CA2124933A1 - Water separation process - Google Patents
Water separation processInfo
- Publication number
- CA2124933A1 CA2124933A1 CA002124933A CA2124933A CA2124933A1 CA 2124933 A1 CA2124933 A1 CA 2124933A1 CA 002124933 A CA002124933 A CA 002124933A CA 2124933 A CA2124933 A CA 2124933A CA 2124933 A1 CA2124933 A1 CA 2124933A1
- Authority
- CA
- Canada
- Prior art keywords
- liquid
- water
- stream
- gaseous
- product stream
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 185
- 238000000926 separation method Methods 0.000 title claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 184
- 238000000034 method Methods 0.000 claims abstract description 117
- 230000008569 process Effects 0.000 claims abstract description 105
- 238000004821 distillation Methods 0.000 claims abstract description 71
- 238000003682 fluorination reaction Methods 0.000 claims abstract description 58
- 239000003054 catalyst Substances 0.000 claims abstract description 43
- 230000008929 regeneration Effects 0.000 claims abstract description 23
- 238000011069 regeneration method Methods 0.000 claims abstract description 23
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910000040 hydrogen fluoride Inorganic materials 0.000 claims abstract description 6
- 239000000047 product Substances 0.000 claims description 157
- 239000012530 fluid Substances 0.000 claims description 62
- 239000007789 gas Substances 0.000 claims description 61
- 238000006243 chemical reaction Methods 0.000 claims description 38
- 239000000463 material Substances 0.000 claims description 38
- 239000012071 phase Substances 0.000 claims description 26
- 230000000694 effects Effects 0.000 claims description 21
- 238000010992 reflux Methods 0.000 claims description 21
- 238000012546 transfer Methods 0.000 claims description 19
- 150000001875 compounds Chemical class 0.000 claims description 17
- 239000012528 membrane Substances 0.000 claims description 17
- 238000001816 cooling Methods 0.000 claims description 16
- 238000009413 insulation Methods 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 14
- 238000004064 recycling Methods 0.000 claims description 14
- 239000007792 gaseous phase Substances 0.000 claims description 12
- 239000007791 liquid phase Substances 0.000 claims description 10
- 238000012544 monitoring process Methods 0.000 claims description 10
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 claims description 9
- 230000004888 barrier function Effects 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 8
- 238000010791 quenching Methods 0.000 claims description 8
- 238000009833 condensation Methods 0.000 claims description 7
- 230000005494 condensation Effects 0.000 claims description 7
- LVGUZGTVOIAKKC-UHFFFAOYSA-N 1,1,1,2-tetrafluoroethane Chemical compound FCC(F)(F)F LVGUZGTVOIAKKC-UHFFFAOYSA-N 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims description 6
- 238000010533 azeotropic distillation Methods 0.000 claims description 5
- 239000012466 permeate Substances 0.000 claims description 5
- CYXIKYKBLDZZNW-UHFFFAOYSA-N 2-Chloro-1,1,1-trifluoroethane Chemical compound FC(F)(F)CCl CYXIKYKBLDZZNW-UHFFFAOYSA-N 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 4
- 239000012080 ambient air Substances 0.000 claims description 3
- 239000007800 oxidant agent Substances 0.000 claims description 3
- 230000001143 conditioned effect Effects 0.000 claims description 2
- 238000009877 rendering Methods 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims 3
- 230000003647 oxidation Effects 0.000 claims 2
- 238000007254 oxidation reaction Methods 0.000 claims 2
- 239000003085 diluting agent Substances 0.000 abstract description 6
- 238000011084 recovery Methods 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 18
- 239000000203 mixture Substances 0.000 description 15
- 229910052799 carbon Inorganic materials 0.000 description 10
- 229910002804 graphite Inorganic materials 0.000 description 8
- 239000010439 graphite Substances 0.000 description 8
- 238000010276 construction Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 7
- 239000002826 coolant Substances 0.000 description 6
- 238000011143 downstream manufacturing Methods 0.000 description 6
- 239000000376 reactant Substances 0.000 description 6
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 5
- 239000003570 air Substances 0.000 description 5
- 239000011449 brick Substances 0.000 description 5
