Chemical chain reforming hydrogen production moving bed reactor system

Abstract

The invention discloses a chemical chain reforming hydrogen production moving bed reactor system, and particularly relates to the field of moving bed reactors, the chemical chain reforming hydrogen production moving bed reactor system comprises a fuel reactor, a combustion reactor is arranged on one side of the fuel reactor, moving bed reaction mechanisms are installed in the fuel reactor and the combustion reactor, and each moving bed reaction mechanism comprises a shell; a material screening assembly is installed at the top of the shell, an air guiding assembly is arranged at the bottom of the shell, the material screening assembly and the air guiding assembly are tower-shaped components, screening holes are formed in the material screening assembly, the diameter of the portion, close to the center of the material screening assembly, of the screening hole is smaller than that of the portion, away from the center of the material screening assembly, of the air guiding assembly, and air guiding holes are formed in the air guiding assembly. The diameter of the air guide hole close to the air guide assembly center is smaller than that of the air guide hole away from the air guide assembly center. Through the material screening assembly and the gas guide assembly, oxygen carriers with different sizes can be separated to fall, and different amounts of reaction gas are introduced, so that the reaction gas uniformly penetrates through the oxygen carriers to perform full contact reaction.

Description

Technical Field

[0001] This invention relates to the field of moving bed reactor technology, and more specifically, to a moving bed reactor system for hydrogen production via chemical loop reforming. Background Technology

[0002] The chemical loop reforming hydrogen production moving bed reactor system is centered on "chemical loop reforming hydrogen production-synthetic ammonia". It mainly includes five types of core reactors and one core medium. The core reactors include air separation reactor, combustion reactor, fuel reactor, pressure swing adsorption reactor and ammonia synthesis reactor, and the key medium is oxygen carrier.

[0003] In the combustion reactor, O2 reacts with the "reduced oxygen carrier" to oxidize it into an "oxidized oxygen carrier". In the fuel reactor, the "oxidized oxygen carrier" reacts with the raw material CH4 (methane) to produce products: H2 (hydrogen) and CO (carbon monoxide). The oxidized oxygen carrier is reduced back to the reduced oxygen carrier and then sent back to the combustion reactor to complete the closed-loop cycle of the oxygen carrier.

[0004] Combustion reactors and fuel reactors typically employ a moving bed as their core internal structure. Oxygen carriers are added from above the moving bed, while gas is added from below, allowing the oxygen carriers to react with the gas. However, after repeated cycles, the oxygen carriers gradually become smaller due to physical wear and chemically induced particle breakage. This results in a mixture of a few small oxygen carriers within a larger volumetric oxygen carrier. While the large oxygen carriers (such as large particles or lumps) have relatively stable flowability and high porosity, the inclusion of small particles disrupts the original bed equilibrium due to differences in size and mass. Furthermore, small particles easily fill the gaps between the large oxygen carriers, causing a sharp drop in localized porosity in the bed. This makes it difficult for gases (such as CH4 and O2) to penetrate uniformly, forcing them to flow rapidly through highly porous "channels" (i.e., "channeling"), leading to insufficient gas-solid contact. Summary of the Invention

[0005] The present invention provides a moving bed reactor system for hydrogen production via chemical loop reforming, which aims to solve the problem that in existing moving bed reactor systems for hydrogen production via chemical loop reforming, the oxygen carriers used in multiple cycles gradually become smaller due to physical wear and chemically induced particle breakage, resulting in a mixture of a few small oxygen carriers among a large number of large oxygen carriers, making it difficult for the gas to penetrate the oxygen carriers uniformly and achieve sufficient contact.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a moving bed reactor system for hydrogen production via chemical loop reforming, comprising a fuel reactor, a combustion reactor on one side of the fuel reactor, and a moving bed reaction mechanism installed inside both the fuel reactor and the combustion reactor. The moving bed reaction mechanism includes a shell, a sieving assembly installed at the top of the shell, and a gas guiding assembly installed at the bottom of the shell. Both the sieving assembly and the gas guiding assembly are tower-shaped components. The sieving assembly has sieve holes, and the diameter of the sieve hole near the center of the sieving assembly is smaller than the diameter of the sieve hole away from the center of the sieving assembly. The gas guiding assembly has gas guiding holes, and the diameter of the gas guiding hole near the center of the gas guiding assembly is smaller than the diameter of the gas guiding hole away from the center of the gas guiding assembly. A partition is installed inside the shell and is fixedly disposed between the sieving assembly and the gas guiding assembly. The partition divides the interior of the shell into a reaction chamber one and a reaction chamber two, and the inner diameter of the reaction chamber one is smaller than the inner diameter of the reaction chamber two.

