Experience in sulphur capture in the 20 MW Chatham CFB unit

Publ by American Soc of Mechanical Engineers (ASME)

View this document at University of New Brunswick: Experience in sulphur capture in the 20 MW Chatham CFB unit

Document Record
Creator Pickles, E. R.
McCarthy, R.
Couturier, M. F.
Title Experience in sulphur capture in the 20 MW Chatham CFB unit
Published Publ by American Soc of Mechanical Engineers (ASME)
Identifier oai_dspace.hil.unb.ca_1882_23349
Subject Coal Combustion--fluidized Beds
Combustors--fluidized Bed
Fossil Fuel Power Plants--thermal Effluents
Limestone--applications
Sulfur Dioxide--adsorption
Calcium Sulfur Feed Ratio
Chatham Cfb Project
Circulating Fluidized Bed Boiler
Sulfur Capture
Boilers
Notes Conference Proceedings
Contributor University of New Brunswick
Description The 20 MW Circulating Fluidized Bed Boiler Project at Chatham, New Brunswick, Canada, is a demonstration facility developed with the objective of establishing this technology in Canada. The sulphur capture efficiency has been below expectations hence a major effort is to ascertain the reasons for this condition and institute corrective action. The paper outlines early operating experience at the plant with different limestones and the results obtained to date. The major factor associated with sulphur capture is elutriation of fine calcium oxide particles which are not effectively sulphated. The impact of varying limestone sizing to reduce fines is not conclusive. Future design modifications are noted together with additional testing to be carried out in the combustor.
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