公开(公告)号：US09989244B2

公开(公告)日：2018-06-05

申请号：US15057345

申请日：2016-03-01

申请人： The Babcock & Wilcox Company

发明人： Mikhail Maryamchik ,  Michael J Szmania ,  Donald L Wietzke

IPC分类号： F22B37/44 ,  F22D11/00 ,  F22D5/26

CPC分类号： F22D11/003 ,  F22B31/0061 ,  F22B37/44 ,  F22D5/26

摘要： A system can quickly cool and de-pressurize a boiler arrangement under non-normal operating conditions such as loss of plant power. A discharge system injects into the furnace a combined stream of steam from a steam discharge system and ambient air, thereby both cooling components of the boiler arrangement and reducing pressure in the steam/water circuit. This reduces or eliminates the additional cost associated with providing extra capacity in a steam drum and/or an independently powered boiler water pump. The system is particularly useful for quickly cooling the U-beams of a circulating fluidized bed boiler during a black plant condition.