Series-parallel hydrogen production purification system

Abstract

The utility model relates to a series-parallel hydrogen production and purification system, which comprises a hydrogen buffer tank, a plurality of hydrogen gas inlets, a plurality of hydrogen gas inlets, a plurality of hydrogen gas inlets, a plurality of hydrogen gas inlets, a plurality of hydrogen gas inlets and a plurality of hydrogen gas outlets, and is characterized in that the hydrogen gas inlets are respectively communicated with a hydrogen gas outlet of one of a plurality of hydrogen gas production systems and are used for conveying hydrogen gas flow from the hydrogen gas production systems to the hydrogen gas buffer tank; the deoxidizing tank is communicated with the hydrogen outlet of the hydrogen buffer tank, so that the hydrogen flow from the hydrogen buffer tank is conveyed into the deoxidizing tank for deoxidizing treatment; and the adsorption unit is communicated with the hydrogen outlet of the deoxidizing tank, so that the deoxidized hydrogen flow from the deoxidizing tank is conveyed into the adsorption unit to be subjected to adsorption dehydration treatment. Different hydrogen production equipment can be coupled, new energy power generation is achieved, particularly fluctuating renewable energy is directly used for the hydrogen production equipment to directly produce and purify hydrogen, energy consumption of auxiliary equipment can be saved, and equipment investment can be saved.

Description

Technical Field

[0001] This application relates to the field of hydrogen production by electrolyzing water, and particularly to a series-parallel hydrogen production and purification system. Background Art

[0002] Developing hydrogen energy can fundamentally alleviate the energy security problems brought about by China's large imports of oil and gas resources. Its special property as an energy storage medium can promote the rapid development of large-scale renewable energy, and it is an important means for China to achieve the "dual carbon goal".

[0003] Currently, the electrolytic water hydrogen production process includes alkaline electrolytic water hydrogen production (ALK), proton exchange membrane electrolytic water hydrogen production (PEM), high-temperature solid oxide electrolytic water hydrogen production (SOEC), and anion exchange membrane electrolytic water hydrogen production (AEM), etc. Different hydrogen production devices have their own advantages, but among the currently available mass-produced hydrogen production devices, it is difficult to match different hydrogen production devices with different hydrogen production capacities and different modes.

[0004] The main problem of the renewable energy hydrogen production system is the power volatility. Currently, most traditional ALK alkaline electrolyzers are designed to work at a stable power. PEM and AEM electrolyzers are more suitable for working at unstable power. However, the prices of PEM and AEM are 3-5 times higher than those of alkaline electrolyzers, and the cost is too high if used alone. How to design an efficient, safe and low-cost series-parallel hydrogen production system suitable for unstable energy is an urgent problem to be solved in the industry. Summary of the Utility Model

[0005] This application provides a series-parallel hydrogen production and purification system, characterized in that the series-parallel hydrogen production and purification system includes:

[0006] A hydrogen buffer tank, which is provided with a plurality of hydrogen inlets, and the plurality of hydrogen inlets are respectively connected to the hydrogen outlet of one of the plurality of hydrogen production systems, and is used to transport the hydrogen flow from the hydrogen production system to the hydrogen buffer tank;

[0007] An oxygen removal tank, which is connected to the hydrogen outlet of the hydrogen buffer tank, so that the hydrogen flow from the hydrogen buffer tank is transported into the oxygen removal tank for oxygen removal treatment;

[0008] An adsorption unit, which is connected to the hydrogen outlet of the oxygen removal tank, so that the hydrogen flow that has been subjected to oxygen removal treatment from the oxygen removal tank is transported into the adsorption unit for adsorption treatment.

[0009] In one embodiment, a one-way valve is provided between the hydrogen inlet of the hydrogen buffer tank and the hydrogen outlet of the hydrogen production system.

[0010] In one embodiment, the hydrogen buffer tank is further provided with a pressure detection sensor and a safety valve.

