Electric heating type natural gas reforming hydrogen production device
By using an electric heating device in the natural gas reforming hydrogen production equipment, the temperature sensor is used to achieve fine temperature control in the reaction chamber, which solves the problem of difficult temperature control under the combustion heating method, improves thermal efficiency and simplifies the structure , achieve refined production.
Patent Information
- Application Number
- CN202420835324.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-22
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-22
AI Technical Summary
In the existing natural gas reforming and hydrogen production equipment, the combustion heating method leads to difficult control of the reaction temperature, complex structure and low thermal efficiency.
Using an electric heating natural gas reforming hydrogen production device, by setting up electric heating rods, heat dissipation fins and temperature sensors in the reaction chamber, fine control and efficient heating of the reaction chamber temperature are realized, and the combustion chamber is discarded, and real-time monitoring is used for temperature sensors. and adjust the heating power of the electric heating rod.
The refinement control of the reaction temperature is achieved, the structure is compact and the thermal efficiency is high, and the purpose of refined production is achieved, avoiding the complexity and inefficiency of the combustion chamber.
Smart Images
Figure CN222151946U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of natural gas reforming hydrogen production equipment, in particular to an electric heating natural gas reforming hydrogen production device. Background Art
[0002] The reaction of natural gas reforming to produce hydrogen is an endothermic reaction, so heat needs to be continuously provided during the reforming reaction.
[0003] At present, the more common natural gas reforming hydrogen production equipment mostly uses fuel combustion for heating, that is, during the reforming reaction, part of the natural gas is directly burned as fuel to release heat for heating, and the other part of the natural gas enters the reformer for reforming to produce hydrogen. Although this reforming hydrogen production method has a high production efficiency, since the natural gas is directly burned for heating, the temperature of the specific reforming reaction is difficult to control, and refined production cannot be achieved.
[0004] In addition, in order to realize the combustion and heating function of natural gas, a corresponding combustion chamber needs to be set outside the reformer, which leads to a complex overall structure and low thermal efficiency. Utility Model Content
[0005] The utility model aims to solve the problems in the prior art of combustion heating type natural gas reforming hydrogen production equipment that the reaction temperature is difficult to control, the overall structure is complex, and the thermal efficiency is low.
[0006] In order to solve the above problems, the utility model provides an electrically heated natural gas reforming hydrogen production device, comprising an air intake component, a reaction chamber, an air outlet component and a heating and temperature control component, wherein the air intake component is connected to one side of the reaction chamber to achieve air intake, and the air outlet component is connected to the other side of the reaction chamber to achieve air outlet, and the heating and temperature control component comprises an electric heating rod, heat dissipation fins and a temperature sensor, wherein the electric heating rod is arranged inside the reaction chamber, the heat dissipation fins are connected to the outer peripheral wall of the electric heating rod and are used to achieve heat conduction, and the temperature sensor is used to detect the temperature in the reaction chamber and adjust the heating power of the electric heating rod accordingly.
[0007] The above scheme delivers natural gas to the reaction chamber through the air intake assembly, and a catalyst is arranged in the reaction chamber to realize the reforming reaction of natural gas, and the gas obtained after the reaction is discharged from the gas outlet assembly; at the same time, a heating temperature control assembly is arranged in the reaction chamber, and the heating rod of the heating temperature control assembly is used to realize the heating function in the reforming reaction process, and the heat dissipation fins are conducive to evenly transferring the heat of the electric heating rod to various positions in the reaction chamber. At the same time, the temperature sensor can detect the temperature in the reaction chamber and adjust the heating power of the electric heating rod accordingly to ensure that the temperature in the reaction chamber is always kept in an appropriate range. Compared with the prior art, the above scheme has a compact structure and does not require a separate combustion chamber. Moreover, since the electric heating rod and the heat dissipation fins are directly arranged in the reaction chamber for heating, the thermal efficiency is high. At the same time, the temperature in the reaction chamber is monitored in real time by the temperature sensor to realize the feedback adjustment function, so as to achieve the purpose of refined production.
