Steam regeneration of phosphorus treated vanadium-phosphorus-oxy

Details Steam regeneration of phosphorus treated vanadium-phosphorus-oxy Steam regeneration of phosphorus treated vanadium-phosphorus-oxy

1983-12-14

1985-05-07

Konopka, P. E.

Catalyst, solid sorbent, or support therefor: product or process

Regenerating or rehabilitating catalyst or sorbent

Gas or vapor treating

502 32, 502 55, 502209, 549256, 549257, 549259, 549260, B01J 2728, C07D30760

Patent

active

045158991

ABSTRACT:
The useful life of vanadium-phosphorus-oxygen (PVO) catalyst in fixed bed reactors can be substantially extended by treatment with a phosphorus compound followed by steam treatment. The PVO catalysts may be treated with steam after long periods (months) of only phosphorus compound treatment and the benefit of the present invention obtained or the phosphorus and steam treatments may be of only a few hours duration and sequential. In extending the useful life of the PVO catalyst according to the present invention, the temperature profile in the catalyst bed is restored to substantially the same profile as the fresh catalyst.

REFERENCES:
patent: Re30430 (1980-11-01), Kerr
patent: 3296282 (1967-01-01), Kerr
patent: 3474041 (1969-10-01), Kerr
patent: 3906008 (1975-09-01), Veera
patent: 3975407 (1976-08-01), Veera
patent: 4017521 (1977-04-01), Schneider
patent: 4020174 (1977-04-01), Partenheimer
patent: 4081460 (1978-03-01), Kerr et al.
patent: 4089807 (1978-05-01), Partenheimer
patent: 4094816 (1978-06-01), Partenheimer
patent: 4111832 (1978-09-01), Rohbock et al.

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