Cyclic regeneration artificial photosynthesis reaction device and reaction system

Abstract

The utility model provides a cyclic regeneration artificial photosynthesis reaction device and a reaction system, the device comprises a light source, a first regenerator, a reactor, a material return pipe and a lifting pipe, the light source is used for providing photocatalytic light driving force; the first regenerator is of a cavity structure, and a discharge port is formed in the lower part of the first regenerator and is used for collecting an inactivated catalyst discharge device; the lifting pipe is arranged at the upper part of the first regenerator and is used for communicating the first regenerator with the reactor; the reactor is of a cavity structure, a material sinking pipe is arranged at the lower part of the reactor, and the reactor is connected to the material return pipe through the material sinking pipe; and the return pipe is used for communicating the reactor with the lower part of the first regenerator and transmitting the deactivated catalyst collected by the reactor to the first regenerator. According to the technical scheme provided by the utility model, the catalyst loss can be reduced while the reaction conversion rate is improved.

Description

Technical Field

[0001] This utility model relates to the field of catalytic chemistry technology, specifically to a regenerative artificial photosynthesis reaction device and reaction system. Background Technology

[0002] When a gas or liquid passes through a bed of particles at sufficient velocity, these particles become suspended and exhibit liquid-like behavior, a state known as "fluidization." In this state, the voids between particles increase, the bed volume expands, and the particles move irregularly within the bed. In a fluidized bed, the particles are suspended, resulting in a large gas-solid contact area and reduced diffusion resistance, thus increasing the overall reaction rate during fluidization. The particle group within a fluidized bed exhibits fluid-like properties, allowing for large-scale removal and introduction of particles from the device and extensive circulation between two fluidized beds. This enables coupled reaction processes such as reaction-regeneration, endothermic-exothermic, forward-reverse reactions, and reaction-separation processes. Fluidized bed reactors offer rapid heat and mass transfer rates, uniform bed temperature, and stable operation, making them particularly advantageous for large-scale production processes with significant thermal effects.

[0003] As time goes by, our understanding of the internal flow mechanism of fluidized beds has deepened. Today, fluidized beds are no longer limited to the traditional petrochemical industry; they have found applications in many emerging fields such as biomass gasification, waste treatment, and pharmaceuticals. In particular, circulating fluidized beds (CFBs) have demonstrated outstanding performance in power generation and clean coal utilization due to their excellent environmental performance and high energy conversion efficiency. With the continuous evolution of scientific and technological advancements, CFBs have occupied an indispensable position in many industrial processes due to their unique advantages. However, existing CFB devices still have many technical problems, such as: significant deviations between the gas flow state and the piston flow, backmixing of the gas flow with bed particles leading to poor gas-solid contact and reduced reaction conversion rates; and violent collisions between catalyst particles causing catalyst loss and difficulties in dust removal, among other issues.

[0004] Therefore, a technical solution is needed that can improve the reaction conversion rate while preventing back-mixing of the gas flow with bed particles, reducing catalyst loss, and also enabling catalyst recovery and dust removal inside the device. Utility Model Content

[0005] This invention aims to provide a recyclable artificial photosynthesis reaction device and system that can improve the reaction conversion rate while preventing back-mixing of airflow and bed particles, reducing catalyst loss, and also enabling catalyst recovery and dust removal inside the device.

[0006] According to one aspect of this utility model, a regenerative artificial photosynthesis reaction device is provided, comprising: a light source, a first regenerator, a reactor, a return pipe, and a riser pipe, wherein...

[0007] The light source is used to provide photocatalytic light driving force for chemical reactions;

[0008] The first regenerator has a cavity structure, and a discharge port is provided at the bottom of the first regenerator for collecting the deactivated catalyst and discharging it out.

[0009] The riser is located on the upper part of the first regenerator and is used to connect the first regenerator and the reactor.

[0010] The reactor is a cavity structure that provides a closed space for chemical reactions. A light source window is provided on the side of the cavity so that the light emitted by the light source can pass through the light source window to illuminate the inside of the cavity for catalytic reaction. A settling pipe is provided at the bottom of the reactor and is connected to the return pipe through the settling pipe.

[0011] The return pipe is used to connect the reactor to the lower part of the first regenerator, and simultaneously transfers the deactivated catalyst collected by the reactor to the first regenerator and inputs air into the first regenerator.

[0012] According to some embodiments, the device further includes: one or more second regenerators and a check valve, wherein,

[0013] The single or multiple second regenerators are connected via the check valve, and the single or multiple second regenerators are connected to the reactor via the riser.

[0014] According to some embodiments, the first regenerator includes a feeder for adding catalyst.

[0015] According to some embodiments, the feeder includes a star-shaped discharge valve for maintaining the seal of the first regenerator while regulating the catalyst flow rate.

[0016] According to some embodiments, the reactor includes: a gas concentration sensor for measuring the concentration of the gas to be reacted inside the reactor.

[0017] According to some embodiments, the reactor further includes an inlet pipe and a porous baffle. The porous baffle is disposed at the lower part of the reactor, and the inlet pipe is disposed below the porous baffle, so that the gas to be reacted is mixed through the inlet pipe and then further uniformly mixed and dispersed in the reactor through the porous baffle.

