CN111578803A - TNT explosive spray destroying method - Google Patents
TNT explosive spray destroying method Download PDFInfo
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- CN111578803A CN111578803A CN202010454721.5A CN202010454721A CN111578803A CN 111578803 A CN111578803 A CN 111578803A CN 202010454721 A CN202010454721 A CN 202010454721A CN 111578803 A CN111578803 A CN 111578803A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D5/00—Safety arrangements
- F42D5/04—Rendering explosive charges harmless, e.g. destroying ammunition; Rendering detonation of explosive charges harmless
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J6/00—Heat treatments such as Calcining; Fusing ; Pyrolysis
- B01J6/005—Fusing
Abstract
The invention discloses a TNT explosive spray destroying method, which belongs to the technical field of ammunition destroying, wherein a TNT destroying system is used for destroying TNT, a steam melting device, an atomization ignition device, a material conveying device and a safety protection device in the TNT destroying system are controlled by a controller, the steam melting device comprises a melting reaction kettle and a low-pressure water vapor generator communicated with the melting reaction kettle, a grid is arranged in the melting reaction kettle, and the melting reaction kettle is connected with the material conveying device; heating and melting the solid TNT in the reaction kettle by using low-pressure steam, conveying the liquid TNT to an atomization ignition device through a material conveying device, atomizing the liquid TNT into superfine droplets, and then performing discharge ignition to realize safe, efficient and sufficient combustion of the TNT; the controller is used for realizing man-machine isolation remote control in the processing process, so that the automation degree is improved, and the safety factor of the processing process is improved by means of the safety protection device. The invention can realize safe and efficient destruction of the waste TNT and standard emission of waste gas, and has safe and reliable treatment process and environmental protection.
Description
Technical Field
The invention belongs to the technical field of ammunition destruction, and particularly relates to a TNT explosive spray destruction method.
Background
The TNT is a colorless or light yellow crystal, is a strong explosive, has high chroma, high toxicity and difficult biochemical degradation, and can generate great harm to ecological environment, soil watershed and human health. The quantity of TNT recovered during the destruction treatment of discarded ammunition by troops for civil use is small, so that a large amount of stock overstock is caused, and great danger exists. If improper TNT treatment pollutes surface water and groundwater, subsequent cleaning is difficult and expensive.
At present, TNT is mainly used to produce products such as paint, cosmetics and the like by a chemical method abroad, and the method has complex process, high equipment cost and inconvenient popularization; the domestic treatment is mainly carried out by adopting a field incineration method, but the defect of environmental pollution caused by insufficient combustion exists.
Disclosure of Invention
The invention aims to provide a TNT explosive spray destruction method, and aims to solve the technical problems of high treatment cost and serious environmental pollution in TNT treatment in the prior art.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a TNT explosive spray destruction method is characterized in that a TNT destruction system is used for burning TNT, the TNT destruction system comprises a steam melting device, an atomization ignition device, a material conveying device and a safety protection device, and the steam melting device, the atomization ignition device, the material conveying device and the safety protection device are all connected with a controller; the TNT destroying system adopts human-computer isolation remote control of a controller, solid TNT is heated through low-pressure steam, after the solid TNT is melted into liquid, the liquid TNT is atomized into superfine droplets by utilizing high-speed flowing air generated in the material conveying device, high-voltage discharge ignition in the atomization ignition device is utilized, and the TNT droplets are combusted to destroy the discarded TNT;
the steam melting device comprises a melting reaction kettle and a low-pressure steam generator, the low-pressure steam generator is communicated with the melting reaction kettle through a steam pipe, a grid is arranged inside the melting reaction kettle, and the bottom of the melting reaction kettle is connected with a pushing box of the material conveying device; and the low-pressure water vapor generator generates low-pressure water vapor to heat and melt the solid TNT in the reaction kettle.
