FI57250C - Separeringsfoerfarande foer kolvaete med ett simulerat motstroems-adsorptionsfoerfarande i ett roerligt skikt - Google Patents
Separeringsfoerfarande foer kolvaete med ett simulerat motstroems-adsorptionsfoerfarande i ett roerligt skikt Download PDFInfo
- Publication number
- FI57250C FI57250C FI3677/71A FI367771A FI57250C FI 57250 C FI57250 C FI 57250C FI 3677/71 A FI3677/71 A FI 3677/71A FI 367771 A FI367771 A FI 367771A FI 57250 C FI57250 C FI 57250C
- Authority
- FI
- Finland
- Prior art keywords
- zone
- extract
- adsorbent
- adsorption
- desorbent
- Prior art date
Links
- 239000003463 adsorbent Substances 0.000 claims description 99
- 239000000284 extract Substances 0.000 claims description 89
- 238000001179 sorption measurement Methods 0.000 claims description 52
- 239000007788 liquid Substances 0.000 claims description 38
- 238000000034 method Methods 0.000 claims description 28
- 239000000203 mixture Substances 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 19
- 238000000746 purification Methods 0.000 claims description 16
- 238000000926 separation method Methods 0.000 claims description 16
- 238000011144 upstream manufacturing Methods 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 9
- 229930195733 hydrocarbon Natural products 0.000 claims description 7
- 150000002430 hydrocarbons Chemical class 0.000 claims description 7
- 239000004215 Carbon black (E152) Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 4
- 238000004508 fractional distillation Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000007670 refining Methods 0.000 claims 2
- RYXPMWYHEBGTRV-UHFFFAOYSA-N Omeprazole sodium Chemical compound [Na+].N=1C2=CC(OC)=CC=C2[N-]C=1S(=O)CC1=NC=C(C)C(OC)=C1C RYXPMWYHEBGTRV-UHFFFAOYSA-N 0.000 claims 1
- 101150071716 PCSK1 gene Proteins 0.000 claims 1
- 239000003086 colorant Substances 0.000 claims 1
- 238000005201 scrubbing Methods 0.000 claims 1
- 239000002904 solvent Substances 0.000 claims 1
- 239000000463 material Substances 0.000 description 33
- 238000003795 desorption Methods 0.000 description 20
- 238000002474 experimental method Methods 0.000 description 17
- 238000010992 reflux Methods 0.000 description 11
- KVNYFPKFSJIPBJ-UHFFFAOYSA-N 1,2-diethylbenzene Chemical compound CCC1=CC=CC=C1CC KVNYFPKFSJIPBJ-UHFFFAOYSA-N 0.000 description 10
- 239000012530 fluid Substances 0.000 description 7
- 238000010926 purge Methods 0.000 description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000008096 xylene Substances 0.000 description 6
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 5
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 5
- 150000003738 xylenes Chemical class 0.000 description 5
- 239000010457 zeolite Substances 0.000 description 5
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 4
- 229910021536 Zeolite Inorganic materials 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 229910000323 aluminium silicate Inorganic materials 0.000 description 3
- 239000012459 cleaning agent Substances 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 239000003599 detergent Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- AFZZYIJIWUTJFO-UHFFFAOYSA-N meta-diethylbenzene Natural products CCC1=CC=CC(CC)=C1 AFZZYIJIWUTJFO-UHFFFAOYSA-N 0.000 description 3
- DSNHSQKRULAAEI-UHFFFAOYSA-N para-diethylbenzene Natural products CCC1=CC=C(CC)C=C1 DSNHSQKRULAAEI-UHFFFAOYSA-N 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical group CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 229910052788 barium Inorganic materials 0.000 description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 2
- OCKPCBLVNKHBMX-UHFFFAOYSA-N butylbenzene Chemical compound CCCCC1=CC=CC=C1 OCKPCBLVNKHBMX-UHFFFAOYSA-N 0.000 description 2
- RWGFKTVRMDUZSP-UHFFFAOYSA-N cumene Chemical compound CC(C)C1=CC=CC=C1 RWGFKTVRMDUZSP-UHFFFAOYSA-N 0.000 description 2
- -1 cyclic dienes Chemical class 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- IVSZLXZYQVIEFR-UHFFFAOYSA-N m-xylene Chemical group CC1=CC=CC(C)=C1 IVSZLXZYQVIEFR-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011538 cleaning material Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000010960 commercial process Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 150000001923 cyclic compounds Chemical class 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000005195 diethylbenzenes Chemical class 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052701 rubidium Inorganic materials 0.000 description 1
