Hydrogen purification device for methanol-to-hydrogen

Abstract

The hydrogen purification device comprises a first base, and a reforming chamber is fixedly mounted at the upper end of the first base; the purification chamber is connected with the reforming chamber through a connecting pipe, and the bottom of the purification chamber is fixedly connected with a second base; the pressure swing adsorber is fixedly mounted on the outer side of the connecting pipe; the purification assembly is arranged on the inner sides of the reforming chamber and the purification chamber; the water spraying assembly is arranged on the inner side of the reforming chamber. According to the hydrogen purification device for methanol hydrogen production, when water is conveyed to the inner side of the reforming chamber through the water inlet, flowing water can drive the water wheel to rotate, and the water wheel rotates to synchronously drive the rotating disc at the bottom to rotate along with the rotating disc through connection of the concentric shaft; and through rotation of the rotating disc, water vapor sprayed by the atomizing nozzle is in better contact with a methanol substance, so that the reaction efficiency of methanol and water vapor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen purification, in particular to a hydrogen purification device for producing hydrogen from methanol. Background Art

[0002] Methanol hydrogen production is a technology that uses methanol as a raw material to produce hydrogen. It is mainly based on the catalytic reforming reaction of methanol and water vapor under specific conditions to extract hydrogen. A hydrogen purification device is required to purify the hydrogen.

[0003] A hydrogen purification device with application number CN202020452076.9 includes a reaction tank, which is divided into a first reaction chamber and a second reaction chamber from top to bottom by a partition. A catalyst is laid in the first reaction chamber, and a molecular sieve is laid in the second reaction chamber. A heating tank extending into the first reaction chamber is inserted on the top of the reaction tank. A plurality of heating tubes are provided in the heating tank. One end of the heating tube extending out of the reaction tank is connected to a cable interface. A through hole is provided at the bottom of the heating tank. The first reaction chamber and the second reaction chamber are connected by a conduit with a valve. An air inlet is provided on the side wall of one end of the heating tank extending out of the reaction tank, and an air outlet is provided along the side wall of the second reaction chamber. Hydrogen and oxygen react under the action of the catalyst to generate water, and the water flows from the conduit into the second reaction chamber in gaseous form along with the hydrogen. The molecular sieve in the second reaction chamber discharges and absorbs the water molecules by filtering and absorbing to obtain pure hydrogen.

[0004] The device relies solely on the reaction of a catalyst to extract hydrogen. This method not only has low purification efficiency, but also incomplete hydrogen extraction, resulting in a waste of resources.

[0005] In response to the above problems, it is urgently necessary to carry out innovative design based on the structure of the original hydrogen purification device for methanol to hydrogen production. Utility Model Content

[0006] The purpose of the present invention is to provide a hydrogen purification device for methanol hydrogen production, so as to solve the problem proposed in the above background technology that the device only relies on the reaction of the catalyst to extract hydrogen. This method not only has low purification efficiency, but also incomplete hydrogen extraction, thereby causing waste of resources.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a hydrogen purification device for producing hydrogen from methanol, comprising a first base, a reforming chamber fixedly mounted on the upper end of the first base; a purification chamber, the purification chamber being connected to the reforming chamber via a connecting pipe, and a second base fixedly connected to the bottom of the purification chamber;

[0008] A pressure swing adsorber, which is fixedly mounted on the outside of the connecting pipe; a purification assembly, which is arranged inside the reforming chamber and the purification chamber; a water spray assembly, which is arranged inside the reforming chamber, wherein hydrogen in methanol can be extracted through the purification assembly; and the catalytic reforming reaction of methanol can be accelerated through the water spray assembly.

[0009] Preferably, the purification component includes an air inlet, a first check valve, a catalyst addition pipe and a water inlet, the air inlet is fixedly installed at the upper end of the reforming chamber, and the first check valve is installed on the outside of the air inlet, the catalyst addition pipe is fixedly installed at the upper end of the reforming chamber, and the water inlet is fixedly installed at the upper end of the reforming chamber.

[0010] Preferably, the purification component also includes a first battery, a heating tube and a first partition. The first battery is fixedly installed at the bottom of the reforming chamber, and a heating tube is fixedly installed inside the reforming chamber, and the heating tube is electrically connected to the first battery. The first partition is fixedly installed inside the reforming chamber.

