DE2206019C3 - Fire extinguishing powder - Google Patents
Fire extinguishing powderInfo
- Publication number
- DE2206019C3 DE2206019C3 DE19722206019 DE2206019A DE2206019C3 DE 2206019 C3 DE2206019 C3 DE 2206019C3 DE 19722206019 DE19722206019 DE 19722206019 DE 2206019 A DE2206019 A DE 2206019A DE 2206019 C3 DE2206019 C3 DE 2206019C3
- Authority
- DE
- Germany
- Prior art keywords
- extinguishing
- fire extinguishing
- potassium hydrogen
- extinguishing powder
- hydrogen carbonate
- 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
Links
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
- A62D1/0007—Solid extinguishing substances
- A62D1/0014—Powders; Granules
Description
Gegenstand der Erfindung sind Feuerlöschpulver aus Kaliumhydrogenkarbonat und Calciumkarbonat.The invention relates to fire extinguishing powders made from potassium hydrogen carbonate and calcium carbonate.
Aus der DE-AS 10 98 368 sind schaumverträgliche Löschpulver bekannt, die aus Kaliumhydrogencarbonat und 10 bis 40 Gew.-% einer Mischung von Magnesium- und Calciumkarbonat bestehen, wobei das Mischungsverhältnis der Karbonate zwischen 1 zu 2 bis 1 zu 1 liegen kann. Aus derDE-AS 11 60 736 ist zu entnehmen, daß sich die Schaumstabilität eines Bikarbonat-Löschpulvers durch einen Gehalt an Gemischen von Magnesiumkarbonat und Calciumkarbonat verbessern läßt.From DE-AS 10 98 368 foam-compatible extinguishing powders are known which are made from potassium hydrogen carbonate and 10 to 40% by weight of a mixture of magnesium and calcium carbonate, the mixing ratio the carbonates can range from 1 to 2 to 1 to 1. From DE-AS 11 60 736 it can be seen that that the foam stability of a bicarbonate extinguishing powder by a content of mixtures of Magnesium carbonate and calcium carbonate can improve.
Es ist ferner bekannt, daß die Löschwirksamkeit von Kaliumhydrogenkarbonat bei Flammenbränden um etwa 50% größer ist, als die von Natriumhydrogenkarbonat. Einem breiteren Einsatz von Kaliumhydrogenkarbonat steht aber sein vergleichsweise hoher Preis entgegen, selbst wenn man berücksichtigt, daß Kaliumhydrogenkarbonat bei gleichem Gewicht die höhere Löschreserve bietet.It is also known that the extinguishing effectiveness of potassium hydrogen carbonate in flame fires around is about 50% larger than that of sodium hydrogen carbonate. A wider use of potassium hydrogen carbonate but this is offset by its comparatively high price, even if one takes into account the fact that potassium hydrogen carbonate is used offers the higher extinguishing reserve for the same weight.
Es wurde nun gefunden, daß die Löschwirksamkeit von Feuerlöschpulvern aus Kaliumhydrogenkarbonat und Calciumkarbonat wesentlich höher ist, wenn die Pulver aus 40 bis 60 Gew.-% Kaliumhydrogenkarbonat und 60 bis 40 Gew.-°/o Calciumkarbonat bestehen.It has now been found that the extinguishing effectiveness of fire extinguishing powders made from potassium hydrogen carbonate and calcium carbonate is much higher when the powders are 40 to 60 wt% potassium hydrogen carbonate and 60 to 40% by weight of calcium carbonate.
Selbstverständlich werden die Pulver mit handelsüblichen Mitteln hydrophobiert und rieselfähig gehalten.It goes without saying that the powders are made water-repellent with commercially available agents and kept free-flowing.
Die Schaumverträglichkeit der erfindungsgemäßen Löschpulver steht der von amtlich zugelassenen, handelsüblichen BCE-Pulvern nicht nach.The foam compatibility of the extinguishing powder according to the invention is that of officially approved, commercially available BCE powders.
Die folgenden Vergleichsversuche zeigen die Überlegenheit der erfindungsgemäßen Löschpulver:The following comparative tests show the superiority of the extinguishing powder according to the invention:
Als Brandobjekt diente eine Brandwanne 35 χ 80 χ 23 cm (0,28 m2), die mit 5 1 Wasser als Puffer und 101 Vergaserkraftstoff gefüllt war. Gelöscht' wurde nach 60 see Vorbrand von der Schmalseite der Wanne ίο aus.A fire pan 35 × 80 × 23 cm (0.28 m 2 ), which was filled with 5 liters of water as a buffer and 101 carburetor fuel, served as the fire object. It was extinguished after 60 seconds of pre-fire from the narrow side of the tub ίο.
