FI64390B - Foerfarande foer behandling av sura petroleumdestillat - Google Patents

Foerfarande foer behandling av sura petroleumdestillat Download PDF

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Publication number
FI64390B
FI64390B FI790618A FI790618A FI64390B FI 64390 B FI64390 B FI 64390B FI 790618 A FI790618 A FI 790618A FI 790618 A FI790618 A FI 790618A FI 64390 B FI64390 B FI 64390B
Authority
FI
Finland
Prior art keywords
distillate
chloride
substituted ammonium
mercaptan
catalyst
Prior art date
Application number
FI790618A
Other languages
English (en)
Finnish (fi)
Other versions
FI790618A (fi
FI64390C (fi
Inventor
Robert Roy Frame
Original Assignee
Uop Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Uop Inc filed Critical Uop Inc
Publication of FI790618A publication Critical patent/FI790618A/fi
Application granted granted Critical
Publication of FI64390B publication Critical patent/FI64390B/fi
Publication of FI64390C publication Critical patent/FI64390C/fi

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
    • B01J31/1616—Coordination complexes, e.g. organometallic complexes, immobilised on an inorganic support, e.g. ship-in-a-bottle type catalysts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
    • B01J31/0234—Nitrogen-, phosphorus-, arsenic- or antimony-containing compounds
    • B01J31/0235—Nitrogen containing compounds
    • B01J31/0239—Quaternary ammonium compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
    • B01J31/0234—Nitrogen-, phosphorus-, arsenic- or antimony-containing compounds
    • B01J31/0235—Nitrogen containing compounds
    • B01J31/0254—Nitrogen containing compounds on mineral substrates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
    • B01J31/18—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes containing nitrogen, phosphorus, arsenic or antimony as complexing atoms, e.g. in pyridine ligands, or in resonance therewith, e.g. in isocyanide ligands C=N-R or as complexed central atoms
    • B01J31/1805—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes containing nitrogen, phosphorus, arsenic or antimony as complexing atoms, e.g. in pyridine ligands, or in resonance therewith, e.g. in isocyanide ligands C=N-R or as complexed central atoms the ligands containing nitrogen
    • B01J31/181—Cyclic ligands, including e.g. non-condensed polycyclic ligands, comprising at least one complexing nitrogen atom as ring member, e.g. pyridine
    • B01J31/1825—Ligands comprising condensed ring systems, e.g. acridine, carbazole
    • B01J31/183—Ligands comprising condensed ring systems, e.g. acridine, carbazole with more than one complexing nitrogen atom, e.g. phenanthroline
    • 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
    • C10G27/00—Refining of hydrocarbon oils in the absence of hydrogen, by oxidation
    • C10G27/04—Refining of hydrocarbon oils in the absence of hydrogen, by oxidation with oxygen or compounds generating oxygen
    • C10G27/06—Refining of hydrocarbon oils in the absence of hydrogen, by oxidation with oxygen or compounds generating oxygen in the presence of alkaline solutions
    • 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
    • C10G27/00—Refining of hydrocarbon oils in the absence of hydrogen, by oxidation
    • C10G27/04—Refining of hydrocarbon oils in the absence of hydrogen, by oxidation with oxygen or compounds generating oxygen
    • C10G27/10—Refining of hydrocarbon oils in the absence of hydrogen, by oxidation with oxygen or compounds generating oxygen in the presence of metal-containing organic complexes, e.g. chelates, or cationic ion-exchange resins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/18—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2231/00—Catalytic reactions performed with catalysts classified in B01J31/00
    • B01J2231/70—Oxidation reactions, e.g. epoxidation, (di)hydroxylation, dehydrogenation and analogues
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
    • B01J2531/02—Compositional aspects of complexes used, e.g. polynuclearity
    • B01J2531/0238—Complexes comprising multidentate ligands, i.e. more than 2 ionic or coordinative bonds from the central metal to the ligand, the latter having at least two donor atoms, e.g. N, O, S, P
    • B01J2531/0241—Rigid ligands, e.g. extended sp2-carbon frameworks or geminal di- or trisubstitution
    • B01J2531/025—Ligands with a porphyrin ring system or analogues thereof, e.g. phthalocyanines, corroles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
    • B01J2531/80—Complexes comprising metals of Group VIII as the central metal
    • B01J2531/84—Metals of the iron group
    • B01J2531/845—Cobalt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2540/00—Compositional aspects of coordination complexes or ligands in catalyst systems
    • B01J2540/30—Non-coordinating groups comprising sulfur
    • B01J2540/34—Sulfonyl groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Claims (8)