[0007] In a preferred embodiment, the screening assembly includes a screening disc 1 with a screening hole 1, a screening disc 2 at the bottom of the screening disc 1 with a screening hole 2, and a screening disc 3 at the bottom of the screening disc 2 with a screening hole 3.

[0008] In a preferred embodiment, the air guiding assembly includes an air intake plate, on which an air guiding plate 1 is mounted and an air guiding hole 1 is provided. An air guiding plate 2 is provided at the bottom of the air guiding plate 1 and an air guiding hole 2 is provided on the air guiding plate 2.

[0009] In a preferred embodiment, a drive assembly is installed on the top of both the fuel reactor and the combustion reactor. The drive assembly includes a feed pipe, a dust collector seat is detachably installed on the feed pipe, a dust collector pump is installed on the dust collector seat, and a filter plate is provided between the feed pipe and the dust collector seat.

[0010] In a preferred embodiment, the air inlet plate is provided with a discharge port, which is connected to the reaction chamber. The bottom of the outer shell is provided with a collection plate, which is rotatably located inside the corresponding fuel reactor and combustion reactor. The bottom of the fuel reactor and combustion reactor are provided with discharge pipes, and the oxygen carrier on the collection plate is discharged through the discharge pipes.

[0011] In a preferred embodiment, the drive assembly further includes a drive motor, a drive shaft is fixedly connected between the sieve disc and the air intake disc, and the output end of the drive motor is fixedly connected to the top end of the drive shaft.

[0012] In a preferred embodiment, a support rod is provided at the bottom of the collection tray, and a ball bearing is rotatably mounted at one end of the support rod, with the ball bearing making rolling contact with the bottom surface of the collection tray.

[0013] In a preferred embodiment, exhaust holes are provided on both the outer shell and the partition plate, and several sets of exhaust holes are provided on the upper part of the outer shell. A T-shaped opening is provided at the bottom end of the drive shaft, and a collection cylinder is installed on the outside of both the fuel reactor and the combustion reactor.

[0014] In a preferred embodiment, an air inlet pipe is connected to the bottom of the fuel reactor, an exhaust pipe is connected to the collection cylinder of the fuel reactor, a pressure swing adsorption reactor is provided on one side of the fuel reactor, the exhaust pipe is connected to the pressure swing adsorption reactor, an air separation reactor is provided on one side of the combustion reactor, an air inlet pipe is installed at the feed end of the air separation reactor, an exhaust pipe is connected between the discharge end of the air separation reactor and the combustion reactor, and one end of the exhaust pipe is rotatably connected to the bottom end of the drive shaft.

[0015] In a preferred embodiment, an ammonia synthesis reactor is located on the side of the pressure swing adsorption reactor away from the fuel reactor. The discharge end of the pressure swing adsorption reactor is connected to exhaust pipe two and exhaust pipe three. Exhaust pipe three is connected to the feed end of the ammonia synthesis reactor. An exhaust pipe four is connected between the discharge end of the air separation reactor and the ammonia synthesis reactor.

[0016] The beneficial effects of this invention are as follows: This invention uses a screening assembly and a gas guiding assembly to separate oxygen carriers of different sizes for falling, and introduces different amounts of reaction gas according to the different sizes of oxygen carriers, so that the reaction gas can penetrate the oxygen carriers evenly and make full contact with the reaction.

[0017] The dust collector of this invention collects floating dust-level oxygen carriers at the discharge end of the feed pipe, preventing the dust-level oxygen carriers from failing to fall and accumulating inside the sieve holes 1, 2, 3, reaction chamber 1, or reaction chamber 2, thus avoiding blockage and pollution.

