High conversion TAME and MTBE production process
Patent
·
OSTI ID:6126778
This patent describes isopentene, or isoamylene, conversion to methyl tertamyl ether that can be substantially improved while high conversion of isobutylene to methyl tert-butyl ether can be maintained by carrying out the overall etherification process with alkanol in a staged manner, wherein the first stage is methanol etherification of a C{sub 5+}, or C{sub 5}, hydrocarbon feedstream rich in isoamylene and the second stage is etherification to produce MTBE and additional TAME from a C{sub 4+}, or C{sub 4}, feedstream. Unreacted methanol and hydrocarbons from the first etherification are uniquely separated by fractionation from the TAME product by using the second stage C{sub 4+} feedstream as a reflux stream to the fractionator and passed to the second etherification zone. Products from the second etherification zone are separated by distillation to produce MTBE, TAME and C{sub 5+}, or C{sub 5}, hydrocarbons as a bottom stream.
- Assignee:
- Mobil Oil Corp., New York, NY (USA)
- Patent Number(s):
- A; US 4988366
- Application Number:
- PPN: US 7-427221
- OSTI ID:
- 6126778
- Country of Publication:
- United States
- Language:
- English
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