Static emulsification milk production equipment and powdered emulsion explosive production line

Abstract

The present application relates to the technical field of emulsion explosive, and discloses a static emulsification device and a powdery emulsion explosive production line, the static emulsification device comprises: an initial emulsion core for introducing an oil phase; a double-layer outer cylinder inner layer spacing sleeve is arranged outside the initial emulsion core to form a water phase cavity; an outer layer spacing sleeve is arranged outside the water phase cavity to form a preheating cavity; a water distribution hole is arranged on the outer periphery of the double-layer outer cylinder inner layer and corresponds to the initial emulsion core; a spray hole plate is arranged between adjacent initial emulsion cores; an emulsification spray hole is arranged on the spray hole plate, and the mixed water phase and the oil phase flow through the emulsification spray hole; a water phase pump is used to provide power for the water phase, and an oil phase pump is used to provide power for the oil phase; the water phase is mixed with the oil phase through the water distribution hole to form an oil-rich matrix for spray powder production. The application cancels the matrix conveying pump, and only uses the oil phase pump and the water phase pump to produce spray powder, thereby providing a safe, reliable, stable, non-stirring and non-powered static emulsification device, which can be applied to the production of powdery emulsion explosive.

Description

Technical Field

[0001] This invention relates to the field of emulsion explosives technology, specifically to a static emulsion preparation equipment and a powdered emulsion explosive production line. Background Technology

[0002] A static emulsifier is a fully static emulsification device for explosives designed based on microfluidic emulsification technology. During the emulsification process, the latex matrix does not come into contact with the mechanical power unit, eliminating the need for a colloid pump and resulting in extremely low heat generation. This provides unparalleled safety characteristics compared to other types of emulsification equipment in the explosives production industry. Simultaneously, the static emulsifier can control the distribution of latex particles across different size ranges, reducing particle size and allowing the explosive to release its explosive energy more effectively, achieving excellent storage stability. Furthermore, by significantly reducing the microjets' intensity according to the requirements of explosives for latex particles, the static emulsifier further enhances production safety and reliability.

[0003] However, the above-mentioned static emulsifiers have limited applicability and are difficult to apply to the production of powdered emulsion explosives in order to reduce the dangers of powdered emulsion explosives in the production process and reduce energy consumption. Summary of the Invention

[0004] In view of this, the present invention provides a static emulsification equipment to solve the problem that the existing static emulsifiers have limited applicability and are difficult to apply to the production of powdered emulsion explosives, thereby reducing the danger and energy consumption of powdered emulsion explosives in the production process.

[0005] In a first aspect, the present invention provides a static emulsification milk-making apparatus, comprising: Multi-stage series-connected promulgation cores are suitable for introducing the oil phase through the oil phase inlet; The double-layered outer cylinder has an inner layer spaced outwards from the multi-stage primary emulsion cores, forming a water phase cavity; the outer layer of the double-layered outer cylinder is spaced outwards from the water phase cavity, forming a preheating cavity; the water phase cavity is adapted to introduce water phase through a water phase inlet; water distribution holes are provided on the outer periphery of the inner layer of the double-layered outer cylinder corresponding to each primary emulsion core; the preheating cavity is provided with a hot water inlet and a hot water outlet; the preheating cavity heats the water phase cavity and the primary emulsion cores through the circulating flow of hot water. A nozzle plate is disposed between adjacent primary emulsion cores; the nozzle plate is provided with multiple emulsion injection holes, through which the mixed aqueous phase and oil phase are sprayed and flowed along the multi-stage primary emulsion cores; The described static emulsification equipment is suitable for powering the aqueous phase with an aqueous phase pump and the oil phase with an oil phase pump, mixing and emulsifying the aqueous phase with the oil phase through the water separator to form an oil-rich matrix for spray powdering. Beneficial effects: This application adopts the above technical solution, eliminating the matrix delivery pump and using only external oil and aqueous phase pumps for spray powdering, providing a safe, reliable, stable, agitation-free, and power-free static emulsification equipment that can be applied to the production of powdered emulsion explosives.