Preferably, the material conveying device comprises a pushing box, a feeding pipeline and an air compressor, the pushing box comprises a box body and a pushing plate driven by a power mechanism, the pushing plate is arranged in the box body, and the periphery of the pushing plate is in sliding fit with the inner wall of the box body and moves along the length direction of the box body; the middle part of the box body is communicated with an outlet of the quantitative settler, an outlet of the pushing box is connected with a feeding transfer station of the safety protection device through a feeding pipeline, and two ends of the feeding pipeline are respectively provided with a third one-way electromagnetic valve and a fourth one-way electromagnetic valve; the air compressor is connected with the feeding pipeline through a compressed air pipe, a fifth one-way electromagnetic valve is arranged at the outlet of the compressed air pipe, and the fifth one-way electromagnetic valve is arranged between the third one-way electromagnetic valve and the fourth one-way electromagnetic valve; the feeding transfer station is connected with the atomization ignition device through a discharge pipeline, and a sixth one-way electromagnetic valve is arranged on the discharge pipeline.
Preferably, the power mechanism comprises a hydraulic pump and a hydraulic pusher, the hydraulic pusher comprises a hydraulic cylinder and a piston rod which are connected with the hydraulic pump, the tail end of the piston rod is connected with a push plate in the pushing box, and the hydraulic pump drives the piston rod of the hydraulic pusher to stretch.
Preferably, the outer walls of the pushing box, the feeding pipeline and the feeding transfer station are wrapped by heat insulation layers, a steam pipe is communicated with the heat insulation layers, and the steam pipe is communicated with the low-pressure water steam generator.
Preferably, the bottom of the feeding transfer station is conical, and an outlet at the bottom of the feeding transfer station is connected with the atomization ignition device through a discharge pipeline.
Preferably, the atomization ignition device comprises an atomization nozzle, a high-pressure igniter and a flame detector, the high-pressure igniter comprises a trigger power supply and an ignition electrode, a gas-liquid mixing cavity is arranged inside the atomization nozzle, the gas-liquid mixing cavity is communicated with a discharge pipeline and a compressed air pipe, and the compressed air pipe is connected with an air compression pump; the flame detector is arranged on the outlet side of the atomizing nozzle and used for detecting TNT combustion flame.
Preferably, a TNT feed hole connected with the discharge pipeline and a plurality of air holes connected with the compressed air pipe are embedded in the body part of the atomizing nozzle, the inlet end of the body part is cylindrical, the outlet end of the body part is conical, the TNT feed hole penetrates through the middle of the body part, the four air holes are radially arranged around the TNT feed hole, and the four air holes are obliquely communicated with the TNT feed hole at the inlet of the gas-liquid mixing cavity.
Preferably, the number of the air holes is four, the cross section of the air holes is triangular, the four air holes are uniformly distributed around the TNT feeding hole and used for forming spirally rotating air flow, negative pressure is formed at a liquid inlet channel of the gas-liquid mixing cavity, and liquid TNT is sucked into the gas-liquid mixing cavity.
Preferably, the safety protection device comprises a combustion temperature detector and a pressure monitor, third to sixth one-way solenoid valves, a feeding transfer station and an explosion-proof wall, wherein the combustion temperature detector and the pressure monitor are respectively arranged at the outlet side and inside the atomizing nozzle; the third one-way electromagnetic valve to the sixth one-way electromagnetic valve are used for preventing the TNT liquid from flowing backwards; the feeding pipeline penetrates through the explosion-proof wall and is used for isolating the feeding transfer station from the pushing box and the melting reaction kettle.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: compared with the prior art, the invention realizes man-machine isolation remote control through the controller, the steam melting device heats and melts the solid TNT in the reaction kettle by using low-pressure water steam to melt the TNT into liquid, and then the TNT is conveyed to the atomization ignition device by using the material conveying device to atomize the TNT into superfine droplets and then discharge and ignite, thereby realizing safe and efficient sufficient combustion of the TNT and standard emission of waste gas. According to the invention, the safety performance is improved through the safety protection device in the TNT treatment process, and the purposes of safety, high efficiency, green and environmental protection of the burning of the scrapped TNT are ensured.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of a TNT destruction system according to an embodiment of the present invention;
