Sandwich type multi-channel reaction system and application thereof

Abstract

The invention discloses an interlayer type multi-channel reaction system and application thereof. The interlayer type multi-channel reaction system comprises a plate type storage tank, a multi-channel reforming reactor, a locking electromagnetic valve, a heat-work conversion storage tank, a safety valve, an acting electromagnetic valve and an acting thruster, an air interlayer is arranged between the multi-channel reforming reactor and the plate type storage box; a catalyst is arranged in the multi-channel reforming reactor, and a liquid cooling working medium is arranged in the plate type storage tank; the plate-type storage box, the multi-channel reforming reactor and the heat-work conversion storage box are sequentially connected, a first outlet of the heat-work conversion storage box is connected with the work-doing thruster through the work-doing electromagnetic valve, and a second outlet of the heat-work conversion storage box is communicated with the outside through the safety valve; the plate type storage box and the multi-channel reforming reactor are of flat plate type structures; a plurality of thin-wall pressure-bearing channels are arranged inside the multi-channel reforming reactor, and reinforcing ribs are arranged in the plate-type storage box. The system can be used for a high-speed aircraft, the pneumatic heat management capacity of the system is effectively improved, meanwhile, harmful pneumatic heat is used for generating high-temperature and high-pressure small molecule gas to do work, and heat-work conversion is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of high-speed aircraft, and more specifically, to a sandwich multi-channel reaction system and application thereof. Background Art

[0002] Thermal protection technology can be mainly divided into passive and active thermal protection technology. Passive thermal protection that uses thermal protection materials for insulation or ablative materials for phase change to absorb heat is the most widely used aerodynamic heat treatment measure and is used in many high-speed aircraft. This type of thermal protection technology has a relatively simple structure, but the preparation process is complex and the cost is high. When the ablative heat protection system is flying at high speed, the material will gradually be ablated as the temperature rises, which can easily change the overall aerodynamic shape and cause accidents. At the same time, due to the weak heat absorption capacity of the passive thermal protection system, the thickness and weight of the materials required in long-flight applications are large, which seriously compresses the payload of the aircraft. 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 applicable to supersonic flight at speeds below Mach 5. In recent years, with the further improvement of aircraft performance, especially the development of long-endurance global strike strategic aircraft, its aerodynamic thermal environment has become more complex and harsh. In addition, due to the rapid upgrade and iteration of electronic components in the internal load of aircraft in recent years, the operating power and the heat generated by it have increased rapidly. Therefore, achieving efficient heat dissipation of internal loads has become one of the key issues for the stable operation of aircraft. 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.

[0003] In view of the above difficulties, based on experimental and theoretical research, it is found that when a mixed solution of alcohol and water is used as the cooling medium of the active thermal protection system, it can absorb a large amount of aerodynamic heat through physical vaporization reaction. In particular, when the system contains a suitable catalyst, it can catalyze the strong endothermic reforming reaction of alcohol and water. Taking ethanol and water solution as an example, the reforming reaction after vaporization can generate hydrogen and carbon monoxide (Equation 1), the gas volume increases three times, and the heat absorbed per mole of fluid reaches 256.8kJ. When the aerodynamic heat temperature reaches 600℃, the heat absorption of pure water is only 3.6MJ / Kg, while the total amount of physical and chemical heat absorption of the mixed solution of ethanol and water under the same conditions can reach more than 6.2MJ / Kg. In addition, the small molecular gases (such as hydrogen and carbon monoxide) produced can be used to do work externally. Therefore, based on this active thermal protection technology, not only can the heat absorption capacity of the system be improved, but also aerodynamic heat can be converted into chemical energy to achieve heat-to-work conversion, thereby reducing the thickness of the aircraft insulation layer, increasing the system payload, and improving the maneuverability of the aircraft.

