Process for the preparation of pure dimethyl ether

Details Process for the preparation of pure dimethyl ether Process for the preparation of pure dimethyl ether

2011-03-22

2011-03-22

Parsa, Jafar (Department: 1621)

Chemistry: fischer-tropsch processes; or purification or recover

Plural zones each having a fischer-tropsch reaction

C518S700000, C518S705000

Reexamination Certificate

active

07910630

ABSTRACT:
Process for the preparation of dimethyl ether product by catalytic conversion of synthesis gas to dimethyl ether comprising the steps of contacting a stream of synthesis gas comprising carbon dioxide in a dimethyl ether synthesis step in one or more reactors and with one or more catalysts being active in formation of methanol and dehydration of methanol to dimethyl ether, to form a product mixture comprising the dimethyl ether and carbon dioxide, washing the product mixture in a scrubbing zone with a liquid solvent being rich in dialkyl ether of a polyalkylene glycol and thereby dissolving carbon dioxide and dimethyl ether in the liquid solvent, treating the liquid solvent being withdrawn from the scrubbing zone sequentially in separation zone to effect desorption of the dissolved carbon dioxide and to recover a substantially pure dimethyl ether product and the liquid solvent in its substantially lean form and recycling the lean liquid solvent to the scrubbing zone.

REFERENCES:
patent: 5908963 (1999-06-01), Voss et al.
patent: 6458856 (2002-10-01), Peng et al.
patent: 1102943 (1968-02-01), None
Greene et al., carbon dioxide removal and recovery—new polyglocol ether processes, (Proceedings of the gas conditionings conference (1995) 1H-21H.
Hernandez et al., solvent unit cleans synthesis gas, (chemical engineering (New York, NY, United States) (1989), 62 (2), 154-156.

Affiliated with

Also associated with

Rating

Process for the preparation of pure dimethyl ether does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the preparation of pure dimethyl ether, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of pure dimethyl ether will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2665185