Gasoline range ether synthesis from light naphtha products of fluid catalytic cracking of Fischer-Tropsch wax
Conference
·
OSTI ID:254723
- Amoco Oil Co., Naperville, IL (United States)
The Fluid Catalytic Cracking of Fischer-Tropsch wax (C{sub 20}{sup +} paraffins) produces two to four time the concentration of reactive iso-olefins (isobutylene, isoamylenes, isohexenes) than observed from conventional gas oil feedstocks. Methanol reacts with these olefins to form the corresponding tertiary alkyl ethyl ethers: MTBE, TAME and MTHE`s. These etherification reactions are mildly exothermic and equilibrium limited. The reaction temperature and the olefin molecular structure are important variables for maximum ether yields. The base naphtha research octane number increases by 2-4 numbers after the etherification reaction. The presence of hydrogen has a detrimental affect on ether yields because of hydrogenation of reactive olefins to paraffins. The catalytic cracking of Fischer-Tropsch wax provides a non-conventional source of olefins for ether synthesis that can supplement existing and dwindling petroleum supplies.
- OSTI ID:
- 254723
- Report Number(s):
- CONF-940813--
- Country of Publication:
- United States
- Language:
- English
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