Dimethyl ether synthesis from CO{sub 2}-rich syngas in the LPDME process
- Univ. of Akron, OH (United States)
The liquid phase dimethyl ether, LPDME, synthesis process was developed by the University of Akron and EPRI team as a means to overcome the chemical equilibrium involved in the synthesis of methanol from a syngas feed. This process alleviates the methanol synthesis equilibrium limitation by converting the product into dimethyl ether. The conversion is performed in a slurry reactor and involves the use of a dual catalyst mixture for the single-stage conversion of syngas to DME. As with the LPMeOH{trademark}, the LPDME process utilizes an inert mineral oil to facilitate heat transfer as well as provide a medium for catalyst mixing. The reaction typically takes place at 250 C and 7.0 MPa and makes use of Cu/ZnO/Al{sub 2}O{sub 3} and {gamma}-Alumina as the methanol synthesis and DME synthesis catalysts respectively. As with LPMeOH{trademark}, the water gas shift reaction plays an important role on final DME productivity, reaction rate and selectivity. The emphasis in this paper is to examine the effect of varying CO{sub 2} concentrations on the reaction kinetics. DME productivity, reaction rate, and selectivity as a function of CO{sub 2} concentration in syngas was examined. Concentrations of CO{sub 2} in syngas ranging from 4% to 13% were used.
- OSTI ID:
- 257131
- Report Number(s):
- CONF-950952-; TRN: IM9631%%337
- Resource Relation:
- Conference: 12. annual international Pittsburgh coal conference, Pittsburgh, PA (United States), 11-15 Sep 1995; Other Information: PBD: 1995; Related Information: Is Part Of Twelfth annual international Pittsburgh coal conference: Proceedings. Coal -- Energy and the environment; PB: 1248 p.
- Country of Publication:
- United States
- Language:
- English
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