Organic liquid storage tank dehydrogenation reactor

Abstract

The present application relates to the technical fields of organic liquid dehydrogenation, and discloses an organic liquid storage tank dehydrogenation reactor, which comprises a reaction tank body, a first pipeline for feeding organic liquid and a second pipeline for feeding catalyst symmetrically arranged on both sides of the reaction tank body, a motor fixedly installed at the top end of the reaction tank body, a rotating shaft connected to the output end of the motor, a stirring frame fixedly connected to the bottom end of the rotating shaft, and a catalyst release structure arranged at the opening of the front end of the second pipeline and capable of being opened and closed. The organic liquid storage tank dehydrogenation reactor is provided with the catalyst release structure at the outlet of the second pipeline. When the motor drives the stirring frame to rotate, the pushing structure at the top end of the rotating stirring frame opens and closes the catalyst release structure, so that the catalyst can enter the inside of the reaction tank body in a timed and quantitative manner. Then, the stirring frame is used for stirring and mixing, so that the catalyst can be more fully mixed with the organic liquid, the dehydrogenation efficiency is higher, and the problems of incomplete contact between the organic liquid and the catalyst and low dehydrogenation efficiency in the prior art are solved.

Description

Technical Field

[0001] This invention relates to the field of organic liquid dehydrogenation technology, specifically to an organic liquid storage tank dehydrogenation reactor. Background Technology

[0002] Hydrogen exists primarily in combined form on Earth and is the most widely distributed substance in the universe, constituting 75% of the universe's mass. It is a secondary energy source. Hydrogen energy has the potential to become a crucial energy source on the world stage in the 21st century, and the technologies for hydrogen production, storage, transportation, and application will become a major focus of attention in the 21st century.

[0003] Currently, there are four main methods for storing and transporting hydrogen: high-pressure gaseous hydrogen storage, cryogenic liquid hydrogen storage, organic liquid storage and transportation, and solid-state hydrogen storage. Among them, organic liquid storage and transportation is called oil storage before hydrogenation and hydrogen oil after hydrogenation. After dehydrogenation, the hydrogen oil returns to oil storage. Hydrogenation and dehydrogenation are highly reversible, so this organic hydrogen storage carrier can be reused. Furthermore, this new type of organic liquid hydrogen storage exists entirely in liquid form throughout its life cycle, and is non-toxic and odorless, allowing for safe storage and transportation like diesel fuel. This solves the problem of difficult hydrogen storage and transportation, enabling transportation via pipelines and tank trucks at normal temperature and pressure. Considering cost, safety, stability, and economy, it is the optimal method for hydrogen storage and transportation.

[0004] Chinese invention patent (application publication number: CN 114653311 A) discloses a dehydrogenation reactor for liquid organic hydrogen storage materials. By incorporating a flow divider and a demister, hydrogen gas converges with the liquid droplets of the hydrogen storage carrier and separates from the droplets on the surface of the flow divider. The demister intercepts any hydrogen storage carrier droplets in the gas that have not yet contacted the flow divider, allowing only the separated hydrogen gas to enter the space inside the flow divider and exit through the outlet pipe. This achieves gas-liquid two-phase separation after the hydrogen production reaction, enabling this liquid organic hydrogen storage material dehydrogenation reactor to produce pure hydrogen without the need for an additional gas-liquid separation device. It is convenient to use, requires little space, and has promising application prospects. As can be seen from the accompanying drawings in the specification, the catalyst layer containing the catalyst is fixed inside the reaction shell. Hydrogen oil continuously enters the reaction shell from the feed inlet, falls down and passes through the catalyst layer. However, because the catalyst layer is fixed, the contact between the hydrogen oil and the catalyst is incomplete, resulting in low dehydrogenation efficiency. It takes a long reaction time to reach the dehydrogenation standard. Therefore, the existing technology needs to be improved to meet actual needs. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides an organic liquid storage tank dehydrogenation reactor, which has the advantages of enabling more thorough mixing of the catalyst and organic liquid, thereby improving dehydrogenation efficiency. It solves the problem of incomplete contact between the organic liquid and the catalyst in existing technologies, resulting in low dehydrogenation efficiency of the organic liquid.

