An industrial explosive waste matrix demulsification separation tank

Abstract

This utility model discloses an industrial explosive waste matrix demulsification and separation tank, belonging to the field of waste matrix treatment technology. It includes a frame and a separation tank body. The frame is fixedly installed on the top of the separation tank body. A drive motor is fixedly installed on the upper end of the frame. A stirring shaft is rotatably connected to the bottom of the drive motor via a reducer. The stirring shaft extends into the middle of the inner cavity of the separation tank body. An anchor-type stirrer and a paddle-type stirrer are fixedly installed on the stirring shaft. The anchor-type stirrer is located at the lower end of the paddle-type stirrer. A feed inlet is located on the upper surface of the separation tank body. A discharge pipe is opened at the bottom of the separation tank body, and a discharge valve is provided on the discharge pipe. A steam coil is installed inside the separation tank body. The steam inlet and outlet of the steam coil are both located on the outer wall of the separation tank, and the steam inlet is connected to an external steam source. The demulsification separation tank proposed in this utility model has a steam heating device and an automatic stirring device. Under high temperature conditions, mechanical stirring forces the waste matrix to demulsify. Then, the principle of liquid separation is used to separate the supersaturated ammonium nitrate solution with different densities and immiscible with the composite oil phase. Finally, the separated supersaturated ammonium nitrate solution and composite oil phase are collected for further processing. This is feasible and can solve the current problem of waste matrix treatment.

Description

Technical Field

[0001] This utility model relates to a demulsification and separation tank for industrial explosive waste matrix, belonging to the field of waste matrix treatment technology. Background Technology

[0002] Currently, the matrix conveying pump used in the powdered emulsion explosive production line is the NM063SF03S18B Netzsch pump. This pump has a large space at the bottom of the inlet, which results in a small amount of waste matrix accumulating after production. This leads to approximately 20-30 kg of waste matrix being removed daily after production. Currently, online addition of waste matrix is ​​prohibited. Since there is only one powdered emulsion explosive production line, it is not possible to mix waste matrix with normal matrix to make emulsion explosives. The only option is incineration, which causes environmental pollution and poses safety risks.

[0003] In view of the above, in order to solve the problem of waste substrate treatment, it is necessary to find a safe and efficient waste substrate treatment solution. Utility Model Content

[0004] The purpose of this invention is to propose an industrial explosive waste matrix demulsification and separation tank to solve the current problem of waste matrix treatment.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An industrial explosive waste matrix demulsification and separation tank includes a frame and a separation tank body. The frame is fixedly installed on the top of the separation tank body. A drive motor is fixedly installed on the upper end of the frame. The bottom of the drive motor is rotatably connected to a stirring shaft via a reducer. The stirring shaft extends into the middle of the inner cavity of the separation tank body. An anchor-type stirrer and a paddle-type stirrer are fixedly installed on the stirring shaft. The anchor-type stirrer is located at the lower end of the paddle-type stirrer. The upper end face of the separation tank body has a feed inlet. The bottom of the separation tank body has a discharge pipe with a discharge valve. A steam coil is installed inside the separation tank body. The steam inlet and outlet of the steam coil are both located on the outer wall of the separation tank. The steam inlet is connected to an external steam source.

[0007] Further technology of this utility model:

[0008] Preferably, the steam coil is divided into two parts, the upper part is located on the inner wall of the separator body and spirals from top to bottom, and the lower part is located at the bottom of the separator body and spirals from the outside to the inside.

[0009] Preferably, the main body of the separator is provided with a coil mounting bracket, the upper part of the steam coil is fixedly mounted on the coil mounting bracket, and a gap is left between the coil mounting bracket and the inner wall of the separator.

[0010] Preferably, the outer wall of the separation tank body is provided with a jacketed cylinder to support the separation tank body, and the side wall of the jacketed cylinder is provided with an ear seat, which is connected to the bracket to support the jacketed cylinder.

