| Patent application number | Description | Published |
|---|
| 20090234165 | PROCESS FOR THE MANUFACTURE OF FLUORINATED OLEFINS - A method for producing 1,1,1,2-tetrafluoropropene and/or 1,1,1,2,3 -pentafluoropropene using a single set of four unit operations, the unit operations being (1) hydrogenation of a starting material comprising hexafluoropropene and optionally recycled 1,1,1,2,3-pentafluoropropene; (2) separation of the desired intermediate hydrofluoroalkane, such as 1,1,1,2,3,3-hexafluoropropane and/or 1,1,1,2,3-pentafluoropropane; (3) dehydrofluorination of the intermediate hydrofluoroalkane to produce the desired 1,1,1,2-tetrafluoropropene and/or 1,1,1,2,3-pentafluoropropene, followed by another separation to isolate the desired product and, optionally, recycle of the 1,1,1,2,3-pentafluoropropene. | 09-17-2009 |
| 20090287026 | METHOD FOR PRODUCING FLUORINATED ORGANIC COMPOUNDS - 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. | 11-19-2009 |
| 20100119460 | Azeotrope-Like Compositions Of 2,3,3,3-Tetrafluoropropene And 3,3,3-Trifluoropropene - Provided are azeotropic or azeotrope-like mixtures of 2,3,3,3-tetrafluoropropene (1234yf) and 3,3,3-trifluoropropene (1243zf), as well as methods for producing and using the same. | 05-13-2010 |
| 20100307726 | Multi-Stage Multi-Tube Shell-and-Tube Reactor - A multi-stage, multi-tube, shell-and-tube reactor which contains reaction zones and interstage temperature control (cooling/heating) zones in series. The reactor has at least two types of zones which both contribute to removing or supplying heat to the system depending on the system's need. The reactor will have a group of reaction zones which contain tubes packed with catalyst to progress the reaction and remove or supply heat simultaneously. There are also a number of interstage temperature control (cooling/heating) zones which are designed to supply or remove heat to or from the system. The positioning, number, and design of the zones will depend on the amount of temperature control desired and exothermic or endothermic nature of the processes to be conducted in the reactor. | 12-09-2010 |
| 20100324345 | SYSTEMS AND PROCESSES FOR CFO-1113 FORMATION FROM HCFC-123a - Systems and processes relating to the formation and production of CFO-1113 HCFC-123 | 12-23-2010 |
| 20110054226 | Hydrogenation Process for Fluorocarbons - Disclosed is a process and apparatus for the catalytic hydrogenation of fluoroolefins to fluorocarbons where the reaction is carried out in a multi-tube shell and tube reactor. Reactions involving hydrogenation of fluoro-olefins are typically exothermic. In commercial processes where a fluoro-olefin C | 03-03-2011 |
| 20110105807 | Integrated Process for Fluoro-Olefin Production - Disclosed is a process for the manufacture of HFO-1234yf from TCP in three integrated steps that include hydrofluorination of TCP (tetrachloropropene) to HCFC-1233xf in the vapor phase followed by hydrofluorination of HCFC-1233xf to HCFC-244bb in the liquid phase which is then followed by dehydrochlorination in liquid or vapor phase to produce HFO-1234yf. The vapor phase hydrofluorination is carried out at a higher pressure than the liquid phase hydrofluorination, thereby eliminating the need for compression and/or intermediate recovery. Also, any HCl generated from this reaction is fed to the liquid phase hydrofluorination section to promote agitation and mixing. This results in a more economical process from an initial capital and operating cost versus conducting the 3-steps sequentially. | 05-05-2011 |
| 20110207974 | METHOD FOR PRODUCING FLUORINATED ORGANIC COMPOUNDS - 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. | 08-25-2011 |
