A system and method for providing crop gas fertilizer using new energy sources

Abstract

This invention belongs to the field of carbon capture device technology and proposes a system and method for providing gaseous fertilizer to crops using new energy sources. The system includes interconnected new energy power generation equipment, an induced draft fan, a CO2 capture tank, a CO2 storage tank, and a gaseous fertilizer supply device. A first server is connected to the compressor and a CO2 concentration sensor; a second server is connected to the compressor and a mixing chamber. The first server controls the CO2 concentration in the CO2 storage tank by adjusting the opening degree of the induced draft fan. The second server controls the output flow rate of the compressor and the air inlet flow rate of the mixing chamber based on the CO2 concentration in the CO2 storage tank and the CO2 concentration required by the crops. This invention considers the influence of the induced draft fan opening degree on the CO2 concentration in the CO2 storage tank, as well as the influence of the CO2 concentration in the CO2 storage tank and the CO2 concentration in the air on the supply of gaseous fertilizer to crops. It can provide crops with appropriate concentrations of CO2 fertilizer according to different crop types.

Description

Technical Field

[0001] This invention belongs to the field of carbon capture technology, and in particular relates to a system and method for providing crop gas fertilizer using new energy sources. Background Technology

[0002] By powering the CO2 capture system with new energy power generation equipment and providing gas fertilizer for crops, the secondary pollution problems caused by traditional fossil energy power generation can be avoided, and the system can be operated continuously and without interruption.

[0003] Currently, carbon capture systems, including new energy power generation equipment, CO2 adsorption-thermal regeneration reactors, CO2 storage tanks, greenhouse CO2 distribution devices, and pipeline valves, can realize the entire process from capture to crop nutrient supply. However, these systems do not consider the impact of the induced draft fan opening on the CO2 concentration in the CO2 storage tank, nor do they consider the impact of the CO2 concentration in the CO2 storage tank and the CO2 concentration in the air on the amount of nutrient supplied to crops. Therefore, they cannot provide suitable nutrient for crops. Furthermore, the CO2 captured by the current CO2 capture system can only provide nutrient for crop photosynthesis, which is a single function. For example, it cannot provide growth for crop roots. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes a system and method for providing gaseous fertilizer to crops using new energy sources. A first server controls the CO2 concentration in a CO2 storage tank by adjusting the opening of the induced draft fan. A second server controls the output flow rate of the compressor and the air inflow rate into the mixing chamber based on the CO2 concentration in the CO2 storage tank and the CO2 concentration required by the crops. By considering the influence of the induced draft fan opening on the CO2 concentration in the CO2 storage tank, as well as the influence of the CO2 concentration in the CO2 storage tank and the CO2 concentration in the air on the supply of gaseous fertilizer to crops, this invention can provide crops with appropriate concentrations of CO2 fertilizer according to different crop types.

[0005] To achieve the above objectives, in a first aspect, the present invention provides a crop gas fertilizer supply system driven by new energy sources, employing the following technical solution:

[0006] A crop gas fertilizer supply system driven by new energy sources includes interconnected new energy power generation equipment, a draft fan, a CO2 capture tank, a CO2 storage tank, and gas fertilizer supply equipment;

[0007] A compressor and a mixing chamber are provided between the CO2 storage tank and the gas fertilizer supply equipment; a CO2 concentration sensor is provided at the CO2 storage tank; the compressor and the CO2 concentration sensor are connected to a first server; the compressor and the mixing chamber are connected to a second server; the first server and the second server are connected.

[0008] The first server is used to control the concentration of CO2 in the CO2 storage tank by adjusting the opening degree of the induced draft fan; the second server is used to control the output flow rate of the compressor and the air inlet flow rate of the mixing chamber according to the concentration of CO2 in the CO2 storage tank and the CO2 concentration required by the crops.

[0009] Furthermore, the new energy power generation equipment includes wind turbine power generation equipment and solar power generation equipment, and the wind turbine power generation equipment and the solar power generation equipment are connected to battery packs.