FIG. 2 is a schematic process flow diagram of the present invention;
FIG. 3 is a schematic view of the structure of a steam melting apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a material conveying device according to an embodiment of the present invention;
FIG. 5 is a layout area diagram of the layout of the steam cycle heat preservation part in the embodiment of the invention;
FIG. 6 is a schematic view of an atomizing nozzle in an embodiment of the present invention;
FIG. 7 is a sectional view taken along line A-A of FIG. 6;
FIG. 8 is a schematic circuit diagram of a high voltage igniter in accordance with an embodiment of the invention;
FIG. 9 is a flow chart of the operation of a high pressure igniter in accordance with an embodiment of the invention;
FIG. 10 is a functional schematic of the present invention;
in the figure: 1-a quantitative settler; 2-a first one-way solenoid valve; 3-a second one-way solenoid valve;
100-a steam melting device, 110-a melting reaction kettle, 111-a grid, 120-a low-pressure steam generator and 121-a steam pipe;
200-material conveying device, 210-pushing box, 211-box body, 212-push plate, 213-hydraulic pump, 214-hydraulic cylinder; 220-feed line, 230-air compressor, 231-compressed air pipe;
300-an atomization ignition device, 310-an atomization nozzle, 311-a gas-liquid mixing cavity, 312-a TNT feeding hole, 313-an air hole and 320-a high-pressure igniter;
400-a safety protection device, 410-a feeding transfer station, 411-a third one-way electromagnetic valve, 412-a fourth one-way electromagnetic valve, 413-a fifth one-way electromagnetic valve, 414-a sixth one-way electromagnetic valve, 415-an explosion-proof wall and 416-a discharge pipeline;
500-steam cycle heat preservation.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
According to the TNT explosive spray destruction method provided by the embodiment of the invention, as shown in FIGS. 1-3, a TNT destruction system is used for burning TNT, the TNT destruction system comprises a steam melting device 100, a material conveying device 200, an atomization ignition device 300 and a safety protection device 400, and the steam melting device 100, the material conveying device 200, the atomization ignition device 300 and the safety protection device 400 are all connected with a controller; the TNT destroying system adopts human-computer isolation remote control of a controller, solid TNT is heated through low-pressure steam, after the solid TNT is melted into liquid, the liquid TNT is atomized into superfine droplets by utilizing high-speed flowing air generated in the material conveying device, high-voltage discharge ignition in the atomization ignition device is utilized, and the TNT droplets are combusted to realize the destroy of the scrapped TNT.
The steam melting device 100 comprises a melting reaction kettle 110 and a low-pressure water steam generator 120, wherein the low-pressure water steam generator 120 is communicated with the melting reaction kettle 110 through a water steam pipe 121, a grid 111 is arranged inside the melting reaction kettle 110, and the bottom of the melting reaction kettle 110 is connected with a pushing box 210 of a material conveying device 200; the low-pressure steam generated by the low-pressure steam generator 120 heats the solid TNT in the melting reaction kettle 110. The top of the melting reaction kettle is provided with a feeding hopper, the inner grating is made of metal, the multiple layers of gratings are arranged in the melting reaction kettle from top to bottom at intervals, and the water steam pipes are communicated with the gaps of the multiple layers of gratings in parallel. When the water vapor generated by the low-pressure water vapor generator passes through the melting reaction kettle, the heat is transferred to the metal grid to melt the solid TNT, and the liquid TNT is collected at the conical bottom of the reaction kettle. The solid TNT can be discontinuously fed up and down by melting with low-pressure water vapor, the efficiency is higher, and the explosion-proof safety requirement is less than that of an oil bath and a water bath.
As a preferable structure, as shown in fig. 1 and 3, a quantitative settler 1 is arranged between the melting reactor 110 and the pushing box 210, and a first one-way solenoid valve 2 and a second one-way solenoid valve 3 connected to a controller are respectively arranged between an inlet of the quantitative settler 1 and an outlet of the melting reactor 110 and between an outlet of the quantitative settler 1 and an inlet of the pushing box 210. The quantitative settler is designed in a cylindrical shape, has a volume of 3L and can contain 5Kg of liquid TNT. After liquid TNT gathers in reation kettle toper bottom, the first one-way solenoid valve at quantitative settler top is opened, and liquid TNT relies on the action of gravity to fill up quantitative settler, and the second one-way solenoid valve of bottom is opened after the first solenoid valve closes, and after the hydraulic pressure propelling movement case of material conveyor is all injected to liquid TNT in the settler to be measured, the second one-way solenoid valve of bottom closed, has realized interrupting the feed.