[0008] In an improved embodiment, the reaction chamber includes a cylinder shell, a first porous plate and a second porous plate, the cylinder shell includes a first pipe opening for connecting an air inlet assembly and a second pipe opening for connecting an air outlet assembly, the cylinder shell is filled with a catalyst, the first porous plate and the second porous plate are respectively arranged at the first pipe opening and the second pipe opening so that the catalyst is confined inside the cylinder shell, so that the natural gas of the air inlet assembly passes through the first porous plate and enters the cylinder shell to react with the catalyst, and is discharged from the air outlet assembly through the second porous plate after the reaction is completed.
[0009] In an improved embodiment, the electric heating rod is fixed inside the barrel shell and the electric heating rod and the barrel shell are coaxially arranged, thereby ensuring a more uniform heating effect of the electric heating rod on the barrel shell.
[0010] In an improved embodiment, the heat dissipation fins are multiple and evenly distributed along the circumferential direction on the outer wall of the heating rod, and the long side direction of the heat dissipation fins is parallel to the axis of the heating rod, thereby ensuring that the heat dissipation fins can more evenly transfer the heat of the heating rod to various positions in the reaction chamber.
[0011] In an improved embodiment, the temperature sensor is a thermocouple, and a mounting hole is provided on the side wall of the reaction chamber. One end of the thermocouple is located inside the reaction chamber and the other end extends to the outside of the reaction chamber through the mounting hole, thereby achieving real-time detection of the temperature in the reaction chamber through the thermocouple.
[0012] In an improved embodiment, the air intake assembly includes an air intake chamber and an air intake pipe, the air intake chamber is communicated with the reaction chamber, and the air intake chamber is provided with an air intake interface for communication with the air intake pipe.
[0013] In an improved embodiment, the gas outlet component includes a gas outlet chamber and a gas outlet pipe, the gas outlet chamber is connected to the reaction chamber, and the gas outlet chamber is provided with a gas outlet interface for connecting with the gas outlet pipe and an avoidance hole for the electric heating rod to pass through. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is an overall schematic diagram of an electrically heated natural gas reforming hydrogen production device;
[0015] Figure 2 It is a schematic diagram of an explosion of an electrically heated natural gas reforming hydrogen production device;
[0016] Description of reference numerals:
[0017] 1. Air inlet assembly; 11. Air inlet chamber; 111. Air inlet interface; 12. Air inlet pipe; 2. Reaction chamber; 21. First porous plate; 22. Cylinder shell; 221. Mounting hole; 23. Second porous plate; 231. Through hole; 3. Air outlet assembly; 31. Air outlet chamber; 311. Avoidance hole; 312. Air outlet interface; 32. Air outlet pipe; 4. Heating and temperature control assembly; 41. Electric heating rod; 411. Heat dissipation fin; 42. Temperature sensor. DETAILED DESCRIPTION
[0018] It should be understood by those skilled in the art that the following embodiments are only used to explain the technical principles of the embodiments of the present application and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art may make adjustments to them as needed to adapt to specific application scenarios.
[0019] In the description of the following embodiments, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.
[0020] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0021] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.
[0022] See also Figure 1 and Figure 2 An embodiment of the utility model provides an electrically heated natural gas reforming hydrogen production device, comprising an air intake component 1, a reaction chamber 2, an air outlet component 3 and a heating and temperature control component 4, wherein the air intake component 1 is connected to one side of the reaction chamber 2 to achieve air intake, and the air outlet component 3 is connected to the other side of the reaction chamber 2 to achieve air outlet, and the heating and temperature control component 4 comprises an electric heating rod 41, a heat dissipation fin 411 and a temperature sensor 42, the electric heating rod 41 is arranged inside the reaction chamber 2, the heat dissipation fin 411 is connected to the outer peripheral wall of the electric heating rod 41 and is used to achieve heat conduction, and the temperature sensor 42 is used to detect the temperature in the reaction chamber 2 and adjust the heating power of the electric heating rod 41 accordingly.
