Premium
Effect of selective oxidation and sulphur/phosphorus‐containing compounds on coking behaviour during light naphtha thermal cracking
Author(s) -
Bao Binbin,
Liu Jinglei,
Xu Hong,
Wan Shun,
Zhang Weifeng
Publication year - 2017
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.22809
Subject(s) - naphtha , sulfur , cracking , raman spectroscopy , phosphorus , graphite , alloy , coke , chemistry , carbon fibers , materials science , chemical engineering , metallurgy , organic chemistry , catalysis , composite material , physics , composite number , optics , engineering
Abstract The investigation was aimed at evaluating the effect of selective oxidation and sulphur/phosphorus‐containing compounds on coking behaviour at the surface of HP40 alloy during thermal cracking of light naphtha. The surface morphology and composition of the selectively oxidized alloy were characterized by SEM, EDX, and XRD. Coking tests show that the coking rate of blank alloy decreased with sulphur/phosphorus‐containing compounds, while the effect of sulphur/phosphorus‐containing compounds on coking rate for selectively oxidized alloy is complex, and a mass concentration of µg/g results in the lowest coking rate. The morphology and microstructure of cokes were investigated by SEM and Raman spectra. SEM and Raman spectra analyses indicated that either selective oxidation or sulphur/phosphorus‐containing compounds resulted in more disordered graphite structures and amorphous carbon.