Natural gas hydrogen production integrated device with temperature control

Abstract

The utility model discloses a kind of natural gas hydrogen production integrated devices with temperature control, including preparation box, the side of preparation box is fixedly installed with side box one, the inside fixed mounting of side box one has burner, the below of preparation box is fixedly installed with bottom box, the both sides of bottom box front end are respectively arranged with cold gas pipe, the both sides of preparation box inside below are respectively fixedly installed with shower nozzle, one end of cold gas pipe extends into the inside of bottom box and is fixedly connected with shower nozzle by penetrating into the bottom of preparation box, the both sides of preparation box inside top are respectively fixedly installed with temperature sensor. Its realized the ability of cooling according to demand, increased practicality, to solve in the heat release reaction of natural gas hydrogen production, unable to respond to cooling demand quickly, easy to cause reaction deviates from expected path, the problem of poor practicality.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen production equipment technology, specifically to an integrated natural gas hydrogen production device with temperature control. Background Technology

[0002] Hydrogen is a colorless, odorless, non-toxic, and highly flammable diatomic gas molecule. Due to its high energy density, zero emissions, and wide availability, hydrogen is considered a key energy carrier for achieving carbon neutrality. Hydrogen is generally produced by reacting natural gas.

[0003] For example, the authorized patent with announcement number CN215924394U (a natural gas autothermal reforming hydrogen production device) includes a hydrogen production device box, a side plate, a burner, an autothermal reforming reactor, a support plate, a slider, a sliding rod, a side pull baffle, and a snap-fit ​​assembly. The sliding rod is located on the inner side wall of the bottom of the hydrogen production device box, the slider is slidably sleeved on the sliding rod, the support plate penetrates the side wall of the hydrogen production box and is located on the slider, the side plate is located on the support plate, the side pull baffle penetrates the side wall of the hydrogen production device box and is located on the support plate, and the burner is located on the support plate.

[0004] While the aforementioned existing technologies facilitate the maintenance of internal components, they lack a temperature control structure. Consequently, in the exothermic reaction of natural gas to hydrogen production, they cannot quickly respond to cooling demands, easily causing the reaction to deviate from the expected path, resulting in poor practicality. Therefore, the market urgently needs to develop an integrated natural gas to hydrogen production device with temperature control to help people solve the existing problems. Utility Model Content

[0005] The purpose of this invention is to provide an integrated natural gas hydrogen production device with temperature control, in order to solve the problem mentioned in the background art that in the exothermic reaction of natural gas hydrogen production, it is impossible to respond quickly to the cooling demand, which easily causes the reaction to deviate from the expected path and has poor practicality.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an integrated natural gas hydrogen production device with temperature control, comprising a preparation box, a side box 1 fixedly installed on one side of the preparation box, a burner fixedly installed inside the side box 1, a bottom box fixedly installed below the preparation box, cold gas pipes symmetrically arranged on both sides of the front end of the bottom box, nozzles symmetrically fixedly installed on both sides of the lower interior of the preparation box, one end of the cold gas pipe extending into the interior of the bottom box and penetrating the bottom of the preparation box and fixedly connected to the nozzle, and temperature sensors symmetrically fixedly installed on both sides of the upper interior of the preparation box.

[0007] Preferably, a reaction tube is fixedly installed in the middle of the upper part of the preparation box, the inside of the reaction tube is filled with a honeycomb nickel-based catalyst, an inlet pipe is fixedly installed on one side of the upper part of the preparation box, and an outlet pipe is fixedly installed on the other side of the upper part of the preparation box. The inlet pipe and the outlet pipe are respectively fixedly connected to the two ends of the reaction tube.

[0008] Preferably, a stirring assembly is provided in the middle of the lower part of the preparation box. The stirring assembly includes a stirring column and blades. The stirring column is rotatably connected to the preparation box, and two blades are provided and fixedly installed on the outside of the stirring column.

[0009] Preferably, an electric motor is installed in the middle of the upper part of the bottom box, and the electric motor is fixedly connected to the preparation box, and the output end of the electric motor is fixedly connected to the stirring column.

