Catalytic fixed bed for producing gaseous extinguishing agent

Abstract

The utility model discloses a catalytic fixed bed for producing a gaseous extinguishing agent, which relates to the technical field of gaseous extinguishing agent production equipment and comprises a tank body, a heat exchange component and a catalyst. An upper partition plate and a lower partition plate are arranged in the tank body, the upper partition plate and the lower partition plate divide the interior of the tank body into three independent cavities, namely a feeding cavity, a heating cavity and a discharging cavity, the feeding cavity, the heating cavity and the discharging cavity are sequentially arranged from top to bottom, and a plurality of heat exchange assemblies are uniformly arranged in the heating cavity. According to the heat exchange assembly, a plurality of heat exchange fin plates are evenly arranged on the outer wall of an original heat exchange pipe, so that the contact area between the heat exchange assembly and steam is larger, namely the heat exchange area is larger, and therefore the heat exchange efficiency is improved. Therefore, the time of the steam in the heating cavity can be prolonged, the heat exchange time is longer, and the heat exchange efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of gas fire extinguishing agent production equipment, in particular to a catalytic fixed bed for gas fire extinguishing agent production. Background Art

[0002] Fire extinguishing agent refers to a substance that can effectively destroy combustion conditions and terminate combustion. According to its state characteristics, it can be divided into three categories: liquid fire extinguishing agent, solid fire extinguishing agent and gas fire extinguishing agent. The gaseous fire extinguishing agent mainly includes: carbon dioxide fire extinguishing agent, carbon tetrachloride fire extinguishing agent, difluoromonochloromonobromine (1211) methane fire extinguishing agent, trifluoromonobromine (1301) methane fire extinguishing agent, heptafluoropropane (HFC-227ea) fire extinguishing agent, trifluoromethane fire extinguishing agent, inert gas fire extinguishing agent, etc., using hexafluoropropylene (HFE) as the starting material, and reacting with hydrofluoric acid, CF3CF=CF2+HF→CF3-CFH-CF3, the reaction follows the Markov-Nikov law, the method is divided into gas phase method and liquid phase method, the gas phase method generally adopts hexafluoropropylene and anhydrous hydrofluoric acid to be gasified and then mixed and preheated, and then passed through a catalytic fixed bed (tubular fixed bed reactor) equipped with a catalyst to react, and then absorb excess hydrofluoric acid, cool, separate and purify. However, the existing catalytic fixed bed heat exchange tube structure (such as patent authorization announcement number CN A benzene gas phase hydrogenation fixed bed tube reaction disclosed in 210410644 U is too simple, the heat exchange efficiency is not high enough, and it is not energy-efficient enough. Utility Model Content

[0003] The utility model aims to provide a catalytic fixed bed for producing gas fire extinguishing agent to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A catalytic fixed bed for producing a gas fire extinguishing agent comprises a tank body, a heat exchange component and a catalyst. An upper partition plate and a lower partition plate are installed inside the tank body, and the upper partition plate and the lower partition plate divide the inside of the tank body into three independent chambers: a feed chamber, a heating chamber and a discharge chamber. The feed chamber, the heating chamber and the discharge chamber are arranged in sequence from top to bottom. A plurality of heat exchange components are evenly arranged in the heating chamber. The top and bottom ends of the heat exchange components respectively penetrate the upper partition plate and the lower partition plate. The heat exchange component is filled with a catalyst. A breathable mesh plate is installed at the bottom end of the heat exchange component. An air inlet and an exhaust port are respectively provided at the top and bottom ends of the tank body. A steam inlet and a steam outlet are respectively provided on the inner walls on both sides of the tank body, and a baffle is provided in the heating chamber.

[0006] As a further solution of the utility model: the heat exchange assembly includes a heat exchange tube and a heat exchange fin plate, and the heat exchange fin plates are fixed on the outer wall of the tank body at equal intervals from top to bottom.

[0007] As a further solution of the utility model: the heat exchange fin is annular.