[0011] Preferably, the jacketed cylinder has a hollow structure and is filled with thermal insulation cotton.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] The demulsification separation tank proposed in this utility model has a steam heating device and an automatic stirring device. Under high temperature conditions, mechanical stirring forces the waste matrix to demulsify. Then, the principle of liquid separation is used to separate the supersaturated ammonium nitrate solution with different densities and immiscible with the composite oil phase. Finally, the separated supersaturated ammonium nitrate solution and composite oil phase are collected for further processing. This is feasible and can solve the current problem of waste matrix treatment. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of an industrial explosive waste matrix demulsification and separation tank according to the present invention;

[0016] Figure 2 This is a schematic diagram of the waste substrate treatment process;

[0017] In the diagram, 1: frame, 2: main body of the separator, 3: drive motor, 4: reducer, 5: anchor mixer, 6: paddle mixer, 7: feed inlet, 8: discharge pipe, 9: steam coil, 10: coil mounting bracket, 11: jacketed cylinder, 12: lug, 13: insulation cotton, 14: mixing shaft. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit its scope.

[0019] An industrial explosive waste matrix demulsification and separation tank includes a frame 1 and a separation tank body 2. The frame 1 is fixedly installed on the top of the separation tank body 2. A drive motor 3 is fixedly installed on the upper end of the frame 1. The bottom of the drive motor 3 is rotatably connected to a stirring shaft 14 through a reducer 4. The stirring shaft extends into the middle of the inner cavity of the separation tank body 2. An anchor-type stirrer 5 and a paddle-type stirrer 6 are fixedly installed on the stirring shaft. The anchor-type stirrer 5 is located at the lower end of the paddle-type stirrer 6. The upper end face of the separation tank body 2 has a feed inlet 7. The bottom of the separation tank body 2 has a discharge pipe 8 with a discharge valve. The separation tank body 2 has a steam coil 9 inside. The steam inlet and outlet of the steam coil 9 are both located on the outer wall of the separation tank. The steam inlet is connected to an external steam source.

[0020] Under normal circumstances, powdered emulsion explosives are relatively stable. However, under certain temperature and mechanical stirring conditions, molten powder can undergo flocculation and agglomeration. In the molten state, the dispersed phase droplets of the latex matrix aggregate into clumps, forming flocculation. Flocculation further promotes agglomeration, causing these agglomerates to merge into a large droplet. The interfacial film is thinnest around the "contact" surface between the droplet and the interface. Due to vibration and thermal effects, pores are most likely to form at this boundary. The continuous phase will leak out between the droplet and the interface, causing the pores to continuously expand, eventually leading to complete rupture of the interfacial film and complete demulsification of the emulsion.

[0021] In this embodiment, the drive motor 3 is powered on to drive the anchor mixer 5 and the paddle mixer 6 to rotate, while the external steam source is turned on to heat the inside of the separation tank body 2.

[0022] The composite oil phase in the latex liquid differs significantly in density and melting point from the ammonium nitrate aqueous solution, and they are immiscible. Therefore, under high-temperature conditions, mechanical stirring forces a change in the viscosity of the composite oil phase, thereby affecting the emulsion deformation and ultimately causing the W / O emulsion to break down. Then, the principle of liquid-liquid separation is used to separate the immiscible, supersaturated ammonium nitrate solution with different densities from the system.

[0023] Therefore, in this embodiment, under high temperature conditions, mechanical stirring is used to force the viscosity of the composite oil phase to change, thereby affecting the deformation of the emulsion and ultimately causing the W / O emulsion to demulsify. After the waste matrix in the demulsification separation tank is demulsified, the valve at the bottom of the tank is opened to discharge the ammonium nitrate solution into the waste liquid collection vehicle below the demulsification separation tank. Then, the remaining oil phase material is placed into another waste liquid collection vehicle.

[0024] The steam coil 9 is divided into two parts, upper and lower. The upper part is located on the inner wall of the separator body 2 and spirals from top to bottom, while the lower part is located at the bottom of the separator body 2 and spirals from the outside to the inside.

[0025] The steam coil 9 is divided into upper and lower parts, which can realize segmented heating. On the one hand, it can be determined whether to open the upper part based on the water volume in the main body 2 of the separator tank. On the other hand, when both upper and lower parts are opened at the same time, the coverage is wide and the heating is rapid.