[0018] According to some embodiments, the inlet pipe includes: a first one-way valve, a gas mixer, and a flow rate controller. The flow rate controller controls the flow rate of one or more of the gases to be reacted, and sends the gases to be reacted into the gas mixer for preliminary mixing, and then delivers them to the reactor through the one-way valve.

[0019] According to some embodiments, the return pipe includes a second one-way valve and a third one-way valve arranged in sequence, and nitrogen gas is introduced into the closed pipe between the second one-way valve and the third one-way valve to isolate the reaction gas and prevent the reaction gas from entering the return pipe.

[0020] According to some embodiments, the cavities of the first regenerator, the reactor, and the second regenerator are also equipped with cyclone separators for periodic cleaning and exhaust gas discharge.

[0021] According to the embodiments of this utility model, the utilization rate of the catalyst is improved by recycling the catalyst, reducing catalyst waste and abandonment, and reducing the impact on the environment; the device enables the catalyst and the reaction gas to be fully mixed to increase their contact area, and cyclone separators are provided inside the reactor, the first regenerator and the second regenerator for gas-solid separation, realizing continuous industrial preparation operation and improving production efficiency.

[0022] According to some embodiments, multiple regenerators can further improve the catalyst regeneration efficiency and extend the catalyst's lifespan. Through catalyst recycling and multi-stage regeneration, the efficiency and economy of photocatalytic reactions are significantly improved, making it suitable for a variety of photocatalytic applications.

[0023] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the present invention. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0025] Figure 1 A schematic diagram of a regenerative artificial photosynthesis reaction apparatus according to an example embodiment is shown.

[0026] Figure 2 A schematic diagram of a regenerative artificial photosynthesis reaction apparatus according to another exemplary embodiment is shown.

[0027] Figure 3 A schematic diagram of a reactor for a regenerative artificial photosynthesis reaction apparatus according to an example embodiment is shown.

[0028] Figure 4A schematic diagram of the first regenerator of a cyclic regenerating artificial photosynthesis reaction device according to an exemplary embodiment is shown.

[0029] Figure 5 A schematic diagram of the second regenerator of a cyclic regenerating artificial photosynthesis reaction device according to an example embodiment is shown.

[0030] Figure 6 A schematic diagram of a cyclone separator for a regenerative artificial photosynthesis reaction apparatus according to an example embodiment is shown.

[0031] Figure 7 A schematic diagram of the check valve of a regenerative artificial photosynthesis reaction device according to an example embodiment is shown. Detailed Implementation

[0032] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted.

[0033] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a full understanding of embodiments of the present invention. However, those skilled in the art will recognize that the technical solutions of the present invention can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of the present invention. The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities.

[0034] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0035] It should be understood that although the terms first, second, third, etc., may be used herein to describe various components, these components should not be limited by these terms. These terms are used to distinguish one component from another. Therefore, the first component discussed below may be referred to as the second component without departing from the teachings of this utility model. As used herein, the term "and / or" includes all combinations of any one and more of the associated listed items.

[0036] Those skilled in the art will understand that the accompanying drawings are merely schematic diagrams of exemplary embodiments, and the modules or processes in the drawings are not necessarily essential for implementing this utility model, and therefore cannot be used to limit the scope of protection of this utility model.

[0037] As time progresses, our understanding of the internal flow mechanisms of fluidized beds has deepened. In a fluidized bed, particles are suspended, resulting in a large gas-solid contact area and reduced diffusion resistance, thus increasing the overall reaction rate during fluidization. The particle groups within a fluidized bed exhibit fluid-like properties, allowing for large-scale removal and introduction of particles from the device and extensive circulation between two fluidized beds. This enables coupled reaction processes such as reaction-regeneration, endothermic-exothermic, forward-reverse reactions, and reaction-separation coupling. Fluidized bed reactors offer rapid heat and mass transfer rates, uniform bed temperature, and stable operation, making them particularly advantageous for large-scale production processes with significant thermal effects. Today, fluidized beds are not limited to the traditional petrochemical industry; they have found applications in emerging fields such as biomass gasification, waste treatment, and pharmaceuticals. In particular, circulating fluidized beds (CFBs) have demonstrated outstanding performance in power generation and clean coal utilization due to their excellent environmental performance and high energy conversion efficiency.

[0038] With the continuous advancement of science and technology, circulating fluidized beds have become indispensable in many industrial processes due to their unique advantages. However, existing circulating fluidized bed devices still have many technical problems, such as: significant deviations between the gas flow state and the piston flow, backmixing of the gas flow with bed particles leading to poor gas-solid contact and reduced reaction conversion rates; and violent collisions between catalyst particles causing catalyst loss and difficulties in dust removal, among other issues.

[0039] To address this issue, this invention proposes a recyclable artificial photosynthesis reaction device and system. This system improves reaction conversion rates while preventing backmixing of airflow with bed particles, reducing catalyst loss, and enabling catalyst recovery and internal dust removal. By simulating the natural photosynthesis process under artificial conditions, water is decomposed to produce hydrogen (H2) and oxygen (O2) under artificial conditions, through catalysts, light, high temperature, and high pressure. Alternatively, carbon dioxide (CO2) reacts with hydrogen (H2) to produce hydrocarbons. This artificial photosynthesis method effectively promotes the green conversion of carbon dioxide (CO2), efficiently collects energy resources, avoids energy loss in natural systems, and can simultaneously alleviate environmental pollution and address the shortage of fossil fuels.

