Via a joint venture with ARB Inc., we performed engineering, procurement and construction (EPC) services for a 30-megawatt (MW) cogeneration facility to supply power and steam to the client’s existing refinery.
The major components of the facility consist of a GE LM2500+G4 Gas Turbine and a Rentech single pressure heat recovery steam generator (HRSG). The net electrical output is a nominal 30 MW with a steam production of approximately 115,000 pounds/hour. Nitrogen oxide (NOx) and carbon monoxide (CO) emissions are controlled by using dry low emissions (DLE) combustion technology, CO catalyst and an selective calalytic reduction (SCR) in the HRSG.
The cogen facility connects to the refinery main 34.5-kV substation providing power to grid, but it also allows the refinery to island away and resynchronize back to the local utility.
Natural gas fuel is supplied from the existing natural gas pipeline supplier’s metering yard and is conditioned for supply to the turbine. Water is supplied from the existing facility for steam cycle makeup and service water.
A new distributed control system (DCS) safety instrumented system (SIS) for the cogeneration unit is tied into the refinery plant controls and a new console will be installed in the existing utility control room.