An integrated multi-channel reactor and its preparation method and application

Abstract

The present invention discloses an integrated multi-channel reactor, its preparation method, and application. The reactor comprises a plate-type cooling medium reservoir, a multi-channel catalytic reforming reactor bed, and a head. The plate-type cooling medium reservoir and the multi-channel catalytic reforming reactor bed are provided with an air interlayer. The plate-type cooling medium reservoir includes a cooling medium inlet, a cooling medium temperature measuring port, a liquid flow channel, an internal support structure, connectors, and an inter-plate support structure. The multi-channel catalytic reforming reactor bed includes a cooling medium distributor, distribution channels, and a reactor bed. The head includes a first mounting slot, a second mounting slot, a gas collection hole, a collector, and a gas outlet. The reactor of the present invention is integrally formed and replaces the insulation material of high-speed aircraft in situ. It not only has a strong heat absorption capacity and realizes heat-to-work conversion, but also reduces the aircraft insulation layer and increases the system payload.

Description

Technical Field

[0001] The present invention relates to the field of high-speed aircraft, and more specifically, to an integrated multi-channel reactor and a preparation method and application thereof. Background Art

[0002] When a high-speed aircraft is flying, the temperature of its outer wall and surrounding areas rises rapidly due to shock wave compression, viscous friction and other effects. In order to ensure that the internal components work normally within the allowable temperature range and maintain their aerodynamic shape, effective structural thermal protection design must be carried out.

[0003] Thermal protection technologies can be mainly divided into passive and active thermal protection technologies. Among them, active thermal protection technologies are mainly divided into two categories, namely sweat cooling and convection cooling. The commonly used cooling medium for sweat cooling is water. It draws on the way organisms dissipate heat through sweating, using the latent heat of vaporization of water to absorb heat and form a thermal insulation barrier, but the system reliability is poor. Convection cooling is often used in aerospace vehicles or aviation vehicles. Generally, circulating liquid hydrocarbon fuel is used as a coolant, and the heat of the structure surface is taken away by the physical heat capacity of the fuel. Due to the limitation of fuel coking, this heat absorption mode is only suitable for supersonic flight at speeds below Mach 5. Therefore, it is of great significance to develop an efficient and reliable method to absorb the aerodynamic heat of high-speed aircraft. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned defects of the prior art and provide an integrated multi-channel reactor and its preparation method and application. The reactor includes a multi-channel catalytic reforming reaction bed and a plate-type cooling medium storage device, and thus has both working fluid storage and reforming reaction functions; in addition, the plate-type cooling medium storage device and the multi-channel catalytic reforming reaction bed form an air interlayer through the inter-plate support structure, which can effectively prevent aerodynamic heat from being quickly conducted from the multi-channel catalytic reforming reaction bed to the plate-type cooling medium storage device through the metal wall; at the same time, the integrated multi-channel reactor of the present invention can be integrally formed through 3D printing, and can replace the high-speed aircraft insulation material in situ. It not only has a strong heat absorption capacity, but also can generate high-temperature and high-pressure gas to do work, realize heat-to-work conversion, and thereby reduce the aircraft insulation layer and increase the system payload.

[0005] To achieve the above object, the technical solution of the present invention is as follows:

[0006] An integrated multi-channel reactor, the reactor consists of a plate-type cooling medium storage 1, a multi-channel catalytic reforming reaction bed 2 and a head 3; the plate-type cooling medium storage 1 includes a cooling medium inlet 11 and a cooling medium temperature measuring port 12 arranged on the same side, and a liquid flow channel 13 connected to the cooling medium inlet 11, the interior of the liquid flow channel 13 is provided with an internal support structure 14, the plate-type cooling medium storage 1 is used to fill a high-density liquid cooling medium 17; the plate-type cooling medium storage 1 is provided with a connecting piece 15 and an inter-plate support structure 16 on the side close to the multi-channel catalytic reforming reaction bed 2, the inter-plate support structure 16 is used to support the plate-type cooling medium storage 1 and the multi-channel catalytic reforming reaction bed 2 to form an air interlayer 4; the surface of the multi-channel catalytic reforming reaction bed 2 is provided with a through hole 21, the multi-channel catalytic reforming reaction bed The catalytic reforming reaction bed 2 and the plate-type cooling medium storage device 1 are connected through the through hole 21 and the connecting piece 15; the multi-channel catalytic reforming reaction bed 2 is also provided with a cooling medium distributor 22, a distribution channel 23 and a reaction bed 24, and the reaction bed 24 is filled with a catalyst 25; the head 3 includes a first mounting groove 31, a second mounting groove 32, a gas collection hole 33, a collector 34 and a gas outlet 35; the first mounting groove 31 and the second mounting groove 32 are respectively connected to the cooling medium inlet 11 and the cooling medium temperature measuring port 12 to achieve a fixed connection between the head 3 and the plate-type cooling medium storage device 1; and the side where the gas collection hole 33 is located is adapted to the docking surface 26 of the multi-channel catalytic reforming reaction bed 2 to achieve docking and assembly of the head 3 and the multi-channel catalytic reforming reaction bed 2.

