Methanol reforming hydrogen production device based on solar energy and tail gas utilization

Abstract

The utility model discloses a methanol reforming hydrogen production device based on solar energy and tail gas utilization, which relates to the field of new energy utilization and chemical production and comprises a solar heat collector and a methanol reforming reactor. The solar heat collector comprises a groove type paraboloid collecting lens, sunlight irradiates the collecting lens and is reflected to a focus point, and the methanol reforming reactor is located at the light reflection focus point of the groove type paraboloid collecting lens; the methanol reforming reactor comprises an aluminum alloy pipe, a tail gas flow pipe, a methanol reforming pipe, a gas inlet pipe and a gas outlet pipe; the tail gas flow pipe is nested in the aluminum alloy pipe, a plurality of methanol reforming pipes are distributed in an interlayer between the tail gas flow pipe and the aluminum alloy pipe, and the gas inlet pipe and the gas outlet pipe are communicated with all methanol reforming pipes; the aluminum alloy pipe absorbs heat generated by sunlight, and the tail gas flow pipe absorbs waste heat of tail gas circulating in the tail gas flow pipe to jointly supply heat to the methanol reforming pipe; methanol steam enters the methanol reforming pipe from the gas inlet pipe, reacts in the methanol reforming pipe to generate hydrogen-rich reforming gas, and is discharged from the gas outlet pipe.

Description

Technical Field

[0001] This utility model relates to the technical field of new energy utilization and chemical production, specifically to a methanol reforming hydrogen production device based on solar energy and tail gas utilization. Background Technology

[0002] Existing methanol reforming hydrogen production processes typically require continuous heating from an external heat source due to the high endothermic nature of the reaction, and largely rely on fossil fuels (such as natural gas or industrial steam). This not only results in high costs but also generates significant amounts of pollutants and carbon dioxide emissions. In contrast, solar energy is clean and renewable; furthermore, the high-temperature exhaust gas generated in solid oxide fuel cell (SOFC) systems contains considerable waste heat. If solar energy and SOFC exhaust heat can be utilized synergistically, it can significantly reduce dependence on traditional fossil fuels, improve overall energy efficiency, and reduce environmental pollution. Therefore, developing a methanol reforming hydrogen production device that combines solar energy and exhaust heat utilization is of great significance for achieving efficient and environmentally friendly hydrogen production. Utility Model Content

[0003] The purpose of this invention is to provide a methanol reforming hydrogen production device and method that combines solar energy and exhaust gas utilization, providing efficient heating, reducing dependence on traditional energy sources, improving energy efficiency, and reducing pollution.

[0004] The technical solution of this utility model is: to provide a methanol reforming hydrogen production device based on solar energy and tail gas utilization, the device including: a solar collector and a methanol reforming reactor;

[0005] The solar collector includes a parabolic trough concentrator, from which sunlight shines and is reflected to a focal point. The methanol reforming reactor is a tubular structure located at the focal point of the reflected light from the parabolic trough concentrator.

[0006] The methanol reforming reactor includes: an aluminum alloy tube, a tail gas flow pipe, a methanol reforming tube, an inlet pipe, and an outlet pipe;

[0007] An aluminum alloy tube is nested inside an exhaust pipe, and several methanol reforming pipes are distributed in the interlayer between the two. The inlet pipe and the outlet pipe are connected to all the methanol reforming pipes.

[0008] The aluminum alloy tube absorbs the heat generated by sunlight, and the exhaust pipe absorbs the residual heat of the exhaust gas flowing inside it, together providing heat for the methanol reforming tube.

[0009] Methanol and water vapor enter the methanol reforming tube through the inlet pipe, where a methanol reforming reaction occurs to generate hydrogen-rich reformed gas, which is then discharged through the outlet pipe.

[0010] In any of the above technical solutions, the inner wall of the methanol reforming tube is further coated with a catalyst CuO / ZnO / Al2O3.

[0011] In any of the above technical solutions, the methanol reforming reactor further includes a transparent glass tube; an aluminum alloy tube is nested inside the transparent glass tube, the transparent glass tube is permeable to sunlight, and the interlayer between the transparent glass tube and the aluminum alloy tube is evacuated to form an insulation layer.

[0012] In any of the above technical solutions, the methanol reforming reactor further includes a temperature sensor located in the interlayer between the aluminum alloy tube and the tail gas pipe.