| 20110269999 | PROCESS FOR DEHYDROHALOGENATION OF HALOGENATED ALKANES - A process for the manufacture of halogenated olefins in semi-batch mode by dehydrohalogenation of halogenated alkanes in the presence of an aqueous base such as KOH which simultaneously neutralizes the resulting hydrogen halide. During the process, aqueous base is continuously added to the haloalkane which results in better yields, lower by-product formation and safer/more controllable operation. | 11-03-2011 |
| 20110275723 | Azeotrope-Like Compositions Of Tetrafluoropropene And Water - Provided are azeotropic and azeotrope-like compositions of trans-1,3,3,3-tetrafluoropropene (HFO-1234ze(E)) and water. Such azeotropic and azeotrope-like compositions are useful in isolating trans-1,3,3,3-tetrafluoropropene from impurities during production. Azeotropes of the instant invention are similarly useful in final compositions or for the manufacture of final compositions, such as blowing agent, propellants, refrigerants, diluents for gaseous sterilization and the like. | 11-10-2011 |
| 20110275724 | Azeotrope-Like Compositions Of Pentafluoropropene And Water - Provided are azeotropic and azeotrope-like compositions of 1,2,3,3,3-pentafluoropropene (HFO-1225ye) and water. Such azeotropic and azeotrope-like compositions are useful in isolating 1,2,3,3,3-pentafluoropropene from impurities during production. Azeotropes of the instant invention are similarly useful in final compositions or manufacturing final compositions, such as blowing agent, propellants, refrigerants, diluents for gaseous sterilization and the like. | 11-10-2011 |
| 20110288347 | PROCESS FOR THE MANUFACTURE OF FLUORINATED OLEFINS - A method for producing 1,1,1,2-tetrafluoropropene and/or 1,1,1,2,3-pentafluoropropene using a single set of four unit operations, the unit operations being (1) hydrogenation of a starting material comprising hexafluoropropene and optionally recycled 1,1,1,2,3-pentafluoropropene; (2) separation of the desired intermediate hydrofluoroalkane, such as 1,1,1,2,3,3-hexafluoropropane and/or 1,1,1,2,3-pentafluoropropane; (3) dehydrofluorination of the intermediate hydrofluoroalkane to produce the desired 1,1,1,2-tetrafluoropropene and/or 1,1,1,2,3-pentafluoropropene, followed by another separation to isolate the desired product and, optionally, recycle of the 1,1,1,2,3-pentafluoropropene. | 11-24-2011 |
| 20120022302 | INTEGRATED PROCESS FOR THE MANUFACTURE OF FLUORINATED OLEFINS - The instant invention relates, at least in part, to a method increasing the cost efficiency for dehydrohalogenation production of a fluorinated olefin by recovering and recycling spent dehydrohalogenation agent. In one aspect, the present invention relates to dehydrohalogenating a fluorinated alkane (e.g. pentafluoropropane and/or hexafluoropropane) in the presence of a dehydrohalogenating agent to produce a fluorinated olefin (e.g. tetrafluoropropenes and/or pentafluoropropenes). Removal of spent dehydrohalogenating agent from the reactor allows for facile separation of organic and dehydrohalogenating agent, the latter of which is recycled. | 01-26-2012 |
| 20120134892 | Hydrogenation Process for Fluorocarbons - Disclosed is a process and apparatus for the catalytic hydrogenation of fluoro-olefins to fluorocarbons where the reaction is carried out in a multi-tube shell and tube reactor. Reactions involving hydrogenation of fluoro-olefins are typically exothermic. In commercial processes where a fluoro-olefin C | 05-31-2012 |
| 20120184785 | METHODS OF MAKING 2,3,3,3-TETRAFLUORO-2-PROPENE - Disclosed is a process for the manufacture of 1234yf from 1,1,2,3-tetrachloropropene, abbreviated herein as “TCP,” in three integrated steps:
| 07-19-2012 |