[0007] (II) Technical Solution

[0008] To achieve the aforementioned goal of improving dehydrogenation efficiency, the present invention provides the following technical solution: an organic liquid storage tank dehydrogenation reactor, comprising a reaction tank, and a first pipe for introducing organic liquid and a second pipe for introducing catalyst symmetrically arranged on both sides of the reaction tank. A motor is fixedly installed at the top of the reaction tank, the output end of the motor is connected to a rotating shaft, and a stirring frame is fixedly connected to the bottom end of the rotating shaft. An openable and closable catalyst release structure is provided at the front end opening of the second pipe, and an exhaust valve for discharging hydrogen is fixedly installed at the top of the reaction tank.

[0009] Preferably, the catalyst release structure includes a first column fixedly installed on the top of the stirring rack and an extension block extending from the outer wall of the second pipe toward the direction of rotation. A fixing column is fixedly installed at the bottom of the extension block. One end of a high-temperature torsion spring is fixedly connected to the outer wall of the fixing column. A cap is fixedly connected to the other end of the high-temperature torsion spring. The cap is sleeved on the outer wall of the fixing column, and its bottom end is supported by a limiting block fixedly connected to the bottom end of the fixing column. A second column is fixedly installed at the bottom end of the cap.

[0010] Preferably, the first column rotates around the pivot, the second column rotates around the fixed column and has the same diameter as the first column, and the distance from the outermost edge of the first column away from the pivot to the central axis of the pivot is equal to the distance from the central axis of the second column to the central axis of the pivot.

[0011] Preferably, the end of the cap away from the fixing post is in the shape of a circular plate, and its diameter is larger than the diameter of the end sleeved on the fixing post and equal to the diameter of the second pipe. The end of the cap sleeved on the fixing post is limited by a limiting block and its top plate, so that it fits against the opening at the front end of the second pipe. The top plate is fixedly sleeved on the outer wall of the fixing post.

[0012] Preferably, the catalyst release structure includes an inclined guide rail fixedly installed on the top of the stirring rack, and a limiting ring fixedly installed inside the front opening of the second pipe. A top rod is inserted inside the limiting ring, and a baffle is fixedly installed on the top of the top rod. The diameter of the baffle is larger than the inner diameter of the limiting ring and smaller than the outer diameter of the limiting ring.

[0013] Preferably, the diameter of the top rod is smaller than the inner diameter of the limiting ring, and its bottom end is at the same horizontal plane as the lowest end of the top surface of the inclined guide rail.

[0014] Preferably, the top surface of the inclined guide rail is provided with a semi-circular groove, and the bottom end of the top rod is semi-spherical and fits into the groove on the top surface of the inclined guide rail.

[0015] Preferably, the longitudinal section of the baffle is trapezoidal, with a smaller upper section and a larger lower section.

[0016] Preferably, the exhaust valve is a one-way valve.

[0017] Preferably, the stirring rack is cross-shaped, and a main stirring shaft is fixedly installed at the bottom of each end. Several sets of auxiliary stirring shafts are distributed in a circumferential array on the outer wall of each set of main stirring shafts.

[0018] Compared with the prior art, the present invention provides an organic liquid storage tank dehydrogenation reactor, which has the following beneficial effects:

[0019] 1. A second pipeline for introducing catalyst is set on both sides of the reaction tank. A catalyst release structure is set at the outlet of the second pipeline. When the motor drives the stirring rack to rotate, the catalyst release structure is opened and closed by the pushing structure at the top of the rotating stirring rack, so that the catalyst can enter the reaction tank in a timed and quantitative manner. Then, the stirring rack is used to stir and mix the catalyst, so that the catalyst can be mixed more thoroughly with the organic liquid and the dehydrogenation efficiency is higher. This solves the problem of incomplete contact between organic liquid and catalyst in the existing technology, which results in low dehydrogenation efficiency of organic liquid.

