DE2306175A1 - Abstromreaktor - Google Patents
AbstromreaktorInfo
- Publication number
- DE2306175A1 DE2306175A1 DE2306175A DE2306175A DE2306175A1 DE 2306175 A1 DE2306175 A1 DE 2306175A1 DE 2306175 A DE2306175 A DE 2306175A DE 2306175 A DE2306175 A DE 2306175A DE 2306175 A1 DE2306175 A1 DE 2306175A1
- Authority
- DE
- Germany
- Prior art keywords
- liquid
- base
- reaction
- reaction apparatus
- catalyst
- 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
- 239000007788 liquid Substances 0.000 claims description 123
- 238000006243 chemical reaction Methods 0.000 claims description 112
- 239000003054 catalyst Substances 0.000 claims description 95
- 238000009826 distribution Methods 0.000 claims description 61
- 238000010791 quenching Methods 0.000 claims description 45
- 239000011541 reaction mixture Substances 0.000 claims description 44
- 230000000171 quenching effect Effects 0.000 claims description 19
- 239000007921 spray Substances 0.000 claims description 14
- 239000007791 liquid phase Substances 0.000 claims description 8
- 239000011949 solid catalyst Substances 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 claims 1
- 239000007787 solid Substances 0.000 description 27
- 239000002245 particle Substances 0.000 description 22
- 239000000203 mixture Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 16
- 230000008569 process Effects 0.000 description 15
- 239000000356 contaminant Substances 0.000 description 12
- 239000011799 hole material Substances 0.000 description 12
- 239000000376 reactant Substances 0.000 description 11
- 239000012071 phase Substances 0.000 description 9
- 239000001257 hydrogen Substances 0.000 description 8
- 229910052739 hydrogen Inorganic materials 0.000 description 8
- 239000003208 petroleum Substances 0.000 description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 7
- 230000035508 accumulation Effects 0.000 description 7
- 238000009825 accumulation Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000003466 welding Methods 0.000 description 7
- 239000003575 carbonaceous material Substances 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- 230000003197 catalytic effect Effects 0.000 description 5
- 239000000295 fuel oil Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 239000000571 coke Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000012808 vapor phase Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 238000004517 catalytic hydrocracking Methods 0.000 description 2
- 239000007805 chemical reaction reactant Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000011344 liquid material Substances 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 150000004763 sulfides Chemical class 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
- B01J8/04—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds
- B01J8/0492—Feeding reactive fluids
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US00248280A US3824081A (en) | 1972-04-27 | 1972-04-27 | Vertical reactor for two-phase vapor-liquid reaction charge |
| US00248281A US3824080A (en) | 1972-04-27 | 1972-04-27 | Vertical reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2306175A1 true DE2306175A1 (de) | 1973-11-08 |
Family
ID=26939246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2306175A Pending DE2306175A1 (de) | 1972-04-27 | 1973-02-08 | Abstromreaktor |