[0018] This invention drives the drive shaft to rotate via a drive motor. With the rolling support of the support rod and balls, the outer shell, screening disc one, screening disc two, screening disc three, air inlet disc and material collection disc can rotate synchronously at low speed. Screening disc one rotates to receive the material from the feed pipe, avoiding blockage at a fixed point on the screening disc. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structural composition of the present invention; Figure 2 This is a schematic diagram of the workflow of the present invention; Figure 3 This is a three-dimensional structural diagram of the combustion reactor of the present invention; Figure 4 This is a front view of the moving bed reaction mechanism of the present invention; Figure 5 This is a top view schematic diagram of the moving bed reaction mechanism of the present invention; Figure 6 This is a three-dimensional structural diagram of the top of the moving bed reaction mechanism of the present invention; Figure 7 This is a schematic diagram of the front section of the moving bed reaction mechanism of the present invention; Figure 8 This is a schematic cross-sectional view of the moving bed reaction mechanism of the present invention; Figure 9 This is a schematic diagram of the cross-sectional structure of the feed pipe of the present invention.

[0020] The attached diagrams are labeled as follows: 1. Fuel reactor; 11. Inlet pipe 1; 12. Exhaust pipe 1; 2. Combustion reactor; 21. Drive assembly; 211. Feed pipe; 212. Dust collector; 213. Drive motor; 214. Dust pump; 215. Filter plate; 22. Collection cylinder; 23. Discharge pipe; 3. Pressure swing adsorption reactor; 31. Exhaust pipe 2; 32. Exhaust pipe 3; 4. Air separation reactor; 41. Inlet pipe 2; 42. Exhaust pipe 4; 43. Exhaust pipe 5; 5. Ammonia synthesis reactor; 6. Moving bed reactor. Structure; 61. Outer shell; 611. Exhaust vent; 612. Reaction chamber one; 613. Reaction chamber two; 62. Screening disc one; 621. Screen hole one; 63. Screening disc two; 631. Screen hole two; 64. Screening disc three; 641. Screen hole three; 65. Air inlet disc; 651. Discharge port; 652. Air guide disc one; 653. Air guide disc two; 654. Air guide hole one; 655. Air guide hole two; 66. Collection disc; 67. Support rod; 671. Ball bearing; 68. Drive shaft; 681. T-shaped opening; 69. Partition plate. Detailed Implementation

[0021] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0022] Refer to the instruction manual appendix Figure 1 and Figure 3 The structure shown is a moving bed reactor system for hydrogen production via chemical loop reforming. It includes a fuel reactor 1, a combustion reactor 2 located on one side of the fuel reactor 1, and a moving bed reaction mechanism 6 installed inside both the fuel reactor 1 and the combustion reactor 2. The moving bed reaction mechanism 6 includes a shell 61, a sieve assembly mounted on the top of the shell 61, and a gas guiding assembly located at the bottom of the shell 61. Both the sieve assembly and the gas guiding assembly are tower-shaped components. The sieve assembly has sieve holes, with the diameter of the sieve hole near the center of the sieve assembly being smaller than the diameter of the sieve hole furthest from the center. The gas guiding assembly has gas guiding holes, with the diameter of the gas guiding hole near the center of the gas guiding assembly being smaller than the diameter of the gas guiding hole furthest from the center. (See attached instruction manual.) Figure 7 and Figure 8 As shown in the structure, a partition 69 is installed inside the outer shell 61, and the partition 69 is fixed between the screening assembly and the air guiding assembly. The partition 69 divides the interior of the outer shell 61 into a first reaction chamber 612 and a second reaction chamber 613, and the inner diameter of the first reaction chamber 612 is smaller than the inner diameter of the second reaction chamber 613.

[0023] It should be noted that both the screening component and the air guiding component are tower-shaped components with a pointed top and a wide bottom. Multiple sets of screen holes are arranged along the inclined surface of the screening component. Screen holes at the same height form a ring shape. That is, the screening component has an inner ring of screen holes and an outer ring of screen holes. The inner ring of screen holes is the screen hole near the center of the screening component. It has a small diameter and a long channel length. The outer ring of screen holes is the screen hole far from the center of the screening component. It has a large diameter and a short channel length. The air guiding holes on the air guiding component are designed in the same way. The screen holes near the center of the screening component and the air guiding holes near the center of the air guiding component are vertically aligned. The partition plate 69 is set between two adjacent rings of screen holes.

