Atomization rotational flow crystallization device for CO2 resource recovery

Abstract

The utility model discloses an atomization rotational flow crystallization device for CO2 resource recovery, which relates to the technical field of recovery of CO2 in combustion flue gas and comprises a spray gas inlet device, a spherical cyclone and a condensation crystallization device. According to the utility model, the atomization rotational flow crystallization device is adopted to realize CO2 resource recovery of flue gas, the flue gas is firstly in full contact with atomization absorption liquid sprayed by the multi-point spraying array assembly to form a flue gas absorption liquid mixture, the flue gas absorption liquid mixture is in a rotational flow state after entering the spherical hydrocyclone, and gas-liquid phase separation is carried out, so that the CO2 resource recovery is realized. The liquid phase is condensed under the condensation action of the condensation crystallization device to obtain a solid-phase product sodium bicarbonate and a liquid-phase absorption liquid, and the liquid-phase absorption liquid is subjected to temperature control adjustment and atomization again to provide an absorption liquid for the multi-point spray array assembly; and the method can also be used for large-scale CO2 resource recovery scenes such as thermal power plants and the like, the process and equipment are stable and reliable, the operation is flexible, and the CO2 absorption conversion rate is high.

Description

Technical Field

[0001] The utility model relates to the technical field of CO2 recovery in combustion flue gas, in particular to an atomizing cyclone crystallization device for CO2 resource recovery. Background Art

[0002] At present, CO2 capture in flue gas is commonly achieved through nitrogen injection, temperature swing absorption, pressure swing absorption, and adsorption membrane separation. These methods are generally targeted at coal-fired power plants and other entities that produce large amounts of CO2 and require a complex post-processing system. They are also difficult to apply to other enterprises that use CO2 or (NH4)2CO3 as raw materials, such as glass factories and ceramic factories, which have smaller and more scattered flue gas volumes.

[0003] The absorption method uses alkaline solutions (such as MEA, DEA, and MDEA) to absorb CO2 from flue gas, forming bicarbonate or carbonate. The CO2 is then released through heating or decompression, enabling CO2 recovery. The heating and decompression processes require significant energy. Alkaline solutions are corrosive to equipment, requiring the use of corrosion-resistant materials, which increases costs.

[0004] Membrane separation uses the selective permeability of specific membranes to CO2 to separate CO2 from other gases.

[0005] Particulate matter and other components in the flue gas may contaminate or clog the membrane, reducing separation efficiency. Membrane materials may age with long-term use and require regular replacement. Maintaining the membrane in working condition requires a certain amount of energy.

[0006] Another method, called condensation, involves lowering the temperature to saturate the CO2 in the flue gas and condense it, thereby separating the CO2. The cooling process requires a significant amount of energy. This method is suitable for flue gas with high CO2 concentrations and is less effective for flue gas with low CO2 concentrations.

[0007] These traditional processes have some effectiveness in CO2 recovery, but they all have certain disadvantages, such as high energy consumption, complex operation, high cost, corrosion and pollution to equipment, etc. Therefore, there is an urgent need to develop more efficient and economical CO2 recovery technologies. Utility Model Content

[0008] In order to solve the above-mentioned technical problem of CO2 resource recovery in flue gas, the utility model provides an atomizing cyclone crystallization device for CO2 resource recovery. The following technical solutions are adopted:

[0009] It includes a spray air inlet device and a cyclone crystallization device;

[0010] The spray air inlet device includes a flue gas atomization absorption liquid confluence pipe and a multi-point spray array assembly. The flue gas pipe is connected to the flue gas atomization absorption liquid confluence pipe. The multi-point spray array assembly is installed on the inner wall of the flue gas atomization absorption liquid confluence pipe and is located at one end connected to the flue gas pipe.

[0011] The cyclone crystallization device includes a spherical cyclone and a condensation crystallization device;

[0012] The spherical cyclone includes a spherical shell, multiple swirl guide plates, a condenser demister, and swirl blades. A flue gas inlet is provided on one side of the spherical shell, a gas phase outlet is provided on the other side, and a liquid phase outlet is provided at the bottom. The swirl blades are installed at the flue gas inlet of the spherical shell. Multiple swirl guide plates are respectively installed on the inner wall of the spherical shell. The gaps between the multiple swirl guide plates are used to guide the incoming flue gas absorption liquid mixture into a swirl state. The condenser demister is installed at the gas phase outlet and protrudes into the interior of the spherical shell.

