fulltext.study @t Gmail

On the application of petroleum feedstock modeling techniques for developing molecule-based models of hydrocarbon conversion processes

Paper ID Volume ID Publish Year Pages File Format Full-Text
54403 47008 2014 10 PDF Available
Title
On the application of petroleum feedstock modeling techniques for developing molecule-based models of hydrocarbon conversion processes
Abstract

•The depth of compositional modeling of petroleum fractions was tested.•It is possible to generate computational mixtures that reproduce bulk properties and carbon number distributions of the actual hydrocarbon.•Verification with chromatography data revealed the infeasibility to predict all structural combinations of alkyl groups.•It is suggested to consider simplified representations built from main core structures and average side alkyl branching.

The design of hydrocarbon conversion processes currently demands more realistic modeling tools, with the capability of predicting product distribution at the molecular level. This requires a detailed molecular characterization, which generally is not available for complex feeds. The implementation of modeling techniques to simulate the molecular composition of petroleum feedstocks from routine analyses represents an alternative route towards molecule-based kinetic modeling. Nevertheless, generating a useful molecular representation depends heavily on the scope of the input analyses. This study aimed at verifying the requirements to construct a molecular representation that suits a detailed kinetic model, in terms of input data and model formulation. Two straight-run naphtha samples were selected as basis, in order to compare the simulated composition against gas chromatography data, and afterwards the analysis was extended to a light cycle oil. It was confirmed that it is possible to generate a synthetic mixture that behaves like the actual petroleum fraction in terms of bulk properties and even carbon number distributions. The comparison against gas chromatography data on the other hand, revealed that there are significant differences at the molecular level primarily due to the inability to predict all possible structural combinations of alkyl groups, which increases exponentially with the carbon number. For practical reasons then, it is proposed to work with a reduced set of chemically relevant species, built from a main core structure (e.g. an arrangement of aromatic or naphthenic rings) and a reduced set of alkyl branch configurations, rather than considering a vast number of structural combinations.

Keywords
Petroleum feedstock; Compositional modeling; Stochastic simulation
First Page Preview
On the application of petroleum feedstock modeling techniques for developing molecule-based models of hydrocarbon conversion processes
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volumes 220–222, March 2014, Pages 198–207
Authors
, , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us