[0040] According to the embodiments, the utilization rate of the catalyst is improved by recycling the catalyst, reducing catalyst waste and abandonment, and reducing the impact on the environment; the device enables the catalyst and the reaction gas to be fully mixed to increase their contact area, and cyclone separators are provided inside the reactor, the first regenerator and the second regenerator for gas-solid separation, realizing continuous industrial preparation operation and improving production efficiency.

[0041] According to some embodiments, multiple regenerators can further improve the catalyst regeneration efficiency and extend the catalyst's lifespan. Through catalyst recycling and multi-stage regeneration, the efficiency and economy of photocatalytic reactions are significantly improved, making it suitable for a variety of photocatalytic applications.

[0042] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments of the present invention.

[0043] Figure 1 A schematic diagram of a regenerative artificial photosynthesis reaction apparatus according to an example embodiment is shown.

[0044] See Figure 1 The figure illustrates an example embodiment of a regenerative artificial photosynthesis reaction device. The device includes: a light source 01, a first regenerator 02, a reactor 03, a return pipe 04, and a riser pipe 05. The light source 01 provides photocatalytic light-driven force for the chemical reaction. The first regenerator 02 is a cavity structure, with a discharge port 0201 at its lower part for collecting deactivated catalyst and discharging it. The riser pipe 05 is located at the upper part of the first regenerator 02, connecting the first regenerator 02 to the reactor 03. The reactor 03 is a cavity. The structure provides a sealed space for chemical reactions. A light source window 0303 is provided on the side of the cavity structure, so that the light emitted by the light source 01 can pass through the light source window 0303 to illuminate the interior of the cavity structure for catalytic reaction. A settling pipe 0301 is provided at the bottom of the reactor 03 and is connected to the return pipe 04 through the settling pipe 0301. The return pipe 04 is used to connect the reactor 03 and the lower part of the first regenerator 02, transferring the deactivated catalyst collected by the reactor 03 to the first regenerator 02 while simultaneously inputting air into the first regenerator 02.

[0045] According to some embodiments, the light source 01 provides photocatalysis for the chemical reaction. Light emitted from the light source 01 illuminates the interior of the reactor 03 through the light source window 0303, promoting the photocatalytic reaction. Optionally, an argon lamp can be used as the light source 01, or sunlight can be directly introduced as the light source 01. Users can flexibly choose according to the actual application scenario and installation environment of the device, or use both, to meet the fluidized bed reaction conditions while saving energy consumption and reducing actual production and operating costs.

[0046] According to some embodiments, the light source is provided by an adjustable solar-xenon lamp system. The xenon lamp intensity is adjusted according to the sunlight intensity, dynamically regulating the light source. This utilizes sunlight to reduce energy consumption while achieving dynamic stability of the light source through dynamic adjustment of the xenon lamp, without affecting the reaction process. A solar concentrator is installed on the roof of the plant, using a Fresnel lens, and transmits light to the reactor light source area via optical fiber. A beam straightener combines sunlight and xenon lamp light, and an online light intensity sensor provides directional supplementary lighting for the xenon lamp, ensuring the reaction is not affected by weather. The xenon lamp is an industrial-grade xenon lamp. At the end of the optical fiber, it passes through the beam straightener along with sunlight, combining the sunlight and xenon lamp light sources into a single beam that enters the optical shaper. The beam straightener uniformly mixes the sunlight and xenon lamp light collected in the optical fiber into a single beam. The optical shaper contains different types of lenses, and the direction, intensity, and shape / size of the light source are adjusted according to the type, number, and angle of the lenses. The beam straightener and optical shaper can be water-cooled to prevent localized overheating and device failure.

[0047] According to some embodiments, the first regenerator 02 is a cavity structure. Inside the cavity, carbon deposits and other impurities on the catalyst surface can be removed by high temperature. A discharge port 0201 is provided at the lower part of the cavity structure for collecting the deactivated catalyst and carbon deposits or other impurities on the catalyst surface and discharging them from the device.

[0048] According to some embodiments, a riser pipe 05 is provided at the upper part of the cavity structure to connect the first regenerator 02 and the reactor 03, so that the fluid formed by the gas to be reacted and the catalyst particles in the first regenerator 02 enters the reactor 03 along the riser pipe 05.

[0049] According to some embodiments, similar to the first regenerator 02, the reactor 03 also has a cavity structure, providing a sealed space for chemical reactions. A light source window 0303 is provided on the side of the reactor 03, allowing the fluid to undergo a photocatalytic reaction under the illumination of the light source 01. A settling pipe 0301 is provided below the cavity of the reactor 03 to collect deactivated catalyst and carbon deposits or other impurities on the surface of the deactivated catalyst. The settling pipe 0301 is connected to a return pipe 04 for collecting deactivated catalyst.

[0050] According to some embodiments, the return pipe 04 connects the reactor 03 and the lower part of the first regenerator 02, transferring the deactivated catalyst collected by the reactor 03 to the first regenerator 02 while simultaneously inputting air into the first regenerator 02.