[0007] Optionally, the thickness of the air interlayer 4 is 0.8 mm to 5 mm.

[0008] Optionally, the multi-channel catalytic reforming reaction bed 2 is a flat plate structure.

[0009] Optionally, the cross section of the distribution channel 23 is circular or rectangular with rounded corners.

[0010] Optionally, the wall thickness of the multi-channel catalytic reforming reaction bed 2 is 0.4 mm to 1 mm, preferably 0.4 mm to 0.6 mm.

[0011] Optionally, the plate-type cooling medium storage device 1 is a flat plate structure.

[0012] Optionally, the wall thickness of the internal support structure 14 is 0.4 mm to 1 mm, preferably 0.4 mm to 0.6 mm.

[0013] Optionally, the plate-type cooling medium storage 1 is provided with a hydrophilic material or a gravity ball to ensure that the high-density liquid cooling medium 17 can directly enter the multi-channel catalytic reforming reaction bed 2 under the action of vapor pressure in a high-altitude microgravity environment, thereby solving the problem of different gas-liquid components caused by non-azeotropic properties between multiple components of the liquid cooling medium.

[0014] Optionally, the hydrophilic material includes high-temperature resistant fibers or absorbent cloth containing silicon or aluminum, which can be fully wetted by the high-density liquid cooling medium 17 .

[0015] Optionally, the gravity ball is made of porous metal and is connected to the outlet of the plate-type cooling medium storage 1 through a hose. Under the action of microgravity, it can move with the high-density liquid cooling medium 17 and be immersed below the liquid level of the high-density liquid cooling medium 17.

[0016] Optionally, the catalyst 25 includes a carrier and active components and additives supported on the carrier.

[0017] Optionally, the carrier is modified alumina.

[0018] Optionally, the active component includes at least one of Cu, Ni, Fe, Ru and Pt metals.

[0019] Optionally, the auxiliary agent includes one or both of Zn and Ce.

[0020] Optionally, the high-density liquid cooling medium 17 is an alcohol-water mixed solution.

[0021] Optionally, the alcohol component in the alcohol-water mixed solution includes at least one of methanol, ethanol, ethylene glycol, propanol, and isopropanol; and the mass concentration of the alcohol component in the alcohol-water mixed solution is 1% to 100%.

[0022] Preferably, the alcohol component in the alcohol-water mixed solution includes methanol and ethanol, wherein the mass content of methanol in the alcohol-water mixed solution is 10% to 90%, and the mass content of ethanol in the alcohol-water mixed solution is 10% to 50%.

[0023] The present invention also discloses a preparation method of an integrated multi-channel reactor as described above, comprising the following steps: the plate-type cooling medium storage 1, the multi-channel catalytic reforming reaction bed 2 and the head 3 of the reactor are respectively integrally formed by 3D printing; the catalyst 25 is loaded into the reaction bed 24 of the multi-channel catalytic reforming reaction bed 2, and then the multi-channel catalytic reforming reaction bed 2 and the plate-type cooling medium storage 1 are connected through the through hole 21 and the connecting piece 15, the first mounting groove 31 and the second mounting groove 32 of the head are respectively connected to the cooling medium inlet 11 and the cooling medium temperature measuring port 12 of the plate-type cooling medium storage 1 to achieve a fixed connection between the head 3 and the plate-type cooling medium storage 1, and the side where the gas collection hole 33 of the head 3 is located is docked and assembled with the docking surface 26 of the multi-channel catalytic reforming reaction bed 2, and a reliable connection is achieved by welding.

