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1. 发明授权

US10655518B2 Systems for reducing startup emissions in power plant including gas turbine 有权
公开(公告)号：US10655518B2
公开(公告)日：2020-05-19
申请号：US15437785
申请日：2017-02-21
申请人： General Electric Company
发明人： Parag Prakash Kulkarni , Naresh Kumar Amineni , Lewis Berkley Davis, Jr. , Gordon Raymond Smith
IPC分类号： F01N3/021 , F01N3/035 , F01D25/30 , F02C6/18 , F02C7/26 , F02C9/28 , F01K23/10 , F01K7/18
摘要： Embodiments of emission reduction system including various embodiments of an emission filters for a power plant including a gas turbine are disclosed. The system includes: an emission filter; and a retraction system operably coupled to an exhaust passage of the gas turbine. The exhaust passage defines an exhaust path of exhaust from the gas turbine. The retraction system selectively moves the emission filter between a first location within the exhaust path and a second location out of the exhaust path. In a combined cycle power plant, the first location is upstream of a heat recovery steam generator (HRSG). The systems and filters described allow for temporary positioning of emission filter(s) just downstream of a gas turbine exhaust outlet, or upstream of an HRSG, where provided, for emission reduction at low loads or startup conditions, and removal of the emission filter(s) once operations move to higher loads.

2. 发明授权

US10316700B2 Combined cycle power plant having supercritical steam turbine 有权
公开(公告)号：US10316700B2
公开(公告)日：2019-06-11
申请号：US15549555
申请日：2016-01-25
申请人： Siemens Aktiengesellschaft
发明人： Michael S. Briesch , Ankur Deshmukh , Thorsten Wolf
IPC分类号： F01K3/26 , F01K7/18 , F01K7/22 , F01K7/32 , F01K23/10
摘要： A combine cycle power plant is presented. The combine cycle power plant includes a gas turbine, a heat recovery steam generator, a main steam turbine and a supercritical steam turbine. The supercritical steam turbine may be operated as a separate steam turbine that may be not a single steam turboset with the main steam turbine. The supercritical steam turbine receives supercritical steam generated in the heat recovery steam generator to produce power output. Exiting steam from the supercritical steam turbine may be routed to the main steam turbine. The supercritical steam turbine may be operated at a rotational speed that is higher than a grid frequency. The rotational speed of the supercritical steam turbine may be reduced to the grid frequency via a gearbox.

3. 发明申请

US20190093563A1 FUEL PREHEATING SYSTEM FOR A COMBUSTION TURBINE ENGINE 审中-公开
公开(公告)号：US20190093563A1
公开(公告)日：2019-03-28
申请号：US15718705
申请日：2017-09-28
申请人： General Electric Company
发明人： Kenneth Eugene Selfridge , Douglas Frank Beadie , Alberto Jose Negroni
IPC分类号： F02C7/224 , F01K23/10 , F02C6/18 , F01K7/18 , F22D5/28
摘要： A combined cycle power plant that includes a gas turbine and HRSG engaged with a steam turbine via a water steam cycle having higher and lower pressure levels. The CCPP further includes a fuel line and fuel preheater. A higher pressure feedwater line delivers higher pressure feedwater to a higher pressure feedwater branch that extends through the fuel preheater, the high pressure feedwater branch including upstream and downstream segments defined to each side of the fuel preheater. A lower pressure feedwater line delivers lower pressure feedwater to a lower pressure feedwater branch. The downstream segment of the higher pressure feedwater branch is combined with the lower pressure feedwater branch at a junction point and a combined feedwater line extends therefrom. A first heat exchanger exchanges heat between the combined feedwater line and fuel line. A second heat exchanger exchanges heat between the higher pressure feedwater branch and fuel line.

4. 发明授权

US09664071B2 Steam turbine plant 有权
公开(公告)号：US09664071B2
公开(公告)日：2017-05-30
申请号：US13081296
申请日：2011-04-06
申请人： Koichi Goto , Nobuo Okita
发明人： Koichi Goto , Nobuo Okita
IPC分类号： F01K7/22 , F01K7/18 , F22B1/00
CPC分类号： F01K7/18 , F01K7/22 , F01K7/226 , F22B1/006 , Y02E10/46
摘要： A steam turbine plant of one embodiment includes at least one heater configured to change water into steam to produce high pressure steam and low pressure steam having a lower pressure than the high pressure steam, a high pressure turbine including a turbine or turbines connected to each other in series, and having a first inlet to supply the high pressure steam, a second inlet to supply the low pressure steam and located at a downstream of the first inlet, and an exhaust port located at a downstream of the second inlet, the high pressure turbine being configured to be driven by the steam supplied from the first and second inlets, a reheater configured to heat the steam exhausted from the exhaust port, and a reheat turbine configured to be driven by the steam from the reheater.