Country Status (9)
| Country | Link |
|---|---|
| US (2) | US3824081A (enExample) |
| JP (1) | JPS5325315B2 (enExample) |
| BE (1) | BE797717A (enExample) |
| CA (2) | CA995578A (enExample) |
| DE (1) | DE2306175A1 (enExample) |
| FR (1) | FR2181853A1 (enExample) |
| GB (1) | GB1400971A (enExample) |
| IT (1) | IT982830B (enExample) |
| NL (1) | NL7303021A (enExample) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006026103A1 (de) * | 2006-06-03 | 2007-12-06 | Lurgi Ag | Reaktor zur Herstellung von C2- bis C8-Olefinen aus einem Oxgenat, Wasserdampf und einen oder mehrere Kohlenwasserstoffe enthaltendem Stoffstrom |
Families Citing this family (78)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1475082A (en) * | 1973-05-16 | 1977-06-01 | Shell Int Research | Process and apparatus for the catalyric treatment of materials containing solid contaminants |
| US3960508A (en) * | 1974-11-04 | 1976-06-01 | Exxon Research And Engineering Company | Trough-type scale traps |
| US4138327A (en) * | 1977-11-04 | 1979-02-06 | Uop Inc. | Vapor/liquid distributor for fixed-bed catalytic reaction chambers |
| US4126539A (en) * | 1977-12-05 | 1978-11-21 | Mobil Oil Corporation | Method and arrangement of apparatus for hydrogenating hydrocarbons |
| US4140625A (en) * | 1977-12-19 | 1979-02-20 | Uop Inc. | Mixed-phase distributor for fixed-bed catalytic reaction chambers |
| US4233269A (en) * | 1978-11-09 | 1980-11-11 | Exxon Research & Engineering Co. | Gas liquid distributor |
| JPS60913B2 (ja) * | 1980-03-10 | 1985-01-10 | 浜田産業株式会社 | 折曲げ加工が可能なプリント合板の製造方法 |
| US4330505A (en) * | 1980-12-04 | 1982-05-18 | Exxon Research & Engineering Co. | Hydroprocessing reactor with extended operating life |
| US4385033A (en) * | 1980-12-04 | 1983-05-24 | Exxon Research And Engineering Co. | Reactor for fouling prone feeds |
| US4380529A (en) * | 1980-12-04 | 1983-04-19 | Exxon Research And Engineering Co. | Hydroprocessing reactor with extended operating life |
| US4462966A (en) * | 1982-05-13 | 1984-07-31 | Phillips Petroleum Company | Fluid distributor means |
| US4743433A (en) * | 1982-10-15 | 1988-05-10 | Mobil Oil Corporation | Catalytic reactor system |
| US4579647A (en) * | 1982-10-15 | 1986-04-01 | Mobil Oil Corporation | Multiphase catalytic process with improved liquid distribution |
| JPS5963374U (ja) * | 1982-10-20 | 1984-04-26 | 小沢 良三 | ボ−ル紙と木質材との鎌倉彫式積層材 |
| US4472325A (en) * | 1983-06-13 | 1984-09-18 | The Dow Chemical Company | Liquid distributor apparatus for a vapor-liquid contact column |
| US4788040A (en) * | 1984-02-03 | 1988-11-29 | Mobil Oil Corporation | Inlet distributor for fixed bed catalytic reactor |
| US4877587A (en) * | 1984-08-24 | 1989-10-31 | Union Carbide Chemicals And Plastics Company Inc. | Fluidized bed polymerization reactors |
| US4933149A (en) * | 1984-08-24 | 1990-06-12 | Union Carbide Chemicals And Plastics Company Inc. | Fluidized bed polymerization reactors |
| JPS61100595U (enExample) * | 1984-12-07 | 1986-06-27 | ||
| JPH037200Y2 (enExample) * | 1984-12-07 | 1991-02-22 | ||
| US4634459A (en) * | 1985-02-12 | 1987-01-06 | FEV Forschungsgesellschaft fur Energie-Technik und Verbrennungsmotoren GmbH | Particle filtration and removal system |
