Powdery emulsion explosive production process and production line

Abstract

The invention discloses a powdery emulsion explosive production process and production line, and the process comprises the following steps: conveying a water phase liquid and an oil phase liquid into a static emulsifier to form an emulsion matrix; the emulsion matrix is conveyed to a feed liquid inlet of an air-flowing type atomizer, and the emulsion matrix is atomized and dispersed into fine matrix liquid drops through the air-flowing type atomizer; the matrix liquid drops meet airflow entering through the hot air distributor in the drying tower, and the matrix liquid drops are solidified into powdery particles; the powdery particles settle to the bottom of the drying tower and enter an air pipe after being discharged out of the drying tower, and an additive is introduced into the air pipe to form powder; the medicine powder is conveyed to a main cyclone separator through airflow for gas-solid separation, and then is discharged from the lower part of the main cyclone separator; conveying the medicine powder into a large-package medicine packaging machine to form finished products and packaging the finished products into large packages; the explosive finished product bags are conveyed through the belt conveying system; and the explosive finished product bags are conveyed to an explosive finished product transfer loading position for automatic loading. According to the invention, powdery emulsion explosive production without class 0 equipment is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of powdered emulsion explosive production, in particular to a powdered emulsion explosive production process and production line. Background Art

[0002] Special production equipment for civilian explosives is classified according to hazard categories: "Class 0", "Class I", "Class II", and "Class III". Among them, "Class 0" indicates equipment that is likely to cause combustion or explosion accidents in the finished product and has a service life of 5 years, while "Class III" indicates equipment that rarely causes combustion or explosion accidents in the finished product, or equipment that is isolated from humans and machines in explosion-proof chambers, and has no service life limit. It is clearly defined in the standard number GB 44504-2024. The existing production process of powdered emulsion explosives often uses a screw pump-driven, closed and pressurized emulsifier as production equipment. This type of emulsifier is "Class 0" equipment. Static emulsifiers, which are "Class III" equipment, are widely used in gel emulsion explosive production lines. However, due to the significant differences in the production processes and parameters of powdered emulsion explosives and gel emulsion explosives, it is necessary to provide a new production process to enable static emulsifiers to operate safely and stably in powdered emulsion explosives production lines. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, one object of the present invention is to provide a production process and production line for powdered emulsion explosives, which enables the production of powdered emulsion explosives without "Class 0" equipment.

[0004] In a first aspect, the present invention provides a process for producing a powdered emulsion explosive, the process steps of which are as follows:

[0005] S1: The aqueous phase liquid and the oil phase liquid are transported to the static emulsifier, and the vortex of the static emulsifier is used to form a high-quality latex matrix;

[0006] S2: The latex matrix is ​​transported to the liquid inlet of the air flow atomizer, and compressed air is introduced from the gas inlet of the air flow atomizer. The latex matrix is ​​atomized and dispersed into fine matrix droplets by the air flow atomizer;

[0007] S3: The matrix droplets meet the airflow entering through the hot air distributor in the drying tower, and the matrix droplets are dehydrated, cooled and solidified into powder particles;

[0008] S4: The powder particles settle to the bottom of the drying tower, are discharged from the drying tower through the discharge valve, and then enter the air duct, where additives are introduced to form powder;

[0009] S5: The powder is transported to the main cyclone separator by air flow for gas-solid separation. After separation, the powder is discharged through the Du Kang cone lower star valve below the main cyclone separator;

[0010] S6: The medicine powder is transported to the large packaging machine to form finished products into large bags;

[0011] S7: The finished bags of explosives are transported through a belt conveyor system;

[0012] S8: The finished explosives bags are transported to the finished explosives transfer and loading position for automatic loading.

[0013] Preferably, in step S1: the density of the aqueous phase liquid is 1.40-1.47 g / cm³; the density of the oil phase liquid is 0.82-0.89 g / cm³; the density of the latex matrix is ​​1.36-1.40 g / cm³; the temperature of the aqueous phase liquid is 120-130°C; and the temperature of the oil phase liquid is 110-125°C.