[0020] 2. The motor drives the stirring rack to rotate, which can work in conjunction with the catalyst release structure while mixing the organic liquid and the catalyst. The catalyst release structure is opened by the push structure at the top, eliminating the need for separate control of the opening and closing of the catalyst release structure, making it easy to use. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a cross-sectional schematic diagram of the first embodiment of the structure of the present invention;

[0023] Figure 3 The structure of this invention Figure 2 A magnified view of part A in the diagram;

[0024] Figure 4 This is a top sectional view of the first embodiment of the structure of the present invention;

[0025] Figure 5 This is a three-dimensional schematic diagram of the internal structure of the first embodiment of the present invention;

[0026] Figure 6 The structure of this invention Figure 5 A magnified view of part B in the diagram;

[0027] Figure 7 This is a cross-sectional schematic diagram of the second embodiment of the structure of the present invention;

[0028] Figure 8 The structure of this invention Figure 7 A magnified view of part of C;

[0029] Figure 9 This is a top sectional view of the second embodiment of the structure of the present invention;

[0030] Figure 10 This is a three-dimensional schematic diagram of the internal structure of the second embodiment of the present invention;

[0031] Figure 11 The structure of this invention Figure 10 A magnified view of part of D.

[0032] The components are as follows: 1. Reaction tank; 2. First pipeline; 3. Second pipeline; 4. Motor; 5. Stirring frame; 6. Catalyst release structure; 61. First column; 62. Extension block; 63. Fixed column; 64. High-temperature torsion spring; 65. Cover; 66. Limiting block; 67. Second column; 68. Top plate; 7. Catalyst release structure; 71. Inclined guide rail; 72. Limiting ring; 73. Top rod; 74. Baffle; 8. Exhaust valve; 9. Main stirring shaft; 10. Auxiliary stirring shaft. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1:

[0035] As a first embodiment of the present invention, please refer to Figure 1-6An organic liquid storage tank dehydrogenation reactor includes a reaction tank 1, and a first pipe 2 for introducing organic liquid and a second pipe 3 for introducing catalyst, symmetrically arranged on both sides of the reaction tank 1. A motor 4 is fixedly installed at the top of the reaction tank 1, and a rotating shaft is connected to the output end of the motor 4. A stirring frame 5 is fixedly connected to the bottom end of the rotating shaft. A catalyst release structure 6 that can be opened and closed is provided at the front end of the second pipe 3. An exhaust valve 8 for discharging hydrogen is fixedly installed at the top of the reaction tank 1. By setting the second pipe 3 for introducing catalyst on both sides of the reaction tank 1 and by setting the catalyst release structure 6 at the outlet of the second pipe 3, when the motor 4 drives the stirring frame 5 to rotate, the catalyst release structure 6 is opened and closed by the pushing structure at the top of the rotating stirring frame 5. This allows the catalyst to enter the interior of the reaction tank 1 in a timed and quantitative manner, and then be stirred and mixed by the stirring frame 5, so that the catalyst can be mixed more thoroughly with the organic liquid and the dehydrogenation efficiency is higher.

[0036] Please see Figure 2 The cover 65 is installed below the extension block 62 via the fixing post 63 and connected to the fixing post 63 via the high-temperature torsion spring 64. This allows the cover 65 to be pushed and reset via the high-temperature torsion spring 64, thereby opening and closing the second pipe 3. This facilitates the introduction of catalyst into the reaction tank 1. The second column 67 at the bottom of the cover 65 is used to contact the first column 61, so that the first column 61 pushes the second column 67 to drive the cover 65 to rotate around the fixing post 63 to open the second pipe 3.