[0013] In any of the above technical solutions, a platinum-based catalytic combustion catalyst is further attached to the inner wall of the exhaust pipe. Under normal conditions, SOFC anode exhaust gas flows inside the exhaust pipe. When the temperature sensor detects that the temperature is lower than a preset threshold, the user introduces a mixture of SOFC anode exhaust gas and SOFC cathode exhaust gas into the exhaust pipe. The mixture undergoes a combustion reaction under the catalysis of the platinum-based catalytic combustion catalyst.

[0014] In any of the above technical solutions, the solar collector further includes: a support bracket, an electric push rod, a central rotating platform, and a base;

[0015] A central rotating platform is mounted on a base, and a support bracket is mounted above the central rotating platform. The support bracket includes two brackets connected by a shaft. One bracket is mounted on the central rotating platform, and a slotted parabolic condenser lens is mounted above the other bracket. The two ends of the electric push rod are respectively connected to the two brackets.

[0016] The central rotating platform causes the upper structure to rotate, and the extension and retraction of the electric push rod changes the angle between the two supports, thereby changing the tilt angle of the upper trough parabolic condenser.

[0017] In any of the above technical solutions, the solar collector further includes a light sensor, which is mounted on the same bracket as the parabolic trough concentrator. The light sensor has a four-quadrant array of photoresistors inside, which detects the angle of incident light and feeds it back to the user.

[0018] The beneficial effects of this utility model are:

[0019] The technical solution of this utility model utilizes solar energy from the outside and the high-temperature waste heat of SOFC anode tail gas from the inside to heat the methanol reforming reactor. When the waste heat of the anode tail gas is insufficient, the cathode tail gas is automatically introduced and mixed through a temperature control valve to release heat compensation in the catalytic combustion chamber, ensuring that the reforming reaction is always in the high-efficiency temperature zone, effectively improving hydrogen production efficiency and hydrogen purity.

[0020] In a preferred embodiment of this invention, a vacuum layer is provided between the transparent glass tube and the aluminum alloy outer wall, which significantly reduces heat conduction and convection losses and further improves the overall energy utilization rate of the system. Attached Figure Description

[0021] The advantages of the above and additional aspects of this utility model will become apparent and readily understood in the description of the embodiments in conjunction with the following drawings, wherein:

[0022] Figure 1 This is a schematic diagram of a methanol reforming hydrogen production device based on solar energy and exhaust gas utilization, according to an embodiment of the present invention.

[0023] Figure 2 This is a side view of the solar collector of a methanol reforming hydrogen production device based on solar energy and exhaust gas utilization, according to an embodiment of the present invention.

[0024] Figure 3 This is a schematic cross-sectional view of the methanol reforming reactor in a methanol reforming hydrogen production device based on solar energy and exhaust gas utilization, according to an embodiment of the present invention.

[0025] Among them, 10-solar collector, 20-methanol reforming reactor, 11-parabolic trough concentrator, 12-support bracket, 13-electric push rod, 14-central rotating platform, 15-base, 16-photosensor, 21-transparent glass tube, 22-aluminum alloy tube, 23-exhaust pipe, 24-methanol reforming tube, 25-inlet pipe, 26-outlet pipe. Detailed Implementation

[0026] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments of this utility model and the features thereof can be combined with each other.

[0027] In the following description, many specific details are set forth in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0028] like Figure 1 As shown, this embodiment provides a methanol reforming hydrogen production device based on solar energy and tail gas utilization. The device includes a solar collector 10 and a methanol reforming reactor 20.

[0029] like Figure 2 As shown, the solar collector 10 includes: a parabolic trough concentrator 11, a support bracket 12, an electric push rod 13, a central rotating platform 14, a base 15, and a light sensor 16.

[0030] A central rotating platform 14 is mounted on a base 15. A support bracket 12 is mounted above the central rotating platform 14. The support bracket 12 includes two brackets connected by a shaft. One bracket is mounted on the central rotating platform 14, and a parabolic condenser lens 11 and a photosensor 16 are mounted above the other bracket. The two ends of an electric push rod 13 are respectively connected to the two brackets. The central rotating platform 14 can make the upper structure rotate horizontally. The extension and retraction of the electric push rod 13 can change the included angle of the two brackets, thereby changing the tilt angle of the parabolic condenser lens 11 above.