| US4669890A (en) * | 1985-03-25 | 1987-06-02 | Uop Inc. | Mixing device for vertical flow fluid-solid contacting |
| US4642223A (en) * | 1985-04-02 | 1987-02-10 | Alberta Energy Company Ltd. | Method for removing spent catalyst from a reactor tower and assembly for facilitating same |
| US4937051A (en) * | 1985-11-07 | 1990-06-26 | Mobil Oil Corporation | Catalytic reactor with liquid recycle |
| US5756055A (en) * | 1989-07-31 | 1998-05-26 | Uop | Two phase fluid heat exhange |
| US5403560A (en) * | 1993-05-13 | 1995-04-04 | Texaco Inc. | Fluids mixing and distributing apparatus |
| US5403561A (en) * | 1993-08-27 | 1995-04-04 | Exxon Research & Engineering Co. | Mixed phase fixed bed reactor distributor |
| US5409672A (en) * | 1993-12-17 | 1995-04-25 | Uop | Plug flow reaction apparatus with high shear |
| JP3676437B2 (ja) * | 1995-07-10 | 2005-07-27 | 新日本石油株式会社 | 反応塔 |
| FR2740052B1 (fr) * | 1995-10-20 | 1997-12-19 | Inst Francais Du Petrole | Dispositif de collecte et de distribution d'un fluide principal pour minimiser les differences de temps de parcours |
| FR2740054B1 (fr) * | 1995-10-20 | 1997-12-19 | Inst Francais Du Petrole | Chambre de melange munie d'orifices d'injection et/ou de soutirage pour optimiser la fonction de melange |
| AR004048A1 (es) * | 1995-10-20 | 1998-09-30 | Inst Francais Du Petrole | Un dispositivo para distribuir, mezclar, y/o extraer varios fluidos en procesos de cromatografia y una columna cromatrografica que utiliza dicho dispositivo |
| US6881387B1 (en) * | 1996-06-04 | 2005-04-19 | Fluor Corporation | Reactor distribution apparatus and quench zone mixing apparatus |
| US5989502A (en) * | 1996-06-04 | 1999-11-23 | Fluor Corporation | Reactor distribution apparatus and quench zone mixing apparatus |
| US5837208A (en) * | 1996-06-12 | 1998-11-17 | Uop | Hydroprocessing reactor mixer/distributor |
| RU2125484C1 (ru) * | 1996-09-10 | 1999-01-27 | Акционерное общество "Ново-Уфимский нефтеперерабатывающий завод" | Реактор для газожидкостных смесей |
| ES2251010T5 (es) * | 1996-12-19 | 2011-04-26 | Haldor Topsoe A/S | Dispositivo de distribución de dos fases de corriente descendente. |
| FR2807673B1 (fr) * | 2000-04-17 | 2003-07-04 | Inst Francais Du Petrole | Dispositif de distribution d'un melange polyphasique sur un lit de solide granulaire comportant un element brise-jet poreux |
| WO2002070120A1 (en) * | 2001-03-01 | 2002-09-12 | Shell Internationale Research Maatschappij B.V. | Self-supporting reactor internal |
| US7112312B2 (en) * | 2001-04-02 | 2006-09-26 | Tai-Sheng Chou | Quench box for a multi-bed, mixed-phase cocurrent downflow fixed-bed reactor |
| US6617871B2 (en) * | 2001-07-09 | 2003-09-09 | Rambus Inc. | Methods and apparatus for bi-directional signaling |
| JP4173708B2 (ja) * | 2002-09-12 | 2008-10-29 | 株式会社日本触媒 | 排水の湿式酸化処理法および装置 |
| US6769672B2 (en) * | 2002-10-08 | 2004-08-03 | Uop Llc | Two-phase distribution apparatus and process |
| US7276215B2 (en) * | 2002-11-08 | 2007-10-02 | Morten Muller Ltd. Aps | Mixing device for two-phase concurrent vessels |
| EP1663467B1 (en) * | 2003-08-18 | 2010-02-24 | Shell Internationale Researchmaatschappij B.V. | Distribution device |
| KR101292599B1 (ko) * | 2005-02-25 | 2013-08-05 | 쉘 인터내셔날 리써취 마트샤피지 비.브이. | 반응기 용기의 내부 구성요소를 위한 지지 시스템 |