[0011] In one embodiment, the adsorption unit includes at least one condenser and at least one adsorption tower. Among them, the hydrogen gas inlet of the feed condenser in the at least one condenser is connected to the hydrogen gas outlet of the deoxidation tank, so that the deoxidized hydrogen gas flow from the deoxidation tank is transported to the adsorption unit for adsorption treatment; the product adsorption tower in the at least one adsorption tower is provided with a product flow outlet for transporting the product hydrogen gas flow that has undergone adsorption treatment by the adsorption unit out of the adsorption unit.

[0012] In one embodiment, the adsorption unit includes a first condenser, a second condenser, and a third condenser, as well as a first adsorption tower, a second adsorption tower, and a third adsorption tower;

[0013] Among them, the first condenser serves as the feed condenser, and its hydrogen gas inlet is connected to the hydrogen gas outlet of the deoxidation tank, and is used for transporting the deoxidized hydrogen gas to the first condenser for cooling;

[0014] The first adsorption tower is connected to the first condenser and is used for transporting the hydrogen gas cooled by the first condenser to the first adsorption tower for adsorption dehydration;

[0015] The second adsorption tower is connected to the first adsorption tower and is used for transporting the dried hydrogen gas processed by the first adsorption tower to the second adsorption tower to regenerate the second adsorption tower; the second adsorption tower is also sequentially connected to the second condenser and the third condenser and is used for separating and cooling the hydrogen gas flow flowing out of the second adsorption tower;

[0016] The third adsorption tower serves as the product adsorption tower and is connected to the third condenser, and is used for adsorbing the cooled hydrogen gas flow flowing out of the third condenser. The third adsorption tower is provided with a product flow outlet.

[0017] In one embodiment, the hybrid hydrogen production purification system further includes a filter,

[0018] The product flow outlet is communicated with the filter, so that the product hydrogen gas flow that has undergone adsorption treatment by the adsorption unit flows through the filter.

[0019] In one embodiment, the hybrid hydrogen production purification system further includes a condensing medium circulation unit, and the condensing medium circulation unit is respectively communicated with the condensers;

[0020] The condensing medium circulation unit is also communicated with the hydrogen buffer tank.

[0021] In one embodiment, the hybrid hydrogen production purification system further includes a condensate tank,

[0022] A drain port is provided at the bottom of the hydrogen buffer tank, and the drain port of the hydrogen buffer tank is communicated with the condensate tank;

[0023] Each condenser is provided with a drain outlet, and the drain outlet of the condenser is communicated with the condensate tank;

[0024] The hybrid hydrogen production and purification system further includes a drainage liquid seal, and the drainage liquid seal is communicated with the condensate tank.

[0025] In one embodiment, the plurality of hydrogen production systems include at least two of an ALK hydrogen production system, a PEM hydrogen production system, an AEM hydrogen production system, and an SOEC hydrogen production system.

[0026] In one embodiment, the plurality of hydrogen production systems include an ALK hydrogen production system and a PEM hydrogen production system.

[0027] This application can couple different hydrogen production devices to achieve new energy power generation. In particular, fluctuating renewable energy can be directly used to directly produce and purify hydrogen for the hydrogen production devices, which can save the energy consumption of auxiliary devices and can also save equipment investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram showing the hybrid hydrogen production and purification system of this application is shown.

[0029] Reference numerals:

[0030] 1 Hydrogen buffer tank; 11, 12 Hydrogen production systems;

[0031] 2 Deoxidation tank; 3 Adsorption unit;

[0032] 31 First condenser; 32 Second condenser; 33 Third condenser;

[0033] 34 First adsorption tower; 35 Second adsorption tower; 36 Third adsorption tower;

[0034] 4 Condensing medium circulation unit; 5 Filter; 6 Purity meter; 7 Dew point meter;

[0035] 8 Condensate tank; 9 Drainage liquid seal; 91 Unqualified hydrogen evacuation device;

[0036] 92 Gas evacuation device; 93 Drainage device; 94 Liquid replenishing device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] The present application will be further described in detail below with reference to the drawings and embodiments. Through these descriptions, the features and advantages of the present application will become more clearly defined.

