An apparatus and method for preparing monodisperse emulsion explosive and monodisperse emulsion explosive

Abstract

The application provides a device and method for preparing monodisperse emulsion explosive and the monodisperse emulsion explosive, and relates to the technical field of emulsion explosive production. The device comprises a raw material supply unit, a laminar flow emulsification unit, a material separation unit and a sensitization and reinforcement mixing unit. The preparation method comprises the following steps: mixing and emulsifying an oil phase and a water phase in a micron-level laminar flow emulsification unit to obtain a mixed material; the mixed material is separated by the material separation unit to obtain a monodisperse water-in-oil emulsion matrix and an oil phase separation product, and the oil phase separation product is recycled between an oil phase feeding device and the laminar flow emulsification unit; and the monodisperse emulsion matrix is uniformly distributed with a sensitization material entering through the sensitization and reinforcement mixing unit in the sensitization and reinforcement mixing unit to obtain the monodisperse emulsion explosive. The device and method provided by the application are far smaller than the detonation diameter of the emulsion explosive in the production process, can realize intrinsic safety, and the storage period of the produced emulsion explosive is long and the density can be designed and adjusted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of emulsion explosive production, and particularly relates to an equipment and method for preparing monodisperse emulsion explosive and monodisperse emulsion explosive. BACKGROUND

[0002] Emulsion explosive is an industrial explosive with a water-in-oil structure, which is formed by dispersing microdroplets of an oxidizing agent salt aqueous solution in an oil phase continuous medium containing dispersed bubbles or porous materials such as hollow glass beads, with the help of surfactants. Uniform distribution of the dispersed phase in the continuous phase is a key technology in the production process of emulsion matrix and a key factor determining the performance of emulsion explosive.

[0003] The existing emulsion explosive preparation process is to destroy the interface between two mutually insoluble liquids by external force field (mechanical, high-pressure stirring or ultrasonic) to make the oil phase and the water phase perform high-speed shearing and mixing, so as to form a micron-level water-in-oil emulsion matrix, and then to add a sensitizing agent and porous materials such as glass beads to the water phase to generate gas or to uniformly distribute the porous materials in the matrix by stirring to form emulsion explosive. The production equipment of emulsion explosive has experienced paddle type emulsifying tank, colloid mill, high-speed shearing type dynamic emulsifier, open stirring static emulsification equipment and full static emulsification equipment.

[0004] The current emulsification technology is designed based on the principle of jet vortex flow emulsification. By changing the flow direction of the water-oil two-phase through mechanical structure, the radial mixing effect is formed, and at the same time the fluid flows in the pipeline and impacts various types of plate elements, increasing the velocity gradient of the fluid laminar flow and forming turbulence, generating a large number of vortexes, so that the oil and water phases are fully mixed, and under the action of surfactants, the emulsion matrix droplets are formed, such as CN103664424B, an emulsification method and equipment for emulsion explosive.

[0005] In recent years, with the maturity of microfluidic technology, in the micron-scale channel, a technology is formed to separate the water phase into discrete droplets by the interaction between the shearing force and the interfacial tension of the water-oil two-phase flow. For example, CN112979396A, a preparation of emulsion explosive based on membrane dispersion micro-reactor, discloses the preparation of emulsion matrix by using micron-level microporous membranes. CN113105297A, a preparation method and system of emulsion explosive based on passive micro-mixing chip, discloses a method for preparing emulsion matrix by using a microfluidic mixing chip.

[0006] The preparation method of the existing emulsion explosive has simple process and high production rate, and the channel size is often millimeter level. However, due to the non-uniformity of the external force field, the size and morphology of the formed latex matrix droplets are quite different, and the prepared droplets are generally polydisperse, which will cause the decline of the emulsion explosive in power and storage performance. The CN112979396A and CN113105297A use stirring method for sensitization after preparing the latex matrix, and the uniformity of the distribution of bubbles or porous materials is difficult to guarantee. SUMMARY

[0007] The purpose of the present application is to provide a device and method for preparing monodisperse emulsion explosive and monodisperse emulsion explosive to solve the above problems.

