Channel type reactor based on structured catalyst

Abstract

The utility model relates to the technical field of catalyst reactors, and particularly discloses a channel type reactor based on a structured catalyst, which comprises a sealing shell and a plurality of parallel inner sealing plates, the inner sealing plates are staggered to form a catalyst bed layer cavity and a waste heat tail gas cavity, and the structured catalyst based on metal foam is filled in the catalyst bed layer cavity. The reactor further comprises a tail gas dispersing pipe and a collecting pipe which are symmetrically arranged on the two sides of the cavity, an upper conveying trough plate is arranged at the upper end of the sealing shell, a tail gas inlet end socket, a tail gas outlet end socket and a raw material gas inlet end socket are arranged at the upper end of the trough plate, and a lower conveying trough plate is arranged at the lower end of the sealing shell. A product gas outlet seal head is arranged at the lower end of the trough plate. The scheme is compact in layout, high in space utilization rate, high in waste heat utilization efficiency, high in mass transfer and heat transfer rate in the reactor, uniform in temperature field and flow field distribution, large in unit reactor volume productivity and convenient in later replacement and maintenance of the catalyst.

Description

Technical Field

[0001] The utility model relates to the technical field of catalyst reactors, and specifically provides a channel reactor based on a structured catalyst. Background Art

[0002] With the continuous development of industrialization, catalytic reactions are increasingly used in petrochemicals, environmental protection, energy utilization and other fields. As the key equipment for catalytic reactions, catalytic reactors undertake the core task of material conversion. How to improve the efficiency of catalytic reactions, reduce energy consumption and reduce the space occupied by reactors has always been the focus of research in the field of catalytic reactor design.

[0003] Among the existing reactor designs, the channel reactor, as a new design scheme, has attracted much attention due to its advantages in heat exchange, catalyst bed design and space utilization. The design of the channel reactor can optimize the catalyst bed structure into a thin layer, making the contact between the reactants and the catalyst more uniform. At the same time, the channel structure provides a more efficient thermal management method. This technology can not only significantly improve the reaction efficiency, but also reduce energy consumption through waste heat recovery and reduce dependence on external energy.

[0004] Take the design of the methanol reforming hydrogen production reactor, which is currently more common, as an example: methanol reforming hydrogen production (MSR) technology is an efficient and convenient way to produce hydrogen. The design of the methanol reforming reactor largely determines the reaction efficiency, energy consumption and reactor space occupancy, and the optimized design of the catalytic reactor is the key to improving the methanol reforming hydrogen production process. In the prior art, the following patent documents involve methanol reforming hydrogen production reactors:

[0005] 1. The patent document with publication number "CN111153386A" and name "A methanol reforming hydrogen production reactor with honeycomb structure silicon carbide ceramics" uses silicon carbide honeycomb ceramic materials as the reactor hydrogen production reaction carrier, which improves the catalyst loading capacity and reduces the pressure loss. However, the scheme uses methanol catalytic combustion as the heat source for the methanol steam reforming reaction. The combustion heat supply causes large temperature fluctuations and uneven temperature distribution in the reforming chamber, which leads to low catalytic efficiency of the hydrogen production catalyst.

[0006] 2. The patent document with publication number "CN115504433A" and name "A combustion-coupled electric heating device for an integrated methanol reforming hydrogen production reactor" solves the problem of large temperature fluctuations and uneven temperature distribution in the reforming chamber caused by combustion heating, resulting in low catalytic efficiency and low hydrogen production efficiency of the methanol reforming hydrogen production catalyst. However, the solution clearly requires additional electric heating auxiliary devices, and has problems such as complex control and high cost. As a small mobile hydrogen production device, it is difficult to adapt to complex and changeable working conditions.

[0007] From the above, we can see that most of the existing reactor designs focus on the configuration of catalysts and the improvement of reaction efficiency, while innovations in thermal management and energy efficiency optimization are relatively limited. Traditional reactors generally rely on external heating sources or internal heat sources to maintain the temperature required for the reaction, resulting in waste of thermal energy and increased energy consumption, making it difficult to achieve an optimal balance between energy saving and high efficiency.

