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SUMMARY:Steam-cracking: an evergreen of the chemical process industry
DTSTART:20131115T101500
DTSTAMP:20260916T014014Z
UID:fae2a5392e9d86dcb4b60bda8bbeb5dca2164a7b701b49c97bb5a9f8
CATEGORIES:Conferences - Seminars
DESCRIPTION:Guy B. Marin\nMy lecture will focus on the thermal conversion 
 of fossil or renewable feedstocks to olefins. \nSteam cracking can be des
 cribed by considering a limited number of elementary reaction families not
  only for fossil but also for renewable feedstocks. Group contribution met
 hods can be applied to calculate the corresponding kinetic parameters. The
  group contributions follow from a data base obtained by high level ab ini
 tio calculations involving representative molecules and reactions. Based o
 n this single-event microkinetic (SEMK) methodology a reasonable agreement
  with pilot and industrial data was obtained for ethane steam cracking. 
  \nSEMK requires the characterization of a feed stock in terms of types o
 f molecules. Both fossil or renewable feedstocks typically  consist of a 
 considerable amount of types of molecules. The available information is li
 mited to commercial indices corresponding to. So-called molecular reconstr
 uction methods use macroscopic properties such as density and boiling poin
 t traject to obtain a characterization of the feedstock in the terms requi
 red. Of course they are based on a training set. The latter can be obtaine
 d by a GCxGC analysis of typical feeds.\nProcess optimization and innovati
 on not only involves feed stocks and reactor technology but should also ac
 count for up- or downstream units like the Transfer Line Exchanger (TLE)\,
  the convection section and the interaction between the furnace and the re
 actor coils. These aspects are discussed in the last part of my lecture.My
  lecture will focus on the thermal conversion of fossil or renewable feeds
 tocks to olefins. \nProcess optimization and innovation not only  involv
 es feed stocks and reactor technology but should also account for up- or d
 ownstream units like the Transfer Line Exchanger (TLE)\, the convection se
 ction and the interaction between the furnace and the reactor coils. These
  aspects are discussed in the last part of my lecture.
LOCATION:ME C2 405 http://plan.epfl.ch/?zoom=20&recenter_y=5864084.17342&r
 ecenter_x=730960.62257&layerNodes=fonds\,batiments\,labels\,information\,p
 arkings_publics\,arrets_metro&floor=2&q=me_c2%20405
STATUS:CONFIRMED
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