[0051] According to some embodiments, the riser 05 is disposed on the upper part of the first regenerator 02 and is used to connect the first regenerator 02 and the reactor 03. Through the separate connection between the riser 05 and the return pipe 04, the catalyst can circulate between the two.

[0052] According to some embodiments, an active catalyst is added to the first regenerator 02, forming a fluid with heated air. The fluid enters the reactor 03 through the riser pipe 05, where it mixes with the gas to be reacted. Light emitted from the light source 01 illuminates the interior of the reactor 03 through the light source window 0303, activating the catalyst and promoting the photocatalytic reaction. After the reaction, the deactivated catalyst inside the reactor 03 enters the return pipe 04 through the settling pipe 0301 and returns to the first regenerator 02. Air is introduced into the first regenerator 02 through the return pipe 04, and the deactivated catalyst undergoes high-temperature regeneration under the influence of the introduced air. The regenerated catalyst returns to the reactor 03 through the riser pipe 05 to continue participating in the photocatalytic reaction. This design improves catalyst utilization through catalyst recycling, achieving cyclic regeneration of the artificial photosynthetic reaction, reducing catalyst waste and disposal, and minimizing environmental impact. The device can operate continuously, improving production efficiency. By recycling and regenerating the catalyst, the efficiency and economy of photocatalytic reactions are significantly improved, making it suitable for a variety of photocatalytic applications.

[0053] Figure 2 A schematic diagram of a regenerative artificial photosynthesis reaction apparatus according to another exemplary embodiment is shown.

[0054] See Figure 2 The figure shows a regenerative artificial photosynthesis reaction device according to another example embodiment. As can be seen from the figure, the device further includes: one or more second regenerators 06 and a check valve 07, wherein the one or more second regenerators 06 are connected through the check valve 07, and the one or more second regenerators 06 are connected to the reactor 03 through the riser pipe 05.

[0055] According to some embodiments, riser 05 is used to elevate the regenerated catalyst to reactor 03, achieving efficient catalyst recycling. See also Figure 3 The second regenerator 06 also adopts a cavity structure to regenerate the deactivated catalyst. It is connected to the reactor 03 via the riser 05 to achieve catalyst recycling. A discharge port is provided at the bottom to collect the deactivated catalyst and carbon deposits or other impurities on the catalyst surface and discharge them from the device.

[0056] According to some embodiments, the first regenerator 02 collects the deactivated catalyst through the discharge port and regenerates it under the action of incoming air. The check valve 07 connects to one or more second regenerators 06, through which the deactivated catalyst can be transferred to these second regenerators 06 for further regeneration. The regenerated catalyst is returned to the reactor 03 through the riser 05, ensuring efficient recycling of the catalyst. By recycling the catalyst, the utilization rate of the catalyst is improved, and catalyst waste is reduced. Multiple regenerators can further improve the regeneration efficiency of the catalyst and extend its service life. Through catalyst recycling and multi-stage regeneration, the efficiency and economy of photocatalytic reactions are significantly improved, making it suitable for various photocatalytic applications.

[0057] See Figure 1 The figure shows a first regenerator 02 of a cyclic regenerating artificial photosynthesis reaction device according to an exemplary embodiment. The first regenerator 02 includes a feeder 0203 for feeding a catalyst. The feeder 0203 includes a star-shaped discharge valve 0205 for maintaining the seal of the first regenerator 02 while regulating the catalyst flow rate.

[0058] According to some embodiments, see Figure 2 Optionally, the feeder 0203 can be located on top of the first regenerator 02 or one or more second regenerators 06, for feeding fresh catalyst into the circulation of the device, preheating it, and reducing the heat consumption of the reaction gas. The star-shaped discharge valve 0205 can adjust the catalyst feeding amount and rate, enabling precise control of the catalyst feeding amount.

[0059] Figure 3 A schematic diagram of a reactor for a regenerative artificial photosynthesis reaction apparatus according to an example embodiment is shown.

[0060] See Figure 3 The figure shows a reactor 03 of a regenerating artificial photosynthesis reaction device according to an example embodiment. The reactor 03 includes a gas concentration sensor 0305 for measuring the concentration of the gas to be reacted inside the reactor 03.

[0061] According to some embodiments, the gas concentration sensor 0305 is located inside the reactor 03 to monitor the gas concentration in real time. In the regenerative artificial photosynthesis reactor, the gas concentration sensor 0305 is used to monitor the concentration of the gas to be reacted inside the reactor 03 in real time, which helps to ensure that the gas concentration is maintained within the optimal range during the reaction, thereby optimizing the reaction efficiency. The gas concentration sensor 0305 feeds back the monitored gas concentration data to the control system, which can adjust parameters such as the gas intake and reaction conditions based on this data to maintain the optimal reaction environment. By monitoring the gas concentration in real time, any deviations from the set value can be detected and corrected in a timely manner, ensuring the stability and safety of the reaction process. Based on changes in gas concentration, the operating parameters of the reactor 03, such as temperature, pressure, and gas intake rate, can be dynamically adjusted to achieve the best reaction effect.