[0008] Therefore, in order to address the problems of insufficient mass and heat transfer capacity of existing reactors, uneven temperature and flow field distribution, large pressure loss, large reactor volume, high space occupancy, and inconvenient catalyst replacement and maintenance, it is necessary to design a new type of channel reactor. Utility Model Content

[0009] In order to solve the above-mentioned problems, the utility model provides a channel reactor based on a structured catalyst, which can make full use of high-temperature exhaust gas to heat the catalyst bed and improve energy utilization efficiency. It can optimize the gas flow distribution in the reactor, enhance the mass transfer and heat transfer capabilities, increase the overall reaction rate, reduce the reaction pressure loss, and reduce the overall size and space occupancy of the reactor through the combination of a structured catalyst based on metal foam and a channel structure reactor design.

[0010] The utility model provides a channel reactor based on a structured catalyst, comprising a sealed shell and a plurality of inner sealing plates arranged in parallel in the sealed shell, wherein the sealed shell comprises a sub-shell matched and parallel to the inner sealing plates; reaction chambers are formed between adjacent inner sealing plates and between the sub-shells and the inner sealing plates, and the adjacent reaction chambers are respectively a catalyst bed chamber and a waste heat tail gas chamber, the catalyst bed chamber and the waste heat tail gas chamber are arranged alternately in sequence, and the waste heat tail gas chamber is between the sub-shell and the inner sealing plate; The catalyst bed cavity is filled with a structured catalyst based on metal foam; the waste heat tail gas cavity includes a tail gas dispersion pipe and a tail gas collecting pipe symmetrically arranged on both sides of the cavity, and a metal foam body is filled between the tail gas dispersion pipe and the tail gas collecting pipe, and multiple tail gas collecting pipes are connected by a connecting pipe 2, and multiple internal sealing plates are connected by a connecting pipe 1 and a connecting pipe 2; an upper conveying trough plate is provided on the upper end of the sealed shell, and a tail gas inlet head connected to the tail gas dispersion pipe and a tail gas outlet head connected to the tail gas collecting pipe are provided on the upper conveying trough plate, and a raw gas inlet head located on the upper conveying trough head is included between the tail gas inlet head and the tail gas outlet head, and the raw gas inlet head is connected to the catalyst bed cavity; a lower conveying trough plate is provided at the lower end of the sealed shell, and a product gas outlet head connected to the catalyst bed cavity is provided at the lower end of the lower conveying trough plate.

[0011] Furthermore, the channel-type reactor includes a raw gas path, a waste heat exhaust gas inlet path and a waste heat exhaust gas outlet path; the raw gas path is sequentially formed by a raw gas inlet head, an upper transfer trough plate, a catalyst bed cavity, a lower transfer trough plate, and a product gas outlet head; the waste heat exhaust gas inlet path is sequentially formed by a tail gas inlet head, an upper transfer trough plate, a connecting pipe one, a tail gas dispersion pipe, and a waste heat exhaust gas cavity; the waste heat exhaust gas outlet path is sequentially formed by a waste heat exhaust gas cavity, a tail gas collecting pipe, a connecting pipe two, an upper transfer trough plate, and a tail gas outlet head.

[0012] Furthermore, two partition plates are provided in the upper conveying trough plate, and the upper conveying trough plate includes conveying zone one, conveying zone two and conveying zone three which are divided by two partition plates; conveying zone one is located in the middle area of ​​the upper conveying trough plate, and conveying zone two and conveying zone three are respectively located on both sides of conveying zone one; the upper and lower sides of conveying zone one are respectively connected with the raw gas inlet head and the catalyst bed cavity, the upper and lower sides of conveying zone two are respectively connected with the exhaust gas inlet head and the exhaust gas dispersion pipe, and the upper and lower sides of conveying zone three are respectively connected with the exhaust gas outlet head and the exhaust gas collection pipe.

[0013] Furthermore, an upper conveying through slot connected to the catalyst bed cavity is provided in the conveying zone 1, and each upper conveying through slot is matched and connected to a catalyst bed cavity; the catalyst bed cavity is a rectangular cavity structure, and the upper conveying through slot is a rectangular slot structure.

[0014] Furthermore, a dispersion through hole connected to the exhaust gas dispersion pipe is opened in the transmission zone 2, and each dispersion through hole is matched and connected to an exhaust gas dispersion pipe; a collection through hole connected to the exhaust gas collection pipe is opened in the transmission zone 3, and each collection through hole is matched and connected to an exhaust gas collection pipe.

[0015] Furthermore, the raw gas inlet header is connected to a raw gas inlet pipe, and the raw gas inlet pipe is connected to the upper conveying groove; the exhaust gas inlet header is connected to an exhaust gas inlet pipe, and the exhaust gas inlet pipe is connected to the dispersion through hole; the exhaust gas outlet header is connected to an exhaust gas outlet pipe, and the exhaust gas outlet pipe is connected to the collecting through hole.