[0024] In this embodiment, the specific implementation scenario is as follows: In the fuel reactor 1, solid oxidized oxygen carrier is added from the top of the fuel reactor 1, falls onto the screening assembly, and slides down the inclined surface of the screening assembly. The oxidized oxygen carrier is separated and transported according to its diameter through screen holes of different diameters. Small-diameter oxidized oxygen carriers fall from the inner ring of small-diameter screen holes, and large-diameter oxidized oxygen carriers fall from the outer ring of large-diameter screen holes. The shell 61 is divided into reaction chamber one 612 and reaction chamber two 613 by a partition 69. Small-diameter oxidized oxygen carriers fall into reaction chamber one 612, and large-diameter oxidized oxygen carriers fall into reaction chamber two 613. CH4 gas is introduced from the bottom of the fuel reactor 1, and the CH4 gas is diverted into the interior of reaction chamber one 612 and reaction chamber two 613 by a gas guiding assembly. Because the larger the pores... The larger the cross-sectional flow area, the more CH4 gas enters through the large pores than through the small pores within the same time period. That is, the amount of CH4 gas entering the first reaction chamber 612 is less than the amount of CH4 gas entering the second reaction chamber 613. This is to accommodate the large surface area of ​​the oxidized oxygen carrier, which requires more CH4 gas to participate in the reaction. Inside the first reaction chamber 612 and the second reaction chamber 613, the oxidized oxygen carrier falls downwards, while the CH4 gas flows upwards. The two react in a countercurrent contact state. The implementation method in the combustion reactor 2 is the same as that in the fuel reactor 1, except that the CH4 gas is changed to O2. Through the screening assembly and the gas guiding assembly, oxygen carriers of different sizes can be separated and fall separately. Different amounts of reaction gas are introduced according to the different sizes of oxygen carriers, so that the reaction gas can penetrate the oxygen carrier evenly and make full contact with the reaction.

[0025] Refer to the instruction manual appendix Figure 5 and Figure 6The screening assembly includes a screening disc 62, on which a screening hole 621 is provided; a screening disc 63 is provided at the bottom of the screening disc 62, on which a screening hole 631 is provided; and a screening disc 64 is provided at the bottom of the screening disc 63, on which a screening hole 641 is provided.

[0026] It should be noted that the diameter of sieve hole 1 621 is smaller than the diameter of sieve hole 2 631, and the diameter of sieve hole 2 631 is smaller than the diameter of sieve hole 3 641. The diameter of sieve disc 1 62 is smaller than the diameter of sieve disc 2 63, and the diameter of sieve disc 2 63 is smaller than the diameter of sieve disc 3 64.

[0027] Refer to the instruction manual appendix Figure 4 and Figure 7 The air guiding assembly includes an air intake plate 65, an air guide plate 652 is installed on the air intake plate 65, and an air guide hole 654 is opened on the air guide plate 652. An air guide plate 653 is provided at the bottom of the air guide plate 652, and an air guide hole 655 is opened on the air guide plate 653.

[0028] It should be noted that the first sieve hole 621, the first reaction chamber 612 and the first air guide hole 654 are connected, the second sieve hole 631, the second reaction chamber 613 and the second air guide hole 655 are connected, and an interlayer is provided between the outer shell 61 and the outermost partition 69, and the inner diameter of the interlayer is larger than the inner diameter of the second reaction chamber 613. This interlayer is connected to the third sieve hole 641.

[0029] Refer to the instruction manual appendix Figure 3 and Figure 9 Both the fuel reactor 1 and the combustion reactor 2 are equipped with a drive assembly 21. The drive assembly 21 includes a feed pipe 211, a dust collector seat 212 is detachably installed on the feed pipe 211, a dust collector pump 214 is installed on the dust collector seat 212, and a filter plate 215 is provided between the feed pipe 211 and the dust collector seat 212.

