公开(公告)号：US4403941B1

公开(公告)日：1988-07-26

申请号：US17582380

申请日：1980-08-05

IPC: F23C99/00 ,  F23C6/04

CPC classification number: F23C6/047 ,  F23C2201/101

公开(公告)号：US4511325A

公开(公告)日：1985-04-16

申请号：US446755

申请日：1982-12-03

Applicant: Temple S. Voorheis

Inventor： Temple S. Voorheis

IPC: F23C5/00 ,  F23C7/02 ,  F23N3/00

CPC classification number: F23C5/00 ,  F23C7/02 ,  F23C2201/101

Abstract: To minimize NO.sub.x emissions in an intermediate size industrial boiler furnace having two vertically spaced rows of burners, each upper burner has a central fuel nozzle and a main air opening adjacent to the nozzle and communicating with a wind box associated with the furnace. In addition, each upper burner has a plurality of air delivery ports through the wall surrounding said upper burner, such air delivery ports also communicating with the wind box. The air delivery ports can be of different sizes and shapes and can be at different angles with respect to the vertical plane of the wall through which the air delivery ports extend. Control of the air through the main air opening adjacent to the nozzle of each upper burner is achieved by one or more shiftable registers or dampers which operate to close the air flow from the wind box to the air opening. Each lower burner has the same construction as each upper burner except that the lower burner does not have the air delivery ports through the wall surrounding the nozzle and its adjacent main air opening. Typically, each lower burner is fired off-stoichiometrically with only about 70% theoretical air and each upper burner is fired with about 90% theoretical air, the make-up air for each upper burner coming through the air delivery ports arranged around it. The air delivery ports also provide the makeup air for the excess fuel through the lower burners. The air pressure of the air across the air delivery ports has a higher pressure than the air pressure across the main air openings adjacent to the fuel nozzles. This assures that the make-up air through the surrounding air delivery ports will penetrate deeply into the combustion chamber of the furnace.

Abstract translation: 为了最小化具有两个垂直间隔的燃烧器列的中等尺寸工业锅炉炉中的NOx排放，每个上部燃烧器具有中心燃料喷嘴和邻近喷嘴的主空气开口，并与与炉子相关联的风箱连通。 此外，每个上部燃烧器具有穿过围绕所述上部燃烧器的壁的多个空气输送口，这样的空气输送口也与风箱连通。 空气输送口可以具有不同的尺寸和形状，并且可以相对于空气输送口延伸穿过的壁的垂直平面成不同的角度。 通过与每个上部燃烧器的喷嘴相邻的主空气开口的空气的控制通过一个或多个可移位的寄存器或阻尼器实现，其可操作以关闭从风箱到空气开口的空气流。 每个下部燃烧器具有与每个上部燃烧器相同的结构，除了下部燃烧器不具有通过围绕喷嘴及其相邻主要空气开口的壁的空气输送口。 通常，每个下部燃烧器仅以约70％的理论空气发射化学计量，每个上部燃烧器用约90％的理论空气燃烧，每个上部燃烧器的补充空气通过布置在其周围的空气输送口。 空气输送口还通过下燃烧器为多余的燃料提供补充空气。 通过空气输送口的空气的空气压力比与燃料喷嘴相邻的主要空气开口的空气压力高。 这确保通过周围空气输送口的补充空气将深入到炉的燃烧室中。