High-entropy metal oxide photo-thermal chemical cycle direct water decomposition hydrogen production equipment and method

Abstract

A high-entropy metal oxide photo-thermal chemical cycle direct water decomposition hydrogen production device and method comprises a hot air system, a steam system and a reaction system, a high-entropy metal oxide is arranged in the reaction system, the hot air system is used for generating high-temperature pyrolysis gas, and the steam system is used for generating steam; high-temperature pyrolysis gas and steam are respectively and alternately introduced into the two reaction systems for hot air flow and water flow, so that the two reaction systems can share the same hot air system and steam system, and meanwhile, the hot air system and the steam system can continuously perform production without shutdown; excessive high-temperature pyrolysis gas which is not reacted completely in the reaction system enters the steam preheater to exchange heat with steam, so that the steam is heated to form superheated steam. The hot air flow and the water flow can be alternately carried out through the two reaction systems, the production efficiency of the hydrogen production equipment is effectively improved, and the energy consumption of the hydrogen production equipment can be effectively reduced through heat exchange between high-temperature pyrolysis gas and steam.

Description

Technical Field

[0001] The present invention relates to a hydrogen production device, and in particular to a high entropy metal oxide photothermal chemical cycle direct water decomposition hydrogen production device and a use method thereof. Background Art

[0003] Currently, the most widely used hydrogen production process is water electrolysis. This process has high energy consumption and large greenhouse gas emissions. In recent years, the industry has gradually promoted the high-entropy metal oxide photothermal chemical cycle direct water decomposition hydrogen production process, which is a hydrogen production process that directly utilizes the heat of a high-temperature reactor and does not require a power generation step. The process includes two steps: a water process in which high-entropy metals are oxidized with superheated water vapor to simultaneously produce hydrogen and high-entropy metal oxides, and a hot air process in which high-entropy metal oxides are reduced by high-temperature reducing gases.

[0004] Although this hydrogen production process only requires the input of heat and water to continuously regenerate hydrogen and oxygen, has almost no impact on the environment and has the potential for sustainable development, it still has the following defects:

[0005] 1. High entropy metal oxides need to undergo repeated oxidation and reduction reactions, which last for a long time. As a result, the production equipment of superheated steam and high-temperature reducing gas needs to be repeatedly turned on and off, resulting in low production efficiency.

[0006] 2. Since metal oxygen bonds are difficult to break and require high-temperature drive, both the water process and the hot air process need to be carried out at a high temperature of about 800°C, resulting in high energy consumption.

[0007] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the application, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to ordinary technicians in this field. Summary of the invention

[0008] The purpose of the present invention is to overcome the shortcomings of low production efficiency and high energy consumption in the prior art, and to provide a high-entropy metal oxide photothermal chemical cycle direct water decomposition hydrogen production equipment with high production efficiency and low energy consumption and a method for using the same.

[0009] To achieve the above objectives, the technical solution of the present invention is:

[0010] A high entropy metal oxide photothermal chemical cycle direct water decomposition hydrogen production equipment, the hydrogen production equipment comprising: a hot air system, a steam system and a reaction system;

[0011] The reaction system comprises a first reaction system and a second reaction system,

[0012] The first reaction system and the second reaction system have the same structure, and high entropy metal oxide is arranged in both the first reaction system and the second reaction system;

[0013] The hot air system is used to generate high-temperature pyrolysis gas, and the high-temperature pyrolysis gas is introduced into the reaction system to undergo a hot air process, wherein the high-temperature pyrolysis gas undergoes a reduction reaction with a high-entropy metal oxide to produce a high-entropy metal;

[0014] The steam system is used to generate superheated water steam, and the superheated water steam is introduced into the reaction system to perform a water process, wherein the water process is that the superheated water steam and the high entropy metal undergo an oxidation reaction to generate hydrogen and a high entropy metal oxide;

[0015] The products of the hot air system and the steam system are alternately introduced into the first reaction system and the second reaction system in turn to perform the hot air process and the water process respectively.

[0016] The first reaction system includes a reactor and a condenser, wherein the reactor is used to alternately perform a hot air process and a water process inside the reactor;

[0017] The reaction system also includes a hot air flow controller and a water flow controller. The condenser is used to separate the hydrogen and excess superheated water vapor generated in the water flow. The hot air flow controller is used to control the high-temperature pyrolysis gas to enter the first reaction system or the second reaction system. The water flow controller is used to control the superheated water vapor to enter the first reaction system or the second reaction system.

[0018] The reactor is provided with a high-temperature pyrolysis gas inlet, a high-temperature flue gas outlet, a hydrogen outlet and a high-temperature steam inlet;

[0019] The hot air flow controller is provided with a hot air inlet and two hot air outlets;

[0020] The water flow controller is provided with two steam outlets and a steam inlet;

[0021] The hot air inlet of the hot air process controller is connected to the air outlet of the hot air system, and the two hot air outlets of the hot air process controller are respectively connected to the high-temperature pyrolysis gas inlets of the first reaction system and the second reaction system;

[0022] The two steam outlets of the water flow controller are respectively connected to the high-temperature steam inlets of the first reaction system and the second reaction system, and the steam inlet of the water flow controller is connected to the steam outlet of the steam system;

[0023] A high-temperature valve is respectively provided on the two hot air outlets of the hot air flow controller, and the high-temperature valve is used to control the opening and closing of the corresponding hot air outlet;

[0024] A high-temperature valve is respectively provided in the two steam outlets of the water flow controller, and the high-temperature valve is used to control the opening and closing of the corresponding steam outlet;

[0025] The hydrogen outlet of the reactor is connected to the air inlet of the condenser, and the air outlet of the condenser is connected to the hydrogen collection system through a water sealing device.

