Chlor-alkali device sulfuric acid drying system titanium cold temperature constant device

Abstract

The utility model discloses a kind of titanium cold temperature constant device of chlor-alkali device sulfuric acid drying system, including cooling component, the one end of cooling component is fixedly connected with the air inlet pipe connected, the other end of cooling component is fixedly connected with air outlet pipe, the outside of cooling component is communicated with two circulating water connecting pipes, air outlet pipe is communicated with air inlet pipe by cooling component, the outside of air outlet pipe is wrapped with annular cavity, the inside of annular cavity and the outside of air outlet pipe are inlaid, the top of annular cavity is communicated with infusion tube, the bottom of annular cavity is communicated with drainage tube. The utility model is preheated to chlorine in air outlet pipe by the effect of heat conduction, utilizes two temperature detectors, can respectively detect the temperature of constant-temperature fluid in annular cavity and chlorine entering electric valve, when the temperature of detection is consistent, control box controls electric valve to open, so as to guarantee that the chlorine temperature constant of air outlet pipe discharge.

Description

Technical Field

[0001] This utility model belongs to the technical field of tubular titanium coolers, specifically a titanium cooling temperature constant device for a sulfuric acid drying system in a chlor-alkali plant. Background Technology

[0002] Titanium cooling temperature constant-temperature devices are a common type of equipment in the sulfuric acid drying system of chlor-alkali plants, and are also key equipment in the chlor-alkali industry. The most common type of titanium cooling temperature constant-temperature device is the shell-and-tube titanium cooler. The shell-and-tube cooler, also called a shell-and-tube cooler, is divided into a tube side and a shell side. The path of the liquid flowing inside the tubes is the tube side, and the path of the liquid flowing outside the tubes is the shell side. The wall surface of the tube bundle is the heat transfer surface. When the temperature difference between the tube bundle and the shell exceeds 50°C, appropriate temperature compensation measures are taken to eliminate or reduce thermal stress. Generally, water cooling is the dominant type.

[0003] In the prior art, Chinese patent CN221259583U discloses a shell-and-tube cooler, including a shell; a cooling chamber is provided inside the shell, through which the coolant flows, and a plurality of inner tubes are provided inside the cooling chamber; an inlet and an outlet are respectively provided on the left and right sides of the shell, and the left and right ends of the inner tubes are connected to the inlet and the outlet respectively; the inner tubes include a plurality of cooling sections and a plurality of fixed sections; the plurality of cooling sections and the plurality of fixed sections are staggered and connected, and the angle between adjacent cooling sections is less than 180°, so that the tube side when the cooling water passes through the inner tube is increased; a plurality of fixed plates are provided inside the cooling chamber, and the fixed plates are used to fix the fixed sections and extend the shell side of the coolant.

[0004] However, the shell-and-tube cooler provided in the above technical solution still has many shortcomings in actual application. For example, in the shell-and-tube cooler, chlorine gas flows through the tube side and circulating water flows through the shell side. The crystallization temperature of chlorine water condensed in the titanium cooler is 9.6℃, and the daily control index range is 12℃~18℃. During the cooling process, the outlet chlorine temperature of the titanium cooler cannot be kept constant, and it has a significant impact on the sulfuric acid consumption of the subsequent packed tower and bubble cap tower. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] To address the issues raised in the background section regarding the chlorine flow path of the tubular titanium cooler, the circulating water flow path of the shell, the condensation temperature of the chlorine water in the titanium cooler being 9.6℃, the daily control range being 12℃~18℃, the inability to maintain a constant chlorine temperature at the outlet of the titanium cooler during the cooling process, and the significant impact on the sulfuric acid consumption of the subsequent packed tower and bubble cap tower, this invention adopts the following technical solution.

[0007] A titanium-cooled temperature constant device for a sulfuric acid drying system in a chlor-alkali plant includes a cooling assembly. One end of the cooling assembly is fixedly connected to an inlet pipe, and the other end is fixedly connected to an outlet pipe. Two circulating water connection pipes are connected to the outside of the cooling assembly. The outlet pipe is connected to the inlet pipe through the cooling assembly. An annular cavity is wrapped around the outside of the outlet pipe, and the inner side of the annular cavity is in contact with the outer side of the outlet pipe. A liquid inlet pipe is connected to the top of the annular cavity, and a liquid outlet pipe is connected to the bottom of the annular cavity. An electric valve is installed at the end of the outlet pipe. Temperature detectors are installed on one side of the annular cavity and the electric valve, respectively. The ends of the two temperature detectors are fixedly connected to the same control box.

