Waste sulfuric acid concentration and recovery device

Abstract

The utility model discloses a waste sulfuric acid concentration and recovery device which comprises a concentration tank, the outer side of the concentration tank is wrapped with a heating shell, a preheating box is arranged on the side face of the heating shell, a feeding pipe is arranged at the top of the preheating box, a preheating pipe is connected between the feeding pipe and the concentration tank, a first pump body is installed on the preheating pipe, and a second pump body is installed on the first pump body. The preheating box is arranged on the feed port of the concentration tank, the heat conduction pipe in the preheating box can transfer heat to the preheating rings, and the preheating rings are arranged in the preheating box. In this way, when sulfuric acid waste liquid is added into the feeding pipe or liquid recycled by the recycling box returns to the concentration tank through the second guide pipe of the reflux pump body, the liquid can be preheated in the process of entering the concentration tank through the preheating pipe, and the situation that the temperature in the concentration tank is reduced when cold sulfuric acid waste liquid enters the concentration tank is avoided; the time for reheating the inside of the concentration tank to the required temperature is saved, so that the concentration efficiency of the concentration tank is higher.

Description

Technical Field

[0001] This utility model relates to the field of waste sulfuric acid concentration technology, specifically a waste sulfuric acid concentration and recovery device. Background Technology

[0002] Waste sulfuric acid concentration and recovery equipment is a device specifically designed for treating waste sulfuric acid. Its main purpose is to remove water from waste sulfuric acid, increase the concentration of sulfuric acid, and thus achieve resource recycling and reuse.

[0003] A search revealed that Chinese patent document CN115581929A discloses a waste sulfuric acid concentration and recycling device. This device achieves rapid concentration by mixing the waste sulfuric acid in multiple directions, ensuring thorough mixing and uniform heating. This facilitates rapid concentration and easy recycling, minimizing the risk of pollution. However, the following issues remain:

[0004] When the above-mentioned waste sulfuric acid concentration and recovery device is in use, the temperature of the waste sulfuric acid is much higher than that of the tank when the waste liquid is added. This causes the temperature of the waste liquid in the tank to drop when it is added, and it takes some time to reheat. The same problem occurs when circulating liquid is added, which reduces the concentration efficiency when heating. Utility Model Content

[0005] The purpose of this invention is to provide a waste sulfuric acid concentration and recovery device to solve the problem mentioned in the background art where, when adding waste sulfuric acid, the temperature of the waste liquid is significantly different from the temperature inside the tank, causing the temperature of the waste liquid inside the tank to drop upon addition, and requiring some time to reheat. The same problem occurs when circulating liquid is added, resulting in a decrease in concentration efficiency during heating.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a reinforced electrical insulation adhesive sheet to prevent dispersion, comprising a concentration tank, a heating shell wrapped around the outside of the concentration tank, a preheating box provided on the side of the heating shell, a feed pipe provided on the top of the preheating box, a preheating pipe connected between the feed pipe and the concentration tank, and a first pump body installed on the preheating pipe;

[0007] The preheating box is equipped with two sets of preheating rings. The top of the concentration tank is connected to a first conduit. The end of the first conduit away from the concentration tank is connected to a condenser. The bottom of the condenser is connected to a recovery box. The side of the recovery box is connected to a reflux box. The reflux box is equipped with a second conduit, which is connected to the preheating pipe.

[0008] Preferably, a stirring motor is installed on the top of the concentration tank, a stirring rod is connected to the bottom of the stirring motor, and the stirring rod is distributed and rotated inside the concentration tank. A drain valve is connected to the bottom of the concentration tank.

[0009] Preferably, the preheating box is filled with insulation cotton, and the preheating box and the heating shell are fixedly connected by screws.

[0010] Preferably, there are two sets of preheating rings, and a heat-conducting pipe is connected between the two sets of preheating rings. A heat-conducting pipe is also connected between the preheating ring and the heating shell. The heat-conducting pipe is made of a heat-conducting metal.

[0011] Preferably, the preheating pipe is configured as a U-shaped pipe structure, and the outer walls of both ends of the preheating pipe are in contact with the preheating ring.

[0012] Preferably, the height of the first pump body is less than the height of the feed pipe.

[0013] Preferably, the second conduit is connected to the bottom of the recycling bin, and a reflux pump body is installed in the middle of the second conduit.

