Demulsification device for treating nonferrous metal processing waste emulsion concentrated solution

Abstract

A demulsification device for processing waste emulsion concentrate in nonferrous metal processing comprises a tank body, a feeding port, a discharging port and a stirrer are arranged on the tank body, a plurality of aeration pipes are arranged at the bottom of the tank body, and during demulsification, the aeration pipes are used for introducing water vapor into the tank body. According to the demulsification device, water vapor is introduced into the tank body through the aeration pipe, and under the action of the water vapor, on one hand, the temperature of a waste emulsion concentrated solution and sulfuric acid can be increased, and the speed of a demulsification reaction can be increased; and secondly, a stirring effect on the waste emulsion concentrated solution and the sulfuric acid is achieved, so that the sulfuric acid is in full contact with the waste emulsion concentrated solution, the stable condition of the waste emulsion concentrated solution is more fully destroyed, and the two-phase separation of the waste emulsion concentrated solution is accelerated. According to the demulsification device, the demulsification efficiency is improved, the miscibility phenomenon is eliminated, and the better separation effect of an oil layer and a water layer is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of non-ferrous metal processing, in particular to a demulsification device for treating waste emulsion concentrate in non-ferrous metal processing. Background Art

[0002] In the rolling process of non-ferrous metals, emulsion is needed. The function of the emulsion is to lubricate and cool non-ferrous metal plates. After rolling, the emulsion becomes hazardous waste due to impurities such as oil and metal powder and cannot be reused. According to environmental protection requirements, waste emulsion needs to be disposed of as hazardous waste or treated to meet the corresponding discharge standards. In the process of waste emulsion treatment, the demulsification link of waste emulsion concentrate is crucial. Demulsification essentially refers to the process of eliminating the stable conditions of the emulsion, making the emulsion into two immiscible phases and separating them.

[0003] Existing demulsification devices usually adopt the method of adding demulsifying agents to the waste emulsion concentrate and stirring. Its disadvantage is that the demulsification efficiency is low, the two-phase separation is not complete, and there is a phenomenon of miscibility. Summary of the Utility Model

[0004] In order to overcome the deficiencies in the background art, the utility model discloses a demulsification device for treating waste emulsion concentrate in non-ferrous metal processing. The demulsification device adopts the following technical solutions:

[0005] A demulsification device for treating waste emulsion concentrate in non-ferrous metal processing, including a tank body, on which a feeding port, a discharging port and a stirrer are arranged, and at the bottom of the tank body, a plurality of air diffuser pipes are arranged. During demulsification, the air diffuser pipes are used to introduce steam into the tank body.

[0006] Further improving the technical solution, the air diffuser pipe is composed of a main pipe and a plurality of branch pipes connected. During demulsification, the steam enters the branch pipes from the main pipe and then enters the tank body from the branch pipes.

[0007] Further improving the technical solution, the outlet part of the branch pipe faces the bottom of the tank body.

[0008] Further improving the technical solution, the discharging port is arranged at the lower part of the tank body, and the discharging port is connected to an oil discharge pump and a water discharge pump respectively through pipelines.

[0009] Further improving the technical solution, a sampling observation port is arranged at the top of the tank body.

[0010] Further improving the technical solution, an observation window is also arranged on the side of the tank body, and the observation window is used to observe the effect of the demulsification reaction in the tank body and the boundary of oil-water separation.

[0011] Further improving the technical solution, an anti-corrosion layer is arranged on the inner surface of the tank body, and a heat-insulating layer is arranged on the outer surface of the tank body.

[0012] After implementing the above technical solution, compared with the background art, the beneficial effects of the present utility model are as follows:

[0013] This demulsification device is provided with a plurality of air diffuser pipes at the bottom of the tank body. During demulsification, steam is introduced into the tank body through the air diffuser pipes. The functions of the steam are as follows: firstly, it can increase the temperature of the waste emulsion concentrate and sulfuric acid, which helps to accelerate the speed of the demulsification reaction; secondly, it plays a role in stirring the waste emulsion concentrate and sulfuric acid, enabling the sulfuric acid to come into full contact with the waste emulsion concentrate, more fully destroying the stable conditions of the waste emulsion concentrate, and accelerating the two-phase separation of the waste emulsion concentrate.

