Method and apparatus for reheat steam temperature control of oxy-fired boilers
Abstract
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.
- Inventors:
- Issue Date:
- Research Org.:
- General Electric Technology GmbH, Baden (Switzerland)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1805492
- Patent Number(s):
- 10914467
- Application Number:
- 13/759,151
- Assignee:
- General Electric Company (Baden, CH)
- Patent Classifications (CPCs):
-
F - MECHANICAL ENGINEERING F22 - STEAM GENERATION F22B - METHODS OF STEAM GENERATION
F - MECHANICAL ENGINEERING F22 - STEAM GENERATION F22G - SUPERHEATING OF STEAM
- DOE Contract Number:
- NT0005290
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 02/05/2013
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Lou, Xinsheng, Zhang, Jundong, Zhang, Shu, Liljedahl, Greg N., and Wilhelm, Bruce W. Method and apparatus for reheat steam temperature control of oxy-fired boilers. United States: N. p., 2021.
Web.
Lou, Xinsheng, Zhang, Jundong, Zhang, Shu, Liljedahl, Greg N., & Wilhelm, Bruce W. Method and apparatus for reheat steam temperature control of oxy-fired boilers. United States.
Lou, Xinsheng, Zhang, Jundong, Zhang, Shu, Liljedahl, Greg N., and Wilhelm, Bruce W. Tue .
"Method and apparatus for reheat steam temperature control of oxy-fired boilers". United States. https://www.osti.gov/servlets/purl/1805492.
@article{osti_1805492,
title = {Method and apparatus for reheat steam temperature control of oxy-fired boilers},
author = {Lou, Xinsheng and Zhang, Jundong and Zhang, Shu and Liljedahl, Greg N. and Wilhelm, Bruce W.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 09 00:00:00 EST 2021},
month = {Tue Feb 09 00:00:00 EST 2021}
}
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