Increasing Petrochemicals Project Earnings by Increasing Petrochemicals Project Earnings by Upgrading Steam Cracker C4s and C5s Upgrading Steam Cracker C4s and C5s Stephen Stanley Jose de Barros Fred Gardner Lummus Technology 1 st Indian Oil Petrochemical Conclave March 16, 2012 New Delhi
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Increasing Petrochemicals Project Earnings by … Petrochemicals Project Earnings by Upgrading Steam Cracker C4s and C5s Stephen Stanley Jose de Barros Fred Gardner Lummus Technology
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Increasing Petrochemicals Project Earnings by Increasing Petrochemicals Project Earnings by Upgrading Steam Cracker C4s and C5sUpgrading Steam Cracker C4s and C5s
Stephen StanleyJose de BarrosFred Gardner
Lummus Technology
1st Indian Oil Petrochemical ConclaveMarch 16, 2012
New Delhi
OutlineOutline
• Today’s presentation will cover C4s and C5s processing routes, including:
– Butadiene Extraction
– Metathesis to produce Propylene from both C4s and C5s Olefins
– Skeletal Isomerization to convert either normal or iso– Skeletal Isomerization to convert either normal or isoC4s and C5s
– Linear and Skeletal Isomerization for increased Butene1 production
– Metathesis and Isomerization to produce Butene 1 and Hexene 1
– Etherification to produce MTBE or TAME
CC22--CC44 Olefins Price HistoryOlefins Price History
3000
3500
4000
4500
5000
$/t
on
ETHYLENE
PROPYLENE
Maximize butadiene yield for highest operating margin
Butadiene prices higher than ethylene and propylene
OCT Reactor Ethylene Column Propylene ColumnGuard Bed
OCT Process Scheme a Simple ProcessOCT Process Scheme a Simple Process
Ultra-high purity propylene >99.9+%
C4 & C5 Feed C4 PlusC4 & C5 Recycle
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No superfractionators required
Energy-neutral reaction
Fixed bed
reactor
CDCDIsisIsis ProcessProcess
• CDIsis isomerizes both isobutene & isopenteneto normal butene & pentene to increase OCU feed
• CDIsis unit, integrated with OCT, is an effective way of converting low-value isobutene & isopentene to ultimately high-value propylene isopentene to ultimately high-value propylene product
16
Chemistry Chemistry
• Chemistry:
– Olefin skeletal isomerization
– Equilibrium reaction
• Can go both ways
• Temperature sets equilibrium distribution
17
Isobutene
Butene-2
Butene-1
~
CDCDIsisIsisSMSM Skeletal Isomerization of IsobuteneSkeletal Isomerization of Isobutene
CD-DeIB®
Conventional Processing
OCT
Isobutene/Isobutane to Cracking
Propylene
Ethylene
Mixed C4sOlefins
~
Poor Crackingselectivity
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Cracking
Mixed C4sOlefins CDCD--DeIBDeIB OCTOCT
~
Propylene
CDCDIsisIsisIsobutaneIsobutene
~Ethylene
Adds up to 60% more propylene production
CDIsis Unit for more Propylene
CDCDIsisIsis Unit Integrated with OCTUnit Integrated with OCT
255 kta
Mixed C4s
CC44 Treating and Treating and Selective Selective
HydrogenationHydrogenation
CDCD--DeIBDeIB
UnitUnit
H2
78 kta Isobutane/ Isobutene purge
34 kta
Ethylene
OCT Unit100 kta
Propylene
Product
43 kta
C4+ By-product
i-C4s
CDCDIsisIsis Unit Integrated with OCTUnit Integrated with OCT
255 kta
Mixed C4s
H2
CC44 Treating and Treating and Selective Selective