发明名称 |
ECONOMIZER WATER RECIRCULATION SYSTEM FOR BOILER EXIT GAS TEMPERATURE CONTROL IN SUPERCRITICAL PRESSURE BOILERS |
摘要 |
<p>A fluid recirculation system [30] includes an arrangement of a flow control valve [50] located to receive a flow of fluid from an inlet. The system [30] further comprises an economizer inlet mixing device [54] located to receive the flow of hotter fluid from the arrangement of the flow control valve [50] and from a cooler feedwater stream. An economizer inlet mixing device [54] located upstream of an economizer [22] in a supercritical pressure boiler [10] includes a sparger assembly through which a flow of fluid from the waterwall [14] outlet is received, an inlet through which a flow of fluid from a feed stream is received, and a wave breaker assembly [84] through which an outlet stream from the economizer inlet mixing device [54] is directed. A method of increasing and controlling the temperature of a flue gas exiting an economizer [22] in a supercritical pressure boiler [10] includes receiving at least a flow of fluid from a fluid stream [37] from a furnace [12] waterwall [14] outlet, combining at least a portion of the received flow of fluid [37] with a feedwater stream, and directing the combined received flow of fluid and feedwater stream to an economizer [22] inlet to decrease the economizer [22] heat absorption.</p> |
申请公布号 |
WO2011084243(A2) |
申请公布日期 |
2011.07.14 |
申请号 |
WO2010US57185 |
申请日期 |
2010.11.18 |
申请人 |
ALSTOM TECHNOLOGY LTD;WALSH, BERNARD H. |
发明人 |
WALSH, BERNARD H.;HARGROVE, MICHAEL J.;NAVITSKY, GARY J.;WAILGUM, JASON J. |
分类号 |
F22B37/00 |
主分类号 |
F22B37/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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