[0004]

[0005] However, it was found that in a high-altitude microgravity environment, there would be non-azeotropic properties between the multiple components of the cooling medium, resulting in different gas-liquid components. At the same time, the inventors conducted in-depth research in the heat-to-work conversion system and found that due to the space and load limitations of high-speed aircraft, the above heat-to-work conversion system must have the following characteristics at the same time: 1) The heat-to-work conversion system is light in weight and thin in thickness; 2) The degree of integration is high, which is convenient for in-situ replacement of passive insulation panels; 3) The storage temperature of the alcohol-water medium is not higher than 120°C, so that its vapor pressure is low, thereby reducing the thickness of the storage tank wall and reducing the weight of the system; 4) The temperature of the catalyst and reactor is not lower than 300°C to ensure that the reforming reaction is fast and efficient. Therefore, the development of suitable reaction and storage containers is the key to the efficient operation of the heat-to-work conversion system. Summary of the invention

[0006] The purpose of the present invention is to overcome the above-mentioned defects of the prior art and to provide a sandwich multi-channel reaction system and its application. The system comprises a multi-channel reforming reactor and a plate-type storage tank, and thus has both working fluid storage and reforming reaction functions. There is an air interlayer between the multi-channel reforming reactor and the plate-type storage tank, which can effectively prevent aerodynamic heat from being quickly conducted from the reforming reactor to the storage tank through the metal wall. In addition, the sandwich heat-to-work conversion plate can be integrally formed to 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, thereby realizing heat-to-work conversion, thereby reducing the aircraft insulation layer and increasing the system payload.

[0007] To achieve the above object, the technical solution of the present invention is as follows:

[0008] A sandwich multi-channel reaction system, the system comprising: a plate storage tank 1, a multi-channel reforming reactor 2, a locking solenoid valve 3, a heat-work conversion storage tank 4, a safety valve 5, a working solenoid valve 6, and a working thruster 7; an air interlayer 8 is provided between the multi-channel reforming reactor 2 and the plate storage tank 1; a catalyst 9 is filled in the multi-channel reforming reactor 2, and a high-density liquid cooling medium 10 is filled in the plate storage tank 1; the outlet of the plate storage tank 1 is connected to the inlet of the multi-channel reforming reactor 2, and the multi-channel reforming The outlet of the reactor 2 is connected to the inlet of the heat-to-work conversion tank 4 through the locking solenoid valve 3; the heat-to-work conversion tank 4 is also provided with a first outlet 41 and a second outlet 42, the first outlet 41 is connected to the working thruster 7 through the working solenoid valve 6, and the second outlet 42 is connected to the outside through the safety valve 5; the plate-type tank 1 and the multi-channel reforming reactor 2 are both flat-plate structures; a plurality of thin-walled pressure-bearing channels are arranged inside the multi-channel reforming reactor 2, and reinforcing ribs are arranged in the plate-type tank 1.

[0009] Optionally, the cross-section of the thin-walled pressure-bearing channel is circular or rectangular with rounded corners.

[0010] Optionally, the plate storage box 1 is provided with a hydrophilic material or a gravity ball, which can ensure that the high-density liquid cooling medium 10 directly enters the multi-channel reforming reactor 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 high-density liquid cooling medium 10.

[0011] 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 10 .

[0012] Optionally, the gravity ball is made of porous metal and is connected to the outlet of the plate storage tank 1 through a hose. Under the action of microgravity, the gravity ball can move with the high-density liquid cooling medium 10 and be immersed below the liquid level of the high-density liquid cooling medium 10.

[0013] Optionally, the thickness of the air interlayer 8 is 0.8 mm to 5 mm.

[0014] Optionally, the wall thickness of the multi-channel reforming reactor 2 is 0.4 mm to 1 mm, preferably, the wall thickness is 0.4 mm to 0.6 mm.

[0015] Optionally, the wall thickness of the plate type storage box 1 is 0.4 mm to 1 mm, preferably, the wall thickness is 0.4 mm to 0.6 mm.

[0016] Optionally, the catalyst 9 includes a modified alumina carrier and active components and additives supported on the modified alumina carrier.

[0017] Optionally, the active component includes at least one of Cu, Ni, Fe, Ru and Pt metals, and the mass of the active component accounts for 5% to 30% of the total mass of the catalyst.

[0018] Optionally, the auxiliary agent includes Zn and / or Ce, and the mass of the auxiliary agent accounts for 1% to 10% of the total mass of the catalyst.

[0019] Optionally, the high-density liquid cooling medium 10 is an alcohol-water mixed solution.

