Sulfuric acid circulating tank process water adding equipment

Abstract

The utility model belongs to the field of dangerous chemicals, particularly relates to process water adding equipment for a sulfuric acid circulating tank, and provides the following scheme aiming at the problems that the existing generated acid mist can enter a pipeline for adding process water to cause pollution, the service life of the pipeline can be shortened due to the corrosivity of sulfuric acid, and the pipeline is difficult to disassemble. The device comprises a sulfuric acid circulating tank, wherein an input port is formed in the top of the sulfuric acid circulating tank; the sulfuric acid input pipe is used for inputting sulfuric acid, and the sulfuric acid input pipe is positioned above the sulfuric acid circulating tank; the process water drainage pipe is used for inputting process water, the process water drainage pipe is located above the sulfuric acid circulating tank, sulfuric acid and the process water are added into the sulfuric acid circulating tank through the sulfuric acid input pipe and the process water drainage pipe respectively, and premixing can be performed when the sulfuric acid and the process water pass through the mixing pipe, so that adjustment of the concentration of the sulfuric acid in the sulfuric acid circulating tank is facilitated; and through the connecting assembly, the pipeline for communicating with sulfuric acid can be quickly disassembled and assembled.

Description

Technical Field

[0001] The utility model relates to the technical field of hazardous chemicals, in particular to a sulfuric acid circulation tank adding process water equipment. Background Art

[0002] The sulfuric acid circulation tank is a key equipment in the sulfuric acid production device. Its main function is to contain the concentrated sulfuric acid refluxed from the dry absorption tower and maintain the concentration of concentrated sulfuric acid stable by acid cross-linking and water replenishment between the circulation tanks. The sulfuric acid circulation tank mainly has two forms: vertical and horizontal. In the sulfuric acid production process, process water is often needed to be added to the sulfuric acid circulation tank to adjust the concentration of sulfuric acid;

[0003] However, most of the pipes used to add process water are directly connected to the circulation tank or the pipes for adding sulfuric acid, so that the acid mist generated when the process water comes into contact with sulfuric acid will enter the pipes for adding process water and cause pollution. In addition, since sulfuric acid is corrosive, the service life of the pipes will be reduced. At the same time, the pipes are difficult to disassemble and are inconvenient when they need to be replaced. Utility Model Content

[0004] The utility model aims to solve the problems in the prior art that the acid mist generated may enter the pipe for adding process water to cause pollution, and the corrosiveness of sulfuric acid may reduce the service life of the pipe, and the pipe is difficult to disassemble and is inconvenient when it needs to be replaced, and a sulfuric acid circulation tank adding process water equipment is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A sulfuric acid circulation tank adding process water equipment comprises a sulfuric acid circulation tank, wherein the top of the sulfuric acid circulation tank is provided with an input port;

[0007] A sulfuric acid input pipe, used for inputting sulfuric acid, wherein the sulfuric acid input pipe is located above the sulfuric acid circulation tank;

[0008] A process water drainage pipe, used for inputting process water, wherein the process water drainage pipe is located above the sulfuric acid circulation tank;

[0009] The elbow is used to connect the pipelines of the equipment. The output end of the sulfuric acid input pipe is fixedly connected with a three-way pipe, and the other end of the three-way pipe is connected with one end of the elbow;

[0010] A mixing tube, used for mixing sulfuric acid and process water, wherein the top end of the mixing tube is connected to the bottom end of the elbow;

[0011] The connecting assembly is used to connect the mixing tube and the input port, and the connecting assembly is arranged between the input port and the mixing tube.

[0012] In a possible design, a process water input end is provided at the top of the curved pipe, the process water drainage pipe extends to the inside of the curved pipe through the process water input end, and the end of the process water drainage pipe is fixedly connected to a U-shaped pipe.

[0013] In a possible design, a plurality of spiral blades are disposed inside the mixing tube, and two adjacent spiral blades are disposed vertically.

[0014] In one possible design, the connecting assembly includes a connecting tube located between the mixing tube and the input port, the input port and the inner wall of the mixing tube are both provided with annular grooves on one end close to the connecting tube, the two annular grooves cooperate with the two ends of the connecting tube, the input port and the outer wall of the mixing tube are both provided with openings on one side close to the annular grooves, and the openings are connected to the annular grooves, and one side of the two ends of the outer wall of the connecting tube is fixedly provided with limit blocks, and the two limit blocks respectively cooperate with the two openings.