[0026] A high-temperature stop valve is provided in the high-temperature flue gas outlet;

[0027] The steam system includes a steam generating system and a steam preheater. The air outlet of the steam generating system is connected with the low-temperature steam inlet of the steam preheater. The high-temperature steam outlet of the steam preheater is the air outlet of the steam system. The high-temperature flue gas inlet of the steam preheater is connected with two high-temperature flue gas outlets respectively through two high-temperature stop valves. The exhaust gas outlet of the steam preheater is extracted by a flue gas induced draft fan and discharged through a chimney.

[0028] The steam generating system comprises a water softener, a soft water barrel, a water feed pump and a steam generator. The water outlet of the water softener is connected to the water inlet of the soft water barrel, the water outlet of the soft water barrel is connected to the water inlet of the water feed pump, the water outlet of the water feed pump is connected to the water inlet of the steam generator, and the air outlet of the steam generator is the air outlet of the steam generating system.

[0029] The hot air system comprises a burner, a hot air stove and a mixing fan, the combustion chamber of the burner is connected to the inner chamber of the hot air stove, the air outlet of the hot air stove is the air outlet of the hot air system, and the air inlet of the hot air stove is connected to the air outlet of the mixing fan;

[0030] The hot blast furnace is provided with a hot blast temperature control system, and the hot blast temperature control system is used to monitor the temperature of the gas in the hot blast furnace and control the operation of the mixing blower according to the temperature.

[0031] The condenser comprises a short cylinder section, two elliptical heads, two tube sheets and a plurality of heat exchange tubes. The short cylinder section is a horizontally arranged cylindrical structure. Two tube sheets are respectively sealed at both ends of the short cylinder section. An elliptical head is respectively sealed on the outer sides of the two tube sheets. Both ends of the plurality of heat exchange tubes are respectively passed through the two tube sheets and then sealedly connected with the corresponding tube sheets. The short cylinder section, the two tube sheets and the plurality of heat exchange tubes form a sealed heat exchange cavity.

[0032] The two elliptical heads are respectively provided with a circulating water inlet and a circulating water outlet, the two ends of the top of the short cylinder section are respectively provided with an air inlet and an air outlet of the condenser, and the bottom of the short cylinder section is provided with a condensed water outlet;

[0033] The diameter of the air inlet of the condenser is larger than the diameter of the air outlet.

[0034] A method for using a high entropy metal oxide photothermal chemical cycle direct water decomposition hydrogen production device, the method comprising the following steps:

[0035] Start the hot air system and steam system to circulate hydrogen production:

[0036] S1. First, the hot air system is disconnected from the second reaction system, and nitrogen is charged into the reactor of the second reaction system to replace the pyrolysis gas inside; the steam system is disconnected from the first reaction system, and coal gas is charged into the reactor of the first reaction system to replace the steam inside; then, the hot air system is connected to the first reaction system, and the steam system is connected to the second reaction system.

[0037] S2, the hot air system generates high-temperature pyrolysis gas, which is introduced into the first reaction system, and the steam system generates superheated water steam, which is introduced into the second reaction system;

[0038] S3, after the high-temperature pyrolysis gas is introduced into the first reaction system, it undergoes a reduction reaction with the high-entropy metal oxide in the reactor and is converted into a metallic state, and at the same time, after the superheated water vapor is introduced into the second reaction system, it undergoes an oxidation reaction with the high-entropy metal in the reactor to produce high-entropy metal oxide and hydrogen;

[0039] When the high-temperature pyrolysis gas is continuously introduced for one hour, it enters S4;

[0040] S4. When the high-temperature pyrolysis gas is continuously introduced for one hour, the hot air system is disconnected from the first reaction system, and nitrogen is introduced into the reactor of the first reaction system to replace the pyrolysis gas inside it; the steam system is disconnected from the second reaction system, and coal gas is introduced into the reactor of the second reaction system to replace the steam inside it; then, the hot air system is connected to the second reaction system, and the steam system is connected to the first reaction system. At this time, the high-temperature pyrolysis gas is introduced into the second reaction system, and at the same time, superheated water steam is introduced into the first reaction system. After the reduction reaction and oxidation reaction are respectively carried out for one hour, the reaction returns to S1.

