公开(公告)号：EP1075627A1

公开(公告)日：2001-02-14

申请号：EP99920121.3

申请日：1999-04-28

申请人： ABB AIR PREHEATER, INC.

发明人： ANDERSON, David, K. ,  COUNTERMAN, Wayne S. ,  PALKES, Mark ,  PINNEKAMP, Friedrich ,  PORLE, Kjell, E., G. ,  RINI, Michael, J. ,  SEEBALD, James, D. ,  SRINIVASACHAR, Srivats ,  TOQAN, Majed

IPC分类号： F23L15/02 ,  F28D19/00 ,  F23J15/00 ,  F22D1/36

CPC分类号： F23J15/08 ,  F22D1/36 ,  F23J15/006 ,  F23J2217/102 ,  F23J2217/50 ,  F23L15/02 ,  Y02E20/348

摘要： The flue gas (22) temperature coming from an air preheater (14) to a particulate collection device such as an electrostatic precipitator (16) or fabric filter is reduced to improve the operation of the particulate collection device. This may be done by reducing the exit flue gas (22) temperature from the air preheater (14) or reducing the temperature after exiting. In one embodiment, air in excess of that needed for combustion is passed through the air preheater (14) with the heated excess air either being dumped (34) or used for a variety of purposes (30, 32) in the plant. A particular embodiment involves segmenting the air outlet side of a rotary regenerative air preheater (14) and withdrawing the excess air from the segment where the dust loading is the lowest. Further, additional cooling of the flue gas (22) can be provided by reducing the quantity of primary air that typically bypasses the air preheater (14) and then providing other ways to control the primary air temperature to the pulverizers. The flue gas (22) temperature may also be cooled after the air preheater (14) by heat exchange or spray cooling with water.

摘要翻译： 从空气预热器（14）到例如静电除尘器（16）或织物过滤器的微粒收集装置的烟气（22）温度降低，以改善微粒收集装置的操作。 这可以通过减少来自空气预热器（14）的出口烟气（22）温度或者在离开后降低温度来完成。 在一个实施例中，超过燃烧所需的空气通过空气预热器（14），加热的过量空气或者被倾倒（34）或者用于工厂中的各种目的（30,32）。 一个具体的实施例涉及分段旋转再生式空气预热器（14）的空气出口侧并从灰尘加载量最低的部分抽出过量空气。 此外，通过减少通常绕过空气预热器（14）的一次空气的量​​并且然后提供其他方式来控制粉碎机的一次空气温度，可以提供烟气（22）的附加冷却。 烟气（22）的温度也可以在空气预热器（14）之后通过与水交换或喷雾冷却而被冷却。

公开(公告)号：EP0990110A1

公开(公告)日：2000-04-05

申请号：EP98915382.0

申请日：1998-04-07

申请人： ABB AIR PREHEATER, INC.

发明人： COUNTERMAN, Wayne, S. ,  BROWN, Gary, F. ,  BRZYTWA, Tadek, C. ,  CHEN, Michael, M. ,  HARTING, Scott, F. ,  SEEBALD, James, D.

IPC分类号： F28D19/04 ,  B21D13/04

CPC分类号： F28D19/044 ,  B21D13/04 ,  Y10T29/49357 ,  Y10T29/49366

摘要： Heat transfer elements (34) for rotary regenerative heat exchangers are formed with spacing ridges or notches (42) having flow-disrupted indentations (46) in the peaks of the notches (42) formed at selected intervals to project into the flow channels (36, 38). These projections (46) interrupt the boundary layer and cause turbulence and mixing to enhance the heat transfer. Various methods of forming the indentations (46) are disclosed.