[0037] Please see Figure 2 , Figure 3 and Figure 5 The first column 61 and the second column are set to have different rotation radii. The distance from the outermost edge of the first column 61 away from the rotating shaft to the central axis of the rotating shaft is set to be equal to the distance from the central axis of the second column 67 to the central axis of the rotating shaft. When the first column 61 at the top of the stirring rack 5 is rotated by the motor 4, it can contact the second column 67 and drive the second column 67 to rotate around the fixed column 63. Since the first column 61 and the second column 67 are in partial contact and both are cylinders with the same diameter, the first column 61 drives the second column 67 to rotate a certain distance, opening the cover 65. Then the two separate, and the cover 65 automatically resets under the action of the high-temperature torsion spring 64, and this cycle continues.

[0038] Please see Figure 3 and Figure 6 The diameter of the end of the cover 65 away from the fixed post 63 is equal to the diameter of the second pipe 3, which can close the second pipe 3 when the cover 65 is closed. The limiting block 66 and the top plate 68 can limit the end of the cover 65 so that it always fits the opening of the second pipe 3 after it is reset.

[0039] In the first embodiment, organic liquid is introduced into the reaction vessel 1 through the first pipe 2. The motor 4 is started, and the shaft rotates, causing the stirring frame 5 connected to the bottom of the shaft to rotate. This causes the first column 61 at the top of the stirring frame 5 to rotate. When the first column 61 rotates and contacts the second column 67, it causes the second column 67 to rotate around the fixed column 63. At this time, the second column 67 causes the top cap 65 to rotate around the fixed column 63, thereby opening the second pipe 3 and releasing the internal catalyst. The high-temperature torsion spring 64 connecting the cap 65 and the fixed column 63 then rotates. When the first column 61 drives the second column 67 to rotate a certain distance, the two separate, and the cover 65 automatically resets under the action of the high-temperature torsion spring 64, closing the second pipe 3. This cycle continues. The waste formed after the catalyst reaction is filtered and collected by a filter screen (not shown in the diagram) set at the bottom of the reaction tank 1, separating and storing the oil. The multiple sets of first columns 61 on the stirring rack 5 can open the cover 65 at the outlet of the symmetrically arranged second pipe 3 at intervals, so as to achieve uniform introduction of catalyst. At the same time, the rotating stirring rack 5 can also quickly mix the catalyst with the organic liquid, accelerating the dehydrogenation efficiency.

[0040] Example 2:

[0041] As a second embodiment of the present invention, please refer to Figure 1 as well as Figure 7-11 An organic liquid storage tank dehydrogenation reactor includes a reaction tank 1, and a first pipe 2 for introducing organic liquid and a second pipe 3 for introducing catalyst, symmetrically arranged on both sides of the reaction tank 1. A motor 4 is fixedly installed at the top of the reaction tank 1, and a rotating shaft is connected to the output end of the motor 4. A stirring frame 5 is fixedly connected to the bottom end of the rotating shaft. A catalyst release structure 7 that can be opened and closed is provided at the front end of the second pipe 3. An exhaust valve 8 for discharging hydrogen is fixedly installed at the top of the reaction tank 1. By setting the second pipe 3 for introducing catalyst on both sides of the reaction tank 1 and by setting the catalyst release structure 7 at the outlet of the second pipe 3, when the motor 4 drives the stirring frame 5 to rotate, the catalyst release structure 7 is opened and closed by the pushing structure at the top of the rotating stirring frame 5. This allows the catalyst to enter the interior of the reaction tank 1 in a timed and quantitative manner, and then be stirred and mixed by the stirring frame 5, so that the catalyst can be mixed more thoroughly with the organic liquid and the dehydrogenation efficiency is higher.

[0042] Please see Figure 7A limiting ring 72 is fixedly installed inside the opening at the front end of the second pipe 3. A movable push rod 73 passes through the limiting ring 72. A baffle 74 with a diameter larger than the inner diameter of the limiting ring 72 and smaller than the outer diameter of the limiting ring 72 is fixedly installed at the top of the push rod 73. When the second pipe 3 is opened, the motor 4 drives the inclined guide rail 71 at the top of the stirring rack 5 to rotate. When the inclined guide rail 71 contacts the bottom end of the push rod 73, it pushes the push rod 73 upward through its inclined surface, causing the baffle 74 to move upward, thereby opening the second pipe 3 to introduce the catalyst into the reaction tank 1 for catalytic reaction. When the bottom end of the push rod 73 slides past the top end of the inclined guide rail 71, the push rod 73 loses contact with the inclined guide rail 71. Under the push of the catalyst inside the second pipe 3, the baffle 74 is pushed back to its original position, closing the second pipe 3, and this cycle continues.

