DE2264264A1 - Verfahren zur entfernung von ammoniak, schwefelwasserstoff und blausaeure aus diese stoffe enthaltenden gasen - Google Patents
Verfahren zur entfernung von ammoniak, schwefelwasserstoff und blausaeure aus diese stoffe enthaltenden gasenInfo
- Publication number
- DE2264264A1 DE2264264A1 DE2264264A DE2264264A DE2264264A1 DE 2264264 A1 DE2264264 A1 DE 2264264A1 DE 2264264 A DE2264264 A DE 2264264A DE 2264264 A DE2264264 A DE 2264264A DE 2264264 A1 DE2264264 A1 DE 2264264A1
- Authority
- DE
- Germany
- Prior art keywords
- metal
- solution
- salts
- acid
- ammonia
- 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.)
- Pending
Links
- 239000007789 gas Substances 0.000 title claims description 31
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims description 30
- 238000000034 method Methods 0.000 title claims description 24
- 229910021529 ammonia Inorganic materials 0.000 title claims description 12
- 239000000126 substance Substances 0.000 title claims description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title description 7
- 229910052717 sulfur Inorganic materials 0.000 title description 3
- 239000011593 sulfur Substances 0.000 title description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical class [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title 1
- VAYOSLLFUXYJDT-RDTXWAMCSA-N Lysergic acid diethylamide Chemical compound C1=CC(C=2[C@H](N(C)C[C@@H](C=2)C(=O)N(CC)CC)C2)=C3C2=CNC3=C1 VAYOSLLFUXYJDT-RDTXWAMCSA-N 0.000 title 1
- 229910052739 hydrogen Inorganic materials 0.000 title 1
- 239000001257 hydrogen Substances 0.000 title 1
- 238000002485 combustion reaction Methods 0.000 claims description 25
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 19
- 239000000243 solution Substances 0.000 claims description 17
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 claims description 14
- 150000003839 salts Chemical class 0.000 claims description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- 229910044991 metal oxide Inorganic materials 0.000 claims description 12
- 150000004706 metal oxides Chemical class 0.000 claims description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 8
- 150000008065 acid anhydrides Chemical class 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 239000007800 oxidant agent Substances 0.000 claims description 6
- 239000012266 salt solution Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical class OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 4
- 239000000571 coke Substances 0.000 claims description 4
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical class OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims description 2
- 238000002425 crystallisation Methods 0.000 claims description 2
- 230000008025 crystallization Effects 0.000 claims description 2
- 238000001704 evaporation Methods 0.000 claims description 2
- 230000008020 evaporation Effects 0.000 claims description 2
- 238000005201 scrubbing Methods 0.000 claims description 2
- 238000009833 condensation Methods 0.000 description 17
- 230000005494 condensation Effects 0.000 description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 11
- 239000000047 product Substances 0.000 description 10
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 7
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 4
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 4
- 235000011130 ammonium sulphate Nutrition 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 229910000358 iron sulfate Inorganic materials 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000001166 ammonium sulphate Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000005569 Iron sulphate Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 235000011116 calcium hydroxide Nutrition 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 125000004093 cyano group Chemical group *C#N 0.000 description 2
- 235000014413 iron hydroxide Nutrition 0.000 description 2
- FPNCFEPWJLGURZ-UHFFFAOYSA-L iron(2+);sulfite Chemical compound [Fe+2].[O-]S([O-])=O FPNCFEPWJLGURZ-UHFFFAOYSA-L 0.000 description 2
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000002815 nickel Chemical class 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- NAVJNPDLSKEXSP-UHFFFAOYSA-N Fe(CN)2 Chemical class N#C[Fe]C#N NAVJNPDLSKEXSP-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 235000014443 Pyrus communis Nutrition 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- -1 cyano compound Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 150000002506 iron compounds Chemical class 0.000 description 1
- 159000000014 iron salts Chemical class 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 150000002696 manganese Chemical class 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
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010517 secondary reaction Methods 0.000 description 1
- 150000004763 sulfides Chemical class 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- DHCDFWKWKRSZHF-UHFFFAOYSA-L thiosulfate(2-) Chemical compound [O-]S([S-])(=O)=O DHCDFWKWKRSZHF-UHFFFAOYSA-L 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/02—Preparation of sulfur; Purification
- C01B17/04—Preparation of sulfur; Purification from gaseous sulfur compounds including gaseous sulfides
- C01B17/05—Preparation of sulfur; Purification from gaseous sulfur compounds including gaseous sulfides by wet processes
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/48—Sulfur dioxide; Sulfurous acid
- C01B17/50—Preparation of sulfur dioxide
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/12—Separation of ammonia from gases and vapours