[0014] This demulsification device not only improves the demulsification efficiency, eliminates the miscibility phenomenon, but also achieves a better separation effect between the oil layer and the water layer. Description of the Drawings

[0015] Attached Figure 1 shows the overall structural schematic diagram of this demulsification device.

[0016] Attached Figure 2 shows an implementation structural schematic diagram of the air diffuser pipe.

[0017] Attached Figure 3 shows another implementation structural schematic diagram of the air diffuser pipe.

[0018] Attached Drawings

[0019] 1. Tank body; 11. Feeding port; 12. Discharging port; 13. Sampling observation port; 14. Observation window; 15. Anticorrosion layer; 16. Heat preservation layer;

[0020] 2. Stirrer;

[0021] 3. Air diffuser pipe; 31. Main pipe; 32. Branch pipe;

[0022] 4. Oil drainage pump;

[0023] 5. Drainage pump;

[0024] 6. Oil layer;

[0025] 7. Water layer. Detailed Embodiment

[0026] The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present utility model and are not intended to limit the protection scope of the present utility model. It should be noted that in the description of the present utility model, the terms indicating the direction or positional relationship such as "front", "rear", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present utility model. It should also be noted that in the description of the present utility model, unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] The Figure 1 following shows the overall structural schematic diagram of a demulsification device for waste emulsion concentrate in non-ferrous metal processing. From the Figure 1 figure, it can be seen that the demulsification device mainly consists of a cylindrical tank body 1. At the top of the tank body 1, a feeding port 11, a stirrer 2, and a sampling observation port 13 are provided. On the side wall of the tank body 1, a discharge port 12 and an observation window 14 are provided. Among them, the discharge port 12 is close to the bottom of the tank body 1, and the observation window 14 is in a long strip shape and is arranged along the up and down direction of the tank body 1.

[0028] Before demulsification, the waste emulsion concentrate is injected into the tank body 1 through the feeding port 11, and then a certain dose of demulsifying agent is added into the tank body 1 through a chemical addition port (not shown in the figure). In this embodiment, the demulsifying agent is sulfuric acid.

[0029] The stirrer 2 is composed of a motor, a stirring shaft, and blades. The stirrer 2 is used to stir the waste emulsion concentrate and sulfuric acid in the tank body 1 to make the sulfuric acid react with the waste emulsion concentrate for demulsification.

[0030] To solve the problems in the background technology, a plurality of air diffuser pipes 3 are evenly arranged at the bottom of the tank body 1. During demulsification, high-temperature water vapor is introduced into the tank body 1 through the air diffuser pipes 3 to keep the temperature in the tank body stable at 60°C - 70°C. The function of introducing high-temperature water vapor is to improve the demulsification efficiency, make the two phases completely stratified, and eliminate the miscibility phenomenon.

[0031] Referring to the Figure 2 figure, the Figure 2 following shows an implementation structural schematic diagram of the air diffuser pipe. From the Figure 2It can be seen that the aeration pipe 3 is formed by connecting one main pipe 31 and multiple branch pipes 32. During demulsification, water vapor enters the branch pipes 32 from the main pipe 31 and then enters the tank body 1 from the branch pipes 32. After the water vapor enters the waste emulsion concentrate, on the one hand, it can increase the temperature of the waste emulsion concentrate and sulfuric acid, which helps to accelerate the speed of the demulsification reaction; on the other hand, it plays a role in stirring the waste emulsion concentrate and sulfuric acid, which helps to destroy the stable conditions of the waste emulsion concentrate and accelerate the two-phase separation of the waste emulsion concentrate.

[0032] In this embodiment, the tank body 1 is made of carbon steel or concrete material. For anti-corrosion and heat preservation, an anti-corrosion layer 15 is provided on the inner surface of the tank body 1, and a heat preservation layer 16 is provided on the outer surface of the tank body 1. The function of the anti-corrosion layer 15 is to prevent the tank body 1 from being corroded by sulfuric acid. The function of the heat preservation layer 16 is to keep warm and reduce the heat dissipation in the tank to the air.