In an embodiment of the present invention, as shown in fig. 1, the material conveying device 200 includes a push box 210, a feeding pipeline 220 and an air compressor 230, the push box 210 includes a box body 211 and a push plate 212 driven by a power mechanism, the push plate 212 is disposed inside the box body 211, and the periphery of the push plate 212 is in sliding fit with the inner wall of the box body 211 and moves along the length direction of the box body 211; the middle part of the box body 211 is communicated with an outlet of the quantitative settler 1, an outlet of the pushing box 210 is connected with a feeding transfer station 410 of the safety protection device 400 through a feeding pipeline 220, and two ends of the feeding pipeline 220 are respectively provided with a third one-way solenoid valve 411 and a fourth one-way solenoid valve 412; the air compressor 230 is connected with the feeding pipeline 220 through a compressed air pipe 231, a fifth one-way electromagnetic valve 413 is arranged at the outlet of the compressed air pipe 231, and the fifth one-way electromagnetic valve 413 is arranged between a third one-way electromagnetic valve 411 and a fourth one-way electromagnetic valve 412; the feeding transfer station 410 is connected with the atomizing ignition device 300 through a discharging pipeline 416, and a sixth one-way electromagnetic valve 414 is arranged on the discharging pipeline 416.
As shown in fig. 4, the power mechanism includes a hydraulic pump 213 and a hydraulic pusher, the hydraulic pusher includes a hydraulic cylinder 214 connected to the hydraulic pump 213, a distal end of a piston rod of the hydraulic cylinder is connected to a push plate 212 in the push box 210, and the hydraulic pump 213 drives the piston rod of the hydraulic pusher to extend and retract. The push pedal is the copper push pedal of 4cm thickness, and the stainless steel is chooseed for use to the material of conveying pipeline and ejection of compact pipeline, and the volume of box is 8L.
The working principle of the material conveying device is as follows:
before hydraulic pressure propelling movement case first effect, third one-way solenoid valve all is in the closed condition to sixth one-way solenoid valve, the copper push pedal is in the propelling movement case leftmost end, liquid TNT fills the propelling movement case after, third one-way solenoid valve and fourth one-way solenoid valve open, hydraulic pump drive copper push pedal is with liquid TNT propelling movement to feed transfer station, treat that the propelling movement finishes, the copper push pedal does not reset, stop at the propelling movement case rightmost end, the hydraulic pump lasts the effect, prevent that the TNT sympathetic detonation wave of feed transfer station from conveying pipeline afferent, play the flame proof effect. And then, the third one-way electromagnetic valve is closed, the fifth one-way electromagnetic valve and the sixth one-way electromagnetic valve are opened, the air compression pump starts to act, and TNT in the pipeline and the feeding transfer station is pushed to an atomizing nozzle of the atomizing ignition device by air pressure to be atomized and combusted. And after the TNT combustion in the pipeline and the transfer station is finished, closing a high-pressure igniter of the atomization ignition device, closing a fifth one-way electromagnetic valve and a sixth one-way electromagnetic valve, opening a third one-way electromagnetic valve and a fourth one-way electromagnetic valve, resetting a copper push plate, filling the push box under the action of a quantitative settler, and repeating the operations.
As shown in fig. 5, the outer walls of the pushing box 210, the feeding pipeline 220 and the feeding transfer station 410 are wrapped with insulating layers, and steam pipes are communicated with the low-pressure water steam generator 120. Wherein, the steam pipe is the stainless steel metal pipe, wraps up and forms one deck metal heat preservation interlayer at propelling movement case, conveying pipeline and feed transfer station surface, and the full line intercommunication links to each other with low pressure steam generator and forms the circulation pipeline, and heat preservation and low pressure steam generator constitute steam cycle heat preservation portion 500. During operation, water vapor is introduced into the heat-insulating layer, so that the liquid TNT is prevented from solidifying in the conveying process.
Further optimizing the technical scheme, the bottom of the feeding transfer station 410 is conical, and the outlet at the bottom of the feeding transfer station 410 is connected with the atomizing ignition device 300 through the discharging pipeline 416. By adopting the structure, once the atomizing nozzle of the atomizing ignition device is subjected to combustion-to-detonation, sympathetic explosion of the feeding transfer station is caused, sympathetic explosion of TNT in the melting reaction kettle is not caused, the explosion range is controlled, and the effect of reducing explosion energy is indirectly exerted; the bottom of the feeding transfer station is designed to be conical, so that TNT liquid can conveniently flow into the atomizing nozzle. In the specific preparation, the volume is designed to be 3L, and 5Kg of liquid TNT can be contained.