[0006] Optionally, it also includes: At least one primary emulsion core or multiple primary emulsion cores connected in series are connected to the end of the primary emulsion cores via a flange structure; multiple emulsion jet holes are provided at the closed end of the primary emulsion core; a spray plate is provided at the flange structure. The static emulsification equipment is suitable for emulsifying the oil-rich matrix ejected from the terminal primary emulsion core through one or more stages of refined emulsion cores. The latex matrix ejected from the terminal refined emulsion core is then output from multiple jet holes in the refined emulsion orifice plate for spray powdering.

[0007] Optionally, a core sleeve is fitted over the core, and an outer cylinder is fitted over the core sleeve. Beneficial effects: The above technical solution provides a certain degree of protection for the core through the core sleeve and the outer cylinder.

[0008] Optionally, the oil phase is an emulsifier.

[0009] Optionally, the emulsifier is a polyisobutylene succinimide emulsifier or a composite emulsifier. Beneficial effects: This application, employing the above technical solution, fills the gap in existing static emulsifiers' inability to emulsify pure polymeric emulsifiers, achieving effective emulsification of polyisobutylene succinimide polymeric emulsifiers.

[0010] Optionally, the jet velocity range of the mixed aqueous phase and oil phase through the emulsification jet orifice is 1.0 m / s to 35.0 m / s; the flow velocity range of the aqueous phase through the water separation orifice is 0.5 m / s to 35.0 m / s; and the flow velocity range of the oil-rich matrix in the emulsion core is 0.5 m / s to 35.0 m / s.

[0011] Optionally, the oil phase is circulated multiple times to reach a set flow rate before entering the oil phase inlet; the aqueous phase is circulated multiple times to reach a set flow rate before entering the aqueous phase inlet. The oil phase enters the oil phase inlet before the water phase. Beneficial effect: This application employs the above technical solution to ensure stable flow of the oil and water phases.

[0012] Optionally, the concentration ratio of the aqueous phase to the oil phase is in the range of 97.5%:2.5% to 90%:10%.

[0013] Optionally, the number of stages of the promulgated core is 5 to 20.

[0014] Secondly, the present invention also provides a powdered emulsion explosive production line, comprising: the aforementioned static emulsification equipment. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a partial cross-sectional view of the static emulsification and emulsification equipment provided in an embodiment of the present invention. Figure 1 ; Figure 2 This is a side view of the promulgated core provided in an embodiment of the present invention. Figure 1 ; Figure 3 This is a schematic cross-sectional view of the primary emulsion core provided in an embodiment of the present invention. Figure 1 ; Figure 4 This is a side view of the promulgated core provided in an embodiment of the present invention. Figure 2 ; Figure 5 This is a schematic cross-sectional view of the primary emulsion core provided in an embodiment of the present invention. Figure 2 ; Figure 6 This is a side view of the emulsion core provided in an embodiment of the present invention. Figure 1 ; Figure 7 This is a cross-sectional view of the emulsion core provided in an embodiment of the present invention; Figure 8 This is a side view of the emulsion core provided in an embodiment of the present invention. Figure 2 .

[0017] Explanation of reference numerals in the attached figures: 1. Oil phase inlet; 2. Hot water inlet; 3. Double-layer outer cylinder; 4. Support leg; 5. Nameplate; 6. Water phase chamber; 7. Preheating chamber; 8. Water distribution hole; 9. Primary emulsion core; 10. Spray plate; 11. Fine emulsion outer cylinder; 12. Fine emulsion core sleeve; 13. Remote temperature interface; 14. Matrix outlet; 15. Fine emulsion orifice plate; 16. First PTFE gasket; 17. Fine emulsion core; 18. Hot water outlet; 19. First seal; 20. Second seal; 21. Pressure sensor interface; 22. Second PTFE gasket; 23. Sealing ring; 24. Third seal; 25. Barrier chamber; 26. Fourth seal; 27. Emulsion spray hole; 28. Water phase inlet; 29. ​​Manual flushing water inlet; 30. Fine emulsion jet hole. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figures 1 to 8 One specific embodiment of the static emulsification and milk-making equipment shown includes: a multi-stage series primary milk core 9, a double-layer outer cylinder 3, and a spray plate 10.

