Determining the Realtime Activity Parameters of a Pseudomonomolecular Kinetic Reforming Model

Graziani, Kenneth R.; Ramage, Michael P.

doi:10.1021/bk-1978-0065.ch023

Cited by 6 publications

(3 citation statements)

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“…Ramage i saradnici [20,21,67,68] su prezentovali veći broj radova u kojima su prikazali razvoj modela zasnovanog na eksperimentalnim podacima dobijenim iz oglednog (pilot) postrojenja za katalitički reforming benzina.…”

Section: Pseudo-kinetički Modeliunclassified

“…Kugelman [35] smatra da je ovo posledica sličnosti u reakcijama aromatizacije. Svi do sada objavljeni matematički modeli [13,19,58,59,[60][61][62][63][64][65][66][67][68] pretpostavljaju da su energije aktivacije identične za sve reakcije iste reakcione klase. Međutim, s obzirom na vrednosti energije aktivacije koje su objavljene u radovima Froment-a i saradnika [13,71] ova pretpostavka u ovom radu nije usvojena.…”

Section: Formulisanje Kinetičkog Modelaunclassified

“…Ovo je takođe očekivano ponašanje, s obzirom da normalni parafini izomerizuju veoma brzo u izoparafine, kao i zbog činjenice da su mnogo aktivniji u reakcijama dehidrociklizacije. Profili temperatura i molskih udela se veoma dobro slažu sa profilima prikazanim u literaturi [20,21,53,59,[62][63][64][65][66][67][68].…”

Section: Slika 36 Temperaturni Profil U Odnosu Na Maseni Udeo Kataliunclassified

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Modeling and energy optimization of the catalytic naphtha reforming process

Stijepović¹

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Section: Pseudo-kinetički Modeliunclassified

Section: Formulisanje Kinetičkog Modelaunclassified

Section: Slika 36 Temperaturni Profil U Odnosu Na Maseni Udeo Kataliunclassified

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Modeling and energy optimization of the catalytic naphtha reforming process

Stijepović¹

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Sensitivity analysis of catalytic conversion of n‐C₆

Wolff

1990

Chem Eng & Technol

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The present paper is a case study of an application of sensitivity analysis in chemical kinetics. Emphasis is laid upon chemical interpretation of sensitivity information and on identification of the most important model important model parameters. The kinetic model for reforming of C6 hydrocarbons proposed by Mobil [14] is extended to the analysis of the behavior of n‐hexane conversion in an adiabatic reactor. The importance of six initial conditions (feed composition and initial temperature) is analyzed by the computation of normalized first order sensitivity gradients (y 1o/y) (δyi/δy 1o). The relative importance of 21 model parameters αj is estimated by the computation of normalized sensitivity gradients of the type (αj/yi) (δyi/δαj). The influence of the decisive model parameters ΔH 6o and ΔH 3o (activation enthalpies of benzene hydrogenation and methyl cyclopentane isomerization, respectively) as well as operating parameters is presented. The problem of uncertainly in the value of ΔH 6o and its influence on the model solution is also sown. Finally, some advantages of the application of normalized gradients of the explanation of process behavior are discussed.

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