[0043] Please see Figure 7-8 The diameter of the push rod 73 is smaller than the inner diameter of the limiting ring 72, so that after the push rod 73 moves upward, the catalyst inside the second pipe 3 can fall through the gap between the push rod 73 and the limiting ring 72. The bottom end of the push rod 73 is flush with the lowest end of the top surface of the inclined guide rail 71, so that the push rod 73 can rise with the inclined surface of the inclined guide rail 71.

[0044] Please see Figure 9-11 The semi-circular groove on the top surface of the inclined guide rail 71, in conjunction with the hemispherical push rod 73 at the bottom, allows the inclined guide rail 71 to limit the push rod 73 during the push process.

[0045] Please see Figure 8 The baffle 74 is designed as a cone shape with a smaller top and a larger bottom, which allows the catalyst to fall more smoothly when it is pushed open by the push rod 73, and also serves to guide the catalyst.

[0046] In the second embodiment, organic liquid is introduced into the reaction vessel 1 through the first pipe 2. The motor 4 is started, and the shaft rotates, driving the stirring rack 5 connected to the bottom of the shaft to rotate. This causes the inclined guide rail 71 at the top of the stirring rack 5 to rotate. When the lowest point of the inclined guide rail 71 contacts the lowest point of the push rod 73, the inclined guide rail 71 rotates around the shaft, simultaneously causing the push rod 73 to slide inside the semi-circular groove on its top surface. Because it is inclined, the push rod 73 can be pushed upward, causing the baffle 74 to move upward, thereby opening the second pipe 3. When the push rod 73 slides past the highest point of the inclined guide rail 71... When the catalyst is in motion, the push rod 73 loses contact with the inclined guide rail 71 and, under the action of the catalyst's gravity, pushes the baffle 74 back to its original position, closing the opening of the limiting ring 72. The catalyst stops flowing in, and this cycle continues. The waste formed after the catalyst reaction is filtered and collected by a filter screen (not shown) installed at the bottom of the reaction tank 1, separating and storing the oil. The multiple sets of inclined guide rails 71 on the stirring rack 5 can open the baffle 74 at the outlet of the symmetrically arranged second pipe 3 at intervals, so as to achieve uniform catalyst flow. At the same time, the rotating stirring rack 5 can also quickly mix the catalyst with the organic liquid, accelerating the dehydrogenation efficiency.

[0047] Please see Figure 1 , Figure 2 and Figure 7 The exhaust valve 8 is set as a one-way valve. As more and more hydrogen is catalyzed in the reaction tank 1, the internal pressure increases. The hydrogen will be discharged and collected from the exhaust valve 8 at the top of the reaction tank 1. The one-way valve can prevent external air from entering the interior of the reaction tank 1.

[0048] Please see Figure 4-5 and Figure 9-11 Multiple sets of main stirring shafts 9 are set at the bottom of the cross-shaped stirring frame 5, and multiple sets of auxiliary stirring shafts 10 are set on the outer wall of the main stirring shafts 9. This allows the organic liquid and the catalyst to be stirred at the same time as the catalyst is released, so that they are fully mixed.

[0049] In this invention, the organic liquid is a mixture of oil and hydrogen. The oil is a polycyclic aromatic hydrocarbon. After being reacted with a dehydrogenation catalyst, the dehydrogenation is heated by electrically heated heat transfer oil, and finally hydrogen that meets the purity requirements is produced. The oil is a polycyclic aromatic hydrocarbon. The reaction temperature is about 200°C and the reaction pressure is 0.2 MPa.

