CN217392031U - A exhaust-gas treatment integrated device for scrapping ammunition is destroyed - Google Patents
A exhaust-gas treatment integrated device for scrapping ammunition is destroyed Download PDFInfo
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- CN217392031U CN217392031U CN202220079129.6U CN202220079129U CN217392031U CN 217392031 U CN217392031 U CN 217392031U CN 202220079129 U CN202220079129 U CN 202220079129U CN 217392031 U CN217392031 U CN 217392031U
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Abstract
The utility model belongs to the technical field of chemical industry organic waste gas administers. The utility model particularly discloses a waste gas treatment integrated device for scrapping ammunition and destroying, include: the device comprises a buffer unit, a high-efficiency dust removal unit, a catalytic combustion filtering unit, a denitration unit, an induced draft unit, a desulfurization unit and an exhaust unit. The method of 'buffer unit, high-efficiency pulse dust removal, catalytic combustion, denitration and desulfurization' is used for effectively optimizing the adverse effects of high operating cost and hazardous waste generation of the traditional activated carbon adsorption method, and avoiding the potential safety hazard caused by enrichment of pollution components in the activated carbon. By adopting the method of 'buffering + efficient pulse dust removal + catalytic combustion + denitration + desulfurization', the waste gas is treated under the high-temperature complex environment to ensure the standard emission, and heavy metals and acidic particles, organic waste gas, NOx and SO 2 Has better removal rate, safe and stable waste gas treatment unit, low operation cost and less waste water generation amount.
Description
Technical Field
The utility model relates to a chemical industry organic waste gas administers technical field, especially relates to a waste gas treatment integrated device for scrapping ammunition and destroying.
Background
Ammunition is life-bound and beyond it, destruction processes must be carried out according to relevant regulations. The disposal of discarded ammunition is a frequent task. The discarded ammunition is destroyed, and the environment is seriously polluted. The environmental protection is an important component of the national development strategy, and how to treat the environmental pollution caused by destroying discarded ammunition is a very urgent subject before people.
The disposal of the scrapped ammunition is a regular work of army and war factory, and mainly adopts the disposal methods of disassembly, emptying, burning and explosion. The waste water, waste gas, waste residues and noise during the destruction treatment can have a negative effect on the surrounding ecological environment. The pollution problem of the waste water is generally concerned in China, the pollution research on waste gas, waste residue and noise is less, and only individual military plants adopt pollution purification treatment in individual operation links. Fully recognizing pollution generated in the burning operation link and researching and developing related equipment has practical significance. Ammunition destruction is the handling of a series of spent ammunitions such as: small-caliber cannonball, propellant powder, pyrotechnic composition, explosive, small initiating explosive, fuse, primer, bullet, safety air bag gas generator and the like. The burning method is the most direct and effective destruction method, and the destruction furnace can effectively and thoroughly burn and decompose various overdue ammunition and convert the overdue ammunition into CO, NOx, SOx, metals and oxides thereof and the like, wherein the metals and the oxides thereof are discharged in the form of slag, so that the environment is polluted, and great potential safety hazards exist. The existing waste gas treatment methods for destroying discarded ammunition are respectively an active carbon adsorption treatment method, a cloth bag dust removal treatment method and a plasma process treatment method. The method for treating the waste gas destroyed by the discarded ammunition through activated carbon adsorption has the adverse effects of high operating cost and hazardous waste. The method for treating waste gas in the destruction of discarded ammunition by electric precipitation easily causes the problems of flammability, explosiveness and large occupied area. The waste gas destroying method for treating the scrapped ammunition by the plasma process easily causes the problems of unsafe operation and large potential safety hazard, so the improvement is needed.
SUMMERY OF THE UTILITY MODEL
The utility model provides a solve the existing problem that the energy consumption is high, the working costs is high, the operation is unsafe, and provide a waste gas treatment integrated device for scrapping ammunition and destroying. The device can achieve the effects of low processing energy consumption, high efficiency, low cost, safety and reliability.