| 20120301373 | PROCESS FOR THE MANUFACTURE OF FLUORINATED OLEFINS - A method for producing 1,1,1,2-tetrafluoropropene and/or 1,1,1,2,3-pentafluoropropene using a single set of four unit operations, the unit operations being (1) hydrogenation of a starting material comprising hexafluoropropene and optionally recycled 1,1,1,2,3-pentafluoropropene; (2) separation of the desired intermediate hydrofluoroalkane, such as 1,1,1,2,3,3-hexafluoropropane and/or 1,1,1,2,3-pentafluoropropane; (3) dehydrofluorination of the intermediate hydrofluoroalkane to produce the desired 1,1,1,2-tetrafluoropropene and/or 1,1,1,2,3-pentafluoropropene, followed by another separation to isolate the desired product and, optionally, recycle of the 1,1,1,2,3-pentafluoropropene. | 11-29-2012 |
| 20130079563 | COMBINATION REACTOR SYSTEM - The present invention is directed to a combination reactor system for exothermic reactions comprising a trickle-bed reactor and a shell-and-tube reactor. This combination allows the system to efficiently remove heat while also providing the ability to control both the temperature and/or reaction progression. The trickle-bed reactor removes heat efficiently from the system by utilizing latent heat and does not require the use of a cooling or heating medium. The shell-and-tube reactor is used to further progress the reaction and provides a heat exchanger in order to introduce fluid at the desired temperature in the shell-and-tube reactor. Also, additional reactant or reactants and/or other fluids may be introduced to the shell-and-tube section of the reactor under controlled temperature conditions. | 03-28-2013 |
| 20130225881 | PROCESS FOR DEHYDROHALOGENATION OF HALOGENATED ALKANES - A process for the manufacture of halogenated olefins in semi-batch mode by dehydrohalogenation of halogenated alkanes in the presence of an aqueous base such as KOH which simultaneously neutralizes the resulting hydrogen halide. During the process, aqueous base is continuously added to the haloalkane which results in better yields, lower by-product formation and safer/more controllable operation. | 08-29-2013 |
| 20140275645 | PROCESS FOR THE MANUFACTURE OF FLUORINATED OLEFINS - In certain aspects, the present invention relates to methods for increasing the cost efficiency and safety of the hydrogenation of a fluorinated olefin by controlling the reaction conditions and parameters. In further aspects, the hydrogenation reaction is provided in a two stage reaction wherein the reactant amounts, temperature and other parameters are controlled such that the conversion percentage, selectivity, and reaction parameters are all within commercially acceptable levels. | 09-18-2014 |
| 20140275646 | METHOD FOR MITIGATING HFC-245CB FORMATION DURING HCFO-1233XF HYDROFLUORINATION TO HCFC-244BB - The present process relates to a method for minimizing the formation of 1,1,1,2,2-pentafluoropropane in a liquid phase reaction of 2-chloro-3,3,3-trifluoropropene and HF in the presence of a hydrofluorination catalyst comprising:
| 09-18-2014 |
| 20140275647 | FLUORINATION PROCESS AND REACTOR - 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. | 09-18-2014 |
| 20140275648 | STAGED FLUORINATION PROCESS AND REACTOR SYSTEM - The invention relates to a process to produce 244bb from 1233xf in multiple reaction zones whereby the 1233xf starting material is at least 95% converted to 244bb and by-product such as 245cb forms in amounts less than about 2%. | 09-18-2014 |
| 20140275650 | STABILIZER AND INHIBITOR FOR CHLOROPROPENES, SUCH AS TETRACHLOROPROPENE 1,1,2,3-TETRACHLOROPROPENE (1230xa), USED IN THE MANUFACTURE OF 2,3,3,3-TETRAFLUOROPROPENE (1234yf) - The present invention relates in part to a method of stabilizing chloropropenes, such as 1,1,2,3-tetrachloropropene, otherwise known to decompose and degrade, and to the resulting stabilized chloropropene, using a morpholine compound and/or a trialkyl phosphate compound as defined herein. Such stabilized chloropropenes are useful in the manufacture of hydrofluoroolefins such as 2,3,3,3-tetrafluoroprop-1-ene (1234yf). | 09-18-2014 |