[0062] According to some embodiments, by precisely controlling the gas concentration, optimal contact between the reactants and the catalyst can be ensured, thereby improving reaction efficiency and yield. Appropriate gas concentrations can reduce catalyst overuse or waste, extend its lifespan, and lower operating costs. Stable gas concentrations help maintain the consistency of the reaction process, thus ensuring the quality and stability of the final product.

[0063] According to some embodiments, real-time monitoring of gas concentration can also help identify potential safety hazards, such as gas leaks or abnormal concentration changes, thereby enabling the implementation of necessary safety measures. In this way, the gas concentration sensor 0305 not only improves the operating efficiency of reactor 03 but also enhances the reliability and safety of the entire system.

[0064] According to some embodiments, the reactor 03 further includes an air inlet pipe 0307 and a porous baffle 0309. The porous baffle is disposed at the lower part of the reactor 03, and the air inlet pipe 0307 is disposed below the porous baffle 0309, so that the gas to be reacted is mixed through the air inlet pipe 0307 and then further uniformly mixed and dispersed in the reactor 03 through the porous baffle.

[0065] According to some embodiments, the design of the inlet pipe 0307 and the porous baffle 0309 in the reactor 03 is to ensure that the gas to be reacted can be uniformly dispersed and fully participate in the photocatalytic reaction. The inlet pipe 0307 is located below the porous baffle 0309 and is used to introduce the gas to be reacted into the reactor 03. The gas to be reacted is introduced into the reactor 03 through the inlet pipe 0307 and is initially mixed. The porous baffle 0309 is located at the bottom of the reactor 03, above the inlet pipe 0307, ​​to further uniformly disperse the gas to be reacted. The small holes on the porous baffle 0309 can uniformly disperse the gas into the reactor 03, ensuring sufficient contact between the gas and the catalyst. The gas to be reacted is introduced into the bottom of the reactor 03 through the inlet pipe 0307. The design of the inlet pipe 0307 allows the gas to be initially mixed upon entering the reactor 03, forming a relatively uniform airflow. When the gas passes through the porous baffle 0309, it is further uniformly dispersed through the small holes on the baffle. The function of the porous baffle 0309 is to evenly distribute the gas throughout the space of reactor 03, ensuring sufficient contact between the gas and the catalyst.

[0066] According to some embodiments, the inlet pipe 0307 is located below the porous baffle 0309, directly introducing gas into the bottom of the reactor 03. The design of the porous baffle 0309 ensures uniform gas dispersion, allowing for sufficient contact between the reactant gas and the catalyst, thereby improving the reaction rate and yield. In this way, the inlet pipe 0307 and the porous baffle 0309 work together to ensure that the reactant gas can be uniformly dispersed and fully participate in the photocatalytic reaction, realizing the cyclic regeneration of the artificial photosynthesis reaction, thereby improving reaction efficiency and product quality.

[0067] According to some embodiments, the air inlet pipe 0307 includes: a first one-way valve 03071, a gas mixer 03072, and a flow rate controller 03073. The flow rate controller 03073 controls the flow rate of one or more of the gases to be reacted, and sends the gases to be reacted into the gas mixer 03072 for preliminary mixing, and then delivers them to the reactor 03 through the one-way valve.

[0068] According to some embodiments, the first one-way valve 03071 is installed in the inlet pipe 0307 to prevent gas backflow, ensuring that the gas can only flow in one direction and guaranteeing that the gas flows in a predetermined direction, preventing the gas in the reactor 03 from flowing back into the inlet system. The gas mixer 03072 is installed before the first one-way valve 03071 to pre-mix multiple gases to be reacted, thereby improving reaction efficiency and uniformity. The flow rate controller 03073 is installed before the gas to be reacted enters the mixer, thereby controlling the flow rate of one or more gases to be reacted, precisely adjusting the gas flow rate according to the reaction requirements, and ensuring optimal reaction conditions. Multiple gases to be reacted enter the flow rate controller 03073 through their respective pipes. The flow rate controller 03073 precisely controls the flow rate of each gas according to set parameters, ensuring that the gas enters the system as needed.

[0069] According to some embodiments, the gas to be reacted enters the gas mixer 03072 after passing through the flow rate controller 03073, where it undergoes preliminary mixing to form a homogeneous gas mixture. The mixed gas then passes through a first one-way valve 03071, which ensures that the gas can only flow in one direction, preventing backflow and ensuring the safety and stability of the system. After passing through the one-way valve, the gas is sent into the reactor 03, where it is further uniformly dispersed through a porous baffle 0309. The uniformly dispersed gas and the catalyst undergo a photocatalytic reaction under the irradiation of the light source 01.

[0070] According to some embodiments, the gas concentration sensor 0305 in reactor 03 monitors the gas concentration in real time and feeds it back to the control system. The control system issues a command to the flow rate controller 03073 to adjust the flow rate of the gas to be reacted, thereby ensuring optimal reaction conditions and improving reaction efficiency.