[0014] Preferably, in step S1, the aqueous phase solution comprises ammonium nitrate and water, and the mass percentages of ammonium nitrate, water and oil phase liquid are: ammonium nitrate 83.5-90, water 5-10, and oil phase liquid 5.0-6.5.

[0015] Preferably, S11: preparing the aqueous phase using ammonium nitrate solution;

[0016] The ammonium nitrate solution is transported to the water phase preparation tank. After reaching the weight liquid level requirement, the stirring paddle, screw conveyor and crusher of the water phase preparation tank are started, and a certain amount of solid ammonium nitrate is added, crushed by the crusher and then transported to the water phase preparation tank. After the feeding is completed, the screw conveyor and crusher are stopped, and the water phase preparation tank is heated to the preset temperature for insulation, and then transported to the water phase storage tank for production standby;

[0017] S12: preparing the oil phase using a composite oil phase solution;

[0018] The composite oil phase solution is transported to the oil phase melting tank. When the oil phase temperature is qualified, it is transported to the oil phase storage tank for production standby.

[0019] S13: transport of aqueous liquid and oily liquid;

[0020] The water phase liquid delivery pipeline and the oil phase liquid delivery pipeline adopt a method of setting a steam jacket on the outside of the delivery pipe. The pipeline is preheated before the water phase liquid and the oil phase liquid are delivered. The water phase liquid and the oil phase liquid are both set in a circulation mode. After the internal pressure, flow rate and temperature parameters reach the target values, the pumping pressure of the water phase liquid and the oil phase liquid is ≤3.0MPa, and the water phase liquid and the oil phase liquid are delivered to the static emulsifier;

[0021] S14: static emulsifier emulsification;

[0022] The static emulsifier uses 10-level coarse emulsion for emulsification, and the emulsification pressure is ≤2.0MPa.

[0023] Preferably, in step S13:

[0024] S131: Preheating the water phase liquid delivery pipeline, the oil phase liquid delivery pipeline and the static emulsifier respectively, and then executing step S132 after preheating is completed;

[0025] S132: Adjust the oil phase feed three-way valve and the water phase feed three-way valve to the circulation position respectively, open their respective circulation valves, and the circulation frequency is the frequency of the calibrated target flow rate. After the water-oil phase circulation flow rate stabilizes, execute step S133;

[0026] S133: First switch the oil phase feed three-way valve to the feed position, and after 10 seconds switch the water phase feed three-way valve to the feed position to start emulsification.

[0027] Preferably, in step S3: the pulverizing pressure in the drying tower is ≤2.0 MPa.

[0028] In a second aspect, the present invention proposes a powdered emulsion explosive production line, which is applied to any one of the above-mentioned powdered emulsion explosive production processes, comprising: a water phase storage tank, an oil phase storage tank, a circulation pipeline, a static emulsifier, an atomizer, a drying tower, a large packaging machine and a main cyclone separator, wherein the circulation pipeline comprises a water phase circulation branch pipe and an oil phase circulation branch pipe, the water phase storage tank is connected to the inlet of the water phase circulation branch pipe through a water phase pump, the oil phase storage tank is connected to the inlet of the oil phase circulation branch pipe through an oil phase pump, the outlet of the water phase circulation branch pipe is connected to the water phase inlet of the static emulsifier, and the outlet of the oil phase circulation branch pipe is connected to the static emulsifier. The oil phase inlet of the emulsifier is connected, the outlet of the static emulsifier is connected to the liquid inlet of the atomizer, the gas inlet of the atomizer is connected to a dehumidifier, and an air heating pipe for heating the gas internally by a heater is provided in the middle of the pipe connecting the gas inlet of the atomizer and the dehumidifier. The outlet of the atomizer is connected to the inlet of the drying tower, and the outlet of the drying tower is connected to an air duct, and the outlet of the air duct is connected to the inlet of the main cyclone separator. A large packaging medicine machine is provided below the solid outlet of the main cyclone separator, and the outlet of the large packaging medicine machine is connected to a conveying system, and a transfer loading space is provided at the outlet of the conveying system.