[0010] Furthermore, a purification chamber is provided between the induced draft fan and the CO2 collection tank.

[0011] Furthermore, the carbon capture material inside the CO2 capture tank is a solid amine adsorbent.

[0012] Furthermore, an air valve is provided on the mixing chamber, and the air valve is connected to the second server.

[0013] Furthermore, the gas fertilizer supply device includes a leaf CO2 release mechanism and a root CO2 release mechanism.

[0014] Furthermore, the blade CO2 release mechanism includes a support and a nozzle disposed on the support, the support being a telescopic rod; the root CO2 release mechanism includes an air outlet and barbs disposed near the air outlet.

[0015] To achieve the above objectives, in a second aspect, the present invention also provides a method for providing crop gas fertilizer driven by new energy sources, employing the following technical solution:

[0016] A method for providing crop gas fertilizer using a new energy source, comprising: a crop gas fertilizer providing system using a new energy source as described in the first aspect, including:

[0017] The concentration of CO2 in the CO2 storage tank is controlled by adjusting the opening degree of the induced draft fan; the output flow rate of the compressor and the air inlet flow rate of the mixing chamber are controlled according to the concentration of CO2 in the CO2 storage tank and the CO2 concentration required by the crops.

[0018] Furthermore, the CO2 concentration in the CO2 storage tank for:

[0019]

[0020]

[0021] in, This represents the total volume of CO2 released during the desorption process. tThis refers to the adsorbent desorption time. V sp Mass airspeed; M For the mass of the adsorbent; This is the function corresponding to the CO2 desorption curve; for CO2 desorption concentration at time; Set the total flow rate of the induced draft fan; For opening degree.

[0022] Furthermore, the algorithm for adjusting the compressor output flow and air pump output flow is as follows:

[0023]

[0024] in, V2 represents the CO2 concentration in the CO2 storage tank; V3 represents the compressor flow rate. This refers to the CO2 concentration in the air. This refers to the air pump flow rate. This represents the CO2 concentration after gas mixing. This refers to the flow rate after gas mixing.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] In this invention, a first server is connected to the compressor and the CO2 concentration sensor; a second server is connected to the compressor and the mixing chamber. The first server is used to control the CO2 concentration in the CO2 storage tank by adjusting the opening degree of the induced draft fan. The second server is used to control the output flow rate of the compressor and the air inlet flow rate of the mixing chamber according to the CO2 concentration in the CO2 storage tank and the CO2 concentration required by the crops. By considering the influence of the induced draft fan opening degree on the CO2 concentration in the CO2 storage tank, as well as the influence of the CO2 concentration in the CO2 storage tank and the CO2 concentration in the air on the supply of gaseous fertilizer to crops, it is possible to provide crops with appropriate concentrations of CO2 gaseous fertilizer according to different crop types.

[0027] The CO2-providing device of this invention includes a leaf CO2 release mechanism and a root CO2 release mechanism. The leaf CO2 release mechanism includes a support and a nozzle mounted on the support. The support is a telescopic rod that can be flexibly adjusted according to the growth of the crop. The root CO2 release mechanism includes an air outlet and barbs located near the air outlet. The barbs ensure that the air outlet is not blocked by the soil, allowing CO2 to dredge the soil around the plant roots, increase aeration, increase the inorganic carbon source in the soil, and improve the organic matter content. Attached Figure Description

[0028] The accompanying drawings, which form part of this embodiment, are used to provide a further understanding of this embodiment. The illustrative embodiments and their descriptions are used to explain this embodiment and do not constitute an improper limitation of this embodiment.