[0016] Furthermore, a lower conveying slot connected to the catalyst bed cavity is provided on the lower conveying slot plate, each lower conveying slot is matched and connected to a catalyst bed cavity, and the lower conveying slot is a rectangular slot structure; a product gas outlet connected to the lower conveying slot is provided on the product gas outlet head.

[0017] Furthermore, a plurality of exhaust gas delivery holes are provided on the exhaust gas dispersion pipe and the exhaust gas collection pipe, and the exhaust gas delivery holes on the exhaust gas dispersion pipe and the exhaust gas collection pipe are arranged toward the interior of the waste heat exhaust cavity.

[0018] Furthermore, the exhaust gas dispersion pipe is arranged in parallel with the exhaust gas collecting pipe, and the connecting pipe one is arranged in parallel with the connecting pipe two; the connecting pipe one and the connecting pipe two are perpendicular to the exhaust gas dispersion pipe, and the connecting pipe one and the connecting pipe two are perpendicular to the exhaust gas collecting pipe; a connecting hole one connected to the exhaust gas dispersion pipe is provided on the connecting pipe one, and a connecting hole two connected to the exhaust gas collecting pipe is provided on the connecting pipe two, and the connecting pipe two is provided on the connecting pipe.

[0019] Furthermore, the catalyst bed cavity and the waste heat tail gas cavity have the same height and length but different widths, and the width of the catalyst bed cavity is greater than the width of the waste heat tail gas cavity.

[0020] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0021] 1. The channel-type structured catalyst bed structure in this scheme enables the reactants to be evenly distributed on each layer of catalyst, and the reaction gas flows in a laminar flow. The fine channel structure of the structured catalyst based on metal foam can ensure the high-flux stable flow of gas and the uniform distribution of the reaction gas flow field during the reaction process, avoiding the common reactant retention and dead zone phenomena in traditional reactors, ensuring good contact between the reactants and the catalyst, and significantly improving the reaction rate and selectivity. In addition, compared with the stacked hydrogen production reactor, there is no obvious right-angle inflection point in the cavity of the channel-type reactor, which can greatly reduce the pressure loss of the reactor and improve the overall reaction efficiency. It solves the problem of uneven contact between the reactants and the catalyst in the traditional reactor, especially the dead zone or inefficient zone that is easily formed under high-flux reaction, resulting in a decrease in the catalytic reaction rate, uneven distribution of reactants, and a large pressure loss at the inflection point of the reactor.

[0022] 2. This scheme is based on a channel reactor with a structured catalyst. By adopting a channel-type catalyst bed cavity and a waste heat tail gas cavity, the reactor can be made more compact, and the overall size and space occupancy of the reactor can be effectively compressed, with a higher space utilization rate. Compared with traditional reactors such as shell-and-tube reactors, which are large in size, occupy a large area, cannot effectively utilize space, waste a lot of resources, and have high equipment costs and space occupancy, it can provide more catalytic surface area in the same space, greatly increase the contact area between the catalyst and the feed gas, increase the product gas output, and ensure efficient reaction. At the same time, it greatly saves equipment floor space and construction costs, and reduces the space usage cost in production.

[0023] 3. The structured catalyst in this scheme adopts a structured catalyst based on metal foam. The inner sealing plate is preferably made of copper or copper plating process. The waste heat exhaust cavity is filled with metal foam of the same material to ensure that the heat exchange interface is made of the same material, thereby achieving interface-free heat exchange and reducing the heat loss from the exhaust gas in the waste heat exhaust cavity to the catalyst bed. The staggered and overlapping arrangement of the catalyst bed cavity and the waste heat exhaust cavity fully utilizes the internal heat of the reaction system, reduces the consumption of external energy, reduces the total energy consumption in the reaction process, and improves the overall energy-saving effect of the system.

[0024] 4. The reactor in this scheme adopts a modular design. The catalyst bed in the reactor can be easily disassembled, cleaned and replaced, which reduces the maintenance and replacement costs and solves the problem that the catalyst in the traditional reactor is difficult to replace, especially when dealing with high pollution or high carbon deposition reactions, the catalyst is frequently deactivated, the maintenance and replacement cycle is long, the production shutdown is frequent and the maintenance cost is high.

