FR2754826B1 - Procede d'hydrocraquage doux de coupes petrolieres avec un catalyseur contenant au moins deux zeolithes y desaluminees - Google Patents

Procede d'hydrocraquage doux de coupes petrolieres avec un catalyseur contenant au moins deux zeolithes y desaluminees

Info

Publication number
FR2754826B1
FR2754826B1 FR9612958A FR9612958A FR2754826B1 FR 2754826 B1 FR2754826 B1 FR 2754826B1 FR 9612958 A FR9612958 A FR 9612958A FR 9612958 A FR9612958 A FR 9612958A FR 2754826 B1 FR2754826 B1 FR 2754826B1
Authority
FR
France
Prior art keywords
desaluminated
zeoliths
catalyst containing
oil cuttings
soft hydrocracking
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.)
Expired - Lifetime
Application number
FR9612958A
Other languages
English (en)
French (fr)
Other versions
FR2754826A1 (fr
Inventor
Samuel Mignard
Marchal Nathalie George
Eric Benazzi
Slavik Kasztelan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IFP Energies Nouvelles IFPEN
Original Assignee
IFP Energies Nouvelles IFPEN
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 IFP Energies Nouvelles IFPEN filed Critical IFP Energies Nouvelles IFPEN
Priority to FR9612958A priority Critical patent/FR2754826B1/fr
Priority to DE69711804T priority patent/DE69711804T2/de
Priority to ES97402445T priority patent/ES2175301T3/es
Priority to EP97402445A priority patent/EP0838516B1/fr
Priority to US08/955,623 priority patent/US5954947A/en
Priority to JP28975997A priority patent/JP3994237B2/ja
Priority to KR1019970054126A priority patent/KR100504448B1/ko
Priority to BR9705240A priority patent/BR9705240A/pt
Publication of FR2754826A1 publication Critical patent/FR2754826A1/fr
Application granted granted Critical
Publication of FR2754826B1 publication Critical patent/FR2754826B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • C10G45/00—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds
    • C10G45/02—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing
    • C10G45/04—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing characterised by the catalyst used
    • C10G45/12—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing characterised by the catalyst used containing crystalline alumino-silicates, e.g. molecular sieves
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/80—Mixtures of different zeolites
    • 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
    • C10G45/00—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds
    • C10G45/02—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing
    • C10G45/04—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing characterised by the catalyst used
    • C10G45/06—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing characterised by the catalyst used containing nickel or cobalt metal, or compounds thereof
    • C10G45/08—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing characterised by the catalyst used containing nickel or cobalt metal, or compounds thereof in combination with chromium, molybdenum, or tungsten metals, or compounds thereof
    • 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
    • C10G47/00—Cracking of hydrocarbon oils, in the presence of hydrogen or hydrogen- generating compounds, to obtain lower boiling fractions
    • C10G47/02—Cracking of hydrocarbon oils, in the presence of hydrogen or hydrogen- generating compounds, to obtain lower boiling fractions characterised by the catalyst used
    • C10G47/10—Cracking of hydrocarbon oils, in the presence of hydrogen or hydrogen- generating compounds, to obtain lower boiling fractions characterised by the catalyst used with catalysts deposited on a carrier
    • C10G47/12—Inorganic carriers
    • C10G47/16—Crystalline alumino-silicate carriers
    • 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
    • C10G47/00—Cracking of hydrocarbon oils, in the presence of hydrogen or hydrogen- generating compounds, to obtain lower boiling fractions
    • C10G47/02—Cracking of hydrocarbon oils, in the presence of hydrogen or hydrogen- generating compounds, to obtain lower boiling fractions characterised by the catalyst used
    • C10G47/10—Cracking of hydrocarbon oils, in the presence of hydrogen or hydrogen- generating compounds, to obtain lower boiling fractions characterised by the catalyst used with catalysts deposited on a carrier
    • C10G47/12—Inorganic carriers
    • C10G47/16—Crystalline alumino-silicate carriers
    • C10G47/20—Crystalline alumino-silicate carriers the catalyst containing other metals or compounds thereof
    • 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
    • B01J2229/00—Aspects of molecular sieve catalysts not covered by B01J29/00
    • B01J2229/10—After treatment, characterised by the effect to be obtained
    • B01J2229/16—After treatment, characterised by the effect to be obtained to increase the Si/Al ratio; Dealumination
    • 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
    • B01J2229/00—Aspects of molecular sieve catalysts not covered by B01J29/00
    • B01J2229/10—After treatment, characterised by the effect to be obtained
    • B01J2229/26—After treatment, characterised by the effect to be obtained to stabilize the total catalyst structure
    • 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
    • B01J2229/00—Aspects of molecular sieve catalysts not covered by B01J29/00
    • B01J2229/30—After treatment, characterised by the means used
    • B01J2229/42—Addition of matrix or binder particles
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/08—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the faujasite type, e.g. type X or Y
    • B01J29/084—Y-type faujasite
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/40—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively
    • 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
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/40—Characteristics of the process deviating from typical ways of processing
    • C10G2300/4006—Temperature
    • 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
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/40—Characteristics of the process deviating from typical ways of processing
    • C10G2300/4012—Pressure