[0024] The present invention also discloses an application of an integrated multi-channel reactor as described above in a high-speed aircraft, comprising the following steps: a high-density liquid cooling medium 17 enters the liquid flow channel 13 through the cooling medium inlet 11, is vaporized by aerodynamic heat, and then enters the multi-channel catalytic reforming reaction bed 2 under pressure to absorb aerodynamic heat through physical phase change latent heat and sensible heat, and contacts the catalyst 25 inside the reaction bed 24 through the cooling medium distributor 22 and the distribution channel 23. Subsequently, a chemical endothermic reaction occurs under the action of the catalyst 25 inside the reaction bed 24 to produce high-pressure gas small molecules, which enter the collector 34 through the gas collection hole 33 and are discharged through the gas outlet 35.

[0025] Specifically, the applications include: rapid evaporation and heat absorption under the influence of aerodynamic heat from high-speed aircraft, maintaining the temperature of the plate-type cooling medium reservoir 1 below 120°C, ensuring the normal operation of the high-speed aircraft's internal payload; the multi-channel catalytic reforming reactor 2 utilizes high-temperature aerodynamic heat (300°C to 800°C) to catalytically decompose the high-density liquid cooling medium 17, producing small molecules of high-pressure combustion gas, which can be directly discharged or used to generate thrust; and the air layer 4 provided between the plate-type cooling medium reservoir 1 and the multi-channel catalytic reforming reactor 2 effectively prevents aerodynamic heat from being rapidly transferred from the multi-channel catalytic reforming reactor 2 to the plate-type cooling medium reservoir 1 through the metal walls. The integrated multi-channel reactor of the present invention effectively absorbs aerodynamic heat, achieving an effective heat sink of over 6.0 MJ / kg for the high-density liquid cooling medium 17, effectively improving the system's aerodynamic thermal management capabilities. Furthermore, the present invention provides a cooling medium temperature measuring port 12 to monitor and test the medium temperature within the plate-type cooling medium reservoir 1 and provide feedback on the temperature signal.

[0026] The implementation of the present invention will have the following beneficial effects:

[0027] (1) Compared with the traditional passive thermal insulation method, the integrated multi-channel reactor of the present invention belongs to the active thermal protection technology, which has the advantages of strong cooling capacity, ability to withstand long-term heating with high-density heat flow, and realization of closed-loop temperature control.

[0028] (2) Compared with the active heat insulation method of water sweating, the integrated multi-channel reactor of the present invention can not only take advantage of the physical heat absorption of the liquid heat-absorbing working medium, but also enhance the heat absorption through chemical reactions. The theoretical maximum heat absorption capacity of the system is more than doubled to >6MJ / kg compared with the heat absorption of water sweating ~3MJ / kg. When further coupled with ammonia decomposition, alcohol decomposition or alcohol-water reforming reactions, the heat absorption performance of the system can be further enhanced.

[0029] (3) The integrated multi-channel reactor of the present invention is an integrated equipment, which has both working fluid storage and reforming reaction functions. An air layer is provided between the multi-channel catalytic reforming reaction bed and the plate-type cooling medium storage device, which can effectively prevent aerodynamic heat from being quickly transferred from the multi-channel catalytic reforming reaction bed to the plate-type cooling medium storage device through the metal wall. It can not only save space, but also serve as a cooling device, absorbing aerodynamic heat and heat dissipated by the operation of electronic components inside the payload aircraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Schematic diagram of an integrated multi-channel reactor according to an embodiment of the present invention.

[0031] Figure 2 Schematic diagram of a plate-type cooling medium storage device according to an embodiment of the present invention, wherein (a) is Figure 1 (b) is a cross-sectional view of the middle plate type cooling medium storage device 1 along the X direction, and (b) is a cross-sectional view along the AA' direction.

[0032] Figure 3 Schematic diagram of a multi-channel catalytic reforming reaction bed according to an embodiment of the present invention, wherein (a) is an overall schematic diagram and (b) is a cross-sectional view along the AA' direction.

[0033] Figure 4 Schematic diagram of the head according to an embodiment of the present invention, wherein (a) is an overall schematic diagram and (b) is an internal structure diagram.

[0034] Figure 5 This is a graph showing the change in gas composition at the reactor outlet with temperature in Example 2 of the present invention.

[0035] Figure 6 This is a graph showing the total heat sink test results for the alcohol-water working medium of Example 3 of the present invention.

[0036] Figure 7 This is a schematic diagram of a plate-type cooling medium storage device according to another embodiment of the present invention.

