September 2013

Special Report: Refining Developments

Novel use of sulfiding agent prevents refinery shutdown

When an insufficient supply of acid gas threatened to shut down operations at a US refinery, quick thinking, along with the novel use of a sulfiding agent and a strong supply chain made all the difference.

Frank, T., Lubrizol; Bridges, W., Coastal Chemical Co.

When an insufficient supply of acid gas threatened to shut down operations at a US refinery, quick thinking, along with the novel use of a sulfiding agent and a strong supply chain made all the difference. A sulfiding agent is a chemical additive with a high percentage of sulfur that is typically dosed by the refinery or a third-party service company to help activate hydroprocessing catalysts. Traditionally, a refinery’s need for a sulfiding agent is short term and event based. Hydroprocessing catalysts are typically delivered to refineries in an inert state. They then have to be sulfided to be activated, a process requiring a sulfiding agent. Under usual conditions, the sulfiding chem

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