[0020] Optionally, the alcohol component in the alcohol-water mixed solution includes at least one of methanol, ethanol, ethylene glycol, propanol and isopropanol.

[0021] Optionally, the mass concentration of the alcohol component in the alcohol-water mixed solution is 1% to 100%.

[0022] Optionally, the alcohol components in the alcohol-water mixed solution are 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 an application of the sandwich multi-channel reaction system in a high-speed aircraft, the application comprising the following steps: the high-density liquid cooling medium 10 in the plate-type storage tank 1 is vaporized by aerodynamic heat heating, and then enters the multi-channel reforming reactor 2 through the outlet of the plate-type storage tank 1 through a pipeline under pressure to absorb aerodynamic heat by physical phase change latent heat and sensible heat, and then undergoes a chemical endothermic reaction under the action of a catalyst 9 to generate high-pressure gas small molecules, and the high-pressure gas small molecules enter the heat-work conversion storage tank 4 through a locking solenoid valve 3 for storage;

[0024] When the high-speed aircraft needs to adjust its attitude, the safety valve 5 is closed, and the working solenoid valve 6 is opened to introduce the high-pressure fuel gas small molecules into the working thruster 7, and the small molecules are discharged through the working thruster 7, thereby generating thrust by working.

[0025] When the high-speed aircraft does not need additional power and the pressure of the heat-to-work conversion tank 4 is greater than 2MPa, the working solenoid valve 6 is closed, the safety valve 5 is opened, and the small molecules of the high-pressure fuel gas are discharged through the safety valve 5 until the pressure of the heat-to-work conversion tank 4 is 0.5MPa~1MPa, and then the safety valve 5 is closed.

[0026] Specifically, after being heated by aerodynamic heat, the high-density liquid cooling medium 10 in the plate storage tank 1 is vaporized, which increases the pressure of the plate storage tank 1, and then squeezes the liquid working medium 10, so that it enters the multi-channel reforming reactor 2 through the pipeline; the vaporized high-density liquid cooling medium 10 absorbs part of the aerodynamic heat through physical phase change latent heat and sensible heat in the multi-channel reforming reactor 2, and then further undergoes a strongly endothermic reforming reaction under the action of the catalyst 9, and the generated high-pressure fuel gas small molecules are discharged into and stored in the heat-to-work conversion tank 4. When it is necessary to do work externally, the work solenoid valve 6 is opened, and the high-pressure gas in the heat-to-work conversion tank 4 is discharged through the work thruster 7 to generate thrust; when the pressure of the heat-to-work conversion tank 4 exceeds the rated working pressure, the safety valve 5 is opened to exhaust to ensure the safety of the system.

[0027] Specifically, under the action of aerodynamic heat of high-speed aircraft, it can quickly evaporate and absorb heat, so that the temperature of the plate storage tank 1 is maintained below 120°C, ensuring the normal operation of the internal load of the high-speed aircraft; the multi-channel reforming reactor 2 can use high-temperature aerodynamic heat (300°C~800°C) to catalytically decompose the high-density liquid cooling medium 10 to produce high-pressure fuel gas small molecules, which are used to do work and generate thrust; the air interlayer 8 can effectively prevent aerodynamic heat from being quickly transmitted from the multi-channel reforming reactor 2 to the plate storage tank 1 through the metal wall; the interlayer multi-channel reaction system of the present invention can effectively absorb aerodynamic heat, and the effective heat sink of the high-density liquid cooling medium 10 reaches more than 6.0MJ / kg, which effectively improves the system's aerodynamic thermal management capabilities, and at the same time uses "harmful" aerodynamic heat to generate high-temperature and high-pressure small molecule gas to do work, with a specific impulse of 150s, realizing heat-to-work conversion.

[0028] Implementing the embodiments of the present invention will have the following beneficial effects:

[0029] (1) Compared with the traditional passive heat insulation method, the sandwich multi-channel reaction system of the present invention belongs to active thermal protection technology, which can be used for the active thermal protection system of high-speed aircraft, and has the advantages of strong cooling capacity, being able to withstand long-term heating of high-density heat flow, and realizing closed-loop temperature control;

[0030] (2) Compared with the active heat insulation method of water sweating, the sandwich multi-channel reaction system 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 (>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, and thrust can be generated to do work.

