EP0533670A1 - Hinzufügen einer übelriechenden substanz in ein gas und eine flüssiggasmischung. - Google Patents

Hinzufügen einer übelriechenden substanz in ein gas und eine flüssiggasmischung.

Info

Publication number
EP0533670A1
EP0533670A1 EP90910956A EP90910956A EP0533670A1 EP 0533670 A1 EP0533670 A1 EP 0533670A1 EP 90910956 A EP90910956 A EP 90910956A EP 90910956 A EP90910956 A EP 90910956A EP 0533670 A1 EP0533670 A1 EP 0533670A1
Authority
EP
European Patent Office
Prior art keywords
gas
consumer
malodorant
mercaptan
mixture
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.)
Granted
Application number
EP90910956A
Other languages
English (en)
French (fr)
Other versions
EP0533670B1 (de
Inventor
Erik Smars
Timo Suominen
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.)
AGA AB
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20378412&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0533670(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by AGA AB filed Critical AGA AB
Priority to AT90910956T priority Critical patent/ATE122264T1/de
Publication of EP0533670A1 publication Critical patent/EP0533670A1/de
Application granted granted Critical
Publication of EP0533670B1 publication Critical patent/EP0533670B1/de
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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/10—Mixing gases with gases
    • B01F23/12—Mixing gases with gases with vaporisation of a liquid

