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Power generation system

A power generation system, fuel cell technology, applied in the direction of circuits, fuel cells, electrical components, etc., can solve problems such as the inability to maintain the SOFC operation state, and achieve the effect of stable operation

Active Publication Date: 2016-11-09
MITSUBISHI POWER LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, the pressure of the air compressed by the compressor fluctuates according to the operating state of the gas turbine, so the pressure of the compressed air supplied to the SOFC also fluctuates according to the operating state of the gas turbine, and it may not be possible to maintain a stable operating state of the SOFC.

Method used

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Examples

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Embodiment 1

[0028] The power generation system of Example 1 is a triple combined cycle (Triple Combined Cycle: registered trademark) composed of a solid oxide fuel cell (hereinafter referred to as SOFC), a gas turbine, and a steam turbine. This triple combined cycle can achieve extremely high power generation efficiency by installing SOFC on the upstream side of gas turbine combined cycle power generation (GTCC), and can generate power in three stages: SOFC, gas turbine, and steam turbine.

[0029] figure 1 is a schematic diagram showing compressed air supply lines in the power generation system according to Embodiment 1 of the present invention, figure 2 It is a schematic configuration diagram showing the power generation system of the first embodiment.

[0030] In embodiment 1, such as figure 2 As shown, the power generation system 10 has a gas turbine 11 , a generator 12 , an SOFC 13 , a steam turbine 14 and a generator 15 . This power generation system 10 is configured such that ...

Embodiment 2

[0058] image 3 It is a schematic diagram showing the compressed air supply line in the power generation system according to the second embodiment of the present invention. In addition, the basic structure of the power generation system of this embodiment is basically the same as that of the above-mentioned embodiment 1. figure 2 In the description, members whose functions are the same as those in the above-mentioned first embodiment will be given the same reference numerals, and detailed description will be omitted.

[0059] Such as figure 2 and image 3 As shown, in the power generation system of Embodiment 2, the SOFC 13 is connected to the compressed air supply device (compressed air supply part) 81 through the second compressed air supply line 31, so that the compressed air A2 compressed by the compressed air supply device 81 can be supplied to the air The lead-in part of the pole. In other words, an independently drivable compressed air supply device 81 separate fr...

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Abstract

This power generation system is provided with: a gas turbine (11) having a compressor (21), a combustor (22) and a turbine (23); a first compressed air supply line (26) that supplies compressed air, which has been compressed by the compressor (21), to the combustor (22); a solid oxide fuel cell (SOFC) (13) having an air electrode and a fuel electrode; a compressed air supply device (61) capable of generating compressed air; and a second compressed air supply line (31) that supplies compressed air, which has been compressed by the compressed air supply device (61) to the SOFC (13). The fuel cell can thus be stably operated regardless of the operating state of the gas turbine.

Description

[0001] This application is a divisional application of the application number "201380056427.7", the application date is October 28, 2013, and the invention name is "power generation system". technical field [0002] The present invention relates to a power generation system combining a fuel cell, a gas turbine, and a steam turbine. Background technique [0003] As we all know, a solid oxide fuel cell (Solid Oxide Fuel Cell: hereinafter referred to as SOFC) is a high-efficiency fuel cell with wide applications. In this SOFC, since the operating temperature is increased to increase ion conductivity, the air discharged from the compressor of the gas turbine can be used as the air (oxidant) supplied to the air electrode side. In addition, SOFC can use unusable high-temperature fuel as a fuel for a combustor of a gas turbine. [0004] Therefore, for example, as described in Patent Document 1 below, various power generation systems combining SOFC, gas turbines, and steam turbines...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K13/02F01K23/10F02C3/20F02C3/30F02C6/00F02C6/18H01M8/04111H01M8/04082H01M8/12
CPCF01K13/02F01K23/10F02C3/20F02C3/30F02C6/00F02C6/18H01M8/04111H01M8/04201H01M2008/1293H01M2250/402Y02B90/10Y02E20/16Y02E60/50F02C6/04
Inventor 中本行政藤田和德
Owner MITSUBISHI POWER LTD
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