[0025] 5. The channel reactor based on structured catalyst in this scheme has wide adaptability and can be widely used in the fields of chemistry, environmental protection, petrochemical, pharmaceuticals, etc. Under different reaction conditions, by adjusting the fluid flow, temperature control and catalyst structure inside the reactor, it can flexibly respond to the needs of various catalytic reactions. It is particularly suitable for use as a mobile or tilted device. At the same time, the reactor in this scheme has a compact layout and has enhanced mass transfer and heat transfer characteristics. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the explosion structure of a channel reactor provided according to an embodiment of the utility model;

[0027] Figure 2 It is a schematic structural diagram of a catalyst bed chamber in a channel reactor provided according to an embodiment of the utility model;

[0028] Figure 3 It is a schematic structural diagram of a waste heat tail gas chamber in a channel reactor provided according to an embodiment of the utility model;

[0029] Figure 4 It is a structural schematic diagram of an upper conveying trough plate in a channel type reactor provided according to an embodiment of the utility model;

[0030] Figure 5 It is a structural schematic diagram of a lower conveying trough plate in a channel type reactor provided according to an embodiment of the utility model;

[0031] Figure 6 yes Figure 1 A partial enlarged view of the middle A;

[0032] Figure 7The schematic diagram of the raw gas path of the channel reactor provided according to the embodiment of the utility model is Figure 1 ;

[0033] Figure 8 The schematic diagram of the raw gas path of the channel reactor provided according to the embodiment of the utility model is Figure 2 ;

[0034] Fig. 9 It is a schematic diagram of the waste heat exhaust gas inlet gas path and the waste heat exhaust gas outlet gas path of the channel type reactor provided according to an embodiment of the utility model.

[0035] The accompanying drawings include: sealed shell 1, inner sealing plate 2, catalyst bed cavity 3, waste heat exhaust cavity 4, structured catalyst 5, exhaust gas dispersion pipe 6, exhaust gas collecting pipe 7, connecting pipe one 8, connecting pipe two 9, upper conveying trough plate 10, exhaust gas inlet head 11, exhaust gas outlet head 12, raw gas inlet head 13, lower conveying trough plate 14, product gas outlet head 15, side shell 16, partition plate 17, conveying area one 18, conveying area two 19, conveying area three 20, upper conveying slot 21, dispersion through hole 22, collecting through hole 23, raw gas inlet pipe 24, exhaust gas inlet pipe 25, exhaust gas outlet pipe 26, lower conveying slot 27, product gas outlet 28, exhaust gas conveying hole 29, connecting hole one 30, connecting hole two 31, sub-shell one 32, sub-shell two 33, metal foam body 34. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-9 It should be understood that the specific embodiments described herein are only used to explain the present invention and do not constitute a limitation on the present invention.

[0037] A channel reactor based on a structured catalyst comprises a sealed shell 1 and a plurality of inner sealing plates 2 arranged in parallel in the sealed shell 1, the sealed shell 1 comprises a sub-shell matched and parallel to the inner sealing plates 2, the plurality of inner sealing plates 2 are arranged in parallel in sequence, reaction chambers are formed between adjacent inner sealing plates 2 and between the sub-shells and the inner sealing plates 2, the adjacent reaction chambers are respectively a catalyst bed chamber 3 and a waste heat tail gas chamber 4, the catalyst bed chamber 3 and the waste heat tail gas chamber 4 are arranged alternately in sequence, and the waste heat tail gas chamber 4 is between the sub-shell and the inner sealing plate 2, that is, the end chambers on both outer sides of the channel reactor are waste heat tail gas chambers 4.

[0038] The catalyst bed cavity 3 is filled with a structured catalyst 5 based on metal foam. The structured catalyst 5 is a plate-type catalyst of metal foam. The inner sealing plate 2 is also a plate-type structure. The catalyst bed cavity 3 is a three-layer sandwich structure formed by the inner sealing plate 2 and the structured catalyst 5. The material of the inner sealing plate 2 is preferably copper or copper-plated, and can be expanded to nickel, iron, aluminum and other materials.

[0039] The waste heat exhaust cavity 4 includes an exhaust gas dispersion pipe 6 and an exhaust gas collecting pipe 7 symmetrically arranged on both sides of the cavity. The exhaust gas dispersion pipe 6 and the exhaust gas collecting pipe 7 are filled with a metal foam body 34. The exhaust gas dispersion pipe 6 and the exhaust gas collecting pipe 7 are both provided with a plurality of exhaust gas delivery holes 29. The exhaust gas dispersion pipe 6 and the exhaust gas collecting pipe 7 are both arranged toward the interior of the waste heat exhaust cavity 4.

