Tunable AIG for Improved SCR Performance
First Claim
1. A system for controlling a reagent flow to an exhaust of a lean burn combustion source equipped with a catalyst, comprising:
- a plurality of decomposition ducts, wherein each decomposition duct is connected to at least one injection lance of a reagent injection grid and supplies reagent and hot carrier gas to said at least one injection lance; and
at least one metering valve in communication with each of said plurality of decomposition ducts, wherein said at least one metering valve controls reagent injection rate to said at least one injection lance of said injection grid.
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Accused Products
Abstract
A system for controlling reagent flow to an exhaust of a lean burn combustion source includes a plurality of decomposition ducts each being connected to at least one injection lance of a reagent injection grid and supplying reagent and hot carrier gas to the injection lance, and at least one metering valve in communication with each of the plurality of decomposition ducts that controls reagent injection rate to the injection lance. A method of controlling a reagent flow to an exhaust of a lean burn combustion source includes providing a reagent injection grid having at least one injection lance, supplying the reagent and hot carrier gas to the reagent injection grid from a plurality of decomposition ducts coupled to the injection grid, and controlling reagent injection rate to the injection grid via at least one metering valve in communication with each of the plurality of decomposition ducts.
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Citations
41 Claims
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1. A system for controlling a reagent flow to an exhaust of a lean burn combustion source equipped with a catalyst, comprising:
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a plurality of decomposition ducts, wherein each decomposition duct is connected to at least one injection lance of a reagent injection grid and supplies reagent and hot carrier gas to said at least one injection lance; and at least one metering valve in communication with each of said plurality of decomposition ducts, wherein said at least one metering valve controls reagent injection rate to said at least one injection lance of said injection grid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A system for controlling a reagent flow to an exhaust of a lean burn combustion source equipped with a catalyst, comprising:
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a reagent injection grid; at least one decomposition duct coupled to said reagent injection grid, wherein the at least one decomposition duct supplies reagent and hot carrier gas to said reagent grid; and a plurality of metering valves in communication with said at least one decomposition duct, wherein said plurality of metering valves control reagent injection rate to said injection grid.
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27. A method of controlling a reagent flow to an exhaust of a lean burn combustion source equipped with a catalyst, comprising the steps of:
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providing a reagent injection grid comprising at least one injection lance; supplying the reagent and hot carrier gas to said reagent injection grid from a plurality of decomposition ducts coupled to said reagent injection grid; and controlling reagent injection rate to said at least one injection lance of said injection grid via at least one metering valve in communication with said at least one decomposition duct. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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Specification