CA2442662A1 - Fire and explosion suppression - Google Patents
Fire and explosion suppression Download PDFInfo
- Publication number
- CA2442662A1 CA2442662A1 CA002442662A CA2442662A CA2442662A1 CA 2442662 A1 CA2442662 A1 CA 2442662A1 CA 002442662 A CA002442662 A CA 002442662A CA 2442662 A CA2442662 A CA 2442662A CA 2442662 A1 CA2442662 A1 CA 2442662A1
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- CA
- Canada
- Prior art keywords
- chemical substance
- range
- agent
- agent according
- inert gas
- 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.)
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Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
- A62D1/0092—Gaseous extinguishing substances, e.g. liquefied gases, carbon dioxide snow
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
- A62D1/0028—Liquid extinguishing substances
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
- A62D1/0028—Liquid extinguishing substances
- A62D1/0057—Polyhaloalkanes
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing Compositions (AREA)
- Fireproofing Substances (AREA)
- Nozzles (AREA)
- Insulated Conductors (AREA)
- Control Of Combustion (AREA)
Abstract
A fire or explosion suppression system comprises a source (30) of a liquid suppressant under pressure, and a source (32) of an inert gas under pressure.
The liquid suppressant is a chemical substance having a low environmental impact, with a short atmospheric lifetime of less than 30 days. The inert gas may be nitrogen, carbon dioxide, argon, neon or helium or mixtures of any two or more of them. The suppressant and the inert gas are fed under pressure to an output unit (34) comprising a mixing chamber in which the liquid and the gas impinge to produce a mist of the liquid suppressant of very small droplet size which is entrained in the pressurised gas together with vapour from the liquid, the so-entrained mist and vapour and the gas being discharged by a nozzle (44) into an area to be protected. The mist and vapour are therefore carried by the entraining and transporting high pressure gas into regions of the areas to be protected, enabling a total flooding capability. The inert gas also performs a fire or explosion suppressing capability.
The liquid suppressant is a chemical substance having a low environmental impact, with a short atmospheric lifetime of less than 30 days. The inert gas may be nitrogen, carbon dioxide, argon, neon or helium or mixtures of any two or more of them. The suppressant and the inert gas are fed under pressure to an output unit (34) comprising a mixing chamber in which the liquid and the gas impinge to produce a mist of the liquid suppressant of very small droplet size which is entrained in the pressurised gas together with vapour from the liquid, the so-entrained mist and vapour and the gas being discharged by a nozzle (44) into an area to be protected. The mist and vapour are therefore carried by the entraining and transporting high pressure gas into regions of the areas to be protected, enabling a total flooding capability. The inert gas also performs a fire or explosion suppressing capability.
Claims (31)
1. A fire or explosion suppression agent, having two suppressant parts, one comprising an explosion suppressing chemical substance which is substantially liquid at normal temperatures and pressures and the other comprising a fire or explosion suppressing inert gas; the chemical substance being dispersed as a suspension in the inert gas, the chemical substance when so disposed having low environmental impact, with a short atmospheric lifetime of less than 30 days; the chemical substance comprising one or more chemicals with the structure Z-R-X-Y, where the monovalent radical Z is a halogen atom taken from the group fluorine (-F) or bromine (-Br); where the divalent radical R is a perfluoro-or polyfluoro-alkylidene group of formula - C n H p F2n-p with n in the range 1- 6 and p in the range 0-4; where the divalent radical X is selected from the group ether (-O-) trifluoromethylimino (-N(CF3)-), carbonyl (-CO-), or ethenyl (-CW=CH-) with W
being either H or Br; and where the monovalent radical Y is selected from the group hydrogen (-H-), bromine (-Br-), alkyl of formula -C m H2m+1 with m in the range 1 - 4, or perfluoroalkyl of formula -C m F2m+1 with m in the range 1 - 4, or polyfluoroalkyl of formula -C m H k F2m+1-k with m in the range 1-4 and k in the range 1-2m; the agent including nothing else having any significant environmental impact and which has an atmospheric lifetime longer than 30 days.
being either H or Br; and where the monovalent radical Y is selected from the group hydrogen (-H-), bromine (-Br-), alkyl of formula -C m H2m+1 with m in the range 1 - 4, or perfluoroalkyl of formula -C m F2m+1 with m in the range 1 - 4, or polyfluoroalkyl of formula -C m H k F2m+1-k with m in the range 1-4 and k in the range 1-2m; the agent including nothing else having any significant environmental impact and which has an atmospheric lifetime longer than 30 days.