Definitions

  • the present invention relates to a method of adding a malodorant to a consumer gas which is distributed to a consumer station, so that persons present in the surroundings of the distribution system will be warned that the surroun ⁇ ding atmosphere contains more than the lowest permitted concentration of gas, therewith constituting the risk of explosion, suffocation, toxicity or some other risk.
  • gases which can be odorized in this way is oxygen, which can cause extremely comprehensive fire and explosion damage if it leaks into the surroundings ambient of the distribution system and/or the consumer station and therewith enriches the ambient air or atmosphere.
  • Another example includes combustible gases, such as natural gas, propane gas, town gas, etc., which when admixed with atmospheric oxygen can give rise to fires and explosions.
  • Another example includes odorless, toxic gases or more or less inert gases. If these latter gases escape into the ambient surrounds, they are able to displace the oxygen in the air, thereby creating suffocation conditions.
  • the Finnish Patent Application No. 870146 describes an improved method of adding a malodorant to oxygen gas so that if the air becomes enriched with oxygen, individuals in the near vicinity are warned that there is an imminent risk of explosion.
  • This improved method eliminates the need of han ⁇ dling toxic malodorants by the consumer, thereby avoiding the risk of explosion created by the addition of such malodor ⁇ ants.
  • a gaseous mixture of malodorant and a carrier gas in this case oxygen, a so-called master gas, by adding to the oxygen gas a malodorant in a concentration of 1,000- 10,000 ppm.
  • the master gas is admixed with oxygen gas distributed to the consumer in an amount such that the malodorant has a concentration of 5-50 ppm in the consumer gas.
  • the master gas contains solely oxygen and malodorant, for example dimethyl sulphide, DMS
  • DMS dimethyl sulphide
  • this application teaches a method of producing a master gas consisting of 0 oxygen and a malodorant, in this case dimethyl sulphide.
  • the master gas container is first filled with a mixture of dimethyl sulphide and nitrogen or helium gas.
  • the dimethyl sulphide is present in a concentration of 0.5-2.5 mole per cent.
  • Oxygen gas is then 5 introduced until a desired working pressure, e.g. 200 bars, is obtained in the container.
  • the object of the present invention is to provide a 0 method for producing master gas for admixture with a consumer gas, preferably natural gas and other combustible gases, such as town gas and propane gas, and oxygen, and which avoids the aforesaid drawbacks.
  • a consumer gas preferably natural gas and other combustible gases, such as town gas and propane gas, and oxygen
  • the method is characterized by dissolving a malodorant 5 in the form of an organic sulphur compound or a mixture of two or more organic sulphur compounds, said compounds comprising tetrahydrothiophene, methyl mercaptan, ethyl mercaptan, propyl mercaptan, butyl mercaptan, dimethyl sulphide, diethyl sulphide and methylethyl sulphide, in condensed carbon dioxide, sulphur hexafluoride or dinitrogen oxide in a pressure vessel, thereby obtaining in the pressure vessel a liquid phase, consisting of a solution of the malodorant in the condensed gas, and a gas phase; and by removing the liquid phase from the vessel, vaporizing said liquid phase and adding the vapor phase to the consumer gas distributed to the consumer.
  • a malodorant 5 in the form of an organic sulphur compound or a mixture of two or more organic sulphur compounds, said
  • the malodorant has a concentration of 0.5-10 mole per cent in the master gas. It is also preferred to add the master gas to the consumer gas in a quantity such that the malodorant concentration in said consumer gas is 1-20 ppm.
  • the invention also relates to a gaseous mixture con ⁇ sisting of liquid carbon dioxide, sulphur hexafluoride or dinitrogen oxide containing a dissolved malodorant of the aforesaid kind.
  • the malodorant which is an ill-smelling organic com- pound or a mixture of two or more such compounds, is intro ⁇ pokerd into the carrier gas, i.e. the condensed gas, as nitrous gas (laughing gas) , sulphur hexafluoride or prefera ⁇ bly carbon dioxide, in an amount of 0.5-10 mole per cent, calculated on the total quantity of gas.
  • the carrier gas i.e. the condensed gas, as nitrous gas (laughing gas) , sulphur hexafluoride or prefera ⁇ bly carbon dioxide
  • the aforesaid ill- smelling substances are soluble in the condensed gases in quantities suf ⁇ ficient to enable the method to be applied in practice.
  • the pressure in the resultant gas phase will vary when the gas mixture is stored at differing temperatures.
  • the malodorant content of the condensed gas is only affected to a negligible extent at temperatures within the range of -40°C to +50°C.
  • Admixture of the master gas i.e.
  • the carrier gas diluted with the malodorant, with the consumer gas is effected by first removing the liquid mixture of carrier gas and malodorant from the pressure vessel in which the mixture is stored, and vaporizing the liquid phase and then introduc- ing the gaseous mixture into the consumer gas in quantities such that the concentration of malodorant in the consumer gas will lie within the range of 1-50 ppm (1.0001-0.0050 mole per cent) , preferably within the range of 1-20 ppm.
  • the master gas i.e.
  • the gas mixture consisting of malodorant and carrier gas is to be admixed with a consumer gas which is distributed to various consumer stations through a pipe network or a through a central gas system, a gas mixer of more or less conventional kind is connected to the system upstream of the inlet to the pipe network.
  • the consumer gas and the master gas are mixed in desired proportions in this mixer.
  • the gas mixer includes a control system by means of which the ratio between the flow of master gas and the flow of consumer gas can be constantly maintained at a constant level. For example, if the master gas contains 2 mole per -cent malodorant and the consumer gas shall contain 4 ppm malodorant, the aforesaid ratio shall be 1:5000.
  • the vaporized mixture When the consumer gas is distributed to the consumer in a high pressure container, the vaporized mixture, the master gas, is first introduced into the container in a quantity such that the desired proportion of malodorant is obtained when subsequently introducing the consumer gas into the container to the desired container pressure.
  • the consumer gas containing the malodorant added thereto in accordance with the invention will therefore contain a given amount of carrier gas in addition to the malodorant.
  • the carrier-gas content of the master gas is, for instance, 95 mole per cent, i.e. the master gas contains 5 mole per cent malodorant, an admixture has been effected with one part of master gas to 5000 parts of consumer gas, the malodorant content will be 10 ppm and the carrier gas content, e.g. carbon dioxide, will be 0.02 mole per cent.
  • This proportion of non-combustible carrier gas is insig ⁇ nificant with regard to combustible gases.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treating Waste Gases (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Detergent Compositions (AREA)
  • Gas Separation By Absorption (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
EP90910956A 1990-05-22 1990-05-22 Odorierung von sauerstoffgas mit einer übelriechenden substanz und dafür geeignete flüssige mischung Expired - Lifetime EP0533670B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90910956T ATE122264T1 (de) 1990-05-22 1990-05-22 Odorierung von sauerstoffgas mit einer übelriechenden substanz und dafür geeignete flüssige mischung.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE1990/000340 WO1991017817A1 (en) 1990-05-22 1990-05-22 Adding a malodorant to a gas and liquid gas mixture

