Method and apparatus for reheat steam temperature control of oxy-fired boilers

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United States of America Patent

PATENT NO 10914467
APP PUB NO 20140216364A1
SERIAL NO

13759151

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Abstract

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Method and system for adjusting a measured reheat outlet steam temperature (“RPV”) to approximate a reheat outlet steam temperature setpoint (“RSP”) in a boiler. An RPV is compared to an RSP. If the RPV is less than the RSP and a position of a fuel nozzle tilt (“TILTPV”) is below a high limit of the fuel nozzle tilt (“TILTHIGH”), the TILTPV is increased while a flow rate of a secondary flue gas recirculation (“SFGRPV”) is kept constant. If the RPV is less than the RSP and the TILTPV is at the TILTHIGH, the SFGRPV is increased. If the RPV is greater than the RSP and the SFGRPV is greater than a low limit of flow rate of the SFGR (“SFGRLOW”), the SFGRPV is decreased, while the TILTPV is kept constant. If the RPV is greater than the RSP and the SFGRPV is at the SFGRLOW, the TILTPV is decreased.

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Patent Owner(s)

Patent OwnerAddress
GENERAL ELECTRIC TECHNOLOGY GMBHSWISS BADEN BADEN AARGAU

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Liljedahl, Greg N Tariffville, US 2 105
Lou, Xinsheng West Hartford, US 19 137
Wilhelm, Bruce W Enfield, US 7 69
Zhang, Jundong Bloomfield, US 10 46
Zhang, Shu Windsor Locks, US 90 617

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