[0029] Preferably, the water phase circulation branch pipe includes a water phase circulation pipe and a water phase discharge pipe, the outlet of the water phase storage tank is connected to the inlet of the water phase feed three-way valve through a water phase pump, the first outlet of the water phase feed three-way valve is connected to the inlet of the water phase circulation pipe through a water phase circulation valve, the outlet of the water phase circulation pipe is connected to the interior of the water phase storage tank, the second outlet of the water phase feed three-way valve is connected to the inlet of the water phase discharge pipe, and the outlet of the water phase discharge pipe is connected to the water phase inlet of the static emulsifier;

[0030] The oil phase circulation branch pipe includes an oil phase circulation pipe and an oil phase discharge pipe. The outlet of the oil phase storage tank is connected to the inlet of the oil phase feed three-way valve through an oil phase pump. The first outlet of the oil phase feed three-way valve is connected to the inlet of the oil phase circulation pipe through an oil phase circulation valve. The outlet of the oil phase circulation pipe is connected to the interior of the oil phase storage tank. The second outlet of the oil phase feed three-way valve is connected to the inlet of the oil phase discharge pipe. The outlet of the oil phase discharge pipe is connected to the oil phase inlet of the static emulsifier.

[0031] Preferably, it also includes auxiliary cyclone separator 1 and auxiliary cyclone separator 2, and a recovery port is opened at the upper end of the drying tower near the conical discharge port. The recovery port of the drying tower is connected to the inlet of the auxiliary cyclone separator 1, and the solid outlet of the auxiliary cyclone separator 1 is connected to the inside of the air duct, and the gas outlet of the auxiliary cyclone separator 1 and the gas outlet of the main cyclone separator are both connected to the inlet of the auxiliary cyclone separator 2.

[0032] Preferably, the gas outlet of the second auxiliary cyclone separator is provided with a dust removal mechanism through a dust removal pipe, and the outlet of the dust removal mechanism is connected to an air outlet pipe.

[0033] The beneficial effects of the present invention are:

[0034] (1) A static emulsification process technology suitable for powdered emulsion explosives has been realized, eliminating the use of screw pumps to drive the closed pressure-bearing emulsifier as production equipment, further improving the safety of the production process;

[0035] (2) Circulation pipelines are set up for both water phase and oil phase transportation. After the water-oil phase circulation flow is stable, it is input into the static emulsifier for emulsification to ensure the emulsification effect;

[0036] (3) It has a suitable static emulsification production line for powdered emulsion explosives. While achieving static emulsification, it can recycle the powder through the setting of multiple cyclone separators. At the same time, it can prevent the exhaust gas from polluting the environment through the setting of dust removal mechanisms. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In the attached figure:

[0038] Figure 1 This is a flow chart of a production process of powdered emulsion explosive proposed by the present invention;

[0039] Figure 2 This is a flow chart for preparing and transporting the aqueous phase liquid and the oil phase liquid proposed in the present invention;

[0040] Figure 3 This is a flow chart of the circulation and transportation of the aqueous phase liquid and the oil phase liquid proposed in the present invention;

[0041] Figure 4A top view of the powdered emulsion explosive production line proposed by the present invention;

[0042] Figure 5 This is a schematic structural diagram of the powdered emulsion explosive production line proposed by the present invention;

[0043] Figure 6 This is a diagram showing the state of the latex matrix in the static emulsification process of the powdered emulsion explosive proposed in the present invention;

[0044] Figure 7 This is a quality inspection report diagram generated for the entrusted inspection of powdered emulsion explosive proposed by the present invention.

[0045] In the figure: 1-water phase storage tank, 2-oil phase storage tank, 3-oil phase pump, 4-water phase pump, 5-circulation pipeline, 6-static emulsifier, 7-atomizer, 8-drying tower, 9-air duct, 10-auxiliary cyclone separator 1, 11-large packaging medicine machine, 12-dehumidifier, 13-air heating pipeline, 14-heater, 15-conveyance system, 16-transfer loading space, 17-blower, 18-star valve, 19-dust removal pipeline, 20-main cyclone separator, 21-auxiliary cyclone separator 2, 22-dust removal mechanism, 23-air outlet pipeline. DETAILED DESCRIPTION

