An industrial gas carbon capture treatment and irrigation water / ammonia-containing wastewater / sea water carbon dissolution integrated method and system

Abstract

The application provides an industrial gas carbon capture treatment and irrigation water / ammonia-containing wastewater / seawater carbon dissolution fertilization integrated method and system, wherein the ratio of the molar concentration of the rich liquid in the rich liquid water to the molar concentration of CO2 in the industrial tail gas is matched with the ratio of the molar coefficients of the rich liquid and CO2 in the corresponding chemical reaction equation, and then the supergravity reactor is passed through. The supergravity technology is a kind of efficient process intensification technology, which is suitable for the intensification of a "mixing / mass transfer controlled reaction system". Under high-speed rotation, the interphase mass transfer efficiency is improved by 1-3 orders of magnitude compared with the traditional tower, and the micro-mixing and mass transfer process is greatly intensified, so that the carbon dioxide in the industrial tail gas forms micro-nano bubbles. The existence of the nano-micro bubbles increases the gas-liquid contact area, improves the gas content of the solution, and intensifies the mass transfer / dissolution of the gas-liquid system, so that the pH of the water after absorbing CO2 is stably kept at a low level for a long time, and the rapid dissolution, stable transportation and carbon fertilizer resource utilization of CO2 in the irrigation water / ammonia-containing wastewater / seawater are realized.

Description

Technical Field

[0001] This invention relates to enhanced gas dispersion technology in the liquid phase, and more specifically, to an integrated method and system for industrial gas carbon capture and treatment and the application of dissolved carbon to irrigation water / ammonia-containing wastewater / seawater. Background Technology

[0002] my country has approximately 200 million mu of saline-alkali land, a large proportion of which has the potential for agricultural production. Timely management of saline-alkali wasteland can improve the local ecological environment, increase land utilization, and promote the further development of regional ecological economy.

[0003] CO2 is a primary raw material for crop photosynthesis. The pH of a CO2-soluble system is below 6.0, meaning that its use in irrigating saline-alkali land can improve soil quality while utilizing CO2 resources. However, CO2 has low solubility in water and its dispersed bubbles are unstable. If traditional CO2 drip irrigation technology is used, CO2 escapes, failing to achieve the goal of improving saline-alkali land. Furthermore, the direct emission of treated industrial waste gas leads to excessively high carbon dioxide concentrations, a particularly prominent problem.

[0004] Increased CO2 emissions are contributing to global warming, and the ocean plays a crucial role in absorbing and regulating CO2 concentrations, with seawater having an alkaline pH between 7 and 9. Therefore, developing an integrated method and system for industrial gaseous carbon capture and treatment combined with irrigation water / ammonia-containing wastewater / seawater carbon dissolution fertilization, and for improving saline-alkali land and promoting crop yields, utilizing irrigation water / ammonia-containing wastewater / seawater carbon dissolution, has significant practical application value in the agricultural field. Summary of the Invention

[0005] To address the challenges of CO2 escape hindering the improvement of saline-alkali land, and the excessively high carbon dioxide concentrations resulting from direct emissions of treated industrial waste gas, this application provides an integrated method and system for industrial gas carbon capture and treatment combined with irrigation water / ammonia-containing wastewater / seawater carbon dissolution fertilization. By incorporating hypergravity technology, some CO2 gas can be dispersed in the aqueous solution as nanobubbles within a hypergravity reactor. Nanobubbles are bubbles with diameters in the nanometer or micrometer range. Experiments show that the presence of nanobubbles can significantly increase the gas content in the liquid phase, and they rise slowly in water and persist for a long time.

[0006] To address at least one of the aforementioned problems, in a first aspect, the present invention provides an integrated method for industrial gas carbon capture and treatment combined with irrigation water / ammonia-containing wastewater / seawater carbon dissolution fertilization, comprising:

[0007] Rich liquid water and CO2-containing industrial tail gas are passed into a centrifugal reactor to obtain a CO2 aqueous solution; wherein the ratio of the molar concentration of the rich liquid water to the molar concentration of CO2 in the industrial tail gas matches the ratio of the molar coefficient of the rich liquid water to CO2 in the corresponding chemical reaction equation.

[0008] The hypergravity reactor is activated, and the hypergravity reactor shears the CO2 aqueous solution to form CO2 nanobubbles;

[0009] CO2 aqueous solution is introduced into irrigation for farmland and marine crop aquaculture.

[0010] Secondly, the present invention provides an integrated system for industrial gas carbon capture and treatment and irrigation water / ammonia-containing wastewater / seawater carbon dissolution fertilization, comprising:

[0011] After the rich liquid water and CO2-containing industrial exhaust gas are introduced into the hypergravity reactor, a biosurfactant is pumped into the hypergravity reactor.

[0012] Preferably, the CO2 gas is industrial CO2 tail gas; the industrial CO2 tail gas is flue gas, desulfurized process gas, Claus tail gas, or acid gas.

[0013] Preferably, the operation of the integrated irrigation water / ammonia-containing wastewater / seawater carbon dissolving fertilizer system is either a single liquid inlet or a cyclic liquid inlet.

[0014] Preferably, the biosurfactant is an alkyl glycoside.

[0015] Preferably, the integrated irrigation water / ammonia-containing wastewater / seawater carbon dissolving fertilization system includes: a supergravity reactor, a rich liquid storage tank connected to the supergravity reactor, and an industrial exhaust gas inlet; wherein the ratio of the molar concentration of the rich liquid in the rich liquid storage tank to the molar concentration of CO2 in the industrial exhaust gas matches the ratio of the molar coefficient of the rich liquid to CO2 in the corresponding chemical reaction equation.

[0016] Preferably, the integrated irrigation water / ammonia-containing wastewater / seawater carbon dissolving fertilizer system further includes: a motor, a rich liquid pump, a CO2 concentration detector, a pH probe, a liquid circulation pipeline, and liquid valves.

[0017] Preferably, the high-gravity rotating bed includes a reactor shell, a rotating cavity, packing, a rotating shaft, a gas inlet, a gas outlet, a liquid inlet, and a liquid outlet.

[0018] Preferably, the rotating packed bed has a shell diameter of 250-5000 mm, a rotor inner diameter of 50-1000 mm, and a rotor outer diameter of 150-4000 mm. The packing material is metal wire mesh, and the rotation speed of the ultragravity packed bed is 100-3000 rpm.

[0019] Beneficial effects of the present invention

[0020] This invention provides an integrated method and system for industrial gas carbon capture and treatment, and carbon dissolution fertilization in irrigation water / ammonia-containing wastewater / seawater. By combining hypergravity technology and chemical balancing technology, the molar concentration ratio of the rich solution in the enriched water to the molar concentration of CO2 in the industrial exhaust gas is matched with the molar coefficient ratio of the rich solution to CO2 in the corresponding chemical reaction equation. The mixture is then introduced into a hypergravity reactor. Hypergravity technology is a highly efficient process intensification technique suitable for intensifying reaction systems controlled by mixing / mass transfer. Under high-speed rotation, the mass transfer efficiency between phases is increased by 1-3 orders of magnitude compared to traditional towers, greatly enhancing micro-mixing and mass transfer processes. This causes carbon dioxide in the industrial exhaust gas to form micro- and nano-bubbles. The presence of these micro- and nano-bubbles increases the gas-liquid contact area, improves the gas holdup of the solution, and enhances the mass transfer / dissolution of the gas-liquid system. This keeps the pH of the water after CO2 absorption at a low level for a long period, achieving rapid dissolution, stable transport, and carbon fertilizer resource utilization of CO2 in irrigation water / ammonia-containing wastewater / seawater. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure and process of the present invention.

[0023] Figure 2 This is a schematic diagram of a process system according to the present invention.

[0024] Figure descriptions: 1-Reactor shell; 2-Rotating chamber; 3-Packaging; 4-Liquid inlet; 5-Gas inlet; 6-Gas outlet; 7-Liquid outlet; 8-Rotating shaft; 9-Motor; 10-Rich liquid circulation tank; 11-Rich liquid pump; 12-CO2 concentration detector; 13-pH probe; 14, 15, 16-Liquid valves; 17-Liquid circulation pipeline. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] For ease of description, the terms "first," "second," etc., used in this invention are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, such a combination should be considered non-existent and not within the scope of protection claimed by this invention.

[0027] CO2 has low solubility in water and its dispersed bubbles are unstable. Traditional CO2-based drip irrigation technology fails to improve saline-alkali land due to CO2 escape. Furthermore, the direct emission of treated industrial waste gas leads to excessively high carbon dioxide concentrations. Therefore, developing a process system that enhances the continuous and efficient dissolution / dispersion of CO2 gas in aqueous solutions, combined with current industrial waste gas treatment technologies, has significant practical application value.

[0028] The study of the laws governing the "three transmissions and one reaction" in hypergravity enhancement and the application of hypergravity in carbon capture provides the foundation for this invention. In addition, in terms of hypergravity-enhanced gas dispersion, research has found that the dispersion effect of gas in the liquid phase in a hypergravity field is very good, and laser scattering can occur, proving that a large number of nanoscale bubbles are generated, which also lays a good foundation for this invention.

[0029] Based on this, the present invention provides an integrated method for industrial gas carbon capture and treatment with irrigation water / ammonia-containing wastewater / seawater carbon dissolution fertilization, such as... Figure 1 As shown, it includes:

[0030] Step S001: The rich liquid water and CO2-containing industrial tail gas are introduced into a high gravity reactor to obtain a CO2 aqueous solution; wherein the ratio of the molar concentration of the rich liquid water to the molar concentration of CO2 in the industrial tail gas matches the ratio of the molar coefficient of the rich liquid to CO2 in the corresponding chemical reaction equation.

[0031] Step S002: Start the supergravity reactor, which shears the CO2 aqueous solution to form CO2 nanobubbles;

[0032] Step S003: Introduce CO2 aqueous solution into irrigation for farmland and marine crop aquaculture.

[0033] In this embodiment, the present invention provides an integrated method and system for industrial gas carbon capture and treatment and irrigation water / ammonia-containing wastewater / seawater carbon dissolution fertilization. The resulting CO2 aqueous solution contains not only CO2 dissolved in the aqueous solution, but also some CO2 nanobubbles dispersed in the aqueous solution. The generated CO2 nanobubbles have a longer residence time in the solution. In the entire CO2 dissolution process, CO2 is first sheared by the aeration component to form bubbles, and then adsorbed by the adsorbent to form CO2 bubbles. These CO2 bubbles are stably dispersed in the aqueous solution.

[0034] An aqueous solution containing CO2 nanobubbles is used for drip irrigation under a membrane to irrigate saline-alkali land, thereby improving the salinization level of the land. Drip irrigation tape is laid under the membrane, and the aqueous solution containing CO2 nanobubbles is fed into the tape. The drip irrigation tape is equipped with emitters, allowing water to continuously drip into the saline-alkali land until it seeps into the plant roots. This reduces water evaporation and improves the plant growth environment.

[0035] This invention provides an integrated method and system for industrial gas carbon capture and treatment, and carbon dissolution fertilization in irrigation water / ammonia-containing wastewater / seawater. By combining hypergravity technology and chemical balancing technology, the molar concentration ratio of the rich solution in the rich solution to the molar concentration of CO2 in the industrial tail gas is matched with the molar coefficient ratio of the rich solution to CO2 in the corresponding chemical reaction equation. Then, the solution is introduced into a hypergravity reactor. Hypergravity technology is a highly efficient process intensification technology, suitable for the intensification of "reaction systems controlled by mixing / mass transfer". Under high-speed rotation, the mass transfer efficiency between phases is increased by 1 to 3 orders of magnitude compared with traditional towers. The micro-mixing and mass transfer processes are greatly enhanced, thereby causing carbon dioxide in the industrial tail gas to form micro- and nano-bubbles. The presence of micro- and nano-bubbles increases the gas-liquid contact area, improves the gas holdup of the solution, and enhances the mass transfer / dissolution of the gas-liquid system, realizing the rapid dissolution, stable dispersion, and transport of CO2 in alkaline irrigation water / ammonia-containing wastewater / seawater.

[0036] In some specific implementations, see Figure 1 The integrated method for applying irrigation water / ammonia-containing wastewater / seawater dissolved carbon fertilizer also includes:

[0037] Step S004: After introducing the rich liquid water and CO2-containing industrial tail gas into the hypergravity reactor, the biosurfactant is pumped into the hypergravity reactor.

[0038] In this embodiment, after the introduction of rich liquid water and industrial exhaust gas containing CO2, the rich liquid water and industrial exhaust gas containing CO2 react and mix in the hypergravity reactor, thereby removing polluting gases from the exhaust gas. Then, a biosurfactant is added, which can keep the micro-nano bubbles suspended in the water, thus forming a dynamic "locking ball" that locks the carbon dioxide in the locking ball. After irrigation, the biosurfactant can be removed through automatic degradation, thereby making the carbon dioxide retention time longer and the carbon dioxide micro-nano bubbles more stable in the water and less likely to escape.

[0039] In a preferred embodiment, the biosurfactant is applied to an aqueous solution with a pH of 5-6. The inventors of this application have discovered that, on the one hand, the weak acidity makes it difficult for carbon dioxide to be converted into carbonic acid, and on the other hand, due to the weak acid environment, based on the principle of chemical reaction equilibrium, carbon dioxide is less soluble in water. By combining the biosurfactant, the carbon dioxide in the state of separation from water is coated, thereby stabilizing the carbon dioxide in water. Experiments have shown that the carbon dioxide can be stabilized for more than a week.

[0040] Biosurfactants can be alkyl glycosides, which will not be elaborated here.

[0041] Furthermore, the CO2 gas is industrial CO2 tail gas; the industrial CO2 tail gas is flue gas, desulfurized process gas, Claus tail gas, or acid gas.

[0042] Furthermore, the operation process of the integrated irrigation water / ammonia-containing wastewater / seawater carbon dissolving fertilization method and system involves either single liquid inlet or cyclic liquid inlet.

[0043] This invention provides an integrated method and system for industrial gas carbon capture and treatment combined with carbon dissolution fertilization in irrigation water / ammonia-containing wastewater / seawater. In this hypergravity device, the liquid phase is the dispersed phase, and the gas phase is the continuous phase. The inventors discovered that under certain operating conditions, the CO2 utilization rate can reach 80-90%, the pH of the outlet solution after a single influent injection can reach 5.3, and the pH of the outlet solution after circulation can reach 5.0. The gas content of the solution is about 4-5%, and the pH of the outlet solution can be stabilized for a long time, more than one week. The average size of the CO2 nanobubbles formed is 150 nm, and the existence time is at least 10 days. The presence of nanobubbles increases the gas-liquid contact area, improves the gas content of the solution, enhances the mass transfer / dissolution of the gas-liquid system, and realizes the rapid dissolution, stable dispersion, and transport of CO2 in alkaline irrigation water / ammonia-containing wastewater / seawater. The entire process system is simple in route and operation; the device occupies a small area, and the outlet aqueous solution can be directly used for irrigation of saline-alkali land, which can significantly improve crop growth and yield, promote saline-alkali land improvement and agricultural development, and realize the resource utilization of CO2. The promotion and application of this invention has important practical application value in the agricultural field.

[0044] This application also provides an integrated system for industrial gas carbon capture and treatment and irrigation water / ammonia-containing wastewater / seawater carbon dissolution fertilization, comprising: a hypergravity reactor, a rich liquid storage tank connected to the hypergravity reactor, and an industrial exhaust gas inlet; wherein the ratio of the molar concentration of the rich liquid in the rich liquid storage tank to the molar concentration of CO2 in the industrial exhaust gas matches the ratio of the molar coefficient of the rich liquid to CO2 in the corresponding chemical reaction equation.

[0045] In this embodiment, see Figure 1 The CO2 gas comes from industrial exhaust gas and is transported to the gas inlet of the hypergravity reactor through pipelines. The initial aqueous solution is agricultural irrigation water / ammonia-containing wastewater / seawater. The initial aqueous solution storage tank includes a nanoporous material inlet and a salt addition port to facilitate the pretreatment of the initial aqueous solution. The outlet of the hypergravity reactor is equipped with a CO2 concentration detector and a pH detector to detect the CO2 content in the CO2 aqueous solution and the pH value of the solution.

[0046] Preferably, the integrated irrigation water / ammonia-containing wastewater / seawater carbon dissolving fertilizer system further includes: an aeration device, which can shear the CO2 gas to obtain CO2 bubbles; the aeration device first shears the CO2 aqueous solution, and then the supergravity reactor performs a second shearing, which can facilitate the improvement of the shearing efficiency and shearing effect of the supergravity reactor.

[0047] An integrated method and system for industrial gas carbon capture and treatment and irrigation water / ammonia-containing wastewater / seawater carbon dissolution fertilization includes: a motor, a high-gravity rotating bed, a rich liquid circulation tank, a rich liquid pump, a CO2 concentration detector, a pH probe, a liquid circulation pipeline, and liquid valves;

[0048] Specifically, the supergravity rotating bed includes a reactor shell, a rotating cavity, packing, a rotating shaft, a gas inlet, a gas outlet, a liquid inlet, and a liquid outlet.

[0049] Specifically, the outer shell of the rotary packed bed has a diameter of 250-5000 mm, an inner rotor diameter of 50-1000 mm, and an outer rotor diameter of 150-4000 mm. The packing material is metal wire mesh, and the rotational speed of the ultragravity packed bed is 100-3000 rpm.

[0050] Specifically, the gas inlet of the supergravity rotating bed is connected to CO2 industrial exhaust gas.

[0051] Specifically, the inlet of the rich liquid circulation tank is connected to the liquid outlet of the high-gravity rotating bed, and the inlet of the rich liquid pump is connected to the outlet of the rich liquid circulation tank.

[0052] Specifically, the CO2 concentration detector is used to detect the CO2 concentration in the outlet solution;

[0053] Specifically, the pH probe is used to detect the pH value of the outlet solution;

[0054] Specifically, when liquid valves 14 and 16 are open and valve 15 and the rich liquid pump are closed, the entire system loop is a single liquid inlet; when liquid valve 14 is closed and liquid valves 15 and 16 and the rich liquid pump are open, the entire system loop is a liquid circulation loop.

[0055] Specifically, the size distribution of the CO2 nanobubbles is detected by a nanolaser particle size analyzer.

[0056] Those skilled in the art should know that "nano-micro" in this application refers to the nano-micro scale, that is, the size is in the range of nanometers and micrometers, that is, between 1 nm and 100 μm.

[0057] In some embodiments, the average particle size of the formed CO2 nanobubbles is between 400 nanometers and 50 micrometers, which can be achieved by methods such as nanolaser particle size analyzers and nanoparticle tracking analysis technology. This application is not limited to these methods.

[0058] The specific operation process is as follows:

[0059] First, during a single liquid inlet, liquid valves 14 and 16 are opened to feed irrigation water / ammonia-containing wastewater / seawater into the high-gravity rotating bed through the liquid inlet. Simultaneously, industrial CO2 exhaust gas is fed into the high-gravity rotating bed through the gas inlet. After the gas-liquid flow rate stabilizes, the motor is turned on to drive the high-gravity rotating bed to rotate at high speed, with the speed controlled at less than 3000 rpm (during circulating liquid inlet, liquid valves 14 and 15 and rich liquid pump 11 are opened). At this time, the irrigation water / ammonia-containing wastewater / seawater in the high-gravity rotating bed comes into contact with the industrial CO2 exhaust gas. Under the action of centrifugal force, the liquid moves outward through the packing material. Under the huge shear force, the liquid is dispersed into micron to nano-sized liquid films, liquid filaments, and droplets. Moreover, the high-gravity rotating bed can enhance the generation of CO2 nanobubbles, further increasing the concentration of dissolved CO2 in the irrigation water / ammonia-containing wastewater / seawater and the gas-liquid contact area, thereby improving the mass transfer efficiency of the gas-liquid system and realizing the rapid dissolution and dispersion of CO2 in the irrigation water / ammonia-containing wastewater / seawater.

[0060] like Figure 2 As shown, this application can be applied to farmland irrigation, facility agriculture irrigation, and marine crop aquaculture, etc. This application does not limit these applications. It is understood that the examples above do not constitute a limitation on the scope of protection of this application, that is, this application can be used in any scenario rich in CO2 water and fertilizer.

[0061] The present invention will now be described in detail with reference to specific embodiments.

[0062] Example 1:

[0063] Simulated boiler exhaust gas, specific components: CO2 concentration 12%, SO2 concentration 0.5%, NO... x With a concentration of 300 ppm, an absorbent solution of irrigation water / seawater (pH = 8.5), a gas-liquid ratio of 50, and a centrifugal rotation speed of 2000 rpm, this invention can simultaneously remove CO2, SO2, and NO. x The CO2 removal rate at the outlet reaches 80-90%, and the SO2 concentration is reduced to 100 mg / m³. 3 The following, NO x When the concentration drops below 8 ppm, the pH of the outlet solution after a single influent is 5.28, and the pH of the solution after circulation is 5.0. The pH value can remain stable for more than a week. The outlet solution can be directly used as CO2 fertilizer and nitrogen fertilizer for irrigation to improve the soil and promote crop yield.

[0064] Example 2:

[0065] Simulated flue gas, specific components: CO2 concentration 10%, SO2 concentration 0.5%, NO... x With a concentration of 400 ppm, an absorbent solution of irrigation water / seawater (pH = 8.5), a gas-liquid ratio of 50, and a centrifugal rotation speed of 2000 rpm, this invention can simultaneously remove CO2, SO2, and NO. x The CO2 removal rate at the outlet reaches 80-90%, and the SO2 concentration is reduced to 100 mg / m³. 3 The following, NO x When the concentration drops below 10 ppm, the pH of the outlet solution after a single influent is 5.3, and the pH of the solution after circulation is 5.05. The pH value can remain stable for more than a week. The outlet solution can be directly used as CO2 fertilizer and nitrogen fertilizer for irrigation to improve the soil and promote crop yield.

[0066] Example 3:

[0067] Simulated process gas (desulfurized gas from cracked gas), specific composition: CO2 concentration 10%, H2S concentration 50ppm, absorbent using irrigation water / seawater (pH=8.5), gas-liquid ratio 65, centrifugal rotation speed 2000rpm. This invention can simultaneously remove CO2 and H2S, achieving an outlet CO2 removal rate of 80-90% and reducing H2S concentration to 1mg / m³. 3 The outlet solution after a single influent intake has a pH of 5.32, and the solution after circulation has a pH of 5.03. The pH value remains stable for more than a week. The outlet solution can be directly used as CO2 fertilizer for irrigation to improve the soil and promote crop yield.

[0068] Example 4:

[0069] Simulating Claus tail gas (after desulfurization), with specific components: CO2 concentration of 10%, H2S concentration of 50ppm, absorbent using irrigation water / seawater (pH=8.5), gas-liquid ratio of 65, and centrifugal rotation speed of 2000rpm, this invention can simultaneously remove CO2 and H2S, achieving an outlet CO2 removal rate of 80-90% and reducing H2S concentration to 3mg / m³. 3 The outlet solution after a single influent intake has a pH of 5.34, and the solution after circulation has a pH of 5.06. The pH value remains stable for more than a week. The outlet solution can be directly used as CO2 fertilizer for irrigation to improve the soil and promote crop yield.

[0070] Example 5:

[0071] Simulated acidic gas (after desulfurization), specific components: CO2 concentration 10%, SO2 concentration 0.5%, NO... x With a concentration of 300 ppm, an absorbent solution of irrigation water / seawater (pH = 8.5), a gas-liquid ratio of 50, and a centrifugal rotation speed of 2000 rpm, this invention can simultaneously remove CO2, SO2, and NO. x The CO2 removal rate at the outlet reaches 80-90%, and the SO2 concentration is reduced to 100 mg / m³. 3 The following, NO x When the concentration drops below 10 ppm, the pH of the outlet solution after a single influent is 5.33, and the pH of the solution after circulation is 5.05. The pH value can remain stable for more than a week. The outlet solution can be directly used as CO2 fertilizer and nitrogen fertilizer for irrigation to improve the soil and promote crop yield.

[0072] Example 6:

[0073] Simulated flue gas, specific components: CO2 concentration 10%, SO2 concentration 0.5%, NO... x With a concentration of 400 ppm, using ammonia-containing wastewater (pH = 8.5) as the absorbent, a gas-liquid ratio of 65, and a centrifugal rotation speed of 2000 rpm, this invention can simultaneously remove CO2, SO2, and NO. x The CO2 removal rate at the outlet reaches 80-90%, and the SO2 concentration is reduced to 100 mg / m³. 3 The following, NO x When the concentration drops below 10 ppm, the pH of the outlet solution after a single influent is 5.31, and the pH of the solution after circulation is 5.05. The pH value can remain stable for more than a week. The outlet solution can be directly used as CO2 fertilizer and nitrogen fertilizer for irrigation to improve the soil and promote crop yield.

[0074] Example 7:

[0075] Simulated industrial waste gas, specific components: CO2 concentration 15%, NH3 concentration 100ppm, SO2 concentration 0.5%, NO... x With a concentration of 300 ppm, an absorbent solution of irrigation water / seawater (pH = 8.5), a gas-liquid ratio of 50, and a centrifugal rotation speed of 2000 rpm, this invention can simultaneously remove CO2, NH3, SO2, and NO. x The CO2 removal rate at the outlet reaches 80-90%, the NH3 concentration drops below 5 ppm, and the SO2 concentration drops to 100 mg / m³. 3 The following, NO x When the concentration drops below 8 ppm, the pH of the outlet solution after a single influent is 5.26, and the pH of the solution after circulation is 5.0. The pH value can remain stable for more than a week. The outlet solution can be directly used as CO2 fertilizer and nitrogen fertilizer for irrigation to improve the soil and promote crop yield.

[0076] In the above embodiments, the pH of the outlet solution can be stabilized for more than a week. Irrigation with irrigation water / ammonia-containing wastewater after carbon dissolution can increase the yield of crops such as wheat, corn, and leafy vegetables by more than 20%-50%. Irrigation with seawater after carbon dissolution can increase the yield of marine crops such as seaweed and sea grapes by more than 10%-30%.

[0077] It is understood that the present invention provides an integrated method and system for industrial gas carbon capture and treatment and for applying dissolved carbon to irrigation water / ammonia-containing wastewater / seawater.

[0078] Saline-alkali land inhibits plant growth, or even prevents it from growing. CO2 water-soluble systems have a pH below 6.0 and can be used for irrigation of saline-alkali land. However, CO2 has low solubility and unstable dispersion in aqueous solutions. Traditional CO2 drip irrigation technology suffers from small gas-liquid contact area, and the dispersed CO2 bubbles are easily decomposed during transportation and irrigation, making it difficult to achieve effective utilization of CO2 and the goal of improving saline-alkali land.

[0079] Therefore, to address the aforementioned problems, this invention innovatively proposes an integrated method and system for industrial gas carbon capture and treatment combined with irrigation water / ammonia-containing wastewater / seawater carbon dissolution fertilization. Research on the laws governing the enhancement of "three transfers and one reaction" (mass transfer, water transfer, and chemical reaction) and the application of supergravity in carbon capture provides the foundation for this invention. Furthermore, studies on enhancing gas dispersion using supergravity have found that gas dispersion in a supergravity field is excellent in the liquid phase, exhibiting laser scattering phenomena and demonstrating the generation of a large number of nanoscale bubbles, further solidifying this foundation. Therefore, this invention utilizes supergravity technology to enhance the dissolution and dispersion of CO2 gas in water, thereby enhancing the mass transfer / dissolution of the gas-liquid system. The pH of the solution after a single injection is controlled at approximately 5.3, and the pH of the solution after circulation is controlled at approximately 5, remaining stable for more than a week. The residence time of the dispersed CO2 nanobubbles is at least 10 days.

[0080] This invention combines novel drip irrigation technology for irrigating saline-alkali land, possessing significant practical application value. This invention not only explores new carbon emission reduction pathways and achieves efficient resource conversion and utilization of CO2, but also improves saline-alkali land and promotes green and efficient agricultural development, realizing the integration of industry and agriculture.

[0081] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments described in this specification. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0082] Furthermore, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples, without contradiction. The above descriptions are merely embodiments of the embodiments described in this specification and are not intended to limit the embodiments of this specification. Various modifications and variations can be made to the embodiments described in this specification by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the embodiments described in this specification should be included within the scope of the claims of the embodiments described in this specification.

Claims

1. A method for integrating industrial gas carbon capture and treatment with irrigation water / ammonia-containing wastewater / seawater carbon dissolution fertilization, characterized in that, include: Rich liquid water and CO2-containing industrial tail gas are passed into a centrifugal reactor to obtain a CO2 aqueous solution; wherein the ratio of the molar concentration of the rich liquid water to the molar concentration of CO2 in the industrial tail gas matches the ratio of the molar coefficient of the rich liquid water to CO2 in the corresponding chemical reaction equation. The hypergravity reactor is activated, and the hypergravity reactor shears the CO2 aqueous solution to form CO2 nanobubbles; CO2 aqueous solution is introduced into soil irrigation and marine crop aquaculture; The integrated method for applying irrigation water / ammonia-containing wastewater / seawater dissolved carbon fertilizer also includes: After the rich liquid water and CO2-containing industrial exhaust gas are introduced into the hypergravity reactor, a biosurfactant is pumped into the hypergravity reactor.

2. The integrated method for applying irrigation water / ammonia-containing wastewater / seawater dissolved carbon fertilizer according to claim 1, characterized in that, CO2 industrial tail gas includes flue gas, desulfurized process gas, Claus tail gas, or acid gas.

3. The integrated method for applying irrigation water / ammonia-containing wastewater / seawater dissolved carbon fertilizer according to claim 1, characterized in that, The operation of the integrated irrigation water / ammonia-containing wastewater / seawater carbon dissolving fertilizer method involves either single liquid inlet or cyclic liquid inlet.

4. The integrated method for applying irrigation water / ammonia-containing wastewater / seawater dissolved carbon fertilizer according to claim 1, characterized in that, The biosurfactant is an alkyl glycoside.

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