公开(公告)号：US20030159662A1

公开(公告)日：2003-08-28

申请号：US10085715

申请日：2002-02-27

发明人： Melvin J. Albrecht ,  John B. Rogan

IPC分类号： F22G007/00

CPC分类号： F22B37/008

摘要： A system for maintaining an optimal flue gas inlet to a boiler mounted SCR assembly in the flue of the boiler is accomplished by mixing the normal inlet feedwater to an economizer of the boiler with near saturation water from downcomers of the boiler to thereby raise the temperature of the flue gas passing across the economizer and raising the SCR inlet to the desired optimal SCR operation temperature.

摘要翻译： 将锅炉安装的SCR组件的最佳烟气进口保持在锅炉烟道中的系统是通过将来自锅炉的正常进料给水与来自锅炉的下管的近饱和水混合到锅炉的节能器中而实现的，从而提高了锅炉的温度 烟气通过节能器并将SCR入口升高到期望的最佳SCR操作温度。

公开(公告)号：US6435138B2

公开(公告)日：2002-08-20

申请号：US89288101

申请日：2001-06-28

申请人： TOSHIBA KK

发明人： SHIMADA HIDEAKI ,  EGAMI NORIHIDE ,  NAGASHIMA TAKAYUKI

IPC分类号： F23J15/00 ,  B01D53/94 ,  F22B1/18 ,  F22B37/00 ,  F22D1/00

CPC分类号： F22B1/1815 ,  F22B37/008 ,  Y02C20/10

摘要： An exhaust heat recovery boiler in which an exhaust gas discharged from a gas turbine into a boiler duct to recover a heat of the exhaust gas and ammonia is injected to and mixed with the exhaust gas to reduce nitrogen oxide contained in the exhaust gas, the exhaust heat recovery boiler comprising: a boiler duct of a horizontal installation type having an inner hollow portion along which an exhaust gas flows from an upstream side to a downstream side; a superheater; an evaporator; a denitration reactor; and an economizer, which are disposed inside the boiler duct in this order from the upstream side to the downstream side of the exhaust gas flow therein. A drum is disposed outside the boiler duct and connected to the evaporator and a downcomer pipe extending from the drum into the boiler duct. An ammonia injection unit is disposed inside the boiler duct for injecting ammonia, and the ammonia injection unit is disposed upstream side of the evaporator closely to the downcomer pipe unit on either one of upstream side and downstream side of the downcomer pipe unit.

公开(公告)号：US20020079374A1

公开(公告)日：2002-06-27

申请号：US10024874

申请日：2001-12-19

发明人： James F. DeSellem

IPC分类号： F27D019/00

CPC分类号： F22B37/008

摘要： A flue gas passage arrangement for a steam generator which permits adjustment of the heat transfer effectiveness of a final bank of heat exchanger surface to control a temperature of the flue gas flowing through and exiting from the flue gas passage and conveyed to a downstream NOx reduction device having a minimum operating temperature. The NOx reduction device is advantageously an SCR. Economizer heating surface is located within the flue gas passage, and a baffle plate extends through the flue gas passage and creates two flue gas paths there through. The economizer heating surface may be a single, common bank having a section located in both gas paths, or in only one gas path. Alternatively, two separate banks of economizer heating surface may be employed. A variable position damper is provided in one gas path, either below or above one section. The variable position damper can be selectively opened or closed to permit or restrict the flow of flue gases through the second section to control the effectiveness of the economizer heating surface to maintain the temperature of the flue gas conveyed to the downstream NOx reduction device at or above the minimum operating temperature.

摘要翻译： 一种用于蒸汽发生器的烟道气体通道装置，其允许调节热交换器表面的最后一组的传热效果，以控制流过和从烟道气通道流出并输送到下游NOx还原装置的烟道气的温度 具有最低工作温度。 NOx还原装置有利地是SCR。 节能器加热表面位于烟气通道内，挡板延伸穿过烟气通道，并在其间形成两条烟道。 节能器加热表面可以是具有位于两个气体路径中的部分或仅在一个气体路径中的单个公共组。 或者，可以采用两个独立的节能器加热表面。 可变位置阻尼器设置在一个气体通道中，在一个部分的下方或上方。 可选择性地打开或关闭可变位置阻尼器以允许或限制烟气通过第二部分的流动，以控制节能器加热表面的有效性，以将输送到下游NOx还原装置的烟道气的温度保持在等于或高于 最低工作温度。

