METHOD FOR RECOVERING TRANSITION METAL TETRAHALIDE AND HYDROCARBONS FROM A WASTE STREAM
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United States of America Patent
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Nov 21, 2019
app pub date -
Jul 30, 2019
filing date -
Jul 30, 2019
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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.
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