[0030] It should be noted that the feed pipe 211 conveys the oxygen carrier pneumatically, and the dust collector 212 is correspondingly set at the discharge end of the feed pipe 211. The dust-level oxygen carrier that is difficult to fall is extracted by the dust pump 214. The filter plate 215 plays a filtering role, which can remove some dust-level oxygen carrier and prevent it from staying inside the reaction chamber 1 612 or reaction chamber 2 613 and causing pollution.

[0031] Refer to the instruction manual appendix Figure 7 and Figure 8 The air inlet plate 65 is provided with a discharge port 651, which is connected to the reaction chamber 613. The bottom of the outer shell 61 is provided with a collection plate 66, which is rotatably located inside the corresponding fuel reactor 1 and combustion reactor 2. The bottom of the fuel reactor 1 and combustion reactor 2 are provided with discharge pipes 23, and the oxygen carrier on the collection plate 66 is discharged through the discharge pipes 23.

[0032] It should be noted that the small-diameter oxygen carrier inside reaction chamber 1 612 falls from the air guide hole 1 654 onto the collection plate 66, and the large-diameter oxygen carrier inside reaction chamber 2 613 falls from the air guide hole 2 655 and the discharge port 651 onto the collection plate 66. The oxygen carrier in the interlayer between the outer shell 61 and the partition plate 69 falls directly onto the collection plate 66. A discharge space is left between the collection plate 66 and the inner wall of the corresponding fuel reactor 1 or combustion reactor 2. The oxygen carrier on the collection plate 66 is discharged from the discharge space and discharged through the discharge pipe 23.

[0033] Refer to the instruction manual appendix Figure 3 and Figure 6 The drive assembly 21 also includes a drive motor 213. A drive shaft 68 is fixedly connected between the sieve disc 62 and the air intake disc 65. The output end of the drive motor 213 is fixedly connected to the top end of the drive shaft 68.

[0034] It should be noted that the drive shaft 68 is driven by the drive motor 213 to rotate at a low speed, so that the outer shell 61, the screening disc 62 and the collection disc 66 rotate synchronously, so as to avoid the accumulation of oxygen carriers that are delivered to the screening disc 62 by the feed pipe 211 at a fixed point.

[0035] Refer to the instruction manual appendix Figure 4 The bottom of the collection tray 66 is provided with a support rod 67, and a ball bearing 671 is rotatably installed at one end of the support rod 67. The ball bearing 671 rolls in contact with the bottom surface of the collection tray 66.

[0036] It should be noted that the end of the support rod 67 away from the ball bearing 671 is fixedly connected to the inner wall of the corresponding fuel reactor 1 or combustion reactor 2, which serves to rotate and support the material collection disc 66.

[0037] Refer to the instruction manual appendix Figure 6 and Figure 7 Both the outer shell 61 and the partition plate 69 are provided with exhaust holes 611, and several sets of exhaust holes 611 are provided on the upper part of the outer shell 61. The bottom end of the drive shaft 68 is provided with a T-shaped opening 681. The outer sides of the fuel reactor 1 and the combustion reactor 2 are both equipped with collection cylinders 22.

[0038] It should be noted that the cross-section of the T-shaped port 681 is T-shaped. The gas first enters from the bottom, then enters from the side between the air inlet plate 65 and the collection plate 66, and finally enters the reaction chamber 612 through the first air guide hole 654, and enters the second reaction chamber 613 through the second air guide hole 655. The gas after the reaction is discharged from the exhaust hole 611, and finally the gas after the reaction is collected through the collection cylinder 22.

[0039] Refer to the instruction manual appendix Figure 1 and Figure 2The bottom of the fuel reactor 1 is connected to an air inlet pipe 11, and the collection cylinder 22 of the fuel reactor 1 is connected to an exhaust pipe 12. A pressure swing adsorption reactor 3 is provided on one side of the fuel reactor 1, and the exhaust pipe 12 is connected to the pressure swing adsorption reactor 3. An air separation reactor 4 is provided on one side of the combustion reactor 2. An air inlet pipe 2 41 is installed at the feed end of the air separation reactor 4, and an exhaust pipe 5 43 is connected between the discharge end of the air separation reactor 4 and the combustion reactor 2. One end of the exhaust pipe 5 43 is rotatably connected to the bottom end of the drive shaft 68.

