A storage tower for producing trifluoroacetic acid

Abstract

This application discloses a trifluoroacetic acid production storage tower, including a storage tower body. Both ends of the storage tower body are equipped with sealing covers, which, together with the ends of the storage tower body, form a sealed space. An exhaust pipe extending to the outside is installed within the sealed space and connected to a tail gas treatment system. An inlet pipe and a outlet pipe extend to the outside through the sealed space, respectively. A positive pressure air supply pipe is installed within the sealed space. This application achieves monitoring and protection of the trifluoroacetic acid storage tower through low-cost modification. The sealed space at both ends of the storage tower enhances the accumulation effect of harmful gases, allowing for monitoring of pipe connections. This enables the detection of even minor gas leaks, and in the event of a leak, timely treatment of the leaked gas ensures the safe operation of the trifluoroacetic acid storage tower and further guarantees the environmental safety of the plant.

Description

Technical Field

[0001] This utility model relates to the field of chemical product storage technology, and in particular to a storage tower for producing trifluoroacetic acid. Background Technology

[0002] Trifluoroacetic acid is a fluorinated derivative of acetic acid. It is a strong acid, highly reactive, and has good solubility, making it an excellent solvent for organic compounds and a raw material for chemical production. It has broad application prospects in many fields and has significant market value. However, whether in the production or use of trifluoroacetic acid, proper storage is of paramount importance. Improper handling can lead to serious environmental accidents.

[0003] Trifluoroacetic acid is highly corrosive and irritating, making targeted monitoring during storage essential. Our monitoring revealed that while tank storage technology is relatively mature, leaks primarily occur during the inlet and outlet processes. Substandard valve quality, especially pressure buildup within the tank, is the main cause of trifluoroacetic acid leaks. Therefore, we propose a trifluoroacetic acid storage tower to address these issues. Utility Model Content

[0004] This application provides a storage tower for the production of trifluoroacetic acid, which solves the problem that leakage at the tower connection point cannot be monitored and dealt with during the storage of trifluoroacetic acid.

[0005] This application provides a storage tower for producing trifluoroacetic acid, including a storage tower body. Both ends of the storage tower body are provided with sealing covers. The sealing covers and the ends of the storage tower body enclose a sealed space. An exhaust pipe extending to the outside is provided in the sealed space. The exhaust pipe is connected to a tail gas treatment system. An inlet pipe and an outlet pipe extend to the outside through the sealed space, respectively. A positive pressure air supply pipe is provided in the sealed space.

[0006] Preferably, the positive pressure air supply pipe includes an air supply pipe body installed on a sealing cover, a one-way damper is provided at one end of the air supply pipe body located inside the sealed space, a filter screen is provided at the other end of the air supply pipe body located outside the sealed space, and a fan is also provided inside the air supply pipe body.

[0007] Preferably, the storage tower body is provided with a corresponding inspection hole.

[0008] Preferably, the sealing cover is conical.

[0009] Preferably, the sealing cover is also equipped with an observation hole.

[0010] Preferably, a gas concentration sensor is installed within the sealed space.

[0011] Preferably, the storage tower is mounted on the ground via a support structure.

[0012] Preferably, the sealing cover is further provided with a valve hole for controlling the valves of the feed pipe and the discharge pipe.

[0013] As can be seen from the above technical solution, this application provides a storage tower for the production of trifluoroacetic acid. This application uses sealed covers at both ends of the storage tower to prevent the diffusion of leaked gas. The inlet and outlet pipes pass through the sealed space formed by the sealed covers and the storage tower body. A gas concentration sensor is used to detect any leaks. During installation, the valves of both the inlet and outlet pipes must be installed within the sealed space. During use, if a reading is detected inside the sealed cover, the exhaust pipe is opened, creating a negative pressure environment inside the sealed cover. Personnel are then assigned to perform maintenance, and this negative pressure must be maintained continuously. During routine maintenance, when the manhole needs to be opened, a positive pressure air supply pipe can be used to continuously maintain a positive pressure environment around the manhole, ensuring that the internal gas is consistent with the external environment. This ensures continuous airflow around the manhole, preventing the accumulation of harmful gases and improving safety after the sealed cover is installed.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. By setting up a sealing cover, a sealed space is formed at both ends of the tower body, which can not only monitor whether there is any leakage in the pipes and valves at the connection of the tower body, but also prevent the leakage of gas, thereby improving the safety of storage.