[0013] The condensation and crystallization device is connected to the liquid phase outlet at the bottom of the spherical shell. After the liquid phase is condensed and crystallized, high-speed solid-liquid separation is performed to obtain a solid phase product and a liquid absorption liquid. The liquid absorption liquid is then temperature-controlled, adjusted, and atomized and connected to the inlet of the multi-point spray array component.

[0014] By adopting the above technical solution, an atomizing cyclone crystallization device is used to realize the resource recovery of CO2 from the flue gas that has been treated with dust removal and desulfurization. When the flue gas enters, it first fully contacts with the atomized absorption liquid sprayed by the multi-point spray array component to form a flue gas absorption liquid mixture. After entering the spherical cyclone, the cyclone blades make the flue gas enter the spherical cyclone in a cyclone state. A spherical shell is used with multiple cyclone guide plates, and cyclone guide grooves are formed between adjacent cyclone guide plates. The rotation radius of the flue gas absorption liquid mixture gradually increases in the initial stage of the cyclone, and gradually decreases after passing through the middle of the spherical shell. The cyclone diameter changes gradually, and the pressure along the spherical surface is greater than that near the center line, realizing the diversion of inlet and outlet gases in a small space, reducing the proportion of direct short-circuit outflow of gas, and under the action of the internal cyclone gas and the mainstream return gas, the mixing uniformity of the absorption liquid and the flue gas is improved, thereby improving the CO2 recovery rate. The condensing mist eliminator protrudes into the interior of the spherical shell, and the protruding part is generally set to reach one-quarter to one-third of the diameter of the spherical shell. The condensing array plates of the condensing mist eliminator adopt V-shaped plates. The V-shaped plates of different layers are installed in a staggered manner, which can efficiently condense the droplets. The droplets aggregate and become larger and finally fall. The gas-liquid phase separation can be achieved by using a condenser, etc. After the gas-liquid phase separation, the liquid phase is condensed by the condensation crystallization device to obtain a solid phase product and a liquid absorption liquid. The solid phase product is sodium bicarbonate. The liquid absorption liquid is again temperature-controlled and atomized to provide absorption liquid for the multi-point spray array component;

[0015] After the gas-liquid separation in the spherical cyclone, there will still be residual CO2 in the gas phase. Subsequently, one or more absorption towers can be set up to recover the residual CO2.

[0016] It can realize the resource recovery of CO2 in the flue gas of enterprises with small flue gas volume and loose distribution. It can also be used in large-scale CO2 resource recovery scenarios such as thermal power plants. The process and equipment are stable, reliable, flexible in operation, and have a high CO2 absorption conversion rate.

[0017] Optionally, the multi-point spray array assembly includes multiple rows of spray units, the spray units include a bracket, multiple absorption liquid pipes and multiple groups of atomizing nozzles, the end of the bracket can be detachably mounted on the inner wall of the flue gas atomization absorption liquid convergence pipe, the multiple absorption liquid pipes can be detachably mounted on the bracket, the multiple groups of atomizing nozzles are respectively installed at the nozzle mounting ports opened on the multiple absorption liquid pipes, and the multiple rows of spray units are staggered with each other.

[0018] Optionally, the multiple groups of atomizing nozzles of the multiple rows of spray units are all directed toward the flue gas duct.

[0019] By adopting the above technical solution, the structure of the multi-point spray array assembly can be at least one spray unit. In order to make the atomized absorption liquid contact with the flue gas more fully, it can be multiple rows of spray units, for example, three rows. The positions of the atomizing nozzles of the three rows of spray units are staggered, and the absorption liquid is supplied to multiple absorption liquid pipelines respectively through the main pipeline. Finally, the atomized absorption liquid is sprayed toward the flue gas pipeline through multiple groups of atomizing nozzles in the opposite direction of the flue gas flow, thereby increasing the relative velocity of gas and liquid and increasing the CO2 absorption rate.