[0040] It should be noted that CH4 gas is supplied to the fuel reactor 1 through the inlet pipe 11, and the gas after being reacted by the moving bed reaction mechanism 6 of the fuel reactor 1 is transported to the inside of the pressure swing adsorption reactor 3 through the exhaust pipe 12.

[0041] Refer to the instruction manual appendix Figure 1 and Figure 2 A synthetic ammonia reactor 5 is located on the side of the pressure swing adsorption reactor 3 away from the fuel reactor 1. The discharge end of the pressure swing adsorption reactor 3 is connected to exhaust pipe 2 31 and exhaust pipe 32. Exhaust pipe 32 is connected to the feed end of the synthetic ammonia reactor 5. Exhaust pipe 42 is connected between the discharge end of the air separation reactor 4 and the synthetic ammonia reactor 5.

[0042] It should be noted that the pressure swing adsorption reactor 3 supplies H2 to the ammonia synthesis reactor 5 through exhaust pipe 32, and the air separation reactor 4 supplies N2 to the ammonia synthesis reactor 5 through exhaust pipe 42, for the synthesis of ammonia in the ammonia synthesis reactor 5.

[0043] In this embodiment, the specific implementation scenario is as follows: In the air separation stage, air is separated by the air separation reactor 4 to obtain two core gases, N2 and O2. N2 is directly transported to the ammonia synthesis reactor 5 through exhaust pipe 42 as the nitrogen source for ammonia synthesis. O2 is transported to the combustion reactor 2 through exhaust pipe 43 for oxygen carrier oxidation. In the oxygen carrier oxidation stage, the moving bed reaction mechanism 6 inside the combustion reactor 2 causes O2 to react with the reduced oxygen carrier, oxidizing it to an oxidized oxygen carrier. In the hydrogen production and oxygen carrier reduction stage, the moving bed reaction mechanism 6 inside the fuel reactor 1 causes CH4 to react with the oxidized oxygen carrier, generating a mixed gas of H2 and CO, and reducing the oxidized oxygen carrier to a reduced oxygen carrier. Subsequently, the reduced oxygen carrier... The oxygen carrier is returned to the combustion reactor 2 to complete the closed-loop circulation. In the product separation stage, the mixture of H2 and CO is treated by the pressure swing adsorption reactor 3. CO is collected separately as a high-value byproduct, and H2 is transported to the ammonia synthesis reactor 5 through exhaust pipe 32. In the ammonia synthesis stage, N2 from the air separation reactor 4 and H2 from the pressure swing adsorption reactor 3 are mixed in the ammonia synthesis reactor 5 to produce the target product ammonia. The moving bed reaction mechanism 6 is the core mechanism of the fuel reactor 1 and the combustion reactor 2. Taking the moving bed reaction mechanism 6 of the combustion reactor 2 as an example, the reduced oxygen carrier is transported through the feed pipe 211, and the dust collector 212 collects the floating dust-level oxygen carrier at the discharge end of the feed pipe 211. The dust-level oxygen carrier has a small mass and needs to come into contact with the upward-blown gas, causing it to be unable to fall and accumulate inside sieve holes 621, 631, 641, reaction chamber 612, or reaction chamber 613, resulting in blockage and contamination. The dust pump 214 draws air, but the pumping intensity is less than the pneumatic conveying intensity of the feed pipe 211. The dust-level oxygen carrier is collected inside the dust collector seat 212 by the filter plate 215. The dust collector seat 212 can be disassembled for cleaning. The drive motor 213 drives the drive shaft 68 to rotate. With the rolling support of the support rod 67 and the ball bearings 671, the outer shell 61, sieve disc 62, sieve disc 63, sieve disc 64, air inlet disc 65, and collection disc 66 can be simultaneously lowered. The system rotates rapidly. At the first screening plate 62, the rotating screening plate 62 receives the material from the feed pipe 211, preventing blockages caused by fixed-point material receiving on the screening plate 62. Small-diameter reduced oxygen carriers enter the reaction chamber 612 through the first screen hole 621. Large-diameter reduced oxygen carriers roll onto the second screening plate 63 and enter the reaction chamber 613 through the second screen hole 631. The remaining reduced oxygen carriers roll onto the third screening plate 64 and enter the space between the outer shell 61 and the outermost partition plate 69 through the third screen hole 641. O2 is delivered through the T-shaped port 681 to the space between the air inlet plate 65 and the collection plate 66, and enters the reaction chamber 612 through the first air guide hole 654 and the reaction chamber 613 through the second air guide hole 655.The remaining oxygen carrier reacts through the aforementioned interlayer. The number of layers of partition 69 can be increased according to actual needs. The moving bed reaction mechanism 6 of fuel reactor 1 operates in the same manner as described above. Based on different diameters, the reduced oxygen carrier can be divided into at least three stages for separate reactions. The contact ratio between the reduced oxygen carrier and O2 is automatically adjusted to ensure sufficient oxidation of the reduced oxygen carrier, preventing insufficiently oxidized oxygen carrier from entering fuel reactor 1 and affecting hydrogen production efficiency. Ultimately, this provides a stable supply of N2 and H2 to the ammonia synthesis system, improving the overall reliability of the process.