[0041] S1 includes starting the hot air system and the steam system. At this time, the high-temperature valve corresponding to the first reaction system in the hot air process controller is opened, and the high-temperature valve corresponding to the second reaction system is closed. At the same time, the high-temperature valve corresponding to the second reaction system in the water process controller is opened, and the high-temperature valve corresponding to the first reaction system is closed, and then S2 is entered;

[0042] The S2 includes that the pyrolysis gas is introduced into the burner for incomplete combustion, the combustion products and the excess pyrolysis gas are mixed with the air input by the mixing fan in the hot blast furnace to produce high-temperature pyrolysis gas of 800 to 1000° C., and the high-temperature pyrolysis gas enters the hot blast flow controller through the hot blast inlet and enters the reactor in the first reaction system through the hot blast outlet;

[0043] At the same time, the water pump extracts the soft water in the soft water bucket and delivers the soft water to the steam generator. The steam generator heats the soft water to form steam. The steam enters the water flow controller through the steam inlet and enters the inner cavity of the steam preheater through the steam outlet, and then enters S3;

[0044] The S3 includes that the high-temperature pyrolysis gas is introduced into the reactor of the first reaction system through the high-temperature pyrolysis gas inlet, and undergoes a reduction reaction with the high-entropy metal oxide in the reactor, at which time the high-entropy metal oxide is reduced by the reducing gas in the pyrolysis gas and converted into a metallic state, and at the same time, excess high-temperature pyrolysis gas enters the high-temperature flue gas inlet of the steam preheater through the high-temperature flue gas outlet, and the high-temperature pyrolysis gas in the steam preheater undergoes heat exchange with the steam, at which time the steam is heated to form superheated water steam, and the high-temperature pyrolysis gas after the heat exchange is extracted from the exhaust outlet by the flue gas induced draft fan and discharged through the chimney;

[0045] At the same time, the superheated water vapor enters the high-temperature steam inlet of the second reaction system through the steam outlet corresponding to the second reaction system in the water flow controller, and undergoes an oxidation reaction with the high-entropy metal in the metallic state in the second reaction system. At this time, the high-entropy metal captures the oxygen in the superheated water vapor and converts it into a high-entropy metal oxide, and at the same time, hydrogen is generated. The generated hydrogen enters the condenser through the hydrogen outlet for condensation. At this time, the excess steam mixed in the hydrogen is condensed and discharged from the condensed water outlet. The condensed hydrogen passes through the water seal device and enters the hydrogen collection system for collection.

[0046] When the high-temperature pyrolysis gas is continuously introduced for one hour, it enters S4;

[0047] The S4 includes that after the high-temperature pyrolysis gas is continuously introduced for one hour, each high-temperature valve in the hot air process controller and the water process controller are switched to an open state, and the high-temperature pyrolysis gas is introduced into the reactor of the second reaction system, and superheated water steam is introduced into the reactor of the first reaction system, and the reduction reaction or oxidation reaction is repeated.

[0048] Compared with the prior art, the present invention has the following beneficial effects:

[0049] 1. A high-entropy metal oxide photothermal chemical cycle direct water decomposition hydrogen production equipment of the present invention includes a hot air system, a steam system and two reaction systems. The reaction system is provided with a high-entropy metal oxide, the hot air system is used to generate high-temperature pyrolysis gas, and the steam system is used to generate steam. The high-temperature pyrolysis gas and steam are alternately introduced into the two reaction systems for hot air flow and water flow, respectively, so that the two reaction systems can share the same hot air system and steam system, and the hot air system and steam system can continue to produce without stopping, so that the production efficiency is doubled. Therefore, this design can effectively improve the production efficiency of the hydrogen production equipment by alternating hot air flow and water flow through two reaction systems.

[0050] 2. In the high-entropy metal oxide photothermal chemical cycle direct water decomposition hydrogen production equipment of the present invention, the high-temperature pyrolysis gas generated by the hot air system is introduced into the reaction system to react with the high-entropy metal oxide to produce high-entropy metal, and the excess high-temperature pyrolysis gas enters the steam preheater and exchanges heat with the steam to heat the steam to form superheated steam. While recycling the high-temperature pyrolysis gas preheating, the energy required for steam heating is reduced. Therefore, this design can effectively reduce the energy consumption of the hydrogen production equipment by exchanging heat between the high-temperature pyrolysis gas and the steam.

[0051] 3. In the method for using a high-entropy metal oxide photothermal chemical cycle direct water decomposition hydrogen production device of the present invention, the temperature of the high-temperature pyrolysis gas is controlled by a hot air temperature control system and a mixing fan, and the material flow and energy flow direction of the high-temperature pyrolysis gas and steam are controlled by a hot air process controller and a high-temperature valve in a water process controller, thereby forming a stable operation control strategy for the hydrogen production device. Therefore, this design can effectively improve the operating stability of the hydrogen production device by controlling the temperature of the high-temperature pyrolysis gas, and the material flow and energy flow direction of the high-temperature pyrolysis gas and steam. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a structural schematic diagram of the hydrogen production equipment of the present invention.

[0053] Figure 2 It is a top view of the hydrogen production equipment of the present invention.

[0054] Figure 3 yes Figure 1 Schematic diagram of the structure of the condenser.