[0014] Preferably, the second conduit is vertically connected to the preheating pipe, and the second conduit is connected to the end of the preheating pipe near the feed pipe, and the connection between the second conduit and the preheating pipe is located above the preheating ring.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. By installing a preheating box at the feed inlet of the concentration tank, the heat-conducting pipes inside the preheating box can transfer heat to the preheating ring. In this way, when sulfuric acid waste liquid is added to the feed pipe or the liquid recovered from the recovery tank returns to the concentration tank through the second conduit of the return pump body, it can be preheated during the process of passing through the preheating pipe to the inside of the concentration tank. This avoids the situation where the temperature inside the concentration tank drops when the cold sulfuric acid waste liquid enters the concentration tank, and saves the time of reheating the inside of the concentration tank to the required temperature, making the concentration efficiency of the concentration tank higher. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the side cross-sectional structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the preheating box in this utility model;

[0021] Figure 5This is a schematic diagram of the internal structure of the preheating box in this utility model.

[0022] In the diagram: 1. Concentrator; 101. Stirring motor; 102. Stirring rod; 103. Drain valve; 2. Heating shell; 201. First support; 3. Preheating box; 301. Preheating ring; 302. Heat pipe; 4. Feed pipe; 401. Preheating pipe; 402. First pump body; 5. First conduit; 6. Condenser; 7. Recovery box; 8. Reflux box; 801. Second conduit; 802. Reflux pump body. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] Example 1, please refer to Figure 1-5 This utility model provides a waste sulfuric acid concentration and recovery device, including a concentration tank 1, a stirring motor 101, a stirring rod 102, a drain valve 103, a heating shell 2, a first support 201, a preheating box 3, a preheating ring 301, a heat-conducting pipe 302, a feed pipe 4, a preheating pipe 401, a first pump body 402, a first conduit 5, a condenser 6, a recovery box 7, a reflux box 8, a second conduit 801, and a reflux pump body 802. The heating shell 2 is wrapped around the outside of the concentration tank 1. The stirring motor 101 is installed on the top of the concentration tank 1. The stirring rod 102 is connected to the bottom of the stirring motor 101 and is distributed and rotated inside the concentration tank 1. The drain valve 103 is connected to the bottom of the concentration tank 1, which facilitates heating, stirring and concentrating the sulfuric acid waste liquid inside.

[0025] Specifically, such as Figure 1 and Figure 2 As shown, a preheating box 3 is provided on the side of the heating shell 2. The interior of the preheating box 3 is filled with heat insulation cotton, and the preheating box 3 and the heating shell 2 are fixedly connected by screws, which facilitates the connection and installation of the preheating box 3 and the heating shell 2.

[0026] Specifically, such as Figure 2 and Figure 3 As shown, a feed pipe 4 is provided on the top of the preheating box 3. A preheating pipe 401 is connected between the feed pipe 4 and the concentration tank 1. A first pump body 402 is installed on the preheating pipe 401. The preheating pipe 401 is configured as a U-shaped pipe structure, and the outer walls of both ends of the preheating pipe 401 are in contact with the preheating ring 301. The preheating pipe 401 can preheat the sulfuric acid waste liquid entering the concentration tank 1. This can prevent the temperature of the sulfuric acid waste liquid that has been heated in the concentration tank 1 from dropping, and make the concentration efficiency of the concentration tank 1 higher.

[0027] Specifically, such as Figure 2 and Figure 5As shown, the height of the first pump body 402 is less than the height of the feed pipe 4, which can prevent sulfuric acid waste liquid from flowing back out of the feed pipe 4 due to the U-shaped pipe structure;

[0028] Specifically, such as Figure 2 and Figure 5 As shown, the preheating box 3 is equipped with two sets of preheating rings 301 inside. There are two sets of preheating rings 301, and a heat-conducting pipe 302 is connected between the two sets of preheating rings 301. A heat-conducting pipe 302 is also connected between the preheating ring 301 and the heating shell 2. The heat-conducting pipe 302 is made of heat-conducting metal. The heat-conducting pipe 302 can conduct the heat generated on the heating shell 2 to the preheating ring 301. Then, the sulfuric acid waste liquid passing through the preheating pipe 401 can be preheated through the preheating ring 301, which can reduce the temperature change in the concentration tank 1.

[0029] Specifically, such as Figure 1 and Figure 4 As shown, the top of the concentration tank 1 is connected to a first conduit 5, the end of the first conduit 5 away from the concentration tank 1 is connected to a condenser 6, the bottom of the condenser 6 is connected to a recovery tank 7, the side of the recovery tank 7 is connected to a reflux tank 8, and a second conduit 801 is provided inside the reflux tank 8, and the second conduit 801 is connected to a preheating pipe 401. The second conduit 801 is connected to the bottom of the recovery tank 7, and a reflux pump body 802 is installed in the middle of the second conduit 801. In this way, the liquid in the recovery tank 7 can be returned to the feed pipe 4 through the reflux pump body 802.