[0038] The special term "exemplary" here means "serving as an example, embodiment, or illustration". Any embodiment described as "exemplary" here does not have to be construed as superior or better than other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings do not have to be drawn to scale unless otherwise specified.

[0039] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0040] As Figure 1 shown, the present application provides a hybrid hydrogen production and purification system, characterized in that the hybrid hydrogen production and purification system includes:

[0041] A hydrogen buffer tank 1, the hydrogen buffer tank 1 is provided with a plurality of hydrogen inlets, and the plurality of hydrogen inlets are respectively connected to the hydrogen outlet of one of the plurality of hydrogen production systems 11, 12, for transporting the hydrogen flow from the hydrogen production system to the hydrogen buffer tank;

[0042] An oxygen removal tank 2, the oxygen removal tank 2 is connected to the hydrogen outlet of the hydrogen buffer tank 1, so that the hydrogen flow from the hydrogen buffer tank 1 is transported into the oxygen removal tank 2 for oxygen removal treatment;

[0043] An adsorption unit 3, the adsorption unit 3 is connected to the hydrogen outlet of the oxygen removal tank 2, so that the hydrogen flow that has been subjected to oxygen removal treatment from the oxygen removal tank 2 is transported into the adsorption unit 3 for adsorption treatment.

[0044] The hybrid hydrogen production and purification system of the present application can be used to couple devices with different hydrogen production modes, and can be matched with different hydrogen production devices with different hydrogen production amounts, and can optimize the hydrogen production performance in terms of equipment cost and adaptability to fluctuating electric energy. These different hydrogen production systems can include at least two of an ALK hydrogen production system, a PEM hydrogen production system, an AEM hydrogen production system, and a SOEC hydrogen production system, especially an ALK hydrogen production system and a PEM hydrogen production system.

[0045] Before the hydrogen from hydrogen production devices with different modes enters the hydrogen buffer tank 1, it generally undergoes gas-liquid separation first to remove the moisture carried therein. These hydrogen gases have different pressures and flow rates, and the water content is also different, and purification treatment needs to be carried out under different conditions and in different devices. If separate adsorption units are used for purification treatment respectively, the overall equipment investment will be increased. The hybrid hydrogen production and purification system of the present application can enable two or more hydrogen production devices to share a purification system. Compared with separating two or more sets of purification systems, it can save the energy required by the heating device in the purification process, and at the same time can save a large amount of equipment investment costs.

[0046] In the hybrid hydrogen production and purification system of the present application, the hydrogen from hydrogen production devices with different modes is mixed in the hydrogen buffer tank 1, so that hydrogen production devices with different hydrogen production modes with different production ratio combinations can be matched according to needs.

[0047] In one embodiment, a check valve (not shown) can be added at the front end of the interface where hydrogen from different hydrogen production devices is connected to the hydrogen buffer tank 1 to prevent reverse flow of hydrogen caused by different pressures.

[0048] In one embodiment, the hydrogen buffer tank 1 is also provided with a pressure detection sensor (not shown) and a safety valve (not shown). Through the pressure signal feedback mechanism of the pressure detection sensor and the safety valve, the safety valve can be activated to discharge when the pressure in the hydrogen buffer tank 1 exceeds the preset value, avoiding dangerous situations.

[0049] In one embodiment, the hydrogen buffer tank 1 is also connected to the condensing medium circulation unit 4, so that the hydrogen mixed inside the hydrogen buffer tank 1 can be condensed and cooled in the hydrogen buffer tank 1, which can improve the hydrogen purification quality. This connection method can adopt the methods known in the art. For example, a jacket can be provided outside the hydrogen buffer tank 1, and the condensing medium circulation unit 4 is connected to the jacket, so that the condensing medium of the condensing medium circulation unit 4 flows through the jacket to condense and cool the hydrogen mixed inside the hydrogen buffer tank 1.

[0050] A flow regulating mechanism can also be provided at the gas outlet of the hydrogen buffer tank 1 to regulate the gas flow flowing out of the hydrogen buffer tank 1, so that the pressure output after the gas is mixed in the buffer tank can be the pressure required by the purification system.