[0055] In the figure: hot air system 1, burner 11, hot air furnace 12, mixing fan 13, steam system 2, steam generation system 21, steam preheater 22, low-temperature steam inlet 221, high-temperature steam outlet 222, high-temperature flue gas inlet 223, tail gas outlet 224, high-temperature stop valve 23, water softener 24, soft water barrel 25, water feed pump 26, steam generator 27, flue gas induced draft fan 28, chimney 29, reaction system 3, first reaction system 31, second reaction system 32, reactor 4, high-temperature pyrolysis gas inlet 41, high-temperature flue gas outlet 42, hydrogen outlet 43, high-temperature steam inlet 44, condenser 5, short cylinder section 51, elliptical head 52, tube sheet 53, heat exchange tube 54, circulating water inlet 55, circulating water outlet 56, condensed water outlet 57, hot air process controller 6, hot air inlet 61, hot air outlet 62, water process controller 7, steam outlet 71, steam inlet 72, water seal device 8. DETAILED DESCRIPTION

[0056] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0057] The principle of the present invention is described as follows:

[0058] In this design, the fuel of the hot blast furnace 12 is pyrolysis gas, the pyrolysis gas pressure is 3000Pa, the main components are carbon monoxide, hydrogen, methane and carbon dioxide, and the calorific value is 3000 to 4000 kcal / cubic;

[0059] The hot air process of the present design includes: the pyrolysis gas is burned in the hot air furnace 12 to produce high-temperature pyrolysis gas, and the high-temperature pyrolysis gas is mixed with the air input by the mixing fan 13 to form a hot air of 800 to 1000°C to provide a high-temperature heat source for the reaction system 3. The high-temperature pyrolysis gas generated by the hot air system 1 enters from the upper part of the reactor 4, heats the reactor 4 to 800°C, and then reacts with the high-entropy metal oxide in the reactor 4 to produce high-entropy metal. After the unreacted high-temperature pyrolysis gas is discharged from the lower part of the reactor 4, it enters from the lower part of the steam preheater 22, heats the water vapor to 650°C, and then is discharged from the upper part of the steam preheater 22, and is extracted and discharged through the flue gas induced draft fan 28;

[0060] The water flow process of this design includes: after the raw water is softened by resin in the water softener 24, it is stored in the soft water barrel 25. When in use, it is pumped by the water supply pump 26 and enters the steam generator 27 to generate steam. After the steam is reduced in pressure, it enters the pipe process from the lower part of the steam preheater 22, is heated to 650°C by the high-temperature pyrolysis gas, and then is discharged from the upper part of the steam preheater 22 and enters from the lower part of the reactor 4. The water vapor is further heated to 800°C by the flue gas leaving the reaction section and reacts with the high entropy metal to produce high entropy metal oxides and hydrogen. The unreacted water vapor and hydrogen leave the reactor 4 and enter the condenser 5, where the water vapor is condensed into water and discharged. The hydrogen leaves the condenser 5 and enters the hydrogen collection system.

[0061] Embodiment 1:

[0062] See also Figure 1 and Figure 2 , a high entropy metal oxide photothermal chemical cycle direct water decomposition hydrogen production equipment, the hydrogen production equipment comprises: a hot air system 1, a steam system 2 and a reaction system 3;

[0063] The reaction system 3 includes a first reaction system 31 and a second reaction system 32.

[0064] The first reaction system 31 and the second reaction system 32 have the same structure, and high entropy metal oxides are disposed in both the first reaction system 31 and the second reaction system 32;

[0065] The hot air system 1 is used to generate high-temperature pyrolysis gas, and the high-temperature pyrolysis gas is introduced into the reaction system 3 to perform a hot air process, in which the high-temperature pyrolysis gas and the high-entropy metal oxide undergo a reduction reaction to produce a high-entropy metal;

[0066] The steam system 2 is used to generate superheated water steam, and the superheated water steam is passed into the reaction system 3 to perform a water process, wherein the superheated water steam and the high entropy metal undergo an oxidation reaction to generate hydrogen and a high entropy metal oxide;

[0067] The products of the hot air system 1 and the steam system 2 are alternately introduced into the first reaction system 31 and the second reaction system 32 to perform the hot air process and the water process respectively.

[0068] The first reaction system 31 includes a reactor 4 and a condenser 5, wherein the reactor 4 is used to alternately perform a hot air process and a water process therein;

[0069] The reaction system 3 also includes a hot air flow controller 6 and a water flow controller 7. The condenser 5 is used to separate the hydrogen and excess superheated water vapor generated in the water flow. The hot air flow controller 6 is used to control the high-temperature pyrolysis gas to enter the first reaction system 31 or the second reaction system 32. The water flow controller 7 is used to control the superheated water vapor to enter the first reaction system 31 or the second reaction system 32.

[0070] The reactor 4 is provided with a high-temperature pyrolysis gas inlet 41, a high-temperature flue gas outlet 42, a hydrogen outlet 43 and a high-temperature steam inlet 44;

[0071] The hot air flow controller 6 is provided with a hot air inlet 61 and two hot air outlets 62;

[0072] The water flow controller 7 is provided with two steam outlets 71 and a steam inlet 72;

[0073] The hot air inlet 61 of the hot air process controller 6 is connected to the air outlet of the hot air system 1, and the two hot air outlets 62 of the hot air process controller 6 are respectively connected to the high-temperature pyrolysis gas inlets 41 of the first reaction system 31 and the second reaction system 32;

[0074] The two steam outlets 71 of the water flow controller 7 are respectively connected to the high-temperature steam inlets 44 of the first reaction system 31 and the second reaction system 32, and the steam inlet 72 of the water flow controller 7 is connected to the gas outlet of the steam system 2;

[0075] The two hot air outlets 62 of the hot air flow controller 6 are respectively provided with a high temperature valve, and the high temperature valve is used to control the opening and closing of the corresponding hot air outlet 62;

[0076] A high-temperature valve is respectively disposed in the two steam outlets 71 of the water flow controller 7, and the high-temperature valve is used to control the opening and closing of the corresponding steam outlet 71;

[0077] The hydrogen outlet 43 of the reactor 4 is connected to the air inlet of the condenser 5, and the air outlet of the condenser 5 is connected to the hydrogen collection system after passing through the water sealing device 8.

