Catalyst/wax separation device for slurry Fischer-Tropsch reacto

Details Catalyst/wax separation device for slurry Fischer-Tropsch reacto Catalyst/wax separation device for slurry Fischer-Tropsch reacto

1998-08-07

2000-05-30

Killos, Paul J.

Mineral oils: processes and products

Processing of 'fischer-tropsch' crude

518700, 518705, 518709, 518715, 585921, C07C 2700

Patent

active

060687606

ABSTRACT:
Catalyst particles are separated from the wax in a Fischer-Tropsch reactor by feeding a portion of the reactor slurry to a dynamic settler which does not require any pump. As the slurry flows down a pipe in the center of the settler, the slurry flows into the surrounding annular region at the bottom of the settler. The heavier catalyst particles settle down and are removed as the slurry at the bottom of the settler is recycled back to the reactor. The wax rises up in the annular section and this clarified wax is removed by a wax outlet pipe. In an embodiment with an expanded diameter section above the Fischer-Tropsch reactor an additional dynamic settler can be placed inside this section. The Fischer-Tropsch catalyst can be regenerated by purging the catalyst with an inert gas for a period of time and by treating the catalyst with naphtha.

REFERENCES:
patent: 5811469 (1998-09-01), Leviness et al.
patent: 5817702 (1998-10-01), Behrmann et al.
patent: 5827903 (1998-10-01), White et al.
Status Review of Fischer-Tropsch Slurry Reactor/Catalyst Wax Separation Techniques prepared for the U.S. Department of Energy, Pittsburgh Energy Technology Center by P.Z. Zhou, Burns and Roe Services Corporation, Feb., 1991.

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