[0051] The hydrogen buffer tank included in the hybrid hydrogen production and purification system of the present application can improve the safety of the purification system. The purification system includes a deoxygenation and dewatering system, which usually has a heating device. This device requires a relatively stable hydrogen flow rate to maintain temperature stability. The hydrogen buffer tank can effectively balance the pressure and flow rate of the hydrogen entering the purification system, ensure that the temperature will not be locally too high, and avoid safety risks. Secondly, the hydrogen pressures and flow rates at the outlets of different hydrogen production devices are often different. Without a hydrogen buffer tank, directly entering the deoxygenation tank will affect the uniformity of the flow field and temperature field in the deoxygenation tank and affect the normal operation of the deoxygenation tank. On the contrary, introducing hydrogen from different hydrogen production devices into the hydrogen buffer tank and then into the deoxygenation tank can ensure the uniformity of the flow field and temperature field in the deoxygenation tank. Thirdly, the hydrogen buffer tank can also reduce the water content in hydrogen, especially the content of alkali in water. The unpurified hydrogen from the hydrogen production device usually contains a certain amount of moisture. After the hydrogen enters the hydrogen buffer tank, some droplets will flow to the bottom of the tank after colliding with the inner container of the tank and will be discharged regularly, thereby reducing the moisture in the hydrogen flow entering the subsequent deoxygenation tank and adsorption unit. Fourthly, the hydrogen buffer tank can further prevent the alkali solution from the hydrogen production system from being brought into the deoxygenation tank in the subsequent process, covering the surface of the catalyst, causing the catalyst to lose its catalytic activity and reducing the service life of the catalyst in the deoxygenation tank.

[0052] The hybrid hydrogen production and purification system of the present application further includes a deoxidation tank 2. The deoxidation tank 2 can use the method of catalytic deoxidation to remove impurity oxygen to purify hydrogen. The deoxidation tank 2 is filled with a room-temperature catalytic deoxidizer. A small amount of oxygen in the hydrogen combines with hydrogen to form water after being catalyzed by the catalyst, so that the oxygen content is lower than 5 ppm; an electric heating element is installed in the deoxidation tank 2 to increase the temperature of the deoxidation tank 2, so that the water generated by the reaction is carried out of the deoxidation tank 2 in a gaseous form.

[0053] The hybrid hydrogen production and purification system of the present application further includes an adsorption unit 3 for adsorbing and treating the deoxygenated hydrogen stream from the deoxidation tank 2. The adsorption unit 3 can further adsorb and treat hydrogen by means of cooling and dehumidification, adsorption and drying to remove the moisture contained therein, so as to provide qualified hydrogen with high purity. In one embodiment, the adsorption unit 4 includes at least one condenser and at least one adsorption tower. Among them, the hydrogen gas inlet of the feed condenser in the at least one condenser is connected to the hydrogen gas outlet of the deoxidation tank, so that the deoxygenated hydrogen stream from the deoxidation tank is transported to the adsorption unit for adsorption treatment; the product adsorption tower in the at least one adsorption tower is provided with a product flow outlet for transporting the product hydrogen stream that has been adsorbed and treated by the adsorption unit out of the adsorption unit. The adsorption unit 4 is mainly used for adsorbing and dehydrating to remove the moisture contained in the hydrogen stream, and can also remove some trace impurities.

[0054] As Figure 1 shown, in one embodiment, the adsorption unit 3 includes a first condenser 31, a second condenser 32 and a third condenser 33, and a first adsorption tower 34, a second adsorption tower 35 and a third adsorption tower 36.

[0055] The first adsorption tower 34, the second adsorption tower 34 and the third adsorption tower 36 are filled with a desiccant with a large adsorption capacity and good heat resistance, and can include three working condition states, namely working, regeneration and adsorption during the working process to realize the continuity of the whole device.