2. A method of suppressing a fire or explosion, in which a fire or explosion suppressing chemical substance which is in liquid form or substantially so at normal temperatures and pressures is dispersed as a suspension in a fire or explosion suppressing inert gas and discharged with the gas into an area to be protected; the chemical substance being dispersed as a suspension in the inert gas, the chemical substance when so disposed having low environmental impact, with a short atmospheric lifetime of less than 30 days;
the chemical substance comprising one or more chemicals with the structure Z-R-X-Y, where the monovalent radical Z is a halogen atom taken from the group fluorine (-F) or bromine (-Br); where the divalent radical R is a perfluoro- or polyfluoro-alkylidene group of formula - C n H p F2n-p with n in the range 1 - 6 and p in the range 0-4;
where the divalent radical X is selected from the group ether (-O-) trifluoromethylimino (-N(CF3)-), carbonyl (-CO-), or ethenyl (-CW=CH-) with W being either H or Br; and where the monovalent radical Y is selected from the group hydrogen (-H-), bromine (-Br-), alkyl of formula -C m H2m+1 with m in the range 1- 4, or perfluoroalkyl of formula -C m F2m+1 with m in the range 1- 4, or polyfluoroalkyl of formula -C m H k F2m+1-k with m in the range 1-4 and k in the range 1-2m; the agent including nothing else having any significant environmental impact, and which has an atmospheric lifetime longer than 30 days.
the chemical substance comprising one or more chemicals with the structure Z-R-X-Y, where the monovalent radical Z is a halogen atom taken from the group fluorine (-F) or bromine (-Br); where the divalent radical R is a perfluoro- or polyfluoro-alkylidene group of formula - C n H p F2n-p with n in the range 1 - 6 and p in the range 0-4;
where the divalent radical X is selected from the group ether (-O-) trifluoromethylimino (-N(CF3)-), carbonyl (-CO-), or ethenyl (-CW=CH-) with W being either H or Br; and where the monovalent radical Y is selected from the group hydrogen (-H-), bromine (-Br-), alkyl of formula -C m H2m+1 with m in the range 1- 4, or perfluoroalkyl of formula -C m F2m+1 with m in the range 1- 4, or polyfluoroalkyl of formula -C m H k F2m+1-k with m in the range 1-4 and k in the range 1-2m; the agent including nothing else having any significant environmental impact, and which has an atmospheric lifetime longer than 30 days.
3. A fire or explosion suppressant system, comprising a source (30;5) of a fire or explosion suppressing chemical substance which is in liquid form or substantially so at normal temperatures and pressures, and a source (32;14) of a pressurised fire or explosion suppressing inert gas, means (34;6) for dispersing the chemical substance as a suspension in the pressurised gas, and discharge means (44;26,29) for discharging the so-dispersed chemical substance and the pressurised gas into an area to be protected; the chemical substance being dispersed as a suspension in the inert gas, the chemical substance when so disposed having low environmental impact, with a short atmospheric lifetime of less than 30 days; the chemical substance comprising one or more chemicals with the structure Z-R-X-Y, where the monovalent radical Z is a halogen atom taken from the group fluorine (-F) or bromine (-Br); where the divalent radical R is a perfluoro-or polyfluoro-alkylidene group of formula - C n H p F2n-P with n in the range 1- 6 and p in the range 0-4;
where the divalent radical X is selected from the group ether (-O-) trifluoromethylimino (-N(CF3)-), carbonyl (-CO-), or ethenyl (-CW=CH-) with W being either H or Br;
and where the monovalent radical Y is selected from the group hydrogen (-H-), bromine (-Br-), alkyl of formula -C m H2m+1 with m in the range 1 - 4, or perfluoroalkyl of formula -C m F2m+1 with m in the range 1- 4, or polyfluoroalkyl of formula -C m H k F2m+1-k with m in the range 1-4 and k in the range 1-2m; the agent including nothing else having any significant environmental impact and which has an atmospheric lifetime longer than 30 days.