[0029] Figure 1 This is a schematic diagram of the system structure of Embodiment 1 of the present invention;

[0030] Figure 2 This is a schematic diagram of the CO2 capture tank in Embodiment 1 of the present invention;

[0031] Figure 3 This is a schematic diagram of the gas mixing chamber in Embodiment 1 of the present invention;

[0032] Figure 4 This is the equipment for providing gas fertilizer according to Embodiment 1 of the present invention;

[0033] Figure 5 This is the blade CO2 release mechanism of Embodiment 1 of the present invention;

[0034] Figure 6 This is the root CO release mechanism of Embodiment 1 of the present invention;

[0035] Figure 7 The adsorption curve of 30% TEPA / X-5 solid amine under the influence of CO2 concentration in Example 1 of this invention;

[0036] Figure 8 This is the adsorption curve of 30% TEPA / X-5 solid amine under the influence of adsorption temperature in Example 1 of the present invention;

[0037] Figure 9 The desorption curve of 30% TEPA / X-5 solid amine under dry conditions in Example 1 of this invention;

[0038] Figure 10 The desorption curve of 30% TEPA / X-5 solid amine at 100% relative humidity in Example 1 of this invention;

[0039] Figure 11 The CO2 direct air capture cycle performance of 30% TEPA / X-5 solid amine in Example 1 of this invention;

[0040] Figure 12 This is a flowchart of CO2 adsorption and desorption in Example 1 of the present invention;

[0041] Figure 13 A process flow diagram is provided for the gas fertilizer of Embodiment 1 of the present invention;

[0042] The components include: 1. New energy power generation equipment; 101. Wind turbine power generation equipment; 102. Solar power generation equipment; 2. Battery pack; 3. Exhaust fan; 4. Clean room; 5. CO2 collection tank; 501. Graphite positive electrode; 502. Graphite negative electrode; 503. Nickel foam gasket; 6. First server; 7. Control valve; 8. Venting duct; 9. Check valve; 10. CO2 storage tank; 11. Compressor; 12. Mixing chamber; 1201. Shell; 1202. Rotating blades; 13. Gas fertilizer supply equipment; 1301. Blade CO2 release mechanism; 13011. Support; 13012. Blower; 13013. Nozzle; 1302. Root CO2 release mechanism; 13021. Air outlet; 13022. Barb; 14. Air valve; 15. Second server. Detailed Implementation

[0043] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0044] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0045] Example 1:

[0046] like Figure 1 and Figure 2 As shown, this embodiment provides a crop gas fertilizer supply system driven by new energy sources, including a new energy power generation device 1, a battery pack 2, an induced draft fan 3, a purification chamber 4, a CO2 collection tank 5, a first server 6, a control valve 7, an venting duct 8, a check valve 9, a CO2 storage tank 10, a compressor 11, a mixing chamber 12, a gas fertilizer supply device 13, an air valve 14, and a second server 15. The new energy power generation device 1 includes a wind turbine power generation device 101 and a solar power generation device 102. The CO2 collection tank 5 is equipped with a graphite positive electrode 501, a graphite negative electrode 502, and a nickel foam gasket 503. The mixing chamber 12 includes a housing 1201 and rotating blades 1202 disposed within the housing 1201. The gas fertilizer supply device 13 includes a leaf CO2 release mechanism 1301 and a root CO2 release mechanism 1302; the leaf CO2 release mechanism 1301 includes a bracket 13011, a blower 13012 and a nozzle 13013; the root CO2 release mechanism 1302 includes an air outlet 13021 and barbs 13022.

[0047] In this embodiment, during the CO2 adsorption step, when the detector in the CO2 storage tank 10 detects that the CO2 concentration C reaches the set initial adsorption threshold, the first server 6 controls the system to issue an adsorption command, controlling the control valve 7 to open the venting duct 8 and close the CO2 storage tank duct. The exhaust fan 3 is adjusted to a large air volume, removing dust, moisture, and other impurities from the air through the purification chamber 4. The first detector collects the CO2 concentration and temperature, and uploads the data to the first server 6. Then, the cleaned air enters the CO2 capture tank 5 through the duct. After the CO2 in the CO2 capture tank 5 is captured by the capturing material, the air is vented through the control valve of the duct. The vented air then passes through the second detector for CO2 concentration detection, and the data is fed back to the first server 6. When the CO2 concentration data collected by the first and second detectors reaches the set range (e.g., not greater than 50 ppm), the first server 6 issues a stop command, the exhaust fan 3 stops running, and the control valve 7 is closed. During the CO2 adsorption process, the first server 6 issues an instruction: the heating wires and / or electrodes in the air duct and CO2 collection tank 5 are de-energized and in a closed state.

[0048] In the CO2 desorption step, when the detector in the CO2 storage tank detects that the CO2 concentration C has reached the set initial adsorption threshold, the first server 6 determines that the CO2 adsorption process has been completed and starts the CO2 desorption process. The first server 6 issues a command: the control valve 7 closes the air duct 8 in the venting direction and opens the air duct in the CO2 storage tank direction. The induced draft fan 3 starts with a small air volume, and at the same time, the electric heaters in the air ducts and CO2 collection tank 5 are activated. The temperature is controlled within the range of 70-100℃ by the temperature detector, or power is supplied to the positive and negative electrodes with a current range of 1-10A. CO2 desorption is achieved through heating and self-heating of the adsorption material, and the CO2 enters the CO2 storage tank 10 with the airflow.

[0049] Special attention should be paid to the following: The opening degree of the induced draft fan 3 needs to be adjusted according to the CO2 concentration in the CO2 storage tank 10, and the flow rate of the induced draft fan 3 should be matched with the CO2 concentration in the storage tank. Specific control details:

[0050] Optionally, the desorption time of each solid amine adsorbent can be obtained experimentally. t Mass space velocity V sp and the quality of the adsorbent M The total volume of CO2 released during the desorption process is then...

[0051]

[0052] in, This is the function corresponding to the CO2 desorption curve; for CO2 desorption concentration at time ppm.

[0053] The total flow rate of the induced draft fan 3 is set to The opening is set to So, the opening degree of the induced draft fan is related to the CO2 concentration in the CO2 storage tank. The relation is:

[0054]

[0055] Optionally, the carbon capture material is a solid amine adsorbent, mainly prepared by impregnation method, and consists of two parts: a support and an organic amine. The support is a porous material with macropores or mesopores, such as MCM-41, SBA-15, Al2O3, carbon nanotubes, carbon aerogels, mesoporous carbon, and porous resins; the organic amine includes polyamines such as polyethyleneimine (PEI) and polyacrylamide (PAA), as well as tetraethylenepentamine (TEPA).

[0056] Electrothermal desorption utilizes the excellent electrical and thermal conductivity of the adsorbent, accelerating CO2 desorption by directly applying electricity to both ends of the adsorbent or by electromagnetic induction to generate Joule heat. The carriers for solid amine adsorbents suitable for electrothermal desorption mainly refer to metal-doped carbon-based materials (carbon gel, carbon fiber), with doped metals such as zirconium, cerium, and copper, and elemental content ranging from 0.1% to 2% wt.

[0057] The CO2 supply system for field crops mainly mixes high-concentration (1.5%-2.0%) CO2 in a CO2 storage tank with air supplied by an air pump in a mixing chamber (with rotating blades) after passing through a compressor. This dilutes the CO2 concentration to the level required for plant growth. The CO2 is then supplied to the leaves of crops as a gas fertilizer through a pipeline system. When supplied to the roots, it not only maintains soil aeration but also dissolves into the soil aqueous solution, providing an inorganic carbon source for microorganisms and thus increasing the organic matter content of the soil.

[0058] The specific workflow is as follows: The CO2 detector detects the CO2 concentration near the plant leaves and uploads it to the second server. The second server, based on a set threshold, activates the CO2 supply system, starting the compressor and air pump. The compressor and air pump output flow rates are adjusted to ensure that the CO2 concentration in the output gas meets the optimal range for the plant after thorough mixing in the mixing chamber. In the delivery pipeline, the delivery pressure is adjusted according to the delivery distance to ensure the delivered gas pressure is 0.4-1.0 MPa.

[0059] The adjustment algorithm used to adjust the compressor output flow and air pump output flow is as follows:

[0060]

[0061] in, V2 represents the CO2 concentration in the CO2 storage tank, in ppm; V3 represents the compressor flow rate, in m³ / s. 3 / h; CO2 concentration in the air, in ppm; For air pump flow rate, m 3 / h; CO2 concentration after gas mixing, in ppm; The flow rate after gas mixing is m. 3 / h. The optimal CO2 concentration required for different plant types is shown in Table 1.

[0062] Table 1. Optimal CO2 concentration required for different plant types

[0063]

[0064] The optimal CO2 concentration range for most plants is typically between 300 and 1000 ppm (parts per million). Different plants respond differently to CO2 concentrations, and the specific values ​​vary depending on the plant species and its growing environment. Below are the optimal CO2 concentration ranges for some common plants:

[0065] Greenhouse plants (such as tomatoes and cucumbers): approximately 800-1000 ppm. Under greenhouse conditions, increasing CO2 concentration can promote photosynthesis, thereby increasing plant growth rate and yield.

[0066] Crops (such as wheat, corn, and rice): approximately 350-700 ppm. Crops have higher photosynthetic efficiency when CO2 concentration is moderate, but the improvement is not significant when it exceeds 700 ppm.

[0067] Corn, sorghum, sugarcane, etc.: approximately 300-600 ppm. Soybeans, cotton, spinach, and other plants are relatively less dependent on high CO2 concentrations because their photosynthetic pathways are more efficient, but a moderate increase in CO2 will still promote their growth.

[0068] For plants such as soybeans, cotton, and spinach: approximately 400-800 ppm. Soybeans, cotton, and spinach exhibit stronger photosynthetic and growth responses at higher CO2 concentrations.

[0069] In general, the optimal CO2 concentration for most plants is typically 600-1000 ppm above the natural atmospheric concentration (about 400 ppm), which can effectively promote photosynthesis, especially in controlled environments such as greenhouses.

[0070] The leaf CO2 release mechanism, which delivers CO2 to the leaves, is a retractable support with nozzles. The CO2 outlet on the support is a directional adjustable nozzle, which automatically adjusts its position based on the principle of airflow backflow. This system ensures that most of the plant leaves are contained within the CO2 release space. Its main function is to provide CO2 nutrient to the leaves.

[0071] The root CO2 release mechanism, which delivers CO2 to the underground plant roots, is a barbed structure with vent holes underneath to prevent them from being blocked by soil. The barbs are at an angle of <30°, the vent holes are 0.1-0.2 cm in size, spaced 8-12 cm apart, and penetrate 30-50 cm into the soil at the plant root level. Its main functions are: to improve soil aeration around plant roots; and to increase soil inorganic carbon sources and organic matter content.

[0072] like Figures 7-11 As shown, optionally, a wet impregnation method can be used to prepare the solid amine adsorbent. The specific preparation process is as follows: 0.45 g of TEPA is weighed and added to 5 mL of anhydrous methanol. The two are mixed thoroughly in a 40°C water bath by magnetic stirring for 30 min until the TEPA is completely dissolved. Subsequently, 1 g of carrier X-5 macroporous resin is added to the mixed solution, and stirring is continued at 40°C for 8 h. During the stirring process, the container is sealed to prevent the amine from being oxidized by contact with air. After stirring is completed, the mixture is placed in a vacuum drying oven at 60°C and dried overnight. After the anhydrous methanol in the mixture has completely evaporated, the solid amine adsorbent 30% TEPA / X-5 is obtained.

[0073] Example 2:

[0074] This embodiment provides a method for providing crop gas fertilizer using new energy sources, employing the crop gas fertilizer providing system using new energy sources as described in Embodiment 1, including:

[0075] The concentration of CO2 in the CO2 storage tank is controlled by adjusting the opening degree of the induced draft fan; the output flow rate of the compressor and the air inlet flow rate of the mixing chamber are controlled according to the concentration of CO2 in the CO2 storage tank and the CO2 concentration required by the crops.

[0076] Optionally, the CO2 concentration in the CO2 storage tank for:

[0077]

[0078]

[0079] in, This represents the total volume of CO2 released during the desorption process. t This refers to the adsorbent desorption time. Vsp Mass airspeed; M For the mass of the adsorbent; This is the function corresponding to the CO2 desorption curve; for CO2 desorption concentration at time; Set the total flow rate of the induced draft fan; For opening degree.

[0080] Optionally, the algorithm for adjusting the compressor output flow and air pump output flow is as follows:

[0081]

[0082] in, V2 represents the CO2 concentration in the CO2 storage tank; V3 represents the compressor flow rate. This refers to the CO2 concentration in the air. This refers to the air pump flow rate. This represents the CO2 concentration after gas mixing. This refers to the flow rate after gas mixing.

[0083] The above description is merely a preferred embodiment of this practice and is not intended to limit the scope of this practice. Various modifications and variations can be made to this practice by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this practice should be included within the protection scope of this practice.

Claims

1. A method for providing crop gas fertilizer using new energy sources, characterized in that, It uses a crop gas fertilizer supply system driven by new energy sources, which includes interconnected new energy power generation equipment, induced draft fan, CO2 capture tank, CO2 storage tank and gas fertilizer supply equipment; A compressor and a mixing chamber are provided between the CO2 storage tank and the gas fertilizer supply equipment; a CO2 concentration sensor is provided at the CO2 storage tank; the compressor and the CO2 concentration sensor are connected to a first server; the compressor and the mixing chamber are connected to a second server; the first server and the second server are connected. The first server is used to control the concentration of CO2 in the CO2 storage tank by adjusting the opening degree of the induced draft fan; the second server is used to control the output flow rate of the compressor and the air inlet flow rate of the mixing chamber according to the concentration of CO2 in the CO2 storage tank and the CO2 concentration required by the crops. The method includes: controlling the concentration of CO2 in the CO2 storage tank by adjusting the opening degree of the induced draft fan; controlling the output flow rate of the compressor and the air inlet flow rate of the mixing chamber according to the concentration of CO2 in the CO2 storage tank and the CO2 concentration required by the crops. CO2 concentration in the CO2 storage tank for: in, This represents the total volume of CO2 released during the desorption process. t This refers to the adsorbent desorption time. V sp Mass airspeed; M For the mass of the adsorbent; This is the function corresponding to the CO2 desorption curve; for CO2 desorption concentration at time; Set the total flow rate of the induced draft fan; For opening degree.

2. The method for providing crop gas fertilizer using new energy sources as described in claim 1, characterized in that, The new energy power generation equipment includes wind turbine power generation equipment and solar power generation equipment, and the wind turbine power generation equipment and the solar power generation equipment are connected to battery packs.

3. The method for providing crop gas fertilizer using new energy sources as described in claim 1, characterized in that, A purification chamber is provided between the induced draft fan and the CO2 collection tank.

4. The method for providing crop gas fertilizer using new energy sources as described in claim 1, characterized in that, The carbon capture material in the CO2 capture tank is a solid amine adsorbent.

5. The method for providing crop gas fertilizer using new energy sources as described in claim 1, characterized in that, An air valve is provided on the mixing chamber, and the air valve is connected to the second server.

6. The method for providing crop gas fertilizer using new energy sources as described in claim 1, characterized in that, The gas fertilizer supply equipment includes a leaf CO2 release mechanism and a root CO2 release mechanism.

7. The method for providing crop gas fertilizer using new energy sources as described in claim 6, characterized in that, The blade CO2 release mechanism includes a support and a nozzle disposed on the support, the support being a telescopic rod; the root CO2 release mechanism includes an air outlet and barbs disposed near the air outlet.

8. The method for providing crop gas fertilizer using new energy sources as described in claim 1, characterized in that, The algorithm for adjusting the compressor output flow and air pump output flow is as follows: in, V2 represents the CO2 concentration in the CO2 storage tank; V3 represents the compressor flow rate. This refers to the CO2 concentration in the air. This refers to the air pump flow rate. This represents the CO2 concentration after gas mixing. This refers to the flow rate after gas mixing.

Images