[0046] Reference Figure 1 , a production process of powdered emulsion explosive, the process steps are as follows:

[0047] The present invention proposes a process for producing powdered emulsion explosives, the process steps of which are as follows:

[0048] S1: The aqueous phase liquid and the oil phase liquid are transported to the static emulsifier, and the vortex of the static emulsifier is used to form a high-quality latex matrix;

[0049] S2: The latex matrix is ​​transported to the liquid inlet of the air flow atomizer, and compressed air is introduced from the gas inlet of the air flow atomizer. The latex matrix is ​​atomized and dispersed into fine matrix droplets by the air flow atomizer;

[0050] S3: The matrix droplets meet the airflow entering through the hot air distributor in the drying tower, and the matrix droplets are dehydrated, cooled and solidified into powder particles;

[0051] S4: The powder particles settle to the bottom of the drying tower, are discharged from the drying tower through the discharge valve, and then enter the air duct, where additives are introduced to form powder;

[0052] S5: The powder is transported to the main cyclone separator by air flow for gas-solid separation. After separation, the powder is discharged through the Du Kang cone lower star valve below the main cyclone separator;

[0053] S6: The medicine powder is transported to the large packaging machine to form finished products into large bags;

[0054] S7: The finished bags of explosives are transported through a belt conveyor system;

[0055] S8: The finished explosives bags are transported to the finished explosives transfer and loading position for automatic loading.

[0056] Reference Figure 2 , in step S1:

[0057] S11: preparing an aqueous phase using ammonium nitrate solution;

[0058] The ammonium nitrate solution is transported to the water phase preparation tank. After reaching the weight liquid level requirement, the stirring paddle, screw conveyor and crusher of the water phase preparation tank are started, and a certain amount of solid ammonium nitrate is added, crushed by the crusher and then transported to the water phase preparation tank. After the feeding is completed, the screw conveyor and crusher are stopped, and the water phase preparation tank is heated to the preset temperature for insulation, and then transported to the water phase storage tank for production standby;

[0059] S12: preparing the oil phase using a composite oil phase solution;

[0060] The composite oil phase solution is transported to the oil phase melting tank. When the oil phase temperature is qualified, it is transported to the oil phase storage tank for production standby.

[0061] S13: transport of aqueous liquid and oily liquid;

[0062] The water phase liquid delivery pipeline and the oil phase liquid delivery pipeline adopt a method of setting a steam jacket on the outside of the delivery pipe. The pipeline is preheated before the water phase liquid and the oil phase liquid are delivered. The water phase liquid and the oil phase liquid are both set in a circulation mode. After the internal pressure, flow rate and temperature parameters reach the target values, the pumping pressure of the water phase liquid and the oil phase liquid is ≤3.0MPa, and the water phase liquid and the oil phase liquid are delivered to the static emulsifier;

[0063] S14: static emulsifier emulsification;

[0064] The static emulsifier uses 10-level coarse emulsion for emulsification, and the emulsification pressure is ≤2.0MPa.

[0065] Reference Figure 3 , in step S13:

[0066] S131: Preheating the water phase liquid delivery pipeline, the oil phase liquid delivery pipeline and the static emulsifier respectively, and then executing step S132 after preheating is completed;

[0067] S132: Adjust the oil phase feed three-way valve and the water phase feed three-way valve to the circulation position respectively, open their respective circulation valves, and the circulation frequency is the frequency of the calibrated target flow rate. After the water-oil phase circulation flow rate stabilizes, execute step S133;

[0068] S133: First switch the oil phase feed three-way valve to the feed position, and after 10 seconds switch the water phase feed three-way valve to the feed position to start emulsification.

[0069] In step S3: the pulverizing pressure in the drying tower is ≤2.0 MPa.