[0078] A high-temperature stop valve 23 is provided in the high-temperature flue gas outlet 42;

[0079] The steam system 2 includes a steam generating system 21 and a steam preheater 22. The air outlet of the steam generating system 21 is connected to the low-temperature steam inlet 221 of the steam preheater 22. The high-temperature steam outlet 222 of the steam preheater 22 is the air outlet of the steam system 2. The high-temperature flue gas inlet 223 of the steam preheater 22 is respectively connected to two high-temperature flue gas outlets 42 through two high-temperature stop valves 23. The exhaust gas outlet 224 of the steam preheater 22 is extracted by the flue gas induced draft fan 28 and discharged through the chimney 29.

[0080] The steam generating system 21 includes a water softener 24, a soft water barrel 25, a water supply pump 26 and a steam generator 27. The water outlet of the water softener 24 is connected to the water inlet of the soft water barrel 25, the water outlet of the soft water barrel 25 is connected to the water inlet of the water supply pump 26, the water outlet of the water supply pump 26 is connected to the water inlet of the steam generator 27, and the air outlet of the steam generator 27 is the air outlet of the steam generating system 21.

[0081] The hot air system 1 comprises a burner 11, a hot air stove 12 and a mixing fan 13. The combustion chamber of the burner 11 is connected to the inner chamber of the hot air stove 12. The air outlet of the hot air stove 12 is the air outlet of the hot air system 1. The air inlet of the hot air stove 12 is connected to the air outlet of the mixing fan 13.

[0082] The hot air furnace 12 is provided with a hot air temperature control system, and the hot air temperature control system is used to monitor the temperature of the gas in the hot air furnace 12 and control the operation of the mixing fan 13 according to the temperature.

[0083] See also Figure 3 The condenser 5 comprises a short cylinder section 51, two elliptical heads 52, two tube sheets 53 and a plurality of heat exchange tubes 54. The short cylinder section 51 is a horizontally arranged cylindrical structure. Two tube sheets 53 are respectively sealed at both ends of the short cylinder section 51. An elliptical head 52 is respectively sealed on the outer sides of the two tube sheets 53. Both ends of the plurality of heat exchange tubes 54 pass through the two tube sheets 53 and are sealed and connected with the corresponding tube sheets 53. The short cylinder section 51, the two tube sheets 53 and the plurality of heat exchange tubes 54 form a sealed heat exchange cavity.

[0084] The two elliptical heads 52 are respectively provided with a circulating water inlet 55 and a circulating water outlet 56, the two ends of the top of the short cylinder section 51 are respectively provided with an air inlet and an air outlet of the condenser 5, and the bottom of the short cylinder section 51 is provided with a condensed water outlet 57;

[0085] The diameter of the air inlet of the condenser 5 is larger than the diameter of the air outlet.

[0086] Embodiment 2:

[0087] A method for using a high entropy metal oxide photothermal chemical cycle direct water decomposition hydrogen production device. The method comprises the following steps:

[0088] Start hot air system 1 and steam system 2 to circulate hydrogen production:

[0089] S1. First, the hot air system 1 is disconnected from the second reaction system 32, and nitrogen is charged into the reactor 4 of the second reaction system 32 through the high-temperature pyrolysis gas inlet 41 and the hydrogen outlet 43 to replace the pyrolysis gas inside; the steam system 2 is disconnected from the first reaction system 31, and coal gas is charged into the reactor 4 of the first reaction system 31 through the high-temperature steam inlet 44 to replace the steam inside; then, the hot air system 1 is connected to the first reaction system 31, and the steam system 2 is connected to the second reaction system 32,

[0090] S2, the hot air system 1 generates high-temperature pyrolysis gas, which is introduced into the first reaction system 31, and the steam system 2 generates superheated water steam, which is introduced into the second reaction system 32;

[0091] S3, after the high-temperature pyrolysis gas is introduced into the first reaction system 31, it undergoes a reduction reaction with the high-entropy metal oxide in the reactor 4 and is converted into a metallic state, and at the same time, after the superheated water vapor is introduced into the second reaction system 32, it undergoes an oxidation reaction with the high-entropy metal in the reactor 4 to produce high-entropy metal oxide and hydrogen;

[0092] When the high-temperature pyrolysis gas is continuously introduced for one hour, it enters S4;

[0093] S4. When the high-temperature pyrolysis gas is continuously introduced for one hour, the hot air system 1 is disconnected from the first reaction system 31, and nitrogen is introduced into the reactor 4 of the first reaction system 31 to replace the pyrolysis gas therein; the steam system 2 is disconnected from the second reaction system 32, and coal gas is introduced into the reactor 4 of the second reaction system 32 to replace the steam therein; then, the hot air system 1 is connected to the second reaction system 32, and the steam system 2 is connected to the first reaction system 31. At this time, the high-temperature pyrolysis gas is introduced into the second reaction system 32, and the superheated water steam is introduced into the first reaction system 31. After the reduction reaction and the oxidation reaction are respectively carried out for one hour, the reaction returns to S1.