[0008] As a further solution of the utility model: the steam inlet is arranged at the upper part of the side of the tank body, the steam outlet is arranged at the lower part of the side of the tank body, and the steam inlet and the steam outlet are both connected to the heating chamber.

[0009] As a further solution of the utility model: an observation hole is installed on the upper part of the tank body, and transparent high-temperature resistant tempered glass is installed in the observation hole.

[0010] As a further solution of the utility model: the baffles are fixed on the inner wall of the heating chamber in an up-and-down staggered manner, and the baffles are arc-shaped plates.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model sets a heat exchange component, which is a heat exchange fin plate evenly arranged on the outer wall of the original heat exchange tube, so that the contact area between the heat exchange component and the steam is larger, that is, the heat exchange area is larger, thereby improving the heat exchange efficiency.

[0013] 2. The utility model provides a baffle which can guide the steam to flow in a zigzag shape in the heating chamber, thereby prolonging the time the steam stays in the heating chamber, making the heat exchange time longer and the heat exchange efficiency higher.

[0014] 3. The utility model installs a breathable mesh plate at the bottom of the heat exchange tube, and the front of the breathable mesh plate is trumpet-shaped, which can make the air outlet area larger and make the gas material pass better. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the internal structure of a catalytic fixed bed used in the production of gas fire extinguishing agents.

[0016] Figure 2 This is the overall appearance of a catalytic fixed bed used in the production of gas fire extinguishing agents.

[0017] Figure 3 A catalytic fixed bed for the production of gas fire extinguishing agent Figure 1 Schematic diagram of the structure of the heat exchange component.

[0018] 1. Tank body; 2. Upper partition plate; 3. Lower partition plate; 4. Heating chamber; 5. Feed chamber; 6. Discharge chamber; 7. Baffle; 8. Heat exchange assembly; 801. Heat exchange tube; 802. Heat exchange fin plate; 9. Catalyst; 10. Air inlet; 11. Exhaust port; 12. Steam inlet; 13. Steam outlet; 14. Observation hole; 15. Breathable mesh plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3 In the embodiment of the utility model, a catalytic fixed bed for producing a gas fire extinguishing agent comprises a tank body 1, a heat exchange component 8 and a catalyst 9. An upper partition plate 2 and a lower partition plate 3 are installed inside the tank body 1. The upper partition plate 2 and the lower partition plate 3 divide the inside of the tank body 1 into three independent chambers, namely, a feeding chamber 5, a heating chamber 4 and a discharging chamber 6. The feeding chamber 5, the heating chamber 4 and the discharging chamber 6 are arranged in sequence from top to bottom. A plurality of heat exchange components 8 are evenly arranged in the heating chamber 4. The top and bottom ends of the heat exchange components 8 respectively penetrate the upper partition plate 2 and the lower partition plate 3. The heat exchange component 8 is filled with a catalyst 9. The heat exchange component 8 comprises a heat exchange tube 801 and a heat exchange fin plate 802. The heat exchange fin plate 802 is fixed on the outer wall of the tank body 1 at equal intervals from top to bottom. On the upper side, the heat exchange fin 802 is annular. Such a design can make the contact area between the heat exchange fin 802 and the heat exchange tube 801 larger and the heat conduction effect better. The top and bottom ends of the tank body 1 are respectively provided with an air inlet 10 and an exhaust port 11, and the inner walls on both sides of the tank body 1 are respectively provided with a steam inlet 12 and a steam outlet 13. The steam inlet 12 is arranged on the upper side of the tank body 1, and the steam outlet 13 is arranged on the lower side of the tank body 1. The steam inlet 12 and the steam outlet 13 are both connected to the heating chamber 4. The reaction temperature can be increased by adding steam, so that the reaction effect is better. An observation hole 14 is installed on the upper part of the tank body 1, and the observation hole 14 is equipped with transparent high-temperature resistant tempered glass. The observation hole 14 can facilitate personnel to observe the reaction situation in the tank body 1.

