DryFining™ Project

Great River Energy developed the DryFining™ technology in-house and implemented it in December of 2009 at the 1,200 MW Coal Creek Station in North Dakota. DryFining™ simultaneously dries and refines low-rank coal in order to emit fewer emissions. The process improved the overall performance of the plant by almost 4 percent and has a lower initial cost of installation and reduces expenses by more than $20 million annually in fuel, auxiliary power and other O&M costs.

ICI was retained for the mechanical work-scope in late 2007 and worked through 2009 when the project was commissioned.  Continued improvement work-scopes were performed by ICI through 2011.  In addition to the commercial construction of the first of its kind technology, ICI also installed the original prototype in 2006 that proved the economic benefit of the innovative process.

• Pre-construction demolition
• Pre-construction electrical
• 11,000 feet of process piping
• 500 tons of process ductwork
• 200 tons of exhaust ductwork and stacks
• Process tie-ins
• Furnish and install dust collection ductwork and exhaust stacks
• Furnish and install of utility piping
• Equipment installation including:
• Assembly and erection of 8 coal drying units
• Assembly and erection of 8 coal dryer dust collectors
• 16 process pumps
• 88 process heat exchangers
• 4 nuisance dust collectors
• 21 process fans
• 6 central vacuum systems
• Over 400,000 man-hours expended