公开(公告)号：US10041379B2

公开(公告)日：2018-08-07

申请号：US14496917

申请日：2014-09-25

Applicant: ALSTOM Technology Ltd

Inventor： Richard Carroni ,  Henrik Nielsen ,  François Droux

IPC: F01K23/10 ,  F03G6/00 ,  F01K7/22 ,  F22B1/00 ,  F01K23/14

Abstract: The invention relates to a method for operating a combined cycle power plant, which includes a steam turbine powertrain with a high-pressure steam turbine, an intermediate pressure steam turbine and a low-pressure steam turbine, whereby intermediate pressure steam flowing from the exit of the high-pressure steam turbine to the inlet of the intermediate pressure steam turbine is reheated by means of the reheat device, and which is connected to a solar thermal plant, that generates additional solar steam for being used by said steam turbine powertrain. The output of the solar steam generator is used more effectively, and the overall plant performance, flexibility and operability are enhanced by at least part of the additional solar steam reaching the intermediate pressure steam turbine without being reheated in said reheat device.

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：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。