The utility model aims at realizing through the following technical scheme:
a waste gas treatment integrated device for destroying scrapped ammunition comprises a buffer unit, a high-efficiency dust removal unit, a catalytic combustion filtering unit, a denitration unit, an induced air unit, a desulfurization unit and an exhaust unit; the waste gas is communicated with the buffering unit, the buffering unit comprises a buffering gas storage tank and a cooling device arranged at the gas inlet end, the cooling device rapidly cools the waste gas, the destroyed waste gas is collected through a pipeline and then enters the buffering gas storage tank for buffering, cooling and pretreatment, and the air flow is ensured to safely enter the next stage of process at a constant speed; the right top opening of the buffer unit is communicated with the high-efficiency dust removal unit, the high-efficiency dust removal unit comprises an emergency cooling device, an air flow distribution plate, a blowing device, a filtering area, an ash bucket and an ash discharge device, the emergency cooling device is arranged at an air inlet of the high-efficiency dust removal unit, the air flow distribution plate is positioned behind the air inlet, the blowing device is arranged at the top of the high-efficiency dust removal unit, the filtering area is arranged in the middle of the high-efficiency dust removal unit, the ash bucket is positioned below the filtering area, the ash discharge device is arranged at the bottom of the high-efficiency dust removal unit, and the ash discharge device is periodically opened for discharging ash; the right side wall opening of the high-efficiency dust removal unit is communicated with the catalytic combustion filtering unit, the catalytic combustion filtering unit comprises a heat exchange device, a catalytic combustion furnace and a flame arrester, the catalytic combustion furnace is arranged above the heat exchange device, and the flame arrester is arranged on an air inlet pipeline and an air outlet pipeline of the catalytic combustion filtering unit; the upper part of the right side wall of the catalytic combustion filtering unit is communicated with the denitration unit, the denitration unit comprises an ammonia spraying grid, a spray gun arranged at an air inlet and an air flow distribution device, and the air flow distribution device is positioned below the spray gun; the upper part of the denitration unit is communicated with the induced air unit, the upper part of the induced air unit is communicated with the desulfurization unit, the desulfurization unit comprises a spraying absorption device and a demisting device, the demisting device is positioned above the spraying absorption device, and the upper part of the desulfurization unit is communicated with the exhaust unit.
As a preference: the buffer gas storage tank is made of stainless steel and non-flammable materials and has a volume of 3-6m 3 。
As a preference: the high-efficiency dust removal unit adopts a pulse dust removal mode, the filter bag is made of an inorganic oil-resistant high-temperature-resistant hydrophobic type film covering material, the shape of the filter bag is phi 120-phi 160mm, and the bag length is 2-6 m.
As a preference: the gram weight of the filter bag of the high-efficiency dust removal unit is 400-800g/m 2 Meanwhile, the bag thickness delta is 1-3mm, and the filtering wind speed is 0.6-1.2 m/min.
As a preference: the catalytic combustion filtering unit adopts a noble metal catalyst.
As a preference: the denitration unit adopts a double-fluid spray gun, the flow rate of the selected spray gun is 60-80L/h, the number of the spray guns is 1-2, and the spray gun is made of Hastelloy.
As a preference: the spraying system of the desulfurization unit adopts high-efficiency atomizing nozzles, 2-5 spraying layers are arranged, the spraying density is set to be 80-120L/square meter, and the spraying distance is set to be 400-800 mm.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a waste gas treatment integrated device for scrapping ammunition is destroyed, the buffer unit is as the preprocessing unit, carries out buffering cooling preliminary treatment through spraying the unit, and waste gas and the liquid reverse contact in the buffer unit adopt the effectual degreasing, cooling and the explosion-proof purpose that has reached of method of buffer unit washing.
Through the effective structural design of the gas distribution unit of the high-efficiency pulse dust removal unit, waste gas uniformly enters the dust removal device, dust-containing gas penetrates through the filter bag under the action of negative pressure, dust is blocked by the filter bag and is adsorbed on the outer surface of the filter bag, and the aim of effectively removing large-diameter metal oxides containing dust, a part of volatile heavy metals and acidic harmful substances is fulfilled by the high-efficiency pulse dust removal method.