[0044] Working principle: 1. Air is separated by air separation reactor 4 to obtain two core gases, N2 and O2. N2 is directly transported to ammonia synthesis reactor 5 through exhaust pipe 42 as the nitrogen source for ammonia synthesis, while O2 is transported to combustion reactor 2 through exhaust pipe 43 for oxygen carrier oxidation.

[0045] Second, through the moving bed reaction mechanism 6 inside the combustion reactor 2, O2 reacts with the reduced oxygen carrier to oxidize it into an oxidized oxygen carrier.

[0046] Third, through the moving bed reaction mechanism 6 inside the fuel reactor 1, CH4 reacts with the oxidized oxygen carrier to generate a mixed gas of H2 and CO, and the oxidized oxygen carrier is reduced to the reduced oxygen carrier. Subsequently, the reduced oxygen carrier is sent back to the combustion reactor 2 to complete the closed-loop circulation of the oxygen carrier.

[0047] IV. The mixed gas of H2 and CO is treated by pressure swing adsorption reactor 3. CO is collected separately as a high-value byproduct, while H2 is transported to ammonia synthesis reactor 5 through exhaust pipe 32.

[0048] 5. In the ammonia synthesis reactor 5, N2 from the air separation reactor 4 and H2 from the pressure swing adsorption reactor 3 are mixed to undergo an ammonia synthesis reaction, ultimately producing the target product ammonia.

[0049] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A moving bed reactor system for hydrogen production via chemical loop reforming, comprising a fuel reactor (1), a combustion reactor (2) disposed on one side of the fuel reactor (1), and a moving bed reaction mechanism (6) installed inside both the fuel reactor (1) and the combustion reactor (2), characterized in that: The moving bed reaction mechanism (6) includes a housing (61), a screening assembly is installed on the top of the housing (61), and a gas guiding assembly is provided at the bottom of the housing (61). Both the screening assembly and the gas guiding assembly are tower-shaped components. The screening assembly has screen holes, and the diameter of the screen hole near the center of the screening assembly is smaller than the diameter of the screen hole away from the center of the screening assembly. The air guiding component has an air guiding hole, and the diameter of the air guiding hole near the center of the air guiding component is smaller than the diameter of the air guiding hole away from the center of the air guiding component. The shell (61) is equipped with a partition (69) inside, and the partition (69) is fixed between the screening assembly and the air guiding assembly. The partition (69) divides the interior of the shell (61) into reaction chamber one (612) and reaction chamber two (613), and the inner diameter of reaction chamber one (612) is smaller than the inner diameter of reaction chamber two (613).

