公开(公告)号：US5476071A

公开(公告)日：1995-12-19

申请号：US286321

申请日：1994-08-04

申请人： Akio Nishiyama ,  Masataka Ogasawara ,  Kenji Higashikawa ,  Kimihiro Nonaka ,  Taro Sakata

发明人： Akio Nishiyama ,  Masataka Ogasawara ,  Kenji Higashikawa ,  Kimihiro Nonaka ,  Taro Sakata

IPC分类号： F01K23/06 ,  F22B1/00

CPC分类号： F01K23/062

摘要： In a pressurized fluidized bed boiler, furnace means is divided into at least two separate furnaces: a furnace with an evaporator and a superheater disposed therethrough, and a furnace with the superheater and a reheater disposed therethrough. The furnaces are accommodated in separate pressure vessels, respectively. Air is supplied into the pressure vessels through air pipes connected to the pressure vessels, where it is used for pressurizing the pressure vessels, and then supplied into the furnaces through their lower portions, where it is used as a combustion air. An oxygen concentration meter is mounted in an exhaust gas pipe in an outlet of the furnace, and an air flow rate adjusting valve 3 is mounted outside each of the pressure vessels. Thus, a more precise control of air-fuel ratio can be performed independently for every furnaces by controlling the air flow rate adjusting valves on the basis of at least one of an oxygen concentration signal from the oxygen concentration meter and a fuel supply amount signal from a fuel supply pump motor.

摘要翻译： 在加压流化床锅炉中，炉装置被分成至少两个独立的炉：具有蒸发器的炉和通过其设置的过热器，以及具有过热器和通过其设置的再热器的炉。 炉子分别容纳在单独的压力容器中。 通过连接到压力容器的空气管道将空气供应到压力容器中，用于对压力容器加压，然后通过其下部供应到炉中，在那里用作燃烧空气。 氧浓度计安装在炉的出口的排气管中，空气流量调节阀3安装在每个压力容器的外部。 因此，可以通过基于来自氧浓度计的氧浓度信号和来自氧浓度计的燃料供给量信号中的至少一个来控​​制空气流量调节阀，对于每个炉子可以独立地执行对空燃比的更精确的控制 燃油供给泵马达。