公开(公告)号：US06500221B2

公开(公告)日：2002-12-31

申请号：US09865609

申请日：2001-05-25

Applicant: David J. Walker ,  Mikhail Maryamchik ,  Sundara M. Kavidass ,  Felix Belin ,  Kiplin C. Alexander ,  David E. James ,  David R. Gibbs ,  Donald L. Wietzke

Inventor： David J. Walker ,  Mikhail Maryamchik ,  Sundara M. Kavidass ,  Felix Belin ,  Kiplin C. Alexander ,  David E. James ,  David R. Gibbs ,  Donald L. Wietzke

IPC: B01D4508

CPC classification number: B01D45/08 ,  F22B31/0084 ,  F23C10/08

Abstract: Apparatus for separating solids from flue gas in a circulating fluidized bed (CFB) boiler includes plural vertical, impact type particle separators made of cooling tubes located within the CFB in a plurality of staggered rows. One embodiment employs a plurality of stacked, slip fit elements having apertures which accept the cooling tubes. The slip fit elements cooperate with one another to form a collecting channel, typically U-shaped, which separates particles from flue gases conveyed across the particle separators. Shiplap joints in between the individual slip fit elements prevent gas and solids from leaking therebetween and allow for thermal expansion. Alternatively, the impact type particle separators include cooling tubes connected to one another to form a unitary structure. Pin studs welded to the cooling tubes and covered with a coating of refractory; ceramic tiles; metal or ceramic spray coatings; metal or ceramic castings; weld overlay; and/or shields provide erosion resistance.

Abstract translation: 用于在循环流化床（CFB）锅炉中从烟道气中分离固体的装置包括多个垂直的冲击型颗粒分离器，其由位于CFB内的多个交错排中的冷却管制成。 一个实施例采用具有接收冷却管的孔的多个堆叠的滑动配合元件。 滑动配合元件彼此配合以形成通常为U形的收集通道，其将颗粒与通过颗粒分离器输送的烟道气分离。 单个滑动配合元件之间的刮板接头可防止气体和固体在其间泄漏，并允许热膨胀。 或者，冲击式颗粒分离器包括彼此连接以形成一体结构的冷却管。 销螺栓焊接到冷却管并覆盖有耐火材料涂层; 瓷砖; 金属或陶瓷喷涂; 金属或陶瓷铸件; 焊缝覆盖层; 和/或防护罩提供抗侵蚀性。

公开(公告)号：US06322603B1

公开(公告)日：2001-11-27

申请号：US09613132

申请日：2000-07-10

Applicant: David J. Walker

Inventor： David J. Walker

IPC: B01D4508

CPC classification number: F22B31/0084 ,  B01D45/08 ,  F23C10/08

Abstract: An apparatus for separating solids from flue gas in a circulating fluidized bed (CFB) boiler includes a plurality of impact type particle separators mounted vertically to a wall of the CFB. The impact type particle separators being adjacently positioned and horizontally spaced. Each impact type particle separator includes a plurality of vertically mounted cooling tubes connected to a fluid circulating system. A slip fit element surrounds the cooling tubes. A cup shaped configuration is formed by side walls and a back wall. The side walls and back wall have a plurality of separate vertically aligned segments extending along the height of the impact type particle separator. Each vertically aligned segment is connected at its ends to an adjacent segment.

Abstract translation: 用于在循环流化床（CFB）锅炉中从烟道气中分离固体的装置包括垂直安装在CFB壁上的多个冲击型颗粒分离器。 冲击式颗粒分离器相邻定位并水平间隔。 每个冲击式颗粒分离器包括连接到流体循环系统的多个垂直安装的冷却管。 滑动配合元件围绕冷却管。 杯形构造由侧壁和后壁形成。 侧壁和后壁具有沿着冲击型颗粒分离器的高度延伸的多个单独的垂直对齐的部分。 每个垂直对准的段在其端部连接到相邻的段。

公开(公告)号：US06255983B1

公开(公告)日：2001-07-03

申请号：US09519370

申请日：2000-03-06

Applicant: Gregory A. Meszaros ,  Frank L. Kemeny ,  David J. Walker ,  Richard J. Zaranek ,  Frederick J. Mannion

Inventor： Gregory A. Meszaros ,  Frank L. Kemeny ,  David J. Walker ,  Richard J. Zaranek ,  Frederick J. Mannion

IPC: G01S1388

CPC classification number: C21C5/4673 ,  C21C2005/5288 ,  F27D19/00 ,  F27D21/00 ,  F27D21/0028 ,  G01F23/284 ,  G01S7/292 ,  G01S13/103 ,  G01S13/88 ,  Y02P10/216

Abstract: Radar is used to measure not only the level of slag on molten steel but also its thickness; the measurement is used to calculate the volume of slag, and, in turn the amount of additives for slag treatment. Time-of-flight data are used to identify peaks representing the distances of the surfaces of the slag and the surface of the underlying steel. The concept is applicable to other materials of differing composition, and particularly where the underlying material is relatively more conductive than the overlying material. Degassing is more efficiently practiced by using the radar slag thickness determinations to assist in vertical placement of snorkels.