[0010] Preferably, a second side chamber is fixedly installed on one side of the preparation box. A flue gas vent is provided on one side of the preparation box and is connected to the second side chamber. A heat exchange tube is provided inside the second side chamber. A water inlet pipe is fixedly installed on the upper side of one side of the second side chamber. A water outlet pipe is fixedly installed on the lower side of one side of the second side chamber. The water outlet pipe and the water inlet pipe are respectively fixedly connected to the two ends of the heat exchange tube. A flue gas vent is fixedly installed on the upper side of the second side chamber.

[0011] Preferably, a diversion plate is fixedly installed inside the second side box, and multiple diversion plates are provided, with the multiple diversion plates arranged vertically in a staggered manner.

[0012] Preferably, mounting brackets are symmetrically fixedly installed on both sides below the preparation box, and a partition is fixedly installed on one side inside the preparation box.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) This utility model can monitor the reaction temperature in real time by symmetrically installing temperature sensors on both sides of the upper part of the preparation box. At the same time, a bottom box and a cold gas pipe are set at the bottom of the preparation box. The cold gas pipe is connected to the nozzle in the preparation box, which can quickly deliver cold gas through the cold gas pipe and spray it out through the nozzle to quickly reduce the reaction temperature. This effectively avoids the reaction from deviating from the expected path due to overheating, ensures the stable progress of the hydrogen production reaction, and increases its practicality.

[0015] (2) By providing a stirring component, which includes a stirring column and blades, the present invention can promote the uniform distribution of heat in the reaction system by driving the stirring column and blades to rotate, better maintain the stability of the reaction temperature, prevent abnormal reaction caused by local overheating or overcooling, and increase its practicality.

[0016] (3) This utility model utilizes the waste heat of high-temperature flue gas generated during the hydrogen production process from natural gas to exchange heat with the water in the heat exchange tube, thereby achieving effective recovery and utilization of waste heat and increasing its practicality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an integrated natural gas hydrogen production device with temperature control according to the present invention.

[0018] Figure 2 This is a cross-sectional view of a natural gas-to-hydrogen integrated device with temperature control according to the present invention.

[0019] Figure 3 This is an enlarged schematic diagram of part A of this utility model;

[0020] Figure 4 This is a schematic diagram of the agitation component of this utility model.

[0021] In the diagram: 1. Preparation chamber; 101. Exhaust vent; 2. Mounting frame; 3. Inlet pipe; 4. Reaction tube; 5. Outlet pipe; 6. Side chamber one; 7. Burner; 8. Temperature sensor; 9. Bottom chamber; 10. Cooling pipe; 11. Nozzle; 12. Side chamber two; 13. Water outlet pipe; 14. Heat exchanger tube; 15. Water inlet pipe; 16. Exhaust pipe; 17. Motor; 18. Stirring assembly; 1801. Stirring column; 1802. Blade; 19. Drainage plate; 20. Baffle. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-4This utility model provides an embodiment of a natural gas hydrogen production integrated device with temperature control, comprising a preparation box 1, a side box 6 fixedly installed on one side of the preparation box 1, a burner 7 fixedly installed inside the side box 6, a bottom box 9 fixedly installed below the preparation box 1, cold air pipes 10 symmetrically arranged on both sides of the front end of the bottom box 9, the cold air pipes 10 being connected to a cold air supply device, nozzles 11 symmetrically fixedly installed on both sides of the lower interior of the preparation box 1, one end of the cold air pipe 10 extending into the interior of the bottom box 9 and penetrating the bottom of the preparation box 1 and fixedly connected to the nozzle 11, and temperature sensors 8 symmetrically fixedly installed on both sides of the upper interior of the preparation box 1, the temperature sensors 8 being WRSP-130 temperature sensors.

[0024] By symmetrically installing temperature sensors 8 inside the preparation chamber, the reaction temperature changes can be monitored in real time, which is beneficial for precise temperature control. At the same time, the linkage design of the cooling pipe 10 and the nozzle 11 can quickly respond to the cooling demand and directly inject cooling gas into the reaction area, avoiding the sudden temperature rise or reaction path deviation caused by the runaway exothermic reaction, thus realizing temperature control capability and increasing practicality.