[0020] like Figure 1 As shown, the multi-stage series primary emulsion cores 9 are adapted to introduce the oil phase through the oil phase inlet 1. The inner layer of the double-layer outer cylinder 3 is spaced outside the multi-stage primary emulsion cores 9 to form a water phase cavity 6; the outer layer of the double-layer outer cylinder 3 is spaced outside the water phase cavity 6 to form a preheating cavity 7; the water phase cavity 6 is adapted to introduce the water phase through the water phase inlet 28. Water distribution holes 8 are provided on the outer periphery of the inner layer of the double-layer outer cylinder 3 corresponding to each primary emulsion core 9. The preheating cavity 7 is provided with a hot water inlet 2 and a hot water outlet 18. The preheating cavity 7 heats the water phase cavity 6 and the primary emulsion cores 9 through the circulating flow of hot water. The nozzle plate 10 is disposed between adjacent stages of primary emulsion cores 9; the nozzle plate 10 is provided with multiple emulsification injection holes 27, through which the mixed water phase and oil phase are sprayed along the multi-stage primary emulsion cores 9. The static emulsification equipment is suitable for powering the aqueous phase with an aqueous phase pump and the oil phase with an oil phase pump, mixing and emulsifying the aqueous phase with the oil phase through the water separation hole 8 to form an oil-rich matrix for spray powdering. The double-layer outer cylinder 3, the primary emulsion core 9, and the nozzle plate 10 constitute the primary emulsion section, also known as the coarse emulsion section. The emulsification spray hole 27 is also known as the oil phase dispersion hole. Each primary emulsion core 9 has a barrier chamber 25 inside.

[0021] Specifically, such as Figures 2 to 5 As shown, the water distribution hole 8 is a straight hole or an oblique hole; the emulsification spray hole 27 is a straight hole or an oblique hole; the multiple emulsification spray holes 27 are distributed around the center or biased to one side.

[0022] Specifically, such as Figure 1 As shown, a third sealing element 24 is provided between the primary emulsion core 9 and the double-layer outer cylinder 3; the third sealing element 24 can be a sealing ring; a fourth sealing element 26 can be provided between the nozzle plate 10 and the primary emulsion core 9.

[0023] like Figure 1 As shown, the static emulsification equipment of this application further includes: at least one primary emulsifying core 17 or multiple primary emulsifying cores 17 connected in series, the ends of which are connected to the primary emulsifying cores 9 via flange structures; multiple emulsifying jet holes 30 are provided at the closed end of the primary emulsifying core 17; and a spray orifice plate 10 is provided at the flange structure. The static emulsification equipment is suitable for emulsifying the oil-rich matrix sprayed from the primary emulsifying core 9 through the jets of one or more primary emulsifying cores 17, after which the latex matrix sprayed from the primary emulsifying core 17 is output from the multiple jet holes of the emulsifying orifice plate 15 for spray powdering. The emulsifying orifice plate 15 is located at the matrix outlet 14.

[0024] Specifically, such as Figures 6 to 8 As shown, the emulsion jet holes 30 are straight holes or oblique holes; the multiple emulsion jet holes 30 are distributed around the center or biased to one side.

[0025] Furthermore, the multi-stage series-connected emulsion cores 17 are detachably connected. Of course, the multi-stage series-connected emulsion cores 17 can be combined into a single unit.

[0026] Furthermore, such as Figure 1 As shown, a remote temperature interface 13 is led out from the cavity between the latex core 17 at the end and the latex orifice plate 15 at the end. The remote temperature interface 13 is adapted to obtain the temperature of the latex matrix. A pressure sensor interface 21 is led out from the latex core 17 at the beginning end. The pressure sensor interface 21 is adapted to obtain the pressure of the oil-rich matrix.

