WO1990006170A1 - Methode d'adjonction d'un compose odorant a des gaz - Google Patents

Methode d'adjonction d'un compose odorant a des gaz Download PDF

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Publication number
WO1990006170A1
WO1990006170A1 PCT/SE1989/000698 SE8900698W WO9006170A1 WO 1990006170 A1 WO1990006170 A1 WO 1990006170A1 SE 8900698 W SE8900698 W SE 8900698W WO 9006170 A1 WO9006170 A1 WO 9006170A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas
consumer
malodorant
master
distributed
Prior art date
Application number
PCT/SE1989/000698
Other languages
English (en)
Inventor
Timo Suominen
Erik SMÅRS
Original Assignee
Aga Ab
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 Aga Ab filed Critical Aga Ab
Publication of WO1990006170A1 publication Critical patent/WO1990006170A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
    • C10L3/003—Additives for gaseous fuels
    • C10L3/006—Additives for gaseous fuels detectable by the senses

Definitions

  • the present invention relates to a method of adding a malodorant to a gas distributed to a point of consumption, the ambient surroundings of the distribution system or of the point of 5 consumption being made aware of the existence of a fire, explosion or other risk if, as a result of leakage, carelessness or by other means, the ambient air contains a certain concentration of the gas in question.
  • gases which may be odorified according to the present invention, mention may be made of oxygen 0 which, if the air outside the distribution system and point of use is enriched with oxygen, may cause extremely severe fire or explosion accidents.
  • combustion gases such as natural gas, propane, butane, town gas (also known as coal gas), and so on, which, on becoming mixed into the air, may also cause 5 fire and explosion accidents.
  • odorless toxic gases or more or less inert gases are odorless toxic gases or more or less inert gases. In the event of major leakage, these latter may displace the oxygen of the air, with the result that the risk of suffocation becomes imminent.
  • BACKGROUND ART 0 Finnish patent application No. 870146 describes a method of improvi-ng the method of adding a malodorant to oxygen gas so as to render the ambient surroundings aware of the existence of an explosion risk if oxygen enrichment of the air were to occur, by eliminating handling by the user of the toxic malodorant and those 5 risks of explosion implicit in the addition of malodorants.
  • a concentrated gas so-called master gas
  • the master gas is added to the oxygen gas which is distributed to the consumer in such a volume that the malodorant in the consumer gas is present in a concentration of between 5 and 50 ppm.
  • the master gas were to contain only oxygen and the malodorant, for example dimethyl sulphide, D S, problems may occur in filling the master gas containers. It may then be unavoidable that a certain part of the filling procedure will give rise to a concentration region in which the mixture ' is combustible, at least in a part of the gas container. The risk of ignition and explosion may then be imminent.
  • the malodorant for example dimethyl sulphide, D S
  • the object of the present invention is to realize a method of production for master gas according to which the above-outlined drawbacks are obviated and which may also be employed for odorization of other gases than oxygen, such as natural gas, other combustion gases such as town gas and propane etc., toxic gases, inert gases and others. SOLUTION
  • the method according to the present invention is essentially characterized in that the malodorant in the form of an organic sulphur or other compound, such as for example dimethyl sulphide, tetrahydrothiophene or methyl ercaptan, is dissolved in carbon dioxide, propane, butane, sulphur hexafluoride, dinitrogen oxide or other condensable gas in a pressure vessel in which the solution is present substantially in the liquid phase; and that the solution, the master gas, is extracted from the liquid phase, is vapourized and added to the gas intended for odorization which is to be distributed to the consumer.
  • an organic sulphur or other compound such as for example dimethyl sulphide, tetrahydrothiophene or methyl ercaptan
  • the method according to the present invention is further characterized in that when the malodorant consists of dimethyl sulphide, this is employed in a concentration of between 1 and 15%; and that such a volume of the extracted vapourized solution is supplied to the consumer gas that the malodorant is present in a concentration of between 5 and 50 ppm.
  • the liquid gas, for example carbon dioxide, in which the malodorant is dissolved is stored at ambient temperature in a pressure vessel in that the malodorant, for example dimethyl sulphide, is also soluble in, for example, liquid carbon dioxide at low temperatures. No separation of the substances will take place even if the solution is cooled during transport and winter storage to such extreme temperatures as -40 °C.
  • a gas mixer of more or less conventional type is coupled in upstream of the inlet to the pipe network. In this mixer, the consumer gas and the vaporized solution are mixed to the desired proportion.
  • the vaporized solution is first fed into the container in such a volume that, when the consumer gas is thereafter filled to the desired pressure, the concentration of malodorant is at the desired level .
  • the consumer gas which is supplied with malodorant in accordance with the method described in the foregoing will include, in addition to the odoury vector, an insignificant concentration of the major component of the master gas, for example carbon dioxide.
  • the master gas has a malodorant concentration of, for example, 5% and admixture is effected with one part master gas to 2,500 parts consumer gas, the concentration of malodorant will be 20 ppm and the concentration of carbon dioxide 0.04 per cent. This is of no consequence whatever in cases involving combustion gases.
  • this concentration of carbon dioxide will not have any injurious effect either.
  • a master gas which includes a malodorant in the form of an organic sulphur or other compound such as, for example, dimethyl sulphide and which may also be stored and transported at low temperatures without any risk of condensation of the malodorant.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Fats And Perfumes (AREA)
  • Gas Separation By Absorption (AREA)
  • Treating Waste Gases (AREA)

