M-type emulsion explosive multistage jet static emulsifier

Abstract

The application discloses a kind of M type emulsion explosive multistage jet static emulsifier, by SK type static mixing pipe (1), SK type static mixing unit (2), first jet orifice plate (3), jet emulsion pipe (4), forward helical blade (5), second jet orifice plate (6), diaphragm pressure gauge (7), reverse helical blade (8), SV type homogenization mixing pipe (9), SV type homogenization mixing unit (10), pressure relief pipe (11) combination constitutes;Jet emulsion pipe (4) is two sections, first jet orifice plate (3), second jet orifice plate (6) are located respectively in the import of each section of jet emulsion pipe (4), forward helical blade (5), reverse helical blade (8) are respectively built-in in the export of each section of jet emulsion pipe (4).The application mixes forward, reverse mixing, jet shear, impact collision in one, with constant working pressure, emulsification quality is stable, production line safety is high, emulsification effect is good and the characteristics that product performance index is excellent.

Description

Technical Field

[0001] The invention belongs to the technical field of emulsion explosive production, and in particular relates to a jet static emulsification device for emulsion explosive production. The device is particularly suitable for use on an M-type emulsion explosive production line and is also suitable for producing powdered emulsion explosive. Background Art

[0002] Emulsion explosives are a type of water-containing explosive. They use the action of emulsifiers to evenly disperse droplets of aqueous oxidizer salt solutions in an oil-phase continuous medium containing porous substances such as dispersed bubbles or hollow glass microspheres, forming an oil-in-water emulsion explosive. They are a new type of industrial explosive developed in the 1970s.

[0003] In the field of industrial explosives, emulsion explosives are widely used in various blasting operations due to their excellent water resistance, high explosive power, and long shelf life. Emulsification technology is key to the production of emulsion explosives. Various performance indicators of emulsion explosives, such as detonation velocity, explosive force, shelf life, and water resistance, are all related to the emulsification effect and are a direct factor in determining the quality of emulsion explosives.

[0004] Currently, the emulsification processes used in my country's emulsion explosives production lines include emulsification in an emulsifier, pre-emulsification with static emulsification, and pipeline static emulsification. The emulsification in an emulsifier presents safety risks, while the pre-emulsification with static emulsification process requires an additional pre-emulsification and pumping step. The quality of pipeline static emulsification products is unstable.

[0005] To improve the emulsification effect of emulsion explosive production lines, Chinese patent application 201610722382.8 discloses an emulsion explosive jet emulsification device and emulsification method. The device comprises a body, an oil phase feed port, a jet assembly, a water phase feed port, and a discharge port disposed thereon. While this device boasts advantages such as simple design, safety, continuous emulsification, and high mixing efficiency, its primary function is mixing, resulting in unsatisfactory emulsification results. Summary of the Invention

[0006] The purpose of the present invention is to address the above-mentioned problems existing in the production process of the existing emulsion explosive production line, closely combining the characteristics of the M-type emulsion explosive production line, which has high production process temperature and large production capacity, and provide an M-type emulsion explosive multi-stage jet static emulsifier with good emulsification effect, high production capacity and good product quality stability.

[0007] To achieve the above-mentioned purpose of the present invention, the present invention adopts the following technical solutions for a multi-stage jet static emulsifier for M-type emulsion explosive:

[0008] The present invention relates to an M-type emulsion explosive multi-stage jet static emulsifier, which is composed of an SK-type static mixing tube, an SK-type static mixing unit, a first jet porous plate, a jet emulsification tube, a forward spiral blade, a second jet porous plate, a diaphragm pressure gauge, a reverse spiral blade, an SV-type uniform emulsification mixing tube, an SV-type uniform emulsification mixing unit, and a pressure relief tube. The number of the SK-type static mixing units is 5 to 20, preferably 8 to 16, and they are continuously connected and built into the SK-type static mixing tube. The SK-type static mixing tube is connected to the jet emulsification tube and is connected by a flange. The jet emulsification tube is composed of two sections of connection combination, and the first jet porous plate and the second jet porous plate are respectively located at the jet emulsification tube and the second jet porous plate. At the inlet of each section of the flow emulsification tube, the forward spiral blades and the reverse spiral blades are respectively built into the outlet of each section of the jet emulsification tube and welded to the jet emulsification tube; the diaphragm pressure gauge is connected to the jet emulsification tube with a threaded connection, and the working pressure is controlled between 0.3 and 1.2 MPa. The pressure gauge is directly installed on the pipeline to display the pressure of this section of the pipeline so as to adjust the pressure drop and balance the emulsification effect of each section of the emulsification tube; the outlet of the jet emulsification tube is connected to the SV type emulsification mixing tube by a flange; the number of the SV type emulsification mixing units is 5 to 20, and 8 to 16 are preferred, and they are continuously connected and built into the SV type emulsification mixing tube; the SV type emulsification mixing tube is connected to the pressure relief tube by a flange.

