Thermal Decomposition of Sulfur Compounds and their Role in Coke Formation during Steam Cracking of Heptane
Natalia Olahova
Ghent University, Laboratory for Chemical Technology, Ghent, Belgium.
Search for more papers by this authorMarko R. Djokic
Ghent University, Laboratory for Chemical Technology, Ghent, Belgium.
Search for more papers by this authorRuben Van de Vijver
Ghent University, Laboratory for Chemical Technology, Ghent, Belgium.
Search for more papers by this authorNenad D. Ristic
Ghent University, Laboratory for Chemical Technology, Ghent, Belgium.
Search for more papers by this authorGuy B. Marin
Ghent University, Laboratory for Chemical Technology, Ghent, Belgium.
Search for more papers by this authorMarie-Françoise Reyniers
Ghent University, Laboratory for Chemical Technology, Ghent, Belgium.
Search for more papers by this authorCorresponding Author
Kevin M. Van Geem
Ghent University, Laboratory for Chemical Technology, Ghent, Belgium.
Ghent University, Laboratory for Chemical Technology, Ghent, Belgium.Search for more papers by this authorNatalia Olahova
Ghent University, Laboratory for Chemical Technology, Ghent, Belgium.
Search for more papers by this authorMarko R. Djokic
Ghent University, Laboratory for Chemical Technology, Ghent, Belgium.
Search for more papers by this authorRuben Van de Vijver
Ghent University, Laboratory for Chemical Technology, Ghent, Belgium.
Search for more papers by this authorNenad D. Ristic
Ghent University, Laboratory for Chemical Technology, Ghent, Belgium.
Search for more papers by this authorGuy B. Marin
Ghent University, Laboratory for Chemical Technology, Ghent, Belgium.
Search for more papers by this authorMarie-Françoise Reyniers
Ghent University, Laboratory for Chemical Technology, Ghent, Belgium.
Search for more papers by this authorCorresponding Author
Kevin M. Van Geem
Ghent University, Laboratory for Chemical Technology, Ghent, Belgium.
Ghent University, Laboratory for Chemical Technology, Ghent, Belgium.Search for more papers by this authorAbstract
Sulfur-containing compounds play a key role in many industrial processes. Particularly for the steam cracking process, they have been linked with increased olefin selectivity, CO formation, and coke inhibition. The influence of four different sulfur-containing additives, methanedithione, (methyldisulfanyl)methane, (methylsulfanyl)methane, and dimethyl sulfoxide, on product selectivity, coke deposition, and CO production during steam cracking of a surrogate light naphtha feed is investigated. The use of online comprehensive 2D gas chromatography with sulfur chemiluminescence detection (GC×GC-SCD) is the key enabling technology to characterize the sulfur compounds. Steam cracking in a pilot-plant unit revealed that all studied sulfur compounds are efficient in reducing the CO yield. Simultaneously, they strongly promote coke.
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