-
- 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
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2264264A DE2264264A1 (de) | 1972-12-30 | 1972-12-30 | Verfahren zur entfernung von ammoniak, schwefelwasserstoff und blausaeure aus diese stoffe enthaltenden gasen |
| IT54452/73A IT1002531B (it) | 1972-12-30 | 1973-12-20 | Processo per eliminare ammoniaca idrogeno solforato ed acido prus sico da gas contenenti queste sostanze |
| GB5958773A GB1447519A (en) | 1972-12-30 | 1973-12-21 | Process for removing impurities from a gas stream |
| CA189,033A CA981874A (en) | 1972-12-30 | 1973-12-27 | Removal of ammonia, hydrogen sulphide and hydrogen cyanide from waste gases |
| BR10246/73A BR7310246D0 (pt) | 1972-12-30 | 1973-12-28 | Acido cianidrico de gases que contem estas substancias processo para a eliminacao de amoniaco, gas, sulfidrico e |
| BE139450A BE809309A (fr) | 1972-12-30 | 1973-12-28 | Procede pour eliminer l'amoniac |
| FR7346893A FR2212294B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1972-12-30 | 1973-12-28 | |
| ZA739716A ZA739716B (en) | 1972-12-30 | 1973-12-28 | Process for the removal of ammonia,hydrogen sulphide and hydrocyanic acid from gases containing these substances |
| US05/430,233 US4013779A (en) | 1972-12-30 | 1974-01-02 | Process for removal of ammonia, hydrogen sulfide and hydrogen cyanide from gases containing these substances |
| IN930/CAL/74A IN142394B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1972-12-30 | 1974-04-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2264264A DE2264264A1 (de) | 1972-12-30 | 1972-12-30 | Verfahren zur entfernung von ammoniak, schwefelwasserstoff und blausaeure aus diese stoffe enthaltenden gasen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2264264A1 true DE2264264A1 (de) | 1974-07-04 |
Family
ID=5865842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2264264A Pending DE2264264A1 (de) | 1972-12-30 | 1972-12-30 | Verfahren zur entfernung von ammoniak, schwefelwasserstoff und blausaeure aus diese stoffe enthaltenden gasen |
Country Status (10)
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107789981A (zh) * | 2017-12-06 | 2018-03-13 | 西安科技大学 | 一种建筑火灾用烟气吸收器及烟气吸收方法 |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4073862A (en) * | 1973-08-24 | 1978-02-14 | Dr. C. Otto & Comp. G.M.B.H. | Process for removing ammonia, hydrogen sulfide and hydrocyanic acid from gases |
| DE10043176A1 (de) * | 1999-09-06 | 2001-05-31 | Ebara Corp | Verfahren und Vorrichtung zur Behandlung von Nitride enthaltende Abgasen |
| KR100418986B1 (ko) * | 1999-12-23 | 2004-02-14 | 주식회사 포스코 | 코크스 가스 정제에 있어서 황화수소와 암모니아의 제거및 티오시안산 암모늄의 회수법 |
| KR100516462B1 (ko) * | 2000-12-15 | 2005-09-23 | 주식회사 포스코 | 코크스 가스 정제공정의 티오시안 암모늄 회수방법 |
| US9364773B2 (en) | 2013-02-22 | 2016-06-14 | Anschutz Exploration Corporation | Method and system for removing hydrogen sulfide from sour oil and sour water |
| CA2843041C (en) | 2013-02-22 | 2017-06-13 | Anschutz Exploration Corporation | Method and system for removing hydrogen sulfide from sour oil and sour water |
| US9708196B2 (en) | 2013-02-22 | 2017-07-18 | Anschutz Exploration Corporation | Method and system for removing hydrogen sulfide from sour oil and sour water |
| US11440815B2 (en) | 2013-02-22 | 2022-09-13 | Anschutz Exploration Corporation | Method and system for removing hydrogen sulfide from sour oil and sour water |
| RU2566899C1 (ru) * | 2013-09-20 | 2015-10-27 | Учреждение "Стоматологический колледж профессора Рузиддинова" | Универсальный фильтрующий элемент |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US961763A (en) * | 1906-02-26 | 1910-06-21 | William Richard Cathcart | Process of purifying gas and recovering ammonia, &c., therefrom. |
| US1160836A (en) * | 1912-08-07 | 1915-11-16 | Burkheiser & Company | Purifying gases of dry distillation and recovering the by-products thereof. |
| US2988430A (en) * | 1958-02-11 | 1961-06-13 | Thompson Ramo Wooldridge Inc | Fuel dissociation chamber |
| NL6512782A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1964-12-18 | 1966-06-20 | ||
| JPS5136715B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1971-11-02 | 1976-10-09 |
-
1972
- 1972-12-30 DE DE2264264A patent/DE2264264A1/de active Pending
-
1973
- 1973-12-20 IT IT54452/73A patent/IT1002531B/it active
- 1973-12-21 GB GB5958773A patent/GB1447519A/en not_active Expired
- 1973-12-27 CA CA189,033A patent/CA981874A/en not_active Expired
- 1973-12-28 FR FR7346893A patent/FR2212294B1/fr not_active Expired
- 1973-12-28 BR BR10246/73A patent/BR7310246D0/pt unknown
- 1973-12-28 BE BE139450A patent/BE809309A/xx unknown
- 1973-12-28 ZA ZA739716A patent/ZA739716B/xx unknown
-
1974
- 1974-01-02 US US05/430,233 patent/US4013779A/en not_active Expired - Lifetime
- 1974-04-24 IN IN930/CAL/74A patent/IN142394B/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107789981A (zh) * | 2017-12-06 | 2018-03-13 | 西安科技大学 | 一种建筑火灾用烟气吸收器及烟气吸收方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| CA981874A (en) | 1976-01-20 |
| FR2212294A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1974-07-26 |
| ZA739716B (en) | 1974-11-27 |
| BE809309A (fr) | 1974-04-16 |
| FR2212294B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1978-02-10 |
| US4013779A (en) | 1977-03-22 |
| BR7310246D0 (pt) | 1974-08-15 |
| IN142394B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1977-07-02 |
| IT1002531B (it) | 1976-05-20 |
| GB1447519A (en) | 1976-08-25 |
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| Date | Code | Title | Description |
|---|---|---|---|
| OHN | Withdrawal |