Preparation of sorbent for SO2 Scrubber system
AssigneeAlstom (Switzerland) Ltd
InventorsWayne S. Counterman, Shin G. Kang, Srivats Srinivasachar
Life of this patent
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Abstract
A sorbent addition system for a steam generator system having a boiler, an air preheater, a scrubber, an air duct providing fluid communication between the air preheater and the boiler, a first flue gas duct providing fluid communication between the boiler and the air preheater, and a second flue gas duct providing fluid communication between the air preheater and the scrubber. The sorbent addition system comprises a calciner having a calciner exhaust which provides fluid communication with either the first or second flue gas ducts. A limestone addition subsystem and a fuel addition subsystem are in fluid communication with the calciner.
Claims32
A sorbent addition system for a steam generator system having a boiler, an air preheater, a scrubber, an air duct providing fluid communication between the air preheater and the boiler, a first flue gas duct providing fluid communication between the boiler and the air preheater, and a second flue gas duct providing fluid communication between the air preheater and the scrubber, the boiler producing a flue gas containing sulfur, the sorbent addition system comprising:
- a calciner including a calciner exhaust adapted for providing fluid communication with a one of the first or second flue gas ducts;
- a limestone addition subsystem in fluid communication with the calciner;
- and
- a fuel addition subsystem in fluid communication with the calciner.
A sorbent addition system for a steam generator system having a boiler, an air preheater, a scrubber, an air duct providing fluid communication between the air preheater and the boiler, a first flue gas duct providing fluid communication between the boiler and the air preheater, and a second flue gas duct providing fluid communication between the air preheater and the scrubber, the boiler producing a flue gas containing sulfur, the sorbent addition system comprising:
- a calciner including a calciner exhaust adapted for providing fluid communication with a one of the first or second flue gas ducts;
- an air inlet duct in fluid communication with the calciner, the air inlet duct being adapted for receiving a supply of hot combustion air from the air duct;
- a pulverizer in fluid communication with the calciner;
- a first bulk material storage and metering device in fluid communication with the pulverizer;
- a bulk limestone receiving device for depositing bulk limestone in the first bulk material storage and metering device;
- a fuel addition subsystem in fluid communication with the calciner;
- and
- a controller in electrical communication with the first bulk material storage and metering device and the fuel addition subsystem.
Dependencies are inferred from the claim text.