Publications (2)

Publication Number Publication Date
EP0533670A1 true EP0533670A1 (de) 1993-03-31
EP0533670B1 EP0533670B1 (de) 1995-05-10

Family

ID=20378412

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90910956A Expired - Lifetime EP0533670B1 (de) 1990-05-22 1990-05-22 Odorierung von sauerstoffgas mit einer übelriechenden substanz und dafür geeignete flüssige mischung

Country Status (12)

Country Link
EP (1) EP0533670B1 (de)
JP (1) JPH05507022A (de)
AU (1) AU650849B2 (de)
BR (1) BR9008026A (de)
DE (1) DE69019378T2 (de)
DK (1) DK0533670T3 (de)
ES (1) ES2072441T3 (de)
LT (1) LT3095B (de)
LV (1) LV10212B (de)
NO (1) NO177456C (de)
RU (1) RU2041920C1 (de)
WO (1) WO1991017817A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5632295A (en) * 1992-06-16 1997-05-27 Aga Aktiebolag Method and an apparatus for adding a melodorant to a consumer gas

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9401827L (sv) * 1994-05-27 1995-05-22 Erik Smaars Konsult Ab Sätt och anordning för att tillsätta luktämne till en i en gasledning strömmande förbrukningsgas
DE19745851B4 (de) * 1997-10-16 2006-03-23 Air Liquide Deutschland Gmbh Odorierung von Acethylen
EA036280B1 (ru) * 2015-08-10 2020-10-21 Общество С Ограниченной Ответственностью "Термоэлектрика" Автономный извещатель предпожарных ситуаций
RU2622947C2 (ru) * 2015-08-10 2017-06-21 Общество с ограниченной ответственностью "Инновационные химические технологии" Полимерный композиционный материал, используемый для формирования сигнала о локальных перегревах электрооборудования
RU2596954C1 (ru) * 2015-08-10 2016-09-10 Общество с ограниченной ответственностью "Инновационные химические технологии" Способ обнаружения предпожарных ситуаций, возникающих из-за неисправностей в электрической цепи

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1185330B (de) * 1963-01-05 1965-01-14 Koppers Gmbh Heinrich Verfahren zur Odorierung von Gasen
NL174659C (nl) * 1972-03-27 1984-07-16 Pennwalt Corp Werkwijze voor het odoriseren van vloeibaar gemaakt, brandbaar koolwaterstofgas.
CA1006353A (en) * 1972-10-02 1977-03-08 David K. Mulliner Method and system for odorizing liquid natural gas with thiophene
FI870146A0 (fi) 1987-01-15 1987-01-15 Tauno Kalervo Koponen Kassett som transformerar straolvaermen.
FI78172C (fi) * 1987-03-10 1989-06-12 Aga Ab Saett att tillsaetta luktaemne till oxygengas.
FI78173C (fi) * 1987-05-22 1989-06-12 Aga Ab Saett att framstaella sk. mastergas.
FI93270C (fi) * 1988-11-30 1995-03-10 Aga Ab Menetelmä hajusteen lisäämiseksi happikaasuun

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9117817A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5632295A (en) * 1992-06-16 1997-05-27 Aga Aktiebolag Method and an apparatus for adding a melodorant to a consumer gas

Also Published As

Publication number Publication date
NO177456B (no) 1995-06-12
LTIP183A (en) 1994-06-15
EP0533670B1 (de) 1995-05-10
AU6030590A (en) 1991-12-10
LT3095B (en) 1994-11-25
JPH05507022A (ja) 1993-10-14
LV10212B (en) 1995-08-20
DK0533670T3 (da) 1995-10-02
DE69019378D1 (de) 1995-06-14
WO1991017817A1 (en) 1991-11-28
AU650849B2 (en) 1994-07-07
ES2072441T3 (es) 1995-07-16
DE69019378T2 (de) 1995-09-14
NO924460D0 (no) 1992-11-19
RU2041920C1 (ru) 1995-08-20
LV10212A (lv) 1994-10-20
NO177456C (no) 2000-02-21
BR9008026A (pt) 1993-04-06
NO924460L (no) 1992-11-19

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