5. 发明申请

US20140373541A1 METHOD AND APPARATUS FOR SAFETY OPERATION OF EXTRACTION STEAM TURBINE UTILIZED FOR POWER GENERATION PLANT 有权
标题翻译：用于发电厂的提取蒸汽轮机的安全运行方法和装置
公开(公告)号：US20140373541A1
公开(公告)日：2014-12-25
申请号：US14478648
申请日：2014-09-05
申请人： FUJI ELECTRIC CO., LTD.
发明人： Yoshifumi KATO
IPC分类号： F01D17/08 , F01K13/02 , F01K7/18 , F01D17/10
CPC分类号： F01D17/08 , F01D17/10 , F01D17/145 , F01D21/14 , F01K7/04 , F01K7/18 , F01K13/02 , F05D2220/31 , F05D2270/301
摘要： A safety operation method includes detecting a steam pressure inside a high-pressure casing of the high-pressure part and a steam pressure inside a low-pressure casing of the low-pressure part; obtaining a low-pressure casing limit pressure as a reference corresponding to a pressure of the high-pressure casing in each detection, on a basis of a pressure correlation line expressing a prescribed special relation between preset high-pressure casing pressure and low-pressure casing pressure of the extraction steam turbine; comparing the low-pressure casing limit pressure with the detected pressure of the low-pressure casing; and forcibly throttling an opening of the main steam control valve to reduce the flow rate of steam flowing into the high-pressure part, in a state in which the extraction control valves continue controlling an operation of the extraction steam pressure, when the detected pressure of the low-pressure casing is judged to be higher than the low-pressure casing limit pressure.
摘要翻译：一种安全操作方法，包括检测高压部分的高压壳体内的蒸汽压力和低压部件的低压壳体内的蒸汽压力; 基于表示规定的预设高压套管压力和低压套管的特殊关系的压力相关线，在每次检测中获得低压套管极限压力作为对应于高压套管的压力的基准抽汽汽轮机的压力; 将低压套管极限压力与低压套管的检测压力进行比较; 并且当检测到的压力达到检测压力时，在抽出控制阀继续控制提取蒸汽压力的操作的状态下，强制地节流主蒸汽控制阀的开口，以减少流入高压部分的蒸汽的流量低压套管被判断为比低压套管极限压力高。

6. 发明授权

US4138851A Apparatus and method of geothermal energy conversion 失效
标题翻译：地热能转换装置与方法
公开(公告)号：US4138851A
公开(公告)日：1979-02-13
申请号：US820984
申请日：1977-08-01
申请人： Alfred N. Rogers , Leon Awerbuch
发明人： Alfred N. Rogers , Leon Awerbuch
IPC分类号： F01K7/18 , F01K17/04 , F03G7/04 , F03G7/00
CPC分类号： F01K7/18 , F01K17/04 , F03G7/04 , Y02E10/10 , Y10S203/17 , Y10S203/21
摘要： A system using a number of flash chambers for converting the heat energy of geothermal brine to useful work. The system uses steam from flashed brine to vaporize a portion of distilled water or distillate in one or more heat exchangers to produce steam to drive a turbine which, in turn, operates a generator or the like to produce useful work. Before the distillate reaches the heat exchanger, it is preheated as it flows through a series of flash chambers in countercurrent relationship to the flow of geothermal brine therethrough. The brine flashes in each flash chamber and the flashed vapor mixes with the distillate flowing through the flash chamber to pre-heat the distillate. The heat energy of the unvaporized part of the distillate in the heat exchanger can form additional steam which is also supplied to the turbine. The heat content of the unflashed part of the distillate can be used in several ways to heat a working fluid in a closed loop containing a second turbine. The unflashed distillate can either be directed through a second heat exchanger which also receives a second working fluid so as to heat the latter, or the unflashed distillate can be flashed and the flashed vapor is placed in heat exchange relationship to the working fluid. Condensate formed in the latter case can be used as fresh product water. Inorganic salts from the brine can also be derived from the system.
摘要翻译：一种使用多个闪蒸室将系统的地热盐水热能转化为有用功的系统。该系统使用来自闪蒸盐水的蒸汽蒸发一个或多个热交换器中的蒸馏水或馏出物的一部分，以产生蒸汽来驱动涡轮，其又运行发电机等以产生有用的工作。在馏出物到达热交换器之前，当其与通过其中的地热盐水的流动呈逆流关系时，它被预热。卤水在每个闪光室中闪烁，闪蒸的蒸气与流过闪蒸室的馏出物混合，以预热蒸馏物。热交换器中馏出物的未蒸发部分的热能可以形成额外的蒸汽，其也被供应到涡轮机。馏出物的未燃烧部分的热含量可以以多种方式用于加热含有第二涡轮机的闭合回路中的工作流体。未燃烧的馏出物可以被引导通过第二热交换器，其也接收第二工作流体以加热后者，或者未闪蒸的馏出物可以被闪蒸并且闪蒸的蒸汽与工作流体成热交换关系。在后一种情况下形成的冷凝水可用作新鲜水产品。盐水中的无机盐也可以从系统中得到。

