JP3354720B2 - Method and apparatus for treating explosives and explosives - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for treating explosives and explosives, and more particularly, to a method for removing explosives and explosives from a can body, a method for performing a burning treatment after removing explosives, and a method for removing explosives. The present invention relates to an apparatus for performing a combustion treatment from wastewater.

[0002]

2. Description of the Related Art Conventionally, cans filled with explosives and explosives were crushed as they were, and explosives and explosives were separated from the can body members. In such a conventional method, the TNT powder and the like cannot be completely extracted from the can body, and the treatment of the TNT powder remaining in the can body is troublesome.

In addition, explosives and explosives (including the above-discharged ones, hereinafter simply referred to as explosives), which are no longer required, are treated by a combustion / explosion method in which small amounts are burned and exploded. However, workers were constantly at risk, and there were also problems with noise and vibration. Therefore, as a safer treatment method, a supercritical water oxidation method that oxidatively decomposes in supercritical water, a hydrolysis method in an alkaline solution, and the like have been proposed. It is necessary to raise the temperature more than that, and there is a problem that the temperature becomes higher than the self-decomposition temperature of explosives and there is a risk of explosion.

[0004]

DISCLOSURE OF THE INVENTION In view of the above-mentioned state of the art, the present invention aims to provide a method for completely expelling explosives from a can body, and a method and an apparatus for completely expelling explosives and safely burning. Things.

[0005]

The present invention SUMMARY OF] is provided in (1) can body explosives, from the filling opening of the explosives, Ri temperature der of 200 ° C. or less, to powder, the explosives melting
A method for treating explosives and explosives, which comprises ejecting explosives and explosives inside a can by ejecting hot water, steam or gas at a temperature outside the can (hereinafter referred to as a first invention). (2) After the fuze is removed from the can body filled with explosives and explosives, the can body filled with explosives and explosives is charged and immersed in a melting medium, and the can body is shaken to shake the can body. A method for treating explosives and explosives, which comprises dispersing an explosive and explosives uniformly in a large amount of a melting medium, injecting the explosives and explosives from a burner into a combustion furnace for combustion (hereinafter, referred to as a second invention). (3) A facility for taking out explosives and explosives from a small can body having an opening filled with explosives and explosives and burning the explosives,
Explosives and explosives from cans consisting of a wall thickness measuring device that measures the thickness of each part of the can body, and an incision device that cuts only the can body wall and cuts the can body into one or more in accordance with these measured values Crusher for crushing explosives and explosives while maintaining the temperature below the temperature at which solids are maintained.A device for burning crushed explosives and explosives. The inlets for primary air, pulverized explosives, explosives, and secondary air are arranged concentrically, a buffer container large enough to absorb small fluctuations in pressure is provided, and the pressure inside the device is equal to or higher than a predetermined value. The system has a gas opening device that releases gas inside the device to the atmosphere to maintain the pressure inside the device below a certain value.A cooling pipe group that cools the gas temperature near the center of the device, and an ammonia injector at the bottom Combustion device with NOx reduction reaction chamber Combustion Explosive, characterized by comprising sequentially from provided cooling apparatus and the dust collector on the downstream of the location processing facilities of explosives (hereinafter, referred to as third invention). It is.

[0006]

First, explosives are generally insoluble in water. For example, TNT (trinitrotoluene) is almost insoluble in water at room temperature. However, TNT has a melting point of 8
Because it is relatively low at 0.8 ° C, it is
When hot water, steam or gas (air, inert gas) at a temperature at which explosives and explosives melt is sprayed, TNT is dispersed and extracted from the crystal surface into the melt or gas, and the filled TNT is removed from the can body. And can be collected outside. The recovered explosives are decomposed by post-processing such as combustion.

Second invention: A lid in which explosives are loaded in a melting medium in which explosives are melted (for example, light oil at normal temperature, heavy C oil at 100 ° C. or less, coal-based creosote oil at normal temperature, molten asphalt, etc.). The explosives begin to melt slowly with the heating from the surrounding molten medium by immersing the can body with the open.

