公开(公告)号：US20110253066A1

公开(公告)日：2011-10-20

申请号：US12736365

申请日：2010-06-13

Applicant: Zhengqi Li ,  Zhichno Chen ,  Ming Kuang ,  Rui Sun ,  Qunyi Zhu ,  Lingyan Zeng ,  Chunlong Liu ,  Shaozeng Sun ,  Shaohua Wu

Inventor： Zhengqi Li ,  Zhichno Chen ,  Ming Kuang ,  Rui Sun ,  Qunyi Zhu ,  Lingyan Zeng ,  Chunlong Liu ,  Shaozeng Sun ,  Shaohua Wu

IPC: F22B13/14 ,  F22B3/00

Abstract: A method for a flame boiler with multi-stage combustion with multi-ejection, includes the steps of ejecting inner and outer secondary air flows with speed of 35-65 m/s to guide a fuel-rich pulverized coal flow with speed of 10-20 m/s into a lower chamber to provide first and second combustion stages, ejecting lower secondary air flows with speed of 35-65 m/s into the lower chamber to further guide the pulverized coal so as to provide a third combustion stage. The system includes a lower chamber, an upper chamber, a combustion chamber, fuel-rich pulverized coal flow nozzles, fuel-lean pulverized coal flow nozzles respectively provided at the front and rear boiler arches, and lower secondary air nozzles provided at the front and rear water cooled walls. The combustion of the pulverized coal flow with W-shaped flowing path within the boiler is adapted to reduce NOx emission and minimize the content of combustible substance in ash.

Abstract translation: 具有多次喷射的多级燃烧的火焰锅炉的方法包括以35-65m / s的速度排出内部和外部二次空气流的步骤，以引导富含燃料的粉煤流以10- 20m / s进入下室以提供第一和第二燃烧阶段，将较低的二次空气流以35-65m / s的速度喷射到下腔室中，以进一步引导粉煤以提供第三燃烧级。 该系统包括分别设置在前后锅炉拱顶的下室，上室，燃烧室，富燃料粉煤流喷嘴，贫燃煤粉流道喷嘴，以及设在前面和后面的下部二次空气喷嘴 后水冷壁。 在锅炉内具有W形流动路径的粉煤流的燃烧适于减少NOx排放并使灰分中的可燃物质的含量最小化。

公开(公告)号：US08479668B2

公开(公告)日：2013-07-09

申请号：US12227473

申请日：2007-07-18

Applicant: Zhengqi Li ,  Zhichao Chen ,  Rui Sun ,  Shaozeng Sun ,  Shaohua Wu ,  Ming Qin ,  Hui Liu ,  Yunkun Qin

Inventor： Zhengqi Li ,  Zhichao Chen ,  Rui Sun ,  Shaozeng Sun ,  Shaohua Wu ,  Ming Qin ,  Hui Liu ,  Yunkun Qin

IPC: F23D1/00 ,  F23K3/02

CPC classification number: F23D1/00 ,  F23D1/02 ,  F23D2201/10 ,  F23D2201/20

Abstract: A burner includes a primary air-coal mixture duct coaxially extended through a secondary air wind box, a pulverized coal separator supported within the primary air-coal mixture duct, a secondary air duct including an inner secondary air duct and an outer secondary air duct coaxially formed around the primary air-coal mixture duct, a primary air-coal mixture conical outlet coupled with the outlet of the primary air-coal mixture duct, and inner secondary air and outer conical outlets coupled with the outlets of the inner secondary air and outer secondary air ducts respectively. The conical outlets are arranged to delay the mixing time of the primary air-coal mixture and secondary air flows through the primary air-coal mixture and secondary air ducts and to prolong the residence time in the center recirculation zone under the reduction ability so as to effectively reduce the formation of NOx.

Abstract translation: 燃烧器包括同轴延伸通过二次空气风箱的一次空气煤混合管，支撑在一次空气 - 煤混合管道内的粉煤分离器，同时包括内二次风道和外二次风道的二次风道 形成在一次空气煤混合物管道周围，一次空气 - 煤混合物锥形出口与一次空气 - 煤混合物管道的出口相连，以及内部二次空气和外部锥形出口，其与内部二次空气和外部 二次风管。 锥形出口布置成延迟一次空气 - 煤混合物的混合时间，并且二次空气流过一次空气 - 煤混合物和二次空气管道，并且在还原能力下延长在中心再循环区域的停留时间，从而 有效减少NOx的形成。

公开(公告)号：US20100018445A1

公开(公告)日：2010-01-28

申请号：US12227473

申请日：2007-07-18

Applicant: Zhenggi Li ,  Zhichao Chen ,  Rui Sun ,  Shaozeng Sun ,  Shaohua Wu ,  Ming Qin ,  Yunkun Qin

Inventor： Zhenggi Li ,  Zhichao Chen ,  Rui Sun ,  Shaozeng Sun ,  Shaohua Wu ,  Ming Qin ,  Yunkun Qin

IPC: F23D1/02

CPC classification number: F23D1/00 ,  F23D1/02 ,  F23D2201/10 ,  F23D2201/20

Abstract: A burner includes a primary air-coal mixture duct coaxially extended through a secondary air wind box, a pulverized coal separator supported within the primary air-coal mixture duct, a secondary air duct including an inner secondary air duct and an outer secondary air duct coaxially formed around the primary air-coal mixture duct, a primary air-coal mixture conical outlet coupled with the outlet of the primary air-coal mixture duct, and inner secondary air and outer conical outlets coupled with the outlets of the inner secondary air and outer secondary air ducts respectively. The conical outlets are arranged to delay the mixing time of the primary air-coal mixture and secondary air flows through the primary air-coal mixture and secondary air ducts and to prolong the residence time in the center recirculation zone under the reduction ability so as to effectively reduce the formation of NOx.

Abstract translation: 燃烧器包括同轴延伸通过二次空气风箱的一次空气煤混合管，支撑在一次空气 - 煤混合管道内的粉煤分离器，同时包括内二次风道和外二次风道的二次风道 形成在一次空气煤混合物管道周围，一次空气 - 煤混合物锥形出口与一次空气 - 煤混合物管道的出口相连，以及内部二次空气和外部锥形出口，其与内部二次空气和外部 二次风管。 锥形出口布置成延迟一次空气 - 煤混合物的混合时间，并且二次空气流过一次空气 - 煤混合物和二次空气管道，并且在还原能力下延长在中心再循环区域的停留时间，从而 有效减少NOx的形成。