The problem of frequent replacement of consumable materials of common bag type dust removal is effectively optimized through selection of filter bag materials.
The organic waste gas components in the waste gas are safely and efficiently treated by the optimized design of the catalyst of the catalytic combustion furnace. The problems of low treatment efficiency and unsafe operation of the plasma method are effectively solved.
NOx in the exhaust gas is effectively removed through the denitration unit.
Effective removal of SO from exhaust gas by a desulfurization unit 2 。
The method of 'buffer unit, high-efficiency pulse dust removal, catalytic combustion, denitration and desulfurization' is used for effectively optimizing the adverse effects of high operating cost and hazardous waste generation of the traditional activated carbon adsorption method, and avoiding the potential safety hazard caused by enrichment of pollution components in the activated carbon. By adopting the method of 'buffering + high-efficiency pulse dust removal + catalytic combustion + denitration + desulfurization', the waste gas is treated in a high-temperature complex environment to ensure that the waste gas reaches the standard and is discharged, and heavy metals, acidic particulate matters, organic waste gas, NOx and SO 2 Has better removal rate, safe and stable waste gas treatment unit, low operation cost and less waste water generation amount.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.
Fig. 1 is a schematic structural diagram of an integrated waste gas treatment device for scrapped ammunition destruction of the utility model.
In the figure: 1-an air intake unit; 2-a buffer unit; 3-a buffer unit spray unit; 4-high-efficiency dust removal unit; 5-a filter bag; 6-an electromagnetic pulse device; 7-ash discharge device; 8-a catalytic combustion filtration unit; 9-a heating device; 10-temperature detection; 11-catalytic combustion filtration unit catalyst; 12-heat exchange means; 13-a cold compensation device; 14-a denitration unit; 15-a spray gun; 16-a denitration unit catalyst; 17-a desulfurization unit; 18-a desulfurization unit spray layer; 19-a demisting device; 20-an exhaust unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.
Embodiment, as shown in fig. 1, the embodiment discloses an integrated exhaust gas treatment device for destruction of discarded ammunition, comprising: the device comprises a buffer unit 2, a high-efficiency dust removal unit 4, a catalytic combustion filtering unit 8, a denitration unit 14, an induced air unit, a desulfurization unit 17 and an exhaust unit 20; the waste gas is communicated with the buffer unit 2, the buffer unit 2 comprises a buffer gas storage tank and a cooling device arranged at the gas inlet end, the cooling device rapidly cools the waste gas, the destroyed waste gas is collected through a pipeline and then enters the buffer gas storage tank for buffering, cooling and pretreatment, and the air flow is ensured to safely enter the next stage of process at a constant speed; the top opening on the right side of the buffer unit 2 is communicated with the efficient dust removal unit 4, the efficient dust removal unit 4 comprises an emergency cooling device, an air flow distribution plate, a blowing device, a filtering area, an ash bucket and an ash discharge device 7, the emergency cooling device is arranged at the air inlet of the efficient dust removal unit 4, the air flow distribution plate is positioned behind the air inlet, the blowing device is arranged at the top of the efficient dust removal unit 4, the filtering area is arranged in the middle of the efficient dust removal unit 4, the ash bucket is positioned below the filtering area, the ash discharge device 7 is arranged at the bottom of the efficient dust removal unit 4, and the ash discharge device 7 is periodically opened for discharging ash; the right side wall opening of the high-efficiency dust removal unit 4 is communicated with a catalytic combustion filtering unit 8, the catalytic combustion filtering unit 8 comprises a heat exchange device 12, a catalytic combustion furnace and a flame arrester, the catalytic combustion furnace is arranged above the heat exchange device 12, and the flame arrester is arranged on an air inlet pipeline and an air outlet pipeline of the catalytic combustion filtering unit 8; the upper part of the right side wall of the catalytic combustion filtering unit 8 is communicated with a denitration unit 14, the denitration unit 14 comprises an ammonia spraying grid, a spray gun arranged at an air inlet and an air flow distribution device, and the air flow distribution device is positioned below the spray gun; the upper portion of the denitration unit 14 is communicated with an induced draft unit, the upper portion of the induced draft unit is communicated with a desulfurization unit 17, the desulfurization unit 17 comprises a spraying absorption device and a demisting device 19, the demisting device 19 is positioned above the spraying absorption device, and the upper portion of the desulfurization unit 17 is communicated with an exhaust unit 20.