By shaking the container of the melting medium,
Since the molten explosives flow into the surrounding molten medium, they are uniformly mixed with an agitator or the like. By continuously performing this process, the explosive or the like in the container is easily melted and uniformly mixed in the melting medium. The large amount of molten liquid can safely remove explosives and the like from the container in order to reduce unexpected external impact.

Further, since it is liquid, it can be easily pumped by existing pumps and the like, and when it is sent to existing liquid fuel injection burners and combustion furnaces, a small amount of explosives in a large amount of molten medium is burned. As a result, the calorific value of the explosives is very small and the combustion reaction of the molten medium is completely decomposed and decomposed, so that the explosives and the like can be treated safely and easily as in the normal liquid fuel combustion.

On the other hand, cyanide compounds which may be generated when burning explosives or the like can be released to the atmosphere as non-polluting gas by an existing anti-pollution combustion method or a chemical solution absorption tower, and are mixed in explosives. Unburned components such as Al can be collected by a dust collector such as a scrubber.

As a result, since explosives are always kept in an environment such as a molten medium as a buffer, the danger of explosion is completely eliminated, and it can be easily handled as an existing liquid fuel, and the existing liquid fuel can be easily handled. Since fuel combustion technology can be used, unpopular places and vast spaces are not required, and initial explosive disposal and running costs can be reduced. In addition, at the time of the above-mentioned combustion, it is also effective to separately assist combustion with another fuel such as heavy oil gas.

Third invention: This equipment is a take-out device for safely taking out explosives from the filling can body, a device for safely pulverizing the taken-out explosives to a size that can be transported to a combustion device, in a safe state. It comprises a combustion device provided with means for burning crushed explosives and removing harmful gas generated, a cooling device for cooling the combustion gas, and a dust collecting device. The configuration and operation of this equipment will be described in detail with reference to the following embodiment.

[0013]

EXAMPLES Hereinafter, specific examples of the present invention will be described to clarify the effects of the present invention.

(Embodiment 1) An embodiment of the first invention will be described with reference to FIG. In FIG. 1, 101 is a can body, 102
Represents explosives, 103 represents an opening for filling explosives 102 into the can body 101, 104 represents a recovery tank, 105 represents a pipe for jetting hot water, steam or gas at a temperature of 200 ° C. or lower, 106 represents a recovered material (explosives), 107 is a pump. Injection pipe 105
The hot water of 100 ° C. injected into the filling opening 103 from the explosives completely removes the explosives filled in the can body 101 as a recovered material 106 outside the can body 101 and remains in the can body 101. Absent. Therefore, it is not necessary to separately treat explosives adhering to the inside of the can body 101. Thereafter, the recovered material 106 is separately transported to a combustion device by the pump 107 for processing.

(Embodiment 2) An embodiment of the second invention will be described with reference to FIGS. FIG. 2 is a cross-sectional view of a casing loaded with explosives, and FIG. 3 is an explanatory diagram of a method of treating explosives taken out of the casing of FIG. In FIG. 2, a can body 213 loaded with explosives 212 and the like is attached to a tip end of a casing 211, and an inlet 214 a and a lid 214 b of the explosive 212 are attached to the can body 213, which is sealed, and A fuse 215 as a detonating device is provided. In FIG. 3, a tank 222 containing asphalt 221 as a solvent and a buffer is provided with a heater 223 for keeping the asphalt in a molten state and at a constant temperature, and an agitator 224 for promoting mixing. Explosives 21 with fuze 215 and lid 214b removed from FIG.
The can body 213 loaded with No. 2 is moved and transported by a crane or the like (not shown) and inserted and immersed in the asphalt 221.