[0023] The above scheme transports natural gas to the reaction chamber 2 through the air intake component 1. A catalyst is provided in the reaction chamber 2 to realize the reforming reaction of the natural gas, and the gas obtained after the reaction is discharged from the air outlet component 3. At the same time, a heating temperature control component 4 is provided in the reaction chamber 2, and the heating function in the reforming reaction process is realized by the electric heating rod 41 of the heating temperature control component 4, and the heat dissipation fins 411 are conducive to uniformly transferring the heat of the electric heating rod 41 to various positions in the reaction chamber 2. At the same time, the temperature sensor 42 can detect the temperature in the reaction chamber 2 and adjust the heating power of the electric heating rod 41 accordingly to ensure that the temperature in the reaction chamber 2 is always maintained in an appropriate range.
[0024] Compared with the prior art, the above scheme has a compact structure and does not require a separate combustion chamber. Moreover, since the electric heating rod 41 and the heat dissipation fins 411 are directly arranged in the reaction chamber 2 for heating, the thermal efficiency is high. At the same time, the temperature in the reaction chamber 2 is monitored in real time by the temperature sensor 42 to realize the feedback regulation function and achieve the purpose of refined production.
[0025] In this embodiment, the reaction chamber 2 includes a cylindrical shell 22, a first porous plate 21 and a second porous plate 23; Figure 2As a reference, the axis of the cylinder shell 22 is arranged vertically, the upper end of the cylinder shell 22 is the first pipe opening, and the lower end of the cylinder shell 22 is the second pipe opening; the air inlet assembly 1 is located above the cylinder shell 22 and connected to the first pipe opening, and the air outlet assembly 3 is located below the cylinder shell 22 and connected to the second pipe opening. The cylinder shell 22 is filled with a catalyst, and the "porous" in the first porous plate 21 and the second porous plate 23 means that both have multiple air holes. The first porous plate 21 and the second porous plate 23 are respectively arranged at the first pipe opening and the second pipe opening so that the catalyst is confined inside the cylinder shell 22, so that the natural gas of the air inlet assembly 1 passes through the first porous plate 21 and enters the cylinder shell 22 to react with the catalyst, and then passes through the second porous plate 23 to be discharged from the air outlet assembly 3 after the reaction is completed.
[0026] Regarding the position restriction of the catalyst by the first porous plate 21 and the second porous plate 23, it can mean that the aperture of the air holes of the first porous plate 21 and the second porous plate 23 is smaller than the catalyst so that the catalyst cannot pass through the first porous plate 21 and the second porous plate 23, or a filter screen may be further provided in the cylinder shell 22 to fix the catalyst, while the first porous plate 21 and the second porous plate 23 support the filter screen.
[0027] In an improved embodiment, the electric heating rod 41 is fixed inside the cylinder shell 22 and the electric heating rod 41 is coaxially arranged with the cylinder shell 22, thereby ensuring that the electric heating rod 41 has a more uniform heating effect on the cylinder shell 22. Further, there are multiple heat dissipation fins 411 uniformly distributed along the circumferential direction on the outer peripheral wall of the electric heating rod 41, and the long side direction of the heat dissipation fins 411 is parallel to the axis of the electric heating rod 41, thereby ensuring that the heat dissipation fins 411 can more evenly transfer the heat of the electric heating rod 41 to various positions in the reaction chamber 2.
[0028] In an improved embodiment, the temperature sensor 42 is a thermocouple, and a mounting hole 221 is provided on the side wall of the reaction chamber 2. One end of the thermocouple is located inside the reaction chamber 2 and the other end extends to the outside of the reaction chamber 2 through the mounting hole 221, thereby achieving real-time detection of the temperature inside the reaction chamber 2 through the thermocouple.
[0029] In this embodiment, the air intake assembly 1 includes an air intake chamber 11 and an air intake pipe 12. The lower side of the air intake chamber 11 has an opening so as to be connected to the first pipe opening of the barrel shell 22 of the reaction chamber 2, and the side wall of the air intake chamber 11 is provided with an air intake interface 111 for connecting with the air intake pipe 12.