[0009] Furthermore, the diameter of the SK type static mixing tube is Φ32-110 mm, and the length is 500-1000 mm.

[0010] Furthermore, the SK-type static mixing unit is welded together by single spiral sheets twisted left and right. Its main function is to mix the oil and water phase materials together to provide a uniform mixed liquid for emulsification. The twisting angles are 180° and 270° respectively. The length of a single SK-type static mixing unit is 30 to 100 mm.

[0011] Furthermore, the outer diameter of the first jet porous plate / the second jet porous plate is 40 to 110 mm, the number of jet holes on the first jet porous plate / the second jet porous plate is 50 to 300, the diameter of the jet holes is 1.0 to 10.0 mm, preferably 2 to 4 mm; the hole spacing between adjacent jet holes is preferably in the range of 2 to 10 mm, preferably 4 to 8 mm; the size and number of the jet holes on the jet plate are determined according to the flow rate of the mixed liquid and the pressure required for emulsification of the oil-water phase material, and at the same time, holes of different sizes are designed according to the fluidity of the mixed liquid to balance the pressure drop in each section and ensure the uniformity of emulsification.

[0012] Furthermore, the number of jet holes on the first jet porous plate / the second jet porous plate is 50 to 300.

[0013] Furthermore, the SV-type homogenizing mixing tube has a diameter of Φ32 to 110 mm and a length of 500 to 1000 mm. The SV-type homogenizing mixing unit is assembled from corrugated sheets rolled from metal plates. The length of a single SV-type homogenizing mixing unit is 30 to 100 mm. Adjacent mixing units are installed at a certain angle, so that the emulsified matrix flows in different directions on multiple parallel planes, causing the emulsified matrix to collide and shear during the flow process, thereby achieving the purpose of re-emulsification and homogenization.

[0014] Furthermore, the pressure relief tube is a hollow tube with a large cross section. The emulsified matrix has a certain pressure after passing through the homogenizing mixing tube. After entering the pressure relief tube, the flow area is suddenly enlarged, which can reduce the fluid velocity and improve production safety.

[0015] The M-type emulsion explosive multi-stage jet static emulsifier of the present invention adopts the above technical solution, has the characteristics of constant working pressure, stable emulsification quality, and high production line safety, and specifically has the following beneficial effects:

[0016] (1) For the first time, it integrates the functions of SK type static mixing, multi-stage jet emulsification and SV type homogeneous emulsion mixing into one, and combines forward mixing, reverse mixing, jet shearing and impact collision into one, which greatly improves the explosive emulsification effect and product performance indicators.

[0017] (2) The use of SK type static mixer can premix water and oil phase materials, which is conducive to uniform emulsification.

[0018] (3) The use of a multi-stage jet emulsification tube is conducive to the water-oil phase materials to produce strong shear and collision under the action of high-energy jet fluid, thereby achieving the purpose of rapid and strong emulsification.

[0019] (4) The use of forward spiral units and reverse spiral units can mix the emulsion multiple times, making the emulsification more uniform.

[0020] (5) The SV type static mixing emulsification tube is used to make the emulsified fluid flow in opposite directions on multiple parallel surfaces, so that the emulsified fluids impact each other in the tube, achieving the purpose of strong shearing and fine emulsification, which is conducive to the mutual shearing, collision and mixing of the emulsified matrix to form a uniform and stable emulsified matrix.

[0021] (6) The use of a large-section pressure relief pipe is conducive to releasing excess pressure, allowing the outlet matrix to flow stably at a low speed, and improving the inherent safety of the production line.

[0022] (7) The use of diaphragm pressure gauge is conducive to accurately displaying the pipeline pressure, so as to facilitate the adjustment of the pressure drop at each level and make the emulsification pressure distribution at each level more reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1The structure connection diagram of the M-type multi-stage jet static emulsifier for emulsion explosive.