In an embodiment of the present invention, as shown in fig. 1 and 6, the atomizing ignition device 300 includes an atomizing nozzle 310, a high-pressure igniter 320 and a flame detector (not shown in the drawings), the high-pressure igniter 320 includes a trigger power supply and an ignition electrode, a gas-liquid mixing cavity 311 is provided inside the atomizing nozzle 310, the gas-liquid mixing cavity 311 is communicated with a discharge pipe 416 and a compressed air pipe, and the compressed air pipe is connected with an air compression pump; the flame detector is disposed at an outlet side of the atomizing nozzle 310 for detecting a TNT combustion flame. As shown in fig. 2 and 10, after the liquid TNT is injected into the feeding transfer station, a certain pressure is formed in the feeding transfer station under the action of the air compression pump, the TNT is pressed into the gas-liquid mixing cavity of the high-pressure atomizing nozzle in an auxiliary manner, and meanwhile, the high-pressure air flows into the air inlet of the high-pressure atomizing nozzle, so that the aim of atomizing the TNT is fulfilled. Simultaneously, the high-pressure igniter is started to ignite the atomized TNT. Before the TNT atomization is started, the high-voltage ignition electrode ignites in advance, so that the TNT sprayed by the atomizing nozzle is ensured to burn immediately, and the accumulation of excessive TNT is prevented; 5 seconds after starting atomizing, the flame detector starts, if TNT burning flame is not detected, the system is forcibly closed, and the system can be restarted only by manual reset, so that the operation is safe and reliable.
In a preferred embodiment of the present invention, as shown in fig. 6 and 7, a TNT feeding hole 312 connected to the discharge pipe 416 and a plurality of air holes 313 connected to the compressed air pipe are embedded in the main body of the atomizing nozzle 310, the inlet end of the main body is cylindrical, the outlet end of the main body is conical, the TNT feeding hole 312 penetrates through the middle of the main body, the number of the air holes 313 is four, and the air holes 313 are radially arranged around the TNT feeding hole 312, and the four air holes 313 are all obliquely communicated with the TNT feeding hole 312 at the inlet of the gas-liquid mixing chamber 311. The number of the air holes 313 is 4, the cross section of each air hole 313 is triangular, the four air holes are uniformly distributed on the periphery of the TNT feeding hole and used for forming spirally rotating air flow, negative pressure is formed at a liquid inlet channel of the gas-liquid mixing cavity 311, and liquid TNT is sucked into the gas-liquid mixing cavity. The atomizing nozzle integrates liquid suction, atomization and spraying, high-speed flowing air forms spirally rotating airflow through 4 obliquely-deformed inlet grooves of the nozzle, negative pressure is formed at a liquid inlet channel of the gas-liquid mixing cavity, and liquid TNT is sucked into the gas-liquid mixing cavity; the liquid TNT is sheared and extruded in the positive direction by the rotating air flow in the gas-liquid mixing cavity in the tangential direction to form fine particles, and the fine particles are coated by an air film to form air bubbles; after leaving the nozzle, because the external pressure of the atomizing nozzle drops suddenly, the air bubbles expand and break to form superfine droplets, and the liquid TNT is atomized into small particles of 30-50 um and ignited.
Further optimizing the technical scheme, as shown in fig. 8 and 9, the high-voltage igniter obtains a direct-current voltage of about 310V by using AC220V commercial power after being rectified and filtered by a full bridge, and then performs chopping inversion on the direct-current voltage by a full bridge IGBT controlled by a driving board to obtain a sequence pulse, the sequence pulse is boosted to 8KV by a primary booster transformer, and a capacitor connected in series with a secondary booster transformer is charged by the rectified and filtered high voltage, when a hydrogen thyristor is triggered to operate, the capacitor forms a discharge loop with the hydrogen thyristor through the primary booster transformer, the primary transformer outputs pulse voltage and current, and the secondary booster transformer obtains 20KV pulse voltage through coupling.