[0016] 2. By installing an exhaust pipe, it is connected to the factory's exhaust gas treatment system. Once a leak is detected, the sealed space can be kept under negative pressure to prevent the leaked gas from being discharged into the factory area.

[0017] 3. By installing positive pressure air supply pipes, the airflow at the manhole can be accelerated when the equipment is under maintenance or the manhole is opened, so that the surrounding environment is consistent with the state without the sealing cover, avoiding the accumulation of harmful gases and improving the safety of installing the sealing cover.

[0018] In summary, this application achieves the monitoring and protection of the trifluoroacetic acid storage tower through low-cost modification. It can form a sealed space at both ends of the trifluoroacetic acid storage tower, improve the accumulation effect of harmful gases, and thus monitor the pipeline connection. It can detect slight gas leaks and promptly deal with leaked gases after they occur, ensuring the safe operation of the trifluoroacetic acid storage tower and further ensuring the environmental safety of the plant. Attached Figure Description

[0019] To more clearly illustrate the technical solution of this application, the accompanying drawings used in the implementation examples will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained from these drawings without any creative effort.

[0020] Figure 1 This is a schematic diagram of the internal structure of a trifluoroacetic acid production storage tower proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the external structure of a trifluoroacetic acid production storage tower proposed in this utility model;

[0022] Figure 3 This is a schematic diagram of the positive pressure air supply pipe structure of a trifluoroacetic acid production storage tower proposed in this utility model;

[0023] In the diagram: 1. Sealing cover, 2. Inspection hole, 3. Exhaust pipe, 4. Observation hole, 5. Gas concentration sensor, 6. Feed pipe, 7. Discharge pipe, 8. Storage tower body, 9. Positive pressure air supply pipe, 91. Air supply pipe body, 92. One-way damper, 93. Fan, 94. Filter screen, 10. Manhole, 11. Support part, 12. Valve hole. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0025] See Figure 1-3A trifluoroacetic acid storage tower is disclosed for storing and inputting / outputting trifluoroacetic acid. The tower includes a storage tower body 8. It should be understood that the tower is also equipped with several conventional pressure gauges and other devices. Sealing covers 1 are installed at both ends of the storage tower body 8. The sealing covers 1 are conical in shape and can be made of PVC plastic. They are fixed to the storage tower body 8 by welding steel rings with screws. The conical shape minimizes the footprint and facilitates fabrication by bending existing PVC sheets. The sealing covers 1 and the ends of the storage tower body 8 enclose a sealed space. Pipes and equipment at both ends of the storage tower body 8 are located within this sealed space. An exhaust pipe 3 extending to the outside is installed within the sealed space. It should be understood that the exhaust pipe 3 is equipped with corresponding control valves. The exhaust pipe 3 connects to... Connected to the exhaust gas treatment system, which uses negative pressure adsorption, a negative pressure is created in the exhaust pipe 3 after the valve is opened. If a negative pressure adsorption exhaust gas treatment system is not installed in the plant area, a negative pressure pump is required to send the gas to the treatment system. The feed pipe 6 and discharge pipe 7 extend to the outside through the sealed space. The valves of the feed pipe 6 and discharge pipe 7 are located in the sealed space. A gas concentration sensor 5 is installed in the sealed space to protect and monitor the pipe connections, especially the valves. A positive pressure air supply pipe 9 is installed in the sealed space. When maintenance is required or the manhole 10 is opened, positive pressure gas can be blown into the sealed space through the positive pressure air supply pipe 9 to ensure gas flow and prevent internal gas accumulation, thereby increasing the safety of maintenance.

[0026] In this invention, the positive pressure air supply pipe 9 includes an air supply pipe body 91 installed on the sealing cover 1. The air supply pipe body 91 penetrates the sealing cover 1, and its two ends are located on the inner and outer sides of the sealed space, respectively. The end of the air supply pipe body 91 located inside the sealed space is provided with a one-way damper 92, that is, external air can only enter the sealed space through the air supply pipe body 91. When the gas in the sealed space overflows, the one-way damper 92 closes to prevent the gas in the sealed space from leaking out through the air supply pipe body 91. The end of the air supply pipe body 91 located outside the sealed space is provided with a filter screen 94 to prevent mosquitoes or other debris from entering the sealed space through the air supply pipe body 91. A fan 93 is also provided inside the air supply pipe body 91 to provide positive pressure gas to the sealed space.