[0008] Preferably, the control box is equipped with a central processing unit. When the control box detects that the temperatures of the two temperature detectors are the same, it controls the electric valve to open.

[0009] Preferably, the cooling assembly includes a protective shell, air guide pipes, baffles, and sealing plates. Multiple baffles are provided at the top and bottom of the inner wall of the protective shell, and the multiple baffles are alternately distributed inside the protective shell. Multiple air guide pipes are provided inside the protective shell, and sealing plates are fixedly connected to the inner sides of both ends of the protective shell. The multiple air guide pipes penetrate the sealing plates.

[0010] Preferably, both ends of the protective shell are threaded with connecting rings, and the side of the connecting ring away from the protective shell is fixedly connected with a cap, one of which is connected to the air inlet pipe and the other is connected to the air outlet pipe.

[0011] Preferably, the central axis of the connecting ring coincides with the central axis of the protective shell, and the outer side of the connecting ring is provided with a plurality of annularly distributed protrusions, and the connecting ring and the protrusions form an integrated structure.

[0012] Preferably, multiple reinforcing ribs are fixedly connected to both sides of the protective shell, and the two circulating water connecting pipes are symmetrical about the vertical center line of the protective shell.

[0013] Preferably, the bottom of the protective shell is fixedly connected to multiple mounting brackets, and each mounting bracket has threaded holes at its four bottom corners. Beneficial effects

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention uses an infusion tube to introduce a constant-temperature fluid into the annular cavity and discharge it through a drain tube. The temperature of the constant-temperature fluid can be adjusted according to actual conditions. Through heat conduction, the chlorine gas in the outlet pipe is preheated. Two temperature detectors can be used to detect the temperature of the constant-temperature fluid in the annular cavity and the chlorine gas entering the electric valve. When the detected temperatures are consistent, the control box controls the electric valve to open, thereby ensuring that the temperature of the chlorine gas discharged from the outlet pipe is constant, preventing crystallization, and improving the practicality of the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a schematic diagram of the bottom three-dimensional structure of this utility model; Figure 3 This is a partial three-dimensional structural schematic diagram of the present invention; Figure 4 This is a three-dimensional structural diagram of the baffle plate of this utility model; Figure 5 This is a schematic diagram of the three-dimensional structure of the annular cavity of this utility model.

[0016] The correspondence between the labels and component names in the attached figures is as follows: 1. Inlet pipe; 2. Outlet pipe; 3. Circulating water connection pipe; 4. Annular cavity; 5. Infusion pipe; 6. Drain pipe; 7. Electric valve; 8. Temperature detector; 9. Control box; 10. Protective shell; 11. Air guide pipe; 12. Baffle plate; 13. Sealing plate; 14. Connecting ring; 15. End cap; 16. Mounting bracket; 17. Reinforcing rib. Detailed Implementation

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0019] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. The present invention provides the following embodiments.

[0020] Please see Figures 1-5 One embodiment of this utility model is a titanium-cooled temperature constant device for a sulfuric acid drying system in a chlor-alkali plant. The device includes a protective shell 10, and multiple mounting brackets 16 are fixedly connected to the bottom of the protective shell 10. Threaded holes are provided at the four corners of the bottom of each mounting bracket 16. By using the threaded holes on the mounting bracket 16 and external bolts, the device can be connected and fixed to external installation components to complete the installation of the device.