公开(公告)号：US20010035136A1

公开(公告)日：2001-11-01

申请号：US09892881

申请日：2001-06-28

申请人： KABUSHIKI KAISHA TOSHIBA

发明人： Hideaki Shimada ,  Norihide Egami ,  Takayuki Nagashima

IPC分类号： F22G003/00

CPC分类号： F22B1/1815 ,  F22B37/008 ,  Y02C20/10

摘要： An exhaust heat recovery boiler in which an exhaust gas discharged from a gas turbine into a boiler duct to recover a heat of the exhaust gas and ammonia is injected to and mixed with the exhaust gas to reduce nitrogen oxide contained in the exhaust gas, the exhaust heat recovery boiler comprising: a boiler duct of a horizontal installation type having an inner hollow portion along which an exhaust gas flows from an upstream side to a downstream side; a superheater; an evaporator; a denitration reactor; and an economizer, which are disposed inside the boiler duct in this order from the upstream side to the downstream side of the exhaust gas flow therein. A drum is disposed outside the boiler duct and connected to the evaporator and a downcomer pipe extending from the drum into the boiler duct. An ammonia injection unit is disposed inside the boiler duct for injecting ammonia, and the ammonia injection unit is disposed upstream side of the evaporator closely to the downcomer pipe unit on either one of upstream side and downstream side of the downcomer pipe unit.

摘要翻译： 一种废热回收锅炉，其中将从燃气轮机排放到锅炉管道中以将废气和氨的热量回收的废气注入废气中并与其混合以减少废气中包含的氮氧化物，排气 热回收锅炉，包括：水平安装型锅炉管道，其具有内部中空部分，排气沿着该内部中空部分从上游侧流向下游侧; 过热器 蒸发器; 脱硝反应器 以及节能器，其从排气流的上游侧向下游侧依次配置在锅炉管内。 鼓被设置在锅炉管道外部并连接到蒸发器和从滚筒延伸到锅炉管道中的降管。 氨喷射单元设置在锅炉管道内用于喷射氨，并且氨注入单元设置在蒸发器的上游侧，与降液管单元的上游侧和下游侧的下降管相邻。

公开(公告)号：US20010000094A1

公开(公告)日：2001-04-05

申请号：US09727581

申请日：2000-12-04

发明人： Hideaki Shimada ,  Norihide Egami ,  Takayuki Nagashima

IPC分类号： F22D001/00

CPC分类号： F22B1/1815 ,  F22B37/008 ,  Y02C20/10

摘要： An exhaust heat recovery boiler in which an exhaust gas discharged from a gas turbine into a boiler duct to recover a heat of the exhaust gas and ammonia is injected to and mixed with the exhaust gas to reduce nitrogen oxide contained in the exhaust gas, the exhaust heat recovery boiler comprising: a boiler duct of a horizontal installation type having an inner hollow portion along which an exhaust gas flows from an upstream side to, a downstream side; a superheater; an evaporator; a denitration reactor; and an economizer, which are disposed inside the boiler duct in this order from the upstream side to the downstream side of the exhaust gas flow therein. A drum is disposed outside the boiler duct and connected to the evaporator and a downcomer pipe extending from the drum into the boiler duct. An ammonia injection unit is disposed inside the boiler duct for injecting ammonia, and the ammonia injection unit is disposed upstream side of the evaporator closely to the downcomer pipe unit on either one of upstream side and downstream side of the downcomer pipe unit.

摘要翻译： 一种废热回收锅炉，其中将从燃气轮机排放到锅炉管道中以将废气和氨的热量回收的废气注入废气中并与其混合以减少废气中包含的氮氧化物，排气 热回收锅炉，包括：水平安装型锅炉管道，其具有内部中空部分，排气从上游侧流向下游侧; 过热器 蒸发器; 脱硝反应器 以及节能器，其从排气流的上游侧向下游侧依次配置在锅炉管内。 鼓被设置在锅炉管道外部并连接到蒸发器和从滚筒延伸到锅炉管道中的降管。 氨喷射单元设置在锅炉管道内用于喷射氨，并且氨注入单元设置在蒸发器的上游侧，与降液管单元的上游侧和下游侧的下降管相邻。

