A process for making 2,3,3,3-tetrafluoropropene (HFO-1234yf) includes providing a composition including 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) to a reactor including a heater surface at a surface temperature greater than about 850° F. (454° C.), and then bringing the composition into contact with the heater surface for a contact time of less than 10 seconds to dehydrochlorinate a portion of the HCFC-244bb to make HFO-1234yf.

A process for making 2,3,3,3-tetrafluoropropene (HFO-1234yf) includes providing a composition including 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) to a reactor including a heater surface at a surface temperature greater than about 850° F. (454° C.), and then bringing the composition into contact with the heater surface for a contact time of less than 10 seconds to dehydrochlorinate a portion of the HCFC-244bb to make HFO-1234yf.

A method for producing methyl fluoride, comprising the steps of: (1) pyrolyzing a starting compound in a gas phase to thereby obtain a mixed gas containing methyl fluoride and acid fluoride; and (2) rectifying the mixed gas obtained in step (1) to thereby obtain methyl fluoride.

A method for producing methyl fluoride, comprising the steps of: (1) pyrolyzing a starting compound in a gas phase to thereby obtain a mixed gas containing methyl fluoride and acid fluoride; and (2) rectifying the mixed gas obtained in step (1) to thereby obtain methyl fluoride.

Heterogenous azeotrope or azeotrope-like compositions comprising 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) and water which may include from about 0.05 wt. % to about 92.01 wt. % 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) and from about 7.99 wt. % to about 99.95 wt. % water and having a boiling point between about—13.5° C. and about 14.5° C. at a pressure of between about 12.5 psia and about 16.5 psia. The azeotrope or azeotrope-like compositions may be used to separate impurities from 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb).

Heterogenous azeotrope or azeotrope-like compositions comprising 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) and water which may include from about 0.05 wt. % to about 92.01 wt. % 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) and from about 7.99 wt. % to about 99.95 wt. % water and having a boiling point between about—13.5° C. and about 14.5° C. at a pressure of between about 12.5 psia and about 16.5 psia. The azeotrope or azeotrope-like compositions may be used to separate impurities from 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb).

A process for the manufacture of 1,1,3,3-tetrachloropropene, the process comprising dehydrochlorinating 1,1,1,3,3-pentachloropropane, where said step of dehydrochlorinating 1,1,1,3,3-pentachloropropane takes place in the presence of an oxidizing agent and in the presence of a Lewis acid, and where the oxidizing agent is chlorine and the Lewis acid is ferric chloride.

A process for the manufacture of 1,1,3,3-tetrachloropropene, the process comprising dehydrochlorinating 1,1,1,3,3-pentachloropropane, where said step of dehydrochlorinating 1,1,1,3,3-pentachloropropane takes place in the presence of an oxidizing agent and in the presence of a Lewis acid, and where the oxidizing agent is chlorine and the Lewis acid is ferric chloride.

A process for the manufacture of 1,1,3,3-tetrachloropropene, the process comprising dehydrochlorinating 1,1,1,3,3-pentachloropropane, where said step of dehydrochlorinating 1,1,1,3,3-pentachloropropane takes place in the presence of an oxidizing agent and in the presence of a Lewis acid, and where the oxidizing agent is chlorine and the Lewis acid is ferric chloride.

The present disclosure provides a method for conversion of a mixture of high-boiling fluorinated components comprising 1,1,3,3-tetrachloro-1-fluoropropane (HCFC-241fa), 1,3,3-trichloro-1,1-difluoropropane (HCFC-242fa), 1,1,3-trichloro-1,3-difluoropropane (HCFC-242fb), 3,3-dichloro-1,1,1-trifluoropropane (HCFC-243fa), 1,3-dichloro-1,1,3-trifluoropropane (HCFC-243fb), 3-chloro-1,1,1,3-tetrafluoropropane (HCFC-244fa), their isomers, and combinations thereof, to 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd). Heavy impurities, such as oligomers and other high boiling impurities, that are present may be purged during the process to prevent yield loss and reduction of catalyst efficacy.