Es wurde die Pulvermenge in g ermittelt, die zum Ablöschen nötig war. Die Ergebnisse sind in der Tibelle dargestellt.The amount of powder in g that was necessary for extinguishing was determined. The results are in the Tibelle shown.
Der besondere Vorteil der erfindungsgemäßen Pulver liegt darin, daß sie bei gleichem Löschergewicht eine erheblich höhere Löschreserve bieten, was vor allem bei solchen Löschern wichtig ist, die z. B. in Kraftfahrzeugen mitgeführt werden. Außerdem wurde festgestellt, daß die Rückzündungsgefahr bei den erfindungsgemäßen Pulvern geringer ist. Dies ist ein erheblicher zusätzlicher Vorteil.The particular advantage of the powder according to the invention is that, with the same extinguisher weight, they have a offer significantly higher extinguishing reserves, which is especially important for those extinguishers that use z. B. in motor vehicles be carried. It was also found that the risk of re-ignition in the inventive Powders is less. This is a significant additional benefit.
Claims (1)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE795244D BE795244A (en) | 1972-02-09 | FIRE EXTINGUISHING POWDER | |
| DE19722206019 DE2206019C3 (en) | 1972-02-09 | 1972-02-09 | Fire extinguishing powder |
| NL7301536A NL7301536A (en) | 1972-02-09 | 1973-02-02 | |
| LU66984A LU66984A1 (en) | 1972-02-09 | 1973-02-07 | |
| FR7304670A FR2171367A1 (en) | 1972-02-09 | 1973-02-09 | Fire extinguisher powder - consisting of mixture of potassium bicarbonate and calcium or magnesium carbonate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722206019 DE2206019C3 (en) | 1972-02-09 | 1972-02-09 | Fire extinguishing powder |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2206019A1 DE2206019A1 (en) | 1973-08-23 |
| DE2206019B2 DE2206019B2 (en) | 1978-01-12 |
| DE2206019C3 true DE2206019C3 (en) | 1982-12-09 |
Family
ID=5835459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19722206019 Expired DE2206019C3 (en) | 1972-02-09 | 1972-02-09 | Fire extinguishing powder |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE795244A (en) |
| DE (1) | DE2206019C3 (en) |
| FR (1) | FR2171367A1 (en) |
| LU (1) | LU66984A1 (en) |
| NL (1) | NL7301536A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2756324B2 (en) * | 1977-12-17 | 1979-12-20 | Total Foerstner & Co, 6802 Ladenburg | Fire extinguishing powder |
| FR2451201A1 (en) * | 1979-03-13 | 1980-10-10 | Chevrier Andre | Extinguishing powder contg. vegetal prod. pref. of marine origin - partic. calcium and magnesium contg. seaweed e.g. Lithothamnium calcareum and Maerl |
| HU201478B (en) * | 1983-04-21 | 1990-11-28 | Magyar Szenhidrogenipari | Fire-fighting powder |
| WO1990011800A1 (en) * | 1989-04-10 | 1990-10-18 | Aquamot Ag | Process for fighting and extinguishing fires and device for implementing it |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL244961A (en) * | 1959-07-21 | |||
| NL296016A (en) * | 1962-08-01 |
-
0
- BE BE795244D patent/BE795244A/en unknown
-
1972
- 1972-02-09 DE DE19722206019 patent/DE2206019C3/en not_active Expired
-
1973
- 1973-02-02 NL NL7301536A patent/NL7301536A/xx unknown
- 1973-02-07 LU LU66984A patent/LU66984A1/xx unknown
- 1973-02-09 FR FR7304670A patent/FR2171367A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2171367A1 (en) | 1973-09-21 |
| DE2206019A1 (en) | 1973-08-23 |
| NL7301536A (en) | 1973-08-13 |
| LU66984A1 (en) | 1974-10-01 |
| FR2171367B1 (en) | 1977-07-22 |
| BE795244A (en) | 1973-08-09 |
| DE2206019B2 (en) | 1978-01-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) | ||
| 8339 | Ceased/non-payment of the annual fee |