Pervaporation process for separating alcohols from ethers

Details Pervaporation process for separating alcohols from ethers Pervaporation process for separating alcohols from ethers

1987-11-25

1988-09-27

Mars, Howard T.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568699, 585324, 585328, 585639, 585818, C07C 4106, C07C 4134

Patent

active

047743654

ABSTRACT:
The present invention is an improved process for separating alcohols from ethers and/or hydrocarbon raffinate in an etherification process. The excess alcohol reactant, which forms azeotrope mixtures with the product ethers and C.sub.4 -C.sub.7 raffinate, is removed by passing the liquid azeotrope mixture over a pervaporation membrane which effectively breaks the azeotrope and permeates the alcohol with high flux and high selectivity. In a typical etherification process, one or more pervaporation membrane units can be located ahead of the ether/raffinate distillation step, in conjunction with the distillation step with a liquid side draw, after the distillation step, or a combination of any of the above. The present invention also provides an improved process for separating alcohols from ethers and/or hydrocarbon raffinate in an ether decomposition process for the production of high purity iso-alkene products. In this embodiment, one or more pervaporation membranes are used to recover alcohols from the decomposition product stream.

REFERENCES:
patent: 3726942 (1973-04-01), Louder
patent: 3846088 (1974-11-01), Brown et al.
patent: 4118425 (1978-10-01), Herbstman
patent: 4218569 (1980-08-01), Chase et al.
patent: 4302298 (1981-11-01), Mikitenko et al.
patent: 4324924 (1982-04-01), Torck et al.
patent: 4334964 (1982-06-01), Prezeij et al.
patent: 4405409 (1983-09-01), Tusel et al.
patent: 4409421 (1983-10-01), Herwig et al.
patent: 4447653 (1984-05-01), Vora
patent: 4465870 (1984-08-01), Herskovits
patent: 4544776 (1985-10-01), Osterburg et al.
patent: 4547530 (1985-10-01), McCreedy et al.
patent: 4570026 (1986-02-01), Keyworth et al.
patent: 4590098 (1986-05-01), Kazuse et al.
patent: 4591440 (1986-05-01), Higashimura et al.
patent: 4605787 (1986-08-01), Chu et al.

Affiliated with

Also associated with

Rating

Pervaporation process for separating alcohols from ethers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pervaporation process for separating alcohols from ethers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pervaporation process for separating alcohols from ethers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2398870