17/07/2013 21:57MAN Diesel & Turbo SE - CENTRIFUGAL COMPRESSORS FOR RECYCLED GAS

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Hydrogen Desulfurization Plant for a Refinery in Italy12.05.2003 - In 2001, a customer in Italy ordered two centrifugal compressors for recycled gasfrom MAN Turbo for a refinery. The scope of the order included gear units and oil systems. Thecompressors are driven by electric motors. Commissioning is scheduled for 2003.

Process description

To reduce the naturally occurring sulfur content in natural gas, desulfurization has to be carriedout in a hydrofiner during distillation (liquid gas, petrol, diesel fuel, heating oil). To do this, thedistillate is mixed with hydrogen, heated and then routed to a reactor filled with a catalyst. Thisproduces hydrogen sulfide. The cleaned product plus the hydrogen sulfide and the remaininghydrogen are separated again. The hydrogen is used as a basic material for other processes.The hydrogen sulfide is converted in downstream Claus plants into elementary sulfur, which canbe used primarily for the chemicals industry or also as sulfuric acid in the fertilizer industry.

Customer benefit

EU directives on the reduction of environmental pollution that come into force in 2005 will tightenthe requirements in respect of fuels. Compressors for recycled hydrogen gas to reduce thepollutant content are accordingly being integrated increasingly into the refinery process. Witheffect from 2011, all refineries in Europe must guarantee a sulphur content of less than 10 ppmin fuels.

Technical data

17/07/2013 21:57MAN Diesel & Turbo SE - CENTRIFUGAL COMPRESSORS FOR RECYCLED GAS

Page 2 of 2http://www.mandieselturbo.com/1013168/PrimeServ/PrimeServ-Referen…rences/Compressors/Centrifugal-Compressors-for-Recycled-Gas.html

Technical dataCentrifugal compressor for recycled gasType RV035 / 04 RV035 / 05

Volumetric flow [m³/h] 6,000 3,000

Suction pressure [bar (a)] 20 25

Discharge pressure [bar (a)] 30 40

Speed [rpm] 2,000 1,200

All data provided on this site is for information purposes only, explicitly non-binding and subjectto changes without further notice.

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