Abstract:
The incremental yield of hydrocarbons having five or more carbon atoms in a cracked product from a thermal cracking process is increased by contacting or treating the tubes of a thermal cracking furnace with a composition comprising tin and silicon.
Abstract:
Spalling of coke produced during the thermal cracking of hydrocarbon is promoted by contacting or treating the tubes of a thermal cracking furnace with a composition having an absence of silicon and comprising tin.
Abstract:
The energy required to achieve a given conversion in the thermal cracking of hydrocarbons is reduced by contacting or treating the tubes of a thermal cracking furnace with a composition comprising tin and silicon.
Abstract:
A reaction mixture comprising an aromatic hydrocarbon and hydrogen is contacted under hydroalkylation conditions with a composition comprising at least one rhenium compound supported on a calcined, acidic, nickel and rare earth-treated crystalline zeolite.
Abstract:
A novel method for treating the radiant tubes of a fired pyrolysis heater with an antifoulant composition for inhibiting the formation and deposition of coke thereon. Such novel method includes introducing the antifoulant into the crossover conduit between the convection tubes and radiant tubes of the fired pyrolysis heater.
Abstract:
For a given percentage decomposition, the decomposition temperature of an organosilicon compound is reduced by admixing with the organosilicon compound a decomposition promoting organotin compound. The amount of decomposition promoting organotin compound admixed with the organosilicon compound is sufficient to effectively lower the decomposition temperature of the organosilicon required for a given percentage decomposition.