Title:
【発明の名称】アルキルエーテルおよびその混合物の製造方法
Document Type and Number:
Japanese Patent JPH11511737
Kind Code:
A
Abstract:
The invention relates to a process for preparing tertiary alkyl ethers, in particular MTBE, ETBE or mixtures of these ethers with heavier ethers. According to the process the feedstock containing hydrocarbons is fed to a catalytic distillation reactor system, in which the isoolefines, in particular the C4 to C7 isoolefines, of the feed are reacted with an alkanol in the presence of a cation exchange resin in order to produce tertiary alkyl ether products. The reaction product containing the ethers is removed from the distillation system as the bottoms product and, if necessary, it is subjected to an additional treatment for producing a gasoline component. The unreacted alkanol is removed as the overhead product of the distillation. According to the invention, the distillate withdrawn mainly contains an azeotrope of C3 hydrocarbons and alkanol, the C3 amount of which at least approximately corresponds to the C3 hydrocarbon concentration of the hydrocarbon feed, a substantial amount of the unreacted alkanol being removed in the form of said azeotrope. By means of the invention the need for a separate alkanol washing unit is eliminated in the apparatus which considerably reduces apparatus investment costs.
Inventors:
Taminen, food
Lindkwist, Petri
Lindkwist, Petri
Application Number:
JP53305896A
Publication Date:
October 12, 1999
Filing Date:
December 19, 1996
Export Citation:
Assignee:
Neste salmon yukiture
International Classes:
B01D3/00; C07C41/06; C07C41/42; C07C43/04; C10L1/02; (IPC1-7): C07C43/04; C07C41/06; C07C41/42
Attorney, Agent or Firm:
Takashi Koshiba