JPH066176B2 - Powder fire extinguishing agent for metal fire - Google Patents
Powder fire extinguishing agent for metal fireInfo
- Publication number
- JPH066176B2 JPH066176B2 JP60004021A JP402185A JPH066176B2 JP H066176 B2 JPH066176 B2 JP H066176B2 JP 60004021 A JP60004021 A JP 60004021A JP 402185 A JP402185 A JP 402185A JP H066176 B2 JPH066176 B2 JP H066176B2
- Authority
- JP
- Japan
- Prior art keywords
- fire
- extinguishing agent
- powder
- metal
- fire extinguishing
- 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.)
- Expired - Lifetime
Links
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- Fire-Extinguishing Compositions (AREA)
Description
【発明の詳細な説明】 高速中性子を連鎖反応に用いる原子炉では、炉の熱媒体
として液体ナトリウムとか、ナトリウム−カリウムの混
合物を使っている。もし空気中の媒体の管路で破損等が
あると、漏洩した高温の媒体は着火し、重大な事故を発
生する。またマグネシムウやアルミニウムやチタンの切
削等を行っている事業所においても、しばしばこれらの
金属から火災が発生する。こうした火災に対して、従来
炭酸ナトリウム、塩化ナトリウム、炭酸ナトリウム１水
塩と炭酸リチウムの混合物、シリカ、黒鉛等を基質とし
た粉末消火薬剤が使用されている。また砂、火山灰、長
石粉等も使用されているが、たいして効果のないものと
か、あるいはせいぜい１乃至２種類の金属火災にしか効
果が認められる程度のものしかなかった。DETAILED DESCRIPTION OF THE INVENTION In a nuclear reactor using fast neutrons in a chain reaction, liquid sodium or a mixture of sodium-potassium is used as a heating medium of the reactor. If there is a break in the pipeline of the medium in the air, the leaked high-temperature medium will ignite, causing a serious accident. In addition, fires often occur from these metals at business sites that are cutting magnesium, aluminum or titanium. Against such a fire, powder fire extinguishing agents using sodium carbonate, sodium chloride, a mixture of sodium carbonate monohydrate and lithium carbonate, silica, graphite or the like as a substrate have been conventionally used. In addition, sand, volcanic ash, feldspar powder, etc. are also used, but they are not so effective, or only at most effective for one or two kinds of metal fires.
本発明はナトリウム、カリウム、マグネシウム、アルミ
ニウムの火災は勿論のこと、今まで消火の難しかったチ
タン火災にも有効に消火できる消火薬剤を提供するもの
である。The present invention provides a fire extinguishing agent that can effectively extinguish not only sodium, potassium, magnesium and aluminum fires but also titanium fires that have been difficult to extinguish until now.
本発明の粉末消火薬剤は無水炭酸ナトリウム、無水炭酸
カリウム、及び無水炭酸リチウムを基剤とし、そのいず
れかが10乃至70 mol％であって、これに僅かの粉砕助剤
と前記基剤の表面処理剤を含む組成を特徴としている。The powder fire-extinguishing agent of the present invention is based on anhydrous sodium carbonate, anhydrous potassium carbonate, and anhydrous lithium carbonate, one of which is 10 to 70 mol%, and a slight amount of grinding aid and the surface of the above-mentioned base. It is characterized by a composition containing a treating agent.
以下実施例によって本発明を説明する。The present invention will be described below with reference to examples.