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000002594 sorbent Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G25/00—Refining of hydrocarbon oils in the absence of hydrogen, with solid sorbents
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/12—Purification; Separation; Use of additives by adsorption, i.e. purification or separation of hydrocarbons with the aid of solids, e.g. with ion-exchangers
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/12—Purification; Separation; Use of additives by adsorption, i.e. purification or separation of hydrocarbons with the aid of solids, e.g. with ion-exchangers
- C07C7/13—Purification; Separation; Use of additives by adsorption, i.e. purification or separation of hydrocarbons with the aid of solids, e.g. with ion-exchangers by molecular-sieve technique
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10167670A | 1970-12-28 | 1970-12-28 | |
| US10167670 | 1970-12-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FI57250B FI57250B (fi) | 1980-03-31 |
| FI57250C true FI57250C (fi) | 1980-07-10 |
Family
ID=22285845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI3677/71A FI57250C (fi) | 1970-12-28 | 1971-12-23 | Separeringsfoerfarande foer kolvaete med ett simulerat motstroems-adsorptionsfoerfarande i ett roerligt skikt |
Country Status (20)
| Country | Link |
|---|---|
| US (1) | US3732325A (en, 2012) |
| JP (1) | JPS5318486B1 (en, 2012) |
| AR (1) | AR200235A1 (en, 2012) |
| AU (1) | AU457983B2 (en, 2012) |
| BG (1) | BG19120A3 (en, 2012) |
| BR (1) | BR7108631D0 (en, 2012) |
| CA (1) | CA982494A (en, 2012) |
| CH (1) | CH576514A5 (en, 2012) |
| CS (1) | CS172939B2 (en, 2012) |
| DE (1) | DE2164689C3 (en, 2012) |
| ES (1) | ES398354A1 (en, 2012) |
| FI (1) | FI57250C (en, 2012) |
| FR (1) | FR2120015B1 (en, 2012) |
| GB (1) | GB1364668A (en, 2012) |
| HU (1) | HU167536B (en, 2012) |
| IE (1) | IE35915B1 (en, 2012) |
| IT (1) | IT945660B (en, 2012) |
| NO (1) | NO130356B (en, 2012) |
| PL (1) | PL84641B1 (en, 2012) |
| SU (1) | SU422164A3 (en, 2012) |
Families Citing this family (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3996306A (en) * | 1971-04-21 | 1976-12-07 | Uop Inc. | Aromatic hydrocarbon isomer separation process |
| US4029717A (en) * | 1974-04-01 | 1977-06-14 | Exxon Research And Engineering Company | Simulated moving bed adsorption-desorption process for paraxylene recovery |
| US4031151A (en) * | 1975-03-07 | 1977-06-21 | Exxon Research And Engineering Company | Separation of hydrocarbons |
| US4031156A (en) * | 1975-03-07 | 1977-06-21 | Exxon Research And Engineering Company | Separation and recovery of ethylbenzene by dual desorbent composition and temperature separation processes |
| US4028428A (en) * | 1975-07-14 | 1977-06-07 | Universal Oil Products Company | Process for the separation of ethylbenzene |
| US4031155A (en) * | 1975-09-29 | 1977-06-21 | Exxon Research And Engineering Company | Dual desorbent composition and temperature separation processes |
| CA1147272A (en) * | 1979-05-01 | 1983-05-31 | Rudolf J. Maas | Process for the separation of para-xylene |
| US4306107A (en) * | 1980-02-07 | 1981-12-15 | Uop Inc. | Production of pure M-xylene and pure ethyl benzene from a mixture of C8 aromatic isomers |
| EP0070908B1 (en) * | 1981-07-23 | 1985-10-23 | Uop Inc. | Process for the separation of meta-xylene |
| JPS58175239U (ja) * | 1982-05-18 | 1983-11-24 | 株式会社昭和製作所 | オ−プンステ−の取付部構造 |
| US4497972A (en) * | 1983-10-11 | 1985-02-05 | Uop Inc. | Process for the separation of ethylbenzene |
| JPS63160458U (en, 2012) * | 1987-04-09 | 1988-10-20 | ||
| US5109139A (en) * | 1988-08-31 | 1992-04-28 | Exxon Chemical Patents Inc. | Process control of process for purification of linear paraffins |
| US5171923A (en) * | 1988-08-31 | 1992-12-15 | Exxon Chemical Patents Inc. | Recycle for process for purification of linear paraffins |
