Raw pyrolysis gasoline contains a high content of unsaturated hydrocarbons (olefins and aromatics) making it an excellent source of aromatics and high octane gasoline components, but must be hydrotreated before further processing. Eliminating acetylenes, dienes and aromatic olefins in this pyrolysis gasoline can produce a number of important benefits:
- improve the induction period and colour
- reduce gum content of gasoline blending components
- reduce fouling in the downstream hydrodesulphurisation unit.
HTC™ NI 200 is the leading nickel catalyst for all designs of pyrolysis gasoline hydrogenation units. HTC NI 400 is a higher activity product to handle higher feed rates, more stringent product specifications, higher contaminant levels and higher olefin saturation.
PRICAT™ PD 309/6 is a palladium catalyst formulated for operation in high LHSV situations whereas PRICAT PD 469 is a widely used palladium catalyst.
Both HTC NI products are used in four types to suit different activation situations. Once activated, all forms exhibit equally good performance characteristics.
|Types of HTC NI catalyst|