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Catalysts (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
FR9612958A 1996-10-22 1996-10-22 Procede d'hydrocraquage doux de coupes petrolieres avec un catalyseur contenant au moins deux zeolithes y desaluminees Expired - Lifetime FR2754826B1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
FR9612958A FR2754826B1 (fr) 1996-10-22 1996-10-22 Procede d'hydrocraquage doux de coupes petrolieres avec un catalyseur contenant au moins deux zeolithes y desaluminees
ES97402445T ES2175301T3 (es) 1996-10-22 1997-10-16 Procedimiento para la hidroconversion suave de fracciones petroleras con un catalizador que comprende al menos dos zeolitas y desaluminadas.
EP97402445A EP0838516B1 (fr) 1996-10-22 1997-10-16 Procédé d'hydrocraquage doux de coupes pétrolières avec un catalyseur contenant au moins deux zeolithes y desaluminées
DE69711804T DE69711804T2 (de) 1996-10-22 1997-10-16 Mildes hydrokracken von Erdölfraktionen unter Verwendung eines zwei dealuminierte Y-Zeolithen enthaltende Katalysators
US08/955,623 US5954947A (en) 1996-10-22 1997-10-22 Process for mild hydrocracking of petroleum cuts using a catalyst containing at least two dealuminated Y zeolites
JP28975997A JP3994237B2 (ja) 1996-10-22 1997-10-22 脱アルミニウム化された少なくとも２つのゼオライトｙを含む触媒を用いる石油留分の温和な水素化クラッキング方法
KR1019970054126A KR100504448B1 (ko) 1996-10-22 1997-10-22 탈알루미네이트화된2이상의y제올라이트를포함하는촉매를사용한석유유분의온화한수소분해증류방법
BR9705240A BR9705240A (pt) 1996-10-22 1997-10-22 Processo de hidrocraqueamento doce de cortes petrolíferos com um catalisador que contém pelo menos dois zeólitos y desaluminados

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9612958A FR2754826B1 (fr) 1996-10-22 1996-10-22 Procede d'hydrocraquage doux de coupes petrolieres avec un catalyseur contenant au moins deux zeolithes y desaluminees

Publications (2)

Publication Number Publication Date
FR2754826A1 FR2754826A1 (fr) 1998-04-24
FR2754826B1 true FR2754826B1 (fr) 1998-12-11

Family

ID=9496974

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9612958A Expired - Lifetime FR2754826B1 (fr) 1996-10-22 1996-10-22 Procede d'hydrocraquage doux de coupes petrolieres avec un catalyseur contenant au moins deux zeolithes y desaluminees

Country Status (8)

Country Link
US (1) US5954947A (enExample)
EP (1) EP0838516B1 (enExample)
JP (1) JP3994237B2 (enExample)
KR (1) KR100504448B1 (enExample)
BR (1) BR9705240A (enExample)
DE (1) DE69711804T2 (enExample)
ES (1) ES2175301T3 (enExample)
FR (1) FR2754826B1 (enExample)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2777290B1 (fr) * 1998-04-09 2000-05-12 Inst Francais Du Petrole Procede d'amelioration de l'indice de cetane d'une coupe gasoil
CN1096296C (zh) 1998-11-13 2002-12-18 中国石油化工集团公司 一种生产中间馏分油的加氢裂化催化剂及其制备
US20020144928A1 (en) * 2001-01-29 2002-10-10 Bronshtein Alexander P. Energy efficient process for converting refinery and petroleum-based waste to standard fuels
US7611689B2 (en) * 2004-09-24 2009-11-03 Shell Oil Company Faujasite zeolite, its preparation and use in hydrocracking
CN101468317B (zh) * 2007-12-25 2011-01-19 中国石油化工股份有限公司 一种加氢裂化催化剂及其制备方法
US20090272674A1 (en) * 2008-04-30 2009-11-05 Ying Zheng Nano zeolite containing hydrotreating catalyst and method of preparation
JP5940935B2 (ja) * 2012-08-17 2016-06-29 日揮触媒化成株式会社 炭化水素接触分解用触媒
US10603657B2 (en) 2016-04-11 2020-03-31 Saudi Arabian Oil Company Nano-sized zeolite supported catalysts and methods for their production
US11084992B2 (en) 2016-06-02 2021-08-10 Saudi Arabian Oil Company Systems and methods for upgrading heavy oils
US10301556B2 (en) 2016-08-24 2019-05-28 Saudi Arabian Oil Company Systems and methods for the conversion of feedstock hydrocarbons to petrochemical products
US10689587B2 (en) 2017-04-26 2020-06-23 Saudi Arabian Oil Company Systems and processes for conversion of crude oil
JP2020527638A (ja) 2017-07-17 2020-09-10 サウジ アラビアン オイル カンパニーＳａｕｄｉ Ａｒａｂｉａｎ Ｏｉｌ Ｃｏｍｐａｎｙ 油アップグレードに続く蒸気分解により重質油を処理するためのシステムおよび方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA964255A (en) * 1970-12-23 1975-03-11 Geoffrey E. Dolbear Cracking catalyst containing nickel and magnesium exchanged zeolites
US3830725A (en) * 1970-12-23 1974-08-20 Grace W R & Co Cracking hydrocarbons with catalysts containing nickel and magnesium exchanged zeolites
CA1046484A (en) * 1976-04-12 1979-01-16 Elroy M. Gladrow Hydrocarbon conversion catalyst containing a co oxidation promoter
US4097410A (en) * 1976-06-23 1978-06-27 Exxon Research & Engineering Co. Hydrocarbon conversion catalyst containing a CO oxidation promoter
US4477336A (en) * 1982-03-02 1984-10-16 Harshaw/Filtrol Partnership Acid dealuminated Y-zeolite and cracking process employing the same
EP0287718B1 (en) * 1987-04-21 1991-03-06 Uop Middle distillate - producing hydrocracking catalyst
US4661239A (en) * 1985-07-02 1987-04-28 Uop Inc. Middle distillate producing hydrocracking process
KR900004505B1 (ko) * 1987-04-27 1990-06-28 유오피 인코오포레이티드 중간유분을 생성하는 수소화 크래킹 촉매
US4925546A (en) * 1989-09-12 1990-05-15 Amoco Corporation Hydrocracking process
US5275720A (en) * 1990-11-30 1994-01-04 Union Oil Company Of California Gasoline hydrocracking catalyst and process
CA2143893C (en) * 1994-03-07 2000-11-14 Nicolaas Van Dijk Process for the hydrocracking of a hydrocarbonaceous feedstock
FR2754742B1 (fr) * 1996-10-22 1998-12-11 Inst Francais Du Petrole Catalyseur contenant au moins deux zeolithes y desaluminees et procede d'hydroconversion conventionnelle de coupes petrolieres avec ce catalyseur