[0021] In this embodiment, multiple baffles 12 are provided at the top and bottom of the inner wall of the protective shell 10. The multiple baffles 12 are alternately distributed inside the protective shell 10. Multiple air guide pipes 11 are provided inside the protective shell 10. Sealing plates 13 are fixedly connected to the inner sides of both ends of the protective shell 10. The multiple air guide pipes 11 pass through the sealing plates 13. Connecting rings 14 are threaded to the outer sides of both ends of the protective shell 10. End caps 15 are fixedly connected to the side of the connecting rings 14 away from the protective shell 10. One end cap 15 communicates with the air inlet pipe 1, and the other end cap 15 communicates with the air inlet pipe 1. Connected to the outlet pipe 2, water can enter the interior of the protective shell 10 through one of the circulating water connection pipes 3 and be discharged through the other circulating water connection pipe 3. Through the inlet pipe 1, chlorine gas can be transported to one of the end caps 15 and then to the outlet pipe 2 through the gas guide pipe 11. The gas guide pipe 11 is located inside the protective shell 10. The water flow inside the protective shell 10 can achieve the purpose of heat exchange and cooling. Through the setting of the sealing plates 13 at both ends of the protective shell 10, chlorine gas can pass through the gas guide pipe 11 without entering the protective shell 10.

[0022] In this embodiment, the central axis of the connecting ring 14 coincides with the central axis of the protective shell 10. Multiple annularly distributed protrusions are provided on the outer side of the connecting ring 14. The connecting ring 14 and the protrusions form an integrated structure. Multiple reinforcing ribs 17 are fixedly connected to both sides of the protective shell 10. The two circulating water connecting pipes 3 are symmetrical about the vertical center line of the protective shell 10. The setting of the connecting ring 14 can protect the connection edge between the protective shell 10 and the sealing plate 13, ensuring the stability of the connection. The setting of the protrusions can strengthen the strength of the connecting ring 14 and improve the protective performance of the connecting ring 14. The reinforcing ribs 17 can strengthen the strength of the protective shell 10, making the protective shell 10 less prone to deformation.

[0023] In this embodiment, one end of the protective shell 10 is fixedly connected to an air inlet pipe 1, and the other end of the protective shell 10 is fixedly connected to an air outlet pipe 2. Two circulating water connection pipes 3 are connected to the outer side of the protective shell 10. The air outlet pipe 2 is connected to the air inlet pipe 1 via a cooling assembly. An annular cavity 4 surrounds the outer side of the air outlet pipe 2, and the inner side of the annular cavity 4 is in contact with the outer side of the air outlet pipe 2. An infusion pipe 5 is connected to the top of the annular cavity 4, and a drain pipe 6 is connected to the bottom of the annular cavity 4. An electric valve 7 is provided at the end of the air outlet pipe 2. Temperature detectors 8 are provided on one side of both the annular cavity 4 and the electric valve 7. The two temperature detectors 8 are respectively connected to the interior of the annular cavity 4 and the electric valve 7. The ends of the two temperature detectors 8 are fixedly connected to... The same control box 9 contains a central processing unit. When the control box 9 detects that the temperatures of the two temperature detectors 8 are the same, it controls the electric valve 7 to open. Through the infusion tube 5, a constant temperature fluid is introduced into the annular cavity 4 and discharged through the drain tube 6. The temperature of the constant temperature fluid can be adjusted according to the actual situation. Through heat conduction, the chlorine gas in the vent pipe 2 is preheated. Using the two temperature detectors 8, the temperature of the constant temperature fluid in the annular cavity 4 and the chlorine gas entering the electric valve 7 can be detected respectively. When the detected temperatures are the same, the control box 9 controls the electric valve 7 to open, thereby ensuring that the temperature of the chlorine gas discharged from the vent pipe 2 is constant and preventing crystallization.

[0024] Working Principle: When using this device, firstly, the device can be connected and fixed to the external mounting components through the threaded holes on the mounting bracket 16 and the use of external bolts to complete the installation of the device. Water can enter the interior of the protective shell 10 through one circulating water connection pipe 3 and be discharged through the other circulating water connection pipe 3. Chlorine gas can be transported to one of the end caps 15 through the air inlet pipe 1 and then to the air outlet pipe 2 through the air guide pipe 11. The air guide pipe 11 is located inside the protective shell 10. The water flow inside the protective shell 10 can achieve heat exchange and cooling. The sealing plates 13 at both ends of the protective shell 10 can prevent chlorine gas from entering the protective shell 10 through the air guide pipe 11. The connecting ring 14 can protect the connection edge between the protective shell 10 and the sealing plate 13, ensuring the stability of the connection. The convex strip can strengthen the connecting ring 14 and improve its protective performance. The reinforcing rib 17 can strengthen the protective shell 10 and make it less prone to deformation.