[0008] To achieve the above purpose, the following technical solutions are adopted in the present application:

[0009] A device for preparing monodisperse emulsion explosive, comprising:

[0010] A raw material supply unit comprising an oil phase feeding device for providing an oil phase, a water phase feeding device for providing a water phase, and a sensitizing material feeding device for providing a sensitizing material;

[0011] A laminar flow emulsification unit provided with a micron-level laminar flow emulsification channel for emulsifying the oil phase and the water phase to obtain a mixture;

[0012] A material separation unit for separating a monodisperse water-in-oil latex matrix and an oil phase separation from the mixture by a non-contact external force field;

[0013] A sensitization and reinforcement mixing unit for uniformly distributing the sensitizing material in the monodisperse water-in-oil latex matrix to obtain the monodisperse emulsion explosive;

[0014] The oil phase feeding device and the water phase feeding device are in communication with the inlet of the laminar flow emulsification unit, and the outlet of the laminar flow emulsification unit is in sequence communication with the material separation unit and the sensitization and reinforcement mixing unit.

[0015] Preferably, the width of the laminar flow emulsification channel is 1-100 μm.

[0016] Optionally, the width of the laminar flow emulsification channel can be 1 μm, 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm or any value between 1-100 μm.

[0017] Preferably, the laminar flow emulsification channel comprises one or more of T-shaped, cross-shaped, Y-shaped, coaxial flow structure.

[0018] Preferably, the non-contact external force field comprises one or more of an electric field, a magnetic field.

[0019] Preferably, the sensitization and reinforcement mixing unit has a U-shaped channel, a back-shaped channel or a mosquito-repellent disc-shaped channel.

[0020] Preferably, the device for preparing monodisperse emulsion explosive further comprises an emulsion explosive collecting unit.

[0021] It should be noted that the device provided by the present application can be mass-produced in a repeated parallel manner.

[0022] The present application further provides a method for preparing monodisperse emulsion explosive, which is prepared by using the device for preparing monodisperse emulsion explosive, and the method comprises the following steps:

[0023] The oil phase provided by the oil phase feeding device and the water phase provided by the water phase feeding device are mixed and emulsified in the laminar flow emulsification unit to obtain the mixture;

[0024] The mixture is separated by the material separation unit to obtain the monodisperse water-in-oil emulsion matrix and the oil phase separation product, and the oil phase separation product is recycled between the oil phase feeding device and the laminar flow emulsification unit;

[0025] The monodisperse water-in-oil emulsion matrix and the sensitization material from the sensitization material feeding device are mixed in the sensitization and reinforcement mixing unit to uniformly distribute the sensitization material in the monodisperse water-in-oil emulsion matrix to obtain the monodisperse emulsion explosive.

[0026] Preferably, the oil phase comprises a reducing agent and an emulsifier, and the water phase comprises an oxidizing agent aqueous solution.

[0027] Preferably, the sensitization material comprises chemical sensitization material, physical sensitization material and gas sensitization material.

[0028] The chemical sensitization material comprises sodium nitrite and an acid, and the acid comprises acetic acid and / or citric acid.

[0029] The physical sensitization material comprises porous material, and the porous material comprises porous perlite and / or hollow glass microsphere.

[0030] The gas sensitization material comprises one or more of air, carbon dioxide, hydrogen and nitrogen.

[0031] The sensitization of emulsion explosive is to make voids in the emulsion matrix, so as to form hot spots to initiate the explosive under impact compression. The existing technology introduces voids in the form of chemical sensitization or physical addition. On this basis, the present application can directly inject gas to realize the fine adjustment of the function of the explosive. For example, the filling of flammable gas H2 can increase the energy of the explosive, the filling of O2 can further adjust the oxygen balance, and the filling of air can reduce the cost.

[0032] Preferably, the sensitization material is a gas sensitization material;

[0033] The flow rate of the gas sensitization material satisfies the following condition:

[0034]

[0035]

[0036]

[0037] wherein, the density of the emulsion matrix is ρ0, the density of the emulsion explosive is ρ1, the density of the water phase is ρ 水 , the density of the oil phase is ρ 油 , the density of the sensitization gas is ρ 气 , the flow rate of the water phase is U 水 , the flow rate of the oil phase is U 油 , the flow rate of the sensitization gas is U 气 , and the unit of time is t.

[0038] The present application also provides a monodisperse emulsion explosive prepared by the method.