Abstract translation: 雷达不仅用于测量钢水中的炉渣水平，还测量其厚度; 测量用于计算炉渣的体积，反过来又用于渣处理的添加剂量。 飞行时间数据用于识别代表炉渣表面和下层钢板表面距离的峰。 该概念适用于不同组成的其他材料，特别是在下层材料比上覆材料相对导电的情况下。 通过使用雷达炉渣厚度测定来帮助排气管垂直放置，更有效地实施脱气。

公开(公告)号：US5343830A

公开(公告)日：1994-09-06

申请号：US37986

申请日：1993-03-25

Applicant: Kiplin C. Alexander ,  Felix Belin ,  David E. James ,  David J. Walker

Inventor： Kiplin C. Alexander ,  Felix Belin ,  David E. James ,  David J. Walker

IPC: F23C10/08 ,  B01J8/24 ,  F22B31/00 ,  F23C9/00 ,  F23C10/10 ,  F23C10/12 ,  F22B1/00

CPC classification number: F23C10/12 ,  F22B31/0084 ,  F23C10/10 ,  F23J2217/20

Abstract: A CFB reactor or combustor having an internal impact type primary particle separator provides cavity means and particle return means in an upper portion of the reactor enclosure to obtain direct and internal return of all primary collected solids to a bottom portion of the reactor or combustor for subsequent recirculation without external and internal recycle conduits.

Abstract translation: 具有内部冲击型一次粒子分离器的CFB反应器或燃烧器在反应器外壳的上部提供空腔装置和颗粒返回装置，以便将所有主要收集的固体直接和内部返回到反应器或燃烧室的底部，以便随后 没有外部和内部循环管道的循环。

公开(公告)号：US4992085A

公开(公告)日：1991-02-12

申请号：US461707

申请日：1990-01-08

Applicant: Felix Belin ,  David E. James ,  David J. Walker

Inventor： Felix Belin ,  David E. James ,  David J. Walker

IPC: B01D45/08 ,  B01J8/00 ,  F23C10/02 ,  F23C10/18 ,  F23J3/04 ,  F23J15/00

CPC classification number: F23C10/18 ,  B01D45/08 ,  B01J8/0065 ,  F23J2217/20

Abstract: An internal particle separator having impingement members positioned within the furnace enclosure across and just upstream of the furnace exit opening. These impingement members are organized into at least two staggered rows that are positioned to fully cover the exit opening thereby allowing entrained particles to strike the impingement members and free-fall directly back into the fluidized bed to increase its density. A baffle plate is attached to the lower end region of the impingement members thereby obstructing the vertical gas passage between these members.

公开(公告)号：US4428782A

公开(公告)日：1984-01-31

申请号：US401155

申请日：1982-07-23

Applicant: David J. Walker ,  Kenneth Amor

Inventor： David J. Walker ,  Kenneth Amor

IPC: C22F1/04 ,  G01N27/02 ,  G01N27/04 ,  G01N33/20 ,  C21D1/54 ,  C21D11/00

CPC classification number: B82Y15/00 ,  C22F1/04 ,  G01N27/023 ,  G01N27/041 ,  G01N33/20

Abstract: In the heat treatment of aluminium alloy strip, in which hardening of the material is effected by heat treatment to dissolve pre-existing precipitates in the metal matrix followed by quenching and ageing, the electrical conductance of the strip after quenching is measured using a conductivity probe scanned across the width of the strip, the heating being controlled in accordance with the measured conductance so as to obtain uniform electrical conductance across the width of the strip. This measured electrical conductance has a close correlation with the required mechanical properties. A transmitter producing an electromagnetic field is moved across the strip and a receiver, picking up signals due to the eddy currents in the strip, provides an output automatically controlling the movement of flux modifiers of a transverse flux induction heater to control the strip heating.

Abstract translation: 在铝合金条的热处理中，通过热处理来进行材料的硬化以将预先存在的沉淀物溶解在金属基体中，然后淬火和老化，淬火后的带材的导电率使用电导率探针 在条带的宽度上扫描，加热根据测量的电导进行控制，以便在条带的宽度上获得均匀的电导率。 该测量的电导与所需的机械特性密切相关。 产生电磁场的发射器在条带和接收器之间移动，由于条带中的涡流而拾取信号，提供自动控制横向磁感应加热器的磁通量调节器的运动以控制条带加热的输出。

公开(公告)号：US07656170B2

公开(公告)日：2010-02-02

申请号：US11675013

申请日：2007-02-14

Applicant: Gustavo A. Pinto ,  Brian C. Leslie ,  David L. Adler ,  Akella V. S. Satya ,  Padma A. Satya, legal representative ,  Robert Thomas Long ,  David J. Walker

Inventor： Gustavo A. Pinto ,  Brian C. Leslie ,  David L. Adler ,  Akella V. S. Satya ,  Robert Thomas Long ,  David J. Walker

IPC: G01R31/02

CPC classification number: H01L23/5226 ,  H01L22/34 ,  H01L2924/0002 ,  H01L2924/00

Abstract: Disclosed is a method of inspecting a sample. The sample is scanned in a first direction with at least one particle beam. The sample is scanned in a second direction with at least one particle beam. The second direction is at an angle to the first direction. The number of defects per an area of the sample are found as a result of the first scan, and the position of one or more of the found defects is determined from the second scan. In a specific embodiment, the sample includes a test structure having a plurality of test elements thereon. A first portion of the test elements is exposed to the beam during the first scan to identify test elements having defects, and a second portion of the test elements is exposed during the second scan to isolate and characterize the defect.