[0070] In order to verify the explosive performance of the powdered emulsion explosive produced by the new process, the powdered emulsion explosive produced was tested through commissioned inspection. The test records of the powdered emulsion explosive are as follows:

[0071] pilot projects Powdered emulsion explosives test Test Unit XXXX Blasting Technology Research Institute Co., Ltd. Purpose of the trial To verify whether the explosive performance of powdered emulsion explosives produced by static emulsifier and new process meets the requirements Production parameters <![CDATA[The density of the aqueous liquid is 1.40 g / cm³; the density of the oil-phase liquid is 0.82 g / cm 3 ; the density of the emulsion matrix is 1.36 g / cm³; the temperature of the aqueous liquid is 120 °C; the temperature of the oil-phase liquid is 110 °C. The aqueous solution includes ammonium nitrate and water, and the mass percentages of ammonium nitrate, water, and the oil-phase liquid are: ammonium nitrate 83.5, water 10, and oil-phase liquid 6.5]]> Test content ① Detonation Distance and Detonation Velocity Test: The explosive was loaded into a 32mm diameter paper tube to form a 32mm outer diameter, 150g mass, and approximately 21cm length roll for detonation distance and detonation velocity testing. ② Toxic Gas Content Test: 110g of explosive was weighed and loaded into a 32mm diameter paper tube to form a 32mm outer diameter, 16cm length roll for toxic gas content testing. Test results reference Figure 7

[0072] In this embodiment, the other method steps are the same as those in the above embodiment, except that: in step S1: the density of the aqueous phase liquid is 1.43 g / cm³; the density of the oil phase liquid is 0.85 g / cm³ 3 ; The latex matrix density is 1.38g / cm 3 ; The water phase liquid temperature is 125℃; the oil phase liquid temperature is 117℃.

[0073] The aqueous phase solution includes ammonium nitrate and water, and the mass percentages of ammonium nitrate, water and oil phase liquid are: ammonium nitrate 90, water 5, and oil phase liquid 5.0.

[0074] Under these production parameters, the quality table of powdered emulsion explosives tested by our quality department is as follows:

[0075] Table 1

[0076]

[0077] In this embodiment, other method steps are the same as those in the above embodiment, except that in step S1:

[0078] The density of the water phase liquid is 1.47g / cm³; the density of the oil phase liquid is 0.89g / cm 3 ; The latex matrix density is 1.40g / cm 3 ; The water phase liquid temperature is 130℃; the oil phase liquid temperature is 125℃.

[0079] The aqueous phase solution includes ammonium nitrate and water, and the mass percentages of ammonium nitrate, water and oil phase liquid are: ammonium nitrate 86.3, water 8, and oil phase liquid 5.7.

[0080] Under these production parameters, the quality table of powdered emulsion explosives tested by our quality department is as follows:

[0081] Table 2

[0082]

[0083] Reference Figure 4 and Figure 5 As another embodiment of the present application, this embodiment proposes a powdered emulsion explosive production line, which is applied to any of the above-mentioned powdered emulsion explosive production processes, including: a water phase storage tank 1, an oil phase storage tank 2, a circulation pipe 5, a static emulsifier 6, an atomizer 7, a drying tower 8, a large packaging machine 11 and a main cyclone separator 20, the circulation pipe 5 includes a water phase circulation branch pipe and an oil phase circulation branch pipe, the water phase storage tank 1 is connected to the inlet of the water phase circulation branch pipe through a water phase pump 4, the oil phase storage tank 2 is connected to the inlet of the oil phase circulation branch pipe through an oil phase pump 3, the outlet of the water phase circulation branch pipe is connected to the water phase inlet of the static emulsifier 6, and the outlet of the oil phase circulation branch pipe is connected to the static The oil phase inlet of the emulsifier 6 is connected, the outlet of the static emulsifier 6 is connected to the liquid inlet of the atomizer 7, the gas inlet of the atomizer 7 is connected to the dehumidifier 12, and the middle part of the pipeline connecting the gas inlet of the atomizer 7 and the dehumidifier 12 is provided with an air heating pipeline 13 for heating the gas internally through a heater 14, the outlet of the atomizer 7 is connected to the inlet of the drying tower 8, the outlet of the drying tower 8 is connected to the air duct 9, the outlet of the air duct 9 is connected to the inlet of the main cyclone separator 20, and a large packaging medicine machine 11 is provided below the solid outlet of the main cyclone separator 20, and the outlet of the large packaging medicine machine 11 is connected to the conveying system 15, and the outlet of the conveying system 15 is provided with a transfer loading position 16.

