公开(公告)号：US09958153B2

公开(公告)日：2018-05-01

申请号：US13124989

申请日：2009-12-08

Applicant: Nobuo Suemitsu ,  Sadayuki Muto ,  Shinichi Toda ,  Minoru Igarashi

Inventor： Nobuo Suemitsu ,  Sadayuki Muto ,  Shinichi Toda ,  Minoru Igarashi

IPC: F22B37/10 ,  F23C6/04 ,  F23C5/08 ,  F23G5/16

CPC classification number: F23C6/04 ,  F23C5/08 ,  F23C6/045 ,  F23C2201/101 ,  F23G5/165

Abstract: In a low NOx boiler of the present invention, a high-temperature reductive combustion zone is provided to an upper portion of a rectangular combustion chamber, and a second-step combustion zone is provided to a middle stage of the combustion chamber. A wall provided below the second-step combustion zone is tapered to narrow the combustion chamber, with a taper angle of approximately 35° or so, relative to a vertical line. An ash discharge port is provided to a furnace bottom portion, and a gas outlet port communicated with a rear pass is provided to a lower side face of the second-step combustion zone. This rear pass is connected with a further post-treatment step, via a super-heater tube and an economizer.

公开(公告)号：US20180058687A1

公开(公告)日：2018-03-01

申请号：US15244243

申请日：2016-08-23

Applicant: General Electric Technology GmbH

Inventor： Todd D. Hellewell ,  Bryan Walter Mruk ,  Christopher David Siriani

IPC: F23D1/00 ,  F23D1/02 ,  F23L9/02

CPC classification number: F23D1/005 ,  F22B29/065 ,  F23C6/047 ,  F23C7/02 ,  F23C2201/101 ,  F23D1/02 ,  F23D2201/20 ,  F23L9/02

Abstract: The present application provides a tangentially fired boiler. The tangentially fired boiler may include a combustion chamber and an overfire air system positioned about the combustion chamber. The overfire air system may include a number of overfire air windboxes positioned in a horizontal orientation.

公开(公告)号：US09513001B2

公开(公告)日：2016-12-06

申请号：US14030442

申请日：2013-09-18

Applicant: ALSTOM Technology Ltd

Inventor： Xinsheng Lou ,  Jundong Zhang ,  Abhinaya Joshi ,  James A. McCombe ,  Armand A. Levasseur

IPC: F23N1/02 ,  F23K3/16 ,  F23B10/00 ,  F23L15/00 ,  F23L7/00 ,  F23C7/00 ,  F23C6/04 ,  F23N3/00 ,  F23N5/00 ,  F23C9/00

CPC classification number: F23L7/007 ,  F23C6/04 ,  F23C6/045 ,  F23C7/008 ,  F23C9/003 ,  F23C2201/101 ,  F23C2202/30 ,  F23C2900/06041 ,  F23L15/00 ,  F23L2900/07001 ,  F23L2900/07005 ,  F23L2900/07006 ,  F23L2900/07007 ,  F23N3/00 ,  F23N5/006 ,  F23N2021/08 ,  F23N2037/26 ,  Y02E20/322 ,  Y02E20/344 ,  Y02E20/348

Abstract: An oxy-combustion boiler unit is disclosed which includes a furnace for combusting fuel and for emitting flue gas resulting from combustion. The furnace has first, second and third combustion zones, and an air separation unit for separating oxygen gas from air and providing a first portion of the separated oxygen to a first oxidant flow, a second portion to a second oxidant flow, and a third portion of the separated oxygen gas to the first, second, and third zones of the furnace. A controller can cause the separated oxygen gas to be distributed so that the first and second oxygen flows have a desired oxygen content, and so that the first, second, and third zones of the furnace receive a desired amount of oxygen based on a combustion zone stoichiometry control.

Abstract translation: 公开了一种氧燃烧锅炉单元，其包括用于燃烧燃料和用于排放由燃烧产生的烟道气的炉。 该炉具有第一，第二和第三燃烧区，以及空气分离单元，用于从空气中分离氧气，并将分离的氧气的第一部分提供给第一氧化剂流，第二部分提供给第二氧化剂流，第三部分 的分离的氧气到炉的第一，第二和第三区域。 控制器可以使分离的氧气被分配，使得第一和第二氧气流具有期望的氧含量，并且使得炉的第一，第二和第三区域基于燃烧区域接收所需量的氧气 化学计量控制。

公开(公告)号：US20150090165A1

公开(公告)日：2015-04-02

申请号：US14563648

申请日：2014-12-08

Applicant: Power & Control Solutions, Inc.

