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World’s largest refinery starts up a novel sulfur-removal system

By Chemical Engineering |

Two sulfur-treatment technologies are being used together for the first time in a facility that is now starting up at Reliance Petroleum’s Jamnagar Export Refinery (Jamnagar, India). Designed by Black & Veatch (B&V, Overland Park, Kan.; www.bv.com), the facility combines three Claus sub-dewpoint Cold-Bed-Adsorption (CBA) sulfur trains with a single, conventional amine-based tail-gas treatment unit to process up to 2,025 metric tons per day (m.t./d) of sulfur. The facility treats acid gases from a new, 600,000-bbl/d crude-processing expansion that makes the refinery the world’s largest, with a total capacity of 1.2 million bbl/d. Reliance wanted its new refinery to be identical to the original refinery, including the sulfur recovery facilities, which were designed by B&V in 1999. However, in the interim, sulfur recovery efficiency (SRE) requirements increased from 98.7% to 99.9%, so it was impossible to install a clone facility. The original refinery’s CBA sulfur recovery complex, which has no tail-gas treatment unit (TGTU), could not achieve higher than 99.2% SRE. “The unique pairing of three CBA trains with a common conventional tail-gas unit emerged as the best solution,” says Angela Slavens,…
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