[0031] The light sensor 16 has a four-quadrant arrangement of photoresistor array, which can detect the direction of incident light. According to the incident light angle detected by the light sensor 16, the user adjusts the central rotating platform 14 and the electric push rod 13 so that the trough parabolic condenser 11 is vertically irradiated by sunlight, thereby improving the utilization rate of solar energy.

[0032] like Figure 3 As shown, the methanol reforming reactor 20 is a tubular structure located at the focal point of light reflection of the parabolic condenser lens 11. The methanol reforming reactor 20 includes: a transparent glass tube 21, an aluminum alloy tube 22, an exhaust pipe 23, a methanol reforming tube 24, an inlet pipe 25, an outlet pipe 26, and a temperature sensor. The transparent glass tube 21, the aluminum alloy tube 22, and the exhaust pipe 23 are nested from the outside to the inside, with the transparent glass tube 21 on the outermost layer. Sunlight gathered by the parabolic condenser lens 11 passes through the transparent glass tube 21, and the heat is absorbed by the aluminum alloy tube 22. The space between the transparent glass tube 21 and the aluminum alloy tube 22 is evacuated to form an insulation layer.

[0033] Several methanol reforming tubes 24 are distributed within the interlayer between the aluminum alloy tube 22 and the tail gas flow pipe 23. Each methanol reforming tube 24 is a thin tube with a catalyst CuO / ZnO / Al2O3 attached to its inner wall. The inlet pipe 25 and the outlet pipe 26 are connected to all the methanol reforming tubes 24. Methanol and water vapor enter the methanol reforming tubes 24 through the inlet pipe 25 and undergo a methanol reforming reaction inside the methanol reforming tubes 24 to generate hydrogen-rich reformed gas, which is discharged from the outlet pipe 26. A temperature sensor is located in the interlayer between the aluminum alloy tube 22 and the tail gas flow pipe 23 to detect the temperature near the methanol reforming tubes 24 and provide real-time feedback to the outside.

[0034] The exhaust pipe 23 is located in the innermost layer. The inner wall of the exhaust pipe 23 is attached with a platinum-based catalytic combustion catalyst. Under normal conditions, SOFC anode exhaust gas flows inside the exhaust pipe 23. When the temperature sensor detects that the temperature is lower than the preset threshold, the user introduces a mixture of SOFC anode exhaust gas and SOFC cathode exhaust gas into the exhaust pipe 23. Under the catalysis of the platinum-based catalytic combustion catalyst on the inner wall of the exhaust pipe 23, the SOFC anode exhaust gas and SOFC cathode exhaust gas undergo a combustion reaction, releasing heat to supplement the heat of the methanol reforming pipe 24.

[0035] The SOFC anode and cathode exhaust gases mentioned above originate from solid oxide fuel cells (SOFCs). SOFCs are batteries that use solid oxide electrolytes to directly convert fuel and oxidant into electrical energy through an electrochemical reaction at high temperatures. Both the cathode and anode produce gases with residual heat. The two gases can be mixed and combusted together under the influence of a combustion aid (platinum-based catalytic combustion catalyst).

[0036] In summary, this utility model proposes a methanol reforming hydrogen production device based on solar energy and tail gas utilization, comprising: a solar collector 10 and a methanol reforming reactor 20.

[0037] The solar collector 10 includes a parabolic trough concentrator 11, which is illuminated by sunlight and reflected to a focal point. The methanol reforming reactor 20 is a tubular structure located at the focal point of the reflected light from the parabolic trough concentrator 11.

[0038] The methanol reforming reactor 20 includes: an aluminum alloy tube 22, a tail gas flow pipe 23, a methanol reforming pipe 24, an inlet pipe 25, and an outlet pipe 26.

[0039] An aluminum alloy tube 22 is nested inside an exhaust pipe 23, and several methanol reforming pipes 24 are distributed in the interlayer between the two. The inlet pipe 25 and the outlet pipe 26 are connected to all the methanol reforming pipes 24.

[0040] The aluminum alloy tube 22 absorbs the heat generated by sunlight, and the exhaust pipe 23 absorbs the residual heat of the exhaust gas flowing inside it, together providing heat for the methanol reforming pipe 24.

[0041] Methanol water vapor enters methanol reforming pipe 24 through inlet pipe 25, where methanol reforming reaction occurs to generate hydrogen-rich reformed gas, which is discharged from outlet pipe 26.

