公开(公告)号：US06500221B2

公开(公告)日：2002-12-31

申请号：US09865609

申请日：2001-05-25

申请人： David J. Walker ,  Mikhail Maryamchik ,  Sundara M. Kavidass ,  Felix Belin ,  Kiplin C. Alexander ,  David E. James ,  David R. Gibbs ,  Donald L. Wietzke

发明人： David J. Walker ,  Mikhail Maryamchik ,  Sundara M. Kavidass ,  Felix Belin ,  Kiplin C. Alexander ,  David E. James ,  David R. Gibbs ,  Donald L. Wietzke

IPC分类号： B01D4508

CPC分类号： B01D45/08 ,  F22B31/0084 ,  F23C10/08

摘要： Apparatus for separating solids from flue gas in a circulating fluidized bed (CFB) boiler includes plural vertical, impact type particle separators made of cooling tubes located within the CFB in a plurality of staggered rows. One embodiment employs a plurality of stacked, slip fit elements having apertures which accept the cooling tubes. The slip fit elements cooperate with one another to form a collecting channel, typically U-shaped, which separates particles from flue gases conveyed across the particle separators. Shiplap joints in between the individual slip fit elements prevent gas and solids from leaking therebetween and allow for thermal expansion. Alternatively, the impact type particle separators include cooling tubes connected to one another to form a unitary structure. Pin studs welded to the cooling tubes and covered with a coating of refractory; ceramic tiles; metal or ceramic spray coatings; metal or ceramic castings; weld overlay; and/or shields provide erosion resistance.

摘要翻译： 用于在循环流化床（CFB）锅炉中从烟道气中分离固体的装置包括多个垂直的冲击型颗粒分离器，其由位于CFB内的多个交错排中的冷却管制成。 一个实施例采用具有接收冷却管的孔的多个堆叠的滑动配合元件。 滑动配合元件彼此配合以形成通常为U形的收集通道，其将颗粒与通过颗粒分离器输送的烟道气分离。 单个滑动配合元件之间的刮板接头可防止气体和固体在其间泄漏，并允许热膨胀。 或者，冲击式颗粒分离器包括彼此连接以形成一体结构的冷却管。 销螺栓焊接到冷却管并覆盖有耐火材料涂层; 瓷砖; 金属或陶瓷喷涂; 金属或陶瓷铸件; 焊缝覆盖层; 和/或防护罩提供抗侵蚀性。

公开(公告)号：US06532905B2

公开(公告)日：2003-03-18

申请号：US09906993

申请日：2001-07-17

申请人： Felix Belin ,  Mikhail Maryamchik ,  Sundara M. Kavidass ,  David J. Walker ,  Donald L. Wietzke

发明人： Felix Belin ,  Mikhail Maryamchik ,  Sundara M. Kavidass ,  David J. Walker ,  Donald L. Wietzke

IPC分类号： F28D1300

CPC分类号： F22B31/0084 ,  F22B31/0023

摘要： A circulating fluidized bed (CFB) boiler has one or more bubbling fluidized bed enclosures containing heating surfaces and located within a lower portion of the CFB boiler to provide a compact, efficient design with a reduced footprint area. The heating surfaces are provided within the bubbling fluidized bed located above a CFB grid and/or in a moving packed bed below the CFB grid inside the lower portion of the CFB boiler. Solids in the bubbling fluidized bed are maintained in a slow bubbling fluidized bed state by separately controlled fluidization gas supplies. Separately controlled fluidization gas is used to control bed level in the bubbling fluidized beds or to control the throughput of solids through the bubbling fluidized beds. Solids ejected from the bubbling fluidized beds can be returned directly into the surrounding CFB environment of the CFB boiler, or purged from the system for disposal or recycle back into the CFB. Solids which are recycled back to the CFB have less heat and can be used to control the temperature of the fast moving bed in the CFB.

摘要翻译： 循环流化床（CFB）锅炉具有一个或多个含有加热表面并且位于CFB锅炉的下部内的起泡流化床外壳，以提供紧凑，有效的设计，减少占地面积。 加热表面设置在位于CFB格栅上方的起泡流化床内和/或在CFB锅炉下部的CFB格栅下方的移动填充床中。 鼓泡流化床中的固体通过单独控制的流化气体供应维持在缓慢的起泡流化床状态。 单独控制的流化气体用于控制鼓泡流化床中的床层或控制通过鼓泡流化床的固体的通过量。 从起泡流化床喷出的固体可以直接返回到CFB锅炉的周围CFB环境中，或者从系统中清除，以便将其回收回CFB。 循环回CFB的固体具有较少的热量，可用于控制CFB中快速移动床的温度。