[0031] (3) In the sandwich multi-channel reaction system of the present invention, the sandwich heat-to-work conversion plate can be integrated to have both working fluid storage and reforming reaction functions. There is an air layer between the reactor and the storage tank, which can effectively prevent aerodynamic heat from being quickly transferred from the reforming reactor to the storage tank through the metal wall. It can not only save space, but also serve as a cooling device to absorb aerodynamic heat and heat dissipated by the operation of the load (electronic components inside the aircraft). BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of a sandwich multi-channel reaction system according to Example 1 of the present invention.

[0033] Figure 2 This is a side view of the 3D model of the multi-channel reforming reactor according to Example 1 of the present invention.

[0034] Figure 3 This is a cross-sectional view of the 3D model of the multi-channel reforming reactor according to Example 1 of the present invention.

[0035] Figure 4 Schematic diagram of a plate storage tank with a gravity ball according to Example 1 of the present invention.

[0036] Figure 5 This is a graph showing the change in gas composition at the outlet of the heat-to-work conversion plate as a function of temperature in Example 2 of this embodiment.

[0037] Figure 6 This is a graph showing the total heat sink test results of the alcohol-water working fluid of Example 4 of the present invention.

[0038] Among them, 1. Plate storage tank; 2. Multi-channel reforming reactor; 3. Locking solenoid valve; 4. Heat-to-work conversion tank; 41. First outlet; 42. Second outlet; 5. Safety valve; 6. Working solenoid valve; 7. Working thruster; 8. Air interlayer; 9. Catalyst; 10. High-density liquid cooling medium. DETAILED DESCRIPTION

[0039] The present invention is further described below in conjunction with specific embodiments, but the present invention is not limited in any way.

[0040] The present invention discloses a sandwich type multi-channel reaction system, which comprises: a plate storage tank 1, a multi-channel reforming reactor 2, a locking solenoid valve 3, a heat-work conversion storage tank 4, a safety valve 5, a working solenoid valve 6, and a working thruster 7; an air interlayer 8 is arranged between the multi-channel reforming reactor 2 and the plate storage tank 1; a catalyst 9 is filled in the multi-channel reforming reactor 2, and a high-density liquid cooling medium 10 is filled in the plate storage tank 1; the outlet of the plate storage tank 1 is connected to the inlet of the multi-channel reforming reactor 2, and the outlet of the multi-channel reforming reactor 2 is connected to the inlet of the heat-work conversion storage tank 4 through the locking solenoid valve 3; the heat-work conversion storage tank 4 is also provided with a first outlet 41 and a second outlet 42, the first outlet 41 is connected to the working thruster 7 through the working solenoid valve 6, and the second outlet 42 is connected to the outside through the safety valve 5; the plate storage tank 1 and the multi-channel reforming reactor 2 are both flat plate structures; a plurality of thin-walled pressure-bearing channels are arranged inside the multi-channel reforming reactor 2, and reinforcing ribs are arranged in the plate storage tank 1.

[0041] In a specific embodiment, the cross-section of the thin-walled pressure-bearing channel is circular or rectangular with rounded corners.

[0042] In a specific embodiment, a hydrophilic material or a gravity ball is provided in the plate storage box 1, which can ensure that the high-density liquid cooling medium 10 directly enters the multi-channel reforming reactor 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 high-density liquid cooling medium 10.

[0043] 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 10 .

[0044] In a specific embodiment, the gravity ball is made of porous metal and is connected to the outlet of the plate storage tank 1 through a hose. Under the action of microgravity, the gravity ball can move with the high-density liquid cooling medium 10 and be immersed below the liquid level of the high-density liquid cooling medium 10.

[0045] In a specific embodiment, the thickness of the air layer 8 is 0.8 mm to 5 mm.

[0046] In a specific embodiment, the wall thickness of the multi-channel reforming reactor 2 is 0.4 mm to 1 mm, preferably, the wall thickness is 0.4 mm to 0.6 mm.

