公开(公告)号：US20190351346A1

公开(公告)日：2019-11-21

申请号：US16525844

申请日：2019-07-30

Applicant: Borealis AG

Inventor： Mikko Lylykangas ,  Jukka Räsänen ,  Klaus Nyfors ,  Pekka Malinen

IPC: B01D1/22 ,  C01G1/06 ,  C01G23/02 ,  C22B34/12

Abstract: The present invention provides a process for recovering transition metal tetrahalides from a waste stream coming from a catalyst manufacturing process by (a) establishing a mixed stream comprising transition metal tetrahalide and transition metal alkoxyhalides; (b) forming a falling liquid film from the mixed stream of step (a) at a temperature of from 25 to 85° C. and an absolute pressure of from 0.05 to 0.6 bar; and (c) establishing from the film of step (b) a first vapour stream containing from 90 to 100% of recoverable components and a second liquid stream containing about 10 to 80% of titanium haloalkoxides.

公开(公告)号：US11213765B2

公开(公告)日：2022-01-04

申请号：US16525844

申请日：2019-07-30

Applicant: Borealis AG

Inventor： Mikko Lylykangas ,  Jukka Räsänen ,  Klaus Nyfors ,  Pekka Malinen

IPC: B01D3/14 ,  B01D3/22 ,  C01G23/02 ,  B01D1/22 ,  C01G1/06 ,  C22B34/12 ,  B01D3/28

Abstract: The present invention provides a process for recovering transition metal tetrahalides from a waste stream coming from a catalyst manufacturing process by (a) establishing a mixed stream comprising transition metal tetrahalide and transition metal alkoxyhalides; (b) forming a falling liquid film from the mixed stream of step (a) at a temperature of from 25 to 85° C. and an absolute pressure of from 0.05 to 0.6 bar; and (c) establishing from the film of step (b) a first vapour stream containing from 90 to 100% of recoverable components and a second liquid stream containing about 10 to 80% of titanium haloalkoxides.