Optimizing:
the buffer gas storage tank is made of stainless steel and non-flammable material and has a volume of 3-6m 3 。
The high-efficiency dust removal unit 4 adopts a pulse dust removal mode, the filter bag 5 adopts an inorganic oil-resistant high-temperature-resistant hydrophobic type film covering material, the shape of the filter bag 5 is phi 120-phi 160mm, and the bag length is 2-6 m.
The weight of a filter bag 5 of the high-efficiency dust removal unit 4 is between 400 and 800g/m2, the bag thickness is delta 1-3mm, and the filtering wind speed is 0.6-1.2 m/min.
The catalytic combustion filter unit 8 uses a noble metal catalyst.
The denitration unit 14 adopts a double-fluid spray gun, the flow rate of the selected spray gun is 60-80L/h, the number of the spray guns is 1-2, and the spray gun is made of Hastelloy.
The desulfurization unit 17 adopts a high-efficiency atomizing nozzle, 2-5 spraying layers are arranged, the spraying density is set at 80-120L/square meter, and the spraying distance is set at 800mm for 400 plus square meter.
Waste gas sends into buffer unit 2 through the unit 1 that admits air, sprays unit 3 through buffer unit and carries out buffering cooling preliminary treatment, and waste gas and the reverse contact of liquid in the buffer to reach degreasing, cooling and explosion-proof effect. Under the effect of fan traction, dusty gas gets into high-efficient dust removal unit 4, and the high temperature flue gas after buffering and preliminary treatment carries out the high-efficient purification of second grade, can get rid of most dust after the high-efficient pulse dust collector purifies, and the purpose is the major diameter metal oxide that further desorption contains the dust and partly volatile heavy metal and acidic harmful substance, avoids leading to the catalytic combustion at rear portion, denitration and desulfurization equipment to load too high, reduces the instability that the unit discharged. The high-efficiency dust removal unit 4 adopts a pulse dust removal mode, the filter bag 5 is made of an inorganic oil-resistant high-temperature-resistant hydrophobic type film covering material and is impregnated by PPS and PTFE, the filter bag is selected to have a diameter of 130mm, and the bag length is 2 m. The gram weight of a filter bag of the high-efficiency dust removal unit is 550g/m 2 The bag thickness delta 1.9 mm. The designed filtering wind speed is 0.75 m/min. The resistance of the dust remover increases along with the increase of the thickness of dust on the surface of the filter material. When the resistance reaches a certain specified value or reaches a preset time, the corresponding electromagnetic pulse device 6 cleans the dust of the dust-removing filter bag 5 in the box body. The collected dust is periodically discharged through a bottom ash discharge device 7. The gas fully reacts in the high-efficiency dust removal unit 4, the deacidification and the dust removal are carried out, the catalytic combustion filtering unit 8 is communicated with the upper part of the right side, the pretreated organic waste gas is introduced into the catalytic combustion filtering unit 8 under the action of the fan, and the gas is heated to a proper temperature range in the catalytic combustion filtering unit 8, so that the non-methane total hydrocarbon and C, H, O organic matters in the tail gas are removed, and the gas is completely decomposed into CO 2 、H 2 O, and the like. The catalytic combustion filter unit 8 is provided therein with a heating device 9, a temperature detector 10, a catalytic combustion filter unit catalyst 11, a heat exchanger 12, a cooling device 13, and the like. The heating device 9 is positioned in the catalytic oxidation unit and mainly used for preheating a catalyst 11 of the catalytic combustion filtering unit, and if the temperature of the flue gas entering the catalytic furnace is proper, the temperature detection device 10 can automatically feed back a signal to the heating device 9 to stop heating. The high-concentration organic waste gas enters the catalytic oxidation module under the action of external force and is subjected to catalytic combustionThe filtering unit catalyst 11 is noble metal catalyst, and the waste gas is burnt and decomposed to be purified under the catalytic action of noble metal platinum. In consideration of heat recycling, the