[0047] In a specific embodiment, the wall thickness of the plate type storage box 1 is 0.4 mm to 1 mm, preferably, the wall thickness is 0.4 mm to 0.6 mm.

[0048] In a specific embodiment, the catalyst 9 includes a modified alumina carrier and an active component and an auxiliary agent supported on the modified alumina carrier.

[0049] In a specific embodiment, the active component includes at least one of Cu, Ni, Fe, Ru and Pt metals, and the mass of the active component accounts for 5% to 30% of the total mass of the catalyst.

[0050] In a specific embodiment, the auxiliary agent includes Zn and / or Ce, and the mass of the auxiliary agent accounts for 1% to 10% of the total mass of the catalyst.

[0051] In a specific embodiment, the high-density liquid cooling medium 10 is an alcohol-water mixed solution.

[0052] 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.

[0053] In a specific embodiment, the mass concentration of the alcohol component in the alcohol-water mixed solution is 1% to 100%.

[0054] In a specific embodiment, the alcohol components in the alcohol-water mixed solution are 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%.

[0055] The present invention also discloses an application of a sandwich multi-channel reaction system as in any embodiment of the present invention in a high-speed aircraft, and the application comprises the following steps: the high-density liquid cooling medium 10 in the plate-type storage tank 1 is heated and vaporized by aerodynamic heat, and then enters the multi-channel reforming reactor 2 through the outlet of the plate-type storage tank 1 through a pipeline under pressure to absorb aerodynamic heat by physical phase change latent heat and sensible heat, and then a chemical endothermic reaction occurs under the action of a catalyst 9 to generate high-pressure gas small molecules, and the high-pressure gas small molecules enter the heat-work conversion storage tank 4 through the locking solenoid valve 3 for storage;

[0056] When the high-speed aircraft needs to adjust its attitude, the safety valve 5 is closed, and the working solenoid valve 6 is opened to introduce high-pressure combustion gas small molecules into the working thruster 7, and the small molecules are discharged through the working thruster 7, thereby generating thrust by working;

[0057] When the high-speed aircraft does not need additional power and the pressure of the heat-to-work conversion tank 4 is greater than 2MPa, the working solenoid valve 6 is closed, the safety valve 5 is opened, and the small molecules of high-pressure fuel gas are discharged through the safety valve 5 until the pressure of the heat-to-work conversion tank 4 is 0.5MPa~1MPa, and then the safety valve 5 is closed.

[0058] The following are specific embodiments

[0059] Example 1

[0060] The sandwich multi-channel reaction system of this embodiment is as follows: Figure 1-4 As shown, Figure 1 is a schematic diagram of a sandwich multi-channel reaction system according to an embodiment of the present invention, Figure 2, Figure 3 The side view and cross-sectional view of the 3D model of the multi-channel reforming reactor are respectively. Figure 4 The schematic diagram of the plate storage tank with a gravity ball is shown in FIG. The system includes: a plate storage tank 1, a multi-channel reforming reactor 2, a locking solenoid valve 3, a heat-to-work conversion tank 4, a safety valve 5, a working solenoid valve 6, and a working thruster 7; an air interlayer 8 is provided between the multi-channel reforming reactor 2 and the plate storage tank 1; a catalyst 9 is filled in the multi-channel reforming reactor 2, and a high-density liquid cooling medium 10 is filled in the plate storage tank 1; the outlet of the plate storage tank 1 is connected to the inlet of the multi-channel reforming reactor 2, The outlet of the multi-channel reforming reactor 2 is connected to the inlet of the heat-to-work conversion tank 4 through a locking solenoid valve 3; the heat-to-work conversion tank 4 is also provided with a first outlet 41 and a second outlet 42, the first outlet 41 is connected to the working thruster 7 through a working solenoid valve 6, and the second outlet 42 is connected to the outside through a safety valve 5; the plate tank 1 and the multi-channel reforming reactor 2 are both flat plate structures; a plurality of thin-walled pressure-bearing channels are arranged inside the multi-channel reforming reactor 2, and reinforcing ribs are arranged in the plate tank 1.

[0061] Wherein, the cross section of the thin-wall pressure-bearing channel is circular or rounded rectangular.

