Blast treatment method

Patent metadata

Field	Value
Publication number	US-9879962-B2
Application number	US-201515303664-A
Country	US
Kind code	B2
Filing date	Apr 7, 2015
Priority date	May 28, 2014
Publication date	Jan 30, 2018
Grant date	Jan 30, 2018

Abstract

A blast treatment method whereby a smoke grenade is blast treated inside an explosion-proof container, said method comprising: a blast step in which the smoke grenade ( 20 ) is exploded inside the explosion-proof container ( 10 ); and a dissolving step in which gas or micro particles generated when the smoke grenade ( 20 ) was exploded are dissolved inside the explosion-proof container ( 10 ), in a liquid (W) including a greater volume of water than the volume of water generated by the explosion of the smoke grenade ( 20 ).

First claim

The invention claimed is:

1. A blast treatment method for carrying out blast treatment of a smoke projectile that emits smoke at a time of a blast in a blast-proof container, which comprises:
a liquid placement step to place the liquid, which comprises the water, in the blast-proof container,
a blast step to blast the smoke projectile in the blast-proof container,
a dissolution step to dissolve, in the blast-proof container, a gas and fine particles, which are produced when the smoke projectile is blasted, into a liquid that comprises water in an amount larger than an amount of water produced due to the blast of the smoke projectile
wherein:
in the blast step, the smoke projectile is blasted and the water is vaporized and
in the dissolution step, the gas and fine particles are dissolved into water produced through condensation of water vapor when the water vapor produced in the blast step condenses as temperature lowers.

2. The blast treatment method according to claim 1 , wherein:
the gas and fine particles are dissolved into the liquid in an amount capable of dissolving of the gas and fine particles in an entirety thereof in the dissolution step.

3. The blast treatment method according to claim 1 , wherein:
in the blast step, a white phosphorus smoke projectile or a red phosphorus smoke projectile is blasted as the smoke projectile; and
the blast step is carried out in a state that in the blast-proof container, oxygen exists in an amount capable of oxidizing whole phosphorus contained in the white phosphorus smoke projectile or the red phosphorus smoke projectile.

4. The blast treatment method according to claim 3 , wherein:
in the liquid placement step, the liquid is placed at a position spaced apart from the white phosphorus smoke projectile or the red phosphorus smoke projectile within the blast-proof container.

5. The blast treatment method according to claim 1 , wherein:
in the blast step, a hexachloroethane smoke projectile is blasted as the smoke projectile in the liquid.

6. The blast treatment method according to claim 5 , wherein:
the blast step is carried out with oxygen existing in the blast-proof container.

7. The blast treatment method according to claim 1 , wherein:
in the dissolution step, the gas or the fine particles are dissolved into an aqueous solution as the liquid, the aqueous solution comprising the water and an alkaline agent dissolved in the water.

Assignees

• Kobe Steel Ltd

Inventors

• Ueda Masaya

Classifications

• F42D5/04

  Rendering explosive charges harmless, e.g. destroying ammunition ({F42B39/14 and F42B39/20 take precedence } ; extracting primers, dismantling ammunition F42B33/04, F42B33/06 {; chemical deactivating of explosives C06B21/0091}); Rendering detonation of explosive charges harmless · CPC title

• F42B33/06 Primary

  Dismantling fuzes, cartridges, projectiles, missiles, rockets or bombs ({F42B33/004 and} F42B33/04 take precedence; {elimination of undesirable components of explosives C06B21/0091}) · CPC title