As shown in fig. 1, the safety protection device 400 includes a combustion temperature detector and a pressure monitor, third to sixth one-way solenoid valves 411 to 414, a feeding transfer station 410, and an explosion-proof wall 415, where the combustion temperature detector and the pressure monitor are respectively disposed at an outlet side of the atomizing nozzle 310 and inside the atomizing nozzle; the third one-way solenoid valve 411 to the sixth one-way solenoid valve 414 are used for preventing the TNT liquid from flowing backwards and isolating the conveying channel; the feeding pipe 220 penetrates through the explosion-proof wall 415 and is used for isolating the feeding transfer station 410 from the push box 210 and the melting reaction kettle 110. Wherein, temperature detector and pressure monitor select for use temperature sensor and pressure sensor respectively to carry out on-line monitoring, prevent TNT burning temperature too high and pressure too big under the condition of abnormal work, lead to burning out of control. Meanwhile, a pressure sensor is also arranged on the compressed air pipe and used for monitoring air pressure on line. The feeding transfer station has the advantages that once explosion happens, a large amount of TNT in the melting reaction kettle is not induced to explode, the explosion range is controlled, and the effect of reducing explosion energy is indirectly exerted; the explosion-proof wall blocks detonation waves and protects equipment; the explosion wave that prevents sympathetic explosion hydraulic pressure and cut off the facility and lean on the copper push pedal separation to pass through the pipeline transmission ensures a large amount of TNT safety in the melting reation kettle. Meanwhile, each circuit has overload protection, short-circuit protection and open-phase protection, and is mainly used for protecting the safety of each device and circuit.
Meanwhile, the overload protector and the open-phase protector are arranged in the circuit, so that each circuit has the functions of overload protection, short-circuit protection and open-phase protection, and each device and each circuit are mainly protected from being safe.
The controller in the invention uses PLC as a core control unit to realize automatic or manual control of steam melting, material conveying, atomization ignition, safety protection and other parts of a single cabinet, and has the protection functions of overload, short circuit, phase failure and the like.
In summary, the invention has the following advantages:
(1) the treatment process is advanced, reasonable and reliable, and adopts man-machine isolated remote operation, so that the operation is simple, the management is convenient, the occupied area is small, the investment is saved, and the operating cost is low on the premise of ensuring the safety and the treatment effect;
(2) the safe, efficient and sufficient burning of the TNT is realized, the waste gas is reduced and discharged up to the standard, the environment is protected, the secondary pollution is avoided, and the green treatment and zero pollution are realized;
(3) the controller adopts PLC full-automatic program control and automatic assembly line production, is operated by one key, has high automation degree, full-closed operation, single-machine automatic control, simple and convenient operation, easy maintenance, low energy consumption, low noise and less labor (1-2 people), and reduces the labor complexity and intensity;
(4) high-quality accessories are reasonably selected, energy consumption is reduced, working benefits are improved, and the service life is prolonged;
(5) the structure design is compact, the layout is reasonable, and the space and the field are effectively utilized.
In the description above, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and thus the present invention is not limited to the specific embodiments disclosed above.
Claims (10)
1. A TNT explosive spray destruction method is characterized by comprising the following steps: the TNT destroying system is used for burning the TNT, the TNT destroying system comprises a steam melting device, an atomization ignition device, a material conveying device and a safety protection device, and the steam melting device, the atomization ignition device, the material conveying device and the safety protection device are all connected with a controller; the TNT destroying system adopts human-computer isolation remote control of a controller, solid TNT is heated through low-pressure steam, after the solid TNT is melted into liquid, the liquid TNT is atomized into fog drops by utilizing high-speed flowing air generated in the material conveying device, high-voltage discharge ignition in the atomization ignition device is utilized, and the TNT fog drops are combusted to destroy the scrapped TNT;
the steam melting device comprises a melting reaction kettle and a low-pressure steam generator, the low-pressure steam generator is communicated with the melting reaction kettle through a steam pipe, a grid is arranged inside the melting reaction kettle, and the bottom of the melting reaction kettle is connected with a pushing box of the material conveying device; and the low-pressure water vapor generator generates low-pressure water vapor to heat and melt the solid TNT in the reaction kettle.
2. A TNT explosive spray destruction method as claimed in claim 1, wherein: and a quantitative settler is arranged between the melting reaction kettle and the pushing box, and a first one-way electromagnetic valve and a second one-way electromagnetic valve are respectively arranged between the inlet of the quantitative settler and the outlet of the melting reaction kettle and between the outlet of the quantitative settler and the inlet of the pushing box.
