DE742233C - Sodium bicarbonate dry fire extinguisher - Google Patents

Sodium bicarbonate dry fire extinguisher

Info

Publication number
DE742233C
DE742233C DEC56343D DEC0056343D DE742233C DE 742233 C DE742233 C DE 742233C DE C56343 D DEC56343 D DE C56343D DE C0056343 D DEC0056343 D DE C0056343D DE 742233 C DE742233 C DE 742233C
Authority
DE
Germany
Prior art keywords
sodium bicarbonate
dry fire
fire extinguishing
fire extinguisher
extinguishing agent
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
Application number
DEC56343D
Other languages
German (de)
Inventor
Thorwald Creutz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Creutz & Co
Original Assignee
Creutz & Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Creutz & Co filed Critical Creutz & Co
Priority to DEC56343D priority Critical patent/DE742233C/en
Application granted granted Critical
Publication of DE742233C publication Critical patent/DE742233C/en
Expired legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62DCHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D1/00Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
    • A62D1/0007Solid extinguishing substances
    • A62D1/0014Powders; Granules

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Extinguishing Compositions (AREA)

Description

Natriumbicarbonat-Trockenfeuerlöschmittel Die Erfindung betrifft ein Natriumbicarbonat-Trockenfeuerlöschmittel.Sodium bicarbonate dry fire extinguishing agent The invention relates to a Sodium bicarbonate dry fire extinguishing agent.

Man hat dem Feuerlöschmittel Natriumbicarbonat bereits Aluminiumsilicate zugesetzt.The fire extinguishing agent sodium bicarbonate already has aluminum silicates added.

Gemäß der Erfindung. enthält das Feuerlöschmittel Bentonit an Stelle der bekannten Zusätze, wie Kaolin oder Ton. Bentonit hat gegenüber den genannten Silicaten den Vorteil, daß er schon an sich, d. h. ohne besondere Mahlung, aus Teilchen besteht, die unter der mikroskopischen Sichtbarkeit liegen. Er wirkt als Zusatzstoff zu dem Trockenlöschmittel verteilend und stäubend. Auch ermöglicht Bentonit, und zwar auf Grund seiner Fähigkeit, Wasser in großer Menge ohne Änderung seines Aggregatzustandes zu binden, daß das Natriumbicarbonat in fein gemahlenem Zustand als Löschmittel benutzt werden kann. Das Talkumpulver wirkt, wie bekannt, wasserabstoßend. Beide Zusatzstoffe gelangen in Form unfühlbarer Pulver zur Verwendung und bewirken, daß das Löschmittel gleichzeitig als Löschstauhbildnerund Löschgasbildner beim Löschen von Bränden dient.According to the invention. contains the fire extinguishing agent bentonite in place the well-known additives such as kaolin or clay. Bentonite has opposite to the said Silicates have the advantage that they are inherently, i. H. without special grinding, made of particles that are below microscopic visibility. It acts as an additive distributing and dusting to the dry chemical. Bentonite also allows, and because of its ability to absorb water in large quantities without changing its physical state to bind that the sodium bicarbonate in finely ground state as an extinguishing agent can be used. As is known, the talcum powder has a water-repellent effect. Both Additives come in the form of imperceptible powders for use and have the effect that the extinguishing agent at the same time as an extinguishing builder and extinguishing gas when extinguishing of fires.

Ein Löschpulver gemäß der Erfindung besteht z. B. aus 9o °/a fein gemahlenem (Din-Sieb 5o, d. h. 250o Maschenfeinheit entsprechend) N atriumbicarbonat, 6°/o feinpulverigem deutschem Bentonit (dem Din-Sieb i2o, d. h. i44oo Maschenfeinheit entsprechend) und 4 °/o unfühlbarem T'alkumpulver (dem Din-Sieb 8o, d. h. 64oo Maschenfeinheit entsprechend).An extinguishing powder according to the invention consists, for. B. from 90 ° / a fine ground (Din sieve 5o, i.e. 250o mesh size accordingly) sodium bicarbonate, 6% fine powdered German bentonite (the Din sieve i2o, i.e. i44oo mesh fineness correspondingly) and 4 ° / o imperceptible T'alcum powder (the Din sieve 8o, i.e. 64oo mesh fineness corresponding).

Dieses Gemisch weist dementsprechend im Durchschnitt eine Maschenfeinheit von nicht weniger als 3370 gegenüber dem Durchschnitt von 576 der bekannten Natriumbicarbonat-Trockenfeuerlöschmittel auf.This mixture accordingly has an average mesh size of no less than 3370 compared to the average of 576 of the known sodium bicarbonate dry fire extinguishing agents.