[0037] Among them, 1. Plate-type cooling medium storage, 11. Cooling medium inlet, 12. Cooling medium temperature measuring port, 13. Liquid flow channel, 14. Internal support structure, 15. Connector; 16. Inter-plate support structure, 17. High-density liquid cooling medium; 2. Multi-channel catalytic reforming reaction bed, 21. Through hole; 22. Cooling medium distributor, 23. Distribution channel, 24. Reaction bed, 25. Catalyst, 26. Docking surface; 3. Head, 31. First mounting groove, 32. Second mounting groove, 33. Gas collection hole, 34. Collector, 35. Gas outlet; 4. Air interlayer. DETAILED DESCRIPTION

[0038] The present invention will be further described below with reference to specific examples, but the present invention is not limited thereto in any way.

[0039] The present invention discloses an integrated multi-channel reactor, which consists of a plate-type cooling medium storage device 1, a multi-channel catalytic reforming reaction bed 2 and a head 3; the plate-type cooling medium storage device 1 includes a cooling medium inlet 11 and a cooling medium temperature measuring port 12 arranged on the same side, and a liquid flow channel 13 connected to the cooling medium inlet 11, an internal support structure 14 is provided inside the liquid flow channel 13, and the plate-type cooling medium storage device 1 is used to fill a high-density liquid cooling medium 17; a connecting piece 15 and an inter-plate support structure 16 are provided on the side of the plate-type cooling medium storage device 1 close to the multi-channel catalytic reforming reaction bed 2, and the inter-plate support structure 16 is used to support the plate-type cooling medium storage device 1 and the multi-channel catalytic reforming reaction bed 2 to form an air interlayer 4; the surface of the multi-channel catalytic reforming reaction bed 2 is provided with through holes 21, the multi-channel catalytic reforming reaction bed 2 and the plate-type cooling medium storage device 1 are connected through the through hole 21 and the connector 15; the multi-channel catalytic reforming reaction bed 2 is also provided with a cooling medium distributor 22, a distribution channel 23 and a reaction bed 24, and the reaction bed 24 is filled with a catalyst 25; the head 3 includes a first mounting groove 31, a second mounting groove 32, a gas collection hole 33, a collector 34 and a gas outlet 35; the first mounting groove 31 and the second mounting groove 32 are respectively connected to the cooling medium inlet 11 and the cooling medium temperature measuring port 12 to realize the fixed connection between the head 3 and the plate-type cooling medium storage device 1; and the side where the gas collection hole 33 is located is adapted to the docking surface 26 of the multi-channel catalytic reforming reaction bed 2 to realize the docking assembly of the head 3 and the multi-channel catalytic reforming reaction bed 2.

[0040] In a specific embodiment, the thickness of the air layer 4 is 0.8 mm to 5 mm.

[0041] In a specific embodiment, the multi-channel catalytic reforming reaction bed 2 is a flat plate structure.

[0042] In a specific embodiment, the cross section of the distribution channel 23 is circular or rectangular with rounded corners.

[0043] In a specific embodiment, the wall thickness of the multi-channel catalytic reforming reaction bed 2 is 0.4 mm to 1 mm, preferably 0.4 mm to 0.6 mm.

[0044] In a specific embodiment, the plate-type cooling medium storage device 1 is a flat plate structure.

[0045] In a specific embodiment, the wall thickness of the internal support structure 14 is 0.4 mm to 1 mm, preferably 0.4 mm to 0.6 mm.

[0046] In a specific embodiment, a hydrophilic material or a gravity ball is provided in the plate-type cooling medium storage 1, which ensures that the high-density liquid cooling medium 17 can directly enter the multi-channel catalytic reforming reaction bed 2 under the action of vapor pressure in a high-altitude microgravity environment, thereby solving the problem of different gas-liquid components caused by non-azeotropic properties between multiple components of the liquid cooling medium.

[0047] In a specific embodiment, the hydrophilic material includes high-temperature resistant fibers or absorbent cloth containing silicon or aluminum, which can be fully wetted by the high-density liquid cooling medium 17 .

[0048] In a specific embodiment, the gravity ball is made of porous metal and is connected to the outlet of the plate-type cooling medium storage 1 through a hose. Under the action of microgravity, it can move with the high-density liquid cooling medium 17 and be immersed below the liquid level of the high-density liquid cooling medium 17.

[0049] In a specific embodiment, the catalyst 25 includes a carrier and active components and additives supported on the carrier.

[0050] In one embodiment, the support is modified alumina.

[0051] In a specific embodiment, the active component includes at least one of Cu, Ni, Fe, Ru, and Pt metals.