3. A TNT explosive spray destruction method as claimed in claim 2 wherein: the material conveying device comprises a pushing box, a feeding pipeline and an air compressor, wherein the pushing box comprises a box body and a push plate driven by a power mechanism, the push plate is arranged in the box body, and the periphery of the push plate is in sliding fit with the inner wall of the box body and moves along the length direction of the box body; the middle part of the box body is communicated with an outlet of the quantitative settler, an outlet of the pushing box is connected with a feeding transfer station of the safety protection device through a feeding pipeline, and two ends of the feeding pipeline are respectively provided with a third one-way electromagnetic valve and a fourth one-way electromagnetic valve; the air compressor is connected with the feeding pipeline through a compressed air pipe, a fifth one-way electromagnetic valve is arranged at the outlet of the compressed air pipe, and the fifth one-way electromagnetic valve is arranged between the third one-way electromagnetic valve and the fourth one-way electromagnetic valve; the feeding transfer station is connected with the atomization ignition device through a discharge pipeline, and a sixth one-way electromagnetic valve is arranged on the discharge pipeline.
4. A TNT explosive spray destruction method as claimed in claim 3 wherein: the power mechanism comprises a hydraulic pump and a hydraulic pusher, the hydraulic pusher comprises a hydraulic cylinder and a piston rod, the hydraulic cylinder is connected with the hydraulic pump, the tail end of the piston rod is connected with a push plate in the pushing box, and the piston rod of the hydraulic pusher is driven by the hydraulic pump to stretch.
5. A TNT explosive spray destruction method as claimed in claim 3 wherein: the outer walls of the pushing box, the feeding pipeline and the feeding transfer station are wrapped by heat insulation layers, a steam pipe is communicated with the heat insulation layers, and the steam pipe is communicated with the low-pressure water vapor generator.
6. A TNT explosive spray destruction method as claimed in claim 3 wherein: the bottom of the feeding transfer station is conical, and the outlet at the bottom of the feeding transfer station is connected with the atomization ignition device through a discharge pipeline.
7. A TNT explosive spray destruction method as claimed in claim 3 wherein: the atomization ignition device comprises an atomization nozzle, a high-pressure igniter and a flame detector, the high-pressure igniter comprises a trigger power supply and an ignition electrode, a gas-liquid mixing cavity is arranged inside the atomization nozzle, the gas-liquid mixing cavity is communicated with a discharge pipeline and a compressed air pipe, and the compressed air pipe is connected with an air compression pump; the flame detector is arranged on the outlet side of the atomizing nozzle and used for detecting TNT combustion flame.
8. A TNT explosive spray destruction method as claimed in claim 7 wherein: the TNT air inlet hole that links to each other with the ejection of compact pipeline and a plurality of air hole that links to each other with compressed air pipe are embedded to atomizing nozzle's this somatic part, the entrance point of this somatic part is cylindric, the exit end is coniform, the TNT feed port link up the middle part of this somatic part, four air holes are, and radially set up around the TNT feed port, and four air holes are all slant and TNT feed port link up in the import of gas-liquid mixing chamber.
9. A TNT explosive spray destruction method as claimed in claim 8 wherein: the air holes are four, the cross sections of the air holes are triangular, the four air holes are uniformly distributed on the periphery of the TNT feeding hole and used for forming spirally rotating air flow, negative pressure is formed at a liquid inlet channel of the gas-liquid mixing cavity, and liquid TNT is sucked into the gas-liquid mixing cavity.
10. A TNT explosive spray destruction method as claimed in any one of claims 3 to 9 wherein: the safety protection device comprises a combustion temperature detector and a pressure monitor, third to sixth one-way solenoid valves, a feeding transfer station and an explosion-proof wall, wherein the combustion temperature detector and the pressure monitor are respectively arranged at the outlet side and the inner part of the atomization ignition device; the third one-way electromagnetic valve to the sixth one-way electromagnetic valve are used for preventing the TNT liquid from flowing backwards; the feeding pipeline penetrates through the explosion-proof wall, and the explosion-proof wall is used for isolating the feeding transfer station from the pushing box and the melting reaction kettle.
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| CN113932674A (en) * | 2021-09-24 | 2022-01-14 | 北京理工大学 | Method for enhancing explosion-proof performance of explosion-proof container |
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