A flow type microwave desorption CO2 gas fertilizer machine device

Abstract

The utility model discloses a kind of flow type microwave desorption CO2 gas fertilizer machine device, the device includes sequentially connected adsorption unit, desorption regeneration unit and circulating conveying unit;Adsorption unit passes through material dryer, utilizes hot air drying to promote granular wet adsorption material to adsorb CO2 in air;Desorption regeneration unit is in greenhouse through water spraying humidification and microwave heating synergistic effect, quickly desorbs CO2, and by exhaust fan high concentration CO2 is released to big shed;Circulating conveying unit realizes the automatic circulation and reuse of adsorption material by conveyor belt, inclined plate and storage bin.The utility model device realizes the continuous operation of CO2 adsorption and desorption, can provide stable, efficient carbon dioxide gas fertilizer for greenhouse, effectively promote crop growth.

Description

Technical Field

[0001] This utility model relates to the field of CO2 fertilizer application technology in greenhouses, specifically to a mobile microwave desorption CO2 fertilizer machine device. Background Technology

[0002] In agricultural facilities, greenhouses significantly improve crop yield and quality through precise control of environmental factors. Carbon dioxide (CO2), a key substance for photosynthesis, directly affects crop photosynthetic efficiency. Studies have shown that increasing the CO2 concentration in greenhouses to an enrichment level of 800-1200 ppm can significantly promote crop growth and increase yield. However, the CO2 concentration in the natural environment is typically only around 400 ppm, which is insufficient to meet the optimal growth requirements of crops. Therefore, artificially applying CO2 fertilization has become one of the core technologies for high-yield cultivation in modern greenhouses.

[0003] Currently, the commonly used CO2 fertilizer application techniques in practice mainly include the following methods: 1. Chemical reaction method: This method typically involves reacting acids with carbonates to produce CO2. However, this method is cumbersome, carries the risk of corrosive raw material storage, and is costly.

[0004] 2. Combustion method: CO2 is produced by burning natural gas. This method requires laying natural gas pipelines to the greenhouse, and if combustion is incomplete, it will also produce harmful gases such as CO, posing a safety threat to crops and people.

[0005] 3. Direct release of liquid CO2: Although it can provide pure CO2, it depends on external gas supply and high-pressure storage and transportation equipment, requires large infrastructure investment, and the gas supply security in the vast rural areas of my country is low, making it difficult to popularize and apply.

[0006] In summary, existing technologies generally suffer from high costs, safety risks, or the inability to achieve a stable and continuous CO2 supply. More importantly, existing technologies lack a "capture-release" recycling design for CO2 in the surrounding air of greenhouses, failing to form a low-energy-consumption, sustainable closed-loop solution. Therefore, there is an urgent need in this field for a novel gas fertilizer application device that can achieve continuous, stable, efficient, and low-cost self-supply of CO2. Summary of the Invention

[0007] The purpose of this invention is to provide a mobile microwave desorption CO2 fertilizer generator to solve the problems of high cost, high safety risks, or inability to achieve continuous and stable gas supply in existing CO2 fertilizer application technologies.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A flow-type microwave desorption CO2 fertilizer generator is based on a closed-loop system integrating adsorption, desorption, and flow circulation. The device captures CO2 from the air through an adsorption unit, then rapidly releases high-concentration CO2 within a greenhouse via a desorption and regeneration unit. Finally, a circulation conveying unit returns the humidified adsorption material to the adsorption unit, thus achieving continuous and automated production and supply of CO2 fertilizer.

[0009] The adsorption unit includes a material dryer chamber 1, with a material dryer inlet 2 at the bottom and a perforated air outlet plate 10 at the top. A hot air blower 9 is located on the side, blowing hot air into the chamber to dry the granular, moistened adsorption material 3 and adsorb CO2 from the air. An inner material dryer cylinder 6-1 is coaxially arranged inside the material dryer chamber 1. A first spiral shaft 4-1 driven by a first motor 5-1 is located inside the inner material dryer cylinder 6-1. A return port 7 is located at the top of the inner material dryer cylinder 6-1, and a return port valve 8 is located on the return port 7. A material dryer outlet 11 extending into the greenhouse 22 is connected to the top of the inner material dryer cylinder 6-1.

[0010] The adsorption unit, through the cooperation of the return port 7 and the return port valve 8, realizes the switching between the internal circulation of the adsorbent material in the material dryer chamber 1 and the external circulation in the entire device; when the return port valve 8 is open, the adsorbent material circulates in the chamber and adsorbs CO2 while being fully dried by hot air; when the return port valve 8 is closed, the adsorbent material flows out from the material dryer outlet 11 and enters the external circulation of the entire device.

