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The new TOTSUCAT process offers a ready-to-use activated catalyst. As catalyst already contains the metal sulfided phase, the start-up procedure now only requires the heating up of the unit to start-of-run conditions.

TOTSUCAT main features

	Catalyst is fully (off-site) sulfided :
	• In the presence of hydrogen, with a sulfur source at appropriate temperature • Stoechiometry is typically between 85 and 100% of corresponding sulfides, depending on catalyst type
	To allow more convenient catalyst handling and reactor loading, sulfided catalyst can be :
	• either passivated (hydrocarbon introduced in porosity) - more dedicated to liquid phase applications, as e. g. gas oils treatments, • or stabilized (gas phase oxidative passivation) - more dedicated to Light Ends or gas phase applications. In some specific cases, Eurecat can also deliver sulfided unpassivated products.
	Catalyst once passivated :
	• Is non-pyrophoric • Is self-heating with behaviour similar to SULFICAT • Is classified as UN 3190 • Can be transported in metallic drums or containers
	Catalyst once stabilized :
	• Is non-pyrophoric • Is self-heating • Is classified as UN 3190 • Can be transported in metallic drums or containers

The process, ideally suited to naphtha pretreaters or other low sulfur feed treatments, can however be used in all hydrotreating units.

TOTSUCAT handling and storage recommendation, as well as loading guidelines for stabilized, passivated and unpassivated material.

TOTSUCAT applications

	HYDROPROCESSING :
	• Hydrocrackers, Lube hydrotreaters • Naphtha hydrotreaters • Distillates and resid units
	SPECIAL UNITS :
	• Petrochemical units • Tail gas units • Hydrogen plants + make up batches for many applications

The choice between SULFICAT and TOTSUCAT will be made taking into account the individual unit operating parameters.