Inventor： Christopher L. Abeyta

IPC: F23C1/10 ,  F23D1/00 ,  F23J7/00 ,  F23C1/12

CPC classification number: F23C1/10 ,  F01K5/02 ,  F23C1/12 ,  F23C6/047 ,  F23C7/00 ,  F23C2201/101 ,  F23J3/00 ,  F23J3/023 ,  F23J7/00 ,  F23J15/003 ,  F23L9/04

Abstract: This disclosure may relate generally to systems, devices, and methods for a injecting a compound through a sootblower, burner or other utility furnace hardware, such that the compound can be delivered to targeted areas on the inside of a utility furnace. In one embodiment, the compound is a chemical for improving environmental controls. In another embodiment, the compound is a fuel. In that embodiment, compound can facilitate retrofitting a burner to a dual fired utility furnace. In another embodiment, the compound is a chemical for removing slag from the furnace.

公开(公告)号：US20140216309A1

公开(公告)日：2014-08-07

申请号：US14246380

申请日：2014-04-07

Applicant: Babcock & Wilcox Power Generation Group, Inc.

Inventor： Mandar R. GADGIL ,  S. Behrooz GHORISHI ,  Donald P. TONN

IPC: F23J15/00 ,  F23J7/00

CPC classification number: F23J15/003 ,  B01D53/46 ,  B01D53/64 ,  B01D53/8631 ,  B01D53/8696 ,  B01D53/90 ,  B01D2251/108 ,  B01D2251/304 ,  B01D2251/306 ,  B01D2251/404 ,  B01D2251/60 ,  B01D2255/20738 ,  B01D2257/55 ,  B01D2257/602 ,  B01D2258/0283 ,  F23C2201/101 ,  F23J7/00 ,  F23J15/006 ,  F23J2215/20 ,  F23J2217/101 ,  F23J2217/102 ,  F23J2219/10 ,  F23J2219/40 ,  F23J2219/60 ,  F23K2201/505 ,  F23N5/003

Abstract: The present invention relates generally to the field of emission control equipment for boilers, heaters, kilns, or other flue gas-, or combustion gas-, generating devices (e.g., those located at power plants, processing plants, etc.) and, in particular to a new and useful method and apparatus for reducing or preventing the poisoning and/or contamination of an SCR catalyst. In another embodiment, the method and apparatus of the present invention is designed to protect the SCR catalyst. In still another embodiment, the present invention relates to a method and apparatus for increasing the service life and/or catalytic activity of an SCR catalyst while simultaneously controlling various emissions.

Abstract translation: 本发明一般涉及用于锅炉，加热器，窑炉或其它烟道气或燃烧气体的发生装置（例如位于发电厂，加工厂等的那些）的排放控制设备的领域，并且在 特别涉及用于减少或防止SCR催化剂的中毒和/或污染的新的有用的方法和装置。 在另一个实施例中，本发明的方法和装置被设计成保护SCR催化剂。 在另一个实施方案中，本发明涉及一种用于在同时控制各种排放物的同时增加SCR催化剂的使用寿命和/或催化活性的方法和装置。

公开(公告)号：US08691719B2

公开(公告)日：2014-04-08

申请号：US13117332

申请日：2011-05-27

Applicant: Mandar R. Gadgil ,  S. Behrooz Ghorishi

Inventor： Mandar R. Gadgil ,  S. Behrooz Ghorishi

IPC: B01J27/185 ,  F23J11/00 ,  F23J15/00 ,  C10L5/00 ,  B01J27/06 ,  C01G9/00 ,  C01G11/00 ,  C01G13/00 ,  C22B17/00 ,  C22B19/00 ,  C22B43/00

