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Dynamic modeling and simulation of heavy paraffin dehydrogenation reactor for selective olefin production in linear alkyl benzene production plant

Paper ID Volume ID Publish Year Pages File Format Full-Text
42919 45947 2009 6 PDF Available
Title
Dynamic modeling and simulation of heavy paraffin dehydrogenation reactor for selective olefin production in linear alkyl benzene production plant
Abstract

Modeling of a heterogeneous industrial fixed bed reactor for selective dehydrogenation of heavy paraffin with Pt–Sn–Al2O3 catalyst has been the subject of current study. Using mass balance, momentum balance for appropriate element of reactor and applying pressure drop, rate and deactivation equations, a detailed model of the reactor has been obtained. Mass balance equations have been used for five different components. In order to investigate reactor performance in time, the reactor model which is a set of partial differential equations (PDEs), ordinary differential equations and algebraic equations has been solved numerically.Variation of paraffins, olefins, dienes, aromatics and hydrogen mole percent as a function of time and reactor radius have been found by numerical solution of the model. Modeling results have been compared with an industrial reactor data at different operating times. The comparison successfully confirms validity of the proposed model.It was found that at radius of 0.75–0.68 m of catalytic bed, there is not sensible conversion of paraffin as surface reaction is rate determining. At entrance of the bed variation of diene was near zero. Hydrogen production was high at entrance of the catalytic bed. Hydrogen production decreases along the reactor bed because of olefin cracking.

Graphical abstractModeling of a heterogeneous industrial fixed bed reactor for selective dehydrogenation of heavy paraffin with Pt–Sn–Al2O3 catalyst has been the subject of current study. A detailed model of the reactor has been developed. In order to estimate reactor production by the passage of time, the reactor model which is a set of partial differential equations (PDEs), ordinary differential equations and algebraic equations has been solved numerically.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Linear alkyl benzene; Paraffin; Dehydrogenation; Fixed bed reactor; Modeling
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Dynamic modeling and simulation of heavy paraffin dehydrogenation reactor for selective olefin production in linear alkyl benzene production plant
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 358, Issue 1, 30 April 2009, Pages 1–6
Authors
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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