[0052] In a specific embodiment, the additive includes one or both of Zn and Ce.

[0053] In a specific embodiment, the high-density liquid cooling medium 17 is an alcohol-water mixed solution.

[0054] In a specific embodiment, the alcohol component in the alcohol-water mixed solution includes at least one of methanol, ethanol, ethylene glycol, propanol, and isopropanol; and the mass concentration of the alcohol component in the alcohol-water mixed solution is 1% to 100%.

[0055] Preferably, the alcohol component in the alcohol-water mixed solution includes methanol and ethanol, wherein the mass content of methanol in the alcohol-water mixed solution is 10% to 90%, and the mass content of ethanol in the alcohol-water mixed solution is 10% to 50%.

[0056] The present invention also discloses a preparation method of an integrated multi-channel reactor as in any embodiment of the present invention, comprising the following steps: the plate-type cooling medium storage 1, the multi-channel catalytic reforming reaction bed 2 and the head 3 of the reactor are respectively integrally formed by 3D printing; the catalyst 25 is loaded into the reaction bed 24 of the multi-channel catalytic reforming reaction bed 2, and then the multi-channel catalytic reforming reaction bed 2 and the plate-type cooling medium storage 1 are connected through the through hole 21 and the connecting piece 15, and the first mounting groove 31 and the second mounting groove 32 of the head are respectively connected to the cooling medium inlet 11 and the cooling medium temperature measuring port 12 of the plate-type cooling medium storage 1 to achieve a fixed connection between the head 3 and the plate-type cooling medium storage 1, and the side where the gas collection hole 33 of the head 3 is located is docked and assembled with the docking surface 26 of the multi-channel catalytic reforming reaction bed 2, and a reliable connection is achieved by welding.

[0057] The present invention also discloses an application of an integrated multi-channel reactor as in any embodiment of the present invention in a high-speed aircraft, comprising the following steps: a high-density liquid cooling medium 17 enters the liquid flow channel 13 through the cooling medium inlet 11, is vaporized by aerodynamic heat, enters the multi-channel catalytic reforming reaction bed 2 under pressure, absorbs aerodynamic heat through physical phase change latent heat and sensible heat, contacts the catalyst 25 inside the reaction bed 24 through the cooling medium distributor 22 and the distribution channel 23, and then undergoes a chemical endothermic reaction under the action of the catalyst 25 inside the reaction bed 24 to produce high-pressure gas small molecules, which enter the collector 34 through the gas collection hole 33 and are discharged through the gas outlet 35.

[0058] The following are specific embodiments

[0059] Example 1

[0060] An integrated multi-channel reactor, such as Figures 1-4 As shown, Figure 1 This is a schematic diagram of an integrated multi-channel reactor according to an embodiment of the present invention. Figure 2 This is a schematic diagram of a plate-type cooling medium storage device according to an embodiment of the present invention. Figure 3 This is a schematic diagram of a multi-channel catalytic reforming reaction bed according to an embodiment of the present invention. Figure 4This is a schematic diagram of the head of an embodiment of the present invention. The reactor consists of a plate-type cooling medium storage 1, a multi-channel catalytic reforming reaction bed 2 and a head 3. The plate-type cooling medium storage 1 includes a cooling medium inlet 11 and a cooling medium temperature measuring port 12 provided on the same side, as well as a liquid flow channel 13 connected to the cooling medium inlet 11. An internal support structure 14 is provided inside the liquid flow channel 13. The plate-type cooling medium storage 1 is used to fill a high-density liquid cooling medium 17. A connector 15 and an inter-plate support structure 16 are provided on the side of the plate-type cooling medium storage 1 close to the multi-channel catalytic reforming reaction bed 2. The inter-plate support structure 16 is used to support the plate-type cooling medium storage 1 and the multi-channel catalytic reforming reaction bed 2 to form an air interlayer 4. The surface of the multi-channel catalytic reforming reaction bed 2 is provided with a through hole 21 The multi-channel catalytic reforming reaction bed 2 and the plate-type cooling medium storage device 1 are connected through the through hole 21 and the connector 15; the multi-channel catalytic reforming reaction bed 2 is also provided with a cooling medium distributor 22, a distribution channel 23 and a reaction bed 24, and the reaction bed 24 is filled with a catalyst 25; the head 3 includes a first mounting groove 31, a second mounting groove 32, a gas collection hole 33, a collector 34 and a gas outlet 35; the first mounting groove 31 and the second mounting groove 32 are respectively connected to the cooling medium inlet 11 and the cooling medium temperature measuring port 12 to realize the fixed connection between the head 3 and the plate-type cooling medium storage device 1; and the side where the gas collection hole 33 is located is adapted to the docking surface 26 of the multi-channel catalytic reforming reaction bed 2 to realize the docking assembly of the head 3 and the multi-channel catalytic reforming reaction bed 2.

