公开(公告)号：US07850104B2

公开(公告)日：2010-12-14

申请号：US11726149

申请日：2007-03-21

Applicant: Vladimir Havlena ,  Jaroslav Pekar ,  Daniel Pachner

Inventor： Vladimir Havlena ,  Jaroslav Pekar ,  Daniel Pachner

IPC: B02C4/32 ,  B02C7/14

CPC classification number: F23K1/00 ,  B02C15/007 ,  B02C25/00 ,  F23K2201/1006 ,  F23K2201/103

Abstract: The subject matter herein relates to coal mills and, more particularly, inferential pulverized fuel flow sensing and manipulation within a coal mill. Various embodiments provide systems, methods, and software to manipulate a primary air flow rate and a coal feed rate into a coal mill to produce a target pulverized fuel flow. Some embodiments include sensing a differential pressure between two or more locations within a coal mill to estimate a recirculated load of coal at one or more stages within the coal mill.

Abstract translation: 本发明的主题涉及煤粉磨机，更具体地说，涉及一种煤磨机内的推进粉煤燃料流量检测和操作。 各种实施例提供了系统，方法和软件，以操纵初级空气流量和进入煤碾磨机的煤进料速率以产生目标粉化燃料流。 一些实施例包括感测在煤磨机内的两个或更多个位置之间的压差以估计在煤磨机内的一个或多个阶段的煤的再循环负载。

公开(公告)号：US07849805B2

公开(公告)日：2010-12-14

申请号：US12012559

申请日：2008-02-04

Applicant: Hellmuth Brüggemann ,  Frank Rauch ,  Hasthika Weerasinghe

Inventor： Hellmuth Brüggemann ,  Frank Rauch ,  Hasthika Weerasinghe

IPC: F23L13/00 ,  F23N3/02 ,  F23D1/00 ,  F23K1/00 ,  F23N3/00

CPC classification number: B02C23/04 ,  F23K3/02 ,  F23K2201/103

Abstract: A primary air system for a combustion plant provides a flow of primary air to at least one coal pulverizer, which emits pulverized coal in a downstream direction to a furnace. The primary air system includes a first primary air line for feeding hot primary air to the coal pulverizer and a second primary air line for admixing of cold primary air into the hot primary air line at a mixing location positioned upstream of the coal pulverizer. A control system shuts off the flow of primary air to the coal pulverizer, when the coal pulverizer is being repaired or serviced while the furnace is in operation. The control system includes a first flow control butterfly valve disposed in the first primary air line at a position upstream of the mixing location and a second flow control butterfly valve disposed in the second primary air line at a position upstream of the mixing location. A shut-off butterfly valve, disposed in the primary air line intermediate the mixing location and the coal pulverizer, includes a tandem wing supported at a cental location and movable between an open position and a closed position. The tandem wing has parallel, first and second wings forming a space therebetween. A pressure relief line provides fluid communication with the space between the first and second wings when the tandem wing is in the closed position. A pressure relief butterfly valve is disposed in the pressure relief line.

Abstract translation: 用于燃烧设备的一次空气系统向至少一台煤粉碎机提供一次空气流，该粉煤机沿炉下游方向排出煤粉。 主空气系统包括用于将热一次空气供给到煤粉碎机的第一主空气管线和用于将冷一次空气混合到位于煤粉碎机上游的混合位置的热一次空气管线的第二主空气管线。 当炉子运行时，当煤粉碎机正在修理或维修时，控制系统关闭一次空气流向煤粉碎机的流动。 该控制系统包括：在混合位置上游位置设置在第一一次空气管路中的第一流量控制蝶阀和位于混合位置上游位置处的第二一次空气管路中的第二流量控制蝶阀。 设置在混合位置中间的主空气管线和煤粉碎机中的截止蝶阀包括支撑在中心位置并可在打开位置和关闭位置之间移动的串联翼片。 串联翼具有平行的第一和第二翼，在它们之间形成一个空间。 当双绞翼处于关闭位置时，压力释放线提供与第一和第二翼之间的空间的流体连通。 减压蝶阀设置在减压阀中。

公开(公告)号：US20090308292A1

公开(公告)日：2009-12-17

申请号：US12514826

申请日：2007-11-06

Applicant: Toshiro Fujimori ,  Masato Tamura ,  Toshiyuki Suko ,  Toshihiko Yamada

Inventor： Toshiro Fujimori ,  Masato Tamura ,  Toshiyuki Suko ,  Toshihiko Yamada

IPC: F23N5/02 ,  F23D1/00

CPC classification number: F23L15/04 ,  F23K1/04 ,  F23K2201/103 ,  F23K2203/201 ,  F23N3/002 ,  F23N2021/08 ,  F23N2021/10 ,  Y02E20/348