[0011] Preferably, the purification component also includes a second battery, a cooler and a second partition, the second battery is fixedly installed at the bottom of the purification chamber, and the cooler is fixedly installed inside the purification chamber, and the cooler is electrically connected to the second battery, and the second partition is fixedly installed inside the purification chamber.

[0012] Preferably, the purification component also includes a water outlet, an air outlet and a second check valve. The water outlet is fixedly installed at the side end of the purification chamber, and the air outlet is fixedly installed at the upper end of the purification chamber, and the second check valve is installed outside the air outlet.

[0013] Preferably, the water spray assembly includes a rotating disk and an atomizing nozzle. The rotating disk is rotatably connected to the bottom of the water inlet, and the atomizing nozzle is installed at an equal angle on the bottom of the rotating disk.

[0014] Preferably, the water spray assembly also includes a concentric shaft and a water wheel, the concentric shaft is rotatably connected to the inner side of the water inlet, and a rotating disk is fixedly connected to the bottom of the concentric shaft, and a water wheel is fixedly installed on the outer side of the concentric shaft, and the water wheel is arranged on the inner side of the water inlet.

[0015] Compared with the prior art, the beneficial effect of the present invention is that the hydrogen purification device for producing hydrogen from methanol is provided with:

[0016] 1. Heating structure: This structure uses the first battery to provide electricity to the heating tube, which converts the electrical energy into thermal energy to heat the inside of the reforming chamber. Through heating, the methanol and water vapor inside the reforming chamber undergo a methanol cracking reaction and a carbon monoxide shift reaction under certain temperature and pressure conditions through the action of the catalyst, producing substances such as hydrogen and carbon dioxide;

[0017] 2. Filtration structure: This structure installs a pressure swing adsorber on the outside of the connecting pipe. It uses the difference in the adsorption capacity of the adsorbent inside the pressure swing adsorber for gas molecules under different pressure conditions to achieve gas separation, thereby removing impurities with strong adsorption capacity such as carbon dioxide in hydrogen and oxygen;

[0018] 3. Hydrogen purification structure: In this structure, after hydrogen and oxygen enter the inner side of the purification chamber, the cooler is operated to cool the inner side of the purification chamber. The difference in boiling points of different gases at low temperatures is used for separation. The standard boiling point of hydrogen is -252.77°C, while the boiling point of oxygen is -183°C. At extremely low temperatures, oxygen will liquefy first, while hydrogen will remain in gaseous state, thus achieving the separation of hydrogen and oxygen. The separated liquefied oxygen will be discharged through the water outlet, while the gaseous hydrogen will be discharged through the air outlet, thus achieving complete purification of the hydrogen;

[0019] 4. Uniform water spraying structure. When this structure transports water to the inside of the reforming chamber through the water inlet, the flowing water will drive the water wheel to rotate. The rotation of the water wheel will synchronously drive the rotating disk at the bottom to rotate together through the connection of the concentric shaft. The rotation of the rotating disk allows the water vapor sprayed from the atomizing nozzle to better contact with the methanol substance, thereby improving the reaction efficiency of methanol and water vapor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of the utility model when viewed from above;

[0022] Figure 3 This is a schematic diagram of the front cross-sectional structure of the reforming chamber of the present invention;

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the purification chamber of the utility model;

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the water spray component of the utility model.

[0025] In the figure: 1. First base; 2. Reforming chamber; 3. Second base; 4. Purification chamber; 5. Connecting pipe; 6. Pressure swing adsorber; 7. Purification assembly; 701. Air inlet; 702. First check valve; 703. Catalyst addition pipe; 704. Water inlet; 705. First storage battery; 706. Heating tube; 707. First partition; 708. Second storage battery; 709. Cooler; 710. Second partition; 711. Water outlet; 712. Air outlet; 713. Second check valve; 8. Water spray assembly; 801. Rotating disk; 802. Atomizing nozzle; 803. Concentric shaft; 804. Water wheel. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 5 The utility model provides a technical solution: a hydrogen purification device for methanol hydrogen production, comprising:

[0028] Example 1: Figures 1-4 The technical solution shown in the figure, the utility model provides a technical solution: a hydrogen purification device for hydrogen production from methanol, which discloses: a first base 1, a reforming chamber 2 is fixedly installed on the upper end of the first base 1; a purification chamber 4, the purification chamber 4 is connected to the reforming chamber 2 through a connecting pipe 5, and the bottom of the purification chamber 4 is fixedly connected to the second base 3; a pressure swing adsorber 6, the pressure swing adsorber 6 is fixedly installed on the outside of the connecting pipe 5; a purification assembly 7, the purification assembly 7 is arranged inside the reforming chamber 2 and the purification chamber 4; a water spray assembly 8, the water spray assembly 8 is arranged inside the reforming chamber 2, wherein the purification assembly 7 can be used to extract hydrogen from methanol; the water spray assembly 8 can be used to accelerate the catalytic reforming reaction of methanol;

[0029] The purification component 7 includes an air inlet 701, a first check valve 702, a catalyst addition pipe 703 and a water inlet 704. The air inlet 701 is fixedly mounted on the upper end of the reforming chamber 2, and the first check valve 702 is installed on the outside of the air inlet 701. The catalyst addition pipe 703 is fixedly mounted on the upper end of the reforming chamber 2, and the water inlet 704 is fixedly mounted on the upper end of the reforming chamber 2; the purification component 7 also includes a first battery 705, a heating pipe 706 and a first partition 707. The first battery 705 is fixedly mounted on the bottom of the reforming chamber 2, and a heating pipe 706 is fixedly mounted on the inside of the reforming chamber 2, and the heating pipe 706 is electrically connected to the first battery 705. The reforming chamber 2 A first baffle 707 is fixedly installed inside; the purification assembly 7 also includes a second battery 708, a cooler 709 and a second baffle 710, the second battery 708 is fixedly installed at the bottom of the purification chamber 4, and a cooler 709 is fixedly installed inside the purification chamber 4, and the cooler 709 is electrically connected to the second battery 708, and a second baffle 710 is fixedly installed inside the purification chamber 4; the purification assembly 7 also includes a water outlet 711, an air outlet 712 and a second check valve 713, the water outlet 711 is fixedly installed at the side end of the purification chamber 4, and the air outlet 712 is fixedly installed at the upper end of the purification chamber 4, and a second check valve 713 is installed outside the air outlet 712;

[0030] When the hydrogen in methanol needs to be purified, this structure first discharges methanol, catalyst and water into the inner side of the reforming chamber 2 through the air inlet 701, the catalyst addition pipe 703 and the water inlet 704 in a certain proportion. After the discharge is completed, the first storage battery 705 provides electricity to the heating tube 706, so that the heating tube 706 converts the electrical energy into thermal energy to heat the inner side of the reforming chamber 2. Through heating, the methanol and water vapor inside the reforming chamber 2 can undergo methanol cracking reaction and carbon monoxide conversion reaction under certain temperature and pressure conditions through the action of the catalyst to generate hydrogen, oxygen, carbon dioxide and other substances. The gas-generating substances are transported to the inner side of the purification chamber 4 through the connecting pipe 5. During the transportation process, the pressure swing adsorber 6 outside the connecting pipe 5 uses the pressure swing adsorber The adsorbent inside the appendage 6 realizes gas separation by virtue of the difference in adsorption capacity of gas molecules under different pressure conditions, thereby removing impurity components with strong adsorption capacity such as carbon dioxide in hydrogen and oxygen. After removal, hydrogen and oxygen will enter the inside of the purification chamber 4, and the cooler 709 will be operated to cool the inside of the purification chamber 4. The gases are separated by virtue of the difference in boiling points at low temperatures. The standard boiling point of hydrogen is -252.77°C, while the boiling point of oxygen is -183°C. At extremely low temperatures, oxygen will liquefy first, while hydrogen will remain in a gaseous state, thereby realizing the separation of hydrogen and oxygen. The separated liquefied oxygen will be discharged through the water outlet 711, while the hydrogen in the gas state will be discharged through the gas outlet 712, thereby achieving complete purification of the hydrogen.

