Organophosphorus compounds as coke inhibitors during naphtha pyrolysis. Effect of benzyl diethyl phosphite and triphenylphosphine sulfide

Journal Article · Tue Sep 01 00:00:00 EDT 1992 · Industrial and Engineering Chemistry Research; (United States)

DOI:https://doi.org/10.1021/ie00009a024· OSTI ID:7026114

Das, P; Prasad, S; Kunztu, D

This paper reports that significant reduction in the rate of coke formation during naphtha pyrolysis was achieved by adding benzyl diethyl phosphite or triphenylphosphine sulfide to the feed. Although the yield of carbon oxides was reduced, there was no effect of these additives on the hydrocarbon yields. Addition of these organophosphorus compounds significantly reduced the concentration of metals, such as iron, nickel, and chromium, incorporated in the coke. A previously proposed model for coke inhibition due to the formation of a passivating metal-phosphorus complex could satisfactorily correlate the data.

• OSTI ID: 7026114
• Journal Information: Industrial and Engineering Chemistry Research; (United States), Vol. 31:9; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
COKE
INHIBITION
NAPHTHA
PYROLYSIS
ADDITIVES
BENZYL RADICALS
CARBON OXIDES
CHROMIUM
COMPLEXES
IRON
NICKEL
ORGANIC PHOSPHORUS COMPOUNDS
PRODUCTION
YIELDS
ARYL RADICALS
CARBON COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL TAR OILS
DECOMPOSITION
DISTILLATES
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
METALS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
RADICALS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
025000* - Petroleum- Combustion