Hydrocarbon fuels from gas phase decarboxylation of hydrolyzed free fatty acid

Handle URI:
http://hdl.handle.net/10754/561999
Title:
Hydrocarbon fuels from gas phase decarboxylation of hydrolyzed free fatty acid
Authors:
Wang, Weicheng; Roberts, William L. ( 0000-0003-1999-2831 ) ; Stikeleather, Larry F.
Abstract:
Gas phase decarboxylation of hydrolyzed free fatty acid (FFA) from canola oil has beeninvestigated in two fix-bed reactors by changing reaction parameters such as temperatures,FFA feed rates, and H 2-to-FFA molar ratios. FFA, which contains mostly C 18 aswell as a few C 16, C 20, C 22, and C 24 FFA, was fed into the boiling zone, evaporated, carriedby hydrogen flow at the rate of 0.5-20 ml/min, and reacted with the 5% Pd/C catalystin the reactor. Reactions were conducted atmospherically at 380-450 °C and the products,qualified and quantified through gas chromatography-flame ionization detector(GC-FID), showed mostly n-heptadecane and a few portion of n-C 15, n-C 19, n-C 21, n-C 23 as well as some cracking species. Results showed that FFA conversion increased withincreasing reaction temperatures but decreased with increasing FFA feed rates and H 2-to-FFA molar ratios. The reaction rates were found to decrease with higher temperatureand increase with higher H 2 flow rates. Highly selective heptadecane was achieved byapplying higher temperatures and higher H 2-to-FFA molar ratios. From the results, ascatalyst loading and FFA feed rate were fixed, an optimal reaction temperature of 415 °C as well as H 2-to-FFA molar ratio of 4.16 were presented. These results provided goodbasis for studying the kinetics of decarboxylation process. © 2012 American Society of Mechanical Engineers.
KAUST Department:
Clean Combustion Research Center; Mechanical Engineering Program; Physical Sciences and Engineering (PSE) Division
Publisher:
ASME International
Journal:
Journal of Energy Resources Technology
Issue Date:
2012
DOI:
10.1115/1.4006867
Type:
Article
ISSN:
01950738
Sponsors:
This material is based upon work supported in part by the National Science Foundation EFRI program under Grant EFRI-093772 and by Department of Energy Applied Research Project Agency-Energy under Grant No. 25A5144.
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorWang, Weichengen
dc.contributor.authorRoberts, William L.en
dc.contributor.authorStikeleather, Larry F.en
dc.date.accessioned2015-08-03T09:35:56Zen
dc.date.available2015-08-03T09:35:56Zen
dc.date.issued2012en
dc.identifier.issn01950738en
dc.identifier.doi10.1115/1.4006867en
dc.identifier.urihttp://hdl.handle.net/10754/561999en
dc.description.abstractGas phase decarboxylation of hydrolyzed free fatty acid (FFA) from canola oil has beeninvestigated in two fix-bed reactors by changing reaction parameters such as temperatures,FFA feed rates, and H 2-to-FFA molar ratios. FFA, which contains mostly C 18 aswell as a few C 16, C 20, C 22, and C 24 FFA, was fed into the boiling zone, evaporated, carriedby hydrogen flow at the rate of 0.5-20 ml/min, and reacted with the 5% Pd/C catalystin the reactor. Reactions were conducted atmospherically at 380-450 °C and the products,qualified and quantified through gas chromatography-flame ionization detector(GC-FID), showed mostly n-heptadecane and a few portion of n-C 15, n-C 19, n-C 21, n-C 23 as well as some cracking species. Results showed that FFA conversion increased withincreasing reaction temperatures but decreased with increasing FFA feed rates and H 2-to-FFA molar ratios. The reaction rates were found to decrease with higher temperatureand increase with higher H 2 flow rates. Highly selective heptadecane was achieved byapplying higher temperatures and higher H 2-to-FFA molar ratios. From the results, ascatalyst loading and FFA feed rate were fixed, an optimal reaction temperature of 415 °C as well as H 2-to-FFA molar ratio of 4.16 were presented. These results provided goodbasis for studying the kinetics of decarboxylation process. © 2012 American Society of Mechanical Engineers.en
dc.description.sponsorshipThis material is based upon work supported in part by the National Science Foundation EFRI program under Grant EFRI-093772 and by Department of Energy Applied Research Project Agency-Energy under Grant No. 25A5144.en
dc.publisherASME Internationalen
dc.subjectbiofuelen
dc.subjectfree fatty aciden
dc.subjectGas phase decarboxylationen
dc.subjectPd/Cen
dc.titleHydrocarbon fuels from gas phase decarboxylation of hydrolyzed free fatty aciden
dc.typeArticleen
dc.contributor.departmentClean Combustion Research Centeren
dc.contributor.departmentMechanical Engineering Programen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalJournal of Energy Resources Technologyen
dc.contributor.institutionDepartment of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695, United Statesen
dc.contributor.institutionDepartment of Biological and Agricultural Engineering, North Carolina State University, Raleigh, NC 27695, United Statesen
kaust.authorRoberts, William L.en
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