[0027] In this invention, a corresponding inspection hole 2 is provided on the storage tower body 8 for inspecting the pipes or other devices on the storage tower body 8.

[0028] In this utility model, the sealing cover 1 is also equipped with an observation hole 4 for checking the internal condition of the sealing cover 1. Once a problem occurs, the internal condition can be observed without opening the inspection hole 2, so as to facilitate the formulation of specific maintenance methods.

[0029] In this utility model, the storage tower body 8 is installed on the ground by the support part 11, and a certain space is provided between the storage tower body 8 and the mounting surface so that the sealing cover 1 can be installed.

[0030] In this utility model, the sealing cover 1 is also provided with a valve hole 12 for controlling the valves of the feed pipe 6 and the discharge pipe 7. If both the feed pipe 6 and the discharge pipe 7 are manual valves, the valve hole 12 of the sealing cover 1 is used to control the opening of the manual valve. It should be understood that the valve hole 12 has a closing valve that can be opened, and the valve hole 12 is closed when not in use.

[0031] As can be seen from the above technical solution, this application uses sealing covers 1 at both ends of the storage tower 8 to prevent the diffusion of leaked gas. The inlet and outlet pipes pass through the sealed space formed by the sealing covers 1 and the storage tower 8. A gas concentration sensor 5 is used to detect any leakage. During installation, the valves of the inlet pipe 6 and the outlet pipe 7 must be installed within the sealed space. During use, if a reading is detected inside the sealing cover 1, the exhaust pipe 3 opens, drawing the sealing cover 1 into a negative pressure state, and personnel are assigned to perform maintenance. During this period, a continuous negative pressure state must be maintained. During routine maintenance, when the manhole 10 needs to be opened, the positive pressure air supply pipe 9 can continuously maintain the sealing cover 1 corresponding to the manhole 10 in a continuous positive pressure state, ensuring that the internal gas is consistent with the external environment. This ensures that the surrounding air at the location of the manhole 10 is in a continuous airflow state, preventing the accumulation of harmful gases and thus improving the safety after installing the sealing covers.

[0032] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope of this application is indicated by the claims.

[0033] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The embodiments of this application described above do not constitute a limitation on the scope of protection of this application.

Claims

1. A storage tower for producing trifluoroacetic acid, comprising a storage tower body (8), characterized in that: Both ends of the storage tower (8) are provided with sealing covers (1). The sealing covers (1) and the ends of the storage tower (8) form a sealed space. An exhaust pipe (3) extending to the outside is provided in the sealed space. The exhaust pipe (3) is connected to the exhaust gas treatment system. The feed pipe (6) and the discharge pipe (7) extend to the outside through the sealed space. A positive pressure air supply pipe (9) is provided in the sealed space.

2. The trifluoroacetic acid production storage tower according to claim 1, characterized in that, The positive pressure air supply pipe (9) includes an air supply pipe body (91) installed on the sealing cover (1). One-way damper (92) is provided at one end of the air supply pipe body (91) located in the sealed space, and a filter screen (94) is provided at the other end of the air supply pipe body (91) located outside the sealed space. A fan (93) is also provided inside the air supply pipe body (91).

3. A trifluoroacetic acid production storage tower according to claim 1, characterized in that, The storage tower body (8) is provided with a corresponding inspection hole (2).

4. A trifluoroacetic acid production storage tower according to claim 1, characterized in that, The sealing cover (1) is conical.

5. A trifluoroacetic acid production storage tower according to claim 1, characterized in that, An observation hole (4) is also installed on the sealing cover (1).

6. A trifluoroacetic acid production storage tower according to claim 1, characterized in that, A gas concentration sensor (5) is installed in the sealed space.

7. A trifluoroacetic acid production storage tower according to claim 1, characterized in that, The storage tower (8) is mounted on the ground via a support (11).

8. A trifluoroacetic acid production storage tower according to claim 1, characterized in that, The sealing cover (1) is also provided with a valve hole (12) for controlling the valves of the feed pipe (6) and the discharge pipe (7).

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