Abstract translation: 公开了一种检查样品的方法。 用至少一个粒子束沿第一方向扫描样品。 用至少一个粒子束在第二个方向上扫描样品。 第二方向与第一方向成一个角度。 作为第一扫描的结果，发现样品的每个区域的缺陷数，并且从第二次扫描确定发现的一个或多个缺陷的位置。 在具体实施例中，样本包括其上具有多个测试元件的测试结构。 测试元件的第一部分在第一次扫描期间暴露于光束以识别具有缺陷的测试元件，并且第二部分测试元件在第二次扫描期间暴露以分离和表征缺陷。

公开(公告)号：US07543647B2

公开(公告)日：2009-06-09

申请号：US11615529

申请日：2006-12-22

Applicant: David J. Walker

Inventor： David J. Walker

IPC: E21B43/00

CPC classification number: E21B23/006 ,  E21B33/12 ,  E21B34/06 ,  E21B34/063 ,  E21B43/08 ,  E21B43/14 ,  E21B43/26

Abstract: An improved well completion system for completing two or more separate production zones in a well bore during a single downhole trip is disclosed. The improved completion system comprises a completion assembly comprising two or more production zone assemblies and a completion tool assembly. Each production zone assembly may comprise an automatic system locating assembly and at least two inverted seal systems for sealing against the tool assembly.

公开(公告)号：US07464669B2

公开(公告)日：2008-12-16

申请号：US11406765

申请日：2006-04-19

Applicant: Mikhail Maryamchik ,  Michael J. Szmania ,  David E. James ,  David J. Walker ,  Donald L. Wietzke

Inventor： Mikhail Maryamchik ,  Michael J. Szmania ,  David E. James ,  David J. Walker ,  Donald L. Wietzke

IPC: F23C10/24

CPC classification number: F23C10/18 ,  F23J1/00 ,  F23J2900/01002

Abstract: An integrated fluidized bed ash cooler for a fluidized bed boiler, particularly a circulating fluidized bed (CFB) boiler, employs at least two fluidized bed sections positioned in series along a solids flow path. Each section contains fluidizing means, the first section along the solids path being separated from a following section with a threshold. The first section contains means for measuring a bed temperature in the vicinity of the fluidizing means and at a higher elevation within the fluidized bed. Means are provided for removing oversized bed material from the first section to facilitate the removal of ash while minimizing the possibility of ash plugging during operation.

Abstract translation: 用于流化床锅炉，特别是循环流化床（CFB）锅炉的集成流化床灰分冷却器采用沿着固体流动路径串联定位的至少两个流化床部分。 每个部分包含流化装置，沿着固体路径的第一部分与具有阈值的随后部分分离。 第一部分包含用于测量流化床附近的床温度以及在流化床内的较高高度的装置。 提供了用于从第一部分移除超大床层材料的手段，以便于在运行期间最小化灰尘堵塞的可能性的灰分除去。

公开(公告)号：US20080237487A1

公开(公告)日：2008-10-02

申请号：US11675013

申请日：2007-02-14

Applicant: Gustavo A. Pinto ,  Brian C. Leslie ,  David L. Adler ,  Akella V.S. Satya ,  Robert Thomas Long ,  David J. Walker ,  Padma A. Satya

Inventor： Gustavo A. Pinto ,  Brian C. Leslie ,  David L. Adler ,  Akella V.S. Satya ,  Robert Thomas Long ,  David J. Walker ,  Padma A. Satya

IPC: G21G5/00

CPC classification number: H01L23/5226 ,  H01L22/34 ,  H01L2924/0002 ,  H01L2924/00

Abstract: Disclosed is a method of inspecting a sample. The sample is scanned in a first direction with at least one particle beam. The sample is scanned in a second direction with at least one particle beam. The second direction is at an angle to the first direction. The number of defects per an area of the sample are found as a result of the first scan, and the position of one or more of the found defects is determined from the second scan. In a specific embodiment, the sample includes a test structure having a plurality of test elements thereon. A first portion of the test elements is exposed to the beam during the first scan to identify test elements having defects, and a second portion of the test elements is exposed during the second scan to isolate and characterize the defect.

Abstract translation: 公开了一种检查样品的方法。 用至少一个粒子束沿第一方向扫描样品。 用至少一个粒子束在第二个方向上扫描样品。 第二方向与第一方向成一个角度。 作为第一扫描的结果，发现样品的每个区域的缺陷数，并且从第二次扫描确定发现的一个或多个缺陷的位置。 在具体实施例中，样本包括其上具有多个测试元件的测试结构。 测试元件的第一部分在第一次扫描期间暴露于光束以识别具有缺陷的测试元件，并且第二部分测试元件在第二次扫描期间暴露以分离和表征缺陷。