公开(公告)号：US20150007575A1

公开(公告)日：2015-01-08

申请号：US14317723

申请日：2014-06-27

Applicant: ALSTOM Technology Ltd.

Inventor： Paul Drouvot ,  François Droux ,  Klara Berg

IPC: F01K17/02 ,  F02C7/224

CPC classification number: F01K17/025 ,  F01K23/10 ,  F02C6/18 ,  F02C7/224 ,  Y02E20/16

Abstract: The invention refers to a CCPP comprising a gas turbine, a water steam cycle with a steam turbine and a HRSG with at least two pressure levels, and a fuel preheater for preheating the fuel of the gas turbine. The fuel preheater includes a first heat exchanger for preheating the fuel to a first elevated temperature, which is connected to a feed water line from a pressure level of the HRSG, which is below the highest HRSG pressure level, and a second heat exchanger for further preheating the fuel gas to a second elevated temperature, which is connected to the high pressure feed water with the highest pressure level of the HRSG. The disclosure further refers to a method for operating a CCPP with such a fuel preheater.

Abstract translation: 本发明涉及一种CCPP，其包括燃气轮机，具有蒸汽轮机的水蒸汽循环和具有至少两个压力水平的HRSG，以及用于预热燃气轮机的燃料的燃料预热器。 燃料预热器包括用于将燃料预热到第一高温的第一热交换器，该第一升高温度从低于最高HRSG压力水平的HRSG的压力水平连接到给水管线，以及用于进一步的第二热交换器 将燃料气体预热到第二高温，其连接到具有最高压力水平的高压给水。 本公开还涉及用这种燃料预热器操作CCPP的方法。

公开(公告)号：US10006313B2

公开(公告)日：2018-06-26

申请号：US14317723

申请日：2014-06-27

Applicant: ALSTOM Technology Ltd

Inventor： Paul Drouvot ,  François Droux ,  Klara Berg

IPC: F01K17/02 ,  F02C7/224 ,  F01K23/10 ,  F02C6/18

CPC classification number: F01K17/025 ,  F01K23/10 ,  F02C6/18 ,  F02C7/224 ,  Y02E20/16

Abstract: The invention refers to a CCPP comprising a gas turbine, a water steam cycle with a steam turbine and a HRSG with at least two pressure levels, and a fuel preheater for preheating the fuel of the gas turbine. The fuel preheater includes a first heat exchanger for preheating the fuel to a first elevated temperature, which is connected to a feed water line from a pressure level of the HRSG, which is below the highest HRSG pressure level, and a second heat exchanger for further preheating the fuel gas to a second elevated temperature, which is connected to the high pressure feed water with the highest pressure level of the HRSG. The disclosure further refers to a method for operating a CCPP with such a fuel preheater.

公开(公告)号：US20150113939A1

公开(公告)日：2015-04-30

申请号：US14523085

申请日：2014-10-24

Applicant: ALSTOM Technology Ltd

Inventor： Klara BERG ,  Mariah Couzzi-Carneiro ,  Paul Drouvot ,  Torbjörn Stenström

IPC: F01K17/02

CPC classification number: F01K17/025 ,  F01K17/00 ,  F01K23/10 ,  Y02E20/14 ,  Y02E20/16

Abstract: A CCPP includes a gas turbine, a HRSG, a steam turbine a flash tank and first and second supply lines. The gas turbine, the HRSG and the steam turbine are interconnected to generate power. The gas turbine may include an air preheating system to preheat the air supplied in the gas turbine to enable expedite combustion therein. The flash tank is fluidically connected at a cold end of the HRSG to extract waste hot water from the cold end. Further, the first supply line is configured to interconnect the flash tank and the steam turbine to supply of flash steam to the steam turbine. Furthermore, the second supply line is configured to interconnect the flash tank and the air preheating system to supply hot flash condensate thereto.

Abstract translation: CCPP包括燃气轮机，HRSG，蒸汽轮机，闪蒸罐以及第一和第二供应管线。 燃气轮机，HRSG和蒸汽轮机相互连接以产生动力。 燃气轮机可以包括空气预热系统，以预热在燃气轮机中供应的空气，以便在其中快速燃烧。 闪蒸罐在HRSG的冷端流体连接，以从冷端抽取废热水。 此外，第一供应管线被配置成互连闪蒸罐和蒸汽轮机以向蒸汽轮机供应闪蒸。 此外，第二供应管线被配置成将闪蒸罐和空气预热系统相互连接，以向其提供热闪蒸冷凝物。