CPC classification number: F23J15/003 ,  B01D53/46 ,  B01D53/64 ,  B01D53/8631 ,  B01D53/8696 ,  B01D53/90 ,  B01D2251/108 ,  B01D2251/304 ,  B01D2251/306 ,  B01D2251/404 ,  B01D2251/60 ,  B01D2255/20738 ,  B01D2257/55 ,  B01D2257/602 ,  B01D2258/0283 ,  F23C2201/101 ,  F23J7/00 ,  F23J15/006 ,  F23J2215/20 ,  F23J2217/101 ,  F23J2217/102 ,  F23J2219/10 ,  F23J2219/40 ,  F23J2219/60 ,  F23K2201/505 ,  F23N5/003

Abstract: The present invention relates generally to the field of emission control equipment for boilers, heaters, kilns, or other flue gas-, or combustion gas-, generating devices (e.g., those located at power plants, processing plants, etc.) and, in particular to a new and useful method and apparatus for reducing or preventing the poisoning and/or contamination of an SCR catalyst. In another embodiment, the method and apparatus of the present invention is designed to protect the SCR catalyst. In still another embodiment, the present invention relates to a method and apparatus for increasing the service life and/or catalytic activity of an SCR catalyst while simultaneously controlling various emissions.

Abstract translation: 本发明一般涉及用于锅炉，加热器，窑炉或其它烟道气或燃烧气体的发生装置（例如位于发电厂，加工厂等的那些）的排放控制设备的领域，并且在 特别涉及用于减少或防止SCR催化剂的中毒和/或污染的新的有用的方法和装置。 在另一个实施例中，本发明的方法和装置被设计成保护SCR催化剂。 在另一个实施方案中，本发明涉及一种用于在同时控制各种排放物的同时增加SCR催化剂的使用寿命和/或催化活性的方法和装置。

公开(公告)号：US08573965B2

公开(公告)日：2013-11-05

申请号：US11946211

申请日：2007-11-28

Applicant: Reed Jacob Hendershot ,  Xianming Jimmy Li ,  Aleksandar Georgi Slavejkov

Inventor： Reed Jacob Hendershot ,  Xianming Jimmy Li ,  Aleksandar Georgi Slavejkov

IPC: F23D14/02

CPC classification number: C10G9/14 ,  C10G9/20 ,  C10G9/206 ,  F23C5/08 ,  F23C6/047 ,  F23C2201/101 ,  F23C2900/05081 ,  F23L2900/07007 ,  Y02E20/344

Abstract: A method of operating a pyrolysis heater for reduced emissions of NOx and carbon monoxide. One or more wall burners, typically premix burners, are operated with more excess oxidant gas than one or more of the floor or hearth burners, which are typically non-premix burners. The invention takes advantage of different NOx emissions characteristics from different types of burners.

Abstract translation: 一种操作热解加热器以减少NOx和一氧化碳排放的方法。 一个或多个壁式燃烧器（通常为预混燃烧器）以比一般或非燃烧式燃烧器的地板或炉底燃烧器中的一种或多种更多的氧化剂气体进行操作。 本发明利用不同类型燃烧器的不同NOx排放特性。

公开(公告)号：US20130156667A1

公开(公告)日：2013-06-20

申请号：US13769686

申请日：2013-02-18

Applicant: BABCOCK & WILCOX POWER GENERATION GROUP, INC.

Inventor： Mandar R. Gadgil ,  Bryan J. Jankura ,  Jeb W. Gayheart

IPC: B01D53/46 ,  B01D53/64

CPC classification number: B01D53/46 ,  B01D53/501 ,  B01D53/508 ,  B01D53/64 ,  B01D53/8631 ,  B01D53/869 ,  B01D53/8696 ,  B01D2251/304 ,  B01D2251/306 ,  B01D2251/404 ,  B01D2251/60 ,  B01D2255/20738 ,  B01D2257/10 ,  B01D2257/55 ,  B01D2257/602 ,  B01D2258/0283 ,  F23C2201/101 ,  F23J15/006 ,  F23J2215/20 ,  F23J2217/101 ,  F23J2217/102 ,  F23J2219/10 ,  F23J2219/40 ,  F23J2219/60 ,  F23K2201/505 ,  F23N5/003

Abstract: The present invention relates generally to the field of emission control equipment for boilers, heaters, kilns, or other flue gas-, or combustion gas-, generating devices (e.g., those located at power plants, processing plants, etc.) and, in particular to a new and useful method and apparatus for reducing or preventing the poisoning and/or contamination of an SCR catalyst. In still another embodiment, the present invention relates to a method and apparatus for increasing the service life and/or catalytic activity of an SCR catalyst while simultaneously controlling various emissions. In yet another embodiment, the present invention relates to a method and apparatus for controlling, mitigating and/or reducing the amount of selenium contained in and/or emitted by one or more pieces of emission control equipment for boilers, heaters, kilns, or other flue gas-, or combustion gas-, generating devices (e.g., those located at power plants, processing plants, etc.).