[0024] Figure 2 The jet orifice plate cross section enlarged view adopted by the present application.

[0025] Figure 3 is Figure 2 The I section enlarged view.

[0026] Reference signs: 1-SK type static mixing pipe, 2-SK type static mixing unit, 3-first jet orifice plate, 4-jet emulsification pipe, 5-forward spiral unit, 6-second jet orifice plate, 7-diaphragm pressure gauge, 8-reverse spiral unit, 9-SV type homogenization mixing pipe, 10-SV type homogenization mixing unit, 11-pressure release pipe. DETAILED DESCRIPTION

[0027] In order to better describe the present application, the M-type multi-stage jet static emulsifier for emulsion explosive is further described in detail below in combination with the drawings and examples.

[0028] The structure connection diagram of the M-type multi-stage jet static emulsifier for emulsion explosive shown by Figure 1 , Figure 2 , Figure 3It can be seen that in the embodiment, the present invention is an M-type emulsion explosive multi-stage jet static emulsifier, which is composed of an SK type static mixing tube 1, an SK type static mixing unit 2, a first jet porous plate 3, a jet emulsification tube 4, a forward spiral blade 5, a second jet porous plate 6, a diaphragm pressure gauge 7, a reverse spiral blade 8, an SV type uniform emulsification mixing tube 9, an SV type uniform emulsification mixing unit 10, and a pressure relief tube 11 connected in combination; the SK type static mixing unit 2 is a single spiral sheet twisted 180° and 270°, and the SK type static mixing unit 2 is multiple and built-in in the SK type static mixing tube 1, the SK type static mixing tube 1 is connected to the jet emulsification tube 4, and a flange connection is adopted; the jet emulsification tube 4 is composed of a two-section connection combination, the first jet porous plate 3, the second jet The porous plates 6 are respectively located at the inlet of each section of the jet emulsification tube 4, and the forward spiral blades 5 and the reverse spiral blades 8 are respectively built into the outlet of each section of the jet emulsification tube 4 and welded to the jet emulsification tube 4. The diaphragm pressure gauge 7 is connected to the jet emulsification tube 4 with a threaded connection; the outlet of the jet emulsification tube 4 is connected to the SV type emulsification mixing tube 9 by a flange; the SV type emulsification mixing unit 10 is multiple and built into the SV type emulsification mixing tube 9. The SV type emulsification mixing unit 10 is rolled into a corrugated sheet from a metal plate, and the corrugated sheet is assembled according to the emulsification requirements. The channels formed by adjacent corrugated units are inclined in opposite directions and staggered at a certain angle, so that the emulsified fluid flows in opposite directions on multiple parallel surfaces, thereby causing the emulsified fluid to impact each other in the tube, achieving the purpose of strong shear emulsification. The SV type emulsification mixing tube 9 is connected to the pressure relief tube 11 by a flange.

[0029] In the embodiment, the specific parameters of the multi-stage jet static emulsifier for M-type emulsion explosive of the present invention are:

[0030] ①Emulsification pipeline diameter DN32~110mm;

[0031] ②Working pressure 0.3~1.2Mp;

[0032] ③Emulsification temperature 70~110℃;

[0033] ④ Jet hole specifications Φ1~10mm;

[0034] ⑤The number of jet holes is 50 to 300;

[0035] ⑥The number of jet plates is 1 to 5;

[0036] ⑦The number of mixing units is 5 to 20;

[0037] ⑧The number of milking units is 5 to 20;

[0038] ⑨Production capacity 2~10m 3 / h.

[0039] The process of the multi-stage jet static emulsifier for M-type emulsion explosive of the present invention is as follows:

[0040] S1 mixing: The water-oil phase material delivered from the water-oil phase delivery pump enters the SK type static mixing tube 1. Under the action of the multi-section SK type static mixing unit 2, the multi-directional fluids collide with each other, forming turbulence, so that the water-oil phase materials are mixed evenly.

[0041] S2 jet emulsification: The water-oil phase mixture flowing out of the SK type static mixing tube 1 forms a pressure drop at the first jet porous plate 3, generating a jet. The high-energy jet causes the water-oil phase mixture to rub, shear, and collide to form an emulsion. The emulsion is rotated and mixed under the action of the forward spiral unit 5; the emulsion flow forms a pressure drop at the second jet porous plate 6, generating a jet again. The emulsion is sheared, collided, and emulsified again to form a basically stable emulsified matrix, which is reversely impacted and mixed under the action of the reverse spiral unit 8.

