WO2011060211A1 - Method to purify and stabilize chloroolefins - Google Patents
Method to purify and stabilize chloroolefins Download PDFInfo
- Publication number
- WO2011060211A1 WO2011060211A1 PCT/US2010/056440 US2010056440W WO2011060211A1 WO 2011060211 A1 WO2011060211 A1 WO 2011060211A1 US 2010056440 W US2010056440 W US 2010056440W WO 2011060211 A1 WO2011060211 A1 WO 2011060211A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- chloroolefins
- phosgene
- chloroalkanes
- tetrachloropropene
- mixtures
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/38—Separation; Purification; Stabilisation; Use of additives
- C07C17/389—Separation; Purification; Stabilisation; Use of additives by adsorption on solids
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/38—Separation; Purification; Stabilisation; Use of additives
- C07C17/42—Use of additives, e.g. for stabilisation
Definitions
- the present invention is directed towards a method of purification of chloroolefins having 3 carbons and to a method to provide stable compositions of chloroolefins having 3 carbons.
- CFCs chlorofluorocarbons
- HFCs hydrofluorocarbons
- ODP negligible ozone depletion potential
- GWP acceptable low global warming potential
- thermoset and thermoplastic foams are useful as low GWP blowing agents for thermoset and thermoplastic foams, solvents, heat transfer fluids such as in heat pumps and refrigerants
- material which are useful as low GWP blowing agents for thermoset and thermoplastic foams, solvents, heat transfer fluids such as in heat pumps and refrigerants include but are not limited to, 2,3,3,3- tetrafluoropropene (1234yf), 1,3,3,3- tetrafluoropropene (1234ze), 3,3,3- trifluoropropene (1243zf), 1- chloro-3,3,3- trifluoropropene (1233zd), 2- chloro- 3,3,3 trifluoropropene (1233xf).
- the process of manufacturing these materials typically involves processes of fluorination with HF of chloroolefins starting materials such as 1,1,2,3- tetrachloropropene (123 Oxa) for manufacturing 1234yf and/or 1233xf, 1,1 ,3, 3 -tetrachloropropene (1230za) for manufacturing 1234ze and /or I233zd and 1,1,3- trichloropropene (1240za) for manufacturing 1243zf.
- 1,1,2,3- tetrachloropropene 123 Oxa
- 1,1 ,3, 3 -tetrachloropropene (1230za) for manufacturing 1234ze and /or I233zd
- 1,1,3- trichloropropene (1240za) for manufacturing 1243zf.
- the present invention is directed towards a method of purification of chloroolefins having 3 carbons and a method to provide stable compositions of purified
- chloroolefins having 3 carbons such as 1,1,2,3- tetrachloropropene, 1,1,3,3- tetrachloropropene, 1,1,3- trichloropropene and mixtures thereof.
- a first aspect of this invention includes a method of purification of chloroolefins having 3 carbons to provide chloroolefins free of decomposition product such as phosgene or phosgene precursors.
- decomposition product such as phosgene or phosgene precursors.
- the present invention is directed towards a method of providing stable composition of chloroolefins having 3 carbons that do not appreciably decompose during storage or during their subsequent use.
- the chloroolefins provided by the method of the present invention can be used in fluorination processes for the manufacture of Low GWP materials such as 2,3,3,3-tetrafluoropropene and 2-chloro-3,3,3-trifluoropropene from 1230xa, 1,3,3,3-tetrafluoropropene and the manufacture of l-chloro-3,3,3- triiluoropropene from 1230za and the manufacture of 3,3,3-trifluoropropene from 1240za.
- Low GWP materials such as 2,3,3,3-tetrafluoropropene and 2-chloro-3,3,3-trifluoropropene from 1230xa, 1,3,3,3-tetrafluoropropene and the manufacture of l-chloro-3,3,3- triiluoropropene from 1230za and the manufacture of 3,3,3-trifluoropropene from 1240za.
- WO2009003165 discloses the stabilization of hydrofluoroolefms HFO and/or hydrochlorofluoroolefms HCFO against degradation during storage, handling and use such by adding stabilizer(s) selected from free radical scavengers, acid scavengers, oxygen scavengers, polymerization inhibitors and mixtures thereof.
- stabilizer(s) selected from free radical scavengers, acid scavengers, oxygen scavengers, polymerization inhibitors and mixtures thereof.
- US Patent 5,169,995 hydrochlorofluorocarbon HCFC 141b which is inhibited against
- US Patent 5,221,697 discloses the use of alumina to stabilize hydrochlorofluorocarbon HCFC 141b against decomposition during storage or use.
- WO2008127940 describes the stabilization of tetrachloropropenes using an
- antioxidants such as a phenolic antioxidant including p.methoxyphenol or
- the inhibitors are solid materials that makes handling on a commercial scale difficult to implement. Furthermore these inhibitors require the use of MONEL ® alloy for the vessels to minimize the formation of acid or phosgene.