[0030] Specifically, such as Figure 1 and Figure 4 As shown, the second conduit 801 is vertically connected to the preheating pipe 401, and the second conduit 801 is connected to the end of the preheating pipe 401 near the feed pipe 4. The connection between the second conduit 801 and the preheating pipe 401 is located above the preheating ring 301. In this way, the liquid circulating through the second conduit 801 can be reheated by the preheating box 3 for concentration.

[0031] In this embodiment of the application, a preheating box 3 is set on the feed inlet of the concentration tank 1. The heat conduction pipe 302 inside the preheating box 3 is connected to the heating shell 2. When the heating shell 2 heats the concentration tank 1, the heat can be transferred to the preheating ring 301 through the heat conduction pipe 302. Then the preheating ring 301 can heat the preheating pipe 401. In this way, when sulfuric acid waste liquid is added to the feed pipe 4, the process of passing through the preheating pipe 401 to the inside of the concentration tank 1 can be preheated, avoiding the situation where the temperature inside the concentration tank 1 drops when the cold sulfuric acid waste liquid enters the concentration tank 1. This saves the time of reheating the inside of the concentration tank 1 to the required temperature, making the concentration efficiency of the concentration tank 1 higher.

[0032] When the liquid recovered by the recovery tank 7 returns to the concentration tank 1 through the second conduit 801 of the return pump body 802, it will first be guided into the preheating pipe 401 for reheating. In this way, the waste sulfuric acid concentration and recovery device is completed. It should be noted that this utility model is a waste sulfuric acid concentration and recovery device. All components are general standard parts or parts known to those skilled in the art. Its structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components, which refer to power components, electrical components and the matching monitoring computer and power supply, are connected by wires. The specific connection method should refer to the working principle above and complete the electrical connection between each electrical component in sequence. The detailed connection method is the technology known in the art.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A waste sulfuric acid concentration and recovery device, comprising a concentration tank (1), characterized in that: The outside of the concentration tank (1) is covered with a heating shell (2), and a preheating box (3) is provided on the side of the heating shell (2). A feed pipe (4) is provided on the top of the preheating box (3). A preheating pipe (401) is connected between the feed pipe (4) and the concentration tank (1). A first pump body (402) is installed on the preheating pipe (401). The preheating box (3) is equipped with two sets of preheating rings (301). The top of the concentration tank (1) is connected to a first conduit (5). The end of the first conduit (5) away from the concentration tank (1) is connected to a condenser (6). The bottom of the condenser (6) is connected to a recovery box (7). The side of the recovery box (7) is connected to a reflux box (8). The reflux box (8) is equipped with a second conduit (801). The second conduit (801) is connected to the preheating pipe (401).

2. The waste sulfuric acid concentration and recovery device according to claim 1, characterized in that: The top of the concentration tank (1) is equipped with a stirring motor (101), the bottom of the stirring motor (101) is connected to a stirring rod (102), and the stirring rod (102) is distributed inside the concentration tank (1) and rotated. The bottom of the concentration tank (1) is connected to a drain valve (103).

3. The waste sulfuric acid concentration and recovery device according to claim 1, characterized in that: The preheating box (3) is filled with insulation cotton, and the preheating box (3) and the heating shell (2) are fixedly connected by screws.

4. The waste sulfuric acid concentration and recovery device according to claim 1, characterized in that: The preheating ring (301) is provided in two sets, and a heat-conducting pipe (302) is connected between the two sets of preheating rings (301). A heat-conducting pipe (302) is also connected between the preheating ring (301) and the heating shell (2). The heat-conducting pipe (302) is made of heat-conducting metal.

5. The waste sulfuric acid concentration and recovery device according to claim 1, characterized in that: The preheating pipe (401) is configured as a U-shaped pipe structure, and the outer walls of both ends of the preheating pipe (401) are in contact with the preheating ring (301).

6. The waste sulfuric acid concentration and recovery device according to claim 1, characterized in that: The height of the first pump body (402) is less than the height of the feed pipe (4).

7. The waste sulfuric acid concentration and recovery device according to claim 1, characterized in that: The second conduit (801) is connected to the bottom of the recycling box (7), and a return pump body (802) is installed in the middle of the second conduit (801).

8. The waste sulfuric acid concentration and recovery device according to claim 1, characterized in that: The second conduit (801) is vertically connected to the preheating pipe (401), and the second conduit (801) is connected to one end of the preheating pipe (401) near the feed pipe (4), and the connection between the second conduit (801) and the preheating pipe (401) is located above the preheating ring (301).

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