[0025] Please see Figure 2 A reaction tube 4 is fixedly installed in the middle of the upper part of the preparation box 1. The inside of the reaction tube 4 is filled with a honeycomb nickel-based catalyst. An inlet pipe 3 is fixedly installed on one side of the upper part of the preparation box 1, and an outlet pipe 5 is fixedly installed on the other side of the upper part of the preparation box 1. The inlet pipe 3 and the outlet pipe 5 are respectively fixedly connected to the two ends of the reaction tube 4.

[0026] The honeycomb structure has a large specific surface area, which can increase the contact area between the catalyst and the reactant gas, making the reaction more complete and efficient. At the same time, an inlet pipe is fixedly installed on one side of the preparation box and an outlet pipe is fixedly installed on the other side. The inlet and outlet pipes are fixedly connected to both ends of the reaction tube, respectively. This design forms a smooth gas flow channel, ensuring that reactant gases such as natural gas can smoothly enter the reaction tube for reaction, and that products such as hydrogen generated by the reaction can be discharged in a timely manner. This avoids the problem of gas accumulation or poor flow in the device, and ensures the continuity and stability of the reaction process.

[0027] Please see Figure 2 and Figure 4 A stirring assembly 18 is provided in the middle of the lower part of the preparation box 1. The stirring assembly 18 includes a stirring column 1801 and blades 1802. The stirring column 1801 is rotatably connected to the preparation box 1. Two blades 1802 are provided and fixedly installed on the outside of the stirring column 1801. A motor 17 is provided in the middle of the upper part of the bottom box 9. The motor 17 is fixedly connected to the preparation box 1. The output end of the motor 17 is fixedly connected to the stirring column 1801.

[0028] The stirring column 1801 and blades 1802 are driven to rotate by the electric motor 17, which realizes the stirring of the preparation box 1. The stirring action can promote the uniform distribution of heat in the reaction system, better maintain the stability of the reaction temperature, prevent abnormal reaction caused by local overheating or overcooling, and further enhance the reliability of the device and the hydrogen production effect.

[0029] Please see Figure 2 A side chamber 12 is fixedly installed on one side of the preparation chamber 1. A flue gas vent 101 is provided on one side of the preparation chamber 1 and is connected to the side chamber 12. A heat exchange tube 14 is provided inside the side chamber 12. A water inlet pipe 15 is fixedly installed on the upper side of one side of the side chamber 12 and is connected to a water supply device. A water outlet pipe 13 is fixedly installed on the lower side of one side of the side chamber 12. The water outlet pipe 13 and the water inlet pipe 15 are respectively fixedly connected to the two ends of the heat exchange tube 14. A flue gas vent 16 is fixedly installed on the upper side of the side chamber 12.

[0030] The waste heat from the high-temperature flue gas generated during the natural gas hydrogen production process is utilized. The high-temperature flue gas enters the side box 2 12 through the flue gas outlet 101 and exchanges heat with the water in the heat exchange tube 14, transferring heat to the water and raising the water temperature, thus achieving effective recovery and utilization of waste heat.

[0031] Please see Figure 3 The side box 12 has a fixed installation of a flow guide plate 19, and there are multiple flow guide plates 19 arranged vertically in a staggered manner.

[0032] The design of the diversion plate 19 increases the contact time between the flue gas and the heat exchange tube 14, making the heat exchange process more complete and more effectively transferring the heat in the flue gas to the water in the heat exchange tube 14, thus improving the stability of waste heat recovery.

[0033] Please see Figure 2 Mounting brackets 2 are symmetrically fixed on both sides below the preparation box 1, and a partition 20 is fixedly installed on one side inside the preparation box 1.

[0034] The mounting bracket 2 facilitates the installation and fixation of the device, and the partition 20 can rationally divide the internal space of the preparation box 1, reduce mutual interference between different areas, and increase the stability of the reaction process.