Also Published As

Publication number Publication date
JP3994237B2 (ja) 2007-10-17
KR19980033043A (ko) 1998-07-25
US5954947A (en) 1999-09-21
EP0838516A1 (fr) 1998-04-29
JPH10130661A (ja) 1998-05-19
DE69711804T2 (de) 2002-08-08
ES2175301T3 (es) 2002-11-16
EP0838516B1 (fr) 2002-04-10
KR100504448B1 (ko) 2005-10-31
BR9705240A (pt) 1999-05-25
DE69711804D1 (de) 2002-05-16
FR2754826A1 (fr) 1998-04-24

Similar Documents

Publication Publication Date Title
US5435400B1 (en) Lateral well drilling
EP0701277A3 (en) Connection method using a porous insulator, with a reduction in capacitance between interconnects
EP0678651A3 (en) Drive element for connection to a drill bit.
FR2799246B1 (fr) Installation d'embrayage multiple avec au moins un dispostif de palier
SV1996000005A (es) Quinazolinonas bisustituidas en 2,8
FR2754826B1 (fr) Procede d'hydrocraquage doux de coupes petrolieres avec un catalyseur contenant au moins deux zeolithes y desaluminees
FR2769856B1 (fr) Catalyseur et procede d'hydrocraquage de coupes hydrocarbonees
FR2754742B1 (fr) Catalyseur contenant au moins deux zeolithes y desaluminees et procede d'hydroconversion conventionnelle de coupes petrolieres avec ce catalyseur
FR2810930B1 (fr) Procede de gestion de la cinematique d'un siege a assise mobile
IT1309060B1 (it) Dispositivo di ventilazione per l'abitacolo di un veicolo.
DZ2642A1 (fr) Hydrohalogénures 1'-Ä4-Ä1-(fluorphényl)-1h-indole-3ylÜ-1-butylÜ-spiroÄisobenzufuran-1(3h),4'-pipéridineÜ.
FR2701684B1 (fr) Ensemble d'amenée de fluide pour véhicule d'exploitation.
FR2749779B1 (fr) Procede de presulfuration de catalyseurs d'hydrotraitement
GB2297775B (en) Drilling fluid
GB2297774B (en) Drilling fluid
FR2712249B1 (fr) Charpente de support de la carrosserie d'un véhicule.
FR2759433B1 (fr) Roulement a billes pour mouvements longitudinaux, et procede de definition d'un tel roulement
IT230541Y1 (it) Struttura di livella a bolla, particolarmente per l'edilizia,ad impiego migliorato
FR2701486B1 (fr) Procédé et dispositif de contrôle de l'activité biologique d'une culture de microorganismes.
FR2738013B1 (fr) Procede d'hydrotraitement profond de coupes petrolieres
FR2762018B1 (fr) Procede pour la protection anodique d'un dispositif de suspension
FR2718727B1 (fr) Carbure de tungstène non steochiométrique.
FR2716730B1 (fr) Dispositif réducteur-régulateur de pression d'un fluide.
FR2742792B1 (fr) Profile d'etancheite, en particulier pour vitrage
GB2319047B (en) Drilling fluid

Legal Events

Date Code Title Description
CD Change of name or company name
PLFP Fee payment

Year of fee payment: 20