[0011] The desorption and regeneration unit is located inside the greenhouse 22 and includes a conveyor belt 18, and a funnel 12, a water spray device 13, a microwave drying chamber 15, and an exhaust fan 17 arranged sequentially along the conveying direction of the conveyor belt 18. The funnel 12 is located below the material dryer outlet 11. Microwave suppressors 14 are provided on both sides of the microwave drying chamber 15, and multiple microwave generators 16 are embedded in the top of the microwave drying chamber 15. The air inlet of the exhaust fan 17 is connected to the inside of the microwave drying chamber 15, and its air outlet is located inside the greenhouse 22.

[0012] The desorption and regeneration unit greatly accelerates the desorption rate of CO2 through the synergistic effect of "humidification followed by microwave heating". The high concentration of desorbed CO2 is directly discharged into the greenhouse environment by the exhaust fan 17.

[0013] The circulating conveying unit includes an inclined plate 19 and a storage bin 20; the inclined plate 19 is located below the end of the conveyor belt 18; the storage bin 20 is located below the end of the inclined plate 19, and a storage bin inner cylinder 6-2 is coaxially arranged inside the storage bin 20. The storage bin inner cylinder 6-2 is provided with a second spiral shaft 4-2 driven by a second motor 5-2. The top of the storage bin inner cylinder 6-2 is connected to a storage bin outlet 21, which extends to the outside of the greenhouse 22 and is located above the material dryer inlet 2.

[0014] The circulating conveying unit is used to collect the desorbed moistened adsorbent material 3 and transport it back to the adsorption unit, thereby completing the recycling of the moistened adsorbent material 3.

[0015] Preferably, the water spraying device 13 is located between the funnel 12 and the microwave drying cavity 15, and is used to spray water mist onto the wetted adsorbent material 3 on the conveyor belt 18.

[0016] Preferably, the bottom of the material dryer chamber 1 and the storage chamber 20 is an inverted truncated pyramid structure, which facilitates the humidified adsorbent material 3 to fall onto the first spiral shaft 4-1 and the second spiral shaft 4-2 at the bottom of the chamber, so that it can be driven upward by the spiral shaft.

[0017] Preferably, the humidified adsorbent 3 used in the device is a granular material, which facilitates circulation within the device.

[0018] Compared with the prior art, the beneficial effects of this utility model are: 1. Significantly improves the stability and continuity of CO2 fertilizer application. This invention achieves seamless switching and continuous flow of the adsorbent material between the "adsorption" and "desorption" states through a conveyor belt, inclined plate, and spiral conveying mechanism, enabling the provision of a continuous and stable concentration of CO2 fertilizer for greenhouses.

[0019] 2. Significantly improves CO2 desorption efficiency and speed. This invention innovatively combines two desorption methods: water spray humidification and microwave heating. Humidification first weakens the binding force between CO2 and the humidified adsorbent material, and then the bulk heating characteristics of microwaves can quickly provide energy to the entire humidified adsorbent material. The synergistic effect of these two methods significantly accelerates the desorption process, thereby rapidly meeting the large demand for CO2 during the peak photosynthetic period of crops.

[0020] 3. This ensures efficient CO2 adsorption and the material's recirculation performance. In the adsorption unit, the hot air provided by the inlet hot air blower not only dries the humidified adsorbent material but also serves as a CO2-rich gas source. Combined with the internal circulation mechanism formed by the spiral shaft lifting and return port, this significantly increases the contact time and efficiency between the humidified adsorbent material and the airflow, ensuring that the humidified adsorbent material is fully saturated with adsorption before entering the desorption unit, thus laying the foundation for efficient desorption. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the device of this utility model. Detailed Implementation

[0022] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. This description is intended to enable those skilled in the art to understand and implement this utility model, and is not intended to limit the scope of protection of this utility model.

[0023] The core of the mobile microwave desorption CO2 fertilizer generator provided by this utility model lies in the coordinated operation of the adsorption unit, the desorption and regeneration unit and the circulation and conveying unit to achieve continuous circulation of the humidified adsorption material and stable supply of CO2 fertilizer.