[0027] Specifically, such as Figure 1 As shown, a first PTFE gasket 16 is provided at the mounting location of the fine emulsion plate 15.

[0028] Furthermore, such as Figure 1 As shown, a fine emulsion core sleeve 12 is fitted outside the fine emulsion core 17, and a fine emulsion outer cylinder 11 is fitted outside the fine emulsion core sleeve 12; a sealing ring 23 is provided between the final stage primary emulsion core 9 and the flange structure. The fine emulsion core 17, the fine emulsion outer cylinder 11, and the fine emulsion core sleeve 12 constitute the fine emulsion part.

[0029] Specifically, a first sealing element 19 is provided between the emulsion core 17 and the emulsion core sleeve 12; a second sealing element 20 is provided between the emulsion core sleeve 12 and the emulsion outer cylinder 11; and a second PTFE gasket 22 is provided at the flange structure.

[0030] Specifically, the oil phase is an emulsifier. The emulsifier can be an emulsifier that does not contain polymeric emulsifiers.

[0031] More specifically, the emulsifier is a polyisobutylene succinimide emulsifier or a composite emulsifier. Polyisobutylene succinimide emulsifiers are polymeric emulsifiers. Composite emulsifiers are composite emulsifiers containing a certain amount of polymeric emulsifier.

[0032] Specifically, the jet velocity range of the mixed aqueous and oil phases through the emulsifying jet orifice 27 is 1.0 m / s to 35.0 m / s; the flow velocity range of the aqueous phase through the water separating orifice 8 is 0.5 m / s to 35.0 m / s; and the flow velocity range of the oil-rich matrix in the refined emulsion core 17 is 0.5 m / s to 35.0 m / s. The flow velocities of the mixed aqueous and oil phases in each primary emulsion core 9 can be the same or have a velocity gradient. The flow velocity of the oil-rich matrix in each refined emulsion core 17 can be the same or have a velocity gradient. The capacity of the static emulsification emulsification equipment described in this application is 0.2 t / h to 50 t / h. Emulsification is only related to the emulsifying jet velocity and is unrelated to the capacity.

[0033] Preferably, the jet velocity range of the mixed aqueous phase and oil phase through the emulsification jet hole 27 is 2 m / s to 35 m / s; the flow velocity range of the aqueous phase through the water separation hole 8 is 2 m / s to 20 m / s; and the flow velocity range of the oil-rich matrix in the emulsion core 17 is 2 m / s to 25 m / s.

[0034] For emulsion preparation of non-powder emulsion explosives, the core 17 should be of grade 2 or higher, and the flow velocity of the oil-rich matrix in the core 17 should be above 15 m / s.

[0035] More preferably, the jet velocity range of the mixed water phase and oil phase through the emulsification injection hole 27 is 3m / s to 30m / s; the flow velocity range of the water phase through the water separation hole 8 is 2m / s to 15m / s.

[0036] Specifically, the jet velocity range of the mixed water and oil phases through the emulsification injection hole 27 is 6 m / s to 15 m / s. Alternatively, the jet velocity range can be 8 m / s to 22 m / s. The flow velocity of the water phase through the water separation hole 8 is 13 m / s.

[0037] Furthermore, the oil phase enters the oil phase inlet 1 after being circulated multiple times to the set flow rate; the water phase enters the water phase inlet 28 after being circulated multiple times to the set flow rate; the oil phase enters the oil phase inlet 1 before the water phase.

[0038] Specifically, the oil phase enters the oil phase inlet 1 2s to 80s before the water phase.

[0039] Specifically, the concentration ratio of the aqueous phase to the oil phase ranges from 97.5%:2.5% to 90%:10%.

[0040] Preferably, the concentration ratio of the aqueous phase to the oil phase is 94%:6% or 94.6%:5.4%. The capacity of the static emulsification milk-making equipment is 7.2t / h or 6.5t / h.

[0041] Specifically, the number of stages of the promulgated core 9 is 5 to 20.

[0042] Correspondingly, the number of water distribution holes 8 is 5 to 20.