[0062] A gravity ball is arranged in the plate-type storage tank 1. The gravity ball is made of porous metal. The gravity ball is connected to the outlet of the plate-type storage tank 1 through a hose. Under the action of microgravity, the gravity ball can move with the high-density liquid cooling medium (10) and be immersed below the liquid level of the high-density liquid cooling medium (10).

[0063] The thickness of the air interlayer 8 is 2 mm; the wall thickness of the multi-channel reforming reactor is 0.6 mm; and the wall thickness of the plate storage tank 1 is 0.6 mm.

[0064] The catalyst 9 includes a modified alumina carrier and an active component Pt and an auxiliary agent Ce loaded on the modified alumina carrier. The mass contents of the active component Pt and the auxiliary agent Ce in the catalyst 9 are 20% and 5%, respectively.

[0065] The high-density liquid cooling medium 10 is a mixed solution of ethanol and water, and the mass concentration of ethanol is 50%.

[0066] The method for using the sandwich multi-channel reaction system of this embodiment includes the following steps: the high-density liquid cooling medium 10 in the plate storage tank 1 is vaporized by aerodynamic heat heating, and then enters the multi-channel reforming reactor 2 through the outlet of the plate storage tank 1 through a pipeline under pressure to absorb aerodynamic heat through physical phase change latent heat and sensible heat, and then undergoes a chemical endothermic reaction under the action of the catalyst 9 to produce high-pressure gas small molecules, and the high-pressure gas small molecules enter the heat-to-work conversion tank 4 through the locking solenoid valve 3 for storage.

[0067] Furthermore, when the high-speed aircraft needs to adjust its attitude, the safety valve 5 is closed, and the working solenoid valve 6 is opened to introduce high-pressure combustion gas small molecules into the working thruster 7, and then discharged through the working thruster 7, thereby generating thrust by working.

[0068] Furthermore, when the high-speed aircraft does not need additional power and the pressure of the heat-to-work conversion tank 4 is greater than 2MPa, the working solenoid valve 6 is closed, the safety valve 5 is opened, and the small molecules of high-pressure fuel gas are discharged through the safety valve 5 until the pressure of the heat-to-work conversion tank 4 is 0.5-1MPa, and then the safety valve 5 is closed.

[0069] Example 2

[0070] The only difference between this embodiment and embodiment 1 is that the cooling medium is a mixed solution of methanol and water, and the mass concentration of methanol in the mixed solution is 60%.

[0071] Example 3

[0072] The only difference between this embodiment and embodiment 1 is that the cooling medium is a mixed solution of methanol and water, and the mass concentration of methanol in the mixed solution is 80%.

[0073] Test Case

[0074] 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.

[0075] Depend on Figure 5 It 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).

[0076] 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.

[0077] Example 5

[0078] 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.

[0079] Table 1 Surface temperature difference between plate storage tank and multi-channel reforming reactor

[0080] Interlayer thickness (mm) 0 1 2 4 Reforming reactor surface temperature (℃) 600 600 600 600 Tank surface temperature (℃) 362 190 115 108 Temperature difference (℃) 238 380 485 492

[0081] It can be seen from the experimental results that when the reforming reactor and the storage tank are in close contact, the surface temperature of the storage tank (362°C) differs from the surface temperature of the reforming reactor (600°C) by only 238°C, indicating that aerodynamic heat can be quickly conducted through the metal outer wall, thereby increasing the temperature of the storage tank; when the thickness of the air interlayer increases to 2mm, the surface temperature of the storage tank drops to 115°C, and when it is further increased to 4mm, the surface temperature of the storage tank does not drop significantly, only 108°C. This shows that the air interlayer can effectively reduce the increase in the storage tank temperature caused by heat conduction, and a thickness of 2mm is more appropriate.

