US 10,320,016 B2Granted

High-temperature fuel cell system

AssigneePanasonic Intellectual Property Management Co., Ltd.

InventorsOsamu Sakai, Kunihiro Ukai, Yasushi Kaneko, Shigenori Onuma, Takashi Kakuwa

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Abstract

A high-temperature fuel cell system includes a fuel cell that includes an anode and a cathode and that generates power by using a fuel gas and an oxidant gas, a fuel-gas path along which the fuel gas flows, an oxidant-gas path along which the oxidant gas flows, an anode-off-gas path along which an anode off-gas flows, a cathode-off-gas path along which a cathode off-gas flows, a combustion space in communication with the anode-off-gas path and the cathode-off-gas path and in which the anode off-gas and the cathode off-gas are burned, a flue-gas path along which a flue gas flows, a cathode-off-gas branch portion disposed on the cathode-off-gas path between the combustion space and the cathode and at which some of the cathode off-gas is branched from the cathode-off-gas path, and a first heat exchanger that enables heat exchange between the oxidant gas, the flue gas, and the cathode off-gas.

Claims9

Dependent claims

A high-temperature fuel cell system comprising:

an inner wall and an outer wall surrounding the inner wall;
a partition wall disposed so as to partition a space on inside of the inner wall into an upper area and a lower area;
a fuel cell that is disposed in the lower area and includes an anode and a cathode and that generates power by using a fuel gas and an oxidant gas;
a fuel-gas path passing through the partition wall, along which the fuel gas flows;
an oxidant-gas path formed by the inner wall and the outer wall, along which the oxidant gas flows;
an anode-off-gas path along which an anode off-gas discharged from the anode flows;
a cathode-off-gas path along which a cathode off-gas discharged from the cathode flows;
a combustion space that is disposed in the upper area and is in communication with the anode-off-gas path and the cathode-off-gas path and in which the anode off-gas and the cathode off-gas are burned;
a flue-gas path along which a flue gas discharged from the combustion space flows;
a cathode-off-gas branch portion that is disposed on the cathode-off-gas path between the combustion space and the cathode and at which some of the cathode off-gas is branched from the cathode-off-gas path;
and
a first heat exchanger that enables heat exchange between the oxidant gas, the flue gas, and the cathode off-gas that has passed through the cathode off-gas branch portion.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/590,859Filed 9 May 2017
Priority: JP 2016-10026619 May 2016
Published: US 2017/0338505 A123 Nov 2017
Granted: 11 Jun 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

H01M 8/0618
From carbon-containing material: reforming processes, e.g. autothermal, partial oxidation or steam reforming
C01B 3/06
Production of hydrogen; Production of gaseous mixtures containing hydrogen: by reaction of inorganic compounds containing electro-positively bound…
C01B 3/384
Using catalysts: with external heating of the catalyst
H01M 8/04022
Heat exchange using gaseous fluids; Heat exchange by combustion of reactants: heating by combustion

Family

US 2017/0338505 A1Pre-grant publication · published 23 Nov 2017
US 10,320,016 B2This patent

From the US filing history. Foreign family members aren’t listed.

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