Abstract translation: 本发明一般涉及用于锅炉，加热器，窑炉或其它烟道气或燃烧气体的发生装置（例如位于发电厂，加工厂等的那些）的排放控制设备的领域，并且在 特别涉及用于减少或防止SCR催化剂的中毒和/或污染的新的有用的方法和装置。 在另一个实施方案中，本发明涉及一种用于在同时控制各种排放物的同时增加SCR催化剂的使用寿命和/或催化活性的方法和装置。 在另一个实施方案中，本发明涉及一种用于控制，减轻和/或减少用于锅炉，加热器，窑炉或其它的一个或多个排放控制设备和/或排放的硒的量和/或减少的方法和装置 烟气或燃气，生产装置（例如位于发电厂，加工厂等的）。

公开(公告)号：US08251694B2

公开(公告)日：2012-08-28

申请号：US10797513

申请日：2004-03-10

Applicant: Brian S. Higgins

Inventor： Brian S. Higgins

IPC: E23C11/12 ,  C01B17/16

CPC classification number: F23L9/04 ,  F23C6/047 ,  F23C2201/101 ,  F23C2201/20 ,  F23C2201/30 ,  F23J2215/20

Abstract: A method for of reducing the acidity and lowering the acid dewpoint of flue gas, the method steps including partially combusting the fuel in a first stage to create a reducing environment; maintaining the reducing environment for a sufficient time period such that reducible acids are reduced to achieve a desirable acidity concentration in the flue gas; and combusting the remainder of the fuel and combustion intermediates in a second stage with oxidizing environment; thereby decreasing the acidity and lowering the acid dewpoint of the flue gas by reducing the acid concentration of the gas.

Abstract translation: 一种降低烟气酸度和降低酸性露点的方法，所述方法步骤包括在第一阶段部分地燃烧燃料以产生还原环境; 保持还原环境足够的时间，使得可还原的酸被还原以达到烟道气中所需的酸度浓度; 并在具有氧化环境的第二阶段中燃烧剩余的燃料和燃烧中间体; 从而通过降低气体的酸浓度来降低烟气的酸度和降低酸性露点。

公开(公告)号：US20120024206A1

公开(公告)日：2012-02-02

申请号：US13254660

申请日：2010-02-08

Applicant: Mikko Varonen

Inventor： Mikko Varonen

IPC: F23L9/00

CPC classification number: F23C6/045 ,  F23C9/003 ,  F23C10/10 ,  F23C2201/101 ,  F23L7/007 ,  F23L2900/07001 ,  Y02E20/322 ,  Y02E20/344

Abstract: A method for reducing nitrogen oxide emissions in oxyfuel combustion, which method comprises supplying in a furnace (11) of a circulating fluidised bed boiler (10) at least one primary gas flow (15) and at least one secondary gas flow (16), which both have been produced by mixing oxygen and circulated flue gas together. The oxygen content of the primary gas (15) is adjusted such that a reducing zone (I) is formed at the bottom of the furnace, in which zone nitrogen oxides are reduced to nitrogen. The oxygen content of the secondary gas is adjusted such that above the reducing zone (I) is formed an oxidising zone (II), in which zone combustion is completed.

Abstract translation: 一种用于降低氧燃料燃烧中的氮氧化物排放的方法，该方法包括在循环流化床锅炉（10）的炉（11）中供应至少一个主气流（15）和至少一个次气流（16）， 这两者都是通过将氧气和循环的烟道气混合在一起而产生的。 调整一次气体（15）的氧含量，使得在炉底部形成还原区（I），在该区域中氮氧化物被还原成氮气。 调整二次气体的氧含量，使得在还原区（I）上方形成有氧化区（II），其中完成区域燃烧。