[0015] In a possible design, the outer walls of the mixing tube and the inlet are provided with an annular concave surface at one end close to the connecting tube, the outer wall of the annular concave surface is threadedly sleeved with a threaded barrel, the outer wall of the connecting tube is fixedly sleeved with two annular abutment plates, and the two annular abutment plates are located between two limit blocks, and the outer wall of the annular abutment plate is provided with a threaded groove on one side close to the limit block, and the two threaded grooves respectively cooperate with the two threaded barrels.

[0016] In a possible design, one end of the three-way pipe is fixedly connected to a water pipe, and one side of the outer wall of the input port is fixedly connected to a drainage pipe.

[0017] In a possible design, valves are disposed inside the input port, the drain pipe, the sulfuric acid input pipe, and the water pipe, and the valve inside the input port is located below the drain pipe.

[0018] In the present application, when used specifically, sulfuric acid is added to the interior of the sulfuric acid circulation tank through the sulfuric acid input pipe, sulfuric acid enters the interior of the mixing tube through the three-way pipe and the elbow, process water is added to the interior of the sulfuric acid circulation tank through the process water drainage pipe, and process water enters the interior of the mixing tube through the process water drainage pipe. After that, sulfuric acid and process water are mixed through multiple spiral sheets inside the mixing tube, so that they are pre-mixed by flowing before entering the interior of the sulfuric acid circulation tank, and then enter the interior of the sulfuric acid circulation tank through the connecting pipe and the input port, and the U-shaped tube at the end of the process water drainage pipe allows part of the water to remain at the bottom of the U-shaped tube after adding the process water, so as to prevent the acid mist generated by the mixing of sulfuric acid and process water from entering the interior of the process water drainage pipe, and the internal valves of the sulfuric acid input pipe and the input port are closed, and the valves of the water pipe and the drain pipe are opened, so that water is introduced into the equipment pipeline through the water pipe to clean it, and then the water is discharged through the drain pipe;

[0019] Through the connecting assembly, the threaded barrel on the outer wall of the mixing tube and the input port is rotated to disengage the threaded barrel from the limit block on the outer wall of the connecting pipe, thereby releasing the fixed state of the connecting pipe. The connecting pipe can then be disassembled. The connection between the tee pipe and the elbow can also be connected and installed through the connecting assembly, so that the elbow and the mixing tube can be disassembled, so that when the pipeline needs to be replaced due to corrosion of sulfuric acid, it can be quickly disassembled and installed.

[0020] In the utility model, the sulfuric acid circulation tank adding process water equipment can achieve pre-mixing by flowing into the interior of the sulfuric acid circulation tank when adding sulfuric acid and process water through the spiral blade, so as to facilitate the adjustment of the sulfuric acid concentration in the sulfuric acid circulation tank;

[0021] In the utility model, the sulfuric acid circulation tank adding process water equipment can achieve the rapid disassembly and installation of pipes such as elbows and mixing pipes that are connected to sulfuric acid or mixed with sulfuric acid through the connection components, so that when the pipes need to be replaced due to corrosion of sulfuric acid, the operation of the process can be facilitated and cumbersome steps can be reduced;

[0022] In the utility model, when in use, sulfuric acid and process water are added to the interior of the sulfuric acid circulation tank through the sulfuric acid input pipe and the process water drainage pipe respectively, and can be pre-mixed when passing through the mixing pipe, so as to facilitate the adjustment of the sulfuric acid concentration inside the sulfuric acid circulation tank;

[0023] The connection assembly allows the pipes used to connect the sulfuric acid to be quickly disassembled and installed, thereby reducing the process time required to replace the pipes when corroded by sulfuric acid. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the main structure of a sulfuric acid circulation tank adding process water equipment proposed by the utility model;

[0025] Figure 2 This is a partial structural schematic diagram of a sulfuric acid circulation tank adding process water equipment proposed by the utility model;

[0026] Figure 3 This is a schematic cross-sectional structure diagram of a sulfuric acid circulation tank adding process water equipment proposed by the utility model;

[0027] Figure 4 The utility model provides a schematic diagram of the exploded cross-section structure of a sulfuric acid circulation tank adding process water equipment connection assembly.