[0082] 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. A sandwich multi-channel reaction system, characterized in that: The system comprises: a plate-type storage tank (1), a multi-channel reforming reactor (2), a locking electromagnetic valve (3), a heat-power conversion storage tank (4), a safety valve (5), a power electromagnetic valve (6), and a power thruster (7); An air interlayer (8) is provided between the multi-channel reforming reactor (2) and the plate-type storage tank (1); a catalyst (9) is filled in the multi-channel reforming reactor (2), and a high-density liquid cooling medium (10) is filled in the plate-type storage tank (1); The outlet of the plate-type storage tank (1) is connected to the inlet of the multi-channel reforming reactor (2), and the outlet of the multi-channel reforming reactor (2) is connected to the inlet of the heat conversion storage tank (4) through the locking solenoid valve (3); The heat-to-power conversion tank (4) is also provided with a first outlet (41) and a second outlet (42), wherein the first outlet (41) is connected to the power thruster (7) via the power solenoid valve (6), and the second outlet (42) is connected to the outside via the safety valve (5); The plate-type storage box (1) and the multi-channel reforming reactor (2) are both of flat plate structure; a plurality of thin-walled pressure-bearing channels are arranged inside the multi-channel reforming reactor (2), and reinforcing ribs are arranged inside the plate-type storage box (1).

2. The sandwich multi-channel reaction system according to claim 1, characterized in that: The cross section of the thin-wall pressure-bearing channel is circular or rectangular with rounded corners.

3. The sandwich multi-channel reaction system according to claim 1, characterized in that: The plate-type storage box (1) is provided with a hydrophilic material or a gravity ball.

4. The sandwich multi-channel reaction system according to claim 3, characterized in that: The hydrophilic material includes high temperature resistant fiber or water absorbent cloth containing silicon or aluminum.

5. The sandwich multi-channel reaction system according to claim 3, characterized in that: The gravity ball is made of porous metal and is connected to the outlet of the plate-type storage tank (1) via a hose. Under the action of microgravity, the gravity ball can move with the high-density liquid cooling medium (10) and be immersed below the liquid level of the high-density liquid cooling medium (10).

6. The sandwich multi-channel reaction system according to claim 1, characterized in that: The wall thickness of the multi-channel reforming reactor (2) is 0.4 mm to 1 mm; The wall thickness of the plate-type storage box (1) is 0.4 mm to 1 mm; The thickness of the air interlayer (8) is 0.8 mm to 5 mm.

7. The sandwich multi-channel reaction system according to claim 1, characterized in that: The catalyst (9) comprises a modified alumina carrier and an active component and an auxiliary agent supported on the modified alumina carrier; wherein the mass of the active component accounts for 5% to 30% of the total mass of the catalyst, and the mass of the auxiliary agent accounts for 1% to 10% of the total mass of the catalyst; The active component includes at least one of Cu, Ni, Fe, Ru and Pt metals; The auxiliary agent includes Zn and / or Ce.

8. The sandwich multi-channel reaction system according to claim 1, characterized in that: The high-density liquid cooling medium (10) 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. The sandwich multi-channel reaction system according to claim 8, characterized in that: The alcohol components in the alcohol-water mixed solution are 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%.

10. An application of the sandwich multi-channel reaction system according to any one of claims 1 to 9 in a high-speed aircraft, characterized in that: The application comprises the following steps: The high-density liquid cooling medium (10) in the plate-type storage tank (1) is heated and vaporized by aerodynamic heat, and then enters the multi-channel reforming reactor (2) through the outlet of the plate-type storage tank (1) through a pipeline under pressure to absorb aerodynamic heat by physical phase change latent heat and sensible heat, and then undergoes a chemical endothermic reaction under the action of the catalyst (9) to generate high-pressure gas small molecules, and the high-pressure gas small molecules enter the heat-to-work conversion storage tank (4) through the locking solenoid valve (3) for storage; When the high-speed aircraft needs to adjust its attitude, the safety valve (5) is closed, the working solenoid valve (6) is opened, the high-pressure combustion gas small molecules are introduced into the working thruster (7), and discharged through the working thruster (7), thereby generating thrust by working; When the high-speed aircraft does not need additional power and the pressure of the heat-to-work conversion tank (4) is greater than 2 MPa, the working solenoid valve (6) is closed, the safety valve (5) is opened, and the small molecules of the high-pressure fuel gas are discharged through the safety valve (5) until the pressure of the heat-to-work conversion tank (4) is 0.5-1 MPa, and then the safety valve (5) is closed.

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