[0031] Example 2: Figure 1-Figure 3 、 Figure 5 The technical solution shown in the figure, the utility model provides a technical solution: a hydrogen purification device for methanol hydrogen production, disclosed: a water spray assembly 8 includes a rotating disk 801 and an atomizing nozzle 802, the rotating disk 801 is rotatably connected to the bottom of the water inlet 704, and the atomizing nozzle 802 is installed at an equal angle on the bottom of the rotating disk 801; the water spray assembly 8 also includes a concentric shaft 803 and a water wheel 804, the concentric shaft 803 is rotatably connected to the inner side of the water inlet 704, and the rotating disk 801 is fixedly connected to the bottom of the concentric shaft 803, and the water wheel 804 is fixedly installed on the outer side of the concentric shaft 803, and the water wheel 804 is arranged on the inner side of the water inlet 704;

[0032] When this structure transports water to the inside of the reforming chamber 2 through the water inlet 704, the flowing water will drive the water wheel 804 to rotate. The rotation of the water wheel 804 will synchronously drive the rotating disk 801 at the bottom to rotate together through the connection of the concentric shaft 803. The rotation of the rotating disk 801 allows the water vapor sprayed from the atomizing nozzle 802 to better contact with the methanol substance, thereby improving the reaction efficiency of methanol and water vapor.

[0033] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0034] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydrogen purification device for methanol hydrogen production, characterized in that: Includes: A first base (1), a reforming chamber (2) being fixedly mounted on an upper end of the first base (1); A purification chamber (4), wherein the purification chamber (4) is connected to the reforming chamber (2) via a connecting pipe (5), and a second base (3) is fixedly connected to the bottom of the purification chamber (4); A pressure swing adsorber (6), wherein the pressure swing adsorber (6) is fixedly mounted on the outside of the connecting pipe (5); A purification component (7), wherein the purification component (7) is arranged inside the reforming chamber (2) and the purification chamber (4); A water spray assembly (8), wherein the water spray assembly (8) is arranged inside the reforming chamber (2), wherein: The hydrogen in the methanol can be extracted by the purification component (7); The water spray assembly (8) can accelerate the catalytic reforming reaction of methanol.

2. A hydrogen purification device for producing hydrogen from methanol according to claim 1, characterized in that: The purification component (7) includes an air inlet (701), a first check valve (702), a catalyst addition pipe (703) and a water inlet (704), wherein the air inlet (701) is fixedly mounted on the upper end of the reforming chamber (2), and the first check valve (702) is mounted on the outside of the air inlet (701), the catalyst addition pipe (703) is fixedly mounted on the upper end of the reforming chamber (2), and the water inlet (704) is fixedly mounted on the upper end of the reforming chamber (2).

3. A hydrogen purification device for producing hydrogen from methanol according to claim 2, characterized in that: The purification component (7) further includes a first storage battery (705), a heating tube (706) and a first partition (707), wherein the first storage battery (705) is fixedly mounted on the bottom of the reforming chamber (2), and a heating tube (706) is fixedly mounted on the inside of the reforming chamber (2), and the heating tube (706) is electrically connected to the first storage battery (705), and a first partition (707) is fixedly mounted on the inside of the reforming chamber (2).

4. A hydrogen purification device for producing hydrogen from methanol according to claim 3, characterized in that: The purification component (7) further includes a second storage battery (708), a cooler (709) and a second partition (710), wherein the second storage battery (708) is fixedly mounted on the bottom of the purification chamber (4), and the cooler (709) is fixedly mounted inside the purification chamber (4), and the cooler (709) is electrically connected to the second storage battery (708), and the second partition (710) is fixedly mounted inside the purification chamber (4).

5. A hydrogen purification device for producing hydrogen from methanol according to claim 4, characterized in that: The purification component (7) further comprises a water outlet (711), an air outlet (712) and a second check valve (713); the water outlet (711) is fixedly mounted on the side end of the purification chamber (4); the air outlet (712) is fixedly mounted on the upper end of the purification chamber (4); and the second check valve (713) is mounted outside the air outlet (712).

6. A hydrogen purification device for producing hydrogen from methanol according to claim 1, characterized in that: The water spray assembly (8) comprises a rotating disk (801) and an atomizing nozzle (802). The rotating disk (801) is rotatably connected to the bottom of the water inlet (704), and the atomizing nozzle (802) is installed at an equal angle on the bottom of the rotating disk (801).

7. A hydrogen purification device for producing hydrogen from methanol according to claim 6, characterized in that: The water spray assembly (8) further comprises a concentric shaft (803) and a water wheel (804), wherein the concentric shaft (803) is rotatably connected to the inner side of the water inlet (704), and a rotating disk (801) is fixedly connected to the bottom of the concentric shaft (803), and a water wheel (804) is fixedly mounted on the outer side of the concentric shaft (803), and the water wheel (804) is arranged on the inner side of the water inlet (704).

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