Three new cogeneration plants being built at refineries or petrochemical works on the Iberian Peninsula will each feature a Frame 6B gas turbine from GE Energy. The Frame 6B is one of the most versatile and widely used gas turbines ever manufactured, says the company, with more than 1,100 units in service or on order worldwide. Further, nearly a third of all 6Bs in operation are being used for cogeneration.

First, DETISA, an energy supplier owned by Spanish oil company CEPSA, has selected GE Energy’s gas turbine technology for a new cogeneration project at the Gibraltar-San Roque refinery in San Roque, near Cádiz, Spain. The company will supply a Frame 6B gas turbine-generator for the Lubrisur Cogeneration Plant, which will help to meet the increasing energy requirements of the refinery, with excess electricity to be sold to the Spanish grid. The plant has a capacity of 42 MW of power and will also produce steam to be used for refinery processes.

Burning natural gas, the gas turbine will employ a dry low NOx system that will meet the region’s strict environmental regulations. Commercial operation of the Lubrisur project is scheduled to begin by the end of 2010.

Repsol YPF, Spain’s largest oil company, has also turned to Frame 6B gas turbine technology for a new, 42 MW cogeneration plant that is part of the expansion of Repsol’s oil refinery located 13 km east of the city of Cartagena, Spain. This will be the 14th Frame 6B that GE has provided to Repsol and its affiliates. The unit will be maintained under an existing service agreement between the two companies.

The Cartagena refinery is connected by oil pipeline to the Puertollano refinery, and has total processing capacity of 5.5 million tonnes of crude oil per year. When completed, the expansion will considerably increase that capacity. Plans are for surplus electricity to be sold to the local grid.

The turbine will also feature GE’s dry low NOx combustion technology, which limits gas turbine nitrogen oxide (NOx) emissions to 15 parts per million, says GE. The project is expected to begin commercial service in 2011.

Finally, the same Frame 6B gas turbine technology has been selected for a cogeneration plant being built as part of a new project in the Sines petrochemical industrial park on Portugal’s Alentejo coast. When completed, the 40 MW cogeneration facility will support a pure tereftalic acid (PTA) producing plant that will have a production capacity up to 700,000 tonnes per year.

The new turbine has already been delivered to the Sines site, south of Lisbon, with commercial operation scheduled for early next year. Plans are to use natural gas as the primary fuel source.