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Saudi Aramco is building the world’s largest integrated gasification combined cycle (IGCC) power plant alongside its planned 400,000 b/d refinery at Jazan. The crucial link between refinery and IGCC has now been made, with Aramco awarding the contract for the refinery’s air separation unit – another of the world’s largest.
The IGCC will have 4GW total capacity, of which 2.4GW will be delivered to the national transmission grid and the remainder will be used to power the refinery and associated facilities. The air separation unit (ASU) itself will require a 500MW power supply.
The main fuel for the IGCC will be produced from 90,000 b/d of vacuum residue from the refinery and 20,000 tons/day of oxygen from the ASU (see p12). These will be fed into gasifiers to produce synthesis gas – syngas, a mixture of hydrogen and carbon dioxide – for burning in the IGCC.
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