[0094] Embodiment 3:

[0095] The step S1 includes starting the hot air system 1 and the steam system 2. At this time, the high temperature valve corresponding to the first reaction system 31 in the hot air process controller 6 is opened, and the high temperature valve corresponding to the second reaction system 32 is closed. At the same time, the high temperature valve corresponding to the second reaction system 32 in the water process controller 7 is opened, and the high temperature valve corresponding to the first reaction system 31 is closed. At this time, the process enters S2.

[0096] The S2 includes the incomplete combustion of the pyrolysis gas after it is introduced into the burner 11, and the combustion products and excess pyrolysis gas are mixed with the air input by the mixing fan 13 in the hot blast furnace 12 to produce high-temperature pyrolysis gas of 800 to 1000° C. The high-temperature pyrolysis gas enters the hot blast process controller 6 through the hot blast inlet 61, and enters the reactor 4 in the first reaction system 31 through the hot blast outlet 62;

[0097] At the same time, the water supply pump 26 extracts the soft water in the soft water bucket 25 and delivers the soft water to the steam generator 27. The steam generator 27 heats the soft water to form steam. The steam enters the water flow controller 7 through the steam inlet 72 and enters the inner cavity of the steam preheater 22 through the steam outlet 71, and then enters S3.

[0098] The S3 includes high-temperature pyrolysis gas passing through the high-temperature pyrolysis gas inlet 41 into the reactor 4 of the first reaction system 31, and undergoing a reduction reaction with the high-entropy metal oxide in the reactor 4, at which time the high-entropy metal oxide is reduced by the reducing gas in the pyrolysis gas and converted into a metallic state, and at the same time, excess high-temperature pyrolysis gas enters the high-temperature flue gas inlet 223 of the steam preheater 22 through the high-temperature flue gas outlet 42, and the high-temperature pyrolysis gas in the steam preheater 22 undergoes heat exchange with the steam, at which time the steam is heated to form superheated water steam, and the high-temperature pyrolysis gas after the heat exchange is extracted from the exhaust gas outlet 224 by the flue gas induced draft fan 28 and discharged through the chimney 29;

[0099] At the same time, the superheated water vapor enters the high-temperature steam inlet 44 of the second reaction system 32 through the steam outlet 71 corresponding to the second reaction system 32 in the water flow controller 7, and undergoes an oxidation reaction with the high-entropy metal in the metallic state in the second reaction system 32. At this time, the high-entropy metal captures the oxygen in the superheated water vapor and converts it into a high-entropy metal oxide, and at the same time, hydrogen is generated. The generated hydrogen enters the condenser 5 through the hydrogen outlet 43 for condensation. At this time, the excess steam mixed in the hydrogen is condensed and discharged from the condensed water outlet 57. The condensed hydrogen passes through the water seal device 8 and enters the hydrogen collection system for collection;

[0100] When the high-temperature pyrolysis gas is continuously introduced for one hour, it enters S4;

[0101] The S4 includes that after the high-temperature pyrolysis gas is continuously introduced for one hour, each high-temperature valve in the hot air process controller 6 and the water process controller 7 is switched to an open state, and the high-temperature pyrolysis gas is introduced into the reactor 4 of the second reaction system 32, and at the same time, superheated water steam is introduced into the reactor 4 of the first reaction system 31, and the reduction reaction or oxidation reaction is repeated.

[0102] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed by the present invention should be included in the protection scope recorded in the claims.

Claims

1. A high entropy metal oxide photothermal chemical cycle direct water decomposition hydrogen production equipment, characterized in that: The hydrogen production equipment comprises: a hot air system (1), a steam system (2) and a reaction system (3); The reaction system (3) comprises a first reaction system (31) and a second reaction system (32), The first reaction system (31) and the second reaction system (32) have the same structure, and a high entropy metal oxide is disposed in both the first reaction system (31) and the second reaction system (32); The hot air system (1) is used to generate high-temperature pyrolysis gas, and the high-temperature pyrolysis gas is introduced into the reaction system (3) to perform a hot air process, wherein the high-temperature pyrolysis gas and the high-entropy metal oxide undergo a reduction reaction to produce a high-entropy metal; The steam system (2) is used to generate superheated water steam, and the superheated water steam is passed into the reaction system (3) to perform a water process, wherein the superheated water steam and the high entropy metal undergo an oxidation reaction to generate hydrogen and a high entropy metal oxide; The products of the hot air system (1) and the steam system (2) are alternately introduced into the first reaction system (31) and the second reaction system (32) to respectively perform the hot air process and the water process.

2. According to claim 1, a high entropy metal oxide photothermal chemical cycle direct water decomposition hydrogen production equipment is characterized in that: The first reaction system (31) comprises a reactor (4) and a condenser (5), wherein the reactor (4) is used to alternately perform a hot air process and a water process inside the reactor; The reaction system (3) further comprises a hot air flow controller (6) and a water flow controller (7); the condenser (5) is used to separate the hydrogen generated in the water flow and the excess superheated water vapor; the hot air flow controller (6) is used to control the high-temperature pyrolysis gas to enter the first reaction system (31) or the second reaction system (32); and the water flow controller (7) is used to control the superheated water vapor to enter the first reaction system (31) or the second reaction system (32).

