公开(公告)号：US20120006238A1

公开(公告)日：2012-01-12

申请号：US13257584

申请日：2010-03-23

申请人： Changye Cheng ,  Jiaju Yang ,  Yi Li ,  Xingyuan Cui ,  Chaoqun Zhang ,  Zeru Gong ,  Guangquan Zhang ,  Yubin Zhang ,  Peng Liu

发明人： Changye Cheng ,  Jiaju Yang ,  Yi Li ,  Xingyuan Cui ,  Chaoqun Zhang ,  Zeru Gong ,  Guangquan Zhang ,  Yubin Zhang ,  Peng Liu

IPC分类号： F23D1/00 ,  F23Q3/00 ,  F23K3/02

CPC分类号： F23D1/00 ,  F23D2201/20 ,  F23K3/02

摘要： A pulverized coal concentrator for a pulverized coal burner, the concentrator is fixedly arranged inside the pulverized coal burner and comprises a front part (102) and a rear part (101), wherein the front part (1020 is designed as a bowl-shaped structure, for guiding and concentrating an air-pulverized coal flow, and the rear part (101) is designed as a cylinder-shaped structure, for maintaining a proper extension of the dense phase zone of the air pulverized coal flow. Also a pulverization coal burner is provided comprising the pulverized coal concentrator, in particular an internal combustion-type pulverized coal burner. The pulverized coal concentrator increases the adaptability of burner to coal quality, air velocity and pulverized coal density.

摘要翻译： 一种用于粉煤燃烧器的粉煤集中器，所述浓缩器固定地布置在所述粉煤燃烧器的内部，并且包括前部（102）和后部（101），其中所述前部（1020被设计为碗状结构 用于引导和浓缩空气粉煤流，并且后部（101）被设计为圆柱形结构，用于保持空气粉煤流的致密相的适当延伸，还有一种粉煤燃烧器 提供包括粉煤集中器，特别是内燃式粉煤燃烧器，粉煤浓缩器增加了燃烧器对煤质，风速和粉煤密度的适应性。

公开(公告)号：US20110033807A1

公开(公告)日：2011-02-10

申请号：US12921658

申请日：2008-06-18

申请人： Yupeng Wang ,  Hong Tang ,  Yuwang Miao ,  Tao Niu ,  Huaijun Ma ,  Peng Liu ,  Xinguang Wang ,  Xiaoyong Zhang ,  Yubin Zhang ,  Chaoqun Zhang ,  Yongsheng Dong ,  Xingyuan Cui

发明人： Yupeng Wang ,  Hong Tang ,  Yuwang Miao ,  Tao Niu ,  Huaijun Ma ,  Peng Liu ,  Xinguang Wang ,  Xiaoyong Zhang ,  Yubin Zhang ,  Chaoqun Zhang ,  Yongsheng Dong ,  Xingyuan Cui

IPC分类号： F23M3/04

CPC分类号： F23D1/00 ,  F23C5/08 ,  F23C6/04 ,  F23C2201/101 ,  F23C2900/03005 ,  F23D2201/10 ,  F23D2201/20

摘要： A method for decreasing nitrogen oxides of a pulverized coal boiler using burners (2) of internal combustion type comprising: designing or changing all or part of burners of the pulverized coal boiler as internal combustion type burners (2), in which the ignition sources may be plasma generators (1) or ignition devices such as small oil guns etc., and the power thereof can be adjusted for controlling the ignition intensity in the burners (2). The burners (2) are interiorly divided into several stage combustion chambers (5) and are provided with pulverized coal concentrators (4) which do deep fuel staging in the burners (2). During the operation of the boiler, the ignition sources always keep in a working state, and the pulverized coal in the burners (2) is ignited stage by stage and is burnt in advance; decreasing the secondary air amount in the primary combustion zone (22) so that the primary combustion zone (22) is in a relatively strong reducing atmosphere and a high temperature and oxygen-deficient condition for inhibiting the generation of NOx is created; and supplying the remaining air from the upper of furnace of the boiler in the form of over-fire air, so that a deep air staging is carried out in the total furnace. Thus, the NOx generation of combustion can be effectively controlled on the premise of not decreasing the boiler efficiency.

