Method for producing fluorinated organic compounds
AssigneeHoneywell International Inc.
InventorsHaluk Kopkalli, Yuon Chiu, Hsueh Sung Tung
Life of this patent
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Abstract
Disclosed is a process for producing tetrafluoropropene comprising: (a) catalytically fluorinating at least one tetrafluoropropene in a first reactor to produce HCFO-1233xf; (b) reacting said HCFO-1233xf with hydrogen fluoride in a second reactor to produce HCFC-244bb; (c) recycling at least a portion of said HCFC-244bb back to said first reactor as recycled HCFC-244bb; and (d) catalytically dehydrochlorinating said recycled HCFC-244bb in said first reactor to produce HFO-1234yf.
Claims20
A process for producing fluorinated organic compounds comprising:
- (a) fluorinating in a first fluorination step at least one compound of Formula (I):
- CHX═CClC(X)3 (I)
- with a first fluorinating agent in a first reactor to produce at least one compound of Formula (IA):
- CHX═CClCF3 (IA)
- where each X is independently H or Cl;
- (b) fluorinating in a second fluorination step said at least one compound of Formula (IA) in a second reactor to produce at least one compound of Formula (IB):
- CH2XCClFCF3 (IB)
- with a second fluorinating agent;
- (c) recycling at least a portion of said at least one compound of Formula (IB) back to said first reactor as a recycled compound of Formula (IB);
- and
- (d) dehydrochlorinating said recycled compound of Formula (IB) in said first reactor to produce at least one compound of Formula (II):
- CF3CF═CHZ (II)
- where Z is independently H or Cl.
A process for producing fluorinated organic compounds comprising:
- (a) introducing one or more feed streams into a first reactor containing a fluorination catalyst and a dehydrochlorination catalyst, wherein said feed streams collectively comprise hydrogen fluoride, at least one compound of Formula (I):
- CHX═CClC(X)3 (I)
- and at least one compound of Formula (IB):
- CH2XCClFCF3 (IB)
- where each X is independently H or Cl;
- (b) contacting said one or more feed streams with said fluorination catalyst and said dehydrochlorination catalyst to produce a first intermediate product stream comprising at least one compound of Formula (IA):
- CHX═CClCF3 (IA)
- and at least one compound of Formula (II):
- CF3CF═CHZ (II)
- where Z is independently H or Cl;
- (c) converting at least a portion of said at least one compound of Formula (IA) into said at least one compound of Formula (IB) in a second reactor to produce a second intermediate product stream;
- (d) separating said second intermediate product stream into a product stream rich in said at least one compound of Formula (II) and recycle product stream rich in said at least one compound of Formula (IB);
- (e) introducing said recycle product stream into said first reactor as said one or more feed streams.
A process for producing tetrafluoropropene comprising:
- (a) introducing one or more feed streams into a first reactor containing a fluorination catalyst and a dehydrochlorination catalyst, wherein said feed streams collectively comprise tetrachloropropene, hydrogen fluoride, and HCFC-244bb;
- (b) contacting said one or more feed streams with said fluorination catalyst and said dehydrochlorination catalyst to produce a first intermediate product stream comprising HCFO-1233xf and HFO-1234yf;
- (c) converting at least a portion of said HCFO-1233xf into HCFC-244bb in a second reactor to produce a second intermediate product stream;
- (d) separating said second intermediate product stream into a product stream rich in HFO-1234yf and a recycle product stream rich in HCFC-244bb;
- and
- (e) introducing said recycle product stream into said first reactor as said one or more feed streams.
Dependencies are inferred from the claim text.