- This present invention is directed towards a method of purification or stabilization of chloropropene and/ or chloropropane.
- the purification provides for stable
- compositions of chloropropenes such as 1,1,2,3-tetrachloropropene (1230xa), 1,1,3,3- tetrachloropropene (1230za), 1,1,1,2-tetrachloropropene (1230xf), 1,1,3- trichloropropene (1240za) and chloropropanes such as 240db 1 ,1,1,2,3- pentachloropropane, 240ab 1,1,1,2,2-pentachloropropane or mixtures thereof.
- the method of the present invention provides stable, purified chloroolefins compositions which are particularly useful for the manufacture of HFOs and HCFOs such as 1234yf, 1233xf, 1234ze, 1233zd andl243zf
- Phosgene, COCI2 is a hazardous material commonly produced during the
- a similar degradation mechanism occurs when 1230za or 1240za orl230xf, are stored or manufactured in ferrous containers.
- the formation of phosgene can also occur when the precursor to the chloroalkenes, such as 240db CCI 3 CHCICH 2 CI in case of 1230xa is exposed to oxygen containing gas when stored in a ferrous container.
- Scheme 2 shows a typical reaction sequence.
- the present invention is directed towards the use of a solid adsorbent for the removal of decomposition products such as to phosgene, acids such as HCl and/ or carboxylic acid, from the reaction of chloroolefins and/ or chloroalkanes having 3 carbons, with oxygen.
- the solid adsorbents are selected from high surface area alumina, AI 2 O 3 , activated carbon or mixtures thereof.
- the adsorbent is preferably subjected to a drying process such as being placed under vacuum or heating to eg 100- 200°C, under vacuum, until no more moisture is desorbed from the solid adsorbent.
- a drying process such as being placed under vacuum or heating to eg 100- 200°C, under vacuum, until no more moisture is desorbed from the solid adsorbent.
- the surface area of the resulting dry adsorbent varies from about 10 to 4000 m 2 / g and porosity varies from about 0.005 to 0.5 cm 3 / g.
- This aspect of this invention provides for the removal of phosgene or phosgene precursors with the solid absorbent and allows for the storage of chloroolefins/ chloroalkanes in non-ferrous containers without the need for the addition of any further stabilization additives.
- the invention is directed towards the addition of inhibitors capable of stabilizing chloroolefins and/ or chloroalkanes having 3 carbons against an increase of the phosgene level.
- Preferred inhibitors are selected from the group consisting of ct- methyl styrene, a- pineneoxide, ⁇ -pineneoxide, 1,2-epoxy butane, 1,2-hexadecene oxide, oxygen scavengers such as DEHA (diethylhydroxylamine), HQ (hydroquinone), MEKO (methylethylketooxime), p- methoxyphenol and the like and mixtures thereof.
- the level of the inhibitors can vary from about 20 ppm to 5 % weight and preferably from about 50 ppm to 2 weight %.
- This method prevents the formation of phosgene and/or acids from a decomposition reaction of the chloroolefins and/ or chloroalkanes with oxygen even if stored in ferrous containers.
- This present invention also provides a benefit during the use of the chlorinated propene and/ or chlorinated propane in fluorination processes by providing stability for the chlorinated propene and/ or chlorinated propane.
- the present invention provides for purified and stabilized chlorinated propene and/or chlorinated propane such as 1230xa or 240db for use in the catalyzed fluorination to 1233xf.
- the latter compound can be used as the feedstock for the manufacturing of low GWP products such as 1234yf.
- the present invention also provides stable and purified chlorinated propene and/or chlorinated propane such as 1230za which is useful in the production of 1233zd and 1234ze
- Hydrochloro olefin 1230xa can be analyzed to determine the presence of anhydrous FeCl 3 using inductive coupling plasma mass spectrometry (ICP).
- ICP inductive coupling plasma mass spectrometry
- a typical contamination level is 2 ppm of anhydrous FeCl 3 .
- the presence of phosgene can be determined by colorimetric testing using 4-(p-nitrobenzyl)-pyridine as described in A.L. Linch, et al., Am. Ind. Hyg. Ass. J. 26 (5), 465-73, 1965.
- a typical contamination level is 17 ppm of phospene. The measured absorption can be used to calculate the ppm level of phosgene against a calibration curve.
- the effect of the inhibitor in accordance with the present invention can be evaluated using an accelerated aging test comprising subjecting the contaminated 1230xa to UV irradiation for 5 hours. This is estimated to be equivalent to aging of 1230xa at room temperature for one year.