[0030] In this embodiment, the gas outlet assembly 3 includes a gas outlet chamber 31 and a gas outlet pipe 32. The upper side of the gas outlet chamber 31 has an opening so as to be connected to the second pipe opening of the cylindrical shell 22 of the reaction chamber 2, and the side wall of the gas outlet chamber 31 is provided with a gas outlet interface 312 for connecting to the gas outlet pipe 32. At the same time, the lower side of the gas outlet chamber 31 is provided with an avoidance hole 311 for the electric heating rod 41 to pass through.
[0031] It should be noted that, in the description of the present application, the terms "inside", "outside", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is merely for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application. All directional indications (such as up, down, left, right, front, back, inside, and outside) are only used to explain the relative positional relationship, movement, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.
[0032] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0033] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.
Claims
1. An electrically heated natural gas reforming hydrogen production device, characterized in that: The invention comprises an air intake component (1), a reaction chamber (2), an air outlet component (3) and a heating and temperature control component (4); the air intake component (1) is connected to one side of the reaction chamber (2) to achieve air intake, the air outlet component (3) is connected to the other side of the reaction chamber (2) to achieve air outlet, the heating and temperature control component (4) comprises an electric heating rod (41), a heat dissipation fin (411) and a temperature sensor (42); the electric heating rod (41) is arranged inside the reaction chamber (2), the heat dissipation fin (411) is connected to the outer peripheral wall of the electric heating rod (41) and is used to achieve heat conduction, and the temperature sensor (42) is used to detect the temperature inside the reaction chamber (2) and adjust the heating power of the electric heating rod (41) accordingly.
2. The electrically heated natural gas reforming hydrogen production device according to claim 1, characterized in that: The reaction chamber (2) comprises a cylindrical shell (22), a first porous plate (21) and a second porous plate (23); the cylindrical shell (22) comprises a first pipe opening connected to an air inlet assembly (1) and a second pipe opening connected to an air outlet assembly (3); the cylindrical shell (22) is filled with a catalyst; the first porous plate (21) and the second porous plate (23) are respectively arranged at the first pipe opening and the second pipe opening so that the catalyst is confined inside the cylindrical shell (22).
3. The electrically heated natural gas reforming hydrogen production device according to claim 2, characterized in that: The electric heating rod (41) is fixed inside the cylinder shell (22) and the electric heating rod (41) and the cylinder shell (22) are coaxially arranged.
4. An electrically heated natural gas reforming hydrogen production device according to claim 1 or 3, characterized in that: The heat dissipation fins (411) are multiple and evenly distributed along the circumferential direction on the outer peripheral wall of the electric heating rod (41), and the long side direction of the heat dissipation fins (411) is parallel to the axis of the electric heating rod (41).
5. The electrically heated natural gas reforming hydrogen production device according to claim 1, characterized in that: The temperature sensor (42) is a thermocouple, and a mounting hole (221) is provided on the side wall of the reaction chamber (2). One end of the thermocouple is located inside the reaction chamber (2) and the other end extends to the outside of the reaction chamber (2) through the mounting hole (221).
6. The electrically heated natural gas reforming hydrogen production device according to claim 1, characterized in that: The air intake assembly (1) comprises an air intake chamber (11) and an air intake pipe (12); the air intake chamber (11) is connected to the reaction chamber (2); and the air intake chamber (11) is provided with an air intake interface (111) for communication with the air intake pipe (12).
7. An electrically heated natural gas reforming hydrogen production device according to claim 1 or 6, characterized in that: The gas outlet component (3) comprises a gas outlet chamber (31) and a gas outlet pipe (32); the gas outlet chamber (31) is connected to the reaction chamber (2); the gas outlet chamber (31) is provided with a gas outlet interface (312) for communicating with the gas outlet pipe (32) and an avoidance hole (311) for the electric heating rod (41) to pass through.