between the reactor chamber and the regeneration chamber;
- and
- a second conveyance assembly configured to move the second catalyst block between the reactor chamber and the regeneration chamber.
(canceled)
A method, comprising:
- positioning a first catalyst block in a reactor chamber;
- flowing an exhaust from an engine through the reactor chamber such that unburnt hydrocarbon molecules in the exhaust are oxidized via the first catalyst block;
- transferring a second catalyst block from the regeneration chamber into the reactor chamber via a second conveyance assembly;
- transferring the first catalyst block from the reactor chamber into a regeneration chamber that is adjacent the reactor chamber via a first conveyance assembly;
- continuing to flow the exhaust from the engine through the reactor chamber such that the unburnt hydrocarbon molecules in the exhaust are oxidized via the second catalyst block;
- and
- regenerating the first catalyst block with a stream of regeneration fluid in the regeneration chamber to change an oxidation/reduction state of a catalytic material in the first catalyst block.
Dependencies are inferred from the claim text.