Story

SunCoke Energy's heat-recovery technology converts waste heat into steam and electricity. Benzene and other pollutants generated in the long hours of baking coal are incinerated inside the coke ovens, eliminating the need for a chemical byproducts plant and disposal of hazardous waste. Sole flues and hot gas ducts provide sufficient time, temperature and turbulence to ensure complete destruction of virtually all organic compounds, creating hot inert gasses. The negative pressure employed by SunCoke Energy's ovens pulls air into the oven through air ports on each oven door and sole flue, and the movement of air through the oven maximizes temperature. Excess heat is converted to steam and/or electricity through heat recovery steam generators and steam turbines. A one million ton-per-year coke facility can generate approximately 100MW of electricity.¹

Lambert Engineers, Inc. engineered the heat recovery system for this 550,000 ton-per-year coke facility. The heat recovery process produced 450,000 pounds of steam per hour which was delivered approximately one-half mile to a Sunoco phenol manufacturing facility.²

Scope of work included process and controls development and specification of steam generators and air quality controls for the heat recovery system. Balance of plant engineering and construction support for the heat recovery facility was also provided.

Notes:

¹ SunCoke Energy (2008). http://www.suncoke.com/superior technology_power.html.

² SunCoke Energy (2007). http://www.suncoke.com/newprojects.html.

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³ SunCoke Energy (2008). http://www.suncoke.com/photogallery/ohio2/index.html.