Abstract

L'invention a pour objet une méthode d'adjonction d'un composé malodorant à un gaz de consommation qui est distribué à un lieu de consommation, afin de rendre conscient l'entourage du risque éventuel d'accident lors d'une fuite de gaz de consommation dans l'air, l'emploi d'un tel procédé en utilisant un gaz concentré, appellé gaz principal, qui peut être condensé par le composé malodorant lors du transport et le stockage du gaz principal à des températures inférieures. Le composé malodorant, en forme d'un soufre organique ou d'un autre composé, est dissout dans du dioxyde de carbone liquide ou un autre gaz condensable dans un récipient de pression, à partir duquel on obtient une solution comprenant essentiellement une phase gazeuse et une phase liquide. On retire la solution, le gaz principal, de la phase liquide, on la vaporise et ensuite on l'ajoute au gaz de consommation qui est distribué au consommateur.
PCT/SE1989/000698 1988-11-30 1989-11-30 Methode d'adjonction d'un compose odorant a des gaz WO1990006170A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI885571A FI93270C (fi) 1988-11-30 1988-11-30 Menetelmä hajusteen lisäämiseksi happikaasuun
FI885571 1988-11-30
CA002009716A CA2009716A1 (fr) 1988-11-30 1990-02-09 Methode d'addition d'un agent malodorant aux gaz

Publications (1)

Publication Number Publication Date
WO1990006170A1 true WO1990006170A1 (fr) 1990-06-14

Family

ID=25673941

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1989/000698 WO1990006170A1 (fr) 1988-11-30 1989-11-30 Methode d'adjonction d'un compose odorant a des gaz

Country Status (4)

Country Link
AU (1) AU4656189A (fr)
CA (1) CA2009716A1 (fr)
FI (1) FI93270C (fr)
WO (1) WO1990006170A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991017817A1 (fr) * 1990-05-22 1991-11-28 Aga Ab Adjonction d'une substance malodorante dans un gaz ou dans un melange de gaz liquide
FR2712599A1 (fr) * 1993-11-19 1995-05-24 Air Liquide Composition comprenant un gaz inerte.
WO1995033020A1 (fr) * 1994-05-27 1995-12-07 Erik Smårs Konsult Aktiebolag Apport de substances odorantes a des gaz de consommation dans des conduits d'alimentation
US5632295A (en) * 1992-06-16 1997-05-27 Aga Aktiebolag Method and an apparatus for adding a melodorant to a consumer gas
DE19748212A1 (de) * 1997-10-31 1999-05-06 Messer Griesheim Gmbh Odorierung von Schutzgasen
WO2008004089A2 (fr) * 2006-07-04 2008-01-10 Angelo Mapelli Procédé et système pour conférer une odeur à un gaz
CN108138062A (zh) * 2015-10-26 2018-06-08 国际壳牌研究有限公司 添味甲烷流体和用于制造添味甲烷流体的方法以及其用途
EP4197626A1 (fr) 2021-12-16 2023-06-21 Messer Cutting Systems GmbH Insert d'odorisation pour l'extension d'une installation d'alimentation en gaz, installation d'alimentation en gaz équipée de l'insert d'odorisation et procédé d'odorisation d'un gaz de travail