[0025] A constant-temperature fluid at a certain temperature can be introduced into the annular cavity 4 through the infusion tube 5 and discharged through the drain tube 6. The temperature of the constant-temperature fluid can be adjusted according to the actual situation. Through heat conduction, the chlorine gas in the outlet tube 2 is preheated. Two temperature detectors 8 can detect the temperature of the constant-temperature fluid in the annular cavity 4 and the chlorine gas entering the electric valve 7, respectively. When the detected temperatures are consistent, the control box 9 controls the electric valve 7 to open, thereby ensuring that the temperature of the chlorine gas discharged from the outlet tube 2 is constant, preventing crystallization, and improving the practicality of the device.

[0026] The above description provides a more detailed explanation of the present invention in conjunction with specific embodiments. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present invention.

Claims

1. A titanium-cooled temperature constant device for a sulfuric acid drying system in a chlor-alkali plant, comprising a cooling assembly, one end of which is fixedly connected to an air inlet pipe (1), and the other end of which is fixedly connected to an air outlet pipe (2), and the outer side of the cooling assembly is connected to two circulating water connection pipes (3), characterized in that: The exhaust pipe (2) is connected to the intake pipe (1) through a cooling assembly. The outer side of the exhaust pipe (2) is wrapped with an annular cavity (4). The inner side of the annular cavity (4) is in contact with the outer side of the exhaust pipe (2). The top of the annular cavity (4) is connected to an infusion pipe (5), and the bottom of the annular cavity (4) is connected to a drain pipe (6). An electric valve (7) is provided at the end of the exhaust pipe (2). Temperature detectors (8) are provided on one side of the annular cavity (4) and the electric valve (7). The two temperature detectors (8) are connected to the interior of the annular cavity (4) and the electric valve (7), respectively. The ends of the two temperature detectors (8) are fixedly connected to the same control box (9).

2. The titanium-cooled temperature constant device for the sulfuric acid drying system of a chlor-alkali plant according to claim 1, characterized in that: The control box (9) is equipped with a central processing unit. When the control box (9) detects that the temperatures of the two temperature detectors (8) are the same, it controls the electric valve (7) to open.

3. The titanium-cooled temperature constant device for the sulfuric acid drying system of a chlor-alkali plant according to claim 2, characterized in that: The cooling assembly includes a protective shell (10), air guide pipes (11), baffles (12) and sealing plates (13). Multiple baffles (12) are provided on the top and bottom of the inner wall of the protective shell (10). The multiple baffles (12) are alternately distributed inside the protective shell (10). Multiple air guide pipes (11) are provided inside the protective shell (10). Sealing plates (13) are fixedly connected to the inner sides of both ends of the protective shell (10). The multiple air guide pipes (11) penetrate the sealing plates (13).

4. The titanium-cooled temperature constant device for the sulfuric acid drying system of a chlor-alkali plant according to claim 3, characterized in that: Both ends of the protective shell (10) are threaded with connecting rings (14). A cap (15) is fixedly connected to the side of the connecting ring (14) away from the protective shell (10). One cap (15) is connected to the air inlet pipe (1), and the other cap (15) is connected to the air outlet pipe (2).

5. The titanium-cooled temperature constant device for the sulfuric acid drying system of a chlor-alkali plant according to claim 4, characterized in that: The central axis of the connecting ring (14) coincides with the central axis of the protective shell (10). Multiple convex strips are evenly distributed in a ring shape on the outer side of the connecting ring (14). The connecting ring (14) and the convex strips form an integrated structure.

6. The titanium cooling temperature constant device for the sulfuric acid drying system of a chlor-alkali plant according to claim 5, characterized in that: The protective shell (10) has multiple reinforcing ribs (17) fixedly connected to both sides, and the two circulating water connecting pipes (3) are symmetrical about the vertical center line of the protective shell (10).

7. The titanium-cooled temperature constant device for the sulfuric acid drying system of a chlor-alkali plant according to claim 6, characterized in that: The bottom of the protective shell (10) is fixedly connected to multiple mounting brackets (16), and threaded holes are provided at the four corners of the bottom of the mounting brackets (16).

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