Integrated multi-channel reactor as well as preparation method and application thereof

Abstract

The invention discloses an integrated multi-channel reactor as well as a preparation method and application thereof. The reactor consists of a plate-type cooling medium storage device, a multi-channel catalytic reforming reaction bed and an end socket, the plate-type cooling medium storage device and the multi-channel catalytic reforming reaction bed are provided with air interlayers; the plate type cooling medium storage device comprises a cooling medium inlet, a cooling medium temperature measuring opening, a liquid flow channel, an internal supporting structure, a connecting piece and an inter-plate supporting structure. The multi-channel catalytic reforming reaction bed comprises a cooling medium distributor, a distribution hole channel and a reaction bed; the sealing head comprises a first mounting groove, a second mounting groove, a gas collecting hole, a collector and a gas outlet. The reactor is integrally formed and replaces a high-speed aircraft heat insulation material in situ, the heat absorption capacity is high, heat-work conversion is achieved, then the aircraft heat insulation layer is lowered, and the effective load of the system is increased.

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 nearby areas rises rapidly due to shock wave compression, viscous friction and other effects. In order to ensure that 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 technology can be mainly divided into passive and active thermal protection technology. Among them, active thermal protection technology is 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, uses 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. It can be seen that 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 a preparation method and application thereof. The reactor comprises 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 surface; at the same time, the integrated multi-channel reactor of the present invention can be integrally formed through 3D printing, and in-situ replaces the high-speed aircraft insulation material, which not only has a strong heat absorption capacity, but also can generate high-temperature and high-pressure gas to do work, thereby realizing heat-to-work conversion, thereby reducing the aircraft insulation layer and increasing 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 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, the liquid flow channel 13 is provided with an internal support structure 14 inside, and the plate-type cooling medium storage device 1 is used to fill a high-density liquid cooling medium 17; the plate-type cooling medium storage device 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, 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 a through hole 21, and the multi-channel catalytic reforming reaction bed 2 is provided with a through hole 21. 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 end cap 3 includes 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 realize the fixed connection between the end cap 3 and the plate-type cooling medium storage device 1; and the side where the gas collecting 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 end cap 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 rounded rectangular.

[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 device 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 among 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 device 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 method for preparing an integrated multi-channel reactor as described above, comprising the following steps: the plate-type cooling medium storage device 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 device 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 device 1 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 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, enters the multi-channel catalytic reforming reaction bed 2 under pressure, absorbs aerodynamic heat by 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.

[0025] Specifically, the application includes: under the action of aerodynamic heat of high-speed aircraft, it can quickly evaporate and absorb heat, so that the temperature of the plate-type cooling medium storage device 1 is maintained below 120°C, ensuring the normal operation of the internal load of the high-speed aircraft; the multi-channel catalytic reforming reaction bed 2 can use the high-temperature aerodynamic heat of 300°C to 800°C to catalytically decompose the high-density liquid cooling medium 17, and produce high-pressure gas small molecules, which can be directly discharged or used to do work to generate thrust; the air interlayer 4 provided between the plate-type cooling medium storage device 1 and the multi-channel catalytic reforming reaction bed 2 can effectively prevent the aerodynamic heat from being quickly conducted from the multi-channel catalytic reforming reaction bed 2 to the plate-type cooling medium storage device 1 through the metal wall. The integrated multi-channel reactor of the present invention can effectively absorb aerodynamic heat, and the effective heat sink of the high-density liquid cooling medium 17 reaches more than 6.0MJ / kg, effectively improving the aerodynamic thermal management capability of the system; at the same time, the present invention sets a cooling medium temperature measuring port 12 to monitor and test the medium temperature inside the plate-type cooling medium storage device 1, and feedback the temperature signal.

[0026] Implementing the embodiments 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 of 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 medium, but also enhance the heat absorption through chemical reactions. The theoretical maximum heat absorption capacity of the system is more than doubled compared with the heat absorption of water sweating ~3MJ / kg >6MJ / 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 diagram along the AA' direction.

[0033] Figure 4 Schematic diagram of the head of 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 the gas composition at the reactor outlet as a function of 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 fluid 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 device, 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 is further described below in conjunction with specific embodiments, but the present invention is not limited 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, and an internal support structure 14 is arranged 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 arranged on one 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; a through hole is arranged on the surface of the multi-channel catalytic reforming reaction bed 2 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 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 with 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 collecting 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 rounded rectangular.

