Fuel feed system for a gasifier and method of gasification system start-up
AssigneeGeneral Electric Company
InventorsThomas Frederick Leininger, Aaron John Avagliano, John Saunders Stevenson, John Duckett Winter
Life of this patent
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Abstract
A method of start-up for a gasification system includes establishing a flow of a start-up fuel external to the gasifier prior to ignition of the gasifier. The method also includes establishing a start-up liquid feed external to the gasifier during gasifier start-up. The method further includes channeling the start-up liquid feed and the start-up fuel to the gasifier during gasifier start-up.
Claims15
A method of start-up for a gasification system including a gasifier, said method comprising:
- establishing a flow of a start-up fuel external to the gasifier prior to ignition of the gasifier, including circulating a particulate fuel within a flow circuit of the gasification system;
- establishing a start-up liquid feed external to the gasifier during gasifier start-up;
- channeling the start-up liquid feed and the start-up fuel to the gasifier during gasifier start-up;
- and
- replacing a quantity of a first carrier gas used in conveying the particulate fuel to the gasifier with an alternate carrier gas.
A method of start-up for a gasification system including a gasifier, said method comprising:
- establishing a flow of a start-up fuel external to the gasifier prior to ignition of the gasifier, including stabilizing a flow of natural gas within the gasification system;
- establishing a start-up liquid feed external to the gasifier during gasifier start-up;
- channeling the start-up liquid feed and the start-up fuel to the gasifier during gasifier start-up;
- adding a quantity of particulate fuel into the natural gas;
- and
- replacing a quantity of natural gas used in conveying the particulate fuel to the gasifier with an alternate carrier gas.
A method of start-up for a gasification system including a gasifier, said method comprising:
- establishing a flow of a start-up fuel external to the gasifier prior to ignition of the gasifier, including supplying a start-up carrier gas to a flow circuit of the gasification system and channeling a particulate fuel from a storage bin into the start-up carrier gas to form the flow of start-up fuel;
- establishing a start-up liquid feed external to the gasifier during gasifier start-up;
- and
- channeling the start-up liquid feed and the start-up fuel to the gasifier during gasifier start-up.
A method of start-up for a gasification system including a gasifier, said method comprising:
- establishing a flow of a start-up fuel external to the gasifier prior to ignition of the gasifier;
- establishing a start-up liquid feed external to the gasifier during gasifier start-up, including forming the start-up liquid feed from a fresh water makeup;
- channeling the start-up liquid feed and the start-up fuel to the gasifier during gasifier start-up;
- and
- replacing the start-up liquid feed channeled to the gasifier with a post-start-up slurry comprising at least one of unconverted carbon recovered from the gasifier and a slag additive.
Dependencies are inferred from the claim text.