where the divalent radical X is selected from the group ether (-O-) trifluoromethylimino (-N(CF3)-), carbonyl (-CO-), or ethenyl (-CW=CH-) with W being either H or Br;
and where the monovalent radical Y is selected from the group hydrogen (-H-), bromine (-Br-), alkyl of formula -C m H2m+1 with m in the range 1 - 4, or perfluoroalkyl of formula -C m F2m+1 with m in the range 1- 4, or polyfluoroalkyl of formula -C m H k F2m+1-k with m in the range 1-4 and k in the range 1-2m; the agent including nothing else having any significant environmental impact and which has an atmospheric lifetime longer than 30 days.
4. An agent according to claim 1, a method according to claim 2 or a system according to claim 3, in which the radicals R and Y are linked (by a C-C bond) such as to form a 4-,
5- or 6- membered ring.
5. An agent according to claim 1 or 4, a method according to claim 2 or 4 or a system according to claim 3 or 4, in which the dispersing means (6) comprises means for producing a mist of the chemical substance and entraining the mist in the inert gas.
5. An agent according to claim 1 or 4, a method according to claim 2 or 4 or a system according to claim 3 or 4, in which the dispersing means (6) comprises means for producing a mist of the chemical substance and entraining the mist in the inert gas.
6. An agent according to claim 1, 4 or 5, a method according to claim 2,4 or 5 or a system according to claim 3,4 or 5, in which the chemical substance is dispersed as a vapour in the inert gas.
7. An agent according to any one of claims 1,4,5 and 6, a method according to any one of claims 2,4,5 and 6 or a system according to any one of claims 3 to 6, in which the groups Z,X and Y are so selected that the total number of bromine atoms in the molecule does not exceed one.
8. An agent according to any one of claims 1 and 4 to 7, a method according to any one of claims 2 and 4 to 7, or a system according to any one of claims 3 to 7, in which the groups R and Y are selected such that n + m lies in the range 1 - 6, and n - m is at least 1.
9. An agent according to any one of claims 1 and 4 to 8, a method according to any one of claims 2 and 4 to 8, or a system according to any one of claims 3 to 8, in which the groups R,X and Y are chosen so that the total number of carbon atoms in the molecule is in the range 3 - 8.
10. An agent according to claim 9, a method according to claim 9, or a system according to claim 9, in which the total number of the said carbon atoms is in the range 3 - 6.
11. An agent according to any one of claims 1 and 4 to 10, a method according to any one of claims 2 and 4 to 10, or a system according to any one of claims 3 to 10, in which the molecular weight of the molecule lies in the range 150 - 400.
12. An agent according to claim 11, a method according to claim 11, or a system according to claim 11, in which the said molecular weight lies in the range 150 - 350.
13. An agent according to any one of claims 1 and 4 to 12, a method according to any one of claims 2 and 4 to 12, or a system according to any one of claims 3 to 12, in which the groups R,X and Y are chosen so that the weight% of halogen (fluorine and bromine) in the molecule lies in the range 70 - 90%.
14. An agent according to claim 13, a method according to claim 13, or a system according to claim 13, which the weight% of halogen (fluorine and bromine) in the molecule lies in the range 70-80%.
15. An agent according to any one of claims 1 and 4 to 14, a method according to any one of claims 2 and 4 to 14, or a system according to any one of claims 3 to 14, in which the chemical substance comprises 2-bromo-1,1,2-trifluoro-1-methoxyethane.
16. An agent according to any one of claims 1 and 4 to 14, a method according to any one of claims 2 and 4 to 14, or a system according to any one of claims 3 to 14, in which the chemical substance is 2-bromo-1,1,2,2-tetrafluoro-1-methoxyethane.
17.An agent according to any one of claims 1 and 4 to 14, a method according to any one of claims 2 and 4 to 14, or a system according to any one of claims 3 to 14, in which the chemical substance is 2-bromo-1',1',1',2,2-pentafluoro-1-methoxyethane.