[0050] The hydrogenation and dehydrogenation equations are shown below:

[0051]

[0052] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An organic liquid storage tank dehydrogenation reactor, comprising a reaction tank (1), and a first pipe (2) for introducing organic liquid and a second pipe (3) for introducing catalyst, symmetrically arranged on both sides of the reaction tank (1), characterized in that: A motor (4) is fixedly installed at the top of the reaction vessel (1). The output end of the motor (4) is connected to a rotating shaft. A stirring rack (5) is fixedly connected to the bottom end of the rotating shaft. A closable catalyst release structure (6) is provided at the front end opening of the second pipe (3). An exhaust valve (8) for discharging hydrogen is fixedly installed at the top of the reaction vessel (1). The catalyst release structure (6) includes a first column (61) fixedly installed at the top of the stirring rack (5) and an extension block (62) extending from the outer wall of the second pipe (3) toward the rotating shaft. A fixing column (63) is fixedly installed at the bottom end of the extension block (62). One end of a high-temperature torsion spring (64) is fixedly connected to the outer wall of the fixing column (63). A cover (65) is fixedly connected to the other end of the high-temperature torsion spring (64). The cover (65) is sleeved on the outer wall of the fixing column (63), and its bottom end is connected to the bottom of the fixing column (63). The cap (65) is fixedly connected to the limiting block (66) for support. The bottom end of the cap (65) is fixedly installed with a second column (67). The first column (61) rotates around the pivot, and the second column (67) rotates around the fixed column (63) and has the same diameter as the first column (61). The distance from the outermost edge of the first column (61) away from the pivot to the central axis of the pivot is equal to the distance from the central axis of the second column (67) to the central axis of the pivot. The end of the cap (65) away from the fixed column (63) is in the shape of a circular plate and its diameter is larger than the diameter of the end sleeved on the fixed column (63) and equal to the diameter of the second pipe (3). The end of the cap (65) sleeved on the fixed column (63) is limited by the limiting block (66) and its top plate (68) so that it fits against the front opening of the second pipe (3). The top plate (68) is fixedly sleeved on the outer wall of the fixed column (63).

2. An organic liquid storage tank dehydrogenation reactor, comprising a reaction tank (1), and a first pipe (2) for introducing organic liquid and a second pipe (3) for introducing catalyst, symmetrically arranged on both sides of the reaction tank (1), characterized in that: A motor (4) is fixedly installed at the top of the reaction vessel (1). The output end of the motor (4) is connected to a rotating shaft. A stirring rack (5) is fixedly connected to the bottom end of the rotating shaft. An openable catalyst release structure (7) is provided at the front opening of the second pipe (3). An exhaust valve (8) for discharging hydrogen is fixedly installed at the top of the reaction vessel (1). The catalyst release structure (7) includes an inclined guide rail (71) fixedly installed at the top of the stirring rack (5) and a limiting ring (72) fixedly installed inside the front opening of the second pipe (3). The limiting ring (72) contains... A top rod (73) is inserted, and a baffle (74) is fixedly installed at the top of the top rod (73). The diameter of the baffle (74) is larger than the inner diameter of the limiting ring (72) and smaller than the outer diameter of the limiting ring (72). The diameter of the top rod (73) is smaller than the inner diameter of the limiting ring (72), and its bottom end is at the same level as the lowest end of the top surface of the inclined guide rail (71). The top surface of the inclined guide rail (71) is provided with a semi-circular groove. The bottom end of the top rod (73) is semi-spherical and fits with the groove on the top surface of the inclined guide rail (71). The longitudinal section of the baffle (74) is a trapezoid with a smaller top and a larger bottom.

3. The dehydrogenation reactor for an organic liquid storage tank according to claim 1 or 2, characterized in that: The exhaust valve (8) is a one-way valve.

4. The dehydrogenation reactor for an organic liquid storage tank according to claim 3, characterized in that: The stirring rack (5) is cross-shaped, and a main stirring shaft (9) is fixedly installed at the bottom of each end. Several sets of auxiliary stirring shafts (10) are distributed in a circular array on the outer wall of each set of main stirring shafts (9).

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