Claims
- 1. A process for the production of tertiary alkyl ethers which comprises(1) providing a liquid hydrocarbon feed comprising C4 to C6 tertiary olefins and a nitrogen-containing impurity (2) contacting the hydrocarbon feed with an alcohol selected from methanol, ethanol or mixtures thereof (3) distilling the hydrocarbon feed/alcohol mixture and removing the nitrogen-containing impurity as a fraction with a higher boiling point than a fraction containing the C4 to C6 tertiary olefins (4) reacting the fraction containing the C4 to C6 tertiary olefins with the alcohol over an acid catalyst to produce the corresponding tertiary alkyl ether.
- 2. A process according to claim 1 wherein the nitrogen containing impurity is propionitrile.
- 3. A process according to claim 1 wherein the liquid hydrocarbon feed is obtained by the fluid catalytic cracking of a gas oil fraction.
- 4. A process according to claim 1 wherein the alcohol contacted with the hydrocarbon feed during the distilling of the hydrocarbon feed/alcohol mixture is adjusted in quantity so that substantially all the alcohol is recovered as a distillate fraction.
- 5. A process according to claim 1 wherein the fraction containing C4 to C6 tertiary olefins is reacted with ethanol or methanol in the presence of hydrogen.
Priority Claims (1)
Number |
Date |
Country |
Kind |
9117071 |
Aug 1991 |
GB |
|
Parent Case Info
This is a continuation of application Ser. No. 07/925,539 filed Aug. 5, 1992 now U.S. Pat. No. 5,292,993.
US Referenced Citations (4)
Continuations (1)
|
Number |
Date |
Country |
Parent |
07/925539 |
Aug 1992 |
US |
Child |
08/158240 |
|
US |