[0024] like Figure 1 As shown, this utility model provides a flow-type microwave desorption CO2 fertilizer generator, mainly comprising the following components: a material dryer chamber 1, a material dryer inlet 2, a humidified adsorption material 3, a first spiral shaft 4-1, a second spiral shaft 4-2, a first motor 5-1, a second motor 5-2, a material dryer inner cylinder 6-1, a storage silo inner cylinder 6-2, a return port 7, a return port valve 8, an inlet hot air fan 9, a chamber outlet perforated plate 10, a material dryer outlet 11, a funnel 12, a water spray device 13, a microwave suppressor 14, a microwave drying chamber 15, a microwave generator 16, an exhaust fan 17, a conveyor belt 18, an inclined plate 19, a storage silo 20, and a storage silo outlet 21. Part of the device is installed inside a greenhouse 22.

[0025] The connections and positional relationships of the components are as follows: Adsorption unit: The bottom of the material dryer chamber 1 is connected to the material dryer inlet 2; the inlet hot air fan 9 is fixed on the outside of the material dryer chamber 1, and its air outlet leads to the inside of the material dryer chamber 1; the top of the material dryer chamber 1 is a chamber outlet perforated plate 10; the material dryer inner cylinder 6-1 is coaxially arranged inside the material dryer chamber 1, the first spiral shaft 4-1 is placed in the material dryer inner cylinder 6-1 and driven by the first motor 5-1; the material dryer inner cylinder 6-1 is provided with a return port 7 at the top, and a return port valve 8 is installed on it; the material dryer outlet 11 is connected to the top of the material dryer inner cylinder 6-1 and extends into the greenhouse 22.

[0026] Desorption and regeneration unit: Above the conveyor belt 18, a funnel 12, a water spray device 13, and a microwave drying chamber 15 are fixed in sequence along the conveying direction; the funnel 12 is directly below the material dryer outlet 11; microwave suppressors 14 for preventing microwave energy leakage are installed at both ends of the microwave drying chamber 15, and multiple microwave generators 16 are embedded in the top of the microwave drying chamber 15; the air inlet of the exhaust fan 17 is connected to the top of the microwave drying chamber 15, and the air outlet is located inside the greenhouse 22.

[0027] Circulating conveying unit: The inclined plate 19 is placed below the end of the conveyor belt 18; the storage bin 20 is placed below the end of the inclined plate 19; the inner cylinder 6-2 of the storage bin is coaxially arranged inside the storage bin 20, the second spiral shaft 4-2 is placed therein and driven by the second motor 5-2; the discharge port 21 of the storage bin is connected to the top of the inner cylinder 6-2 of the storage bin, and its outlet extends to the outside of the greenhouse 22 and is located above the material dryer inlet 2.

[0028] In a preferred embodiment of the present invention, the bottom of the material dryer chamber 1 and the storage silo 20 adopts an inverted frustum structure, which facilitates the material to be collected onto the first spiral shaft 4-1 and the second spiral shaft 4-2 respectively.

[0029] In a preferred embodiment of this utility model, the variable moisture adsorption material 3 is a granular material, which facilitates circulation in the device.

[0030] The working process of this utility model device is clearly divided into two stages: CO2 adsorption and CO2 desorption and supply, as detailed below: 1. CO2 adsorption stage Initial state: All equipment is off, and the granular, humidified adsorbent material 3 is stored in the storage silo 20.

[0031] Start the circulation and adsorption: Start the second motor 5-2, the first motor 5-1 and the inlet hot air blower 9 in sequence, and open the return port valve 8.

[0032] Material flow path: The humidified adsorbent material 3 in the storage bin 20 is lifted by the second spiral shaft 4-2 and enters the bottom of the material dryer chamber 1 through the storage bin outlet 21 and the material dryer inlet 2; then, the humidified adsorbent material 3 is conveyed upward by the first spiral shaft 4-1, and after reaching the top, it slides back to the bottom of the material dryer chamber 1 through the opened return port 7, thus forming a circulating flow in the material dryer chamber 1; after the humidified adsorbent material 3 in the storage bin 20 is conveyed, the second motor 5-2 is turned off.

[0033] Adsorption process: During this cycle, the intake hot air blower 9 continuously supplies hot air into the chamber. On the one hand, the hot air dries the humidified adsorption material 3, restoring its adsorption capacity; on the other hand, the CO2 contained in the hot air is largely captured by the humidified adsorption material 3; finally, the humid exhaust gas is discharged through the perforated exhaust plate 10 at the top of the chamber; this stage continues until the humidified adsorption material 3 is close to adsorption saturation, at which point the intake hot air blower 9 is turned off.