[0071] According to some embodiments, see Figure 1 as well as Figure 2 The return pipe 04 includes a second one-way valve 0401 and a third one-way valve 0403 arranged sequentially. Nitrogen gas is introduced into the closed pipe between the second one-way valve 0401 and the third one-way valve 0403 to isolate the reaction gas and prevent it from entering the return pipe 04. The second one-way valve 0401 is located at the inlet of the return pipe 04 to prevent gas from the reactor 03 from flowing back into the return pipe 04, ensuring that the catalyst can only flow in one direction and preventing the reaction gas from entering the return pipe 04. The third one-way valve 0403 is located after the second one-way valve 0401 at the outlet of the return pipe 04, ensuring that the catalyst can only flow in one direction and preventing gas from the regenerator from entering the return pipe 04.

[0072] According to some embodiments, a closed pipe is formed between the second one-way valve 0401 and the third one-way valve 0403, through which nitrogen gas can be introduced to further isolate the reaction gases. The nitrogen gas forms an inert gas barrier, preventing the reaction gases from entering the return pipe 04 and ensuring the safe delivery of the catalyst.

[0073] According to some embodiments, the deactivated catalyst enters the return pipe 04 through the settling pipe 0301. The second one-way valve 0401 prevents backflow of gas from reactor 03 into the return pipe 04, ensuring unidirectional catalyst flow. Nitrogen gas is introduced into the closed pipe between the second one-way valve 0401 and the third one-way valve 0403 to form an inert gas barrier, further isolating the reactant gas and preventing it from entering the return pipe 04. The third one-way valve 0403 prevents backflow of gas from the regenerator into the return pipe 04, ensuring unidirectional catalyst flow to the regenerator. Under the protection of nitrogen, the catalyst safely enters the regenerator through the return pipe 04 for regeneration. This design, through the combined action of multi-stage one-way valves and nitrogen isolation, effectively prevents reactant gas from entering the return pipe 04, improving the reliability of catalyst delivery, ensuring system safety, and ensuring efficient catalyst recycling through precise control and isolation.

[0074] Figure 4 A schematic diagram of the first regenerator of a cyclic regenerating artificial photosynthesis reaction device according to an exemplary embodiment is shown.

[0075] See Figure 4 The figure shows a first regenerator 02 of a cyclic regeneration artificial photosynthesis reaction device according to an example embodiment. The first regenerator 02 is also a cavity structure with a porous baffle and a discharge port at the bottom. After the third one-way valve 0403 of the return pipe 04, air is introduced into the return pipe 04 so that the air and catalyst return to the first regenerator 02 along the return pipe 04.

[0076] Figure 5 A schematic diagram of the second regenerator of a cyclic regenerating artificial photosynthesis reaction device according to an example embodiment is shown.

[0077] See Figure 5 The figure shows a second regenerator of a cyclic regeneration artificial photosynthesis reaction device according to an example embodiment. The second regenerator is also a cavity structure, with a porous baffle and a discharge port at the bottom. Optionally, a feeder 0203 and a star-shaped discharge valve 0205 can be provided at the upper part of the second regenerator, so as to maintain the seal of the first regenerator 02 and regulate the catalyst flow rate when the catalyst is added.

[0078] Figure 6A schematic diagram of a cyclone separator for a regenerative artificial photosynthesis reaction apparatus according to an example embodiment is shown.

[0079] See Figure 6 The figure shows a cyclone separator in a regenerative artificial photosynthesis reaction device according to an example embodiment. Cyclone separators are also installed inside the cavities of the first regenerator 02, reactor 03, and second regenerator 06 for periodic cleaning and exhaust gas discharge. The cyclone separators are located inside the cavities of the first regenerator 02, reactor 03, and second regenerator 06, typically at key locations in the gas flow path for efficient particulate matter separation. Gas containing solid particles enters the cyclone separator, where it flows at high speed, generating strong centrifugal force. Due to their large mass, the solid particles are thrown against the separator wall by centrifugal force and slide down the wall into the bottom collector. The separated clean gas exits from the top of the cyclone separator and enters a subsequent treatment or emission system. Separated solid particles, such as deactivated catalyst, are collected in the collector at the bottom of the cyclone separator. Opening the collector allows the separated particles to be discharged for treatment or recycling. In this device, the operation of the cyclone separator can be controlled by a detection device installed inside the cavity and a control system based on the obtained solid particle monitoring data. Alternatively, it can be selected to operate periodically according to the actual scenario and application requirements to meet the device's operational requirements in that scenario. This design improves the system's cleanliness and operational efficiency, while also ensuring compliance and safety of exhaust gas emissions.

[0080] Figure 7 A schematic diagram of the check valve of a regenerative artificial photosynthesis reaction device according to an example embodiment is shown.

[0081] See Figure 7 The figure shows a check valve 07 of a regenerating artificial photosynthesis reaction device according to an example embodiment. The check valve 07 is used to feed the catalyst activated in the first regenerator 02 into the reactor 03 or the second regenerator 06. Multiple vacuum chambers are provided inside the check valve 07. Vacuum is drawn from the top of the pipe and an online fluid concentration detection device 0701 is provided. Nitrogen is purged at the bottom. When the fluid concentration in each vacuum chamber reaches the standard, it enters the next vacuum chamber through a one-way valve until the fluid concentration in the last vacuum chamber reaches the standard and then enters the reactor 03 or the regenerator.

