CN1397360A - Fire extinguishing agent - Google Patents
Fire extinguishing agent Download PDFInfo
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- CN1397360A CN1397360A CN 01114367 CN01114367A CN1397360A CN 1397360 A CN1397360 A CN 1397360A CN 01114367 CN01114367 CN 01114367 CN 01114367 A CN01114367 A CN 01114367A CN 1397360 A CN1397360 A CN 1397360A
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- fighting medium
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Fireproofing Substances (AREA)
- Fire-Extinguishing Compositions (AREA)
Abstract
A fire-extinguishing chemical contains bichlorotrifluoethane and lemon oil as shielding flavouring in weight ratio of (95-99):(1-5). Its advantages are high fire-extinguishing efficiency, low poison and environmental protection.
Description
Technical field
The invention belongs to the halogenated alkane technical field, particularly a kind of is the fire-fighting medium of effective constituent with the dichlorotrifluoroethane.
Background technology
Traditional Theory of Combustion (trilateral Theory of Combustion) thinks that combustion processes is the interaction process of fuel, oxygen and heat energy three elements.Want knock down the flame, must remove in the three elements, promptly remove fuel, starvation or cooling.Nearest research thinks that except above-mentioned three fundamentals, combustion processes is followed the four elements-free radical, and this is tetrahedron Theory of Combustion or free radical Theory of Combustion.This theory is thought, the effective carrier of combustion processes is hydrogen, hydroxy and oxygen, and wherein hydrogen and hydroxy exist with radical form, and they are present in the free radical lock reaction of combustion processes, because this speed of response is exceedingly fast, thereby is controlling the flame rate of growth.Certainly in combustion processes, also have other free radical and take place, just other free radicals do not have hydroperoxyl radical and hydroxyl free radical active.
The extinguishing mechanism of halocarbon fire-fighting medium is mainly finished by eliminating the active combustion carrier, has promptly blocked the transfer reaction in the flame.Halogen atom cracking from the carbon atom is come out in the reaction, forms free radical, fully freely participates in free chain reaction, eliminates the effective carrier hydrogen and the hydroxyl free radical of combustion processes effectively, reaches the effect of fire extinguishing.
Since the seventies in 20th century, breathed out imperial serial fire-fighting medium (Ha Long-1211, a chlorine one dibromodifluoro methane; Ha Long-1301, bromotrifluoromethane; Ha Long-2402, dibromotetrafluoroethane etc.) owing to have characteristics such as easy to use, that fire-fighting efficiency is high, leave no trace after the fire extinguishing, be used widely.Yet the hazardness of halon fire agent also comes out gradually, and it is very strong to the destructiveness of ozonosphere, and the destruction of ozonosphere will be endangered our ecotope and human beings'health.According to " Montreal Agreement requires (amendment) ", China will stop the use of Ha Long-1211, superseded fully Ha Long-1301 in 2010 2005.The imperial substitute in development Kazakhstan is imperative.
Summary of the invention
The object of the invention is to provide a kind of efficient, environment-friendly type fire-fighting medium.
For reaching above-mentioned purpose, the present invention adopts following technical scheme: a kind of fire-fighting medium, its effective constituent are dichlorotrifluoroethane.
Also contain a small amount of covering seasonings.
The covering seasonings is a lemon oil, and the weight proportion of dichlorotrifluoroethane and lemon oil is 95-99: 5-1.
Fire-fighting medium of the present invention and halon fire agent performance are compared as follows table:
| Project | The present invention | Breathe out dragon 1211 | Breathe out dragon 1301 |
| Composition | CHCL 2CF 3+ seasonings | ??CF 2ClBr | ????CBrF 3 |
| Effective constituent amount | 152.91 | ??165.40 | ????148.90 |
| Vaporization heat Kj/kg.mol (btu/1b.mol) | 21℃169.34 (70℃73.36) | ??21℃58 ??(70℃25) | ????21℃12.30 ????(70℃5.30) |
| Normal boiling point | 27.60℃(81.68°F) | ??-4℃(-24.8°F) | ????-57.8℃(-72°F) |
| Vapor pressure MPa (psia) | 25℃0.094 (77℃13.67) | ??25℃0.31 ??(77℃45.07) | ????21℃1.47 ????(70℃21.37) |
| Critical temperature | 183.80℃(362.8F) | ??154℃(362.8F) | ????67℃(152.6F) |
| Emergent pressure | 3.74MPa(542psia) | ??4.21MPa(610psia) | ????3.97MPa(575psia) |
| Vapour density kg/m 3(1b./ft 3) | 25℃6.45 (77℃0.403) | ??25℃5.25 ??(70℃0.328) | ????21℃6.26 ????(70℃0.391) |
| Fluid density kg/m 3(1b./ft 3) | 25℃1448 (77℃90.41) | ??25℃1815 ??(70℃113.44) | ????21℃1567 ????(70℃97.8) |
| Ozone depleting potential (ODP) (CFC-11=1) | 0.016 | ??10 | ????16 |
| Global warming potential (GWP) (CFC-11=1) | 0.018 | ??1.4 | ????1.5 |
| Retention time in the atmosphere (year) (ALT) | 1.5 | ??65 | ????77 |
| Operating pressure | 25bar(360psia) | ??25bar(360psia) | ????25bar(360psia) |
| State | Liquid | Liquid | Gas |
As seen from table, (1) product normal temperature of the present invention is down liquid, promptly be liquid in flash arrestor and arrives fire with liquid form distinguish when fire extinguishing, directly cover parcel flame, both can cut off oxygen supply, reduce surrounding temperature, can participate in the fire extinguishing chain reaction by radical form again, thus effectively fire extinguishing.(2) compare with breathing out imperial serial fire-fighting medium, retention time shows product environmental-protecting performance excellence of the present invention far below breathing out imperial product in product ozone depleting potential of the present invention (ODP), global warming potential (GWP), the atmosphere.