[0020] Optionally, the condensation crystallization device includes a condensation crystallization tube, a chiller, a cold water coil and a high-speed centrifugal separator, the top opening of the condensation crystallization tube is connected to the liquid phase outlet at the bottom of the spherical shell, the cold water coil is installed around the inner wall of the condensation crystallization tube, the circulating water inlet and outlet of the chiller are connected to both ends of the cold water coil, a condensation channel is formed in the cold water coil, and the inlet of the high-speed centrifugal separator is connected to the bottom opening of the condensation crystallization tube through a pipe, which is used to perform solid-liquid phase separation on the solid-liquid mixture falling from the condensation channel.

[0021] Optionally, it also includes an absorption liquid recovery atomization device, which includes a stirring tank, an agitator, a heater and an atomizer. The inlet of the stirring tank is connected to the liquid phase outlet of the high-speed centrifuge through a pipeline. The agitator and the heater are respectively installed in the stirring tank. The inlet of the atomizer is connected to the outlet at the bottom of the stirring tank through a pipeline and a water pump. The outlet of the atomizer is connected to the absorption liquid inlet of the multi-point spray array assembly through a pipeline.

[0022] In summary, the present invention has at least one of the following beneficial technical effects:

[0023] The utility model can provide an atomizing cyclone crystallization device for CO2 resource recovery.

[0024] The atomizing cyclone crystallization device is used to realize the resource recovery of CO2 from the flue gas after dust removal and desulfurization treatment. The flue gas first contacts with the atomized absorption liquid sprayed by the multi-point spray array component to form a flue gas absorption liquid mixture. After entering the spherical cyclone, the flue gas absorption liquid mixture is cyclonic and gas-liquid phase separation occurs in the cyclonic state. After the gas-liquid phase separation, the liquid phase is condensed by the condensation crystallization device to obtain the solid phase product sodium bicarbonate and the liquid absorption liquid. The liquid absorption liquid is again temperature-controlled and atomized to provide absorption liquid for the multi-point spray array component.

[0025] It can realize the resource recovery of CO2 in the flue gas of enterprises with small flue gas volume and loose distribution. It can also be used in large-scale CO2 resource recovery scenarios such as thermal power plants. The process and equipment are stable, reliable, flexible in operation, and have a high CO2 absorption conversion rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the component connection principle of an atomizing cyclone crystallization device for CO2 resource recovery in the utility model;

[0027] Figure 2 The utility model is a schematic diagram of the connection of components of an atomizing cyclone crystallization device for CO2 resource recovery without the absorption liquid recovery atomizing device.

[0028] Figure 3 The utility model is a schematic diagram of the connection between the mist ball cyclone and the condensation crystallization device of the atomization cyclone crystallization device for CO2 resource recovery.

[0029] Figure 4 This is a schematic structural diagram of the flue gas inlet of a spherical shell of an atomizing cyclone crystallization device for CO2 resource recovery in the utility model;

[0030] Figure 5 This is a schematic diagram of the structure of a multi-point spray array component of an atomizing cyclone crystallization device for CO2 resource recovery in the utility model;

[0031] Figure 6 The utility model is a schematic diagram of the connection of components of an atomizing cyclone crystallization device for CO2 resource recovery, which is added with a concentration absorption tower and a deep absorption tower.

[0032] Explanation of the accompanying symbols: 11. Flue gas atomization absorption liquid confluence pipe; 12. Multi-point spray array assembly; 121. Bracket; 122. Absorption liquid pipe; 123. Atomizing nozzle; 131. Spherical shell; 132. Swirl guide plate; 133. Condensation demister; 134. Swirl blade; 141. Condensation crystallization tube; 142. Chiller; 143. Cold water coil; 144. High-speed centrifuge; 2. Concentration absorption tower; 3. Deep absorption tower; 431. Mixing tank; 432. Agitator; 44. Atomizer; 100. Flue gas pipe. DETAILED DESCRIPTION

[0033] The present invention will be described in further detail below with reference to the accompanying drawings.

[0034] The embodiment of the utility model discloses an atomizing cyclone crystallization device for CO2 resource recovery.