[0043] Preferably, the primary emulsion core has at least 8 levels.

[0044] More preferably, the primary emulsion core 9 has 10 stages. The secondary emulsion core 17 has 2 stages; the flow rate of the oil-rich matrix in the secondary emulsion core 17 is 15 m / s.

[0045] Specifically, such as Figure 1 As shown, support legs 4 are provided at the bottom of the double-layer outer cylinder 3 and the emulsion outer cylinder 11 to support the static emulsification and emulsification equipment; a nameplate 5 is installed on the outside of the double-layer outer cylinder 3; a manual flushing water inlet 29 is provided on the pipeline where the water phase inlet 28 is provided, and the manual flushing water inlet 29 is suitable for introducing clean water to flush the inside of the static emulsification and emulsification equipment.

[0046] A simplified description of the working process of the static emulsification equipment described in this application is as follows: When the aqueous phase and oil phase are heated to the process temperature, the aqueous phase pump is turned on for aqueous phase circulation, and the oil phase pump is turned on for oil phase circulation. When the flow rates of both reach the set values ​​and are stable, the oil phase is pumped into the static emulsification equipment first, and the aqueous phase is pumped into the static emulsification equipment 10 seconds later. The aqueous phase passes through the multi-stage water distribution holes 8 and impacts into the primary emulsion core 9, where it mixes with the oil phase. The mixture of aqueous and oil phases forms a high-speed rotating turbulent flow in the primary emulsion core 9, undergoing preliminary mixing to form an oil-rich matrix. The oil-rich matrix is ​​again impacted and accelerated by the aqueous phase flowing in through the water distribution holes 8 in the next stage of the primary emulsion core 9, forming a new oil-rich matrix. This process continues until, after 10 stages of jet emulsification, a latex matrix with a normal proportion is formed and sprayed out from the outlet. Afterward, it passes through the emulsification jet holes 30 on the emulsification core 17 of the fine emulsion stage for homogenization, deepening the degree of emulsification, and finally forming a qualified latex matrix. The delivery pressure for the aqueous phase was 1.81 MPa, the delivery pressure for the oil phase was 1.86 MPa, the emulsification pressure was 0.8 MPa, and the latex matrix density was 1.38 g / cm³. 3 .

[0047] Another working process of the static emulsification equipment described in this application is briefly described as follows: When the aqueous phase and oil phase are heated to the process temperature, the aqueous phase pump is turned on for aqueous phase circulation, and the oil phase pump is turned on for oil phase circulation. When the flow rates of both reach the set values ​​and are stable, the oil phase is pumped into the static emulsification equipment first, and the aqueous phase is pumped into the static emulsification equipment 16 seconds later. The aqueous phase passes through the multi-stage water distribution holes 8 and impacts into the primary emulsion core 9, where it mixes with the oil phase. The mixture of aqueous and oil phases forms a high-speed rotating turbulent flow in the primary emulsion core 9, undergoing preliminary mixing to form an oil-rich matrix. The oil-rich matrix is ​​again impacted and accelerated by the aqueous phase flowing in through the water distribution holes 8 in the next stage of the primary emulsion core 9, forming a new oil-rich matrix. This process continues until, after 10 stages of jet emulsification, a latex matrix with a normal ratio is formed and sprayed out from the outlet. The subsequent latex matrix is ​​then used by the power provided by the aqueous phase pump and the oil phase pump to form powdered emulsion explosive through spray pulverization. The aqueous phase delivery pressure was 2.11 MPa, the oil phase delivery pressure was 2.18 MPa, the emulsification pressure was 1.1 MPa, the spray powdering pressure was 0.53 MPa, and the latex matrix density was 1.35 g / cm³. 3 The bulk density of the powdered emulsion explosive is 0.66 g / cm³. 3 .

[0048] This application also proposes a powdered emulsion explosive production line, comprising: the aforementioned static emulsification equipment.