Product of the present invention is compared as can be known with breathing out imperial product extinguishing property, and product inflammableness peak value of the present invention is high slightly, is 11.4.And Ha Long-1211 is 5.2, and Ha Long-1301 is 6.14, and (effective constituent is CHClFCF to Ha Long-124
3) be 13.6.The inflammableness peak value is meant that certain fire-fighting medium stops the required minimum concentration of some inflammable material burning in air, and obviously, the inflammableness peak value is low more, and extinguishing property is good more.For purposes of the invention, because it is a liquid, when fire extinguishing, arrive fire district, free of losses in the way with liquid form.And breathe out imperial product is gas, arrives the fire district with gas form during fire extinguishing, in the way loss very big, it is roughly the same to reach the same required fire-fighting dose of fire extinguishing effect.Therefore, extinguishing property of the present invention is basic identical with the imperial product in Kazakhstan.
Change experiment as can be known according to oxygen consumption under the different blowdown times, the oxygen consumption of product of the present invention changes and Ha Long-1301 basically identical, shows that the two extinguishing property is close.Combustion processes is an oxygen process, and oxygen consumption is more little, and extinguishing property is high more; Pressure changed experiment as can be known in time when product put out different combustion medium according to the present invention, and under different media, change curve changes little, shows that product of the present invention is close to different media fire extinguishing property.
According to the experimentation on animals to product of the present invention, sucking four hours LC50 is 32000ppm (mouse), and ALD is 9000mg/kg (mouse) in mouthful, and skin absorption is＞2000mg/kg that Ai Yinsi tests negative, karyomit(e) experiment feminine gender, small nut feminine gender.Therefore, product of the present invention is the low toxicity material.
In addition, be added with in the product of the present invention and hide seasonings such as lemon oil, can effectively alleviate the dichlorotrifluoroethane smell stimulates.Fire-fighting medium of the present invention is non-conductive, unlikely rust, and no residue is the first-selected fire-fighting medium of various electric, electronics fire.But, be unsuitable for D class fire, because the active metal of D class fire can react with halogen.
Product preparation process of the present invention is: the dichlorotrifluoroethane of formula ratio and lemon wet goods seasonings thorough mixing, filter.Its common using method is identical with halon fire agent, can directly be used in existing halon extinguisher or Firefighting System.
Embodiment
Embodiment 1, a kind of fire-fighting medium are mixed, are filtered and make by 1 part of lemon oil of 99 parts of dichlorotrifluoroethanes of weight part.
In embodiment 2, the present embodiment, 95 parts of dichlorotrifluoroethanes, 5 parts of lemon oil.Other is with embodiment 1.
In embodiment 3, the present embodiment, 97 parts of dichlorotrifluoroethanes, 3 parts of lemon oil.Other is with embodiment 1.
Claims (3)
1, a kind of fire-fighting medium, the present invention is characterised in that its effective constituent is dichlorotrifluoroethane.
2, fire-fighting medium as claimed in claim 1 is characterized in that, also contains a small amount of covering seasonings.
3, fire-fighting medium as claimed in claim 2 is characterized in that, the covering seasonings is a lemon oil, and the weight proportion of dichlorotrifluoroethane and lemon oil is 95-99: 5-1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01114367 CN1397360A (en) | 2001-07-18 | 2001-07-18 | Fire extinguishing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01114367 CN1397360A (en) | 2001-07-18 | 2001-07-18 | Fire extinguishing agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1397360A true CN1397360A (en) | 2003-02-19 |
Family
ID=4661016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01114367 Pending CN1397360A (en) | 2001-07-18 | 2001-07-18 | Fire extinguishing agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1397360A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1935297B (en) * | 2006-10-10 | 2010-05-12 | 只茂海 | Aromatic foam extinguishant |
| CN108421204A (en) * | 2017-02-15 | 2018-08-21 | 上海汇友精密化学品有限公司 | One kind containing 12 fluoro- 2- methyl-propione fire extinguishant compositions |
| CN108421202A (en) * | 2017-02-15 | 2018-08-21 | 上海汇友精密化学品有限公司 | A kind of fire extinguishant compositions |
| CN108421205A (en) * | 2017-02-15 | 2018-08-21 | 上海汇友精密化学品有限公司 | A kind of fire extinguishant compositions of the trifluoro propene containing bromo |
| CN108421203A (en) * | 2017-02-15 | 2018-08-21 | 上海汇友精密化学品有限公司 | A kind of fire extinguishant compositions of the pentafluoropropene containing bromo |
-
2001
- 2001-07-18 CN CN 01114367 patent/CN1397360A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1935297B (en) * | 2006-10-10 | 2010-05-12 | 只茂海 | Aromatic foam extinguishant |
| CN108421204A (en) * | 2017-02-15 | 2018-08-21 | 上海汇友精密化学品有限公司 | One kind containing 12 fluoro- 2- methyl-propione fire extinguishant compositions |
| CN108421202A (en) * | 2017-02-15 | 2018-08-21 | 上海汇友精密化学品有限公司 | A kind of fire extinguishant compositions |
| CN108421205A (en) * | 2017-02-15 | 2018-08-21 | 上海汇友精密化学品有限公司 | A kind of fire extinguishant compositions of the trifluoro propene containing bromo |
| CN108421203A (en) * | 2017-02-15 | 2018-08-21 | 上海汇友精密化学品有限公司 | A kind of fire extinguishant compositions of the pentafluoropropene containing bromo |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |