公开(公告)号：US20140216364A1

公开(公告)日：2014-08-07

申请号：US13759151

申请日：2013-02-05

Applicant: Alstom Technology Ltd.

Inventor： Xinsheng Lou ,  Jundong Zhang ,  Shu Zhang ,  Greg N. Liljedahl ,  Bruce W. Wilhelm

IPC: F22G5/02 ,  F23L7/00 ,  F22G5/20

CPC classification number: F22G5/02 ,  F22B35/002 ,  F22B35/18 ,  F22G5/20 ,  F23L7/007 ,  Y02E20/344

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.

Abstract translation: 用于调节测量的再热出口蒸汽温度（“RPV”）以近似锅炉中的再热出口蒸汽温度设定值（“RSP”）的方法和系统。 将RPV与RSP进行比较。 如果RPV小于RSP，并且燃料喷嘴倾斜位置（“TILTPV”）低于燃料喷嘴倾斜（“TILTHIGH”）的上限，则TILTPV增加，而二次烟道气的流量 再循环（“SFGRPV”）保持恒定。 如果RPV小于RSP，并且TILTPV处于TILTHIGH，则SFGRPV增加。 如果RPV大于RSP，并且SFGRPV大于SFGR（“SFGRLOW”）的流量的下限，则SFGRPV降低，而TILTPV保持恒定。 如果RPV大于RSP，并且SFGRPV处于SFGRLOW，则TILTPV减小。