[0039] Compared with the prior art, the present application has the following beneficial effects:

[0040] The device and method for preparing monodisperse emulsion explosive provided by the application can generate turbulence to emulsify water and oil phases through a millimeter-level gap compared to traditional preparation techniques, a micron-level laminar flow emulsification channel is arranged, and the micron-level channel is used to emulsify water and oil phases in a laminar flow mode by using microfluidic technology, so that droplets of the emulsion matrix liquid with uniform particle size can be prepared, the monodisperse emulsion matrix liquid can weaken the liquid discharge effect between oil films, reduce the polymerization probability between droplets, reduce the crystallization demulsification between droplets, and thus improve the stability of the emulsion explosive. Meanwhile, the scale in the production process of the emulsion matrix prepared by the application is much smaller than the critical diameter of the explosion of the explosive, and the preparation does not require strong shearing action, so the application has intrinsic safety. The emulsion matrix liquid droplets and the oil phase can be separated and screened through the material separation unit, the emulsion matrix is a water-in-oil emulsion, the internal water phase is a polar oxidant aqueous solution, and the oil phase is a non-polar material, so that the flow of the emulsion matrix liquid droplets in the pipeline can be deviated by applying a non-contact external force field, so as to realize the separation and screening of the emulsion matrix liquid droplets and the oil phase material. The sensitization mode of injecting the sensitization material through the micron-level pipeline greatly improves the mixing precision and uniformity compared to the existing stirring type sensitization. In addition, by controlling the addition amount and addition time of the sensitization material, the density and void distribution of the emulsion explosive can be adjusted.

[0041] The device and method for preparing monodisperse emulsion explosive provided by the application can freely control the finished product density of the final emulsion explosive and reduce the cost; in addition, the explosive detonation velocity can be adjusted by adjusting the types of raw materials. BRIEF DESCRIPTION OF DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation on the scope of the application.

[0043] Figure 1 The schematic diagram of the device for preparing monodisperse emulsion explosive provided by the embodiments of the application;

[0044] Figure 2 The flowchart schematic diagram of the method for preparing monodisperse emulsion explosive provided by the embodiments of the application;

[0045] Figure 3 The structural schematic diagram of the laminar flow emulsification channel;

[0046] Figure 4 The structural schematic diagram of the sensitization and reinforcement mixing unit;

[0047] Figure 5 The microscope photograph of the emulsion explosive prepared in Embodiment 3;

[0048] Figure 6Microscopic photograph of the emulsion explosive prepared in Example 4;

[0049] Figure 7 Microscopic photograph of the emulsion explosive prepared in Example 5;

[0050] Figure 8 Microscopic photograph of the emulsion explosive prepared in Example 6;

[0051] Figure 9 Microscopic photograph of the emulsion explosive prepared in Comparative Example 1;

[0052] Figure 10 The particle size distribution diagram is shown for the emulsion explosive prepared in Comparative Example 1.

[0053] Figure 11 These are microscopic comparison photographs of the emulsion explosives prepared in Example 3 and Comparative Example 2 of this application, after being stored at room temperature for 7 days.

[0054] Figure label:

[0055] 1-Aqueous phase feeding device; 2-Oil phase feeding device; 3-Laminar flow emulsification unit; 4-Material separation unit; 5-Sensitizing material feeding device; 6-Sensitization enhancement mixing unit; 7-Emulsion explosive collection unit; 8-Pipeline; 101-Aqueous phase inlet; 102-Oil phase inlet; 201-Sensitization inlet; 202-Sensitization outlet. Detailed Implementation

[0056] The implementation schemes of this application will be described in detail below with reference to specific embodiments. However, those skilled in the art will understand that the following embodiments are only for illustrating this application and should not be regarded as limiting the scope of this application. Unless otherwise specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall apply. Reagents or instruments used without specified manufacturers are all conventional products that can be purchased commercially.

[0057] Example 1

[0058] like Figure 1 As shown, this embodiment provides an apparatus for preparing monodisperse emulsion explosives, comprising:

[0059] The raw material supply unit includes an aqueous phase feed device 1 for providing the aqueous phase, an oil phase feed device 2 for providing the oil phase, a laminar emulsification unit 3, and a material separation unit 4. The laminar emulsification unit 3 is provided with a cross-shaped laminar emulsification channel with a width of 10 μm, for emulsifying the oil phase and the aqueous phase to obtain a mixture; the material separation unit 4 is used to separate the monodisperse water-in-oil latex matrix and the oil phase separator from the mixture by means of an electric field (20V / cm).

[0060] It can be understood that the raw material supply unit includes a storage device, a feeding pump and other facilities.

[0061] The raw material supply unit further comprises a sensitizing material feeding device 5 for providing a sensitizing material.

[0062] The device further comprises a sensitizing and reinforcing mixing unit 6 and an emulsion explosive collecting unit 7; the sensitizing and reinforcing mixing unit 6 is used for uniformly distributing the sensitizing material in the emulsion explosive; the emulsion explosive collecting unit 7 is used for collecting the monodisperse emulsion explosive from the sensitizing and reinforcing mixing unit 6.

[0063] The water phase feeding device 1 and the oil phase feeding device 2 are communicated with the inlet of the laminar flow emulsification unit 3, and the outlet of the laminar flow emulsification unit 3 is sequentially communicated with the material separation unit 4, the sensitizing and reinforcing mixing unit 6 and the emulsion explosive collecting unit 7.

[0064] Embodiment 2

[0065] The embodiment provides a device for preparing monodisperse emulsion explosive, comprising:

[0066] A raw material supply unit, which comprises a water phase feeding device 1 for providing a water phase, an oil phase feeding device 2 for providing an oil phase, and a laminar flow emulsification unit 3 and a material separation unit 4; the laminar flow emulsification unit 3 is provided with a Y-shaped laminar flow emulsification channel with a width of 100 μm, which is used for emulsifying the oil phase and the water phase to obtain a mixture; the material separation unit 4 is used for separating the monodisperse water-in-oil emulsion matrix and the oil phase separation from the mixture by the action of a magnetic field (1.5*10 4 A / m).

[0067] The raw material supply unit further comprises a sensitizing material feeding device 5 for providing a sensitizing material.

[0068] The device further comprises a sensitizing and reinforcing mixing unit 6 and an emulsion explosive collecting unit 7; the sensitizing and reinforcing mixing unit 6 is used for reinforcing the sensitizing to obtain the monodisperse emulsion explosive; the emulsion explosive collecting unit 7 is used for collecting the monodisperse emulsion explosive from the sensitizing and reinforcing mixing unit 6.

[0069] The water phase feeding device 1 and the oil phase feeding device 2 are communicated with the inlet of the laminar flow emulsification unit 3, and the outlet of the laminar flow emulsification unit 3 is sequentially communicated with the material separation unit 4, the sensitizing and reinforcing mixing unit 6 and the emulsion explosive collecting unit 7.

[0070] Referring to Figure 3 In other embodiments, the laminar flow emulsification channel can also be a cross-shaped or coaxial flow structure. Wherein 101 is the water phase inlet, and 102 is the oil phase inlet.

[0071] It should be noted that the sensitizing and reinforcing mixing unit 6 has a U-shaped channel, a H-shaped channel or a mosquito coil-shaped channel. Specifically, as shown inFigure 4 As shown in the figure, 201 is the sensitization inlet, and 202 is the sensitization outlet.

[0072] Embodiment 3

[0073] As shown in the figure, this embodiment provides a method for preparing monodisperse emulsion explosive, which is prepared by using the device provided in Embodiment 1, and specifically includes the following steps: Figure 2

[0074] 1. The water phase provided by the water phase feeding device 1 and the oil phase provided by the oil phase feeding device 2 are mixed and emulsified in the laminar flow emulsification unit 3 to obtain a mixture; the oil phase includes a reducing agent and an emulsifier, and the water phase includes an oxidizing agent aqueous solution;

[0075] The oil phase is diesel oil, 5%, and the emulsifier is Span 80, 2%; the water phase is: ammonium nitrate, 69.5%, water, 17%, and sodium nitrate, 6.5% (all are mass fractions).

[0076] The water phase flow rate is 2 μl / min, the oil phase flow rate is 2 μl / min, and the generated liquid droplet diameter is 10 μm.

[0077] In other embodiments, the oil phase can be one or more of mineral oil, diesel oil, and engine oil, the emulsifier can be Span 80 or high molecular polyisobutylene succinic anhydride, and the water phase is an aqueous solution composed of one or more of ammonium nitrate, sodium nitrate, potassium nitrate, calcium nitrate, and urea. Among them, the oil phase addition amount is 4%-6%, the emulsifier addition amount is 1%-3%, the water phase addition amount is 92%-94%, and when the sensitization mode is chemical sensitization, the sensitization agent addition amount is between 1%-2%.

