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20:25 on Monday
30 December 2002

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Innovative compressor design cuts Chinese processing costs



Peter Brotherhood - the Peterborough, UK, based supplier of engineered equipment for the petrochemical and process industries - has just delivered two innovative compressor packages to a Chinese refinery under a £1.52 million ($2.2 million) contract.

The machines were ordered by Sinopec International E & M Trade Company for installation at the Changling Petrochemical Company refinery at Changling in China's southern Hunan province.

Each package is based around what appears to be a single four-cylinder reciprocating compressor - but two cylinders of each machine will handle hydrogen make-up gas whilst the other two simultaneously handle hydrogen recycle gas for diesel fuel hydrofining.

Each compressor is designed to meet the refinery’s total make-up and recycle gas requirement. Having two such machines will therefore ensure continuous availability for this critical application because one machine can be on stand-by while the other is operating.

Conventionally this type of requirement would be met with two medium-sized reciprocating compressors to handle make-up gas (one running and one on stand-by). The recycle gas would be handled by a single centrifugal compressor, which would have to be backed up with a full set of spares (including a spare rotor).

Opting for Peter Brotherhood’s solution of two large reciprocating compressors, each capable of handling the full make-up and recycle load, will provide a higher level of reliability at a lower initial cost and with lower power demand than the more conventional solution.

These machines are larger versions of two supplied for the same application at Yanshan Refinery during 2000.

February 2002

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