[0026] The separator body 2 is equipped with a coil mounting bracket 10. The upper part of the steam coil 9 is fixedly mounted on the coil mounting bracket 10, and a gap is left between the coil mounting bracket 10 and the inner wall of the separator body 2. The gap facilitates rinsing the inner wall of the separator body 2 and prevents hazardous materials from remaining on the inner wall of the separator body 2.

[0027] The outer wall of the separation tank body 2 is provided with a jacket cylinder 11 to support the separation tank body 2. The side wall of the jacket cylinder 11 is provided with an ear seat 12, which is connected to the bracket to support the jacket cylinder 11.

[0028] The jacketed cylinder 11 has a hollow structure and is filled with thermal insulation cotton 13. The thermal insulation cotton 13 effectively insulates the main body 2 of the separation tank after it has been heated by the steam coil 9.

[0029] It should be noted that in this embodiment, steam valves are provided on the steam inlets of both the upper and lower parts of the steam coil 9, and the steam valves control the steam inlet volume of the steam coil 9.

[0030] Meanwhile, a temperature sensor is installed inside the main body 2 of the separator. The temperature signal received by the temperature sensor controls the opening and closing of the steam valve.

[0031] Waste substrate treatment process:

[0032] Waste matrix (<100kg) cleaned from the powdered emulsion explosive manufacturing workshop is transported manually by handcart to the waste matrix processing room of the non-conforming product processing workshop, and then the waste matrix is ​​lifted to the second-floor feeding platform by a hoist.

[0033] First, add a measured amount of water to the demulsification tank, then open the steam valve to heat the demulsification tank to 60-80℃;

[0034] Turn on the anchor mixer and paddle mixer (mixing time 20-30 minutes), then add a certain amount of waste matrix (each addition amount not exceeding 100kg) into the demulsification separation tank, control the temperature at 90-100℃, and the ratio of waste matrix to water is 1:1.

[0035] After the waste matrix in the demulsification separation tank is demulsified, open the valve on the discharge pipe at the bottom of the main body of the separation tank to discharge the ammonium nitrate solution into the waste liquid collection truck below the demulsification separation tank, and then put the remaining oil phase material into another waste liquid collection truck.

[0036] The separated ammonium nitrate solution is sent to a wastewater treatment pond for treatment or cooled and then used for greening the production area; the separated oil phase material is cooled, stored centrally, and then destroyed by combustion.

[0037] It should be noted that the waste liquid collection container is equipped with a cap with an opening, and the discharge pipe is connected to the waste liquid collection container using a flexible connector. On-site operators must wear protective clothing and heat-resistant gloves.

[0038] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. An industrial explosive waste matrix demulsifying separation tank, characterized by: The utility model provides a kind of separation tank, including rack and separation tank body, the rack is fixedly installed on the top of separation tank body, the upper end of the rack is fixedly installed with driving motor, the bottom of the driving motor is rotatably connected with stirring shaft by speed reducer, the stirring shaft is in-depth separation tank body inner chamber middle part, anchor agitator and paddle agitator are fixedly installed on the stirring shaft, the anchor agitator is located in the lower end of paddle agitator, the upper end of the separation tank body has feed inlet, the bottom of the separation tank body is equipped with discharge pipe, discharge pipe is equipped with discharge valve, steam coil is equipped in the separation tank body, steam coil steam inlet and steam outlet are located in the outer wall of separation tank, steam inlet is connected with external steam source.

2. The industrial explosive waste matrix demulsifying separation tank according to claim 1, characterized in that: The steam coil is divided into two parts, the upper part is located in the inner wall of the separation tank body, and the lower part is located in the bottom of the separation tank body.

3. An industrial explosive waste matrix demulsifying separation tank according to claim 2, characterized in that: The separation tank body is provided with a coil mounting bracket, and the upper part of the steam coil is fixedly installed on the coil mounting bracket.

4. The industrial explosive waste matrix demulsifying separation tank according to claim 1, characterized in that: The outer wall of the separation tank body is provided with a jacket sleeve, which supports the separation tank body.

5. An industrial explosive waste matrix demulsifying separation tank according to claim 4, characterized in that: The jacket sleeve is a hollow structure, and the inside is filled with thermal insulation cotton.

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