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US 6,190,628 B1Granted
Method for injecting NOx inhibiting liquid reagent into the flue gas of a boiler in response to a sensed temperature
AssigneeDiamond Power International, Inc.
InventorH. Randy Carter
Life of this patent
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Abstract
A method and apparatus for optimizing the injecting of NOx inhibiting liquid reagent into the flue gas of a utility or industrial type boiler to reduce emissions of NOx including a temperature sensor for measuring the boiler flue gas temperature and a moveable conduit for injecting the NOx inhibiting reagent into the flue gas at a sensed predetermined temperature range.
Claims4
A method for injecting NOx inhibiting liquid reagent into a boiler having boiler gas flowing therein in a direction of flow, the boiler including an opening, the method comprising:
- mounting a conduit having a nozzle, the conduit being activable for injecting NOx inhibiting reagent, and mounting the conduit such that the conduit and nozzle are movable into the gas in the boiler through the opening and movable out of the gas and out of the opening;
- sensing a temperature of the gas in the boiler;
- when the temperature of the gas is sensed to be within a selected range, activating the conduit to insert the nozzle into the gas through the opening and activating the conduit to spray reagent through the nozzle into the gas;
- and
- when the temperature of the gas is sensed to be outside the selected range, activating the conduit to withdraw the nozzle from the gas and out of the opening, and deactivating the conduit so that no reagent is supplied through the conduit to the nozzle.
2 more elements
Dependencies are inferred from the claim text.