Im Gegensatz zu den bekannten gröberen Trockenfeuerlöschmitteln kann es in den auf dem Markt unter der Bezeichnung Branus-Feuerlöscher bekannten Apparaten, die aus einem einseitig geschlossenen und an der anderen Seite mit einer weiten Ausstoßdüse versehenem Rohr bestehen, mit Erfolg verwendet werden, ohne daß die Ausstoßdüse Verstopfungen erleidet. Infolge der Fähigkeit des Bentonits. die Feuchtigkeit der Löschmittelmischung vollständig zu absorbieren. kann nämlich eine Klumpenbildung des Feuerlöschmittels nicht auftreten. Die Feinpulverigkeit des erfindungsgemäßen Trockenfeuerlöschmittels bewirkt ferner, daß die damit behandelten Brände rascher als mit den bekannten grobkörnigeren Trockenfeuerlöschmittelmischungen zuin Erlöschen kommen.In contrast to the known coarser dry fire extinguishing agents it in the apparatus known on the market as the Branus fire extinguisher, the one closed on one side and one on the other side with a pipe provided with a wide discharge nozzle can be used with success, without the discharge nozzle becoming clogged. As a result of the ability of bentonite. to completely absorb the moisture of the extinguishing agent mixture. namely can clumping of the fire extinguishing agent does not occur. The fine powderiness of the dry fire extinguishing agent according to the invention also causes the treated therewith Fires faster than with the well-known, coarse-grained dry fire extinguishing agent mixtures come to extinction.

Claims (1)

PATENTANSPRUCH: N atriuinbicarbonat -Trockenfeuerlöschmittel, bestehend aus einem innigen Gemisch von fein gemahlenem NTatriumbicarbonat finit einer geringen Menge von zu unfühlbaren Pulvern zermahlenem Talkum und Bentonit. Zur Abgrenzung des Anmeldungsgegenstandes vorn Stand der Technik sind im Erteilungsverfahren folgende Druckschriften in Betracht gezogen worden: deutsche Patentschrift NTr. 639 05:I; französische Patentschrift Nr. 801 z08, 378 286; britische Patentschrift r. 738 (1901), 21 168 t 19o9 j ; amerikanische Patentschrift K r. 625 293; rausch, Das chemische Feuerlöschwesen (, i939) S. C) und 1o.CLAIM OF THE PATENT: N atriuin bicarbonate dry fire extinguishing agent, consisting of an intimate mixture of finely ground sodium bicarbonate finite, a small amount of talc and bentonite, which has been ground into impalpable powders. To distinguish the subject of the application from the state of the art, the following publications were considered in the granting procedure: German patent specification NTr. 639 05: I; French Patent No. 801 z08, 378 286; British patent r. 738 (1901), 21,168 t 19o9 j; American patent K r. 625 293; rausch, The chemical fire extinguishing system (, 1939) p. C) and 1o.
DEC56343D 1941-02-28 1941-02-28 Sodium bicarbonate dry fire extinguisher Expired DE742233C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEC56343D DE742233C (en) 1941-02-28 1941-02-28 Sodium bicarbonate dry fire extinguisher

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC56343D DE742233C (en) 1941-02-28 1941-02-28 Sodium bicarbonate dry fire extinguisher

Publications (1)

Publication Number Publication Date
DE742233C true DE742233C (en) 1944-10-28

Family

ID=7028305

Family Applications (1)

Application Number Title Priority Date Filing Date
DEC56343D Expired DE742233C (en) 1941-02-28 1941-02-28 Sodium bicarbonate dry fire extinguisher

Country Status (1)

Country Link
DE (1) DE742233C (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US625293A (en) * 1899-05-16 Fire-extinguishing compound
GB190100738A (en) * 1901-01-11 1901-06-15 Richard Hoult Improvements in and connected with Fire Extinguishing Substances.
FR378286A (en) * 1907-05-31 1907-09-28 Mario Gasca Di Cesare Flame retardant powder
GB190921168A (en) * 1909-09-16 1910-09-15 Luke Henry Woods A Fire Extinguishing Powder.
FR801208A (en) * 1935-04-30 1936-07-30 Expl Des Procedes Et Brevets F General purpose fire extinguisher
DE659054C (en) * 1936-03-20 1938-04-25 Minimax Akt Ges Production of a highly free-flowing, non-clumping sodium bicarbonate as an extinguishing powder

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US625293A (en) * 1899-05-16 Fire-extinguishing compound
GB190100738A (en) * 1901-01-11 1901-06-15 Richard Hoult Improvements in and connected with Fire Extinguishing Substances.
FR378286A (en) * 1907-05-31 1907-09-28 Mario Gasca Di Cesare Flame retardant powder
GB190921168A (en) * 1909-09-16 1910-09-15 Luke Henry Woods A Fire Extinguishing Powder.
FR801208A (en) * 1935-04-30 1936-07-30 Expl Des Procedes Et Brevets F General purpose fire extinguisher
DE659054C (en) * 1936-03-20 1938-04-25 Minimax Akt Ges Production of a highly free-flowing, non-clumping sodium bicarbonate as an extinguishing powder

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