公开(公告)号：EP2426411A1

公开(公告)日：2012-03-07

申请号：EP09156249.6

申请日：2009-03-26

申请人： Babcock & Wilcox Power Generation Group, Inc.

发明人： Monacelli, John E ,  Hicks, Timothy E ,  Osborne, Steven I ,  Hiner, Larry A

IPC分类号： F22B33/14 ,  F22B33/10

CPC分类号： F22B33/10 ,  F22B33/14 ,  Y02P60/831

摘要： An enhanced steam cycle utilizing a dual pressure recovery boiler with reheat allows a large increase in electrical generation with various turbine cycles while overcoming traditional lower furnace material limitations. A dual pressure designed recovery boiler is provided with a lower furnace (310) and an upper furnace (310'). The lower furnace (310) is operated at a lower temperature to precent or reduce corrosion of the lower furnace wall tubes caused by the reducing environment. The lower furnace can be either a low pressure natural circulation steam generating (drum) system or economizer. Unlike the lower furnace, the upper furnace (310') is not exposed to a reducing environment and is therefore not as susceptible to severe corrosion rates. The upper furnace is operated at higher temperatures and pressures which permit implementation of higher efficiency reheat steam cycles. The upper furnace thus operates as a high pressure natural circulation steam generating (drum) system, or as a once-through supercritical steam generating system. The dual pressure recovery boiler can thus be coupled to a variety of condesing, non-condensing or a combination of condensing and non-condensing turbine to provide a large increase in electrical generation.

摘要翻译： 增强的蒸汽循环利用具有再热的双压力回收锅炉允许在发电的大量增加与各种涡轮循环，同时克服传统下部炉材料的限制。 一种双压力设计回收锅炉中设置有下炉（310），并在上部炉（310“）。 在下炉（310）在较低温度下，以precent被操作或减少由还原环境引起的下炉壁管的腐蚀。 下炉可以是一个低压自然循环蒸汽生成（滚筒）系统或省煤器。 不同于下部炉，炉上部（310“）不暴露于还原环境，并且不容易受到严重THEREFORE腐蚀速率。 上部炉是在较高温度和压力，其允许实现更高效率的再热蒸汽循环的操作。 上部炉THUS操作为高压自然循环蒸汽生成（滚筒）系统，或者作为一次通过超临界蒸汽发生系统，该双压力回收锅炉因此可以连接到多种冷凝的非冷凝或它们的组合 的冷凝和非冷凝涡轮，以提供在发电的大量增加。