| FR2889973B1 (fr) | 2005-08-26 | 2007-11-09 | Inst Francais Du Petrole | Plateau filtrant pour reacteur a lit a co courant descendant de gaz liquide |
| US20080257147A1 (en) * | 2005-12-06 | 2008-10-23 | Johnson Matthey Plc | Gas Distributor |
| US20100018248A1 (en) * | 2007-01-19 | 2010-01-28 | Eleanor R Fieler | Controlled Freeze Zone Tower |
| US20090074656A1 (en) * | 2007-09-18 | 2009-03-19 | Calvin Billings | Process for production of hydrogen from coal and other fossil fuels |
| BRPI0703901B1 (pt) | 2007-10-10 | 2016-03-22 | Petróleo Brasileiro S A Petrobras | dispositivo e processo para distribuição de cargas mistas sobre leitos fixos de catalisador em reatores de fluxo descendente |
| US8181942B2 (en) * | 2008-06-26 | 2012-05-22 | Uop Llc | Liquid redistribution device for multibed reactors |
| US8177198B2 (en) * | 2008-06-26 | 2012-05-15 | Uop Llc | Quench zone design using spray nozzles |
| JP5632455B2 (ja) | 2009-04-20 | 2014-11-26 | エクソンモービル アップストリーム リサーチ カンパニー | 炭化水素ガス流から酸性ガスを除去する極低温システム及び酸性ガスの除去方法 |
| US8202498B2 (en) * | 2010-07-19 | 2012-06-19 | Chevron U.S.A. Inc. | Multiphase contact and distribution apparatus for hydroprocessing |
| US8517353B2 (en) * | 2010-09-27 | 2013-08-27 | Uop Llc | Apparatus and process for distributing vapor and liquid phases |
| US8523152B2 (en) * | 2010-12-02 | 2013-09-03 | Qed Environmental Systems, Inc. | Removable fluid downcomer with seal pot pan for volatile organic compound removal device |
| US9964352B2 (en) | 2012-03-21 | 2018-05-08 | Exxonmobil Upstream Research Company | Separating carbon dioxide and ethane from a mixed stream |
| EA034637B1 (ru) | 2013-02-19 | 2020-03-02 | Мортен Мюллер Лтд. Апс | Смешивающее устройство с тангенциальными впусками для емкостей с двухфазным потоком |
| WO2015084494A2 (en) | 2013-12-06 | 2015-06-11 | Exxonmobil Upstream Research Company | Method and device for separating hydrocarbons and contaminants with a spray assembly |
| AU2014357668B2 (en) | 2013-12-06 | 2017-05-25 | Exxonmobil Upstream Research Company | Method and system of modifying a liquid level during start-up operations |
| US9752827B2 (en) | 2013-12-06 | 2017-09-05 | Exxonmobil Upstream Research Company | Method and system of maintaining a liquid level in a distillation tower |
| AU2014357666B2 (en) | 2013-12-06 | 2017-08-10 | Exxonmobil Upstream Research Company | Method and system of dehydrating a feed stream processed in a distillation tower |
| US9874395B2 (en) | 2013-12-06 | 2018-01-23 | Exxonmobil Upstream Research Company | Method and system for preventing accumulation of solids in a distillation tower |
| US9562719B2 (en) | 2013-12-06 | 2017-02-07 | Exxonmobil Upstream Research Company | Method of removing solids by modifying a liquid level in a distillation tower |
| CA2924402C (en) | 2013-12-06 | 2017-11-21 | Exxonmobil Upstream Research Company | Method and device for separating a feed stream using radiation detectors |
| WO2015084500A1 (en) | 2013-12-06 | 2015-06-11 | Exxonmobil Upstream Research Company | Method and device for separating hydrocarbons and contaminants with a heating mechanism to destabilize and/or prevent adhesion of solids |
| MY177942A (en) | 2013-12-06 | 2020-09-28 | Exxonmobil Upstream Res Co | Method and system for separating a feed stream with a feed stream distribution mechanism |
