Hydrogen delivery conduit

Abstract

This utility model discloses a hydrogen delivery pipeline, including a hydrogen delivery pipe, a concentric reducer, an electrostatic bridging mechanism, and an inlet for a quartz lamp head in a synthesis furnace. The end of the hydrogen delivery pipe is connected to the concentric reducer, and the end of the concentric reducer is connected to the inlet of the quartz lamp head in the synthesis furnace. The diameter of the concentric reducer at the inlet end of the quartz lamp head is smaller than the diameter at the end of the hydrogen delivery pipe. An electrostatic bridging mechanism for static elimination is installed on the outer side of the concentric reducer at the inlet end of the quartz lamp head. The beneficial effects of this utility model are: by adding a concentric reducer, the hydrogen delivery pipeline is locally narrowed near the quartz lamp head in the synthesis furnace, increasing the hydrogen flow rate. The resulting turbulence effectively enhances the scouring and carrying capacity of the hydrogen flow, making it difficult for sodium chloride particles contained in the hydrogen to settle and adhere to the inner wall of the quartz lamp head, thereby significantly reducing scaling and clogging from the root cause.

Description

Technical Field

[0001] This utility model relates to the field of chemical synthesis equipment technology, specifically a hydrogen transmission pipeline. Background Technology

[0002] In existing ion-exchange membrane electrolysis processes for producing caustic soda, the byproduct hydrogen gas contains a small amount of sodium chloride. After treatment, it is sent to the synthesis furnace to react with chlorine gas to produce hydrogen chloride gas. When the hydrogen gas burns through the quartz lamp head in the synthesis furnace, the sodium chloride component forms scale and adheres to the inner wall of the lamp head, gradually clogging it as production progresses. This affects the flow rate and ratio, resulting in substandard hydrogen chloride purity. Furthermore, the eight synthesis furnaces in the hydrogen chloride synthesis unit use metal flame arresters, resulting in approximately 30 lamp head failures and 10 pipeline flame arresters being consumed annually. Each furnace requires an average of one shutdown for cleaning per month, totaling 96 shutdowns per year. Frequent equipment start-ups and shutdowns for cleaning not only increase maintenance costs but also pose safety risks to personnel and disrupt production continuity. Therefore, we propose a hydrogen gas delivery pipeline. Utility Model Content

[0003] The purpose of this invention is to provide a hydrogen transport pipeline to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a hydrogen delivery pipeline, comprising a hydrogen delivery pipe, a concentric reducer, an electrostatic bridging mechanism, and an inlet for a quartz lamp head for a synthesis furnace. The end of the hydrogen delivery pipe is connected to the concentric reducer, and the end of the concentric reducer is connected to the inlet of the quartz lamp head for the synthesis furnace. The diameter of the concentric reducer at the inlet end of the quartz lamp head for the synthesis furnace is smaller than the diameter of the concentric reducer at the end of the hydrogen delivery pipe. An electrostatic bridging mechanism for static elimination is installed on the outer side of the concentric reducer at the inlet end of the quartz lamp head for the synthesis furnace.

[0005] Preferably, the electrostatic bridging mechanism includes a first connecting half-ring, a second connecting half-ring, a control box, and a grounding wire. The concentric reducer is located on the outside of the air inlet end of the quartz lamp head of the synthesis furnace and is connected to the first connecting half-ring and the second connecting half-ring. One end of the first connecting half-ring and the second connecting half-ring are hinged together. The other end of the first connecting half-ring is integrally connected to a first connecting lug. The other end of the second connecting half-ring is integrally connected to a second connecting lug. The control box is installed at the bottom of the second connecting lug. The bottom of the control box is connected to a grounding wire, and the end of the grounding wire is equipped with a mounting plate.

[0006] Preferably, the control box is equipped with a storage battery and a wiring terminal, and the end of the grounding wire away from the mounting plate extends into the control box and connects to the wiring terminal.

[0007] Preferably, the ends of the first connecting ear and the second connecting ear are connected to a mounting box. The mounting box is in the form of an L-shape. The second connecting ear is snapped into the L-shaped end of the mounting box. A sliding plate is slidably connected inside the mounting box. Sliding rods are symmetrically fixed to the top of the sliding plate. The tops of the two sliding rods slide through the mounting box and are fixed to a positioning plate. A spring is sleeved on the outer side of the sliding rod between the top of the sliding plate and the inner wall of the mounting box. The positioning plate contacts the top of the first connecting ear.

[0008] Preferably, a fixing rod is fixedly connected to the L-shaped end of the mounting box and the bottom of the positioning plate. A fixing hole is opened at the top of the first connecting ear and the bottom of the second connecting ear. The two fixing rods are respectively engaged in the fixing holes of the first connecting ear and the second connecting ear.