18. An agent according to any one of claims 1 and 4 to 14, a method according to any one of claims 2 and 4 to 14, or a system according to any one of claims 3 to 14, in which the chemical substance is 2-bromo-2,3,3-trifluoro-1-oxacyclopentane.
19. An agent according to any one of claims 1 and 4 to 14, a method according to any one of claims 2 and 4 to 14, or a system according to any one of claims 3 to 14, in which the chemical substance is 2-(N,N-bis(trifluoromethyl)amino)-1,1-difluoro-1-bromoethane.
20. An agent according to any one of claims 1 and 4 to 14, a method according to any one of claims 2 and 4 to 14, or a system according to any one of claims 3 to 14, in which the chemical substance is 2-(N,N-bis(trifluoromethyl)amino)-1,1,2-trifluoro-1-bromoethane.
21. An agent according to any one of claims 1 and 4 to 14, a method according to any one of claims 2 and 4 to 14, or a system according to any one of claims 3 to 14, in which the chemical substance is 2-(N,N-bis(trifluoromethyl)amino)-1,2-difluoro-1-bromoethane.
22. An agent according to any one of claims 1 and 4 to 14, a method according to any one of claims 2 and 4 to 14, or a system according to any one of claims 3 to 14, in which the chemical substance is 2-(N,N-bis(trifluoromethyl)amino)-1-bromoethane.
23 23. An agent according to any one of claims 1 and 4 to 14, a method according to any one of claims 2 and 4 to 14, or a system according to any one of claims 3 to 14, in which the chemical substance is 2-bromo-3,3,3-trifluoro-1-propene.
24. An agent according to any one of claims 1 and 4 to 14, a method according to any one of claims 2 and 4 to 14, or a system according to any one of claims 3 to 14, in which the chemical substance is 4-bromo-3,3,4,4-tetrafluoro-1-butene.
25. An agent according to any one of claims 1 and 4 to 14, a method according to any one of claims 2 and 4 to 14, or a system according to any one of claims 3 to 14, in which the chemical substance is 2-bromo-3,3,4,4,4-pentafluoro-1-butene.
26. An agent according to any one of claims 1 and 4 to 14, a method according to any one of claims 2 and 4 to 14, or a system according to any one of claims 3 to 14, in which the chemical substance is 1-bromo-3,3,4,4,4-pentafluoro-1-butene.
27. An agent according to any one of claims 1 and 4 to 14, a method according to any one of claims 2 and 4 to 14, or a system according to any one of claims 3 to 14, in which the chemical substance is 1-bromo-3,3,3,-trifluoro-1-propene.
28. An agent according to any one of claims 1 and 4 to 14, a method according to any one of claims 2 and 4 to 14, or a system according to any one of claims 3 to 14, in which the chemical substance is 2-bromo-3,3,4,4,5,5,5-heptafluoro-1-pentene.
29. An agent according to any one of claims 1 and 4 to 14, a method according to any one of claims 2 and 4 to 14, or a system according to any one of claims 3 to 14, in which the chemical substance is 2-bromo-3,4,4,4,4',4',4'-heptafluoro-3-methyl-1-butene.
30. An agent according to any one of claims 1 and 4 to 14, a method according to any one of claims 2 and 4 to 14, or a system according to any one of claims 3 to 14, in which the chemical substance is dodecafluoro-2-methylpentan-3-one.
