Reactor and agitator useful in a process for making 1-chloro-3,3,3-trifluoropropene
View Patent ↗Disclosed are a reactor and agitator useful in a high pressure process for making 1-chloro-3,3,3-trifluoropropene (1233zd) from the reaction of 1,1,1,3,3-pentachloropropane (240fa) and HF, wherein the agitator includes one or more of the following design improvements: (a) double mechanical seals with an inert barrier fluid or a single seal; (b) ceramics on the rotating faces of the seal; (c) ceramics on the static faces of seal; (d) wetted o-rings constructed of spring-energized Teflon and PTFE wedge or dynamic o-ring designs; and (e) wetted metal surfaces of the agitator constructed of a corrosion resistant alloy.
1. A reactor and agitator useful in a high pressure process for making 1-chloro-3,3,3-trifluoropropene (1233zd) from the reaction of 1,1,1,3,3-pentachloropropane (240fa) and HF, wherein the agitator includes one or more of the following improvements:
(a) double mechanical seals with an inert barrier fluid;
(b) wherein the rotating faces of the seals comprise ceramic parts or ceramic coatings;
(c) wherein the static faces of seal comprise ceramic parts or ceramic coatings;
(d) wetted o-rings for the seals are constructed of spring-energized perfluoroelastomer wedge or dynamic o-ring designs; and
(e) wetted metal surfaces of the agitator constructed of a corrosion resistant alloy; and wherein the spring-energized perfluoroelastomer wedge comprises the OMNISEAL® brand.
2. The reactor and agitator of claim 1 , wherein the barrier fluid comprises FLUOROLUBE®.
3. The reactor and agitator of claim 1 , wherein the ceramic parts or coatings comprise silicon carbide.
4. The reactor and agitator of claim 1 , wherein the reactor pressure range is from 150 psig to 600 psig.
5. The reactor and agitator of claim 1 , wherein the reactor pressure range is from 230 psig to 500 psig.
6. The reactor and agitator of claim 1 , wherein the reactor pressure range is from 350 psig to 450 psig.
7. The reactor and agitator of claim 1 , wherein the reactor temperature range is from 90° to 145° C.
8. A reactor and agitator useful in a high pressure process for making 1-chloro-3,3,3-trifluoropropene (1233zd) from the reaction of 1,1,1,3,3-pentachloropropane (240fa) and HF, wherein the agitator includes one or more of the following improvements:
(a) double mechanical seals with an inert barrier fluid;
(b) wherein the rotating faces of the seals comprise ceramic parts or ceramic coatings;
(c) wherein the static faces of seals comprise ceramic parts or ceramic coatings;
(d) wherein wetted o-rings for the seals are constructed of spring-energized perfluoroelastomer wedge or dynamic o-ring designs; and
(e) wherein wetted metal surfaces of the agitator comprise a corrosion resistant alloy; and wherein the corrosion resistant alloy comprises a nickel alloy.
9. The reactor and agitator of claim 8 , wherein the barrier fluid comprises FLUOROLUBE®.
10. The reactor and agitator of claim 8 , wherein the ceramic parts or coatings comprise silicon carbide.
11. The reactor and agitator of claim 8 , wherein the reactor pressure range is from 150 psig to 600 psig.
12. The reactor and agitator of claim 8 , wherein the reactor pressure range is from 230 psig to 500 psig.
13. The reactor and agitator of claim 8 , wherein the reactor pressure range is from 350 psig to 450 psig.
14. The reactor and agitator of claim 8 , wherein the reactor temperature range is from 90° to 145° C.
15. A reactor and agitator useful in a high pressure process for making 1-chloro-3,3,3-trifluoropropene (1233zd) from the reaction of 1,1,1,3,3-pentachloropropane (240fa) and HF, wherein the agitator includes one or more of the following improvements:
(a) double mechanical seals with an inert barrier fluid;
(b) wherein the rotating faces of the seals comprise ceramic parts or ceramic coatings;
(c) wherein the static faces of seals comprise ceramic parts or ceramic coatings;
(d) wherein wetted o-rings for the seals are constructed of spring-energized perfluoroelastomer wedge or dynamic o-ring designs; and
(e) wherein wetted metal surfaces of the agitator comprise a corrosion resistant nickel alloy; and
wherein the nickel alloy is selected from the group consisting of Alloy 20, the HASTELLOY® alloys and the INCONEL® alloys.
16. The reactor and agitator of claim 15 , wherein the barrier fluid comprises FLUOROLUBE®.
17. The reactor and agitator of claim 15 , wherein the ceramic parts or coatings comprise silicon carbide.
18. The reactor and agitator of claim 15 , wherein the reactor pressure range is from 150 psig to 600 psig.
19. The reactor and agitator of claim 15 , wherein the reactor pressure range is from 230 psig to 500 psig.
20. The reactor and agitator of claim 15 , wherein the reactor pressure range is from 350 psig to 450 psig.
21. The reactor and agitator of claim 15 , wherein the reactor temperature range is from 90° to 145° C.