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Capacity to double for an oil-shale process

By Chemical Engineering |

Outotec GmbH (Oberursel, Germany), a 100% daughter company of Outotec Oy (Helsinki, Finland; www.outotec.com) has received a €109-million contract for the design, delivery, construction and commissioning of a new oil-shale processing plant to be built in Narva, Estonia for Eesti Energia (Tallin, Estonia; www.energia.ee). Scheduled for commissioning in early 2012, the facility will process over 2.2-million metric tons (m.t.) of oil shale per year, producing approximately 290,000 m.t./yr of crude oil. The plant will be the first commercial application of the Enefit-280 process, a modified Galoter process developed by the two companies. The solid heat carrier process (Galoter process) was first introduced in 1953, and scaled up to 140 m.t./h (Enefit 140 process) in the 1980s. Currently, two Enefit-140 units, operated by Eesti Energia Oil & Gas in Narva, are converting about 1.5-million m.t./yr of oil shale into about 160,000 m.t./yr of oil. In the Enefit 140 process, oil shale is first ground to a size of less than 20 mm, dried in a lift-pipe, then mixed with hot (800°C) ash produced by combustion of spent oil shale in a separate furnace. The mixture is then pyrolyzed in a retort at 520°C. The pyrolysis gas is then separated…
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