1. Sätt att behandla ett merkaptanhaltigt surt petroleum-destillat genom att bringa destillatet i kontakt med en pä bärare placerad oxidationskatalysator under oxidationsbetingelser vartill hör temperaturen mellan angivningstemperatur och 105°C och ett tryck mellan 1 och 69 atm i närvaro av ett alkaliskt reagens, och en substituerad ammoniumhalogenid, kännetecknat av att den substituerade ammoniumhalogeniden har strukturformeln ~ R - I + - R - N - R X ! R u i vilken R är en alkyl-, cykloalkyl-, aryl-, aralkyl-eller alkaryl-grupp innehällande upp tili 20 kolatomer, R är en i huvudsak rakkediad alkylgrupp innehällande 5-20 kolatomer och X betecknar en klor-, fluor-, brom- eller jodatom.
2. Sätt enligt patentkravet 1,kännetecknat av att det alkaliska reagenset utgöres av en 2-30 viktprocentig vatten-lösning av natriumhydroxid.
3. Sätt enligt patentkravet 1 eller 2, kännetecknat av att den substituerade ammoniumhalogeniden används tillsammans med det alkaliska reagenset i ett molförhällande mellan 0,001:1 och 1:1.
4. Sätt enligt nägot av patentkraven 1-3, kännetecknat av att den pä bäraren placerade merkaptanoxidationskataly-
FI790618A 1978-02-24 1979-02-23 Foerfarande foer behandling av sura petroleumdestillat FI64390C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US88072378 1978-02-24
US05/880,723 US4124493A (en) 1978-02-24 1978-02-24 Catalytic oxidation of mercaptan in petroleum distillate including alkaline reagent and substituted ammonium halide

Publications (3)

Publication Number Publication Date
FI790618A FI790618A (fi) 1979-08-25
FI64390B true FI64390B (fi) 1983-07-29
FI64390C FI64390C (fi) 1983-11-10

Family

ID=25376937

Family Applications (1)

Application Number Title Priority Date Filing Date
FI790618A FI64390C (fi) 1978-02-24 1979-02-23 Foerfarande foer behandling av sura petroleumdestillat

Country Status (33)

Country Link
US (3) US4124493A (sv)
JP (1) JPS54126204A (sv)
AR (1) AR228127A1 (sv)
AT (1) AT368543B (sv)
AU (1) AU518753B2 (sv)
BE (1) BE874264A (sv)
BG (1) BG48340A3 (sv)
BR (1) BR7901145A (sv)
CA (1) CA1124197A (sv)
DE (1) DE2905581C2 (sv)
DK (1) DK151972C (sv)
EG (1) EG14010A (sv)
ES (1) ES477956A1 (sv)
FI (1) FI64390C (sv)
FR (1) FR2418270A1 (sv)
GB (1) GB2017141B (sv)
GR (1) GR67627B (sv)
HU (1) HU181983B (sv)
IE (1) IE47834B1 (sv)
IS (1) IS1085B6 (sv)
IT (1) IT1112028B (sv)
MX (1) MX150357A (sv)
MY (1) MY8500334A (sv)
NL (1) NL7901397A (sv)
NO (1) NO157588C (sv)
PT (1) PT69216B (sv)
RO (1) RO78591A (sv)
SE (1) SE431344B (sv)
SG (1) SG32385G (sv)
SU (1) SU878199A3 (sv)
TR (1) TR20424A (sv)
YU (1) YU40740B (sv)
ZA (1) ZA79783B (sv)

