Additive, useful for reducing the formation of coke and carbon monoxide in thermal cracking unit and heat exchangers, comprises disulfide comprising diethyldisulfide, dipropyldisulfide or dibutyldisulfide

摘要

Additive for reducing the formation of coke and carbon monoxide in thermal cracking unit and heat exchangers, comprises a disulfide comprising diethyldisulfide, dipropyldisulfide or dibutyldisulfide. Independent claims are included for: (1) a process for reducing the coking and/or carbon monoxide on metallic walls of a hydrocarbon cracking reactor or other organic compounds and on the metallic walls of a heat exchanger placed behind the cracking reactor, comprising contacting the metallic surfaces with the organic substance to be cracked, which are pretreated with a flow of vector fluid containing the additive at 300- 1100[deg] C for 0.5-12 hours; and (2) a process of hydrocarbon cracking and/or other organic compounds, comprising adding the additive during cracking in the hydrocarbon charge, organic compounds, before cracking in a hydrocarbon liquid charge, other organic compounds before its preheating and its vaporizing and/or during the preheating phase of the liquid charge.