2. The moving bed reactor system for hydrogen production via chemical loop reforming according to claim 1, characterized in that: The screening assembly includes a screening disc 1 (62) with a screening hole 1 (621) on the screening disc 1 (62), a screening disc 2 (63) at the bottom of the screening disc 1 (62) with a screening hole 2 (631) on the screening disc 2 (63), a screening disc 3 (64) at the bottom of the screening disc 2 (63) with a screening hole 3 (641) on the screening disc 3 (64).

3. The moving bed reactor system for hydrogen production via chemical loop reforming according to claim 2, characterized in that: The air guiding assembly includes an air intake plate (65), on which an air guiding plate one (652) is installed, and an air guiding hole one (654) is opened on the air guiding plate one (652). An air guiding plate two (653) is provided at the bottom of the air guiding plate one (652), and an air guiding hole two (655) is opened on the air guiding plate two (653).

4. The moving bed reactor system for hydrogen production via chemical loop reforming according to claim 3, characterized in that: Both the fuel reactor (1) and the combustion reactor (2) are equipped with a drive assembly (21). The drive assembly (21) includes a feed pipe (211), a dust collector seat (212) is detachably installed on the feed pipe (211), a dust collector pump (214) is installed on the dust collector seat (212), and a filter plate (215) is provided between the feed pipe (211) and the dust collector seat (212).

5. A moving bed reactor system for hydrogen production via chemical loop reforming according to claim 4, characterized in that: The air inlet plate (65) is provided with a discharge port (651), and the discharge port (651) is connected to the reaction chamber (613). The bottom of the outer shell (61) is provided with a collection plate (66), and the collection plate (66) is rotatably located inside the corresponding fuel reactor (1) and combustion reactor (2). The bottom of the fuel reactor (1) and combustion reactor (2) are both provided with discharge pipes (23), and the oxygen carrier on the collection plate (66) is discharged through the discharge pipes (23).

6. The moving bed reactor system for hydrogen production via chemical loop reforming according to claim 5, characterized in that: The drive assembly (21) also includes a drive motor (213), and a drive shaft (68) is fixedly connected between the sieve disc (62) and the air intake disc (65). The output end of the drive motor (213) is fixedly connected to the top end of the drive shaft (68).

7. A moving bed reactor system for hydrogen production via chemical loop reforming according to claim 6, characterized in that: The bottom of the collection tray (66) is provided with a support rod (67), and a ball bearing (671) is rotatably installed at one end of the support rod (67). The ball bearing (671) rolls in contact with the bottom surface of the collection tray (66).

8. A moving bed reactor system for hydrogen production via chemical loop reforming according to claim 7, characterized in that: The outer shell (61) and the partition (69) are provided with exhaust holes (611), and several sets of exhaust holes (611) are provided on the upper part of the outer shell (61). The bottom end of the drive shaft (68) is provided with a T-shaped opening (681). The outer sides of the fuel reactor (1) and the combustion reactor (2) are both equipped with collection cylinders (22).

9. A moving bed reactor system for hydrogen production via chemical loop reforming according to claim 8, characterized in that: The bottom of the fuel reactor (1) is connected to an air inlet pipe (11), the collection cylinder (22) of the fuel reactor (1) is connected to an exhaust pipe (12), a pressure swing adsorption reactor (3) is provided on one side of the fuel reactor (1), the exhaust pipe (12) is connected to the pressure swing adsorption reactor (3), an air separation reactor (4) is provided on one side of the combustion reactor (2), an air inlet pipe (41) is installed at the feed end of the air separation reactor (4), an exhaust pipe (43) is connected between the discharge end of the air separation reactor (4) and the combustion reactor (2), and one end of the exhaust pipe (43) is rotatably connected to the bottom end of the drive shaft (68).

10. A moving bed reactor system for hydrogen production via chemical loop reforming according to claim 9, characterized in that: The pressure swing adsorption reactor (3) is provided with an ammonia synthesis reactor (5) on the side away from the fuel reactor (1). The discharge end of the pressure swing adsorption reactor (3) is connected to exhaust pipe two (31) and exhaust pipe three (32). The exhaust pipe three (32) is connected to the feed end of the ammonia synthesis reactor (5). The discharge end of the air separation reactor (4) is connected to the ammonia synthesis reactor (5) by exhaust pipe four (42).

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