[0009] Preferably, both the hydrogen delivery pipe and the concentric reducer are provided with a first connecting flange at their ends, and the two first connecting flanges are fixedly connected together. The end of the concentric reducer away from the first connecting flange and the end of the gas inlet of the quartz lamp head of the synthesis furnace are provided with a second connecting flange, and the two second connecting flanges are fixedly connected together.

[0010] Preferably, a pull ring is provided on the top of the positioning plate.

[0011] Preferably, one end of the concentric reducer is snapped into the air inlet of the quartz lamp head of the synthesis furnace, and a sealing ring is provided on the inner wall of the air inlet of the quartz lamp head of the synthesis furnace on the outside of the concentric reducer.

[0012] Compared with existing technologies, the beneficial effects of this invention are as follows: By adding a concentric reducer, the hydrogen delivery pipeline is locally narrowed near the quartz lamp head of the synthesis furnace, significantly increasing the hydrogen flow velocity from 15 m / s to 26.7 m / s. Utilizing the turbulent characteristics generated by this high speed, the scouring and carrying capacity of the hydrogen flow is effectively enhanced, making it difficult for sodium chloride particles to settle and adhere to the inner wall of the quartz lamp head. This significantly reduces scaling and clogging at the source, lowers the frequency of furnace shutdowns for cleaning, ensures a stable hydrogen to chlorine flow ratio, and guarantees the purity of hydrogen chloride gas and continuous, stable production operation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the mounting box connection structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the internal structure of the mounting box of this utility model;

[0016] Figure 4 This is a schematic diagram of the fixing rod connection structure of this utility model;

[0017] Figure 5 This is a schematic diagram of the internal structure of the control box of this utility model.

[0018] In the diagram: 1. Hydrogen delivery pipe; 2. Concentric reducer; 3. Static bridging mechanism; 4. Gas inlet of the quartz lamp holder for the synthesis furnace; 5. First connecting flange; 6. Second connecting flange; 7. First connecting half-ring; 8. Second connecting half-ring; 9. Control box; 10. Grounding wire; 11. First connecting lug; 12. Second connecting lug; 13. Mounting box; 14. Slide plate; 15. Slide rod; 16. Spring; 17. Positioning plate; 18. Fixing rod; 19. Battery; 20. Terminal block; 21. Mounting plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1 and Figure 2 This utility model provides a technical solution: a hydrogen delivery pipeline, including a hydrogen delivery pipe 1, a concentric reducer 2, an electrostatic bridging mechanism 3, and an air inlet 4 for a quartz lamp head for a synthesis furnace. The end of the hydrogen delivery pipe 1 is connected to the concentric reducer 2, and the end of the concentric reducer 2 is connected to the air inlet 4 of the quartz lamp head for a synthesis furnace.

[0021] The diameter of the concentric reducer 2 at the air inlet 4 of the quartz lamp head of the synthesis furnace is smaller than the diameter of the concentric reducer 2 at the hydrogen delivery pipe 1. An electrostatic bridging mechanism 3 for static elimination is installed on the outside of the concentric reducer 2 at the air inlet 4 of the quartz lamp head of the synthesis furnace.

[0022] Please see Figure 1 and Figure 2The electrostatic bridging mechanism 3 includes a first connecting half-ring 7, a second connecting half-ring 8, a control box 9, and a grounding wire 10. The concentric reducer 2 is located on the outside of one end of the air inlet 4 of the quartz lamp head of the synthesis furnace and is connected to the first connecting half-ring 7 and the second connecting half-ring 8. One end of the first connecting half-ring 7 and the second connecting half-ring 8 are hinged together. The other end of the first connecting half-ring 7 is integrally connected to the first connecting lug 11. The other end of the second connecting half-ring 8 is integrally connected to the second connecting lug 12. The control box 9 is installed at the bottom of the second connecting lug 12. The grounding wire 10 is connected to the bottom of the control box 9, and the end of the grounding wire 10 is installed with a mounting plate 21.

[0023] It should be noted that, in use, a concentric reducer 2 is added between the hydrogen delivery pipe 1 and the air inlet 4 of the quartz lamp head of the synthesis furnace. The hydrogen delivery pipe 1 and the concentric reducer 2 are fixedly connected by two first connecting flanges 5, and the concentric reducer 2 and the air inlet 4 of the quartz lamp head of the synthesis furnace are fixedly connected by two second connecting flanges 6. When connecting the concentric reducer 2 and the air inlet 4 of the quartz lamp head of the synthesis furnace, the end of the concentric reducer 2 is inserted into the air inlet of the quartz lamp head of the synthesis furnace. Inside section 4, after the concentric reducer 2 is connected to the air inlet 4 of the quartz lamp head of the synthesis furnace, one end of the concentric reducer 2 inside the air inlet 4 of the quartz lamp head contacts the sealing ring on the inner wall of the air inlet 4 of the quartz lamp head, resulting in a better sealing effect at the connection. In the pipeline system for hydrogen entering the quartz lamp head of the synthesis furnace, a hydrogen delivery pipe 1 (DN200 pipe) is used for transportation. After the hydrogen enters the concentric reducer 2, the air inlet is reduced from DN200 pipe to DN150. The hydrogen pressure is maintained at 0.1 MPa, the flow rate is 1700 cubic meters per hour, and the flow velocity in the DN200 pipe is 15 kWh / s, which is increased to 26.7 kWh / s when reduced to DN150. Utilizing the turbulent characteristics at this flow velocity, most sodium chloride particles in the hydrogen are carried away by the airflow, thereby reducing their adhesion to the inner wall of the quartz lamp head. At the same time, the length of the DN150 pipe is strictly controlled to keep it as close as possible to the inlet of the synthesis furnace lamp head.