[0040] A plurality of exhaust gas dispersion pipes 6 are connected by a connecting pipe 1 8, a plurality of exhaust gas collecting pipes 7 are connected by a connecting pipe 2 9, the exhaust gas dispersion pipe 6 is arranged in parallel with the exhaust gas collecting pipe 7, the connecting pipe 1 8 is arranged in parallel with the connecting pipe 2 9, the connecting pipe 1 8 and the connecting pipe 2 9 are perpendicular to the exhaust gas dispersion pipe 6, and the connecting pipe 1 8 and the connecting pipe 2 9 are perpendicular to the exhaust gas collecting pipe 7, such as Figure 6 As shown, a connecting hole 30 is provided at the connection between the connecting pipe 1 and the tail gas dispersion pipe 6, and a connecting hole 31 is provided at the connection between the connecting pipe 2 and the tail gas collection pipe 7. In order to more clearly show the structure of the reactor, Figure 1 Only part of the connecting pipe 1 8 and the connecting pipe 2 9 are shown, and the connecting pipe 1 8 and the connecting pipe 2 9 at D that are spread apart in the exploded view are not shown.

[0041] A connecting through hole is opened on the corner of the inner sealing plate 2, and multiple inner sealing plates 2 are connected by connecting pipe 1 8 and connecting pipe 2 9. Connecting pipe 1 8 and connecting pipe 2 9 connect multiple inner sealing plates 2 in the connecting through hole. Connecting pipe 1 8 and connecting pipe 2 9 are not connected to the catalyst bed cavity 3.

[0042] An upper conveying trough plate 10 is provided on the upper end of the sealed shell 1, and a tail gas inlet head 11 connected to the tail gas dispersion pipe 6 and a tail gas outlet head 12 connected to the tail gas collecting pipe 7 are provided on the upper conveying trough plate 10, and a raw gas inlet head 13 located on the upper conveying trough plate 10 is also included between the tail gas inlet head 11 and the tail gas outlet head 12, and the raw gas inlet head 13 is connected to the catalyst bed cavity 3.

[0043] Two partition plates 17 are provided in the upper conveying trough plate 10, and the upper conveying trough plate 10 includes a conveying zone 1 18, a conveying zone 2 19 and a conveying zone 3 20 which are divided by the two partition plates 17. The conveying zone 18 is located in the middle area of ​​the upper conveying trough plate 10, and the conveying zone 2 19 and the conveying zone 3 20 are respectively located on both sides of the conveying zone 18. The upper and lower sides of the conveying zone 18 are respectively connected to the raw gas inlet head 13 and the catalyst bed cavity 3, the upper and lower sides of the conveying zone 2 19 are respectively connected to the exhaust gas inlet head 11 and the exhaust gas dispersion pipe 6, the upper and lower sides of the conveying zone 3 20 are respectively connected to the exhaust gas outlet head 12 and the exhaust gas collecting pipe 7, the waste heat exhaust cavity 4 is not connected to the conveying zone 18, and the catalyst bed cavity 3 is not connected to the conveying zone 2 19 and the conveying zone 3 20.

[0044] An upper conveying slot 21 connected to the catalyst bed cavity 3 is provided in the conveying zone 18, and each upper conveying slot 21 is matched and connected to a catalyst bed cavity 3. The catalyst bed cavity 3 is a rectangular cavity structure, and the upper conveying slot 21 is a rectangular slot structure. A dispersion hole 22 connected to the exhaust gas dispersion pipe 6 is provided in the conveying zone 2 19, and each dispersion hole 22 is matched and connected to an exhaust gas dispersion pipe 6. A collection hole 23 connected to the exhaust gas collection pipe 7 is provided in the conveying zone 3 20, and each collection hole 23 is matched and connected to an exhaust gas collection pipe 7.

[0045] The raw gas inlet header 13 is connected to a raw gas inlet pipe 24, which is connected to the upper conveying groove 21; the tail gas inlet header 11 is connected to a tail gas inlet pipe 25, which is connected to the dispersion through hole 22; the tail gas outlet header 12 is connected to a tail gas outlet pipe 26, which is connected to the collecting through hole 23.