[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 device 1, so as 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 among 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 device 1 through a hose. Under the action of microgravity, the gravity ball 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 an active component and an auxiliary agent 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 method for preparing an integrated multi-channel reactor as in any embodiment of the present invention, comprising the following steps: the plate-type cooling medium storage device 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 device 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 device 1 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 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 by 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 Figure 1-Figure 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 4The schematic diagram of the end cap of an embodiment of the present invention is shown in FIG. 1 . The reactor is composed of a plate-type cooling medium storage device 1, a multi-channel catalytic reforming reaction bed 2 and an end cap 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 arranged inside the liquid flow channel 13. The plate-type cooling medium storage device 1 is used to fill a high-density liquid cooling medium 17. A connector 15 and an inter-plate support structure 16 are arranged on one side of the plate-type cooling medium storage device 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 device 1 and the multi-channel catalytic reforming reaction bed 2 to form an air interlayer 4. A through hole 21 is arranged on the surface of the multi-channel catalytic reforming reaction bed 2. 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 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 realize the fixed connection between the head 3 and the plate-type cooling medium storage device 1; and the side where the gas collecting 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 promoter Zn loaded 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 promoter Zn 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 the present embodiment comprises the following steps: the plate-type cooling medium storage device 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 device 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 with the cooling medium inlet 11 and the cooling medium temperature measuring port 12 of the plate-type cooling medium storage device 1 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 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, 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 fuel gas small molecules, and the high-pressure fuel 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 reactor of Example 2-3 was heated by a quartz lamp to evaluate the catalytic reaction activity of the catalyst in the catalytic reforming reactor for different alcohol-water components, thereby simulating the aerodynamic thermal scene of a high-speed aircraft. The surface temperature of the reactor 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 in the test temperature range, the methanol conversion rate increases significantly with the increase of temperature, and the conversion rate reaches 100% at 600°C. From the product composition, it can be seen that when the reaction temperature is lower than 550°C, the products are mainly H2 and CO, indicating that the main methanol decomposition reaction occurs (CH3OH→CO+2H2). When the reaction temperature reaches 600°C, CO2 appears in the product, indicating that the water vapor shift reaction occurs (CO+H2O→CO2+H2).

[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, and 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 (℃) 362 190 115 108 Temperature difference (℃) 238 380 485 492

[0079] It can be seen from the experimental results in Table 1 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) and the surface temperature of the multi-channel catalytic reforming reaction bed 2 (600°C) differ by only 238°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 increases 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, which shows 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] Compared with Example 1, the present embodiment is different from Example 1 only in that: the multi-channel catalytic reforming reaction bed 2 of the present 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, and 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 under the action of microgravity, such as Figure 7 shown.

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

[0083] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached 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 device (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) connected to the cooling medium inlet (11), wherein an internal support structure (14) is arranged 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 one 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), and the multi-channel catalytic reforming reaction bed (2) and the plate-type cooling medium storage device (1) are connected via the through holes (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 fixed connection between the end cap (3) and the plate-type cooling medium storage device (1); and the side where the gas collecting hole (33) is located is matched with the docking surface (26) of the multi-channel catalytic reforming reaction bed (2) to achieve docking assembly between the end cap (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 device (1) via a hose. Under the action of microgravity, the gravity ball can move with the high-density liquid cooling medium (17) and be immersed below the liquid surface 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) comprises 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 an integrated multi-channel reactor as claimed in 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 end cap (3) of the reactor are integrally formed by 3D printing respectively; 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 device (1) are connected through the through hole (21) and the connecting piece (15). The first installation groove (31) and the second installation groove (32) of the end cap are respectively connected to the cooling medium inlet (11) and the cooling medium temperature measuring port (12) of the plate-type cooling medium storage device (1) to achieve a fixed connection between the end cap (3) and the plate-type cooling medium storage device (1), and the side where the gas collection hole (33) of the end cap (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, 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 generate high-pressure gas small molecules, which enter the collector (34) through the gas collection hole (33) and are discharged through the gas outlet (35).

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