[0021] See also Figure 1 and Figure 3 A breathable mesh plate 15 is installed at the bottom of the heat exchange component 8, and the front of the breathable mesh plate 15 is trumpet-shaped, which can make the air outlet area larger and make the gas material pass better.

[0022] See also Figure 1 A baffle 7 is provided in the heating chamber 4. The baffle 7 is fixed on the inner wall of the heating chamber 4 in an up-and-down staggered manner. The baffle 7 is an arc-shaped plate. The baffle 7 can guide the steam to flow in a zigzag shape in the heating chamber 4, which can extend the time the steam stays in the heating chamber 4, making the heat exchange time longer and the heat exchange efficiency higher.

[0023] The working principle of the utility model is:

[0024] When in use, the gas material enters the feed chamber 5 from the air inlet 10, and then enters each heat exchange tube 801 from the feed chamber 5. The gas flows in the pores between the catalyst 9 particles and undergoes a chemical reaction. At the same time, steam enters the heating chamber 4 from the steam inlet 12. The heat in the steam flows downward in a zigzag shape driven by the baffle 7, and is finally discharged from the steam outlet 13. During the flow, the steam is in full contact with the outer surface of the heat exchange component 8. The heat in the steam is transferred to the catalyst 9 and the gas material in the heat exchange tube 801 through the heat exchange fins 802 and the heat exchange tube 801, so that the reaction temperature is reached. The reacted gas is discharged from the breathable mesh plate 15 into the discharge chamber 6, and is finally discharged from the exhaust port 11.

[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A catalytic fixed bed for producing a gas fire extinguishing agent, comprising a tank (1), a heat exchange component (8) and a catalyst (9), Features: An upper partition plate (2) and a lower partition plate (3) are installed inside the tank body (1), and the upper partition plate (2) and the lower partition plate (3) divide the inside of the tank body (1) into three independent chambers, namely, a feed chamber (5), a heating chamber (4) and a discharge chamber (6). The feed chamber (5), the heating chamber (4) and the discharge chamber (6) are arranged in sequence from top to bottom. A plurality of heat exchange components (8) are evenly arranged in the heating chamber (4), and the top of the heat exchange component (8) The top and bottom ends of the tank body (1) respectively penetrate the upper partition plate (2) and the lower partition plate (3), the heat exchange component (8) is filled with a catalyst (9), the bottom end of the heat exchange component (8) is installed with a breathable mesh plate (15), the top and bottom ends of the tank body (1) are respectively provided with an air inlet (10) and an exhaust port (11), the inner walls on both sides of the tank body (1) are respectively provided with a steam inlet (12) and a steam outlet (13), and the heating chamber (4) is provided with a baffle (7).

2. A catalytic fixed bed for producing a gas fire extinguishing agent according to claim 1, Features: The heat exchange assembly (8) comprises a heat exchange tube (801) and a heat exchange fin plate (802), and the heat exchange fin plates (802) are fixed on the outer wall of the tank body (1) at equal intervals from top to bottom.

3. A catalytic fixed bed for producing a gas fire extinguishing agent according to claim 2, Features: The heat exchange fin (802) is annular.

4. A catalytic fixed bed for producing a gas fire extinguishing agent according to claim 1, Features: The steam inlet (12) is arranged at the upper part of the side of the tank body (1), and the steam outlet (13) is arranged at the lower part of the side of the tank body (1). Both the steam inlet (12) and the steam outlet (13) are connected to the heating chamber (4).

5. A catalytic fixed bed for producing a gas fire extinguishing agent according to claim 1, Features: An observation hole (14) is installed on the upper part of the tank body (1), and transparent high-temperature resistant tempered glass is installed in the observation hole (14).

6. A catalytic fixed bed for producing a gas fire extinguishing agent according to claim 1, Features: The baffles (7) are fixed on the inner wall of the heating chamber (4) in an alternating manner up and down, and the baffles (7) are arc-shaped plates.

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