[0084] It should be noted that in this embodiment:

[0085] The oil phase pump 3 is NETZSCH, model NMO31SYO8S48B;

[0086] The water phase pump 4 is NETZSCH, model NMO53SY06S36F;

[0087] The static emulsifier 6 adopts Chenggong Electromechanical, model CJFQ-Ⅱ;

[0088] The large packaging medicine machine 11 is from Changzhou Neway, model NWWBS-II-EX;

[0089] Obviously, based on the above, static emulsification is achieved by the static emulsifier 6 to form a latex matrix, and then the atomizer 7 disperses the latex matrix into fine matrix droplets, and the matrix droplets are dehydrated, cooled and solidified into powder particles through the drying tower 8; then it is transported through the air duct 9 and the additives are introduced into the air duct 9 to form a powder and transported to the main cyclone separator for gas-solid separation, and then the finished product is formed into a large bag in the large packaging machine 11, and it is preferably transported to the finished product transfer loading position of the explosives through the conveying system 15 for automatic loading, thereby realizing the static emulsification production process of the powdered emulsion explosive.

[0090] In this embodiment, referring to Figure 3, the water phase circulation branch pipe includes a water phase circulation pipe and a water phase discharge pipe, the outlet of the water phase storage tank 1 is connected to the inlet of the water phase feed three-way valve through the water phase pump 4, the outlet 1 of the water phase feed three-way valve is connected to the inlet of the water phase circulation pipe through the water phase circulation valve, the outlet of the water phase circulation pipe is connected to the interior of the water phase storage tank 1, the outlet 2 of the water phase feed three-way valve is connected to the inlet of the water phase discharge pipe, and the outlet of the water phase discharge pipe is connected to the water phase inlet of the static emulsifier 6;

[0091] The oil phase circulation branch pipe includes an oil phase circulation pipe and an oil phase discharge pipe. The outlet of the oil phase storage tank 2 is connected to the inlet of the oil phase feed three-way valve through the oil phase pump 3. The outlet one of the oil phase feed three-way valve is connected to the inlet of the oil phase circulation pipe through the oil phase circulation valve. The outlet of the oil phase circulation pipe is connected to the interior of the oil phase storage tank 2. The outlet two of the oil phase feed three-way valve is connected to the inlet of the oil phase discharge pipe. The outlet of the oil phase discharge pipe is connected to the oil phase inlet of the static emulsifier 6.

[0092] (4) Obviously, based on the above, both the water phase and the oil phase are transported through the circulation pipeline, and after the water-oil phase circulation flow is stable, it is input into the static emulsifier for emulsification to ensure the emulsification effect.

[0093] In this embodiment, referring to Figure 5 , also includes a secondary cyclone separator 10 and a secondary cyclone separator 21. A recovery port is opened at the upper end of the drying tower 8 near the conical discharge port. The recovery port of the drying tower 8 is connected to the inlet of the secondary cyclone separator 10. The solid outlet of the secondary cyclone separator 10 is connected to the inside of the air duct 9. The gas outlet of the secondary cyclone separator 10 and the gas outlet of the main cyclone separator 20 are both connected to the inlet of the secondary cyclone separator 21.

[0094] Obviously, based on the above, the powder particles formed by the matrix droplets in the gas in the drying tower 8 are further separated by the auxiliary cyclone separator 10; the powder transported by the air duct is separated from the gas and solid by the main cyclone separator 20; and the gas discharged from the auxiliary cyclone separator 10 and the main cyclone separator 20 is separated from the gas and solid by the auxiliary cyclone separator 21, thereby ensuring that the powder is completely separated.

[0095] In this embodiment, referring to Figure 5 The gas outlet of the secondary cyclone separator 21 is connected to a dust removal mechanism 22 through a dust removal pipe 19 , and the outlet of the dust removal mechanism 22 is connected to an air outlet pipe 23 .

[0096] It should be noted that the dust removal mechanism 22 in this embodiment adopts a cyclone dust collector;

[0097] Obviously, based on the above, the provision of a dust removal mechanism can prevent the exhaust gas from polluting the environment.