[0082] The following example illustrates the industrial production of methanol:

[0083] The reaction equation designed for industrial methanol production:

[0084] CO + 2H₂ → CH₃OH, ΔH 298K= -90.6 kJ / mol

[0085] CO2 + 3H2 → CH3OH + H2O, ΔH 298K = -49.5 kJ / mol

[0086] CO2 + H2 → CO + H2, ΔH 298K = 41.2 kJ / mol

[0087] Methanol production using the regenerative artificial photosynthesis reactor described above, see [link to relevant documentation]. Figure 2 The apparatus shown includes a reactor 03 for thorough mixing of the catalyst and reactant gases CO2 and H2, increasing their contact area. A cyclone separator is installed at the top inside the reactor 03 for gas-solid separation and to discharge the product CH3OH. The solid catalyst circulates within the apparatus. The reactant gases CO2 and H2 enter the reactor 03 through the bottom inlet pipe 0307 and are dispersed by a porous baffle before entering the internal fluidized zone of the reactor 03 to mix uniformly with the catalyst for reaction. Optionally, an H2 concentration detection device 10 can be installed in the fluidized zone to monitor the H2 concentration in real time, and the H2 flow rate can be dynamically adjusted by a control system linked to the H2 dynamic intake device in the inlet pipe 0307. A fused silica glass light-transmitting window 0303 is installed on the side wall of the reactor 03 as a light source window 0303, allowing the light source to shine into the reactor 03 through the light source window 0303, achieving photocatalysis. Since the deactivated catalyst itself has poor fluidization performance and will agglomerate, it will settle to the bottom due to gravity. Therefore, a settling pipe 0301 is provided at the bottom of the reactor 03, and the settling pipe 0301 is directly connected to the return pipe 04.

[0088] The first regenerator 02 uses air as the reactant gas. Air enters the first regenerator 02 from the bottom through the return port and is then evenly distributed by a porous baffle. Inside the first regenerator 02, high temperatures remove carbon deposits and other impurities from the surface of the deactivated catalyst. Generally, the temperature and pressure in the first regenerator 02 are higher than in the reactor 03; this pressure difference prevents gas from the reactor 03 from flowing back into the first regenerator 02. A discharge port is located at the bottom of the first regenerator 02, equipped with a one-way valve to prevent backflow. Because the deactivated catalyst has poor fluidization properties and agglomerates, it settles to the bottom due to gravity and is discharged through the discharge port. A cyclone separator is located at the top of the first regenerator 02 for gas-solid separation to discharge waste gas and separate the oxidation-activated catalyst. The separated catalyst continues to participate in the internal catalyst cycle of the unit.

[0089] Specifically, in the second regenerator 06, H2 is used as the reaction gas. The second regenerator 06 is used for the reduction and reactivation of the deactivated catalyst and the preheating of the catalyst added to the unit. H2 is introduced into the second regenerator 06 from a higher position at the bottom and is uniformly distributed by a porous baffle. Similarly, a discharge port is provided at the bottom of the second regenerator 06 to discharge the deactivated catalyst, and a one-way valve is installed at the discharge port to prevent backflow of gas. A feeder 0203 is located at the top of the second regenerator 06 for adding new catalyst. The feeder 0203 is equipped with a star-shaped discharge valve 0205, which can adjust the catalyst flow rate and ensure a seal, reducing the energy consumption from preheating the catalyst. A cyclone separator is installed inside the top of the second regenerator 06 for periodic cleaning and exhaust gas discharge.

[0090] The return pipe 04 is used to transfer the deactivated catalyst from reactor 03 to the first regenerator 02. The return pipe 04 connects the settling pipe 0301 of reactor 03 to the bottom of the first regenerator 02. A second one-way valve 0401 and a third one-way valve 0403 are installed at the connection between the settling pipe 0301 and the return pipe 04. Rapid N2 (flow rate faster than the reactant gas flow rate) is introduced between the second one-way valve 0401 and the third one-way valve 0403 to form an N2 gas curtain, isolating the reactant gas and air and preventing the reactant gas from flowing back into the return pipe 04. A throttling valve is installed at the bottom of the return pipe 04, and rapid air (flow rate faster than N2) is introduced to prevent gas backflow, allowing the air to carry the catalyst into the first regenerator 02.

[0091] The check valve 07 is used to feed the catalyst, after oxidation and activation in the first regenerator 02, into the second regenerator 06. The check valve 07 is inclined upwards and connects to the top of the second regenerator 06. To ensure the O2 concentration meets the standard, multiple vacuum chambers are installed inside the check valve 07. Vacuum is drawn from the top of the pipe, and an online O2 concentration detection device is installed. Purge gas N2 is provided at the bottom. When the O2 concentration in each vacuum chamber reaches the standard, it passes through a one-way valve to the next vacuum chamber, until the O2 concentration reaches the standard again, at which point it enters the H2 regenerator.

[0092] The riser 05 is used to feed the H2-reduced and revitalized catalyst, as well as the preheated new catalyst, into the reactor 03. The riser 05 is inclined upwards and connected to the top of the reactor 03. A one-way valve is installed on the riser 05 to prevent gas backflow.