- 230000003750 conditioning effect Effects 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 241000518994 Conta Species 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical group O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 3
- 229960003750 ethyl chloride Drugs 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 101000606535 Homo sapiens Receptor-type tyrosine-protein phosphatase epsilon Proteins 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 102100039665 Receptor-type tyrosine-protein phosphatase epsilon Human genes 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 150000004820 halides Chemical class 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000005201 scrubbing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- -1 unchanged HF Substances 0.000 description 2
- BSYNRYMUTXBXSQ-UHFFFAOYSA-N Aspirin Chemical compound CC(=O)OC1=CC=CC=C1C(O)=O BSYNRYMUTXBXSQ-UHFFFAOYSA-N 0.000 description 1
- 101150058765 BACE1 gene Proteins 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 101100536354 Drosophila melanogaster tant gene Proteins 0.000 description 1
- 241000283986 Lepus Species 0.000 description 1
- 241000343235 Maso Species 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 241000237988 Patellidae Species 0.000 description 1
- 241000950638 Symphysodon discus Species 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 229910021386 carbon form Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000012018 catalyst precursor Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004334 fluoridation Methods 0.000 description 1
- 229910001055 inconels 600 Inorganic materials 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/68—Halogens or halogen compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/20—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms
- C07C17/202—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction
- C07C17/206—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction the other compound being HX
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/20—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms
- C07C17/21—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms with simultaneous increase of the number of halogen atoms
-
- 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
- C07C17/383—Separation; Purification; Stabilisation; Use of additives by distillation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/584—Recycling of catalysts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S502/00—Catalyst, solid sorbent, or support therefor: product or process of making
- Y10S502/514—Process applicable either to preparing or to regenerating or to rehabilitating catalyst or sorbent
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Drying Of Gases (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Hydrogen, Water And Hydrids (AREA)
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9126228.7 | 1991-12-10 | ||
| GB919126228A GB9126228D0 (en) | 1991-12-10 | 1991-12-10 | Water separation process |
| GB9218607.1 | 1992-09-03 | ||
| GB929218607A GB9218607D0 (en) | 1992-09-03 | 1992-09-03 | Containment vessels |
| GB929219469A GB9219469D0 (en) | 1992-09-15 | 1992-09-15 | Water separation process |
| GB9219469.5 | 1992-09-15 | ||
| PCT/GB1992/002175 WO1993011853A1 (en) | 1991-12-10 | 1992-11-25 | Water separation process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2124933A1 true CA2124933A1 (en) | 1993-06-24 |
Family
ID=27265960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002124933A Abandoned CA2124933A1 (en) | 1991-12-10 | 1992-11-25 | Water separation process |
Country Status (10)
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2659956B1 (fr) * | 1990-03-21 | 1992-06-26 | Cogema | Procede de traitement d'une solution aqueuse contenant principalement de l'acide nitrique et de l'acide fluorhydrique. |
| GB9425063D0 (en) * | 1994-12-13 | 1995-02-08 | Ici Plc | Process for the recovery of a hydrfluoroalkane in the liquid phase |
| US5654494A (en) * | 1995-08-18 | 1997-08-05 | Alliedsignal Inc. | Process for the manufacture of 1,1,1,2-tetrafluoroethane |
| GB9616879D0 (en) * | 1996-08-10 | 1996-09-25 | Ici Plc | Removal of water from process streams |
| CN100496706C (zh) | 2001-06-28 | 2009-06-10 | 霍尼韦尔国际公司 | 氟化催化剂的制备方法 |
| US6927312B2 (en) * | 2003-11-12 | 2005-08-09 | Honeywell International Inc. | Method of removing water from hydrofluorocarbon manufacturing processes |