この粉末消火薬剤は一例として、次のように製造され
る。すなわち、無水炭酸ナトリウム、無水炭酸カリウ
ム、及び無水炭酸リチウムを粉砕し、微粉にする。そし
て粉砕助剤としてファインシリカ、アルミナ、タルク、
硫化モリブデン、黒鉛等適宜１種以上加える。これは粉
末の固化防止及び流動性に効果がある。そして従来より
採用されている方法により、粉末の表面処理をする。こ
の表面処理によって粉末に防湿、撥水性をもたせる。表
面処理剤としては、ポリシロキサン類、シラン類、また
は金属ステアレート等が使用できる。そしてこれら粉砕
助剤や、表面処理剤は全量のほぼ数Wt％以下が適量であ
る。As an example, this powder fire extinguishing agent is manufactured as follows. That is, anhydrous sodium carbonate, anhydrous potassium carbonate, and anhydrous lithium carbonate are pulverized into fine powder. And fine silica, alumina, talc, as a grinding aid,
Appropriately one or more kinds such as molybdenum sulfide and graphite are added. This is effective in preventing solidification of powder and fluidity. Then, the surface treatment of the powder is performed by the method that has been conventionally adopted. This surface treatment makes the powder moisture-proof and water-repellent. As the surface treatment agent, polysiloxanes, silanes, metal stearate, or the like can be used. The appropriate amount of these grinding aids and surface treatment agents is about several Wt% or less of the total amount.
この粉末消火薬剤は無水炭酸ナトリウム31.5mol％、無
水炭酸カリウム25.0mol％、無水炭酸リチウム43.5 mol
％とした場合、その共融点は397℃であって、消火対象
とする各金属の燃焼温度よりずっと低い。従って燃焼し
ている金属にこの粉末消火薬剤を撒布した場合、その燃
焼している金属の熱で容易に溶融し、その金属の表面を
溶融した薬剤で覆い、空気を遮断し消火する。その際、
前記表面処理剤であるポリシロキサン類、シラン類、金
属ステアレート、スァインシリカ等は、この粉末消火薬
剤の溶融物にさらに粘性を増加し、被覆体の亀裂を防ぐ
のに役立っている。またこの溶融、粘性をもつことに関
連して、実際火災の場において配管等に付着し易くな
る。特に立体的な火災、例えば溶融ナトリウムが、フラ
ンジ接合部やパイプ破損部から漏れたような場合、この
部分に撒布すると、薬剤は溶融粘着し、火災を消火でき
る。This powder fire extinguisher is anhydrous sodium carbonate 31.5mol%, anhydrous potassium carbonate 25.0mol%, anhydrous lithium carbonate 43.5mol.
%, The eutectic point is 397 ° C., which is much lower than the combustion temperature of each metal to be extinguished. Therefore, when the powdered fire extinguishing agent is spread over the burning metal, it is easily melted by the heat of the burning metal, the surface of the metal is covered with the molten agent, and the air is shut off to extinguish the fire. that time,
The surface-treating agents such as polysiloxanes, silanes, metal stearates and sine silica further increase the viscosity of the powder fire extinguishing agent melt and help prevent cracking of the coating. In addition, in connection with this melting and viscous property, it becomes easy to adhere to pipes and the like in an actual fire place. In particular, in the case of a three-dimensional fire, for example, when molten sodium leaks from a flange joint portion or a broken pipe portion, the medicine melts and adheres to the portion when sprayed on this portion, and the fire can be extinguished.
次に各処方による消火実験例を挙げる。Next, examples of fire extinguishing experiments by each prescription are given.
実験例１、 600℃に保たれた電気炉内に、ステンレス
鋼製のルツボ（径８．３cm ５４cm2）にナトリウム50
ｇを入れ、２分燃焼させ定常燃焼状態とする。これに本
発明の粉末消火薬剤30ｇを撒布した。その結果瞬時に消
火した。この場合ナトリウムは600℃に保たれており、2
0分経過しても再燃しない。さらにこの粉末消火薬剤20
ｇ量で、ナトリウム50ｇを消火できることを確認した。
この場合の粉末消火薬剤の処方は、無水炭酸ナトリウム
56.0 mol％、無水炭酸カリウム15.3mol％、無水炭酸リ
チウム28.7 mol％で、粉砕助剤としてファインシリカ0.
