Process for deactivating Ziegler-Natta and metallocene catalysts

Details Process for deactivating Ziegler-Natta and metallocene catalysts Process for deactivating Ziegler-Natta and metallocene catalysts

1993-05-18

1994-12-06

Pal, Asok

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

Regenerating or rehabilitating catalyst or sorbent

By heat

502107, 502152, 588223, 588228, 588234, 588235, B01J 2034, B01J 3802

Patent

active

053710533

ABSTRACT:
A process for deactivating Ziegler-Natta and metallocene catalysts or catalyst systems "such systems are typically used for olefin polymerization". The process includes heating the active catalyst or catalyst system to a temperature sufficient to drive off volatile constituents, and to form complexes and compounds that are non-reactive or less reactive with ambient air than the active catalyst or catalyst system. The process includes steps for safe deactivation including scrubbing to substantially eliminate corrosive compounds, and burning volatile chemicals in a flare.
This process essentially eliminates the production of hazardous classification waste from conventional water catalyst deactivation techniques.

REFERENCES:
patent: 4314053 (1982-02-01), Lin et al.
patent: 4450098 (1984-05-01), Lambertus et al.
patent: 4649128 (1987-03-01), Rekers et al.

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