[0034] 2. CO2 Desorption and Supply Stage Switching modes: Close the return port valve 8, and start the conveyor belt 18, water spray device 13, microwave generator 16 and exhaust fan 17 in sequence.

[0035] Material flow path: The wetted adsorbent material 3 is continuously lifted by the first spiral shaft 4-1, and falls evenly onto the conveyor belt 18 through the material dryer outlet 11 and the funnel 12.

[0036] Desorption process: The conveyor belt 18 first transports the humidified adsorbent material 3 to the area below the water spraying device 13. The water spraying device 13 sprays water mist onto the humidified adsorbent material 3 on the conveyor belt 18, and the humidified adsorbent material 3 is evenly wetted. Subsequently, the moistened humidified adsorbent material 3 enters the microwave drying chamber 15, and is rapidly heated as a whole under the irradiation of the microwave generator 16. The CO2 desorption rate is accelerated, and a large amount of CO2 gas is released from the material.

[0037] Gas supply and material recovery: The high-concentration CO2 desorbed is promptly drawn into the greenhouse 22 by the exhaust fan 17 and directly discharged into the greenhouse 22 for crop use; the desorbed and regenerated wet adsorbent material 3 moves to the end of the conveyor belt 18, falls onto the inclined plate 19 under gravity, and finally slides back into the storage bin 20; after being temporarily stored in the storage bin 20, the wet adsorbent material 3 can re-enter the next round of "adsorption-desorption" cycle to achieve a continuous and uninterrupted supply of gas fertilizer.

[0038] After the application of gas fertilizer is completed, and all the wetted adsorbent material 3 in the device has fallen back into the storage silo 20, all equipment is shut down.

[0039] The above embodiments are merely preferred implementations of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, and improvements made by those skilled in the art within the principles and spirit of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A mobile microwave desorption CO2 fertilizer generator, characterized in that, It includes an adsorption unit, a desorption and regeneration unit, and a circulation and conveying unit connected in sequence; The adsorption unit includes a material dryer chamber (1), a material dryer inlet (2) at the bottom of the material dryer chamber (1), a chamber outlet perforated plate (10) at the top, and an air inlet hot air blower (9) on the side to blow hot air into the chamber and use the hot air to dry the granular humidified adsorbent material (3) to adsorb CO2 in the air; a material dryer inner cylinder (6-1) is coaxially arranged inside the material dryer chamber (1), a first spiral shaft (4-1) driven by a first motor (5-1) is provided inside the material dryer inner cylinder (6-1), a return port (7) is provided at the top of the material dryer inner cylinder (6-1), a return port valve (8) is provided on the return port (7), and a material dryer outlet (11) extending into the greenhouse (22) is connected to the top of the material dryer inner cylinder (6-1); The desorption and regeneration unit is located inside the greenhouse (22) and includes a conveyor belt (18), and a funnel (12), a water spray device (13), a microwave drying chamber (15), and an exhaust fan (17) arranged sequentially along the conveying direction of the conveyor belt (18); the funnel (12) is located below the discharge port (11) of the material dryer; microwave suppressors (14) are provided on both sides of the microwave drying chamber (15), and multiple microwave generators (16) are embedded in the top of the microwave drying chamber (15); the air inlet of the exhaust fan (17) is connected to the inside of the microwave drying chamber (15), and its air outlet is located inside the greenhouse (22); The circulating conveying unit includes an inclined plate (19) and a storage bin (20); the inclined plate (19) is located below the end of the conveyor belt (18); the storage bin (20) is located below the end of the inclined plate (19), and a storage bin inner cylinder (6-2) is coaxially arranged inside the storage bin (20). A second spiral shaft (4-2) driven by a second motor (5-2) is provided inside the storage bin inner cylinder (6-2). The top of the storage bin inner cylinder (6-2) is connected to a storage bin outlet (21), and the storage bin outlet (21) extends to the outside of the greenhouse (22) and is located above the material dryer inlet (2).

2. The apparatus according to claim 1, characterized in that, The water spraying device (13) is located between the funnel (12) and the microwave drying cavity (15) and is used to spray water mist onto the wetted adsorbent material (3) on the conveyor belt (18).

3. The apparatus according to claim 1, characterized in that, The bottom of the material dryer chamber (1) and the storage silo (20) are truncated pyramidal structures.

4. The apparatus according to any one of claims 1 to 3, characterized in that, The humidified adsorbent material (3) used in the device for circulating flow is a granular material.

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