5Wt％、表面処理剤としてリチウムステアレートを2.0Wt
％添加し、140℃で２時間混合乾燥したものである。Experimental Example 1 Sodium in a stainless steel crucible (diameter 8.3 cm 54 cm 2 ) 50 in an electric furnace kept at 600 ° C.
g is put in, and it burns for 2 minutes to make a steady burning state. To this, 30 g of the powder fire extinguishing agent of the present invention was applied. As a result, the fire was extinguished instantly. In this case the sodium was kept at 600 ° C and
Does not reburn even after 0 minutes. Furthermore, this powder extinguishing agent 20
It was confirmed that 50 g of sodium could be extinguished by the amount of g.
In this case, the powder fire extinguishing agent should be formulated with anhydrous sodium carbonate.
56.0 mol%, anhydrous potassium carbonate 15.3 mol%, anhydrous lithium carbonate 28.7 mol%, fine silica as a grinding aid 0.
5Wt%, 2.0Wt lithium stearate as a surface treatment agent
%, And mixed and dried at 140 ° C. for 2 hours.
実験例2. 粉末消火薬剤として無水炭酸ナトリウム31.5
mol％、無水炭酸カリウム25.0mol％、無水炭酸リチウ
ム43.5mol％、粉砕助剤としてファインシリカ0.5Wt％、
黒鉛4.0Wt％、表面処理剤は実験例1.と同じもの30ｇを
用い、実験例1.と同条件でルツボに撒布したところ瞬時
に消火し、20分経過後再燃しない。Experimental example 2. Powdered fire extinguishing agent anhydrous sodium carbonate 31.5
mol%, anhydrous potassium carbonate 25.0mol%, anhydrous lithium carbonate 43.5mol%, fine silica 0.5Wt% as a grinding aid,
4.0 Wt% graphite, 30 g of the same surface treatment agent as in Experimental Example 1 was used, and when the crucible was sprinkled under the same conditions as in Experimental Example 1, the fire extinguished immediately, and it did not reignite after 20 minutes.
実験例3. 鉄製容器（23cm×23cm，529cm2）にナトリウ
ム800ｇを入れ、ガスバーナーで加熱し燃焼させ、600℃
に達した時、実験例1.の消火薬剤を250ｇ撒布したとこ
ろ瞬時に消火した。600℃に保って20分経過後再燃しな
い。Experimental example 3. 800 g of sodium was put into an iron container (23 cm x 23 cm, 529 cm 2 ), heated with a gas burner and burned at 600 ° C.
When it reached, 250 g of the fire extinguishing agent of Experimental Example 1 was sprinkled, and the fire was extinguished instantly. Keep at 600 ℃ and do not re-ignite after 20 minutes.
実験例4. 実験例1.と同条件で、ルツボにカリウム50ｇ
を入れ、定常燃焼となった後、実験例1.の消火薬剤30ｇ
を撒布したところ瞬時に消火し、20分経過して再燃しな
い。Experimental Example 4. Under the same conditions as in Experimental Example 1, 50 g of potassium was added to the crucible.
After putting in and becoming a steady combustion, 30g of fire extinguishing agent of Experimental example 1.
After extinguishing, extinguishes instantly and does not re-ignite after 20 minutes.
実験例5. 実験例1.と同条件でルツボにマグネシウム50
ｇを入れ、定常燃焼となった後実験例1.の粉末薬剤30ｇ
を撒布、瞬時に消火し、20分経過後再燃しない。Experimental Example 5. Magnesium 50 was added to the crucible under the same conditions as in Experimental Example 1.
30g of powdered medicine of Experimental Example 1 after adding g
Disperse, extinguish immediately, do not re-ignite after 20 minutes.
実験例6. 実験例1.と同条件で、ルツボにアルミニウム
50ｇを入れ定常燃焼となった後、実験例1.の粉末消火薬
剤30ｇを撒布した、瞬時に消火し、20分経過後再燃しな
い。Experimental Example 6. Under the same conditions as in Experimental Example 1, aluminum was applied to the crucible.