Claims

1. A process for producing powdered emulsion explosive, characterized in that: The process steps are as follows: S1: The aqueous phase liquid and the oil phase liquid are transported to the static emulsifier, and the vortex of the static emulsifier is used to form a high-quality latex matrix; S2: The latex matrix is ​​transported to the liquid inlet of the air flow atomizer, and compressed air is introduced from the gas inlet of the air flow atomizer. The latex matrix is ​​atomized and dispersed into fine matrix droplets by the air flow atomizer; S3: The matrix droplets meet the airflow entering through the hot air distributor in the drying tower, and the matrix droplets are dehydrated, cooled and solidified into powder particles; S4: The powder particles settle to the bottom of the drying tower, are discharged from the drying tower through the discharge valve, and then enter the air duct, where additives are introduced to form powder; S5: The powder is transported by airflow to the main cyclone separator for gas-solid separation. After separation, the powder is discharged through the Du Kang cone lower star valve below the main cyclone separator; S6: The medicine powder is transported to the large packaging machine to form finished products into large bags; S7: The finished bags of explosives are transported through a belt conveyor system; S8: The finished explosives bags are transported to the finished explosives transfer and loading position for automatic loading.

2. The process for producing a powdered emulsion explosive according to claim 1, wherein: In step S1: the density of the aqueous phase liquid is 1.40 to 1.47 g / cm³; the density of the oil phase liquid is 0.82 to 0.89 g / cm³; the density of the latex matrix is ​​1.36 to 1.40 g / cm³; the temperature of the aqueous phase liquid is 120 to 130° C.; and the temperature of the oil phase liquid is 110 to 125° C.

3. A process for producing powdered emulsion explosive according to claim 2, characterized in that: In step S1 : the aqueous phase solution includes ammonium nitrate and water, and the mass percentages of ammonium nitrate, water and oil phase liquid are: ammonium nitrate 83.5-90, water 5-10, and oil phase liquid 5.0-6.

5.

4. The process for producing a powdered emulsion explosive according to claim 1, wherein: In step S1: S11: preparing an aqueous phase using ammonium nitrate solution; The ammonium nitrate solution is transported to the water phase preparation tank. After reaching the weight liquid level requirement, the stirring paddle, screw conveyor and crusher of the water phase preparation tank are started, and a certain amount of solid ammonium nitrate is added, crushed by the crusher and then transported to the water phase preparation tank. After the feeding is completed, the screw conveyor and crusher are stopped, and the water phase preparation tank is heated to the preset temperature for insulation, and then transported to the water phase storage tank for production standby; S12: preparing the oil phase using a composite oil phase solution; The composite oil phase solution is transported to the oil phase melting tank. When the oil phase temperature is qualified, it is transported to the oil phase storage tank for production standby. S13: transport of aqueous liquid and oily liquid; The water phase liquid delivery pipeline and the oil phase liquid delivery pipeline adopt a method of setting a steam jacket on the outside of the delivery pipe. The pipeline is preheated before the water phase liquid and the oil phase liquid are delivered. The water phase liquid and the oil phase liquid are both set in a circulation mode. After the internal pressure, flow rate and temperature parameters reach the target values, the pumping pressure of the water phase liquid and the oil phase liquid is ≤3.0MPa, and the water phase liquid and the oil phase liquid are delivered to the static emulsifier; S14: static emulsifier emulsification; The static emulsifier uses 10-level coarse emulsion for emulsification, and the emulsification pressure is ≤2.0MPa.

5. The process for producing a powdered emulsion explosive according to claim 4, wherein: In step S13: S131: Preheating the water phase liquid delivery pipeline, the oil phase liquid delivery pipeline and the static emulsifier respectively, and then executing step S132 after preheating is completed; S132: Adjust the oil phase feed three-way valve and the water phase feed three-way valve to the circulation position respectively, open their respective circulation valves, and the circulation frequency is the frequency of the calibrated target flow rate. After the water-oil phase circulation flow rate stabilizes, execute step S133; S133: First switch the oil phase feed three-way valve to the feed position, and after 10 seconds switch the water phase feed three-way valve to the feed position to start emulsification.