[0028] In the figure: 1, sulfuric acid circulation tank; 2, input port; 3, drain pipe; 4, mixing pipe; 5, elbow pipe; 6, sulfuric acid input pipe; 7, tee pipe; 8, water pipe; 9, process water input end; 10, connecting pipe; 11, process water drainage pipe; 12, U-shaped pipe; 13, spiral sheet; 14, annular concave surface; 15, threaded barrel; 16, limit block; 17, threaded groove; 18, annular stop plate; 19, opening; 20, annular groove. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0030] Example 1

[0031] Reference Figure 1-2 A sulfuric acid circulation tank plus process water equipment is used in the field of hazardous chemicals, comprising: a sulfuric acid circulation tank 1, the top of the sulfuric acid circulation tank 1 is provided with an input port 2 for introducing mixed sulfuric acid and process water into the circulation tank, a sulfuric acid input pipe 6 is located above the sulfuric acid circulation tank 1, and is used to input sulfuric acid into the equipment, and a process water drainage pipe 11 is also located above the sulfuric acid circulation tank 1, and is used to input process water.

[0032] The elbow 5 is used to connect the pipelines in the equipment. The output end of the sulfuric acid input pipe 6 is connected to the tee pipe 7, and the other end of the tee pipe 7 is connected to one end of the elbow 5. In this way, sulfuric acid can enter the elbow 5 through the tee pipe 7.

[0033] Reference Figure 3 A process water input end 9 is provided at the top of the curved pipe 5, and a process water drainage pipe 11 extends to the interior of the curved pipe 5 through the process water input end 9. The end of the process water drainage pipe 11 is fixedly connected to a U-shaped pipe 12, so that after adding process water, some water can remain at the bottom end of the U-shaped pipe 12 to prevent acid mist generated by the mixing of sulfuric acid and process water from entering the interior of the process water drainage pipe 11.

[0034] Reference Figure 3 The top end of the mixing tube 4 is connected to the bottom end of the curved tube 5 for further mixing the sulfuric acid and the process water. A plurality of spiral blades 13 are arranged inside the mixing tube 4. These spiral blades 13 can increase the contact area between the sulfuric acid and the process water and improve the mixing effect.

[0035] Reference Figure 4The connection assembly is used to connect the mixing tube 4 and the input port 2. The connection assembly includes a connecting tube 10 located between the mixing tube 4 and the input port 2. In order to facilitate the replacement of the connecting tube 10, an annular concave surface 14 is provided on the outer wall of the mixing tube 4 and the input port 2 near the end of the connecting tube 10. A threaded barrel 15 is threadedly sleeved on the outer wall of the annular concave surface 14. Two annular abutment plates 18 located between the two limit blocks 16 have threaded grooves 17 on their outer walls. The two threaded grooves 17 are matched with the two threaded barrels 15 respectively.

[0036] Specifically, the threaded barrel 15 can be rotated to disengage from the threaded groove 17 , thereby releasing the fixed state of the connecting pipe 10 .

[0037] Reference Figure 4 , an annular groove 20 is provided on the inner wall of the input port 2 and the mixing tube 4 near the end of the connecting tube 10, and the two ends of the connecting tube 10 cooperate with the two annular grooves 20. In addition, an opening 19 is provided on the side of the outer wall of the input port 2 and the mixing tube 4 near the annular groove 20, and a limit block 16 is fixedly provided on one side of the two ends of the outer wall of the connecting tube 10, and these limit blocks 16 cooperate with the openings 19.

[0038] Specifically, when the connecting pipe 10 is in the contact and fixed state, the connecting pipe 10 can be pulled out along the opening 19 for disassembly.