[0035] Working principle: During use, the burner 7 provides high temperature to the preparation chamber 1. Natural gas and reaction gas enter the reaction tube 4 through the inlet pipe 3. Under the action of the honeycomb nickel-based catalyst filled inside, a conversion reaction occurs, generating products such as hydrogen and being discharged from the outlet pipe 5. During the reaction, the temperature sensor 8 monitors the temperature of the reaction zone in real time. If the temperature is detected to be too high, the cooling pipe 10 delivers cooling gas to the nozzle 11 and sprays it into the reaction zone to achieve rapid cooling and ensure stable reaction. At the same time, the motor 17 drives the blades 1802 of the stirring component 18 to rotate, promoting uniform mixing of the reaction gas and the cooling medium and avoiding local overheating. The high-temperature flue gas generated in the preparation chamber 1 enters the side chamber 2 12 through the exhaust port 101 and contacts the heat exchange tube 14 for heat exchange, realizing waste heat recovery. The cooled flue gas is discharged through the exhaust pipe 16.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A temperature-controlled integrated natural gas hydrogen production device, comprising a preparation chamber (1), characterized in that: A side box (6) is fixedly installed on one side of the preparation box (1). A burner (7) is fixedly installed inside the side box (6). A bottom box (9) is fixedly installed below the preparation box (1). Cold air pipes (10) are symmetrically arranged on both sides of the front end of the bottom box (9). A nozzle (11) is symmetrically fixedly installed on both sides of the lower part of the preparation box (1). One end of the cold air pipe (10) extends into the interior of the bottom box (9) and passes through the bottom of the preparation box (1) and is fixedly connected to the nozzle (11). Temperature sensors (8) are symmetrically fixedly installed on both sides of the upper part of the preparation box (1).

2. The integrated natural gas hydrogen production device with temperature control according to claim 1, characterized in that: A reaction tube (4) is fixedly installed in the middle of the upper part of the preparation box (1). The inside of the reaction tube (4) is filled with a honeycomb nickel-based catalyst. An air inlet pipe (3) is fixedly installed on one side of the upper part of the preparation box (1), and an air outlet pipe (5) is fixedly installed on the other side of the upper part of the preparation box (1). The air inlet pipe (3) and the air outlet pipe (5) are respectively fixedly connected to the two ends of the reaction tube (4).

3. The integrated natural gas-to-hydrogen device with temperature control according to claim 1, characterized in that: A stirring assembly (18) is provided in the middle of the lower part of the preparation box (1). The stirring assembly (18) includes a stirring column (1801) and blades (1802). The stirring column (1801) is rotatably connected to the preparation box (1). Two blades (1802) are provided and fixedly installed on the outside of the stirring column (1801).

4. The integrated natural gas-to-hydrogen device with temperature control according to claim 3, characterized in that: An electric motor (17) is provided in the middle of the upper part of the bottom box (9), and the electric motor (17) is fixedly connected to the preparation box (1). The output end of the electric motor (17) is fixedly connected to the stirring column (1801).

5. The integrated natural gas-to-hydrogen device with temperature control according to claim 1, characterized in that: A side box 2 (12) is fixedly installed on one side of the preparation box (1). A flue gas hole (101) is provided on one side of the preparation box (1), and the flue gas hole (101) is connected to the side box 2 (12). A heat exchange tube (14) is provided inside the side box 2 (12). A water inlet pipe (15) is fixedly installed on the upper side of one side of the side box 2 (12). A water outlet pipe (13) is fixedly installed on the lower side of one side of the side box 2 (12). The water outlet pipe (13) and the water inlet pipe (15) are respectively fixedly connected to the two ends of the heat exchange tube (14). A flue gas pipe (16) is fixedly installed on the upper side of the side box 2 (12).

6. The integrated natural gas-to-hydrogen device with temperature control according to claim 5, characterized in that: The side box 2 (12) is fixedly installed with a diversion plate (19), and there are multiple diversion plates (19), which are arranged vertically in an alternating manner.

7. The integrated natural gas hydrogen production device with temperature control according to claim 1, characterized in that: Mounting brackets (2) are symmetrically fixedly installed on both sides below the preparation box (1), and a partition (20) is fixedly installed on one side inside the preparation box (1).

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