FR2404612A1 - PROCESS FOR ELIMINATION IN A HYDROALCOHOLIC LIQUID MEDIUM OF THE SOLVENTS CONTAINED IN THE PROPULSIVE POWDERS IN GRAINS - Google Patents

PROCESS FOR ELIMINATION IN A HYDROALCOHOLIC LIQUID MEDIUM OF THE SOLVENTS CONTAINED IN THE PROPULSIVE POWDERS IN GRAINS

Info

Publication number
FR2404612A1
FR2404612A1 FR7729683A FR7729683A FR2404612A1 FR 2404612 A1 FR2404612 A1 FR 2404612A1 FR 7729683 A FR7729683 A FR 7729683A FR 7729683 A FR7729683 A FR 7729683A FR 2404612 A1 FR2404612 A1 FR 2404612A1
Authority
FR
France
Prior art keywords
hydroalcoholic
grains
propulsive
elimination
powders
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.)
Granted
Application number
FR7729683A
Other languages
French (fr)
Other versions
FR2404612B1 (en
Inventor
Louis Leneveu
Paul Seite
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.)
Societe Nationale des Poudres et Explosifs
Original Assignee
Societe Nationale des Poudres et Explosifs
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 Societe Nationale des Poudres et Explosifs filed Critical Societe Nationale des Poudres et Explosifs
Priority to FR7729683A priority Critical patent/FR2404612A1/en
Priority to EP78400114A priority patent/EP0001526B1/en
Priority to DE7878400114T priority patent/DE2860662D1/en
Priority to IT7869272A priority patent/IT7869272A0/en
Publication of FR2404612A1 publication Critical patent/FR2404612A1/en
Application granted granted Critical
Publication of FR2404612B1 publication Critical patent/FR2404612B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
    • C06B21/0091—Elimination of undesirable or temporary components of an intermediate or finished product, e.g. making porous or low density products, purifying, stabilising, drying; Deactivating; Reclaiming

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

La présente invention concerne un procédé d'élimination des solvants contenus dans les poudres propulsives en grains fabriquées selon le procédé dit <<avec solvant>>, lorsque lesdits solvants sont constitués par un mélange éther-alcool. Selon l'invention les grains de poudre sont immergés dans une phase liquide hydroalcoolique dans laquelle circule un gaz, ladite phase hydroalcoolique étant constituée par une dilution aqueuse de l'alcanol utilisé comme solvant de ladite poudre dans des proportions telles que ladite phase liquide hydroalcoolique titre entre 20 et 70 degrés Gay-Lussac, la température de ladite phase hydroalcoolique étant comprise entre 10 et 40 degrés C. Le procédé selon l'invention a pour conséquence directe une réduction de la durée du trempage ultérieur et pour conséquence indirecte un gain de la stabilité chimique du grain de poudre.The present invention relates to a process for removing the solvents contained in the granular propellant powders produced according to the so-called "solvent" process, when said solvents consist of an ether-alcohol mixture. According to the invention, the powder grains are immersed in a hydroalcoholic liquid phase in which a gas circulates, said hydroalcoholic phase being constituted by an aqueous dilution of the alkanol used as solvent for said powder in proportions such as said aqueous alcoholic liquid phase. between 20 and 70 degrees Gay-Lussac, the temperature of said hydroalcoholic phase being between 10 and 40 degrees C. The process according to the invention has the direct consequence of a reduction in the duration of the subsequent soaking and, as an indirect consequence, a gain in chemical stability of the powder grain.

FR7729683A 1977-10-03 1977-10-03 PROCESS FOR ELIMINATION IN A HYDROALCOHOLIC LIQUID MEDIUM OF THE SOLVENTS CONTAINED IN THE PROPULSIVE POWDERS IN GRAINS Granted FR2404612A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR7729683A FR2404612A1 (en) 1977-10-03 1977-10-03 PROCESS FOR ELIMINATION IN A HYDROALCOHOLIC LIQUID MEDIUM OF THE SOLVENTS CONTAINED IN THE PROPULSIVE POWDERS IN GRAINS
EP78400114A EP0001526B1 (en) 1977-10-03 1978-09-26 Process for the removal in a liquid water/alcohol medium of solvents present in granular powder propellants
DE7878400114T DE2860662D1 (en) 1977-10-03 1978-09-26 Process for the removal in a liquid water/alcohol medium of solvents present in granular powder propellants
IT7869272A IT7869272A0 (en) 1977-10-03 1978-10-02 PROCEDURE FOR THE ELIMINATION IN A HYDROALCOHOLIC LIQUID MEDIUM OF THE SOLVENTS CONTAINED IN THE PROPELLANT POWDERS IN GRANULES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7729683A FR2404612A1 (en) 1977-10-03 1977-10-03 PROCESS FOR ELIMINATION IN A HYDROALCOHOLIC LIQUID MEDIUM OF THE SOLVENTS CONTAINED IN THE PROPULSIVE POWDERS IN GRAINS

Publications (2)

Publication Number Publication Date
FR2404612A1 true FR2404612A1 (en) 1979-04-27
FR2404612B1 FR2404612B1 (en) 1980-02-08

Family

ID=9196037

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7729683A Granted FR2404612A1 (en) 1977-10-03 1977-10-03 PROCESS FOR ELIMINATION IN A HYDROALCOHOLIC LIQUID MEDIUM OF THE SOLVENTS CONTAINED IN THE PROPULSIVE POWDERS IN GRAINS

Country Status (4)

Country Link
EP (1) EP0001526B1 (en)
DE (1) DE2860662D1 (en)
FR (1) FR2404612A1 (en)
IT (1) IT7869272A0 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2704640B1 (en) * 1993-04-26 1995-06-09 Snpe Ingenierie Sa METHOD AND INSTALLATION FOR DESTRUCTION OF AMMUNITION CONTAINING TOXIC AGENTS.
FR2704641B1 (en) * 1993-04-27 1995-08-11 Neyrpic Framatome Mecanique AUTOMATIC PROCESS AND INSTALLATION FOR THE NEUTRALIZATION OF CHEMICAL AMMUNITION.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3622655A (en) * 1969-04-14 1971-11-23 Hercules Inc Aqueous slurry process for drying of solvent wet double base smokeless powder
FR2244731A1 (en) * 1973-09-20 1975-04-18 Bofors Ab

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2691800A (en) * 1951-02-10 1954-10-19 Olin Ind Inc Method of recovering explosives in particular form
FR1185754A (en) * 1957-11-05 1959-08-05 Le Secretaire D Etat A La Defe Process for removing and recovering solvents used in the manufacture of powders or other industrial products

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3622655A (en) * 1969-04-14 1971-11-23 Hercules Inc Aqueous slurry process for drying of solvent wet double base smokeless powder
FR2244731A1 (en) * 1973-09-20 1975-04-18 Bofors Ab

Also Published As

Publication number Publication date
FR2404612B1 (en) 1980-02-08
EP0001526B1 (en) 1981-04-29
EP0001526A1 (en) 1979-04-18
IT7869272A0 (en) 1978-10-02
DE2860662D1 (en) 1981-08-06

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