31. An agent according to any one of claims 1 and 4 to 30, a method according to any one of claims 2 and 4 to 30, or a system according to any one of claims 3 to 30, in which the inert gas comprises one or more of argon, helium, neon, nitrogen and carbon dioxide.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0107886.4 | 2001-03-29 | ||
| GB0107886A GB2370767A (en) | 2001-01-09 | 2001-03-29 | Fire / explosion suppression agent mixing and discharge system, liquid mist in inert gas suppressant and method of discharge |
| GB0118374.8 | 2001-07-27 | ||
| GB0118374A GB2370768A (en) | 2001-01-09 | 2001-07-27 | Fire and explosion suppression |
| PCT/GB2002/001476 WO2002078790A2 (en) | 2001-03-29 | 2002-03-28 | Fire and explosion suppression agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2442662A1 true CA2442662A1 (en) | 2002-10-10 |
| CA2442662C CA2442662C (en) | 2010-03-23 |
Family
ID=26245910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2442662A Expired - Lifetime CA2442662C (en) | 2001-03-29 | 2002-03-28 | Fire and explosion suppression |
Country Status (7)
| Country | Link |
|---|---|
| US (2) | US7153446B2 (en) |
| EP (1) | EP1372793B1 (en) |
| AT (1) | ATE345850T1 (en) |
| CA (1) | CA2442662C (en) |
| DE (1) | DE60216244T2 (en) |
| GB (1) | GB2375046B (en) |
| WO (1) | WO2002078790A2 (en) |
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| US20040163825A1 (en) * | 2001-03-29 | 2004-08-26 | Dunster Robert George | Fire and explosion suppression |
| GB2386835B (en) | 2002-03-28 | 2005-04-27 | Kidde Plc | Fire and explosion suppression |
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| US20080047719A1 (en) * | 2006-08-16 | 2008-02-28 | Oskar Levander | Fire extinguishing system |
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| CN101918083B (en) * | 2007-09-24 | 2012-08-08 | Utc消防及保安公司 | Hybrid inert gas fire suppression system |
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| US8915307B2 (en) | 2008-12-18 | 2014-12-23 | Utc Fire & Security Corporation | Atomizing nozzle for a fire suppression system |
| US8077317B2 (en) * | 2009-04-09 | 2011-12-13 | Kidde Technologies, Inc. | Sensor head for a dry powder agent |
| US8004684B2 (en) * | 2009-04-09 | 2011-08-23 | Kidde Technologies, Inc. | Sensor head for a dry powder agent |
| US8161790B2 (en) * | 2009-04-09 | 2012-04-24 | Kidde Technologies, Inc. | Measurement system for powder based agents |
| JP5276630B2 (en) * | 2009-10-23 | 2013-08-28 | エア・ウォーター防災株式会社 | Gas fire extinguishing equipment |
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| US8858820B2 (en) | 2011-10-07 | 2014-10-14 | American Pacific Corporation | Bromofluorocarbon compositions |
| US9713732B2 (en) * | 2012-03-16 | 2017-07-25 | Meggitt Safety Systems, Inc. | Fire suppressing materials and systems and methods of use |
| US8920668B2 (en) * | 2012-03-16 | 2014-12-30 | Meggitt Safety Systems Inc. | Fire suppressing materials and systems and methods of use |
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| BR112017015358A2 (en) * | 2015-01-22 | 2018-01-16 | Zodiac Aerotechnics | fuel cell fire prevention devices on board an aircraft |
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2002
- 2002-03-28 DE DE60216244T patent/DE60216244T2/en not_active Expired - Lifetime
- 2002-03-28 CA CA2442662A patent/CA2442662C/en not_active Expired - Lifetime
- 2002-03-28 AT AT02708510T patent/ATE345850T1/en not_active IP Right Cessation
- 2002-03-28 WO PCT/GB2002/001476 patent/WO2002078790A2/en active IP Right Grant
- 2002-03-28 EP EP02708510A patent/EP1372793B1/en not_active Expired - Lifetime
- 2002-03-28 US US10/473,549 patent/US7153446B2/en not_active Expired - Lifetime
- 2002-03-28 GB GB0207465A patent/GB2375046B/en not_active Expired - Fee Related
-
2006
- 2006-11-06 US US11/593,850 patent/US20070131891A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| EP1372793B1 (en) | 2006-11-22 |
| US20040144949A1 (en) | 2004-07-29 |
| WO2002078790A2 (en) | 2002-10-10 |
| CA2442662C (en) | 2010-03-23 |
| GB2375046A (en) | 2002-11-06 |
| EP1372793A2 (en) | 2004-01-02 |
| US20070131891A1 (en) | 2007-06-14 |
| ATE345850T1 (en) | 2006-12-15 |
| DE60216244T2 (en) | 2007-05-10 |
| GB2375046B (en) | 2004-11-10 |
| GB0207465D0 (en) | 2002-05-08 |
| DE60216244D1 (en) | 2007-01-04 |
| US7153446B2 (en) | 2006-12-26 |
| WO2002078790A3 (en) | 2003-03-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20220328 |