| US6787678B1 (en) | 2003-12-11 | 2004-09-07 | Honeywell International Inc. | Method of removing water from hydrofluorocarbon manufacturing processes |
| GB0427968D0 (en) * | 2004-12-21 | 2005-01-26 | Davy Process Technology Switze | Process |
| CN101631605B (zh) * | 2007-02-20 | 2012-10-03 | 国际壳牌研究有限公司 | 气体分离膜系统及其制备或修复方法和用途 |
| US8701412B2 (en) * | 2011-07-25 | 2014-04-22 | General Electric Company | System for recovering heat from a biomass gasifier |
| FR3023286B1 (fr) * | 2014-07-02 | 2018-02-16 | Arkema France | Procede de fabrication de tetrafluoropropene |
| JP6370684B2 (ja) * | 2014-11-14 | 2018-08-08 | エドワーズ株式会社 | 除害装置 |
| FR3078699B1 (fr) | 2018-03-07 | 2020-02-21 | Arkema France | Procede de production du 2,3,3,3-tetrafluoropropene |
| FR3078700B1 (fr) | 2018-03-07 | 2020-07-10 | Arkema France | Procede de production du 2,3,3,3-tetrafluoropropene |
| FR3078698B1 (fr) | 2018-03-07 | 2020-02-21 | Arkema France | Procede de production du 2-chloro-3,3,3-trifluoropropene |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3218364A (en) * | 1962-12-30 | 1965-11-16 | Thiokol Chemical Corp | Purification of perfluoroolefins and chloroperfluoroolefins |
| US3300538A (en) * | 1963-03-06 | 1967-01-24 | Thiokol Chemical Corp | Purification of perfluoroolefins and chloroperfluoroolefins |
| US3455650A (en) * | 1967-03-08 | 1969-07-15 | Continental Oil Co | Production of hydrogen fluoride |
| US3725536A (en) * | 1968-02-26 | 1973-04-03 | R Gentili | Method of the continuous production of hydrofluoric acid |
| US3792104A (en) * | 1970-06-27 | 1974-02-12 | Basf Ag | Manufacture of isoprene |
| DE2209960C3 (de) * | 1972-03-02 | 1979-10-11 | Bayer Ag, 5090 Leverkusen | Verfahren zur Aufarbeitung von Fluorwasserstoff-haltigen Rohgasen der Flußsäureherstellung |
| US4062930A (en) * | 1973-05-31 | 1977-12-13 | Bohdan Zawadzki | Method of production of anhydrous hydrogen fluoride |
| US3855399A (en) * | 1973-08-16 | 1974-12-17 | Dow Chem Bv | Process of producing hydrogen fluoride from fluosilicic acid |
| US4150102A (en) * | 1975-10-02 | 1979-04-17 | Bayer Aktiengesellschaft | Purifying hydrofluoric acid |
| DE3309576A1 (de) * | 1983-03-17 | 1984-09-20 | Hoechst Ag, 6230 Frankfurt | Abkuehlungseinrichtung |
| US4853148A (en) * | 1987-03-24 | 1989-08-01 | Advanced Technology Materials, Inc. | Process and composition for drying of gaseous hydrogen halides |
| US5171899A (en) * | 1988-05-17 | 1992-12-15 | Daikin Industries Ltd. | Process for production of 1,1,1-trifluoro-2,2-dichloroethane |
| ES2034568T3 (es) * | 1989-11-27 | 1993-04-01 | Sigri Great Lakes Carbon Gmbh | Revestimiento resistente a la corrosion. |
| US5243105A (en) * | 1990-03-29 | 1993-09-07 | Imperial Chemical Industries Plc | Chemical process |
| GB9007029D0 (en) * | 1990-03-29 | 1990-05-30 | Ici Plc | Chemical process |
| DK0467531T3 (da) * | 1990-07-04 | 1994-10-31 | Ici Plc | Fremgangsmåde til adskillelse af 1,1,1,2-tetrafluorethan fra blandinger deraf med hydrogenfluorid og/eller 1-chlor-2,2-difluorethylen |
| US5208398A (en) * | 1992-04-16 | 1993-05-04 | Elf Atochem N.A., Inc. | HF extraction of R365 from R141B |
-
1992
- 1992-11-23 GB GB929224594A patent/GB9224594D0/en active Pending
- 1992-11-25 CA CA002124933A patent/CA2124933A1/en not_active Abandoned
- 1992-11-25 BR BR9206899A patent/BR9206899A/pt active Search and Examination
- 1992-11-25 JP JP5510689A patent/JPH07501979A/ja active Pending
- 1992-11-25 EP EP92923910A patent/EP0625067A1/en not_active Withdrawn
- 1992-11-25 AU AU29514/92A patent/AU663347B2/en not_active Ceased
- 1992-11-25 WO PCT/GB1992/002175 patent/WO1993011853A1/en not_active Application Discontinuation
- 1992-12-09 US US07/987,718 patent/US5334784A/en not_active Expired - Fee Related
- 1992-12-10 CN CN92115386A patent/CN1077138A/zh active Pending
-
1993
- 1993-04-20 TW TW082103022A patent/TW237392B/zh active
-
1994
- 1994-05-02 US US08/235,927 patent/US6103944A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| WO1993011853A1 (en) | 1993-06-24 |
| US6103944A (en) | 2000-08-15 |
| US5334784A (en) | 1994-08-02 |
| JPH07501979A (ja) | 1995-03-02 |
| TW237392B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1995-01-01 |
| BR9206899A (pt) | 1995-11-28 |
| EP0625067A1 (en) | 1994-11-23 |
| AU663347B2 (en) | 1995-10-05 |
| AU2951492A (en) | 1993-07-19 |
| GB9224594D0 (en) | 1993-01-13 |
| CN1077138A (zh) | 1993-10-13 |
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