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US 12,388,100 B2Granted
Fuel cell system including catalyst ring anode tail gas oxidizer
AssigneeBloom Energy Corporation
InventorsMichael Petrucha, John Fisher, Nilanjana Basu, Martin Perry, Srikanth Ranganathan, Victor Silva
Life of this patent
Estimating the term…
Abstract
A fuel cell system anode tail gas oxidizer (ATO) includes an inner ATO wall, an outer ATO wall, and a first catalyst ring disposed in a chamber formed between the inner ATO wall and the outer ATO wall. The first catalyst ring includes an inner wall, an outer wall, and a matrix disposed between the inner wall and the outer wall and loaded with an oxidation catalyst.
Claims21
An anode tail gas oxidizer (ATO), comprising:
- an inner ATO wall;
- an outer ATO wall;
- and
- a first catalyst ring disposed in a chamber formed between the inner ATO wall and the outer ATO wall, the first catalyst ring comprising:
- an inner wall that contacts the inner ATO wall;
- an outer wall that contacts the outer ATO wall;
- and
- a matrix that extends from the inner wall to the outer wall, the matrix comprising channels that are loaded with an oxidation catalyst and that extend from a top surface to an opposing bottom surface of the first catalyst ring.
5 more elements
An anode tail gas oxidizer (ATO), comprising:
- an inner ATO wall;
- an outer ATO wall;
- a first catalyst ring disposed in a chamber formed between the inner ATO wall and the outer ATO wall, the first catalyst ring comprising:
- an inner wall;
- an outer wall;
- and
- a matrix disposed between the inner wall and the outer wall and loaded with an oxidation catalyst;
- and
- a second catalyst ring disposed in the chamber below the first catalyst ring, the second catalyst ring comprising:
- an inner wall;
- an outer wall;
- and
- a matrix disposed between the inner wall and the outer wall and loaded with an oxidation catalyst.
10 more elements
A fuel cell system comprising:
- fuel cell stacks;
- a central column comprising an anode recuperator configured to heat fuel provided to the fuel cell stacks using anode exhaust output from the fuel cell stacks, and an anode exhaust cooler disposed configured to heat air provided to the fuel cell stacks using the anode exhaust output from and the anode recuperator;
- an anode tail gas oxidizer (ATO), located between the fuel cell stacks and the central column;
- a splitter configured to provide a first portion of the anode exhaust output from the anode recuperator to the ATO, and to provide a second portion of the anode exhaust output from the anode recuperator to the anode exhaust cooler;
- and
- a vortex generator containing vanes located above the splitter;
- wherein:
- the ATO comprises:
- an inner ATO wall;
- an outer ATO wall;
- a first catalyst ring disposed in a chamber formed between the inner ATO wall and the outer ATO wall, the first catalyst ring comprising:
- an inner wall;
- an outer wall;
- and
- a matrix disposed between the inner wall and the outer wall and loaded with an oxidation catalyst;
- and
- the vortex generator is configured to swirl cathode exhaust output from the fuel cell stacks into the first portion of the anode exhaust flowing from the splitter through the chamber toward the first catalyst ring.
14 more elements
Dependencies are inferred from the claim text.