摘要翻译： 一种使用内燃式燃烧器（2）减少粉煤锅炉的氮氧化物的方法，包括：设计或改变作为内燃式燃烧器（2）的粉煤锅炉的全部或部分燃烧器，其中点火源可以 等离子体发生器（1）或小型油枪等点火装置，并且其功率可以被调节以控制燃烧器（2）中的点火强度。 燃烧器（2）内部分为几级燃烧室（5），并设置有在燃烧器（2）中进行深度燃料分级的粉煤集中器（4）。 在锅炉运行期间，点火源始终处于工作状态，燃烧器（2）中的粉煤逐级点火，并预先燃烧; 减少主燃烧区（22）中的二次空气量，使得第一燃烧区（22）处于相对较强的还原气氛中，并且产生用于抑制NOx的产生的高温和缺氧条件; 并且以过火空气的形式从锅炉的上部供应剩余的空气，使得在整个炉中进行深空气分级。 因此，在不降低锅炉效率的前提下，能够有效地控制NOx的产生。

公开(公告)号：US10364981B2

公开(公告)日：2019-07-30

申请号：US12921658

申请日：2008-06-18

申请人： Yupeng Wang ,  Hong Tang ,  Yuwang Miao ,  Tao Niu ,  Huaijun Ma ,  Peng Liu ,  Xinguang Wang ,  Xiaoyong Zhang ,  Yubin Zhang ,  Chaoqun Zhang ,  Yongsheng Dong ,  Xingyuan Cui

发明人： Yupeng Wang ,  Hong Tang ,  Yuwang Miao ,  Tao Niu ,  Huaijun Ma ,  Peng Liu ,  Xinguang Wang ,  Xiaoyong Zhang ,  Yubin Zhang ,  Chaoqun Zhang ,  Yongsheng Dong ,  Xingyuan Cui

IPC分类号： F23D1/00 ,  F23C5/08 ,  F23C6/04

摘要： A method for decreasing nitrogen oxides of a pulverized coal boiler using burners of internal combustion type including during the operation of the boiler, ignition sources in the burners of internal combustion type mounted on side walls of the boiler are always in a working state, and igniting the pulverized coal in the burners in advance; decreasing secondary air amount in a primary combustion zone of the boiler so that the primary combustion zone is in a relatively strong reducing atmosphere and an oxygen-deficient condition for inhibiting generation of NOx is created; and supplying remaining air from an upper part of a furnace of the boiler in a form of over-fire air, so that a deep air staging is carried out in the total furnace. Thus, the NOx generation of combustion can be effectively controlled on the premise of not decreasing efficiency of the boiler.

公开(公告)号：US08555795B2

公开(公告)日：2013-10-15

申请号：US13257584

申请日：2010-03-23

申请人： Changye Cheng ,  Jiaju Yang ,  Yi Li ,  Xingyuan Cui ,  Chaoqun Zhang ,  Zeru Gong ,  Guangquan Zhang ,  Yubin Zhang ,  Peng Liu

发明人： Changye Cheng ,  Jiaju Yang ,  Yi Li ,  Xingyuan Cui ,  Chaoqun Zhang ,  Zeru Gong ,  Guangquan Zhang ,  Yubin Zhang ,  Peng Liu

IPC分类号： F23D1/00 ,  F23K3/02

CPC分类号： F23D1/00 ,  F23D2201/20 ,  F23K3/02

摘要： A pulverized coal concentrator for a pulverized coal burner, the concentrator is fixedly arranged inside the pulverized coal burner and comprises a front part (102) and a rear part (101), wherein the front part (1020 is designed as a bowl-shaped structure, for guiding and concentrating an air-pulverized coal flow, and the rear part (101) is designed as a cylinder-shaped structure, for maintaining a proper extension of the dense phase zone of the air pulverized coal flow. Also a pulverization coal burner is provided comprising the pulverized coal concentrator, in particular an internal combustion-type pulverized coal burner. The pulverized coal concentrator increases the adaptability of burner to coal quality, air velocity and pulverized coal density.

摘要翻译： 一种用于粉煤燃烧器的粉煤集中器，所述浓缩器固定地布置在所述粉煤燃烧器的内部，并且包括前部（102）和后部（101），其中所述前部（1020被设计为碗状结构 用于引导和浓缩空气粉煤流，并且后部（101）被设计为圆柱形结构，用于保持空气粉煤流的致密相的适当延伸，还有一种粉煤燃烧器 提供包括粉煤集中器，特别是内燃式粉煤燃烧器，粉煤浓缩器增加了燃烧器对煤质，风速和粉煤密度的适应性。