[0078] It should be noted that when the sensitization mode is gas injection, the various parameter indicators need to meet the following conditions:

[0079]

[0080]

[0081] Among them, the density of the emulsion matrix is ρ0, the density of the emulsion explosive is ρ1, the density of the water phase is ρw, the density of the oil phase is ρo, the density of the sensitization gas is ρg, the water phase flow rate is Uw, the oil phase flow rate is Uo, the sensitization gas flow rate is Ug, and the unit time is t. 水 油 气 水 油 气

[0082] Since the density of the sensitization gas is very small and can be approximated to zero, we have:

[0083]

[0084] ​​​​​​​2. The mixture is separated by the material separation unit 4 to obtain a monodisperse water-in-oil emulsion matrix and an oil phase separation, which is recycled through the pipeline 8 to return to the oil phase feeding device 2 and circulate between the laminar flow emulsification unit 3;

[0085] 3. The monodisperse water-in-oil emulsion matrix is strengthened and sensitized with the sensitizing material from the sensitizing material feeding device 5 in the sensitizing and strengthening mixing unit 6 to obtain a monodisperse emulsion explosive. The sensitizing material is air, and the flow rate is 1.4 μl / min, and the emulsion explosive with a density of 1 g / cm 3 Figure 5

[0086] Example 4

[0087] The difference from Example 3 is that:

[0088] The emulsification unit is a Y-shaped laminar flow emulsification channel with an angle of 60° and a width of 10 μm, wherein the flow rate of the water phase is 2 μl / min, the flow rate of the oil phase is 2 μl / min, and the generated droplet diameter is 10 μm. The sensitizing gas is nitrogen, and the flow rate is 0.9 μl / min, and the emulsion explosive with a density of 1.1 g / cm 3

[0089] The physical diagram of the obtained monodisperse emulsion explosive is shown in Figure 6

[0090] Example 5

[0091] The difference from Example 3 is that:

[0092] The emulsification unit is a cross-shaped laminar flow emulsification channel with a width of 10 μm, wherein the flow rate of the water phase is 4 μl / min, the flow rate of the oil phase is 2 μl / min, and the generated droplet diameter is 30 μm. The sensitizing gas is hydrogen, and the flow rate is 0.75 μl / min, and the emulsion explosive with a density of 1.2 g / cm 3

[0093] The physical diagram of the obtained monodisperse emulsion explosive is shown in Figure 7

[0094] Example 6

[0095] The difference from Example 3 is that:

[0096] The emulsification unit is a T-shaped laminar flow emulsification channel with a width of 10 μm, wherein the flow rate of the water phase is 7 μl / min, the flow rate of the oil phase is 2 μl / min, and the generated droplet diameter is 40 μm. The sensitizing gas is oxygen, and the flow rate is 4.5 μl / min, and the emulsion explosive with a density of 0.9 g / cm 3

[0097] The physical diagram of the obtained monodisperse emulsion explosive is shown in​​​​​​​Figure 8 As shown.

[0098] Example 7

[0099] Different from Example 3, the sensitizing material is a physical sensitizing material, which is porous perlite.

[0100] In other embodiments, the physical sensitizing material can be hollow glass beads.

[0101] Example 8

[0102] Different from Example 3, the sensitizing material is a physical sensitizing material, which is porous perlite.

[0103] The explosive formula is: diesel oil as the oil phase, 5.5%, high molecular emulsifier as the emulsifier, 1.5%, ammonium nitrate, 69%, water, 17%, sodium nitrate, 6.5%, citric acid, 0.5%. The sensitizing liquid is sodium nitrite solution, with an additional 1%.

[0104] In other embodiments, the sensitizing material can also include acetic acid.

[0105] In other embodiments, the acetic acid can be replaced by citric acid.

[0106] Comparative Example 1

[0107] The particle size of the emulsion matrix prepared by stirring is polydisperse, and the micrograph is as shown in Figure 9 The particle size distribution is as shown in Figure 10 .

[0108] The water-in-oil droplets prepared by the present application are monodisperse, with uniform particle size, reducing the aggregation between droplets, thereby improving the storage performance of the emulsion explosive.

[0109] For example, the particle size distribution data of the emulsion explosive obtained in Example 3 is shown in Table 1 below:

[0110] Table 1 Particle size distribution data of the emulsion explosive obtained in Example 3

[0111] Particle size Percentage / % 9.008 6.59 9.4605 22.64 9.964 39.21 10.524 28.23 11.1475 3.33

[0112] As can be seen from Figure 10 and Table 1, the emulsion explosive prepared by the device and method provided by the present application has a narrower particle size distribution.

