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.