[0056] The first condenser 31 serves as a feed condenser. Its hydrogen gas inlet is connected to the hydrogen gas outlet of the deaeration tank 2, and is used to transport the hydrogen gas that has undergone deaeration treatment into the first condenser for cooling. The first adsorption tower 34 is connected to the first condenser 31, and is used to transport the hydrogen gas cooled by the first condenser 31 into the first adsorption tower 34 for adsorption dehydration. Hydrogen gas can enter from the lower interface of the first adsorption tower 34. The saturated water vapor contained in the hydrogen gas in the container is adsorbed by the desiccant, and the dried hydrogen gas flows out from the upper interface of the first adsorption tower 34. After passing through the pneumatic three-way ball valve, it is divided into two paths. One path flows to the second adsorption tower 35, and the other path enters the product gas pipeline through the stop valve. The gas volume distribution of the two paths is adjusted by the pneumatic regulating valve. Generally, this pneumatic regulating valve is in a closed state, and all the gas volume flows to the second adsorption tower 35. When the heating interlock time of the second adsorption tower 35 in the regeneration state exceeds a predetermined time, such as 3h, and the electric heating element is intact, the opening of the stop valve can be appropriately adjusted to make the heating interlock time less than the predetermined time, such as 3h.

[0057] The second adsorption tower 35 is connected to the first adsorption tower 34, and is used to transport the dried hydrogen gas processed by the first adsorption tower 34 into the second adsorption tower to regenerate the second adsorption tower 35. The high-purity dried hydrogen gas flowing out from the first adsorption tower 34 enters the second adsorption tower 35 from the upper interface of the second adsorption tower 35 through the pneumatic three-way ball valve. In the second adsorption tower 35, the heater element is automatically started. The hydrogen gas is heated and raised in temperature by the electric heater, and then flows through the desiccant bed layer. The water adsorbed on the desiccant contacts the hot hydrogen gas and desorbs from the desiccant in the form of water vapor, and flows out through the lower interface of the second adsorption tower 35 together with the hydrogen gas, thereby regenerating the second adsorption tower 35. Thus, after the second adsorption tower is saturated with adsorption, impurities can be discharged by back blowing and condensation, so that the second adsorption tower can regain its adsorption function and can be used for the next working cycle.

[0058] The second adsorption tower 35 is also sequentially connected to the second condenser 32 and the third condenser 33, and is used to separate and cool the hydrogen gas flow flowing out from the second adsorption tower 35. As described above, the relatively hot hydrogen gas and water vapor mixed gas discharged from the second adsorption tower 35 enters the second condenser 32. The hydrogen gas and the water vapor carried by it are cooled, and the condensed water is separated from the hydrogen gas. The condensed water is regularly and automatically discharged from the system through the drain valve. The cooled hydrogen gas enters the third adsorption tower 36 after being further cooled by the third condenser 33.

[0059] The third adsorption tower 36 serves as a product adsorption tower and is connected to the third condenser 33, and is used to adsorb the cooled hydrogen gas flow flowing out from the third condenser. The third adsorption tower 36 is provided with a product flow outlet. The hydrogen gas from the third condenser 33 enters from the lower interface of the third adsorption tower 36. The saturated water vapor contained in the hydrogen gas is adsorbed by the desiccant, and the dried hydrogen gas flows out from the upper interface of the third adsorption tower 36.

[0060] It should be noted that multiple pneumatic three-way ball valves can be provided in the adsorption unit 3 as needed, so that the first adsorption tower 34, the second adsorption tower 34, and the third adsorption tower 36 can be switched among the working, regeneration, and adsorption states as needed. In a switching cycle, the three adsorption towers are respectively in the working, regeneration, and adsorption operating states. The hydrogen gas flow from the deaerator tank 2 first enters the adsorption tower in the working state, then enters the adsorption tower in the regeneration state, and finally enters the adsorption tower in the adsorption state. Thus, the three adsorption towers are switched among the above three operating states to achieve the continuity of the operation of the entire device.

[0061] In one embodiment, the hybrid hydrogen production and purification system further includes a filter 5 for removing dust contained in the product hydrogen gas flow, and the finally qualified product hydrogen gas flow is transported to the storage tank 20 or downstream equipment and devices.