[0024] Please see Figure 5 The control box 9 is equipped with a storage battery 19 and a terminal block 20. The end of the grounding wire 10 away from the mounting plate 21 extends into the control box 9 and is connected to the terminal block 20.

[0025] It should be noted that the grounding wire 10 and terminal 20 set by the electrostatic bridging mechanism 3 can safely discharge the static electricity generated during pipeline operation and eliminate safety hazards.

[0026] Please see Figure 2 and Figure 3The first connecting ear 11 and the second connecting ear 12 are connected to the mounting box 13. The mounting box 13 is L-shaped. The second connecting ear 12 is snapped into the L-shaped end of the mounting box 13. The mounting box 13 is slidably connected to the sliding plate 14. The top of the sliding plate 14 is symmetrically fixed with the sliding rod 15. The top of the two sliding rods 15 slides through the mounting box 13 and is fixed with the positioning plate 17. The outer side of the sliding rod 15 is fitted with a spring 16 between the top of the sliding plate 14 and the inner wall of the mounting box 13. The positioning plate 17 is in contact with the top of the first connecting ear 11.

[0027] It should be noted that when connecting the first connecting half ring 7 and the second connecting half ring 8, first rotate the first connecting half ring 7 and the second connecting half ring 8 so that they are fitted onto the outside of the concentric reducer 2. After the first connecting half ring 7 and the second connecting half ring 8 are connected, their inner walls contact the outside of the concentric reducer 2. Connect the first connecting ear 11 and the second connecting ear 12. Then, the mounting box 13 is fitted to the ends of the first connecting ear 11 and the second connecting ear 12. Pull up the positioning plate 17 so that the first connecting ear 11 and the second connecting ear 12 are connected between the positioning plate 17 and the L-shaped end of the mounting box 13, thereby securing the first connecting ear 11 and the second connecting ear 12 together.

[0028] Please see Figure 4 Fixing rods 18 are fixedly connected to the L-shaped end of the mounting box 13 and the bottom of the positioning plate 17. Fixing holes are opened at the top of the first connecting ear 11 and the bottom of the second connecting ear 12. The two fixing rods 18 are respectively snapped into the fixing holes of the first connecting ear 11 and the second connecting ear 12.

[0029] It should be noted that when the first connecting ear 11 and the second connecting ear 12 are connected between the positioning plate 17 and the L-shaped end of the mounting box 13, the fixing rod 18 on the L-shaped end of the positioning plate 17 and the mounting box 13 cooperates to be inserted into the fixing hole on the first connecting ear 11 and the second connecting ear 12, thereby strengthening the connection between the first connecting ear 11 and the second connecting ear 12.

[0030] Please see Figure 1 Both the hydrogen delivery pipe 1 and the concentric reducer 2 are provided with a first connecting flange 5 at their ends, and the two first connecting flanges 5 are fixedly connected to each other. The end of the concentric reducer 2 away from the first connecting flange 5 and the end of the gas inlet 4 of the quartz lamp head of the synthesis furnace are provided with a second connecting flange 6, and the two second connecting flanges 6 are fixedly connected to each other.

[0031] It should be noted that the installation of the first connecting flange 5 and the second connecting flange 6 reinforces the connection between the hydrogen delivery pipe 1, the concentric reducer 2 and the gas inlet 4 of the quartz lamp head of the synthesis furnace.

[0032] Please see Figure 3 A pull ring is provided on the top of the positioning plate 17.

[0033] It should be noted that, by using the pull ring, the distance between the positioning plate 17 and the mounting box 13 can be controlled simply by pulling up the pull ring on the positioning plate 17.

[0034] Please see Figure 2 The concentric reducer 2 is located at one end of the air inlet 4 of the quartz lamp head of the synthesis furnace and is snapped into the air inlet 4 of the quartz lamp head of the synthesis furnace. A sealing ring is provided on the inner wall of the air inlet 4 of the quartz lamp head of the synthesis furnace on the outside of the concentric reducer 2.