[0061] The multi-channel catalytic reforming reaction bed 2 of this embodiment is a flat plate structure, and the cross section of the distribution channel 23 is a rounded rectangle with a wall thickness of 0.6 mm.

[0062] Among them, the plate-type cooling medium storage device 1 of this embodiment is a flat plate structure, and the wall thickness of the internal support structure 14 is 0.6 mm; the plate-type cooling medium storage device 1 is provided with silicon-containing high-temperature resistant fibers that can be fully wetted by the high-density liquid cooling medium 17. In the high-altitude microgravity environment, it is ensured that the high-density liquid cooling medium 17 can directly enter the multi-channel catalytic reforming reaction bed 2 under the action of vapor pressure, thereby solving the problem of different gas-liquid components caused by non-azeotropic properties between multiple components of the liquid cooling medium.

[0063] The catalyst 25 of this embodiment includes a modified alumina carrier and active components CuRu and a Zn additive supported on the modified alumina carrier, wherein the mass fractions of Cu and Ru in the catalyst 25 are 10% and 5% respectively, and the mass fraction of the Zn additive in the catalyst 25 is 3%.

[0064] The high-density liquid cooling medium 17 of this embodiment is a mixed solution of ethanol and water, and the mass concentration of ethanol is 50%.

[0065] The preparation method of the integrated multi-channel reactor of this embodiment includes the following steps: the plate-type cooling medium storage 1, the multi-channel catalytic reforming reaction bed 2 and the head 3 of the reactor are respectively integrally formed by 3D printing; the catalyst 25 is loaded into the reaction bed 24 of the multi-channel catalytic reforming reaction bed 2, and then the multi-channel catalytic reforming reaction bed 2 and the plate-type cooling medium storage 1 are connected through the through hole 21 and the connecting piece 15, and the first mounting groove 31 and the second mounting groove 32 of the head are respectively connected to the cooling medium inlet 11 and the cooling medium temperature measuring port 12 of the plate-type cooling medium storage 1 to achieve a fixed connection between the head 3 and the plate-type cooling medium storage 1, and the side where the gas collection hole 33 of the head 3 is located is docked and assembled with the docking surface 26 of the multi-channel catalytic reforming reaction bed 2, and a reliable connection is achieved by welding.

[0066] The application of the integrated multi-channel reactor of this embodiment in a high-speed aircraft includes the following steps: a high-density liquid cooling medium 17 enters the liquid flow channel 13 through the cooling medium inlet 11, is vaporized by aerodynamic heat, and then enters the multi-channel catalytic reforming reaction bed 2 under pressure to absorb aerodynamic heat through physical phase change latent heat and sensible heat. It contacts the catalyst 25 inside the reaction bed 24 through the cooling medium distributor 22 and the distribution channel 23, and then undergoes a chemical endothermic reaction under the action of the catalyst 25 inside the reaction bed 24 to produce high-pressure gas small molecules. The high-pressure gas small molecules enter the collector 34 through the gas collection hole 33 and are discharged through the gas outlet 35.

[0067] Example 2

[0068] The only difference between this embodiment and embodiment 1 is that the high-density liquid cooling medium 17 in this embodiment is a mixed solution of methanol and water, and the mass concentration of methanol is 60%.

[0069] Example 3

[0070] The only difference between this embodiment and embodiment 1 is that the high-density liquid cooling medium 17 in this embodiment is a mixed solution of methanol and water, and the mass concentration of methanol is 80%.

[0071] Test Case

[0072] The reactors of Examples 2-3 were heated using quartz lamps to evaluate the catalytic reaction activity of the catalysts in the catalytic reforming reactors for different alcohol-water compositions, thereby simulating the aerodynamic thermal scenario of a high-speed aircraft. The reactor surface temperature was adjusted by controlling the power of the quartz lamp array, and the outlet gas was quantified by gas chromatography.