[0035] Reference Figure 1 - Figure 6 , Example 1, an atomizing cyclone crystallization device for CO2 resource recovery, comprising a spray air inlet device and a cyclone crystallization device;

[0036] The spray air inlet device includes a flue gas atomized absorption liquid confluence pipe 11 and a multi-point spray array assembly 12. The flue gas pipe 100 is connected to the flue gas atomized absorption liquid confluence pipe 11. The multi-point spray array assembly 12 is installed on the inner wall of the flue gas atomized absorption liquid confluence pipe 11 and is located at one end connected to the flue gas pipe 100.

[0037] The cyclone crystallization device includes a spherical cyclone and a condensation crystallization device;

[0038] The spherical cyclone includes a spherical shell 131, multiple swirl guide plates 132, a condenser demister 133, and swirl blades 134. A flue gas inlet is provided on one side of the spherical shell 131, a gas phase outlet is provided on the other side, and a liquid phase outlet is provided at the bottom. The swirl blades 134 are installed at the flue gas inlet of the spherical shell 131. Multiple swirl guide plates 132 are respectively installed on the inner wall of the spherical shell 131. The gaps between the multiple swirl guide plates 132 are used to guide the incoming flue gas absorption liquid mixture into a swirl state. The condenser demister 133 is installed at the gas phase outlet and protrudes into the interior of the spherical shell 131.

[0039] The condensation crystallization device is connected to the liquid phase outlet at the bottom of the spherical shell 131. After the liquid phase is condensed and crystallized, high-speed solid-liquid separation is performed to obtain a solid phase product and a liquid absorption liquid. The liquid absorption liquid is then temperature-controlled, adjusted, and atomized and connected to the inlet of the multi-point spray array assembly 12.

[0040] An atomizing cyclone crystallization device is used to realize the resource recovery of CO2 from the flue gas that has been treated with dust removal and desulfurization. When the flue gas enters, it first fully contacts with the atomized absorption liquid sprayed by the multi-point spray array component 12 to form a flue gas absorption liquid mixture. After entering the spherical cyclone, a swirl blade 134 is set at the flue gas inlet of the spherical shell 131, so that the flue gas is already in a swirl state when entering the spherical cyclone. The spherical shell 131 is matched with multiple swirl guide plates 132, and swirl guide grooves are formed between adjacent swirl guide plates 132. The rotation radius of the flue gas absorption liquid mixture gradually increases in the initial stage of the swirl, and gradually decreases after passing through the middle part of the spherical shell 131. The swirl diameter changes gradually, and the pressure along the spherical surface is greater than that near the center line, realizing the inlet and outlet gas diversion in a small space, reducing the proportion of direct short-circuit outflow of gas, and under the action of the internal swirl gas and the mainstream return gas, the mixing uniformity of the absorption liquid and the flue gas is improved, thereby improving the CO2 recovery rate. The condensing mist eliminator 133 protrudes into the interior of the spherical shell 131, and the protruding portion is generally set to reach one-quarter to one-third of the diameter of the spherical shell 131. The condensing array plates of the condensing mist eliminator 133 are V-shaped plates. The V-shaped plates of different layers are staggered, which can efficiently condense droplets. The droplets aggregate and grow larger and finally fall. The liquid phase is condensed by the condensation crystallization device to obtain a solid phase product and a liquid phase absorption liquid. The solid phase product is sodium bicarbonate. The liquid phase absorption liquid is again temperature-controlled and atomized to provide absorption liquid for the multi-point spray array assembly 12.

[0041] There will still be residual CO2 in the gas phase after gas-liquid separation in the spherical cyclone. Subsequently, one or more absorption towers can be set up to recover the residual CO2.

[0042] It can realize the resource recovery of CO2 in the flue gas of enterprises with small flue gas volume and loose distribution. It can also be used in large-scale CO2 resource recovery scenarios such as thermal power plants. The process and equipment are stable, reliable, flexible in operation, and have a high CO2 absorption conversion rate.

