System and method for generating a purified catalyst

Patent metadata

Field	Value
Publication number	US-2016016156-A1
Application number	US-201414767421-A
Country	US
Kind code	A1
Filing date	Mar 10, 2014
Priority date	Mar 13, 2013
Publication date	Jan 21, 2016
Grant date	—

Abstract

Methods for generating a purified catalyst are provided. The method includes performing a reaction in a reaction vessel to generate a liquid catalyst and reaction products, purging the reaction products using an inert gas to form a purged catalyst, freezing the purged catalyst in the reaction vessel, and applying a vacuum to the reaction vessel while the purged catalyst thaws, wherein the vacuum removes residual reaction products to form a purified catalyst. Systems for generating a purified catalyst and a purified catalyst are also provided.

First claim

1 . A method for generating a purified catalyst, comprising:
performing a reaction in a reaction vessel to generate a liquid catalyst and reaction products; purging the reaction products using an inert gas to form a purged catalyst; freezing the purged catalyst in the reaction vessel; and applying a vacuum to the reaction vessel while the purged catalyst thaws, wherein the vacuum removes residual reaction products to form a purified catalyst.

2 . The method of claim 1 , wherein freezing the purged catalyst comprises supplying a coolant to rods within the reaction vessel.

3 . The method of claim 2 , wherein the coolant is dry ice, ice-water, water, liquid nitrogen, for a combination comprising at least one of the foregoing.

4 . The method of claim 1 , wherein the vacuum is applied proximate to the top of the reaction vessel.

5 . The method of claim 1 , wherein the vacuum is applied until the purged catalyst is liquefied.

6 . (canceled)

7 . The method of claim 1 , wherein the reaction products comprise hydrogen chloride.

8 . The method of claim 1 , wherein the reaction comprises ZrCl 4 +4C 3 H 7 COOH→Zr(OOCC 3 H 7 ) 4 +4HCl.

9 . The method of claim 1 , wherein the reaction comprises TiCl 4 +4C 4 H 9 OH→Ti(OC4H 9 ) 4 +4HCl.

10 . (canceled)

11 . The method of claim 1 , wherein the inert gas comprises nitrogen.

12 . The method of claim 1 , further comprising bubbling a second inert gas through the purified catalyst.

13 . The method of claim 12 , wherein the inert gas and the second inert gas are the same or wherein the inert gas and the second inert gas are different.

14 . (canceled)

15 . The method of claim 13 , wherein the second inert gas comprises nitrogen.

16 . The method of claim 1 , further comprising applying sonication to reaction vessel.

17 . The method of claim 1 , wherein the purified catalyst comprises less than about 2000 ppm of the reaction products.

18 . A system for generating a purified catalyst, comprising:
a reaction vessel configured to perform a reaction to generate a liquid catalyst and reaction products; a plurality of elongated rods in the reaction vessel or a coil in the reaction vessel, wherein each rod comprises or wherein the coil comprises:
a purge line configured to provide an inert gas to purge the reaction products to form a purged catalyst; and
a coolant line configured to freeze the purged catalyst in the reaction vessel; and
a vacuum line proximate to the top of the reaction vessel and configured to remove residual reaction products while the purged catalyst thaws to form a purified catalyst.

19 . The system for generating a purified catalyst of claim 18 , wherein the elongated rods are hollow, movable rods.

20 . (canceled)

21 . The system for generating a purified catalyst of claim 18 , wherein the coil is a hollow, movable coil.

22 . A purified catalyst prepared by the process comprising:
performing a reaction in a reaction vessel to generate a liquid catalyst and reaction products; purging the reaction products using an inert gas to form a purged catalyst; freezing the purged catalyst in the reaction vessel; and applying a vacuum to the reaction vessel while the purged catalyst thaws, wherein the vacuum removes residual reaction products to form a purified catalyst.

23 . The purified catalyst of claim 22 , wherein the purified catalyst comprises less than about 2000 ppm of the reaction products.

Assignees

• Saudi Basic Ind Corp

Inventors

• Azam Shahid
• Schmidt Roland
• Al-Hazmi Mohammed

Classifications

• B01J31/0212 Primary

  Alkoxylates · CPC title

• B01J2219/00081

  Tubes · CPC title

• B01J2219/24

  Stationary reactors without moving elements inside · CPC title

• C07F7/28

  Titanium compounds · CPC title

• B01J2219/00083

  Coils · CPC title