Single stage LPDME synthesis using CO{sub 2}/CO-rich syngas
- Univ. of Akron, OH (United States). Dept. of Chemical Engineering
The Liquid Phase Dimethyl Ether process offers an opportunity for coproduction of methanol and dimethyl ether in a single stage. In this process a bifunctional catalytic system comprising of methanol synthesis catalyst and a dehydration catalyst such as alumina are used in a slurried inert mineral oil. Due to simultaneous occurrence of all the three reactions methanol reaction, dehydration reaction and water-gas shift reaction, higher conversion of syngas per pass may be achieved by removal of some methanol by chemical conversion to DME. In the LPDME process, methanol synthesis catalyst (composed of CuO, ZnO, and Al{sub 2}O{sub 3}) and the methanol dehydration catalyst (gamma-alumina) are slurried in the inert liquid phase. Syngas components (H{sub 2}, CO, CO{sub 2} and CH{sub 4}) and the products (CH{sub 3}OH, H{sub 2}O, and DME) constitute the vapor phase. As in LPMeOH{trademark}, CO{sub 2} plays a important role by controlling the water gas shift reaction. In this paper the effect of CO{sub 2} in feed syngas on reaction rates and selectivity as a function of CO{sub 2} concentration in syngas was examined.
- OSTI ID:
- 549531
- Report Number(s):
- CONF-960954--
- Country of Publication:
- United States
- Language:
- English
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