Families Citing this family (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4124493A (en) * 1978-02-24 1978-11-07 Uop Inc. Catalytic oxidation of mercaptan in petroleum distillate including alkaline reagent and substituted ammonium halide
AU530970B2 (en) * 1978-07-24 1983-08-04 Uop Inc. Catalytic composite
WO1980000313A1 (en) * 1978-07-26 1980-03-06 Nat Res Dev Improvements in the stabilisation of hygroscopic salts
US4293442A (en) * 1979-08-10 1981-10-06 Uop Inc. Catalytic composite, method of manufacture, and process for use
US4250022A (en) * 1979-08-15 1981-02-10 Uop Inc. Catalytic oxidation of mercaptan in petroleum distillate
US4318825A (en) * 1979-08-15 1982-03-09 Frame Robert R Catalytic composite, and method of manufacture
US4260479A (en) * 1979-09-27 1981-04-07 Uop Inc. Catalytic oxidation of mercaptan in sour petroleum distillate
US4290917A (en) * 1979-10-01 1981-09-22 Uop Inc. Method of manufacturing a catalytic composite
US4324650A (en) * 1979-10-01 1982-04-13 Uop Inc. Catalytic composite and process for use
US4290916A (en) * 1979-10-01 1981-09-22 Uop Inc. Catalytic composite, method of manufacture, and process for use
US4276194A (en) * 1979-10-01 1981-06-30 Uop Inc. Catalytic composite, method of manufacture, and process for use
US4337147A (en) * 1979-11-07 1982-06-29 Uop Inc. Catalytic composite and process for use
US4295993A (en) * 1980-01-04 1981-10-20 Uop Inc. Catalytic composite, method of manufacture and process for use
US4354926A (en) * 1980-01-04 1982-10-19 Uop Inc. Catalytic composite and process for use
US4298463A (en) * 1980-07-11 1981-11-03 Uop Inc. Method of treating a sour petroleum distillate
US4320029A (en) * 1980-07-17 1982-03-16 Uop Inc. Catalytic composite, method of manufacture, and process for use
US4360421A (en) * 1980-07-17 1982-11-23 Uop Inc. Method for treating mercaptans contained in a sour petroleum distillate
US4675100A (en) * 1985-05-30 1987-06-23 Merichem Company Treatment of sour hydrocarbon distillate
US4746494A (en) * 1985-05-30 1988-05-24 Merichem Company Treatment of sour hydrocarbon distillate
US4725420A (en) * 1985-09-25 1988-02-16 Toa Nenryo Kogyo Kabushiki Kaisha Process for the production of silanes
US4753722A (en) * 1986-06-17 1988-06-28 Merichem Company Treatment of mercaptan-containing streams utilizing nitrogen based promoters
US4775462A (en) * 1987-06-22 1988-10-04 Uop Inc. Non-oxidative method of sweetening a sour hydrocarbon fraction
US4824818A (en) * 1988-02-05 1989-04-25 Uop Inc. Catalytic composite and process for mercaptan sweetening
US4897180A (en) * 1988-02-05 1990-01-30 Uop Catalytic composite and process for mercaptan sweetening
DE3814167A1 (de) * 1988-04-27 1989-11-09 Bayer Ag Verfahren zur herstellung von isocyanuratgruppen aufweisenden polyisocyanaten und ihre verwendung
AU618886B2 (en) * 1989-05-08 1992-01-09 Uop Caustic-free sweetening of sour hydrocarbon streams
US4913802A (en) * 1989-05-08 1990-04-03 Uop Process for sweetening a sour hydrocarbon fraction
US4908122A (en) * 1989-05-08 1990-03-13 Uop Process for sweetening a sour hydrocarbon fraction
US4923596A (en) * 1989-05-22 1990-05-08 Uop Use of quaternary ammonium compounds in a liquid/liquid process for sweetening a sour hydrocarbon fraction
US4929340A (en) * 1989-07-31 1990-05-29 Uop Catalyst and process for sweetening a sour hydrocarbon fraction using dipolar compounds
US5039398A (en) * 1990-03-19 1991-08-13 Uop Elimination of caustic prewash in the fixed bed sweetening of high naphthenic acids hydrocarbons
US5180484A (en) * 1990-08-27 1993-01-19 Uop Caustic free liquid/liquid process for sweeting a sour hydrocarbon fraction
US5093296A (en) * 1990-08-27 1992-03-03 Uop Caustic free liquid/liquid process for sweetening a sour hydrocarbon fraction
US5204306A (en) * 1990-08-27 1993-04-20 Uop Caustic free catalyst for use in a liquid/liquid process for sweetening a sour hydrocarbon fraction
US5273646A (en) * 1990-08-27 1993-12-28 Uop Process for improving the activity of a mercaptan oxidation catalyst
GB9023257D0 (en) * 1990-10-25 1990-12-05 British Petroleum Co Plc Desulphurisation of oil
US5200062A (en) * 1991-06-17 1993-04-06 Exxon Research And Engineering Company Process for removing elemental sulfur from fluids
US5218147A (en) * 1992-02-10 1993-06-08 Phillips Petroleum Company Stable polysulfides and process therefor
US5232887A (en) * 1992-04-02 1993-08-03 Uop Catalyst for sweetening a sour hydrocarbon fraction
US5318936A (en) * 1992-09-23 1994-06-07 Uop Catalyst for sweetening a sour hydrocarbon fraction containing metal oxide solid solution and magnesium oxide
US5413704A (en) * 1993-11-15 1995-05-09 Uop Process for sweetening a sour hydrocarbon fraction using a mixture of a supported metal chelate and a solid base
US5413701A (en) * 1993-11-15 1995-05-09 Uop Process for sweetening a sour hydrocarbon fraction using a supported metal chelate and a solid base
US6306288B1 (en) 1998-04-17 2001-10-23 Uop Llc Process for removing sulfur compounds from hydrocarbon streams
US6488840B1 (en) * 2000-04-18 2002-12-03 Exxonmobil Research And Engineering Company Mercaptan removal from petroleum streams (Law950)
US6352640B1 (en) 2000-04-18 2002-03-05 Exxonmobil Research And Engineering Company Caustic extraction of mercaptans (LAW966)
EP1285047A4 (en) * 2000-04-18 2003-07-23 Exxonmobil Res & Eng Co SELECTIVE HYDROLYSIS AND MERCAPTAN REMOVAL
US7223332B1 (en) 2003-10-21 2007-05-29 Uop Llc Reactor and process for mercaptan oxidation and separation in the same vessel

