1. Petretec – Dupont’s Technology for Polyester Regeneration
A Green Chemistry Module
Petretec – Dupont’s Technology for Polyester Regeneration
Presidential Green Chemistry Challenge Award

2. World Proven Reserves of Crude Oil
65.4
20.6
63.7
44.0
675.7
74.9
89.5
thousand million barrels

3. World Proven Crude Oil Reserves
as percent of 1296 thousand million barrel total

4. Composition of Crude Oil

5. Crude Oil Classification
API Gravity = 35o

6. The Uses of Crude Oil

7. The Xylenes

8. Petroleum delivered from well field
Water washing to remove impurities
Distillation to separate by boiling point ranges
Conversion reactions to alter molecular structures
Mixing to obtain maximum commercial characteristics

9. Distillation – separation by boiling point
Petroleum Refining
Distillation – separation by boiling point

10. Petroleum Reforming

11. Conversion Reactions CRACK COMBINE REARRANGE THERMAL CATALYTIC
ALKYLATION
COMBINE
POLYMERIZATION
Dehydrogenation
Dehydroisomerization
Isomerization
Dehydrocyclization
Hydrocracking
REFORMIING
REARRANGE
ISOMERIZATION

12. Catalytic Reforming – Conversion Reactions

13. Preparation of PET monomers
Formation of ethylene glycol
Formation of TA and DMT

14. PET Polymerization Reactions
Step Growth Polymerization - Condensation
Ester Interchange - Transesterification

15. The Dupont
Petretec
Process
For
Polyester
Regeneration

16. Petretec Polyester Regeneration
Methanolysis Reactor
oC kPa