[0049] Specifically, the powdered emulsion explosive production line includes: a packaged emulsion explosive production line, an emulsion ammonium nitrate explosive production line, a ground station emulsion production line, and an on-site mixing vehicle emulsion production line.

[0050] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by this application.

Claims

1. A static emulsification and milk-making device, characterized in that, include: The multi-stage series-connected promulgated core (9) is suitable for introducing the oil phase through the oil phase inlet (1); A double-layered outer cylinder (3) is fitted with an inner layer spaced outside the multi-stage primary emulsion core (9) to form a water phase cavity (6); the outer layer of the double-layered outer cylinder (3) is fitted with an outer layer spaced outside the water phase cavity (6) to form a preheating cavity (7); the water phase cavity (6) is adapted to introduce water phase through a water phase inlet (28); water distribution holes (8) are provided on the outer periphery of the inner layer of the double-layered outer cylinder (3) corresponding to each primary emulsion core (9); the preheating cavity (7) is provided with a hot water inlet (2) and a hot water outlet (18); the preheating cavity (7) is heated by the circulation of hot water in the water phase cavity (6) and the primary emulsion core (9); A nozzle plate (10) is provided between the primary emulsion cores (9) of adjacent stages; multiple emulsion injection holes (27) are provided on the nozzle plate (10), and the mixed water phase and oil phase are sprayed and flowed along the multi-stage primary emulsion cores (9) through the emulsion injection holes (27); The static emulsification equipment is suitable for providing power to the aqueous phase via a water phase pump and to the oil phase via an oil phase pump, so that the aqueous phase is mixed and emulsified with the oil phase through the water separator (8) to form an oil-rich matrix for spray powdering.

2. The static emulsification and milk-making equipment according to claim 1, characterized in that, Also includes: At least one primary emulsion core (17) or multiple primary emulsion cores (17) connected in series are connected to the end of the primary emulsion core (9) via a flange structure; multiple emulsion jet holes (30) are provided at the closed end of the primary emulsion core (17); a spray plate (10) is provided at the flange structure. The static emulsification equipment is suitable for emulsifying the oil-rich matrix sprayed from the terminal primary emulsion core (9) through one or more stages of the fine emulsion core (17), and then outputting the latex matrix sprayed from the terminal fine emulsion core (17) from multiple jet holes of the fine emulsion orifice plate (15) for spray powdering.

3. The static emulsification and milk-making equipment according to claim 2, characterized in that, An emulsion core sleeve (12) is fitted outside the emulsion core (17), and an emulsion outer cylinder (11) is fitted outside the emulsion core sleeve (12).

4. The static emulsification and milk-making equipment according to any one of claims 1-3, characterized in that, The oil phase is an emulsifier.

5. The static emulsification and milk-making equipment according to claim 4, characterized in that, The emulsifier is a polyisobutylene succinimide emulsifier or a composite emulsifier.

6. The static emulsification and milk-making equipment according to claim 2 or 3, characterized in that, The jet velocity range of the mixed water phase and oil phase through the emulsification jet hole (27) is 1.0 m / s to 35.0 m / s; the flow velocity range of the water phase through the water separation hole (8) is 0.5 m / s to 35.0 m / s; and the flow velocity range of the oil-rich matrix in the emulsion core (17) is 0.5 m / s to 35.0 m / s.

7. The static emulsification and milk-making equipment according to any one of claims 1-3, characterized in that, The oil phase is circulated multiple times to the set flow rate before entering the oil phase inlet (1); the water phase is circulated multiple times to the set flow rate before entering the water phase inlet (28). The oil phase enters the oil phase inlet (1) before the water phase.

8. The static emulsification and milk-making equipment according to any one of claims 1-3, characterized in that, The concentration ratio of the aqueous phase to the oil phase is in the range of 97.5%:2.5% to 90%:10%.

9. The static emulsification and milk-making equipment according to claim 2, characterized in that, The number of stages of the promulgated core (9) is 5 to 20.

10. A production line for powdered emulsion explosives, characterized in that, include: The static emulsification and milk-making equipment according to any one of claims 1-9.

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