| 20140275662 | PROCESS TO SUPPRESS THE FORMATION OF 3,3,3-TRIFLUOROPROPYNE IN FLUOROCARBON MANUFACTURE - This invention relates to a process for the suppression of 3,3,3-trifluoropropyne during the manufacture of fluorocarbons, fluoroolefins, hydrochlorofluoroolefins. More particularly, this invention is directed to a process to suppress the formation of 3,3,3-trifluoropropyne during processes for the manufacture of HCFO-1233zd(E), HCFO-1233zd(Z), HFO-1234ze(E), and/or HFO-1234ze(Z). | 09-18-2014 |
| 20140284517 | AZEOTROPE-LIKE COMPOSITIONS OF TETRAFLUOROPROPENE AND WATER - Provided are azeotropic and azeotrope-like compositions of trans-1,3,3,3-tetrafluoropropene (HFO-1234ze(E)) and water. Such azeotropic and azeotrope-like compositions are useful in isolating trans-1,3,3,3-tetrafluoropropene from impurities during production. Azeotropes of the instant invention are similarly useful in final compositions or for the manufacture of final compositions, such as blowing agent, propellants, refrigerants, diluents for gaseous sterilization and the like. | 09-25-2014 |
| 20140343331 | PROCESS TO MANUFACTURE 2-CHLORO-1,1,1,2-TETRAFLUOROPROPANE (HCFC-244bb) - The invention relates to a process to produce HCFC-244bb from HCFO-1233xf wherein, in one embodiment, co-feed species HFC-245cb is added to the reaction at a pressure of at least about 100 psig; and in another embodiment it is added to maintain a mole ratio of HFC-245cb to HCFO-1233xf of between about 0.005:1 to about 1:1. The HFC-245cb may be added as recycled by-product of the reaction and/or added as fresh feed. The HFC-245cb provides elevated pressures to the reaction thereby facilitating reactor operation, mixing and HCFC-244bb product removal. Other co-feed species are also disclosed. | 11-20-2014 |
| 20140364657 | PROCESS FOR REACTOR PASSIVATION - Disclosed is a process for passivating a surface of a dehydrochlorination reactor comprising: stopping a flow of hydrochlorofluoropropane to a reactor, passing a gas mixture comprising hydrogen gas through the reactor at a temperature of at least 25° C. for a period of time sufficient to restore the selectivity of a dehydrochlorination reaction, stopping the flow of the hydrogen gas mixture, and resuming the flow of hydrochlorofluoropropane to the dehydrochlorination reaction. Also disclosed is a process for producing a fluoropropene of formula CF | 12-11-2014 |
| 20150034523 | STABILIZER AND INHIBITOR FOR CHLOROPROPENES, SUCH AS TETRACHLOROPROPENE 1,1,2,3-TETRACHLOROPROPENE (1230xa), USED IN THE MANUFACTURE OF 2,3,3,3-TETRAFLUOROPROPENE (1234yf) - The present invention relates in part to a container for stabilized chloropropenes, such as 1,1,2,3-tetrachloropropene, otherwise known to decompose and degrade, and to the resulting stabilized chloropropene, using a morpholine compound and/or a trialkyl phosphate compound as defined herein. Such stabilized chloropropenes are useful in the manufacture of hydrofluoroolefins such as 2,3,3,3-tetrafluoroprop-1-ene (1234yf). | 02-05-2015 |
| 20150057472 | REACTION SYSTEM AND PROCESS TO PRODUCE FLUORINATED ORGANICS - The invention relates to the use of a liquid-vapor separator such as a de-entrainer to remove an unvaporized portion of a feed, e.g. 1,1,2,3-tetrachloropropene (1230xa), to a catalytic vapor phase fluorination reaction where e.g. 2-chloro-3,3,3,-trifluoropropene (1233xf) is produced. The invention extends the life of the catalyst. | 02-26-2015 |