[0033] Appendix Figure 2 In the figure, when the outlet part of the branch pipe 32 faces the top of the tank body 1, impurities in the waste emulsion concentrate will enter the branch pipe 32, thereby blocking the aeration pipe 3. Therefore, the technical solution is further improved.

[0034] Referring to the appendix Figure 3 , appendix Figure 3 shows a schematic structural diagram of an embodiment of the aeration pipe. It can be seen from appendix Figure 3 that when the outlet part of the branch pipe 32 faces the bottom of the tank body 1, impurities in the waste emulsion concentrate can be avoided from entering the branch pipe 32, thereby blocking the aeration pipe 3.

[0035] Referring to the appendix again Figure 1 , the discharge port 12 is located at the lower part of the tank body 1 and is connected to the oil discharge pump 4 and the water discharge pump 5 through a tee pipe and a valve respectively.

[0036] Working process:

[0037] After injecting the waste emulsion concentrate and sulfuric acid into the tank body 1, start the stirrer 2 and introduce high-temperature water vapor into the tank body 1 through the aeration pipe 3 to carry out the demulsification reaction. During this period, observe the demulsification reaction situation through the sampling observation port 13 and the observation window 14. After the demulsification reaction ends, let it stand for a period of time. At this time, the oil and water are stratified, the water layer 7 is located at the lower layer, and the oil layer 6 is located above the water layer 7.

[0038] First, start the water discharge pump 5 to pump out the water layer 7. During this period, observe the water level of the water layer 7 through the observation window 14 to avoid pumping out the oil layer 6. After the water layer 7 is pumped out, turn off the water discharge pump 5, start the oil discharge pump 4, and then pump out the oil layer 6. The pumped oil layer can be recycled by relevant manufacturers to generate corresponding economic benefits.

[0039] As can be seen from the above, this demulsification device improves the demulsification efficiency, enables the two phases to be completely stratified, and eliminates the miscibility phenomenon. In addition, this demulsification device also realizes the separation of the oil layer and the water layer.

[0040] The parts not described in detail are the prior art. Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The protection scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A demulsification device for treating concentrated emulsion of waste from non-ferrous metal processing, comprising a tank body, a feeding port, a discharging port and a stirrer arranged on the tank body, characterized in that: A plurality of aeration pipes are arranged at the bottom of the tank body, and the aeration pipes are used to introduce water vapor into the tank body during demulsification.

2. The demulsification device for treating concentrated emulsion of waste emulsion from non-ferrous metal processing as claimed in claim 1, characterized in that: The aeration pipe is composed of a main pipe and multiple branch pipes. When the emulsion is broken, water vapor enters the branch pipe from the main pipe and then enters the tank body from the branch pipe.

3. The demulsification device for treating concentrated emulsion of waste emulsion from non-ferrous metal processing as claimed in claim 2, characterized in that: The outlet of the branch pipe faces the bottom of the tank.

4. The demulsification device for treating concentrated emulsion of waste emulsion from non-ferrous metal processing as claimed in claim 1, characterized in that: The discharge port is arranged at the lower part of the tank body, and the discharge port is respectively connected with the oil discharge pump and the water discharge pump through pipelines.

5. The demulsification device for treating concentrated emulsion of waste emulsion from non-ferrous metal processing as claimed in claim 1, characterized in that: A sampling observation port is arranged on the top of the tank body.

6. The demulsification device for treating concentrated emulsion of waste emulsion from non-ferrous metal processing as claimed in claim 1, characterized in that: An observation window is also provided on the side of the tank body, and is used to observe the effect of the demulsification reaction in the tank body and the boundary of the oil-water layer.

7. The demulsification device for treating concentrated emulsion of waste emulsion from non-ferrous metal processing as claimed in claim 1, characterized in that: An anti-corrosion layer is arranged on the inner surface of the tank body, and a heat-insulating layer is arranged on the outer surface of the tank body.

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