公开(公告)号：US5943865A

公开(公告)日：1999-08-31

申请号：US204965

申请日：1998-12-03

申请人： Mitchell B. Cohen

发明人： Mitchell B. Cohen

IPC分类号： F23J15/06 ,  B01D53/86 ,  F22B37/00 ,  F23C13/00 ,  F23J15/02 ,  F23J15/04 ,  F01K7/34 ,  F23D14/00

CPC分类号： B01D53/8631 ,  F22B37/008 ,  F23J2215/10 ,  F23J2219/10

摘要： A method and apparatus for controlling the temperature of a flue gas stream entering a Selective Catalytic Reduction chamber in a steam generating power plant that utilizes Selective Catalytic Reduction (SCR) to lower NO.sub.x emissions is disclosed. The method involves the utilization of superheated steam to control the temperature of the flue gas prior to the flue gas entering the Selective Catalytic Reduction chamber such that there is a reduction in lost energy to the thermodynamic steam cycle caused by spray desuperheating.

摘要翻译： 公开了一种用于控制进入使用选择性催化还原（SCR）来降低NOx排放的蒸汽发电厂中的选择性催化还原室的烟道气流的温度的方法和装置。 该方法涉及利用过热蒸汽来控制烟道气进入选择性催化还原室之前的温度，使得由喷雾过热引起的热力学蒸汽循环的能量损失减少。

公开(公告)号：US5687657A

公开(公告)日：1997-11-18

申请号：US629736

申请日：1996-04-09

申请人： Geoarg Ziegler

发明人： Geoarg Ziegler

IPC分类号： F23J15/00 ,  B01D45/06 ,  F22B1/18 ,  F22B37/00 ,  F22B37/40 ,  F22B37/48 ,  F23J3/00 ,  F23J15/06 ,  F23B7/00

CPC分类号： B01D45/06 ,  F22B37/008

摘要： In a method of and a device for reducing the dust content of the exhaust gases (18) of a steam generator which consists of a combustion chamber (1), a radiation part (2) and a convection part (3) and has at least two vertical gas passes (4, 5), the dust portion of the exhaust gases (18) is reduced before the exhaust gases (18) enter the convective part (3) of the steam generator. The front wall (7) and/or the rear wall (8) of the steam generator is of double-sided design in the region of the gas deflection from the vertical pass (4) having downward flow to the vertical pass (5) having upward flow, the outer wall (12) consisting of a known gastight tube-web-tube construction (13) and the inner wall (14) consisting of tubes (15) which are arranged in such a way that an intermediate space (16) through which flow can occur is present in each case between the tubes (15), a flow-stabilized zone (17) being defined by the outer wall (12) and the inner wall (14), and the inner (14) and the outer wall (12) being cooled by means of cooling fluid flowing through the tubes.

摘要翻译： 一种用于减少由燃烧室（1），辐射部分（2）和对流部分（3）组成的蒸汽发生器的废气（18）的灰尘含量的方法和装置，并且至少具有 在排气（18）进入蒸汽发生器的对流部分（3）之前，两个垂直气体通道（4,5），废气（18）的灰尘部分被减少。 蒸汽发生器的前壁（7）和/或后壁（8）在从具有向下流动的垂直通道（4）向垂直通道（5）的气体偏转区域中是双面设计的， 向上流动的外壁（12）由已知的气密管 - 腹板管构造（13）和由管（15）构成的内壁（14）组成，内壁（14）以这样的方式设置，使得中间空间（16） 在每个情况下，在管（15）之间存在可能发生流动的流动稳定区（17），由外壁（12）和内壁（14）限定的流动稳定区（17）以及内部（14）和 外壁（12）通过流过管的冷却流体冷却。

公开(公告)号：US5555718A

公开(公告)日：1996-09-17

申请号：US337994

申请日：1994-11-10

申请人： David K. Anderson ,  Mark R. Malo

发明人： David K. Anderson ,  Mark R. Malo

IPC分类号： B01D53/79 ,  B01D53/86 ,  F22B1/18 ,  F22B37/00 ,  F23J15/00 ,  F02C6/18

CPC分类号： F23J15/003 ,  B01D53/79 ,  B01D53/8631 ,  F22B1/1815 ,  F22B37/008 ,  B01D2251/2062 ,  B01D2251/2067 ,  F23J2215/10 ,  F23J2219/10 ,  Y02E20/16

摘要： A combined cycle system has a gas turbine connected to a heat recovery steam generator and the heat recovery steam generator contains a selective catalytic reactor section wherein nitrogen oxides (NO.sub.x) are reacted with reactant gas such as ammonia or urea to produce molecular nitrogen and water vapor. The expanding transition section contains an array of flow profile control pipes extending across the section in a pattern which distribute the flue gas uniformly over the large cross-section of the heat transfer section. The reactant gas is injected into the flue gas stream through a series of nozzles spaced across the flow control pipes so as to uniformly mix and distribute the reactant gas in the flue gas stream before it enters the selective catalytic reactor section.