7. 发明授权

US3457725A Apparatus for covering a peak load or a rapidly changing load in a steam turbine plant 失效
标题翻译：用于在蒸汽涡轮机中覆盖峰值负载或快速更换负载的装置
公开(公告)号：US3457725A
公开(公告)日：1969-07-29
申请号：US3457725D
申请日：1967-11-24
申请人： BBC BROWN BOVERI & CIE
发明人： SCHWARZENBACH ALFRED
IPC分类号： F22B35/00 , F01D17/00 , F01K3/26 , F01K7/18 , F01K7/22 , F01K7/16 , F01K3/14
CPC分类号： F01K3/265

8. 发明授权

US2924074A chambadal etal 失效
公开(公告)号：US2924074A
公开(公告)日：1960-02-09
申请号：US2924074D
IPC分类号： F01K3/26 , F01K7/18
CPC分类号： F01K7/18 , F01K3/267

9. 发明授权

US10655517B2 Systems for reducing startup emissions in power plant including gas turbine 有权
公开(公告)号：US10655517B2
公开(公告)日：2020-05-19
申请号：US15437771
申请日：2017-02-21
申请人： General Electric Company
发明人： Parag Prakash Kulkarni , Lewis Berkley Davis, Jr. , Raymond Pang , Gordon Raymond Smith
IPC分类号： F01N3/021 , F01N3/10 , F01D25/30 , F01N3/035 , F01N3/20 , F02C9/28 , F01N5/02 , F01N3/022 , F01N13/00 , F02C7/26 , F02C6/18 , F01K23/10 , F01K7/18
摘要： Embodiments of emission reduction system including various embodiments of an emission filters for a power plant including a gas turbine are disclosed. The system includes: an emission filter; and a retraction system operably coupled to an exhaust passage of the gas turbine. The exhaust passage defines an exhaust path of exhaust from the gas turbine. The retraction system selectively moves the emission filter between a first location within the exhaust path and a second location out of the exhaust path. In a combined cycle power plant, the first location is upstream of a heat recovery steam generator (HRSG). The systems and filters described allow for temporary positioning of emission filter(s) just downstream of a gas turbine exhaust outlet, or upstream of an HRSG, where provided, for emission reduction at low loads or startup conditions, and removal of the emission filter(s) once operations move to higher loads.

10. 发明授权

US10233789B2 Method and plant for co-generation of heat and power 有权
公开(公告)号：US10233789B2
公开(公告)日：2019-03-19
申请号：US15034097
申请日：2014-10-31
申请人： SASOL TECHNOLOGY PROPRIETARY LIMITED
发明人： Franco Gasparini , Rian Wessels , Corné Welgemoed
IPC分类号： F01K23/10 , F02C6/18 , F22B1/18 , F22G5/12 , F01K7/18 , F01K13/02 , F01K17/02 , F01K23/06
摘要： A method of operating a combined heat and power plant (10) (CHP plant) includes generating hot flue gas and cooling the hot flue gas in a sequence of cooling steps to recover heat and to generate steam in a heat recovery steam generator (16) (HRSG). The HRSG (16) includes an LP steam evaporator (36) designed to generate steam at least over a pressure range of from 2 bar(g) to 18 bar(g) so that either LP steam or MP steam can selectively be generated by the LP steam generator (36), thereby to cool the hot flue gas, and an MP steam superheater (24) upstream of the LP steam evaporator (36) to superheat MP steam in heat exchange with the hot flue gas thereby to cool the hot flue gas. The method further includes, when no or insufficient MP steam is being imported to the MP steam superheater (24) to ensure safe operation of the MP steam superheater, and/or when a demand exists for exporting MP steam which cannot be satisfied by imported MP steam superheated in the MP steam superheater (24), and/or when a demand exists for MP steam in the CHP plant which cannot be satisfied by imported MP steam, operating the LP steam evaporator (36) at an operating pressure in the range of between 8 bar(g) and 18 bar(g) to generate MP steam to wet the MP steam superheater (24) and/or to satisfy at least to some extent said demand for MP steam, and thereafter, when sufficient MP steam is being imported to the MP steam superheater (24) from external of the CHP plant (10) to ensure safe operation of the MP steam superheater (24), and/or when any demand for exported MP steam is satisfied by imported MP steam which is superheated in the MP steam superheater (24) and then exported, and/or when there is no more demand for exporting of MP steam, and/or when the demand for MP steam in the CHP plant (10) is being satisfied at least to some extent by imported MP steam, reducing the operating pressure of the LP steam evaporator (36) to a pressure in the range of between 2 bar(g) and 8 bar(g) thereby to generate LP steam.

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