[0062] In one embodiment, the hybrid hydrogen production and purification system further includes a condensing medium circulation unit 4. The condensing medium circulation unit 4 is respectively connected and communicated with the condensers 31, 32, 33 for circulating the condensing medium in the condensers 31, 32, 33. The condensing medium can circulate in the tube side of the condensers 31, 32, 33, while the hydrogen gas flow passes through the shell side of the condensers 31, 32, 33. The condensing medium circulation unit 4 includes a condensing medium inlet tank 41 for respectively supplying the condensing medium to the condensers 31, 32, 33 and the hydrogen buffer tank 1, and a condensing medium return tank 42 for respectively recovering the condensing medium from the condensers 31, 32, 33 and the hydrogen buffer tank 1. It is also necessary to process, cool the condensing medium return tank 42 and transport it to the condensing medium inlet tank 41 to achieve the circulation of the condensing medium. The condensing medium can be low-temperature cooling water.

[0063] In one embodiment, the hybrid hydrogen production and purification system further includes a condensate tank 8.

[0064] A drain port is provided at the bottom of the hydrogen buffer tank 1, and the drain port of the hydrogen buffer tank 1 is connected and communicated with the condensate tank 8; each of the condensers 31, 32, 33 is provided with a drain port, and the drain ports of the condensers 31, 32, 33 are connected and communicated with the condensate tank 8; for discharging the condensed water in the hydrogen buffer tank 1 and each of the condensers 31, 32, 33.

[0065] The hybrid hydrogen production and purification system further includes a drain liquid seal 9, which is connected to the condensate tank 8. The drain liquid seal 9 can be connected to a gas evacuation device 92 for discharging the accumulated gas in the drain liquid seal 9. The drain liquid seal 9 can also discharge the condensed water through a liquid drainer 93 and supplement the liquid seal water through a liquid replenisher 94. Through the above settings, the hybrid purification system of the present application can automatically and regularly remove the condensed water and impurities, and also has a drain liquid seal function. After discharging the condensed water, it can automatically supplement the liquid seal water to prevent air from entering the drain pipe of the condensate tank.

[0066] The hybrid purification system is also provided with a purity meter 6 and a dew point meter 7, so as to realize the function of automatically detecting the dew point and purity of hydrogen.

[0067] The hybrid purification system is also provided with a non-conforming hydrogen evacuation device 91 for automatically screening and evacuating non-conforming hydrogen.

[0068] In one embodiment, the hydrogen flow from the ALK hydrogen production system 11 can be connected to the hydrogen buffer tank 1 and the non-conforming hydrogen evacuation device 91 respectively through a three-way valve. When the hydrogen flow is detected to be non-conforming, it is directly introduced into the non-conforming hydrogen evacuation device 91 for evacuation to avoid affecting the purification efficiency and results of the hybrid purification system. The hydrogen flow from the PEM hydrogen production system 12 can be directly connected to the hydrogen buffer tank 1, or can also be connected to the hydrogen buffer tank 1 and the non-conforming hydrogen evacuation device 91 respectively through a three-way valve.

[0069] The hybrid hydrogen production and purification system of the present application may also include some other components, such as pipelines and pipe fittings for realizing liquid connection, valves (such as three-way valves), gas-liquid separation equipment, pumping equipment, control instruments (such as pressure gauges), etc., which will not be elaborated here.

[0070] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0071] The above describes the present application in combination with preferred embodiments. However, these embodiments are only exemplary and only serve an illustrative purpose. On this basis, various substitutions and improvements can be made to the present application, and all of these fall within the protection scope of the present application.