摘要翻译： 联合循环系统具有连接到热回收蒸汽发生器的燃气轮机，并且热回收蒸汽发生器含有选择性催化反应器部分，其中氮氧化物（NOx）与诸如氨或尿素的反应气体反应以产生分子氮和水蒸汽 。 膨胀的过渡部分包含一个流动剖面控制管的阵列，该流动分布控制管以一种将烟道气均匀地分布在传热部分的大横截面上的模式延伸穿过该部分。 反应气体通过在流动控制管间隔开的一系列喷嘴注入烟气流中，以便在烟气流进入选择性催化反应器部分之前将反应气体均匀地混合和分配。

公开(公告)号：US4827711A

公开(公告)日：1989-05-09

申请号：US114221

申请日：1987-10-29

申请人： Matti J. Isaksson

发明人： Matti J. Isaksson

IPC分类号： F01K21/04 ,  F02C3/30 ,  F02C6/18 ,  F22B1/18 ,  F22B37/00

CPC分类号： F22B37/008 ,  F01K21/047 ,  F02C3/30 ,  F02C6/18 ,  F22B1/1815 ,  Y02E20/14

摘要： In a gas turbine process in which hot moist gas produced by combusting natural gas and injecting steam to the combustion device, the relative moisture content of the gas is reduced after the turbine by adiabatic absorption by means of an absorbent liquid the only evaporating component of which is water. The condensation heat of the aqueous steam condensed in the absorption is to a large extent conveyed to the gas the temperature of which is thereby raised. The heat is recovered by known methods for use e.g. in district heating. The diluted absorbent liquid is regenerated for example by arranging it in the heat recovery stage before the absorption in indirect heat exchange contact with the gas.

摘要翻译： 在通过燃烧天然气并将蒸汽喷射到燃烧装置而产生的热湿气体的燃气轮机方法中，通过吸收液体的绝热吸收，在涡轮机之后气体的相对含水量降低，其中仅有蒸发成分 是水。 在吸收中冷凝的含水蒸气的冷凝热在很大程度上被输送到其温度由此升高的气体。 通过已知的方法回收热量，例如使用。 在区域供暖。 稀释的吸收液体例如通过在与气体间接热交换接触吸收之前将其布置在热回收阶段而再生。

公开(公告)号：US4693213A

公开(公告)日：1987-09-15

申请号：US841179

申请日：1986-03-19

申请人： Eiji Yanai ,  Tetsuzo Kuribayashi

发明人： Eiji Yanai ,  Tetsuzo Kuribayashi

IPC分类号： F22B1/18 ,  B01D53/86 ,  F01K23/10 ,  F22B37/00 ,  F23J15/00 ,  F22D1/00

CPC分类号： F23J15/006 ,  B01D53/8631 ,  F01K23/106 ,  F22B37/008 ,  F23J2219/10

摘要： A waste heat recovery boiler for a turbine including two denitrating devices disposed in the boiler to reduce the NOx concentration in an exhaust gas below a pre-determined value even when a turbine load changes. The overall denitration efficiency distribution of the boiler with respect to the turbine load can be set arbitrarily by selecting suitable positions of the denitrating devices and the amounts of a catalyst, and any adverse effects resulting from the change of the turbine load can be avoided.

摘要翻译： PCT No.PCT / JP85 / 00466 Sec。 371日期：1986年3月19日 102（e）1986年3月19日PCT PCT 1985年8月23日PCT公布。 出版物WO86 / 01579 日期：1986年3月13日。一种用于涡轮机的废热回收锅炉，包括设置在锅炉中的两个脱硝装置，以便即使在涡轮机负荷变化时也将排气中的NOx浓度降低到预定值以下。 锅炉相对于涡轮机负载的总体脱硝效率分布可以通过选择脱硝装置的适当位置和催化剂的量来任意设定，并且可以避免由于涡轮机负载的变化而引起的任何不利影响。