High conversion TAME and MTBE production process
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):
- US 4988366; A
- Application Number:
- PPN: US 7-427221
- OSTI ID:
- 6126778
- Resource Relation:
- Patent File Date: 24 Oct 1989
- Country of Publication:
- United States
- Language:
- English
Similar Records
New high conversion etherification process tested and patented
Advanced RWD[trademark] technology for ethers provides gasoline flexibility