3. A high entropy metal oxide photothermal chemical cycle direct water decomposition hydrogen production device according to claim 2, characterized in that: The reactor (4) is provided with a high-temperature pyrolysis gas inlet (41), a high-temperature flue gas outlet (42), a hydrogen outlet (43) and a high-temperature steam inlet (44); The hot air flow controller (6) is provided with a hot air inlet (61) and two hot air outlets (62); The water flow controller (7) is provided with two steam outlets (71) and a steam inlet (72); The hot air inlet (61) of the hot air process controller (6) is connected to the air outlet of the hot air system (1), and the two hot air outlets (62) of the hot air process controller (6) are respectively connected to the high-temperature pyrolysis gas inlets (41) of the first reaction system (31) and the second reaction system (32); The two steam outlets (71) of the water flow controller (7) are respectively connected to the high-temperature steam inlets (44) of the first reaction system (31) and the second reaction system (32), and the steam inlet (72) of the water flow controller (7) is connected to the gas outlet of the steam system (2); The two hot air outlets (62) of the hot air flow controller (6) are respectively provided with a high-temperature valve, and the high-temperature valve is used to control the opening and closing of the corresponding hot air outlet (62); A high-temperature valve is respectively disposed in the two steam outlets (71) of the water flow controller (7), and the high-temperature valve is used to control the opening and closing of the corresponding steam outlet (71); The hydrogen outlet (43) of the reactor (4) is connected to the air inlet of the condenser (5), and the air outlet of the condenser (5) is connected to the hydrogen collection system after passing through the water sealing device (8).

4. A high entropy metal oxide photothermal chemical cycle direct water decomposition hydrogen production device according to claim 3, characterized in that: A high-temperature stop valve (23) is provided in the high-temperature flue gas outlet (42); The steam system (2) comprises a steam generating system (21) and a steam preheater (22); the gas outlet of the steam generating system (21) is connected to the low-temperature steam inlet (221) of the steam preheater (22); the high-temperature steam outlet (222) of the steam preheater (22) is the gas outlet of the steam system (2); the high-temperature flue gas inlet (223) of the steam preheater (22) is respectively connected to two high-temperature flue gas outlets (42) via two high-temperature stop valves (23); the tail gas outlet (224) of the steam preheater (22) is extracted by a flue gas induced draft fan (28) and then discharged through a chimney (29).

5. The high entropy metal oxide photothermal chemical cycle direct water decomposition hydrogen production equipment according to claim 4, characterized in that: The steam generating system (21) comprises a water softener (24), a soft water barrel (25), a water supply pump (26) and a steam generator (27); the water outlet of the water softener (24) is connected to the water inlet of the soft water barrel (25); the water outlet of the soft water barrel (25) is connected to the water inlet of the water supply pump (26); the water outlet of the water supply pump (26) is connected to the water inlet of the steam generator (27); and the air outlet of the steam generator (27) is the air outlet of the steam generating system (21).

6. A high entropy metal oxide photothermal chemical cycle direct water decomposition hydrogen production device according to any one of claims 1 to 5, characterized in that: The hot air system (1) comprises a burner (11), a hot air stove (12) and a mixing fan (13); the combustion chamber of the burner (11) is connected to the inner chamber of the hot air stove (12); the air outlet of the hot air stove (12) is the air outlet of the hot air system (1); and the air inlet of the hot air stove (12) is connected to the air outlet of the mixing fan (13); The hot air furnace (12) is provided with a hot air temperature control system, and the hot air temperature control system is used to monitor the temperature of the gas in the hot air furnace (12) and control the operation of the mixing fan (13) according to the temperature.

7. The high entropy metal oxide photothermal chemical cycle direct water decomposition hydrogen production equipment according to claim 2, characterized in that: The condenser (5) comprises a short cylinder section (51), two elliptical heads (52), two tube sheets (53) and a plurality of heat exchange tubes (54). The short cylinder section (51) is a horizontally arranged cylindrical structure. Two tube sheets (53) are respectively sealed at both ends of the short cylinder section (51). An elliptical head (52) is respectively sealed on the outer sides of the two tube sheets (53). Both ends of the plurality of heat exchange tubes (54) pass through the two tube sheets (53) and are sealedly connected to the corresponding tube sheets (53). The short cylinder section (51), the two tube sheets (53) and the plurality of heat exchange tubes (54) form a sealed heat exchange cavity. The two elliptical heads (52) are respectively provided with a circulating water inlet (55) and a circulating water outlet (56); the two ends of the top of the short cylinder section (51) are respectively provided with an air inlet and an air outlet of the condenser (5); and the bottom of the short cylinder section (51) is provided with a condensed water outlet (57); The diameter of the air inlet of the condenser (5) is larger than the diameter of the air outlet.