The surrounding asphalt 2 is passed through a can body 213.
Since the explosives 212 in the can 213 are melted by heating from the can 21, the can 213 is rotated by a swinging device (not shown).
The molten gunpowder flows out of the opening 215a into which the injection port 214a or the fuze 215 has been inserted by being swung, and is uniformly mixed with the surrounding asphalt. All of the materials 212 are melted and the asphalt 2 outside the can 213 is melted.
It is assumed that the can 213 is lifted up at the time of being mixed into the can 21 and the inside of the can 213 is emptied to be able to dispose of the iron material.

A liquid mixture of a large amount of asphalt 221 and a small amount of explosives 212 mixed in a molten state and uniformly mixed is sucked and pumped by a pump 224, atomized and injected by an injection burner (not shown), and Simultaneous combustion at. In this case, additional fuel such as heavy oil or gas may be assisted. The unburned components such as Al mixed in the explosives 212 after combustion are collected by a dust collector 22 such as a scrubber.
The exhaust gas is collected at 6 and discharged out of the system, and the combustion exhaust gas is removed by a chemical absorption tower or the like (not shown) to remove harmful gases, heat recovered, and released to the atmosphere.

(Embodiment 3) An embodiment of the third invention will be described with reference to FIGS. FIG. 4 shows an overall view of the equipment of this embodiment, and FIG. 5 shows a crushing device for explosives taken out. In FIG. 4, a can 2 filled with explosives 1 is attached to a rotating tool 3,
While rotating at a low speed, the thickness of each part of the can 2 is measured by, for example, the ultrasonic flaw detector 4, and the thickness of each part is stored. Here, 5 is a thickness reading unit, and 6 is a thickness data bank. When the can body 2 whose thickness has been measured is cut in a round slice using the cutting blade 8 that rotates at a high speed, the tip of the cutting blade 8 is the meat of the can body 2 previously measured. The thickness is compared with the blade position measured by the laser beam from the cutting blade position sensor 7, the position of the cutting blade position driver 11 driven by a signal from the data processing unit 10 is set, The rotating cutting blade 8 operates to cut only the thickness of the can body 2. At this time, a low-temperature gas or liquid is blown from the coolant nozzle 12 to the incision so that the temperature of the incision does not exceed 200 ° C. The incision of the can body 2 may be divided into a plurality of sections as needed. In this manner, the can body 2 is cut in a ring and the explosives 1 as the content are taken out as a single body. The above is the device for cutting out explosives 1 from the can 2 of the third invention facility.

Next, the explosives 1 taken out are crushed by the crushing means 13.
Is divided into 50 mm or less. An enlarged view of an example of the crushing means 13 is shown in FIG. In FIG.
Reference numeral 13a denotes a thin blade having a built-in heater 13b. The thin explosives 1 are divided by the thin blades 13a into a size of 50 mm or less. The divided explosives 1 are crushed by a crusher 14 to 3 mm or less. The pulverizer 14 is supplied with, for example, a cooling gas obtained by evaporating liquid air in a liquid air container 17 by an evaporator 18, and the explosives 1 are pulverized by a pulverizing power instruction unit 16 and a pulverizing power controller 15. The above is the grinding device of the third invention facility.

The pulverized explosives are transported by gas and supplied to a combustion device 23 via a pipe 19 to be burned. In the upper part of the combustion device 23, the auxiliary fuel inlet 20, in order from the center,
The primary air inlet 21, the pulverized explosive inflow port 22, and the secondary air inflow port are arranged concentrically, and pulverized explosives are supplied to the combustion device 23 from the pulverized explosives inlet 22. The combustion device 23 is provided with a buffer container 24 so as to absorb small fluctuations in pressure in the device. Further, the combustion device 23 is provided with an open valve 2 by an in-device pressure sensor 25.
6 is attached is open duct 27 a for opening and closing a and a device in the gas when it is more than the value apparatus pressure is predetermined so can release into the atmosphere. Cooling tube group 27 b for even more devices central portion of the combustion apparatus 23 for cooling the combustion gas
It is provided, that the bottom of the cooling tube bundle 27 and the ammonia injector 28 and the NOx reduction reactor 29 is provided with heat recovery is carried out in the cooling tube group 27 b, with ammonia to NOx in the combustion gas The gas temperature is optimized for the NOx reduction reaction. The above is the combustion device of the third invention. In this combustion device 23, the cooling pipe group 23, the ammonia injector 28, the NOx reduction reactor 2
9 is installed in the apparatus, but this is to make the apparatus compact, and it is within the scope of design change that these apparatuses can be separately provided outside the combustion apparatus 23.