6. The process for producing a powdered emulsion explosive according to claim 1, wherein: In step S3: the pulverizing pressure in the drying tower is ≤2.0 MPa.

7. A powdered emulsion explosive production line, characterized in that: The process for producing powdered emulsion explosives according to any one of claims 1 to 6 comprises: a water phase storage tank (1), an oil phase storage tank (2), a circulation pipe (5), a static emulsifier (6), an atomizer (7), a drying tower (8), a large packaging machine (11) and a main cyclone separator (20), wherein the circulation pipe (5) comprises a water phase circulation branch pipe and an oil phase circulation branch pipe, the water phase storage tank (1) is connected to the inlet of the water phase circulation branch pipe via a water phase pump (4), the oil phase storage tank (2) is connected to the inlet of the oil phase circulation branch pipe via an oil phase pump (3), the outlet of the water phase circulation branch pipe is connected to the water phase inlet of the static emulsifier (6), the outlet of the oil phase circulation branch pipe is connected to the oil phase inlet of the static emulsifier (6), and the outlet of the static emulsifier (6) is connected to the oil phase inlet. The outlet of the atomizer (7) is connected to the liquid inlet of the atomizer (7), the gas inlet of the atomizer (7) is connected to a dehumidifier (12), and an air heating pipe (13) for heating the gas through a heater (14) is provided in the middle of the pipe connecting the gas inlet of the atomizer (7) and the dehumidifier (12). The outlet of the atomizer (7) is connected to the inlet of the drying tower (8), and the outlet of the drying tower (8) is connected to an air duct (9). The outlet of the air duct (9) is connected to the inlet of the main cyclone separator (20). A large packaging medicine machine (11) is provided below the solid outlet of the main cyclone separator (20), and the outlet of the large packaging medicine machine (11) is connected to a conveying system (15). The outlet of the conveying system (15) is provided with a transfer loading space (16).

8. A powdered emulsion explosive production line according to claim 7, characterized in that: The water phase circulation branch pipe includes a water phase circulation pipe and a water phase discharge pipe, the outlet of the water phase storage tank (1) is connected to the inlet of the water phase feed three-way valve through the water phase pump (4), the outlet 1 of the water phase feed three-way valve is connected to the inlet of the water phase circulation pipe through the water phase circulation valve, the outlet of the water phase circulation pipe is connected to the interior of the water phase storage tank (1), the outlet 2 of the water phase feed three-way valve is connected to the inlet of the water phase discharge pipe, and the outlet of the water phase discharge pipe is connected to the water phase inlet of the static emulsifier (6); The oil phase circulation branch pipe includes an oil phase circulation pipe and an oil phase discharge pipe. The outlet of the oil phase storage tank (2) is connected to the inlet of the oil phase feed three-way valve through the oil phase pump (3). The first outlet of the oil phase feed three-way valve is connected to the inlet of the oil phase circulation pipe through the oil phase circulation valve. The outlet of the oil phase circulation pipe is connected to the interior of the oil phase storage tank (2). The second outlet of the oil phase feed three-way valve is connected to the inlet of the oil phase discharge pipe. The outlet of the oil phase discharge pipe is connected to the oil phase inlet of the static emulsifier (6).

9. The powdered emulsion explosive production line according to claim 7, characterized in that: It also includes a secondary cyclone separator 1 (10) and a secondary cyclone separator 2 (21). The drying tower (8) is provided with a recovery port at the upper end near the conical discharge port. The recovery port of the drying tower (8) is connected to the inlet of the secondary cyclone separator 1 (10). The solid outlet of the secondary cyclone separator 1 (10) is connected to the inside of the air duct (9). The gas outlet of the secondary cyclone separator 1 (10) and the gas outlet of the main cyclone separator (20) are both connected to the inlet of the secondary cyclone separator 2 (21).

10. The process for producing a powdered emulsion explosive according to claim 9, wherein: The gas outlet of the secondary cyclone separator (21) is provided with a dust removal mechanism (22) through a dust removal pipe (19), and the outlet of the dust removal mechanism (22) is connected to an air outlet pipe (23).

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