Abstract: In a coal burning boiler apparatus, temperature of the pulverized coal to be fed to the boiler can be set depending on the property of the combustion coal, so that stable ignition and combustion can be made regardless of the property of the combustion coal fed.Provided are a coal burning boiler 1, a coal pulverizer 2 for pulverizing massive coal 6 into fine powder, a temperature sensor 18 for detecting temperature of the primary air 35 for entraining the pulverized coal to the coal burning boiler, regulators 9, 12, 13 and 14 for regulating the temperature of the primary air and a controller for controlling the primary air temperature regulators on the basis of detected result of the temperature sensor so as to make the primary air have a given temperature.

Abstract translation: 在燃煤锅炉装置中，可以根据燃煤的特性来设定供给到锅炉的粉煤的温度，能够进行稳定的点火和燃烧，而与供给的燃煤的性质无关。 本发明提供一种燃煤锅炉1，将大量煤6粉碎为细粉的煤粉碎机2，用于检测用于将煤粉夹入燃煤锅炉的一次空气35的温度的温度传感器18，调节器9,12,13 和14，用于调节一次空气的温度;以及控制器，其基于温度传感器的检测结果来控制一次空气温度调节器，以使一次空气具有给定的温度。

公开(公告)号：US20050150985A1

公开(公告)日：2005-07-14

申请号：US11033261

申请日：2005-01-12

Applicant: Edmond Soudron

Inventor： Edmond Soudron

IPC: B02C15/02 ,  F23K1/00 ,  B02C23/24

CPC classification number: F23K1/00 ,  F23K2201/103 ,  F23K2201/20

Abstract: The invention concerns a method of grinding combustible products by means of closed-circuit pendulum ring roller mills, comprising a top ring, serving as a support for the running track of the mill, and a base structure provided with a grinding sole plate, preventing the deposition of combustible particles in the air inlet circuit of the mill. The invention also concerns closed-circuit pendulum ring roller mills for implementing such a method.

Abstract translation: 本发明涉及一种通过闭路摆环辊磨机研磨可燃产品的方法，该方法包括用作磨机运行轨迹的支撑件的顶环，以及设置有研磨底板的基座结构， 可燃颗粒沉积在磨机的进气回路中。 本发明还涉及用于实现这种方法的闭路摆环辊磨机。

公开(公告)号：US20040079819A1

公开(公告)日：2004-04-29

申请号：US10280146

申请日：2002-10-25

Applicant: ALSTOM (Switzerland) Ltd.

Inventor： Michael M. Chen ,  Jianrong Chen ,  David M. Podmokly ,  David C. Wasz

IPC: B02C023/24

CPC classification number: B02C23/02 ,  B65G53/4691 ,  F23K1/00 ,  F23K3/02 ,  F23K2201/1006 ,  F23K2201/103 ,  F23K2203/201 ,  F23K2900/03001

Abstract: An airlock-feeder for a coal pulverizing system which includes a raw coal bunker, a pulverizer, and a vertically extending coal duct forming a raw coal flow path from the raw coal bunker to the pulverizer. The airlock-feeder comprises upper, middle and lower, vertically separated valves disposed in the raw coal flow path. Each valve has a seal member, a disc pivotally mounted at a centerline, and a pneumatic actuator. At least one or two of the valves are closed at any given time thereby providing a positive air-tight seal.

Abstract translation: 一种用于煤粉碎系统的气闸给料机，其包括原煤仓，粉碎机和形成从原煤仓到粉碎机的原煤流通道的垂直延伸煤通道。 气闸装置包括设置在原煤流路中的上，中，下垂直分离的阀。 每个阀都有一个密封件，一个可枢转地安装在一个中心线上的圆盘，一个气动执行器。 至少一个或两个阀在任何给定时间都被关闭，从而提供正气密密封。

公开(公告)号：US06155183A

公开(公告)日：2000-12-05

申请号：US358301

申请日：1999-07-21

Applicant: Scott A. Vierstra ,  John J. Letcavits

Inventor： Scott A. Vierstra ,  John J. Letcavits

IPC: F23C7/00 ,  F23K3/02 ,  F23M9/02 ,  F23B5/02 ,  F23B7/00 ,  F23N5/18

CPC classification number: F23K3/02 ,  F23C7/00 ,  F23M9/02 ,  F23C2201/20 ,  F23D2205/00 ,  F23K2201/103 ,  F23K2900/01041