[0043] In embodiment 2, the multi-point spray array assembly 12 includes multiple rows of spray units, and the spray units include a bracket 121, multiple absorption liquid pipes 122 and multiple groups of atomizing nozzles 123. The end of the bracket 121 can be detachably mounted on the inner wall of the flue gas atomizing absorption liquid confluence pipe 11, and the multiple absorption liquid pipes 122 can be detachably mounted on the bracket 121. The multiple groups of atomizing nozzles 123 are respectively mounted on the nozzle mounting ports opened on the multiple absorption liquid pipes 122, and the multiple rows of spray units are staggered with each other.

[0044] In Example 3, the multiple groups of atomizing nozzles 123 of the multiple rows of spray units are all directed toward the flue gas duct 100 .

[0045] The structure of the multi-point spray array assembly 12 can be at least one spray unit. In order to make the atomized absorption liquid contact with the flue gas more fully, it can be multiple rows of spray units, for example, three rows. The positions of the atomizing nozzles 123 of the three rows of spray units are staggered, and the absorption liquid is supplied to multiple absorption liquid pipes 122 through the main pipe. Finally, the atomized absorption liquid is sprayed toward the flue gas pipe 100 through multiple groups of atomizing nozzles 123 in the opposite direction of the flue gas flow, thereby increasing the relative velocity between gas and liquid and increasing the CO2 absorption rate.

[0046] Example 5, the condensation crystallization device includes a condensation crystallization tube 141, a chiller 142, a cold water coil 143 and a high-speed centrifugal separator 144. The top opening of the condensation crystallization tube 141 is connected to the liquid phase outlet at the bottom of the spherical shell 131. The cold water coil 143 is installed around the inner wall of the condensation crystallization tube 141. The circulating water inlet and outlet of the chiller 142 are connected to both ends of the cold water coil 143. A condensation channel is formed in the cold water coil 143. The inlet of the high-speed centrifugal separator 144 is connected to the bottom opening of the condensation crystallization tube 141 through a pipeline, which is used to perform solid-liquid phase separation on the solid-liquid mixture falling from the condensation channel.

[0047] In Example 6, a chiller controller may be further provided to control the water temperature of the chiller 142 injected into the cold water coil 143 to be 5° C.-10° C.

[0048] The condensation crystallization device is based on a chiller 142 that provides cold water of 5°C-10°C to the condenser 141, so that the temperature of the absorption liquid in the condenser 143 is 10-15 degrees, and the liquid phase is condensed to obtain a solid product of sodium bicarbonate. During the condensation process, some absorption liquid remains in liquid state. The solid and liquid enter the high-speed centrifuge 144 together to achieve solid-liquid separation. The solid phase product is solid sodium bicarbonate, and the liquid absorption liquid flows into the subsequent absorption liquid circulation device for reuse, thereby efficiently realizing CO2 resource recovery, and the absorption liquid can be recycled repeatedly.

[0049] Example 7 also includes an absorption liquid recovery atomization device, which includes a stirring tank 431, an agitator 432, a heater and an atomizer 44. The inlet of the stirring tank 431 is connected to the liquid phase outlet of the high-speed centrifuge 144 through a pipeline. The agitator 432 and the heater are respectively installed in the stirring tank 431. The inlet of the atomizer 44 is connected to the outlet at the bottom of the stirring tank 431 through a pipeline and a water pump. The outlet of the atomizer 44 is connected to the absorption liquid inlet of the multi-point spray array assembly 12 through a pipeline.

[0050] The concentration of sodium bicarbonate in the absorption liquid at the liquid phase outlet of the high-speed centrifuge 144 becomes low. The heater needs to heat the temperature of the stirring tank 431 to 40°C-60°C. The stirrer 432 continuously stirs to dissolve the sodium bicarbonate for the second time. It can also replenish the absorption liquid loss to the stirring tank 431. The finally prepared absorption liquid passes through the atomizer 44. The atomizer 44 can be a two-phase flow atomizer or a single-phase flow atomizer. The atomized absorption liquid is again input into the multi-point spray array assembly 12, realizing the recycling of the recovered liquid.

[0051] Example 8, an atomization cyclone crystallization method for resource recovery of CO2 from combustion flue gas, employing an atomization cyclone crystallization device for resource recovery of CO2 to perform atomization cyclone crystallization to obtain a solid product, comprising the following steps:

[0052] Step 1: The flue gas to be recovered from CO2 is introduced from the flue gas pipe 100 into the flue gas atomized absorption liquid confluence pipe 11, and the multi-point spray array assembly 12 sprays the atomized absorption liquid to form a gas-liquid mixture which enters the spherical shell 131;

[0053] Step 2: After the first swirl guidance of the swirl blade 134, the gas-liquid mixture enters the guide groove between the multiple swirl guide plates 132, forming a spherical swirl attached to the inner wall of the spherical shell 131. The rotation radius of the swirl gradually increases at the beginning, and gradually decreases after passing through the middle of the spherical shell 131. The condenser demister 133 absorbs the droplets, and the droplets gradually grow and fall.

[0054] Step 4: After the gas-liquid separation, the liquid phase falls into the condensation crystallization tube 141. Under the cooling effect of the cold water coil 1435°C-10°C, the liquid phase temperature is adjusted to 10°C-15°C. The solid-liquid mixture formed by condensation and crystallization enters the high-speed centrifuge 144. The high-speed centrifuge 144 separates the solid-liquid mixture falling from the condensation channel into solid-liquid phases. The solid phase is the CO2 resource recovery product, and the liquid phase enters the spray absorption liquid adjustment device, which is heated and stirred to provide the absorption liquid for the atomizer 44.

[0055] Step 5: The atomizer 44 atomizes the absorption liquid and injects it into the multi-point spray array assembly 12.

[0056] In Example 9, in step 4, the heater of the spray absorption liquid adjustment device heats the liquid in the stirring tank 431 to 40°C-60°C.

[0057] In Example 10, the gas phase outlet of the spherical cyclone can also be connected to a concentration absorption tower 2. The concentration absorption tower 2 is provided with a secondary flue gas absorption inlet and a secondary flue gas outlet. The gas phase outlet of the spherical cyclone is connected to the secondary flue gas absorption inlet. The flue gas after multi-stage spray absorption is discharged through the secondary flue gas outlet.

[0058] A deep absorption tower 3 is connected behind the concentration absorption tower 2, and is provided with a residual flue gas absorption inlet and an exhaust gas outlet. The residual flue gas absorption inlet is connected to the secondary flue gas outlet of the concentration absorption tower 2, and the exhaust gas after multi-stage filler absorption is discharged from the exhaust gas outlet.

[0059] A specific application example involves CO2 recovery from flue gas at an aluminum ash recycling plant. The furnace is a rotary kiln, fueled by natural gas. The original flue gas purification process was: cyclone dust removal → SCR denitrification → bag filter → wet desulfurization. The operating flue gas volume was approximately 24,000 cubic meters per hour.

[0060] After being treated by the above-mentioned environmental protection facilities, the average concentration of CO2 in the flue gas is about 9%.

[0061] The atomization cyclone crystallization method for recycling CO2 in combustion flue gas of the utility model is used to recycle carbon dioxide from flue gas. The processing conditions are as follows:

[0062] Absorption crystallization section: The absorption liquid spray volume is 20 cubic meters per hour, and the sodium carbonate concentration in the absorption liquid is about 10%;

[0063] The gas phase outlet of the spherical cyclone is connected to the concentration absorption tower 2: the absorption liquid circulation spraying rate is 80 cubic meters per hour, and the sodium carbonate concentration in the absorption liquid is about 15%;

[0064] A deep absorption tower is connected after the concentration absorption tower 2: the absorption liquid circulation spraying volume is 60 cubic meters per hour, the sodium carbonate concentration in the absorption liquid is about 18%, and the sodium hydroxide concentration is about 3%.

[0065] After absorption treatment, the CO2 removal rate in the flue gas is about 97%, and the average CO2 concentration at the outlet is about 1.8g / cubic meter. The purity of the recovered sodium bicarbonate exceeds 95%, and the impurities are mainly sodium carbonate, accounting for about 4%.

[0066] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. An atomizing cyclone crystallization device for CO2 resource recovery, characterized by: It includes a spray air inlet device and a cyclone crystallization device; The spray air inlet device comprises a flue gas atomized absorption liquid confluence pipe (11) and a multi-point spray array assembly (12); the flue gas pipe (100) is connected to the flue gas atomized absorption liquid confluence pipe (11); the multi-point spray array assembly (12) is installed on the inner wall of the flue gas atomized absorption liquid confluence pipe (11) and is located at one end connected to the flue gas pipe (100); The cyclone crystallization device includes a spherical cyclone and a condensation crystallization device; The spherical cyclone comprises a spherical shell (131), a plurality of swirl guide plates (132), a condensing demister (133), and a swirl blade (134). A flue gas inlet is provided on one side of the spherical shell (131), a gas phase outlet is provided on the other side thereof, and a liquid phase outlet is provided at the bottom. The swirl blade (134) is installed at the flue gas inlet of the spherical shell (131). The plurality of swirl guide plates (132) are respectively installed on the inner wall of the spherical shell (131). The intervals between the plurality of swirl guide plates (132) are used to guide the incoming flue gas absorption liquid mixture into a swirl state. The condensing demister (133) is installed at the gas phase outlet and protrudes into the interior of the spherical shell (131). The condensation crystallization device is connected to the liquid phase outlet at the bottom of the spherical shell (131), and the liquid phase is condensed and crystallized, and then high-speed solid-liquid separation is performed to obtain a solid phase product and a liquid absorption liquid. The liquid absorption liquid is then temperature-controlled, adjusted, and atomized, and then connected to the inlet of the multi-point spray array component (12).

2. The atomizing cyclone crystallization device for CO2 resource recovery according to claim 1 is characterized in that: The multi-point spray array assembly (12) comprises multiple rows of spray units, each of which comprises a bracket (121), multiple absorption liquid pipes (122) and multiple groups of atomizing nozzles (123). The end of the bracket (121) is detachably mounted on the inner wall of a flue gas atomizing absorption liquid confluence pipe (11), the multiple absorption liquid pipes (122) are detachably mounted on the bracket (121), and the multiple groups of atomizing nozzles (123) are respectively mounted on nozzle mounting openings provided on the multiple absorption liquid pipes (122). The multiple rows of spray units are staggered.

3. The atomizing cyclone crystallization device for CO2 resource recovery according to claim 2, characterized in that: The multiple groups of atomizing nozzles (123) of the multiple rows of spray units are all directed toward the flue gas duct (100).

4. The atomizing cyclone crystallization device for CO2 resource recovery according to claim 3 is characterized in that: The spherical cyclone further comprises a swirl blade (134), and the swirl blade (134) is installed at the flue gas inlet of the spherical shell (131).

5. The atomizing cyclone crystallization device for CO2 resource recovery according to claim 4 is characterized in that: The condensation crystallization device includes a condensation crystallization tube (141), a chiller (142), a cold water coil (143) and a high-speed centrifugal separator (144). The top opening of the condensation crystallization tube (141) is connected to the liquid phase outlet at the bottom of the spherical shell (131). The cold water coil (143) is installed around the inner wall of the condensation crystallization tube (141). The circulating water inlet and outlet of the chiller (142) are connected to both ends of the cold water coil (143). A condensation channel is formed in the cold water coil (143). The inlet of the high-speed centrifugal separator (144) is connected to the bottom opening of the condensation crystallization tube (141) through a pipeline, which is used to separate the solid-liquid phase of the solid-liquid mixture falling from the condensation channel.

6. The atomizing cyclone crystallization device for CO2 resource recovery according to claim 5, characterized in that: The invention also includes an absorption liquid recovery atomization device, which includes a stirring tank (431), an agitator (432), a heater and an atomizer (44). The inlet of the stirring tank (431) is connected to the liquid phase outlet of the high-speed centrifugal separator (144) through a pipeline. The agitator (432) and the heater are respectively installed in the stirring tank (431). The inlet of the atomizer (44) is connected to the outlet at the bottom of the stirring tank (431) through a pipeline and a water pump. The outlet of the atomizer (44) is connected to the absorption liquid inlet of the multi-point spray array assembly (12) through a pipeline.

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