Fluorination process and reactor
AssigneeHoneywell International Inc.
InventorsDaniel C. Merkel, Hsueh Sung Tung, Haiyou Wang, Haluk Kopkalli, Yuon Chiu
Life of this patent
Estimating the term…
Abstract
The invention relates to a process to prepare tetrahalopropenes, such as 2-chloro-3,3,3-trifluoropropene (1233xf). The process comprises atomizing a feed material, such as 1,1,2,3-tetrachloropropene (1230xa) and the like, and mixing it with superheated HF to form a vaporized composition of feed material and HF with substantially instantaneous contact with a vapor phase fluorination catalyst. The invention extends catalyst life and forestalls catalyst deactivation.
Claims19
A reactor apparatus comprising:
- a reaction chamber;
- a heating chamber disposed on the reaction chamber, said heating chamber comprising a mixing area in fluid communication with said reaction chamber;
- at least first and second feed lines in fluid communication with said mixing area;
- and
- an atomizing nozzle disposed on at least said first feed line, said nozzle having an exit into said mixing area.
The apparatus of claim 5 wherein said nozzle exit is located proximate said catalyst bed.
A process to prepare a tetrahalopropene comprising:
- a) providing a reactor apparatus having a catalyst bed within a reaction chamber, and a heating chamber disposed on the reaction chamber, the heating chamber comprising a mixing area in fluid communication with said reaction chamber;
- b) supplying superheated HF and an atomized feed material selected from the group consisting of chlorocarbons, mixed chlorocarbons, and combinations thereof, to the mixing area under conditions effective to form a vaporized composition comprising the feed material and the HF;
- and
- c) contacting the vaporized composition with the catalyst bed under conditions effective to form the tetrahalopropene, wherein the contacting occurs substantially instantaneously with the formation of the vaporized composition.
A process to prepare 2-chloro-3,3,3-trifluoropropene (1233xf) comprising:
- a) mixing superheated HF and atomized feed material selected from the group consisting of 1,1,2,3 -tetrachloropropene (1230xa), 2,3,3,3-tetrachloropropene (1230xf), 1,1,1,2,3-tetrachloropropane (HCC-240db), and combinations thereof, under conditions effective to form a vaporized composition comprising the feed material and the HF;
- and
- b) contacting the vaporized composition with a catalyst under conditions to form 1233xf, the contacting occurring substantially instantaneously with the formation of the vaporized composition.
A process to prepare 2-chloro-3,3,3-trifluoropropene (1233xf) comprising:
- a) atomizing a starting composition comprising at least one compound having a structure selected from Formula I, II and II:
- CX2═CCl—CH2X (Formula I)
- CX3—CCl═CH2 (Formula II)
- CX3—CHCl—CH2X (Formula III)
- wherein X is independently selected from F, Cl, Br and I, provided that at least one of X is not F;
- b) contacting the atomized composition with superheated HF to form a vaporized starting composition under conditions effective to form 1233xf.
Dependencies are inferred from the claim text.