Abstract: A method and apparatus retrofitted to a multiple-intertube pulverized-coal burner to reduce NO.sub.x emissions of roof fired boilers. An internal two stage process controls the amount of secondary air which flows to the burner. The first stage includes a secondary air damper and air flow station to regulate the amount of air which flows into a windbox of the burner. The second stage includes an outlet formed in the hot primary air duct, an air plenum which communicates therewith, and a plurality of interjectory air ports which correspond with the burners in number and position along a front wall of the boiler and which communicate with the air plenum. The interjectory air ports inject interjectory air into a combustion chamber of the boiler at a substantially 90 degree angle to the direction of a plurality of burner tips of each burner and supplies the balance of the required theoretical combustion air needed to complete combustion of the fuel. A plurality of probes measure the amount of primary air, secondary air and interjectory air and signal a command loop circuit to adjust the secondary air dampers and interjectory air ports accordingly. The burner tips extend into the central core of each windbox and mixes with the incoming secondary air to provide for the fuel rich mixture.

Abstract translation: 改造为多管间粉煤燃烧器以减少屋顶燃烧锅炉的NOx排放的方法和装置。 内部两级过程控制流入燃烧器的二次空气量。 第一级包括二次空气阻尼器和空气流动站，以调节流入燃烧器的风箱中的空气量。 第二级包括形成在热的主空气管道中的出口，与其连通的空气通风室，以及沿着锅炉前壁的数量和位置对应的燃烧器的多个相互连接的空气端口，并与空气连通 全会。 间隔空气端口将空间空气以与每个燃烧器的多个燃烧器尖端的方向成大致90度角的方式喷射到锅炉的燃烧室中，并提供燃料完全燃烧所需的理论燃烧空气的平衡。 多个探头测量一次空气，二次空气和空中空气的量，并且发出一个命令循环电路，以相应地调节二次空气阻尼器和插入空气端口。 燃烧器尖端延伸到每个风箱的中心芯中，并与进入的二次空气混合以提供富燃料混合物。

公开(公告)号：US5771823A

公开(公告)日：1998-06-30

申请号：US594855

申请日：1996-01-31

Applicant: Scott A. Vierstra ,  John J. Letcavits

Inventor： Scott A. Vierstra ,  John J. Letcavits

IPC: F23C7/00 ,  F23K3/02 ,  F23M9/02 ,  F23D1/00 ,  F23J3/00

CPC classification number: F23K3/02 ,  F23C7/00 ,  F23M9/02 ,  F23C2201/20 ,  F23D2205/00 ,  F23K2201/103 ,  F23K2900/01041

Abstract: A method and apparatus retrofitted to a multiple-intertube pulverized-coal burner to reduce NO.sub.x emissions of roof fired boilers. An internal two stage process controls the amount of secondary air which flows to the burner. The first stage includes a secondary air damper and air flow station to regulate the amount of air which flows into a windbox of the burner. A baffle plate assembly which includes a plurality of baffle plates further limits the amount of air which flows to the core of the burner for combustion of the fuel. The baffle plates create a pressure drop within the windbox which forces or diverts a quantity of air to the periphery of the burner. The second stage includes an outlet formed in the hot primary air duct, an air plenum which communicates therewith, and a plurality of interjectory air ports which correspond with the burners in number and position along a front wall of the boiler and which communicate with the air plenum. The interjectory air ports inject interjectory air into a combustion chamber of the boiler at a substantially 90 degree angle to the direction of a plurality of burner tips of each burner and supplies the balance of the required theoretical combustion air needed to complete combustion of the fuel. A plurality of probes measure the amount of primary air, secondary air and interjectory air and signal a command loop circuit to adjust the secondary air dampers and interjectory air ports accordingly.

Abstract translation: 改造为多管间粉煤燃烧器以减少屋顶燃烧锅炉的NOx排放的方法和装置。 内部两级过程控制流入燃烧器的二次空气量。 第一级包括二次空气阻尼器和空气流动站，以调节流入燃烧器的风箱中的空气量。 包括多个挡板的挡板组件进一步限制了流入燃烧器芯的空气量，用于燃烧燃料。 挡板在风箱内形成一个压力降，它将一定数量的空气推到燃烧器的外围。 第二级包括形成在热的主空气管道中的出口，与其连通的空气通风室，以及沿着锅炉前壁的数量和位置对应的燃烧器的多个相互连接的空气端口，并与空气连通 全会。 间隔空气端口将空间空气以与每个燃烧器的多个燃烧器尖端的方向成大致90度角的方式喷射到锅炉的燃烧室中，并提供燃料完全燃烧所需的理论燃烧空气的平衡。 多个探头测量一次空气，二次空气和空中空气的量，并且发出一个命令循环电路，以相应地调节二次空气阻尼器和插入空气端口。