[0073] Depend on Figure 5It can be seen that within the test temperature range, the methanol conversion rate increases significantly with increasing temperature, reaching 100% at 600°C. The product composition shows that when the reaction temperature is below 550°C, the products are mainly H2 and CO, indicating that the methanol decomposition reaction (CH3OH→CO+2H2) occurs primarily. When the reaction temperature reaches 600°C, CO2 appears in the product, indicating that the water gas shift reaction (CO+H2O→CO2+H2) occurs.

[0074] Depend on Figure 6 It can be seen that in Example 3, the working fluid heat sink at different temperatures reaches 4.5 MJ / kg at 400°C, which is 43% higher than the water working fluid heat sink. At 600°C, the heat sink reaches 5.6 MJ / kg, which is 55% higher than the water working fluid heat sink. The reaction gas phase impulse in the entire temperature range exceeds 150s.

[0075] Example 4

[0076] Furthermore, in order to analyze the effect of the thickness of the air interlayer on the heat absorption effect of the system, the wall thickness of the multi-channel reforming reactor in this embodiment is set to 0 mm, 1 mm, 2 mm, and 4 mm, respectively. The rest is the same as in Example 1. The plate storage box 1 and the multi-channel reforming reactor 2 are shown in Table 1.

[0077] Table 1 Surface temperature difference between plate-type cooling medium storage and multi-channel catalytic reforming reactor bed

[0078] Air layer thickness (mm) 0 1 2 4 Multi-channel catalytic reforming reactor bed 2 surface temperature (℃) 600 600 600 600 Plate cooling medium storage 1 surface temperature (°C) 362 190 115 108 Temperature difference (℃) 238 380 485 492

[0079] From the experimental results in Table 1, it can be seen that when the multi-channel catalytic reforming reaction bed 2 and the plate-type cooling medium storage device 1 are in close contact, the surface temperature of the plate-type cooling medium storage device 1 (362°C) is only 238°C lower than the surface temperature of the multi-channel catalytic reforming reaction bed 2 (600°C), indicating that aerodynamic heat can be quickly conducted through the metal outer wall, thereby increasing the temperature of the plate-type cooling medium storage device 1; when the thickness of the air interlayer is increased to 2 mm, the surface temperature of the plate-type cooling medium storage device 1 drops to 115°C, and when it is further increased to 4 mm, the surface temperature of the plate-type cooling medium storage device 1 does not drop significantly, only 108°C. It can be seen that the air interlayer can effectively reduce the temperature increase of the plate-type cooling medium storage device 1 caused by heat conduction, and a thickness of 2 mm is more appropriate.

[0080] Example 5

[0081] The only difference between this embodiment and embodiment 1 is that the multi-channel catalytic reforming reaction bed 2 of this embodiment is a flat plate structure, the cross section of the distribution channel 23 is circular, and the wall thickness is 0.4 mm; a porous metal gravity ball is provided in the plate-type cooling medium storage 1, which is connected to the outlet of the plate-type cooling medium storage 1 through a hose. Under the action of microgravity, it can move with the high-density liquid cooling medium 17 and be immersed below the liquid level of the high-density liquid cooling medium 17, as shown in FIG. Figure 7 shown.

[0082] The effect of this embodiment is the same as that of embodiment 1.

[0083] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. An integrated multi-channel reactor, characterized in that: The reactor is composed of a plate-type cooling medium storage (1), a multi-channel catalytic reforming reaction bed (2) and a head (3); The plate-type cooling medium storage (1) comprises a cooling medium inlet (11) and a cooling medium temperature measuring port (12) arranged on the same side, and a liquid flow channel (13) communicating with the cooling medium inlet (11), wherein an internal support structure (14) is provided inside the liquid flow channel (13), and the plate-type cooling medium storage (1) is used for filling a high-density liquid cooling medium (17); A connecting piece (15) and an inter-plate support structure (16) are provided on one side of the plate-type cooling medium storage (1) close to the multi-channel catalytic reforming reaction bed (2), and the inter-plate support structure (16) is used to support the plate-type cooling medium storage (1) and the multi-channel catalytic reforming reaction bed (2) to form an air interlayer (4); A through hole (21) is provided on the surface of the multi-channel catalytic reforming reaction bed (2), and the multi-channel catalytic reforming reaction bed (2) and the plate-type cooling medium storage device (1) are connected via the through hole (21) and the connecting member (15); The multi-channel catalytic reforming reaction bed (2) is further provided with a cooling medium distributor (22), a distribution channel (23) and a reaction bed (24), and the reaction bed (24) is filled with a catalyst (25); The sealing head (3) comprises a first mounting groove (31), a second mounting groove (32), a gas collecting hole (33), a collector (34) and a gas outlet (35); The first mounting groove (31) and the second mounting groove (32) are respectively connected to the cooling medium inlet (11) and the cooling medium temperature measuring port (12) to achieve a fixed connection between the head (3) and the plate-type cooling medium storage device (1); and the side where the gas collection hole (33) is located is adapted to the docking surface (26) of the multi-channel catalytic reforming reaction bed (2) to achieve docking assembly of the head (3) and the multi-channel catalytic reforming reaction bed (2).