[0035] It should be noted that the sealing ring ensures a sealed connection between the concentric reducer 2 and the air inlet 4 of the quartz lamp head of the synthesis furnace, preventing gas from overflowing.

[0036] In summary, this invention, without affecting the precise control of the optimal combustion state of chlorine and hydrogen, can reduce the scaling and clogging of sodium chloride in the lamp head, reduce the frequency of furnace shutdown for lamp head cleaning, and extend the service life of the lamp head and flame arrester, thereby reducing production costs, improving production continuity, and reducing personnel safety risks.

[0037] Furthermore, the terms “first,” “second,” “third,” and “fourth” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as “first,” “second,” “third,” or “fourth” may explicitly or implicitly include at least one of those features.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydrogen transport pipeline, characterized in that, The device includes a hydrogen delivery pipe (1), a concentric reducer (2), an electrostatic bridging mechanism (3), and an air inlet (4) for the quartz lamp head of the synthesis furnace. The end of the hydrogen delivery pipe (1) is connected to the concentric reducer (2), and the end of the concentric reducer (2) is connected to the air inlet (4) of the quartz lamp head of the synthesis furnace. The diameter of the concentric reducer (2) at the end of the air inlet (4) of the quartz lamp head of the synthesis furnace is smaller than the diameter of the concentric reducer (2) at the end of the hydrogen delivery pipe (1). An electrostatic bridging mechanism (3) for static elimination is installed on the outside of the concentric reducer (2) at the end of the air inlet (4) of the quartz lamp head of the synthesis furnace.

2. The hydrogen transmission pipeline according to claim 1, characterized in that: The electrostatic bridging mechanism (3) includes a first connecting half-ring (7), a second connecting half-ring (8), a control box (9), and a grounding wire (10). The concentric reducer (2) is located on the outside of the air inlet (4) of the quartz lamp head of the synthesis furnace, and the first connecting half-ring (7) and the second connecting half-ring (8) are connected. One end of the first connecting half-ring (7) and the second connecting half-ring (8) are hinged together. The other end of the first connecting half-ring (7) is integrally connected to a first connecting ear (11). The other end of the second connecting half-ring (8) is integrally connected to a second connecting ear (12). The control box (9) is installed at the bottom of the second connecting ear (12). The bottom of the control box (9) is connected to a grounding wire (10), and the end of the grounding wire (10) is installed with a mounting plate (21).

3. A hydrogen transport pipeline according to claim 2, characterized in that: The control box (9) is equipped with a storage battery (19) and a terminal block (20). The end of the grounding wire (10) away from the mounting plate (21) extends into the control box (9) and connects to the terminal block (20).

4. A hydrogen transmission pipeline according to claim 2, characterized in that: The first connecting ear (11) and the second connecting ear (12) are connected to the end of the mounting box (13). The mounting box (13) is in an L-shaped structure. The second connecting ear (12) is snapped into the L-shaped end of the mounting box (13). The mounting box (13) is slidably connected to the sliding plate (14). The top of the sliding plate (14) is symmetrically fixed with the sliding rod (15). The tops of the two sliding rods (15) slide through the mounting box (13) and are fixed with the positioning plate (17). The outer side of the sliding rod (15) is fitted with a spring (16) between the top of the sliding plate (14) and the inner wall of the mounting box (13). The positioning plate (17) is in contact with the top of the first connecting ear (11).

5. A hydrogen transmission pipeline according to claim 4, characterized in that: Fixing rods (18) are fixedly connected to the L-shaped end of the mounting box (13) and the bottom of the positioning plate (17). Fixing holes are opened at the top of the first connecting ear (11) and the bottom of the second connecting ear (12). The two fixing rods (18) are respectively snapped into the fixing holes of the first connecting ear (11) and the second connecting ear (12).

6. A hydrogen transmission pipeline according to claim 1, characterized in that: The ends of the hydrogen delivery pipe (1) and the concentric reducer (2) are provided with first connecting flanges (5), and the two first connecting flanges (5) are fixedly connected to each other. The end of the concentric reducer (2) away from the first connecting flange (5) and the end of the gas inlet (4) of the quartz lamp head of the synthesis furnace are provided with second connecting flanges (6), and the two second connecting flanges (6) are fixedly connected to each other.

7. A hydrogen transmission pipeline according to claim 4, characterized in that: The top of the positioning plate (17) is provided with a pull ring.

8. A hydrogen transmission pipeline according to claim 1, characterized in that: The concentric reducer (2) is located at one end of the air inlet (4) of the quartz lamp head of the synthesis furnace and is snapped into the air inlet (4) of the quartz lamp head of the synthesis furnace. A sealing ring is provided on the inner wall of the air inlet (4) of the quartz lamp head of the synthesis furnace on the outside of the concentric reducer (2).

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