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US2560374A (en) * 1949-02-19 1951-07-10 Standard Oil Dev Co Treatment of sour petroleum distillates
US2671048A (en) * 1951-03-01 1954-03-02 Universal Oil Prod Co Treatment of hydrocarbon distillates
US2744854A (en) * 1952-06-30 1956-05-08 Universal Oil Prod Co Oxidation of mercaptans
US3164544A (en) * 1963-02-26 1965-01-05 Sun Oil Co Oxidative sweetening with base and quaternary ammonium compound
US3978137A (en) * 1975-03-14 1976-08-31 Universal Oil Products Company Oxidation of sulfur-containing compounds
US4003827A (en) * 1975-06-12 1977-01-18 Universal Oil Products Company Mercaptan conversion process for a petroleum distillate charge stock
US4028269A (en) * 1975-08-21 1977-06-07 Uop Inc. Process for the preparation of a solid bed catalyst system
US4033860A (en) * 1975-09-10 1977-07-05 Uop Inc. Mercaptan conversion process
US4070271A (en) * 1975-09-22 1978-01-24 Uop Inc. Catalytic oxidation of mercaptans and removal of naphthenic acids, catalyst toxins, and toxin precursors from petroleum distillates
ZA7740B (en) * 1976-01-14 1977-11-30 Uop Inc Improved process for sweetening sour hydrocarbon distillates
US4124531A (en) * 1977-01-03 1978-11-07 Uop Inc. Catalytic composite for the treatment of sour petroleum distillates
US4124494A (en) * 1978-01-11 1978-11-07 Uop Inc. Treating a petroleum distillate with a supported metal phthalocyanine and an alkanolamine hydroxide
US4121997A (en) * 1978-01-11 1978-10-24 Uop Inc. Treating a petroleum distillate with a supported metal phthalocyanine and an alkaline reagent containing alkanolamine halide
US4124493A (en) * 1978-02-24 1978-11-07 Uop Inc. Catalytic oxidation of mercaptan in petroleum distillate including alkaline reagent and substituted ammonium halide

Also Published As

Publication number Publication date
RO78591A (ro) 1982-03-24
US4124493A (en) 1978-11-07
US4157312A (en) 1979-06-05
PT69216B (pt) 1994-01-31
EG14010A (en) 1983-09-30
IS1085B6 (is) 1982-07-03
SG32385G (en) 1985-11-15
DK151972B (da) 1988-01-18
IE47834B1 (en) 1984-06-27
ATA142779A (de) 1982-02-15
GR67627B (sv) 1981-09-01
BG48340A3 (en) 1991-01-15
NO157588B (no) 1988-01-04
AU4423079A (en) 1979-09-13
NO157588C (no) 1988-04-13
GB2017141A (en) 1979-10-03
IS2479A7 (is) 1979-05-11
FI790618A (fi) 1979-08-25
ZA79783B (en) 1980-02-27
AU518753B2 (en) 1981-10-15
TR20424A (tr) 1981-07-02
ES477956A1 (es) 1979-10-16
DK79379A (da) 1979-08-25
SE431344B (sv) 1984-01-30
YU42179A (en) 1982-10-31
JPS54126204A (en) 1979-10-01
DK151972C (da) 1988-07-11
FI64390C (fi) 1983-11-10
PT69216A (en) 1979-03-01
DE2905581C2 (de) 1982-06-09
DE2905581A1 (de) 1979-09-06
FR2418270B1 (sv) 1982-07-16
SU878199A3 (ru) 1981-10-30
AR228127A1 (es) 1983-01-31
IT7920508A0 (it) 1979-02-23
NO790618L (no) 1979-08-27
YU40740B (en) 1986-04-30
FR2418270A1 (fr) 1979-09-21
MY8500334A (en) 1985-12-31
MX150357A (es) 1984-04-24
GB2017141B (en) 1982-10-06
IE790264L (en) 1979-08-24
HU181983B (en) 1983-11-28
BE874264A (fr) 1979-06-18
BR7901145A (pt) 1979-09-11
IT1112028B (it) 1986-01-13
JPS5511718B2 (sv) 1980-03-27
SE7901499L (sv) 1979-08-25
CA1124197A (en) 1982-05-25
NL7901397A (nl) 1979-08-28
AT368543B (de) 1982-10-25
US4156641A (en) 1979-05-29

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Owner name: UOP INC.