The exhaust gas from the combustion device 23 is supplied to a cooler 31 via a pipe 30. The cooler 31 has a heat transfer tube 33 in communication with the air pipe 32 inside, and the heat transfer tube 3
A dust remover 34 for removing dust adhering to 3 is provided. A dust collector 35 such as a bag filter is provided downstream of the cooler 31. Exhaust gas is collected here, and then discharged to the atmosphere from a chimney 37 via a suction blower 36. The above is the cooling device and the dust collecting device of the third invention.

[0022]

According to the present invention, explosives can be safely and completely taken out of a can, and the taken-out explosives can be safely burned.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of a processing object according to a second embodiment of the present invention.

FIG. 3 is an explanatory diagram of a second embodiment of the present invention.

FIG. 4 is an explanatory view of Embodiment 3 of the present invention.

FIG. 5 is a partially enlarged explanatory view of one step in FIG. 4;

──────────────────────────────────────────────────続 き Continuing on the front page (72) Nobuaki Murakami, Inventor 5-717-1 Fukahori-cho, Nagasaki-city, Nagasaki Prefecture Mitsubishi Heavy Industries, Ltd.Nagasaki Research Laboratory (72) Inventor Masakazu Tateishi 5-717, Fukahori-cho, Nagasaki-city, Nagasaki Prefecture No. 1 Inside Nagasaki Research Laboratory of Mitsubishi Heavy Industries, Ltd. (72) Inventor Tetsuo Yuhara 5-717-1 Fukahori-cho, Nagasaki City, Nagasaki Prefecture Mitsubishi Heavy Industries, Ltd. Nagasaki Research Laboratory (56) References JP-A-6-323794 (JP, A JP-A-7-253300 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) F42B 33/00-33/14

Claims (3)

(57) [Claims] 1. A powder provided in a can body, from the filling opening of the explosives, Ri temperature der of 200 ° C. or less, gunpowder, the temperature of explosives is melted hot water, by injecting steam or gas cans A method for treating explosives and explosives, which comprises taking out explosives and explosives in the body outside the can. 2. After removing a fuse from a canister filled with explosives and explosives, a canister filled with explosives and explosives is charged and immersed in a melting medium, and the can body is rocked by shaking the can body. A method for treating explosives and explosives, comprising uniformly dispersing the explosives and explosives therein in a large amount of a melting medium and injecting the same into a combustion furnace from a burner for burning. 3. A facility for taking out explosives and explosives from a small can body having an opening filled with explosives and explosives and burning the same, comprising: a thickness measuring device for measuring the thickness of each part of the can body; A device for removing explosives and explosives from a can body consisting of an incision device that cuts only the can body wall into one or more cans according to the measured values of the explosives and explosives that are kept solid A crushing device that crushes while maintaining the temperature below the temperature. This is a device that burns crushed explosives and explosives. At the top, the inlets of auxiliary fuel, primary air, crushed explosives, explosives, and secondary air are concentric. A buffer vessel large enough to absorb small fluctuations in pressure is attached, and when the internal pressure of the equipment exceeds a predetermined value, the internal gas is released to the atmosphere to maintain the internal pressure at a constant value. Equipped with a gas release device inside the device to maintain below Combustion device comprising a group of cooling pipes for cooling the gas temperature and an ammonia injector and a NOx reduction reaction chamber below the cooling tube group. The cooling device and the dust collection device are sequentially provided downstream of the combustion device. Equipment for processing explosives and explosives.