Atomized polysulfide used in ethylene steam cracker

Details Atomized polysulfide used in ethylene steam cracker Atomized polysulfide used in ethylene steam cracker

2006-12-26

2006-12-26

Caldarola, Glenn (Department: 1764)

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

By c content reduction, e.g., cracking, etc.

C585S648000, C585S950000

Reexamination Certificate

active

07154016

ABSTRACT:
Dialkyl polysulfides can be added to hydrocarbon gas fed streams for alkene steam crackers for the petrochemical industry. The polysulfides act as sulfiding agents for surfaces of the steam crackers and thereby reduce coking and CO generation. A preferred polysulfide is a di-t-butyl polysulfide. Such compounds tend to have lower vapor pressure, reasonable viscosities, and are relatively nonflammable as compared to the lower molecular weight sulfur containing compounds.

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Search Report from corresponding PCT International Publication No. WO 02/081595 published Oct. 17, 2002.

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