heat exchange device 12 is additionally arranged in the unit, and the heat exchange device 12 is in a plate type, so that the entering flue gas is preheated alternately, the preheating utilization rate is improved, the energy consumption is reduced, a flow guide channel of the plate type heat exchange device is lengthened, the combination and the residence time of the catalyst and the flue gas are prolonged, and the catalytic combustion efficiency is improved. When the flue gas temperature in the unit is too high, the cold compensation device 13 is automatically started, the furnace temperature is reduced, and the constant-temperature operation of the unit is ensured. The cooling device 13 and the temperature detecting device 10 are complementary feedback. A fire retardant device is arranged at the outlet of the catalytic combustion filtering unit 8, so that the safe and stable operation of the unit is ensured. 8 right side openings of catalytic combustion filter unit communicate denitration unit 14, and denitration unit entry is equipped with the gas guide plate, cuts apart the exhaust gas air current, and inside sets up 2 layers of denitration unit catalyst layer 16, and the vanadium titanium catalyst is selected for use to the catalyst, and the purpose is got rid of a large amount of NOx in the waste gas, and spray gun 15 is located the catalyst top. The spray gun 15 adopts a double-fluid spray gun, the flow rate of the selected spray gun is 80L/h, the number of the spray guns is 1, and the material of the spray gun is Hastelloy. The purpose is to make the waste gas and denitration solvent better contact. An opening above the denitration unit 14 is communicated with the desulfurization unit 17, the desulfurization unit 17 is designed as a hollow tower, a spraying layer 18 is arranged inside the desulfurization unit 17, 2 spraying layers 18 are arranged, the spraying layer 18 adopts high-efficiency atomizing nozzles, the spraying density is set to be 80-120L/square meter, and the spraying interval is set to be 400-800 mm. The water supply unit adopts a bidirectional double-fluid solid cone nozzle, and the cone angle is set to be 60-120 degrees. The aqueous solution is uniformly dispersed by a high-efficiency atomizing nozzle, and the liquid-gas ratio is 1. The demisting device 19 is positioned above the spraying layer, so that gas-liquid entrainment can be effectively reduced. The gas finally enters the exhaust unit 20 through the opening of the upper part of the desulfurization unit 17 communicated with the exhaust unit 20, and is then discharged.
As shown in fig. 1, an integrated device for waste gas treatment for scrapped ammunition destruction is a device of 'buffering + efficient pulse dust removal + catalytic combustion + denitration + desulfurization'. After being treated by the integrated waste gas treatment device, the concentration of the particles in the waste gas is 2.7mg/m 3 (6% oxygen content basis), a treatment efficiency of 99.9%, and a CO concentration of 16mg/m 3 (6％Reference oxygen content), the treatment efficiency was 99.8%, and the NOx concentration was 9mg/Nm 3 (6% reference oxygen content), 99.1% treatment efficiency, SO 2 Concentration 3mg/Nm 3 (6% reference oxygen content), the treatment efficiency was 99.8%.
At 6771Nm 3 The following table shows a comparison of the pre-treatment and post-treatment data for the integrated waste gas treatment device for destruction of scrapped ammunition, taking the emissions/h as an example:
after the experiment is finished, the concentration of waste gas particles in the destroyed waste gas is 2.7mg/Nm 3 (6% based oxygen content), treatment efficiency 99.9%, CO concentration 16mg/Nm 3 (6% reference oxygen content), treatment efficiency 99.8%, NOx concentration 9mg/Nm 3 (6% reference oxygen content), treatment efficiency 99.1%, SO 2 Concentration 3mg/Nm 3 (6% reference oxygen content), the treatment efficiency was 99.8%. The effects of low energy consumption, high treatment efficiency, low operating cost, small occupied area, safety and reliability are achieved.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention. For better illustrating the objects and advantages of the present invention, the following description will be made with reference to the accompanying drawings and examples, but the present invention is not limited to the examples.