[0042] S3 uniform emulsification: The emulsion that has been emulsified multiple times enters the SV type uniform emulsification mixing tube 9. Under the action of the SV type uniform emulsification mixing unit 10, the high-speed flowing emulsion flows in opposite directions on multiple parallel surfaces, so that the emulsified fluids impact each other in the tube, and the strong shearing is carried out for fine and uniform emulsification to form a high-quality emulsified matrix.

[0043] S4 pressure release: Due to the high pipeline delivery pressure, the emulsified matrix still has a certain spraying ability after the emulsification is completed. In order to improve the safety of the production line, the emulsified matrix enters the pressure relief pipe 11, and the excess pressure is released to form a stable colloid outflow.

[0044] S5 pressure detection: The diaphragm pressure gauge 7 is connected to the jet emulsification pipe 4 to display the pressure inside the jet emulsification pipe 4, providing a basis for adjusting the production capacity of emulsion explosives.

[0045] It should be noted that the orientations or positional relationships indicated by the terms "inside", "outside", "front", "back", "forward", "reverse", etc. in the present invention are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred parts or elements must have a specific orientation, be constructed and operated in a specific orientation. The "first" and "second" mentioned above are only for the convenience of description and distinction, and therefore cannot be understood as a limitation to the present invention.

[0046] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An M-type emulsion explosive multi-stage jet static emulsifier, characterized by: It is composed of an SK type static mixing tube (1), an SK type static mixing unit (2), a first jet porous plate (3), a jet emulsification tube (4), a forward spiral blade (5), a second jet porous plate (6), a diaphragm pressure gauge (7), a reverse spiral blade (8), an SV type homogeneous emulsification mixing tube (9), an SV type homogeneous emulsification mixing unit (10), and a pressure relief tube (11); the number of the SK type static mixing units (2) is 5 to 20, and they are continuously connected and built into the S In the K-type static mixing tube (1), the SK-type static mixing tube (1) is connected to the jet emulsification tube (4) by flange connection; the jet emulsification tube (4) is composed of two sections connected together, the first jet porous plate (3) and the second jet porous plate (6) are respectively located at the inlet of each section of the jet emulsification tube (4), the forward spiral blade (5) and the reverse spiral blade (8) are respectively built into the outlet of each section of the jet emulsification tube (4) and welded to the jet emulsification tube (4), and the diaphragm pressure gauge (7 ) is connected to the jet emulsification tube (4) by threaded connection, and the working pressure is controlled between 0.3 and 1.2 MPa; the outlet of the jet emulsification tube (4) is connected to the SV type emulsification mixing tube (9) by flange connection; the number of the SV type emulsification mixing units (10) is 5 to 20, and they are continuously connected and built into the SV type emulsification mixing tube (9); the SV type emulsification mixing tube (9) is connected to the pressure relief tube (11) by flange connection; the SK type static mixing unit (2) is twisted 180° and The single spiral blade has a 270° angle, and the length of a single SK type static mixing unit (2) is 30 to 100 mm; the diameter of the SV type homogenous emulsion mixing tube (9) is Φ32 to 110 mm, and the length is 500 to 1000 mm. The SV type homogenous emulsion mixing unit (10) is assembled from corrugated sheets rolled from metal plates. Adjacent SV type homogenous emulsion mixing units (10) are installed at a certain angle, and the length of a single SV type homogenous emulsion mixing unit (10) is 30 to 100 mm.

2. The M-type emulsion explosive multi-stage jet static emulsifier according to claim 1, characterized in that: The number of the SK type static mixing units (2) is 8 to 16; the number of the SV type homogenizing mixing units (10) is 8 to 16.

3. The M-type emulsion explosive multi-stage jet static emulsifier according to claim 1, characterized in that: The SK type static mixing tube (1) has a diameter of Φ32 to 110 mm and a length of 500 to 1000 mm.

4. The M-type emulsion explosive multi-stage jet static emulsifier according to claim 1, 2 or 3, characterized in that: The number of jet holes on the first jet porous plate (3) / the second jet porous plate (6) is 50 to 300.

5. The M-type emulsion explosive multi-stage jet static emulsifier according to claim 4, characterized in that: The hole spacing between adjacent jet holes on the first jet porous plate (3) / the second jet porous plate (6) is in the range of 2 to 10 mm.

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