| US7202205B1 (en) | 1999-09-01 | 2007-04-10 | Daniel Stedman Connor | Processes for making surfactants via adsorptive separation and products thereof |
| EP1511705A1 (en) | 2000-02-22 | 2005-03-09 | ExxonMobil Chemical Patents Inc. | Process for producing para-xylene |
| US7396973B1 (en) | 2005-02-02 | 2008-07-08 | Winter George R | Simulated moving bed adsorptive separation process for handling multiple feedstocks |
| US7208651B2 (en) * | 2005-03-03 | 2007-04-24 | Uop Llc | Product recovery from simulated-moving-bed adsorption |
| BRPI0710917A2 (pt) * | 2006-04-25 | 2012-02-22 | Exxonmobil Chemical Patents Inc | processo para a produção de um produto e de uma corrente ricos em para -xileno |
| US7683233B2 (en) | 2006-09-14 | 2010-03-23 | Exxonmobil Chemical Patents Inc. | Process for producing para-xylene |
| US8273934B2 (en) * | 2008-12-15 | 2012-09-25 | Exxonmobil Chemical Patents Inc. | Process for producing para-xylene |
| US8695633B2 (en) | 2010-09-09 | 2014-04-15 | Uop Llc | Control of rotary valve operation for reducing wear |
| US8753430B2 (en) | 2011-05-10 | 2014-06-17 | Uop Llc | Affixing a seal sheet to a rotor of a rotary valve |
| WO2013089920A2 (en) * | 2011-12-15 | 2013-06-20 | Uop Llc | System and process for recovering products using simulated-moving-bed adsorption |
| US20130153501A1 (en) * | 2011-12-15 | 2013-06-20 | Uop Llc | System and process for recovering products using simulated-moving-bed adsorption |
| US9017558B2 (en) | 2011-12-15 | 2015-04-28 | Uop Llc | System and process for recovering products using simulated-moving-bed adsorption |
| US8992779B2 (en) | 2011-12-15 | 2015-03-31 | Uop Llc | System and process for recovering products using simulated-moving-bed adsorption |
| US8933288B2 (en) | 2013-03-20 | 2015-01-13 | Uop Llc | System and process for flushing residual fluid from transfer lines in simulated moving bed adsorption |
| KR102156622B1 (ko) | 2019-05-13 | 2020-09-16 | 에스케이이노베이션 주식회사 | 노말 헵탄의 제조 방법 |
-
1970
- 1970-12-28 US US00101676A patent/US3732325A/en not_active Expired - Lifetime
-
1971
- 1971-12-20 CA CA130,565A patent/CA982494A/en not_active Expired
- 1971-12-21 GB GB5928971A patent/GB1364668A/en not_active Expired
- 1971-12-21 IE IE1623/71A patent/IE35915B1/xx unknown
- 1971-12-23 AU AU37268/71A patent/AU457983B2/en not_active Expired
- 1971-12-23 FI FI3677/71A patent/FI57250C/fi active
- 1971-12-24 FR FR7146618A patent/FR2120015B1/fr not_active Expired
- 1971-12-27 IT IT55016/71A patent/IT945660B/it active
- 1971-12-27 CS CS9011A patent/CS172939B2/cs unknown
- 1971-12-27 PL PL1971152510A patent/PL84641B1/pl unknown
- 1971-12-27 SU SU1731000A patent/SU422164A3/ru active
- 1971-12-27 HU HUUI186A patent/HU167536B/hu unknown
- 1971-12-27 NO NO04835/71A patent/NO130356B/no unknown
- 1971-12-27 ES ES398354A patent/ES398354A1/es not_active Expired
- 1971-12-27 DE DE2164689A patent/DE2164689C3/de not_active Expired
- 1971-12-28 AR AR239841A patent/AR200235A1/es active
- 1971-12-28 BG BG019357A patent/BG19120A3/xx unknown
- 1971-12-28 JP JP399372A patent/JPS5318486B1/ja active Pending
- 1971-12-28 BR BR8631/71A patent/BR7108631D0/pt unknown
- 1971-12-28 CH CH1906071A patent/CH576514A5/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| US3732325A (en) | 1973-05-08 |
| NO130356B (en, 2012) | 1974-08-19 |
| BR7108631D0 (pt) | 1973-05-03 |
| FR2120015A1 (en, 2012) | 1972-08-11 |
| FI57250B (fi) | 1980-03-31 |
| SU422164A3 (en, 2012) | 1974-03-30 |
| CS172939B2 (en, 2012) | 1977-01-28 |
| IE35915L (en) | 1972-06-28 |
| JPS5318486B1 (en, 2012) | 1978-06-15 |
| DE2164689B2 (de) | 1978-07-20 |
| AU457983B2 (en) | 1975-02-13 |
| DE2164689A1 (en, 2012) | 1972-07-13 |
| HU167536B (en, 2012) | 1975-10-28 |
| PL84641B1 (en, 2012) | 1976-04-30 |
| IE35915B1 (en) | 1976-06-23 |
| ES398354A1 (es) | 1975-03-16 |
| GB1364668A (en) | 1974-08-29 |
| AR200235A1 (es) | 1974-10-31 |
| AU3726871A (en) | 1973-06-28 |
| CH576514A5 (en, 2012) | 1976-06-15 |
| IT945660B (it) | 1973-05-10 |
| FR2120015B1 (en, 2012) | 1974-04-05 |
| CA982494A (en) | 1976-01-27 |
| BG19120A3 (bg) | 1975-04-30 |
| DE2164689C3 (de) | 1979-03-22 |
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