[0113] Comparative Example 2

[0114] The emulsion explosives prepared by the traditional stirring method and the emulsion explosives prepared by the present application were compared in terms of normal temperature daily storage for 7 days, and then observed under a microscope. The comparison chart is as shown in Figure 11The photos of the emulsion explosive prepared by the traditional stirring method (the left photo is the photo of the emulsion explosive prepared by the embodiment of the present application, and the right photo is the photo of the emulsion explosive prepared by the traditional stirring method).

[0115] The emulsion explosive prepared by the traditional stirring method has appeared crystallization between the droplets, and the stability is greatly reduced, thereby leading to the reduction of the explosive performance. The particle size between the droplets prepared by the present application has little change, and the stability is good.

[0116] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An apparatus for preparing monodisperse emulsion explosives, characterized in that, include: The raw material supply unit includes an oil phase feed device for providing the oil phase, an aqueous phase feed device for providing the aqueous phase, and a sensitizing material feed device for providing the sensitizing material. The laminar emulsification unit is equipped with micron-level laminar emulsification channels for emulsifying the oil phase and the aqueous phase to obtain a mixture. A material separation unit is used to separate a monodisperse water-in-oil emulsion matrix and an oil phase from the mixture using a non-contact external force field; a sensitization-enhanced mixing unit is used to uniformly distribute the sensitizing material in the monodisperse water-in-oil emulsion matrix to obtain the monodisperse emulsion explosive; the non-contact external force field includes one or more of electric and magnetic fields. The oil phase feed device and the aqueous phase feed device are connected to the inlet of the laminar flow emulsification unit, and the outlet of the laminar flow emulsification unit is sequentially connected to the material separation unit and the sensitization and strengthening mixing unit.

2. The apparatus for preparing monodisperse emulsion explosives according to claim 1, characterized in that, The width of the laminar emulsification channel is 1-100 μm.

3. The apparatus for preparing monodisperse emulsion explosives according to claim 1, characterized in that, The laminar emulsification channel includes one or more of the following: T-shaped, cross-shaped, Y-shaped, and coaxial flow structures.

4. The apparatus for preparing monodisperse emulsion explosives according to claim 1, characterized in that, The sensitization and enhancement mixing unit has a U-shaped channel, a U-shaped channel, or a mosquito coil-shaped channel.

5. The apparatus for preparing monodisperse emulsion explosives according to any one of claims 1-4, characterized in that, It also includes an emulsion explosive collection unit.

6. A method for preparing monodisperse emulsion explosives, characterized in that, The preparation is carried out using the apparatus for preparing monodisperse emulsion explosives according to any one of claims 1-5, and the method comprises: The oil phase provided by the oil phase feeding device and the water phase provided by the water phase feeding device are mixed and emulsified in the laminar emulsification unit to obtain the mixture. The mixture is separated by the material separation unit to obtain the monodisperse water-in-oil latex matrix and the oil phase separation product. The oil phase separation product is returned to the oil phase feed device and the laminar emulsification unit for recycling. The monodisperse water-in-oil emulsion matrix and the sensitizing material from the sensitizing material feeding device are passed through the sensitization strengthening mixing unit to uniformly distribute the sensitizing material in the monodisperse water-in-oil emulsion matrix to obtain the monodisperse emulsion explosive.

7. The method for preparing monodisperse emulsion explosives according to claim 6, characterized in that, The oil phase includes a reducing agent and an emulsifier, and the aqueous phase includes an aqueous solution of an oxidizing agent.

8. The method for preparing monodisperse emulsion explosives according to claim 6, characterized in that, The sensitizing materials include chemical sensitizing materials, physical sensitizing materials, and gas sensitizing materials; The chemical sensitizing material includes sodium nitrite and an acid, wherein the acid includes acetic acid and / or citric acid; The physical sensitizing material includes porous materials, which include porous perlite and / or hollow glass microspheres; The gas sensitizing material includes one or more of air, carbon dioxide, hydrogen, and nitrogen.

9. The method for preparing monodisperse emulsion explosives according to claim 6, characterized in that, The sensitizing material is a gas sensitizing material; The flow rate of the gas sensitizing material satisfies the following condition: ； ； ； Among them, latex matrix density ρ 0, density of emulsion explosive ρ 1. Aqueous phase density ρ 水 oil phase density ρ 油 sensitizing gas density ρ 气 water phase flow rate U 水 Oil phase flow rate U 油 Sensitizing gas flow rate U 气 Unit time t .

10. A monodisperse emulsion explosive, characterized in that, It is prepared using the method for preparing monodisperse emulsion explosives according to any one of claims 7-9.

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