[0046] A lower conveying slot plate 14 is provided at the lower end of the sealed shell 1, and a product gas outlet head 15 connected to the catalyst bed cavity 3 is provided at the lower end of the lower conveying slot plate 14. A lower conveying slot 27 connected to the catalyst bed cavity 3 is opened on the lower conveying slot plate 14. Each lower conveying slot 27 matches and connects to a catalyst bed cavity 3. The lower conveying slot 27 is a rectangular slot structure. A product gas outlet head 15 is provided with a product gas outlet 28 connected to the lower conveying slot 27.

[0047] The raw gas inlet head 13, the tail gas inlet head 11, the tail gas outlet head 12, and the product gas outlet head 15 are all cubic hollow containers, so that a cavity is formed between the raw gas inlet head 13, the tail gas inlet head 11 and the tail gas outlet head 12 and the upper conveying trough plate 10 as the raw gas and waste heat tail gas inlet area, and the waste heat tail gas outlet area, and a cavity is formed between the product gas outlet head 15 and the lower conveying trough plate 14 as the product gas outlet area.

[0048] The sub-shell matched and parallel to the inner sealing plate 2 includes Figure 1As shown in the sub-shell 1 32 and the sub-shell 2 33, there is a waste heat tail gas cavity 4 between the sub-shell 1 32 and the inner sealing plate 2, and there is a waste heat tail gas cavity 4 between the sub-shell 2 33 and the inner sealing plate 2. A tail gas dispersion pipe 6 and a tail gas collection pipe 7 are provided between the sub-shell 1 32 and the inner sealing plate 2, and between the sub-shell 2 33 and the inner sealing plate 2, so that the ends of both outer sides of the channel reactor end with the waste heat tail gas cavity 4.

[0049] The sealed shell 1 also includes two side shells 16 perpendicular to the sub-shell 1 32 and the sub-shell 2 33. The sub-shell 1 32 and the sub-shell 2 33 are welded to the outer ends of the exhaust gas dispersion pipe 6 and the exhaust gas collection pipe 7 on the outermost sides. The two side shells 16 are welded to the side ends of the sub-shell 1 32, the sub-shell 2 33 and the inner sealing plate 2. The upper conveying trough plate 10 is welded to the upper ends of the sub-shell, the side shell 16 and the inner sealing plate 2. The lower conveying trough plate 14 is welded to the lower ends of the sub-shell, the side shell 16 and the inner sealing plate 2.

[0050] The catalyst bed cavity 3 and the waste heat exhaust cavity 4 have the same height and length but different widths. The width of the catalyst bed cavity 3 is greater than that of the waste heat exhaust cavity 4. In this embodiment, the height h1 of the catalyst bed cavity 3 is 800 mm, the width w1 is 25 mm, and the length k1 is 400 mm. The height h2 of the waste heat exhaust cavity 4 is 800 mm, the width w2 is 15 mm, and the length k2 is 400 mm. The wall thickness of the exhaust gas dispersion pipe 6 and the exhaust gas collecting pipe 7 is 2 mm, the inner diameter is 10 mm, and the hole diameter of the exhaust gas delivery hole 29 is 6 mm.

[0051] The channel reactor includes a raw gas path, a waste heat tail gas inlet path and a waste heat tail gas outlet path. The raw gas path is sequentially formed by a raw gas inlet head 13, an upper conveying trough plate 10, a catalyst bed cavity 3, a lower conveying trough plate 14, and a product gas outlet head 15. Figure 7 and Figure 8 As shown, Figure 7 is a side view, Figure 8 It is a front view.

[0052] The exhaust heat exhaust gas inlet gas path is formed by the exhaust gas inlet gas head 11, the upper conveying trough plate 10, the connecting pipe 1 8, the exhaust gas dispersion pipe 6, and the exhaust heat exhaust cavity 4 in sequence. The exhaust heat exhaust gas outlet gas path is formed by the exhaust heat exhaust cavity 4, the exhaust gas collecting pipe 7, the connecting pipe 2 9, the upper conveying trough plate 10, and the exhaust gas outlet gas head 12 in sequence. The exhaust heat exhaust gas inlet gas path and the exhaust heat exhaust gas outlet gas path are as follows: Fig. 9 shown.