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2259314A1 (de) * 1972-03-27 1973-10-11 Pennwalt Corp Odorisierungsmittel fuer fluessiggas
DE2337782B2 (de) * 1973-07-23 1977-04-07 San Diego Gas & Electric Co., (n.d. Ges.d.Staates Californien), San Diego; Dual Fuel Systems, Inc., (n.d.Ges.d.Staates Californien), Los Angeles; Calif. (V.St.A.) Verfahren zum odorieren von fluessigem erdgas mit geloestem mercaptan
DE2347906B2 (de) * 1972-10-02 1977-05-26 San Diego Gas & Electric Co., (n.d. Ges.d.Staates Californien), San Diego; Dual Fuel Systems, Inc., (n.d.Ges.d.Staates Californien), Los Angeles; Calif. (V.StA.) Verfahren zum odorieren von erdgas mit einer loesung eines thiophens in propan

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2259314A1 (de) * 1972-03-27 1973-10-11 Pennwalt Corp Odorisierungsmittel fuer fluessiggas
DE2347906B2 (de) * 1972-10-02 1977-05-26 San Diego Gas & Electric Co., (n.d. Ges.d.Staates Californien), San Diego; Dual Fuel Systems, Inc., (n.d.Ges.d.Staates Californien), Los Angeles; Calif. (V.StA.) Verfahren zum odorieren von erdgas mit einer loesung eines thiophens in propan
DE2337782B2 (de) * 1973-07-23 1977-04-07 San Diego Gas & Electric Co., (n.d. Ges.d.Staates Californien), San Diego; Dual Fuel Systems, Inc., (n.d.Ges.d.Staates Californien), Los Angeles; Calif. (V.St.A.) Verfahren zum odorieren von fluessigem erdgas mit geloestem mercaptan

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991017817A1 (fr) * 1990-05-22 1991-11-28 Aga Ab Adjonction d'une substance malodorante dans un gaz ou dans un melange de gaz liquide
US5632295A (en) * 1992-06-16 1997-05-27 Aga Aktiebolag Method and an apparatus for adding a melodorant to a consumer gas
FR2712599A1 (fr) * 1993-11-19 1995-05-24 Air Liquide Composition comprenant un gaz inerte.
WO1995033020A1 (fr) * 1994-05-27 1995-12-07 Erik Smårs Konsult Aktiebolag Apport de substances odorantes a des gaz de consommation dans des conduits d'alimentation
DE19748212A1 (de) * 1997-10-31 1999-05-06 Messer Griesheim Gmbh Odorierung von Schutzgasen
DE19748212B4 (de) * 1997-10-31 2006-10-12 Air Liquide Deutschland Gmbh Odorierung von Schutzgasen
WO2008004089A2 (fr) * 2006-07-04 2008-01-10 Angelo Mapelli Procédé et système pour conférer une odeur à un gaz
WO2008004089A3 (fr) * 2006-07-04 2008-02-28 Angelo Mapelli Procédé et système pour conférer une odeur à un gaz
CN108138062A (zh) * 2015-10-26 2018-06-08 国际壳牌研究有限公司 添味甲烷流体和用于制造添味甲烷流体的方法以及其用途
EP4197626A1 (fr) 2021-12-16 2023-06-21 Messer Cutting Systems GmbH Insert d'odorisation pour l'extension d'une installation d'alimentation en gaz, installation d'alimentation en gaz équipée de l'insert d'odorisation et procédé d'odorisation d'un gaz de travail
DE102021133472A1 (de) 2021-12-16 2023-06-22 Messer Cutting Systems Gmbh Odorierungs-Einsatz zur Erweiterung einer Gasversorgungsanlage, mit dem Odorierungs-Einsatz ausgestattete Gasversorgungsanlage sowie Verfahren zur Odorierung eines Arbeitsgases

Also Published As

Publication number Publication date
CA2009716A1 (fr) 1991-08-09
AU4656189A (en) 1990-06-26
FI93270C (fi) 1995-03-10
FI93270B (fi) 1994-11-30
FI885571A (fi) 1990-05-31
FI885571A0 (fi) 1988-11-30

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