8. A method for using a high entropy metal oxide photothermal chemical cycle direct water decomposition hydrogen production device, characterized in that: The method of use is based on the high entropy metal oxide photothermal chemical cycle direct water decomposition hydrogen production equipment according to claims 1-7, and the method comprises the following steps: Start the hot air system (1) and the steam system (2) to produce hydrogen in a cycle: S1. First, the hot air system (1) is disconnected from the second reaction system (32), and nitrogen is introduced into the reactor (4) of the second reaction system (32) to replace the pyrolysis gas therein; the steam system (2) is disconnected from the first reaction system (31), and coal gas is introduced into the reactor (4) of the first reaction system (31) to replace the steam therein; then, the hot air system (1) is connected to the first reaction system (31), and the steam system (2) is connected to the second reaction system (32). S2, the hot air system (1) generates high-temperature pyrolysis gas, which is introduced into the first reaction system (31), and at the same time, the steam system (2) generates superheated water steam, which is introduced into the second reaction system (32); S3, after the high-temperature pyrolysis gas is introduced into the first reaction system (31), it undergoes a reduction reaction with the high-entropy metal oxide in the reactor (4) to be converted into a metallic state, and at the same time, after the superheated water vapor is introduced into the second reaction system (32), it undergoes an oxidation reaction with the high-entropy metal in the reactor (4) to produce high-entropy metal oxide and hydrogen; When the high-temperature pyrolysis gas is continuously introduced for one hour, it enters S4; S4. When the high-temperature pyrolysis gas continues to be introduced for one hour, the hot air system (1) is disconnected from the first reaction system (31), and nitrogen is introduced into the reactor (4) of the first reaction system (31) to replace the pyrolysis gas therein; the steam system (2) is disconnected from the second reaction system (32), and coal gas is introduced into the reactor (4) of the second reaction system (32) to replace the steam therein; then, the hot air system (1) is connected to the second reaction system (32), and the steam system (2) is connected to the first reaction system (31), at which time the high-temperature pyrolysis gas is introduced into the second reaction system (32), and at the same time, superheated water steam is introduced into the first reaction system (31), and reduction reaction and oxidation reaction are respectively carried out for one hour, and then the process returns to S1.

9. The method for using a high entropy metal oxide photothermal chemical cycle direct water decomposition hydrogen production device according to claim 8, characterized in that: The step S1 includes starting the hot air system (1) and the steam system (2). At this time, the high temperature valve corresponding to the first reaction system (31) in the hot air flow controller (6) is opened, and the high temperature valve corresponding to the second reaction system (32) is closed. At the same time, the high temperature valve corresponding to the second reaction system (32) in the water flow controller (7) is opened, and the high temperature valve corresponding to the first reaction system (31) is closed. At this time, the process enters S2. The S2 includes the process of incomplete combustion of pyrolysis gas after it is introduced into a burner (11), the combustion products and excess pyrolysis gas are mixed with air inputted by a mixing fan (13) in a hot blast furnace (12) to generate high-temperature pyrolysis gas of (800) to (1000)°C, the high-temperature pyrolysis gas enters a hot blast flow controller (6) through a hot blast inlet (61), and enters a reactor (4) in a first reaction system (31) through a hot blast outlet (62); At the same time, the water supply pump (26) extracts the soft water in the soft water bucket (25) and delivers the soft water to the steam generator (27). The steam generator (27) heats the soft water to form steam. The steam enters the water flow controller (7) through the steam inlet (72) and enters the inner cavity of the steam preheater (22) through the steam outlet (71), and then enters S3; The S3 comprises high-temperature pyrolysis gas passing through a high-temperature pyrolysis gas inlet (41) into a reactor (4) of a first reaction system (31), and undergoing a reduction reaction with a high-entropy metal oxide in the reactor (4), wherein the high-entropy metal oxide is reduced by the reducing gas in the pyrolysis gas and converted into a metallic state, and at the same time, excess high-temperature pyrolysis gas enters a high-temperature flue gas inlet (223) of a steam preheater (22) through a high-temperature flue gas outlet (42), and the high-temperature pyrolysis gas in the steam preheater (22) undergoes heat exchange with steam, wherein the steam is heated to form superheated water steam, and the high-temperature pyrolysis gas that has undergone heat exchange is extracted from an exhaust gas outlet (224) by a flue gas induced draft fan (28) and then discharged through a chimney (29); At the same time, the superheated water vapor enters the high-temperature steam inlet (44) of the second reaction system (32) through the steam outlet (71) corresponding to the second reaction system (32) in the water flow controller (7), and undergoes an oxidation reaction with the high-entropy metal in the metallic state in the second reaction system (32). At this time, the high-entropy metal captures oxygen in the superheated water vapor and is converted into a high-entropy metal oxide, and hydrogen is generated at the same time. The generated hydrogen enters the condenser (5) through the hydrogen outlet (43) for condensation. At this time, the excess steam mixed in the hydrogen is condensed and discharged from the condensed water outlet (57). The condensed hydrogen passes through the water seal device (8) and enters the hydrogen collection system for collection; When the high-temperature pyrolysis gas is continuously introduced for one hour, it enters S4; The step S4 includes that after the high-temperature pyrolysis gas is continuously introduced for one hour, each high-temperature valve in the hot air flow controller (6) and the water flow controller (7) is switched to an open state, and the high-temperature pyrolysis gas is introduced into the reactor (4) of the second reaction system (32), and at the same time, superheated water steam is introduced into the reactor (4) of the first reaction system (31), and the reduction reaction or oxidation reaction is repeated.

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