Process for the production of methyl tert.-alkyl ethers
US4876394A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1988 |
| Grant date | Oct 24, 1989 |
| Priority date | — |
| Expiry date | Jun 29, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C41/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
In the production of methyl tert.-alkyl ethers by the reaction of methanol with isoalkylenes, the formation of dimethyl ether as an undesirable reaction by-product is reduced by recycling dimethyl ether to the reactor, advantageously in amounts sufficient to establish an equilibrium between the amount of dimethyl ether imparted to the reactor by way of recycle and the amount of dimethyl ether leaving the reactor as a portion of the reaction product whereby the formation of dimethyl ether in the reactor is essentially nil. In the present invention the essential recycle of dimethyl ether is accomplished by providing an adsorption capacity for dimethyl ether in the adsorption unit for recovering unreacted methanol and recycling dimethyl ether in combination with recycled methanol to the reactor as an effluent from the methanol adsorption unit during regeneration with isobutylene-containing C.sub.4 hydrocarbon feedstock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.