Claims (7)
1. The utility model provides an exhaust-gas treatment integrated device for scrapping ammunition is destroyed which characterized in that: the device comprises a buffer unit, an efficient dust removal unit, a catalytic combustion filtering unit, a denitration unit, an induced air unit, a desulfurization unit and an exhaust unit;
the waste gas is communicated with the buffer unit, the buffer unit comprises a buffer gas storage tank and a cooling device arranged at the gas inlet end, the cooling device rapidly cools the waste gas, the destroyed waste gas is collected through a pipeline and then enters the buffer gas storage tank for buffering, cooling and pretreatment, and the air flow is ensured to safely enter the next stage of process at a constant speed;
the top opening on the right side of the buffering unit is communicated with the efficient dust removal unit, the efficient dust removal unit comprises an emergency cooling device, an airflow distribution plate, a blowing device, a filtering area, an ash bucket and an ash discharge device, the emergency cooling device is arranged at an air inlet of the efficient dust removal unit, the airflow distribution plate is positioned behind the air inlet, the blowing device is arranged at the top of the efficient dust removal unit, the filtering area is arranged in the middle of the efficient dust removal unit, the ash bucket is positioned below the filtering area, the ash discharge device is arranged at the bottom of the efficient dust removal unit, and the ash discharge device is periodically opened for discharging ash;
the right side wall opening of the high-efficiency dust removal unit is communicated with the catalytic combustion filtering unit, the catalytic combustion filtering unit comprises a heat exchange device, a catalytic combustion furnace and a flame arrester, the catalytic combustion furnace is arranged above the heat exchange device, and the flame arrester is arranged on an air inlet pipeline and an air outlet pipeline of the catalytic combustion filtering unit;
the upper part of the right side wall of the catalytic combustion filtering unit is communicated with the denitration unit, the denitration unit comprises an ammonia spraying grid, a spray gun arranged at an air inlet and an air flow distribution device, and the air flow distribution device is positioned below the spray gun;
the denitration unit is communicated with the induced air unit, the induced air unit is communicated with the desulfurization unit, the desulfurization unit comprises a spraying absorption device and a demisting device, the demisting device is located above the spraying absorption device, and the desulfurization unit is communicated with the exhaust unit.
2. The integrated exhaust treatment device of claim 1, wherein: the buffer gas storage tank is made of stainless steel and non-flammable materials and has the volume of 3-6m 3 。
3. The integrated exhaust treatment device of claim 1, wherein: the high-efficiency dust removal unit adopts a pulse dust removal mode, the filter bag is made of an inorganic oil-resistant high-temperature-resistant hydrophobic type film covering material, the shape of the filter bag is phi 120-phi 160mm, and the bag length is 2-6 m.
4. The integrated exhaust treatment device of claim 1, wherein: the gram weight of the filter bag of the high-efficiency dust removal unit is 400-800g/m 2 The bag thickness delta is 1-3mm, and the filtering wind speed is 0.6-1.2 m/min.
5. The integrated exhaust treatment device of claim 1, wherein: the catalytic combustion filtering unit adopts a noble metal catalyst.
6. The integrated exhaust treatment device of claim 1, wherein: the denitration unit adopts a double-fluid spray gun, the flow rate of the selected spray gun is 60-80L/h, the number of the spray guns is 1-2, and the spray gun is made of Hastelloy.
7. The integrated exhaust treatment device of claim 1, wherein: the spraying system of the desulfurization unit adopts an efficient atomizing nozzle and is provided with 2-5 spraying layers, the spraying density is set to be 80-120L/square meter, and the spraying distance is set to be 400-800 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220079129.6U CN217392031U (en) | 2022-01-13 | 2022-01-13 | A exhaust-gas treatment integrated device for scrapping ammunition is destroyed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220079129.6U CN217392031U (en) | 2022-01-13 | 2022-01-13 | A exhaust-gas treatment integrated device for scrapping ammunition is destroyed |
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| CN217392031U true CN217392031U (en) | 2022-09-09 |
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| CN202220079129.6U Active CN217392031U (en) | 2022-01-13 | 2022-01-13 | A exhaust-gas treatment integrated device for scrapping ammunition is destroyed |
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