2. The integrated multi-channel reactor according to claim 1, characterized in that: The multi-channel catalytic reforming reaction bed (2) is a flat plate structure; The cross section of the distribution channel (23) is circular or rectangular with rounded corners; The wall thickness of the multi-channel catalytic reforming reaction bed (2) is 0.4 mm to 1 mm.

3. The integrated multi-channel reactor according to claim 1, characterized in that: The plate-type cooling medium storage device (1) is a flat plate structure. The wall thickness of the internal support structure (14) is 0.4 mm to 1 mm.

4. The integrated multi-channel reactor according to claim 1, characterized in that: The plate-type cooling medium storage device (1) is provided with a hydrophilic material or a gravity ball, which ensures that the high-density liquid cooling medium (17) can directly enter the multi-channel catalytic reforming reaction bed (2) under the action of vapor pressure in a high-altitude microgravity environment.

5. The integrated multi-channel reactor according to claim 4, characterized in that: The hydrophilic material includes high temperature resistant fiber or absorbent cloth containing silicon or aluminum; The gravity ball is made of porous metal and is connected to the outlet of the plate-type cooling medium storage (1) through a hose. Under the action of microgravity, it can move with the high-density liquid cooling medium (17) and be immersed below the liquid level of the high-density liquid cooling medium (17).

6. The integrated multi-channel reactor according to claim 1, characterized in that: The thickness of the air interlayer (4) is 0.8 mm to 5 mm.

7. The integrated multi-channel reactor according to claim 1, characterized in that: The catalyst (25) includes a carrier and an active component and an auxiliary agent supported on the carrier; The carrier is modified alumina; The active component includes at least one of Cu, Ni, Fe, Ru and Pt metals; The auxiliary agent includes one or both of Zn and Ce.

8. The integrated multi-channel reactor according to claim 1, characterized in that: The high-density liquid cooling medium (17) is an alcohol-water mixed solution; The alcohol component in the alcohol-water mixed solution includes at least one of methanol, ethanol, ethylene glycol, propanol, and isopropanol; The mass concentration of the alcohol component in the alcohol-water mixed solution is 1% to 100%.

9. A method for preparing the integrated multi-channel reactor according to any one of claims 1 to 8, characterized in that: The following steps are involved: The plate-type cooling medium storage (1), the multi-channel catalytic reforming reaction bed (2), and the head (3) of the reactor are integrally formed by 3D printing. The catalyst (25) is loaded into the reaction bed (24) of the multi-channel catalytic reforming reaction bed (2), and then the multi-channel catalytic reforming reaction bed (2) and the plate-type cooling medium storage (1) are connected through the through hole (21) and the connecting piece (15). The first mounting groove (31) and the second mounting groove (32) of the head are respectively connected to the cooling medium inlet (11) and the cooling medium temperature measuring port (12) of the plate-type cooling medium storage (1) to achieve a fixed connection between the head (3) and the plate-type cooling medium storage (1), and the side where the gas collection hole (33) of the head (3) is located is docked and assembled with the docking surface (26) of the multi-channel catalytic reforming reaction bed (2), and a reliable connection is achieved by welding.

10. Use of the integrated multi-channel reactor according to any one of claims 1 to 8 in a high-speed aircraft, characterized in that: The following steps are involved: The high-density liquid cooling medium (17) enters the liquid flow channel (13) through the cooling medium inlet (11), is heated and vaporized by aerodynamic heat, and then enters the multi-channel catalytic reforming reaction bed (2) under pressure to absorb aerodynamic heat through physical phase change latent heat and sensible heat. It contacts the catalyst (25) inside the reaction bed (24) through the cooling medium distributor (22) and the distribution channel (23), and then undergoes a chemical endothermic reaction under the action of the catalyst (25) inside the reaction bed (24) to generate high-pressure gas small molecules. The high-pressure gas small molecules enter the collector (34) through the gas collection hole (33) and are discharged through the gas outlet (35).

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