[0053] The usage process is as follows:

[0054] The first gas path: the raw gas path, the mixed gas of methanol and water vapor enters the raw gas inlet header 13 from the raw gas inlet pipe 24, enters the catalyst bed cavity 3 through the rectangular upper conveying groove 21 in the upper conveying trough plate 10, and methanol water vapor reforming reaction occurs under the action of the structured catalyst 5 to generate hydrogen-rich reformed gas required for the operation of the hydrogen internal combustion engine, that is, the product gas. The product gas enters the product gas outlet header 15 through the rectangular lower conveying groove 27 on the lower conveying trough plate 14, and is finally introduced into the hydrogen internal combustion engine through the product gas outlet 28 for the operation of the internal combustion engine.

[0055] The second gas path: the waste heat exhaust gas intake gas path, the waste heat exhaust gas of the hydrogen internal combustion engine enters the exhaust gas intake header 11 from the exhaust gas inlet pipe 25, enters the exhaust gas dispersion pipe 6 through the dispersion through hole 22 in the upper conveying trough plate 10, and enters the waste heat exhaust gas cavity 4 through the exhaust gas delivery hole 29 on the exhaust gas dispersion pipe 6. The waste heat exhaust gas transfers heat to the metal foam body 34 to provide heat for the endothermic reaction in the reactor and maintain the required operating temperature of the reactor.

[0056] The third gas path: the waste heat exhaust gas outlet gas path, the waste heat exhaust gas in the waste heat exhaust chamber 4 enters the exhaust gas outlet header 12 from the exhaust gas delivery hole 29 on the exhaust gas collecting pipe 7 through the exhaust gas collecting pipe 7 and the upper conveying trough plate 10, and is finally discharged out of the reactor through the exhaust gas outlet pipe 26.

[0057] The channel reactor corresponding to this embodiment mainly involves the following chemical reactions:

[0058] Methanol steam reforming reaction: CH3OH+H2O→CO2+3H2.

[0059] The reactor realizes hydrogen production by methanol steam reforming with tail gas heating through heat transfer between waste heat tail gas and methanol steam reforming reaction. The operating temperature of the reactor is 200-300℃.

[0060] The working process of the methanol steam reforming channel reactor filled with metal foam-based structured catalyst 5 and heated by exhaust gas from an integrated hydrogen internal combustion engine is divided into two stages: a startup stage and a hydrogen production stage:

[0061] During the startup phase, only the waste heat exhaust gas inlet and outlet paths are working, including the intake and outlet of the waste heat exhaust gas. First, the air inlet of the hydrogen internal combustion engine is connected to a hydrogen storage cylinder, which can maintain the hydrogen consumption of the hydrogen internal combustion engine during startup. The waste heat exhaust gas generated in this process enters the waste heat exhaust gas inlet path of the reactor, causing the reactor to heat up rapidly. When the reactor reaches the set operating temperature, the startup phase is completed.

[0062] During the hydrogen production stage, the raw gas circuit starts to start up. By adjusting the speed at which the waste heat exhaust gas enters the waste heat exhaust chamber, the reactor temperature can be controlled and the supply of methanol water vapor can be adjusted to obtain different yields of hydrogen according to demand.

[0063] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A channel reactor based on a structured catalyst, characterized in that: It comprises a sealed shell and a plurality of inner sealing plates arranged in parallel in the sealed shell, the sealed shell comprises a sub-shell matched and parallel to the inner sealing plates; reaction chambers are formed between adjacent inner sealing plates and between the sub-shells and the inner sealing plates, the adjacent reaction chambers are respectively a catalyst bed chamber and a waste heat tail gas chamber, the catalyst bed chamber and the waste heat tail gas chamber are arranged alternately in sequence, and the waste heat tail gas chamber is between the sub-shell and the inner sealing plate; The catalyst bed cavity is filled with a structured catalyst based on metal foam; the waste heat tail gas cavity includes a tail gas dispersion pipe and a tail gas collecting pipe symmetrically arranged on both sides of the cavity, and a metal foam body is filled between the tail gas dispersion pipe and the tail gas collecting pipe, multiple tail gas dispersion pipes are connected by a connecting pipe one, multiple tail gas collecting pipes are connected by a connecting pipe two, and multiple inner sealing plates are connected by connecting pipe one and connecting pipe two; an upper conveying trough plate is provided on the upper end of the sealed shell, and a tail gas inlet head connected to the tail gas dispersion pipe and a tail gas outlet head connected to the tail gas collecting pipe are provided on the upper conveying trough plate, and a raw gas inlet head located on the upper conveying trough head is included between the tail gas inlet head and the tail gas outlet head, and the raw gas inlet head is connected to the catalyst bed cavity; a lower conveying trough plate is provided at the lower end of the sealed shell, and a product gas outlet head connected to the catalyst bed cavity is provided at the lower end of the lower conveying trough plate.