- the following prophetic examples outline the results expect from use of
- Chloroalkene 1230xa 120 grams, containing phosgene 14ppm
- 50 grams of a variety of commercially available dried activated alumina such as La Roche A201 , A204 and BASF AL-4126 E/16
- Analysis of phosgene can be carried out
- Chloroalkene 1230xa containing about 14 ppm phosgene could be fed at a rate of about 20 ml/min at room temperature, through a fixed bed of about 85 grams of a LaRoche 204 or BASF AL-4126 E/16. The contact time would be about 5.3 minutes. For each of the alumina tested phosgene level of less than about 4 ppm would be expected.
- Example 2 with La Roche 204 alumina could be repeated with about 8 grams of activated alumina and a contact time of about 53 minutes.
- the phosgene level would be expected to be was reduced to about 4 ppm.
- the phosgene level would be expected to be was reduced to about 1 ppm.
- the alumina treated 1230xa from Example 2 containing about 5 weight % of alpha- methyl styrene, could be subjected to UV irradiation for about five hours in the presence of air, simulating about one year of aging at ambient temperature. Analysis would be expected to show no evidence of phosgene formation. In contrast, if untreated 1230xa would be irradiated under similar conditions, about 20 ppm of phosgene would be expected to form.
- Example 5 Stabilization of 1230xa against phosgene formation in the presence of inhibitors, alpha-methyl styrene AMS, 1,2-epoxy butane EB, alpha-pinene oxide APO. beta- pinene oxide BPO. diethylhydroxylamine DEHA
- Aerosol glass bottles would be filled with inhibitor (if any) impure 1230xa containing about 17 ppm phosgene and about 2 ppm FeC ⁇ .
- the bottles would be capped, air admitted to the bottles up to about 30 psig and the bottles would be placed in a box so as to form a ring.
- the ring would be slowly circulated and irradiated with a
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012538995A JP2013510869A (en) | 2009-11-16 | 2010-11-12 | Process for purifying and stabilizing chloroolefins |
CN2010800515084A CN102639475A (en) | 2009-11-16 | 2010-11-12 | Method to purify and stabilize chloroolefins |
EP10830756.2A EP2501666B1 (en) | 2009-11-16 | 2010-11-12 | Method to purify and stabilize chloroolefins |
PL10830756T PL2501666T3 (en) | 2009-11-16 | 2010-11-12 | Method to purify and stabilize chloroolefins |
ES10830756.2T ES2677351T3 (en) | 2009-11-16 | 2010-11-12 | Method to purify and stabilize chloroolefins |
US13/509,843 US9206097B2 (en) | 2009-11-16 | 2010-11-12 | Method to purify and stabilize chloroolefins |
Applications Claiming Priority (2)
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US26149809P | 2009-11-16 | 2009-11-16 | |
US61/261,498 | 2009-11-16 |
Publications (1)
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WO2011060211A1 true WO2011060211A1 (en) | 2011-05-19 |
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PCT/US2010/056440 WO2011060211A1 (en) | 2009-11-16 | 2010-11-12 | Method to purify and stabilize chloroolefins |
Country Status (7)
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US (1) | US9206097B2 (en) |
EP (1) | EP2501666B1 (en) |
JP (1) | JP2013510869A (en) |
CN (1) | CN102639475A (en) |
ES (1) | ES2677351T3 (en) |
PL (1) | PL2501666T3 (en) |
WO (1) | WO2011060211A1 (en) |
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US8558041B2 (en) | 2009-10-09 | 2013-10-15 | Dow Global Technologies, Llc | Isothermal multitube reactors and processes incorporating the same |
US8581011B2 (en) | 2009-10-09 | 2013-11-12 | Dow Global Technologies, Llc | Process for the production of chlorinated and/or fluorinated propenes |
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WO2014120865A1 (en) * | 2013-02-04 | 2014-08-07 | Honeywell International Inc. | Methods of handling chlorinated compounds used for manufacturing hfo-1234yf |
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WO2014159809A1 (en) * | 2013-03-14 | 2014-10-02 | Honeywell International Inc. | 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) |
US8907148B2 (en) | 2011-08-07 | 2014-12-09 | Dow Global Technologies Llc | Process for the production of chlorinated propenes |
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US8927792B2 (en) | 2011-06-08 | 2015-01-06 | Dow Agrosciences, Llc | Process for the production of chlorinated and/or fluorinated propenes |
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CN102639475A (en) | 2012-08-15 |
PL2501666T3 (en) | 2018-09-28 |
US20120226081A1 (en) | 2012-09-06 |
EP2501666A4 (en) | 2013-06-26 |
EP2501666B1 (en) | 2018-06-13 |
US9206097B2 (en) | 2015-12-08 |
ES2677351T3 (en) | 2018-08-01 |
JP2013510869A (en) | 2013-03-28 |
EP2501666A1 (en) | 2012-09-26 |
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