[0093] According to some embodiments, the design scheme of the present invention can be used in the design of a fluidized bed photocatalytic reaction system for catalyst recycling. The system includes the regenerated artificial photosynthesis reaction device described above, which improves the reliability of catalyst delivery in the fluidized bed catalytic reaction system and ensures system safety. Through precise control and isolation, efficient catalyst recycling is ensured, realizing the regeneration of the artificial photosynthesis reaction, reducing production costs, and improving reaction efficiency and product quality.

[0094] According to some embodiments, the design of this invention improves catalyst utilization, reduces catalyst waste and disposal, and lowers environmental impact through catalyst recycling. Multiple regenerators can further improve catalyst regeneration efficiency and extend catalyst lifespan. Through catalyst recycling and multi-stage regeneration, the efficiency and economy of photocatalytic reactions are significantly improved, making it suitable for various photocatalytic applications.

[0095] According to some embodiments, the device of this invention allows for thorough mixing of the catalyst and reactant gas, increasing their contact area. Cyclone separators are installed inside the reactor, the first regenerator, and the second regenerator for gas-solid separation, enabling continuous industrial preparation operations and improving production efficiency. Through the recycling and regeneration of the catalyst, the efficiency and economy of the photocatalytic reaction are significantly improved, making it suitable for various photocatalytic applications.

[0096] In this specification, “unit” and “module” refer to software and / or hardware that can independently or in conjunction with other components perform a specific function. The hardware may be, for example, a field-programmable gate array (FPGA), an integrated circuit, etc.

[0097] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, because according to the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0098] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0099] In the several embodiments provided by this utility model, it should be understood that the disclosed apparatus can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some service interface; the indirect coupling or communication connection between devices or units may be electrical or other forms.

[0100] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0101] In addition, the functional units in the various embodiments of this utility model can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0102] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0103] Exemplary embodiments of the present invention have been specifically shown and described above. It should be understood that the present invention is not limited to the detailed structures, arrangements, or implementation methods described herein; rather, the present invention is intended to cover various modifications and equivalent arrangements contained within the spirit and scope of the appended provisions.

Claims

1. A cyclic regenerative artificial photosynthesis reaction device, characterized by, include: Light source, first regenerator, reactor, return pipe, riser, among which, The light source is used to provide photocatalytic light driving force for chemical reactions; The first regenerator has a cavity structure, and a discharge port is provided at the bottom of the first regenerator for collecting the deactivated catalyst and discharging it out. The riser is located on the upper part of the first regenerator and is used to connect the first regenerator and the reactor. The reactor is a cavity structure that provides a closed space for chemical reactions. A light source window is provided on the side of the cavity structure so that the light emitted by the light source can pass through the light source window to illuminate the cavity for catalytic reaction. A settling pipe is provided at the bottom of the reactor and is connected to the return pipe through the settling pipe. The return pipe is used to connect the reactor to the lower part of the first regenerator, and simultaneously transfers the deactivated catalyst collected by the reactor to the first regenerator and inputs air into the first regenerator.

2. The cyclic regenerative artificial photosynthesis reaction device according to claim 1, wherein, The device further includes: one or more second regenerators and a check valve connecting pipe, wherein... The single or multiple second regenerators are connected via the check valve, and the single or multiple second regenerators are connected to the reactor via the riser.

3. The cyclic regenerative artificial photosynthesis reaction apparatus according to claim 1, wherein The first regenerator includes a feeder for adding the catalyst.

4. The cyclic regenerative artificial photosynthesis reaction device according to claim 3, wherein The feeder includes a star-shaped discharge valve, used to maintain the seal of the first regenerator while regulating the catalyst flow rate.

5. The cyclic-regenerative artificial photosynthesis reaction apparatus according to claim 1, wherein The reactor includes a gas concentration sensor for measuring the concentration of the gas to be reacted inside the reactor.

6. The cyclic-regenerative artificial photosynthesis reaction apparatus according to claim 1, wherein The reactor further includes an air inlet pipe and a porous baffle. The porous baffle is disposed at the lower part of the reactor, and the air inlet pipe is disposed below the porous baffle, so that the gas to be reacted is mixed through the air inlet pipe and then further mixed evenly and dispersed in the reactor through the porous baffle.

7. The cyclic regenerative artificial photosynthesis reaction device according to claim 6, wherein, The intake pipe includes: The first one-way valve, the gas mixer, and the flow rate controller control the flow rate of one or more of the gases to be reacted, and send the gases to be reacted into the gas mixer for preliminary mixing, and then deliver them to the reactor through the one-way valve.

8. The cyclic-regenerative artificial photosynthesis reaction apparatus according to claim 1, wherein The return pipe includes a second one-way valve and a third one-way valve arranged in sequence, and nitrogen gas is introduced into the closed pipe between the second one-way valve and the third one-way valve to isolate the reaction gas and prevent the reaction gas from entering the return pipe.

9. The cyclic-regenerative artificial photosynthesis reaction apparatus according to claim 1 or 2, characterized by, Cyclone separators are also installed inside the chambers of the first regenerator, the reactor, and the second regenerator for periodic cleaning and exhaust gas discharge.

10. A fluidized bed photocatalytic reaction system with catalyst recycling, characterized in that, The system includes a cyclic regeneration artificial photosynthesis reaction device as described in any one of claims 1-9 above.

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