[0042] In this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0043] The shapes of the components in the accompanying drawings are schematic and may differ from their actual shapes. The drawings are only used to illustrate the principle of this utility model and are not intended to limit this utility model.

[0044] Although the present invention has been disclosed in detail with reference to the accompanying drawings, it should be understood that these descriptions are merely exemplary and not intended to limit the application of the present invention. The scope of protection of the present invention is defined by the appended claims and may include various modifications, alterations, and equivalents made to the invention without departing from the scope and spirit of the present invention.

Claims

1. A methanol reforming hydrogen production device based on solar energy and tail gas utilization, characterized in that, The device includes: a solar collector (10) and a methanol reforming reactor (20); The solar collector (10) includes a parabolic trough concentrator (11), sunlight shines on the parabolic trough concentrator (11) and is reflected to the focal point, and the methanol reforming reactor (20) is a tubular structure located at the focal point of the light reflection of the parabolic trough concentrator (11). The methanol reforming reactor (20) includes: an aluminum alloy tube (22), a tail gas flow pipe (23), a methanol reforming pipe (24), an inlet pipe (25), and an outlet pipe (26); An aluminum alloy tube (22) has a tail gas pipe (23) nested inside it. Several methanol reforming tubes (24) are distributed in the interlayer between the two. The inlet pipe (25) and the outlet pipe (26) are connected to all the methanol reforming tubes (24). The aluminum alloy tube (22) absorbs the heat generated by sunlight, and the exhaust pipe (23) absorbs the residual heat of the exhaust gas flowing inside it, together providing heat for the methanol reforming pipe (24). Methanol water vapor enters the methanol reforming pipe (24) through the inlet pipe (25), and undergoes a methanol reforming reaction in the methanol reforming pipe (24) to generate hydrogen-rich reformed gas, which is discharged from the outlet pipe (26).

2. The methanol reforming hydrogen production device based on solar energy and tail gas utilization as described in claim 1, characterized in that, The inner wall of the methanol reforming tube (24) is coated with a catalyst CuO / ZnO / Al2O3.

3. The methanol reforming hydrogen production device based on solar energy and tail gas utilization as described in claim 1, characterized in that, The methanol reforming reactor (20) also includes a transparent glass tube (21); an aluminum alloy tube (22) is nested inside the transparent glass tube (21). The transparent glass tube (21) can be penetrated by sunlight, and the interlayer between the transparent glass tube (21) and the aluminum alloy tube (22) is evacuated to form a heat insulation layer.

4. The methanol reforming hydrogen production device based on solar energy and tail gas utilization as described in claim 1, characterized in that, The methanol reforming reactor (20) also includes a temperature sensor located in the interlayer between the aluminum alloy tube (22) and the tail gas pipe (23).

5. The methanol reforming hydrogen production device based on solar energy and tail gas utilization as described in claim 4, characterized in that, The inner wall of the exhaust pipe (23) is attached with a platinum-based catalytic combustion catalyst. Under normal conditions, SOFC anode exhaust gas flows inside the exhaust pipe (23). When the temperature sensor detects that the temperature is lower than the preset threshold, the user introduces a mixture of SOFC anode exhaust gas and SOFC cathode exhaust gas into the exhaust pipe (23). The mixture undergoes a combustion reaction under the catalysis of the platinum-based catalytic combustion catalyst.

6. The methanol reforming hydrogen production device based on solar energy and tail gas utilization as described in claim 1, characterized in that, The solar collector (10) also includes: a support bracket (12), an electric push rod (13), a central rotating platform (14), and a base (15); A central rotating platform (14) is mounted on a base (15). A support bracket (12) is mounted above the central rotating platform (14). The support bracket (12) includes two brackets connected by a shaft. One bracket is mounted on the central rotating platform (14), and a slotted parabolic condenser lens (11) is mounted above the other bracket. The two ends of an electric push rod (13) are respectively connected to the two brackets. The central rotating platform (14) causes the upper structure to rotate, and the electric push rod (13) extends and retracts to change the angle between the two supports, thereby changing the tilt angle of the upper trough parabolic condenser (11).

7. The methanol reforming hydrogen production device based on solar energy and tail gas utilization as described in claim 6, characterized in that, The solar collector (10) also includes a light sensor (16), which is mounted on the same bracket as the parabolic trough concentrator (11). The light sensor (16) has a four-quadrant arrangement of photoresistor array inside, which detects the incident light angle and feeds it back to the user.

Images