[0039] Example 2

[0040] refer to Figure 1-2 , an improvement based on Example 1: one end of the three-way pipe 7 is also fixedly connected to a water pipe 8, and one side of the outer wall of the input port 2 is fixedly connected to a drain pipe 3. By closing the internal valves of the sulfuric acid input pipe 6 and the input port 2, and opening the valves of the water pipe 8 and the drain pipe 3, water is allowed to flow into the equipment pipeline through the water pipe 8 to clean it, and then the water is discharged through the drain pipe 3.

[0041] The connection between the tee pipe 7 and the elbow pipe 5 can also be connected and installed through the connecting assembly, so that the elbow pipe 5 and the mixing pipe 4 can be disassembled, so that when the pipeline needs to be replaced due to corrosion of sulfuric acid, it can be quickly disassembled and installed.

[0042] Valves are provided inside the input port 2, the drain pipe 3, the sulfuric acid input pipe 6 and the water delivery pipe 8 to control the opening and closing of each valve.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sulfuric acid circulation tank adding process water equipment, characterized in that: include: A sulfuric acid circulation tank (1), wherein the top of the sulfuric acid circulation tank (1) is provided with an input port (2); A sulfuric acid input pipe (6) for inputting sulfuric acid, wherein the sulfuric acid input pipe (6) is located above the sulfuric acid circulation tank (1); A process water drainage pipe (11) for inputting process water, wherein the process water drainage pipe (11) is located above the sulfuric acid circulation tank (1); The elbow (5) is used to connect the pipelines of the equipment. The output end of the sulfuric acid input pipe (6) is fixedly connected to a three-way pipe (7), and the other end of the three-way pipe (7) is connected to one end of the elbow (5); A mixing tube (4) is used to mix sulfuric acid and process water, and the top end of the mixing tube (4) is connected to the bottom end of the elbow (5); A connecting component is used to connect the mixing tube (4) and the input port (2), and the connecting component is arranged between the input port (2) and the mixing tube (4).

2. A sulfuric acid circulation tank adding process water equipment according to claim 1, characterized in that: A process water input end (9) is provided at the top of the curved pipe (5), the process water drainage pipe (11) extends through the process water input end (9) to the interior of the curved pipe (5), and the end of the process water drainage pipe (11) is fixedly connected to a U-shaped pipe (12).

3. A sulfuric acid circulation tank adding process water equipment according to claim 2, characterized in that: A plurality of spiral sheets (13) are arranged inside the mixing tube (4), and two adjacent spiral sheets (13) are arranged vertically.

4. A sulfuric acid circulation tank adding process water equipment according to claim 3, characterized in that: The connection assembly comprises a connecting tube (10) located between the mixing tube (4) and the input port (2); an annular groove (20) is provided on the inner wall of the input port (2) and the mixing tube (4) at one end close to the connecting tube (10); the two annular grooves (20) are matched with the two ends of the connecting tube (10); an opening (19) is provided on the outer wall of the input port (2) and the mixing tube (4) at one side close to the annular groove (20); the opening (19) is connected to the annular groove (20); and a limit block (16) is fixedly provided on one side of the two ends of the outer wall of the connecting tube (10), and the two limit blocks (16) are matched with the two openings (19) respectively.

5. A sulfuric acid circulation tank adding process water equipment according to claim 4, characterized in that: The outer walls of the mixing tube (4) and the input port (2) are both provided with an annular concave surface (14) at one end close to the connecting tube (10); the outer wall of the annular concave surface (14) is threadedly sleeved with a threaded barrel (15); the outer wall of the connecting tube (10) is fixedly sleeved with two annular abutment plates (18), and the two annular abutment plates (18) are located between two limit blocks (16); the outer wall of the annular abutment plate (18) is provided with a threaded groove (17) on one side close to the limit block (16); the two threaded grooves (17) respectively cooperate with the two threaded barrels (15).

6. A sulfuric acid circulation tank adding process water equipment according to claim 1, characterized in that: One end of the three-way pipe (7) is fixedly connected to a water delivery pipe (8), and one side of the outer wall of the input port (2) is fixedly connected to a drainage pipe (3).

7. A sulfuric acid circulation tank adding process water equipment according to claim 6, characterized in that: The input port (2), the drainage pipe (3), the sulfuric acid input pipe (6) and the water delivery pipe (8) are all provided with valves inside, and the valve inside the input port (2) is located below the drainage pipe (3).

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