After adding 50g and becoming a steady combustion, 30g of the powder fire extinguishing agent of Experimental Example 1 was sprinkled, extinguishes instantly, and does not refire after 20 minutes.
実験例7. 実験例1.と同条件でルツボにチタン50ｇを入
れ、定常燃焼となった後、実験例１の粉末消火薬剤30ｇ
を撒布した。瞬時に消火し20分経過後再燃しない。Experimental Example 7. 50 g of titanium was put into the crucible under the same conditions as in Experimental Example 1, and after steady combustion, powder extinguishing agent of Experimental Example 1 of 30 g was added.
Was sprinkled. Extinguishes instantly and does not reignite after 20 minutes.
実験例8. テストピース（4cm×8cm×0.1cm鉄製）を600
℃に保たれている電気炉に入れ、約１時間加熱する。こ
れを粉末薬剤（200mlトールビーカーに一杯入れる）に
約３秒間挿入し、粉末薬剤の付着量を測定する。これは
前述する溶融付着性を、他の公知の金属火災用粉末消火
薬剤と比較したものである。Experiment 8. 600 test pieces (4cm x 8cm x 0.1cm iron)
Place in an electric furnace maintained at ℃ and heat for about 1 hour. This is inserted into a powdered drug (fully placed in a 200 ml tall beaker) for about 3 seconds, and the amount of the powdered drug attached is measured. This compares the above-mentioned melt adhesion with other known powder fire extinguishing agents for metal fires.
本発明による金属火災用粉末消火薬剤は、以上のように
ナトリウムは勿論のこと、他のマグネシウム、アルミニ
ウム、チタン等の金属火災も消火できる。そして付着力
も他の同種の薬剤より優れているので、原子炉等の立体
的な火災に対し有効である。 As described above, the powder fire extinguishing agent for metal fires according to the present invention can extinguish not only sodium but also other metal fires of magnesium, aluminum, titanium and the like. Since it has a superior adhesive force to other similar chemicals, it is effective against a three-dimensional fire such as a nuclear reactor.
Claims (1)
び無水炭酸リチウムを含み、そのいずれかが10乃至70 m
ol％であることを特徴とする金属火災用粉末消火薬剤。1. Anhydrous sodium carbonate, anhydrous potassium carbonate and anhydrous lithium carbonate, either of which is 10 to 70 m
Powder fire extinguishing agent for metal fire, characterized by being ol%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60004021A JPH066176B2 (en) | 1985-01-16 | 1985-01-16 | Powder fire extinguishing agent for metal fire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60004021A JPH066176B2 (en) | 1985-01-16 | 1985-01-16 | Powder fire extinguishing agent for metal fire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61162963A JPS61162963A (en) | 1986-07-23 |
| JPH066176B2 true JPH066176B2 (en) | 1994-01-26 |
Family
ID=11573311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60004021A Expired - Lifetime JPH066176B2 (en) | 1985-01-16 | 1985-01-16 | Powder fire extinguishing agent for metal fire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH066176B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008235050A (en) * | 2007-03-22 | 2008-10-02 | Sumitomo Wiring Syst Ltd | Connector |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS528698A (en) * | 1975-07-09 | 1977-01-22 | Shiyoubouchiyou Chokan | Fire extinguishing agent for alkali metal fire |
| JPS5335298A (en) * | 1976-09-14 | 1978-04-01 | Nippon Dry Chemical Kk | Powder fire extinguishing agent for naturally flammable liquid |
| JPS5839550A (en) * | 1981-09-04 | 1983-03-08 | Nissan Motor Co Ltd | Anti-fogging device for rear side pane of automobile |
-
1985
- 1985-01-16 JP JP60004021A patent/JPH066176B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61162963A (en) | 1986-07-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |