CN101332347B - Fire extinguishing agent for sodium fire - Google Patents
Fire extinguishing agent for sodium fire Download PDFInfo
- Publication number
- CN101332347B CN101332347B CN2008101352322A CN200810135232A CN101332347B CN 101332347 B CN101332347 B CN 101332347B CN 2008101352322 A CN2008101352322 A CN 2008101352322A CN 200810135232 A CN200810135232 A CN 200810135232A CN 101332347 B CN101332347 B CN 101332347B
- Authority
- CN
- China
- Prior art keywords
- fire
- sodium
- extinguishing agent
- extinguishing chemical
- equal
- 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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Links
- 229910052708 sodium Inorganic materials 0.000 title claims abstract description 42
- 239000011734 sodium Substances 0.000 title claims abstract description 42
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 title claims abstract description 40
- 239000003795 chemical substances by application Substances 0.000 title abstract 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 10
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 5
- 239000002245 particle Substances 0.000 claims abstract description 5
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 5
- 239000011593 sulfur Substances 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims description 25
- 239000007789 gas Substances 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract 1
- 239000000460 chlorine Substances 0.000 abstract 1
- 229910052801 chlorine Inorganic materials 0.000 abstract 1
- 229910052783 alkali metal Inorganic materials 0.000 description 6
- 150000001340 alkali metals Chemical class 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- 239000007921 spray Substances 0.000 description 4
- 239000000470 constituent Substances 0.000 description 3
- 230000000505 pernicious effect Effects 0.000 description 3
- 206010002660 Anoxia Diseases 0.000 description 2
- 241000976983 Anoxia Species 0.000 description 2
- 206010003497 Asphyxia Diseases 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 239000000443 aerosol Substances 0.000 description 2
- 230000007953 anoxia Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910001338 liquidmetal Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 150000003385 sodium Chemical class 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
Landscapes
- Fire-Extinguishing Compositions (AREA)
Abstract
The invention belongs to the field of fire fighting, and particularly relates to a fire extinguishing agent for extinguishing sodium fire. The fire extinguishing agent contains 98.9-99.9% of C, 0-0.03% of sulfur, 0.1-1% of water, 0-0.04% of nitrogen, 0-0.03% of chlorine and 0.120-0.820 g/cm of bulk density3The particle size is 32-80 meshes, the oversize product is more than or equal to 80%, the pH value is 3-7, the volatile matter is less than or equal to 10%, and the ash is less than or equal to 10%. The invention provides the extinguishing agent which has the advantages of quick sodium fire extinguishing speed, high expansion ratio, no pollution to burning sodium, easy recovery, no pollution to the environment, no harmful gas generation and capability of being filled into a special fire extinguisher to effectively extinguish sodium fire.
Description
Technical field
The invention belongs to fire-fighting domain, be specifically related to a kind of extinguishing chemical of the sodium fire usefulness of going out.
Background technology
Sodium is a kind of very active metallic element; very easily in air, burn; very big fire is arranged; the flame of sodium fire is very low; and the dense smoke of adularescent is the sodium aerosol; this aerosol has strong basicity, has the serious ability of burning for the skin of humans and animals, and is serious to the infringement of eyes and respiratory system especially.Therefore, need a kind of extinguishing chemical of the sodium fire usefulness of efficiently going out, and this extinguishing chemical can be sprayed by special-purpose fire extinguisher or special fixture.
The characteristics of sodium fire are: surface combustion, and caloric value is big, and produces a large amount of dense smoke, and personnel are difficult to closely put out a fire, and the fire power of regeneration is strong, is difficult for putting out, and second-time burning takes place easily.The chemism of sodium has determined that again water, carbon dioxide and organic class extinguishing chemical etc. can't be used for putting out of sodium fire, and common dry powder class such as sodium acid carbonate extinguishing chemical is because proportion is too big, sink to the bottom easily, and sodium acid carbonate decomposition generation water, so the fire extinguishing that is used for the sodium fire all is inappropriate.
Alkali metal manufacturer is not owing to there is suitable extinguishing chemical now.Therefore, all adopt salt and sand to handle the sodium fire incident temporarily.Because the ratio weight average of sand and salt is heavier than alkali metal, sinks to the bottom easily, thereby high-temperature sodium is exposed to again take place in the air second-time burning, so be not very desirable for putting out alkali metal fire such as sodium fire.It is the lightest that the extinguishing chemical that is used for alkali metal fire such as sodium fire cans be compared to liquid alkali metal most, and do not react with alkali metal.
Summary of the invention
(1) goal of the invention
The invention provides a kind ofly have the sodium that goes out is spent soon at top speed, expansion multiplying power is high, do not pollute burning sodium, be easy to recovery, environmentally safe, no pernicious gas produce, the extinguishing chemical of sodium fire usefulness that can effectively go out, and can make this extinguishing chemical be applicable to special-purpose fire extinguisher or special fixture.
(2) technical scheme
For achieving the above object, the invention provides following technical scheme.
A kind of extinguishing chemical of the sodium fire usefulness of going out, in this extinguishing chemical C content between 98.9～99.9%, sulfur content 0～0.03%, moisture 0.1～1%, nitrogen content 0～0.04%, chlorinity 0～0.03%, bulk density is at 0.120～0.820g/cm
3Between, particle diameter is 32～80 orders, oversize 〉=80%, the pH value between 3～7, fugitive constituent≤10%, ash≤10%.
(3) implementation result
The extinguishing chemical of this sodium fire usefulness of going out adopts graphite as substrate material, and the bulk density changeability of this extinguishing chemical is big, at (0.120～0.820) g/cm
3Between, back expansion rate height is heated, (30～400) doubly between, this extinguishing chemical has characteristics such as chemical stability is good, high-temperature behavior is good, the solubility in liquid metal sodium is little, good fluidity simultaneously, can spray by special-purpose fire extinguisher or fixture, the sodium fire is had very high fire-fighting efficiency.This extinguishing chemical sprays in burning sodium surface by special-purpose fire extinguisher or fixture, expanded by heating forms fluffy separation layer above burner body, stoped the convection current conduction between air and the combustion front effectively, cut off the approach that oxygen arrives at the combustion zone, sodium cause of fire anoxia asphyxia and extinguishing.This mode has been controlled the burning of sodium, has stopped the aerocolloidal generation of sodium, has avoided second-time burning, has the sodium that goes out is spent soon at top speed, expansion multiplying power is high, do not pollute burning sodium, is easy to characteristics such as recovery, environmentally safe, no pernicious gas generation.
The specific embodiment
Below in conjunction with specific embodiment technical scheme of the present invention is further elaborated.
Embodiment:
The extinguishing chemical of this sodium fire usefulness of going out adopts graphite as substrate material, a kind of graphite material after acidification, preferred value of the present invention is: C content is 99.5%, sulfur content 0.02%, moisture 0.45%, nitrogen content 0.02%, chlorinity 0.01%, bulk density is at 0.620g/cm
3Between, particle diameter is 50 orders, oversize 85%, pH value 5, fugitive constituent 9%, ash 6%.
The content of each composition can also be in this extinguishing chemical: C content between 98.9～99.9%, sulfur content 0～0.03%, moisture 0.1～1%, nitrogen content 0～0.04%, chlorinity 0～0.03%, bulk density is at 0.120～0.820g/cm
3Between, particle diameter is 32～80 orders, oversize 〉=80%, the pH value between 3～7, fugitive constituent≤10%, ash≤10%.
The bulk density changeability of this extinguishing chemical is big, at (0.120～0.820) g/cm
3Between, the back expansion rate of being heated is higher, (30～400) doubly between, this extinguishing chemical has characteristics such as chemical stability is good, high-temperature behavior is good, the solubility in liquid metal sodium is little, good fluidity simultaneously, can spray by special fire extinguisher or fixture, the sodium fire is had very high fire-fighting efficiency.This extinguishing chemical sprays in burning sodium surface, expanded by heating, above burner body, form fluffy separation layer, stoped the convection current conduction between air and the combustion front effectively, cut off the approach that oxygen arrives at the combustion zone, sodium cause of fire anoxia asphyxia and extinguishing, this mode has been controlled the burning of sodium, stopped the aerocolloidal generation of sodium, avoided second-time burning, had the sodium that goes out is spent soon at top speed, expansion multiplying power is high, do not pollute burning sodium, be easy to characteristics such as recovery, environmentally safe, no pernicious gas generation.
Claims (1)
1. extinguishing chemical of sodium fire usefulness that goes out is characterized in that: in this extinguishing chemical C content between 98.9～99.9%, sulfur content 0～0.03%, moisture 0.1～1%, nitrogen content 0～0.04%, chlorinity 0～0.03%; Bulk density is at 0.120～0.820g/cm
3Between, particle diameter is 32～80 orders, oversize 〉=80%; The pH value between 3～7, volatile matter≤10%, ash content≤10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101352322A CN101332347B (en) | 2008-08-06 | 2008-08-06 | Fire extinguishing agent for sodium fire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101352322A CN101332347B (en) | 2008-08-06 | 2008-08-06 | Fire extinguishing agent for sodium fire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101332347A CN101332347A (en) | 2008-12-31 |
| CN101332347B true CN101332347B (en) | 2011-08-24 |
Family
ID=40195392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101352322A Active CN101332347B (en) | 2008-08-06 | 2008-08-06 | Fire extinguishing agent for sodium fire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101332347B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106563223A (en) * | 2016-11-10 | 2017-04-19 | 合肥辰泰安全设备有限责任公司 | Method of extinguishing alkali metal fire |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4177152A (en) * | 1976-11-22 | 1979-12-04 | Ceca S.A. | Method of extinguishing metal fires |
| CN1927424A (en) * | 2006-10-17 | 2007-03-14 | 中国原子能科学研究院 | Fixed expanded graphite fire extinguishing device |
| CN200963462Y (en) * | 2006-10-17 | 2007-10-24 | 中国原子能科学研究院 | Handcart type expansion graphite fire extinguishing apparatus |
-
2008
- 2008-08-06 CN CN2008101352322A patent/CN101332347B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4177152A (en) * | 1976-11-22 | 1979-12-04 | Ceca S.A. | Method of extinguishing metal fires |
| CN1927424A (en) * | 2006-10-17 | 2007-03-14 | 中国原子能科学研究院 | Fixed expanded graphite fire extinguishing device |
| CN200963462Y (en) * | 2006-10-17 | 2007-10-24 | 中国原子能科学研究院 | Handcart type expansion graphite fire extinguishing apparatus |
Non-Patent Citations (1)
| Title |
|---|
| 申凤阳等.膨胀石墨灭火系列设备的研究.《消防科学与技术》.2003,第22卷(第4期),317-319、330. * |
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| Publication number | Publication date |
|---|---|
| CN101332347A (en) | 2008-12-31 |
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