Claims

1. A hybrid hydrogen production and purification system, characterized in that The hybrid hydrogen production and purification system includes: A hydrogen buffer tank, which is provided with a plurality of hydrogen inlets, and the plurality of hydrogen inlets are respectively communicated with the hydrogen outlet of one of the plurality of hydrogen production systems, and is used to transport the hydrogen flow from the hydrogen production system to the hydrogen buffer tank; An oxygen removal tank, which is communicated with the hydrogen outlet of the hydrogen buffer tank, so that the hydrogen flow from the hydrogen buffer tank is transported into the oxygen removal tank for oxygen removal treatment; An adsorption unit, which is communicated with the hydrogen outlet of the oxygen removal tank, so that the hydrogen flow that has undergone oxygen removal treatment from the oxygen removal tank is transported into the adsorption unit for adsorption dehydration treatment.

2. The hybrid hydrogen production and purification system according to claim 1, wherein A check valve is provided between the hydrogen inlet of the hydrogen buffer tank and the hydrogen outlet of the hydrogen production system.

3. The hybrid hydrogen production and purification system according to claim 1, wherein The hydrogen buffer tank is further provided with a pressure detection sensor and a safety valve.

4. The hybrid hydrogen production and purification system according to claim 1, wherein The adsorption unit includes at least one condenser and at least one adsorption tower. Among them, the hydrogen flow inlet of the feed condenser in the at least one condenser is communicated with the hydrogen outlet of the oxygen removal tank, so that the hydrogen flow that has undergone oxygen removal treatment from the oxygen removal tank is transported into the adsorption unit for purification treatment; the product adsorption tower in the at least one adsorption tower is provided with a product flow outlet, which is used to transport the product hydrogen flow that has undergone adsorption treatment by the adsorption unit out of the adsorption unit.

5. The hybrid hydrogen production and purification system according to claim 4, characterized in that, The adsorption unit includes a first condenser, a second condenser and a third condenser, and a first adsorption tower, a second adsorption tower and a third adsorption tower; Among them, the first condenser is used as the feed condenser, and its hydrogen flow inlet is communicated with the hydrogen outlet of the oxygen removal tank, and is used to transport the hydrogen that has undergone oxygen removal treatment into the first condenser for cooling; The first adsorption tower is connected to the first condenser, and is used to transport the hydrogen cooled by the first condenser into the first adsorption tower for adsorption dehydration; The second adsorption tower is connected to the first adsorption tower, and is used to transport the dry hydrogen processed by the first adsorption tower into the second adsorption tower to regenerate the second adsorption tower; the second adsorption tower is also sequentially connected to the second condenser and the third condenser, and is used to separate and cool the hydrogen flow flowing out of the second adsorption tower; The third adsorption tower is used as the product adsorption tower and is connected to the third condenser, and is used to adsorb the cooled hydrogen flow flowing out of the third condenser, and the third adsorption tower is provided with a product flow outlet.

6. The hybrid hydrogen production and purification system according to claim 4 or 5, characterized in that, The hybrid hydrogen production and purification system further includes a filter, The product flow outlet is communicated with the filter, so that the product hydrogen flow that has undergone adsorption treatment by the adsorption unit flows through the filter.

7. The hybrid hydrogen production and purification system according to claim 4, wherein The hybrid hydrogen production and purification system further includes a condensing medium circulation unit, and the condensing medium circulation unit is respectively communicated with the condensers; The condensing medium circulation unit is also communicated with the hydrogen buffer tank.

8. The hybrid hydrogen production and purification system according to claim 1, wherein, The hybrid hydrogen production and purification system further includes a condensate tank, A drain port is provided at the bottom of the hydrogen buffer tank, and the drain port of the hydrogen buffer tank is communicated with the condensate tank; Each condenser is provided with a drain port, and the drain port of the condenser is communicated with the condensate tank; The hybrid hydrogen production and purification system further includes a drain liquid seal, and the drain liquid seal is communicated with the condensate tank.

9. The hybrid hydrogen production and purification system according to claim 1, wherein, The plurality of hydrogen production systems includes at least two of an ALK hydrogen production system, a PEM hydrogen production system, an AEM hydrogen production system, and a SOEC hydrogen production system.

10. The hybrid hydrogen production and purification system according to claim 9, wherein The plurality of hydrogen production systems includes an ALK hydrogen production system and a PEM hydrogen production system.

Images