| EP2918332A1 (en) * | 2014-03-14 | 2015-09-16 | Morten Müller Ltd., ApS | Scale collection and predistribution tray for vessel with downwards two-phase flow |
| US10495379B2 (en) | 2015-02-27 | 2019-12-03 | Exxonmobil Upstream Research Company | Reducing refrigeration and dehydration load for a feed stream entering a cryogenic distillation process |
| WO2017048346A1 (en) | 2015-09-18 | 2017-03-23 | Exxonmobil Upstream Research Company | Heating component to reduce solidification in a cryogenic distillation system |
| AU2016327820B2 (en) | 2015-09-24 | 2019-08-01 | Exxonmobil Upstream Research Company | Treatment plant for hydrocarbon gas having variable contaminant levels |
| US10323495B2 (en) | 2016-03-30 | 2019-06-18 | Exxonmobil Upstream Research Company | Self-sourced reservoir fluid for enhanced oil recovery |
| SA118400251B1 (ar) * | 2018-02-23 | 2021-12-06 | انديان اويل كوربوريشن ليمتد | توزيع مُحسّن لخليط مائع متعدد الأطوار |
| CN108212026A (zh) * | 2018-04-08 | 2018-06-29 | 合润科技有限公司 | 一种生产聚α烯烃用的加氢反应器 |
| WO2020005552A1 (en) | 2018-06-29 | 2020-01-02 | Exxonmobil Upstream Research Company | Hybrid tray for introducing a low co2 feed stream into a distillation tower |
| WO2020005553A1 (en) | 2018-06-29 | 2020-01-02 | Exxonmobil Upstream Research Company (Emhc-N1.4A.607) | Mixing and heat integration of melt tray liquids in a cryogenic distillation tower |
| CN116330521B (zh) * | 2023-04-04 | 2024-09-24 | 湖州讯腾电缆材料科技有限公司 | 一种fep黑色母粒原料制备系统及工艺 |
-
1972
- 1972-04-27 US US00248280A patent/US3824081A/en not_active Expired - Lifetime
- 1972-04-27 US US00248281A patent/US3824080A/en not_active Expired - Lifetime
-
1973
- 1973-02-08 DE DE2306175A patent/DE2306175A1/de active Pending
- 1973-02-22 GB GB872473A patent/GB1400971A/en not_active Expired
- 1973-03-05 NL NL7303021A patent/NL7303021A/xx not_active Application Discontinuation
- 1973-03-16 CA CA166,261A patent/CA995578A/en not_active Expired
- 1973-03-16 CA CA166,262A patent/CA993788A/en not_active Expired
- 1973-03-30 FR FR7311511A patent/FR2181853A1/fr not_active Withdrawn
- 1973-04-03 BE BE129597A patent/BE797717A/xx unknown
- 1973-04-25 JP JP4634773A patent/JPS5325315B2/ja not_active Expired
- 1973-04-26 IT IT23421/73A patent/IT982830B/it active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006026103A1 (de) * | 2006-06-03 | 2007-12-06 | Lurgi Ag | Reaktor zur Herstellung von C2- bis C8-Olefinen aus einem Oxgenat, Wasserdampf und einen oder mehrere Kohlenwasserstoffe enthaltendem Stoffstrom |
| DE102006026103B4 (de) * | 2006-06-03 | 2010-05-06 | Lurgi Gmbh | Reaktor zur Herstellung von C2- bis C8- Olefinen aus einem Oxygenat, Wasserdampf und einen oder mehrere Kohlenwasserstoffe enthaltendem Stoffstrom |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2181853A1 (enExample) | 1973-12-07 |
| JPS5325315B2 (enExample) | 1978-07-26 |
| BE797717A (fr) | 1973-10-03 |
| US3824081A (en) | 1974-07-16 |
| NL7303021A (enExample) | 1973-10-30 |
| CA993788A (en) | 1976-07-27 |
| US3824080A (en) | 1974-07-16 |
| IT982830B (it) | 1974-10-21 |
| GB1400971A (en) | 1975-07-16 |
| JPS4947262A (enExample) | 1974-05-07 |
| CA995578A (en) | 1976-08-24 |
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