2. The channel reactor based on structured catalyst according to claim 1, characterized in that: The channel reactor comprises a raw gas path, a waste heat tail gas inlet path and a waste heat tail gas outlet path; the raw gas path is sequentially formed by a raw gas inlet head, an upper conveying trough plate, a catalyst bed cavity, a lower conveying trough plate, and a product gas outlet head; the waste heat tail gas inlet path is sequentially formed by a tail gas inlet head, an upper conveying trough plate, a connecting pipe 1, a tail gas dispersion pipe, and a waste heat tail gas cavity; the waste heat tail gas outlet path is sequentially formed by a waste heat tail gas cavity, a tail gas collecting pipe, a connecting pipe 2, an upper conveying trough plate, and a tail gas outlet head.

3. The channel reactor based on structured catalyst according to claim 2, characterized in that: Two partition plates are arranged in the upper conveying trough plate, and the upper conveying trough plate includes conveying zone one, conveying zone two and conveying zone three which are divided by the two partition plates; conveying zone one is located in the middle area of ​​the upper conveying trough plate, and conveying zone two and conveying zone three are respectively located on both sides of conveying zone one; the upper and lower sides of conveying zone one are respectively connected with the raw gas inlet head and the catalyst bed cavity, the upper and lower sides of conveying zone two are respectively connected with the exhaust gas inlet head and the exhaust gas dispersion pipe, and the upper and lower sides of conveying zone three are respectively connected with the exhaust gas outlet head and the exhaust gas collection pipe.

4. The channel reactor based on structured catalyst according to claim 3, characterized in that: The conveying zone 1 is provided with an upper conveying slot connected to the catalyst bed cavity, and each upper conveying slot is matched and connected to a catalyst bed cavity; the catalyst bed cavity is a rectangular cavity structure, and the upper conveying slot is a rectangular slot structure.

5. The channel reactor based on structured catalyst according to claim 4, characterized in that: The second transmission zone is provided with dispersion holes connected to the exhaust gas dispersion pipe, and each dispersion hole is matched and connected to an exhaust gas dispersion pipe; the third transmission zone is provided with collection holes connected to the exhaust gas collection pipe, and each collection hole is matched and connected to an exhaust gas collection pipe.

6. The channel reactor based on structured catalyst according to claim 5, characterized in that: The raw gas inlet sealing head is connected with a raw gas inlet pipe, and the raw gas inlet pipe is connected with the upper conveying groove; the tail gas inlet sealing head is connected with a tail gas inlet pipe, and the tail gas inlet pipe is connected with the dispersion through hole; the tail gas outlet sealing head is connected with a tail gas outlet pipe, and the tail gas outlet pipe is connected with the collection through hole.

7. The channel reactor based on structured catalyst according to claim 6, characterized in that: The lower conveying groove plate is provided with a lower conveying groove connected with the catalyst bed cavity, each lower conveying groove matches and connects with a catalyst bed cavity, and the lower conveying groove is a rectangular groove structure; the product gas outlet head is provided with a product gas outlet connected with the lower conveying groove.

8. The channel reactor based on structured catalyst according to claim 7, characterized in that: The exhaust gas dispersion pipe and the exhaust gas collection pipe are both provided with a plurality of exhaust gas delivery holes, and the exhaust gas delivery holes on the exhaust gas dispersion pipe and the exhaust gas collection pipe are both arranged toward the interior of the waste heat exhaust gas cavity.

9. The channel reactor based on structured catalyst according to claim 8, characterized in that: The exhaust gas dispersion pipe is arranged in parallel with the exhaust gas collecting pipe, and the connecting pipe one is arranged in parallel with the connecting pipe two; the connecting pipe one and the connecting pipe two are perpendicular to the exhaust gas dispersion pipe, and the connecting pipe one and the connecting pipe two are perpendicular to the exhaust gas collecting pipe; a connecting hole one connected to the exhaust gas dispersion pipe is provided on the connecting pipe one, and a connecting hole two connected to the exhaust gas collecting pipe is provided on the connecting pipe two, and the connecting pipe two is provided on the connecting pipe.

10. The channel reactor based on structured catalyst according to claim 9, characterized in that: The catalyst bed cavity and the waste heat tail gas cavity have the same height and length but different widths, and the width of the catalyst bed cavity is greater than the width of the waste heat tail gas cavity.

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