Method and device for producing lower olefins from oxygenates

Details Method and device for producing lower olefins from oxygenates Method and device for producing lower olefins from oxygenates

2011-04-12

2011-04-12

Singh, Prem C (Department: 1771)

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

From nonhydrocarbon feed

C585S640000, C585S807000, C585S809000, C208S313000, C208S322000, C208S332000, C208S333000, C203S025000, C203S081000

Reexamination Certificate

active

07923591

ABSTRACT:
Method and device for manufacturing at least one low olefin from an oxygenate-containing first reaction mixture (11) through conversion by a catalyst (20) to an olefin and paraffin-containing second reaction mixture (21) where the second reaction mixture (21) is flowed through a separation system (300), in which one at least one low olefin-containing first product stream (31) and at least one paraffin-enriched fraction (321) is extracted and where the remaining product stream (322) is at least partially recirculated to the catalyst (20).

REFERENCES:
patent: 4447318 (1984-05-01), Ogura et al.
patent: 2003/0139635 (2003-07-01), Hack et al.
patent: 2003/0199722 (2003-10-01), Lattner et al.
patent: 100 27 159 (2001-12-01), None
patent: 01/92190 (2001-12-01), None

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