PROJECTS

Foster Wheeler
Development Center Project

Florida Power Corporation (FPC) demonstrated a 12 million Btu/hr “CAIRE” gasifier-combustor at the Foster Wheeler Development Center (FWDC)in Livingston, New Jersey. FPC funded the research project. Florida Power’s Ashworth, currently with ClearStack, and FWDC designed, installed, and tested the gasifier-combustor.

The 1st Stage (gasifier) was run at an air: fuel stoichiometric ratio (SR) of around 0.60 and the 2nd stage was run with an SR of 1.10 to 1.20. Lime and limestone were fed with the fired pulverized coal to capture sulfur.

With the two stage technique, sulfur dioxide (SO2) reductions up to 60% and nitrogen oxide (NOX) emissions of 0.25 lb/million Btu were achieved firing Eastern Bituminous coal.

DHS Lincoln
Developmental Center Project

A 40 million Btu/hr gasifier-combustor system was retrofitted to a coal-fired stoker at the Department of Human Services (DHS) Lincoln Developmental Center in Lincoln, Illinois.

ClearStack, IL Clean Coal Review Board, IL Department of Commerce and Community Affairs, Illinois Development Finance Authority, Electric Power Research Institute, Detroit Edison, Dynegy, Allegheny Energy Supply, IL Department of Human Services and Midrex Technologies, Inc. funded the demonstration of the Ashworth Gasifier-Combustor. ClearStack and Codaco Engineering designed and completed the retrofit at Lincoln.

Sulfur dioxide emissions were reduced by 72%, NOX emissions were reduced down to 0.095 lb/106 Btu and mercury emissions by 93 to 100%.

Enhanced Oil Recovery
Ashworth Gasifier OTSG Project

A design was completed by ClearStack, Codaco Engineering. and ITS Engineered Systems for the use of the Ashworth Gasifier-Combustor with a Once Through (50 x 106 Btu/hr) Steam Generator (OTSG) for an Enhanced Oil Recovery application.

Dynegy Engineering Study - Ashworth Gasifier-Combustor Retrofit Technical/Economic Analyses for Vermilion Unit #2. Study by ClearStack, Midrex Technologies and Dynegy. Vermillion Unit #2 is a Combustion Engineering tangentially fired boiler.

Ameren Engineering Study - Assessment for
Ashworth Gasifier - Combustor System Retrofit to Hutsonville Boiler #6. Study completed by ClearStack, Promecon, Sargent and Lundy, United Conveyor, Alstom Power, and Boiler #6 is a 75 MWe CE tangentially fired boiler.