A high gravity coupling impinging stream reactor desulfurization and decarbonization device

Abstract

The utility model relates to a kind of desulfurization and decarbonization device, supergravity impinging stream device is rotated by motor, under the action of centrifugal force, absorption liquid reaches impact area by flowing through main pipeline and sleeve pipe outside main pipeline, in impact area, it is equipped with 4 groups of impinging stream, the center of its circular nozzle is distributed on the same circle, using the surrounding arrangement of 4 groups of impinging stream, multiple impingements occur, impingement forms four primary impingement surfaces, radial jet flow two two mutual impingement forms four secondary impingement surfaces, under non-submerged condition, absorption liquid forms atomized radial diffusion zone, produces large-area atomized absorption liquid, and supergravity impinging stream device further stirs flue gas and atomized absorption liquid in the process of rotation, so that atomized absorption liquid in shell and gas are fully mixed and contacted, complete gas-liquid absorption process, realize efficient desulfurization and decarbonization.

Description

Technical Field

[0001] This utility model relates to a desulfurization and carbon removal device, specifically a desulfurization and carbon removal device for a supergravity coupled impingement flow reactor. Background Technology

[0002] Currently, flue gas desulfurization and decarbonization mainly adopt wet methods, which involve contacting the flue gas with alkaline liquid in a spray tower or absorption tower, so that the alkaline liquid absorbs sulfur dioxide and carbon dioxide in the flue gas and generates carbonates, sulfites or sulfates.

[0003] Chinese patent CN202410037364.0 discloses an integrated method for flue gas desulfurization, denitrification, and decarbonization based on a hypergravity reactor. The system includes: a secondary thin-plate hypergravity treatment device; an ammonia water dosing pipeline; an absorbent detection device; a flue gas detection device; a series return gas branch; a flue gas emission branch; and a main flue gas emission route. When the flue gas detection device detects that the flue gas is substandard, the flue gas enters the upper-level series-connected secondary thin-plate hypergravity treatment device for secondary treatment via the series return gas branch. By utilizing multiple stages of secondary thin-plate hypergravity treatment devices in coordination, the energy consumption for flue gas treatment decreases as the amount of flue gas treated decreases, solving the problem of efficient and low-energy-consumption treatment of steel plant tail gas under unpredictable conditions.

[0004] Chinese patent CN202510519780.9 discloses a tower-type carbon dioxide absorption device based on a rotating packing structure. By optimizing the structural design of the absorption tower and opening an inspection door on the side of the tower, the area requiring packing replacement is rotated to the inspection door, solving the shortcomings of traditional absorption towers where the internal packing is difficult to assemble and replace. Gravity causes the absorbent liquid to flow downwards, forming a countercurrent with the carbon dioxide-containing gas. The rotation of the liquid distributor is controlled by adjusting the structure to improve the spraying effect. Simultaneously, the centrifugal force of the liquid spray is controlled by adjusting the rotation speed, thus controlling the spray angle and making the absorbent liquid more evenly distributed across the cross-section of the tower. This ensures sufficient contact between the absorbent and the rising carbon dioxide-containing gas, increasing the gas-liquid contact area and contact time, thereby improving the carbon dioxide absorption efficiency and reducing wall flow, thus improving the overall performance of the absorption tower.

[0005] Chinese patent CN202510405344.9 discloses a multi-layer filtration flue gas desulfurization device. This device employs a multi-layer stacked cylindrical design, with a spraying mechanism and a filtration mechanism housed within each cylinder. The filter units within the filtration mechanism can be easily replaced via a replacement port, reducing downtime for the desulfurization device. Furthermore, through the coordinated design of a closed control component and a connected control component, the contact time between the flue gas and the filter units can be controlled, thereby improving the flue gas filtration effect and ultimately enhancing the flue gas desulfurization efficiency.

[0006] Impact flow, as a novel mixing method, is widely used in the chemical industry. Its main characteristic is the generation of a highly turbulent region in the impact zone through the collision of two high-speed fluids, thereby enhancing interphase transfer and promoting micro-mixing. Under non-immersion conditions, liquid-liquid impact flow creates a highly turbulent and chaotic flow state in the impact zone. The impact process efficiently converts kinetic energy into turbulent kinetic energy, resulting in a high energy dissipation rate, promoting droplet breakup and interface renewal, and dispersing the liquid into micron-sized droplets or filaments, increasing the specific surface area by 1-2 orders of magnitude compared to traditional mixing methods. This method combines the droplet breakup and atomization characteristics of liquid-liquid impact flow under non-immersion conditions to improve the contact area between the gas and the absorbent. A method and device for gas-liquid absorption desulfurization and carbon removal using a supergravity-coupled impact flow structure is proposed for the application of impact structures in the field of gas-liquid absorption.

[0007] The core principle of rotating hypergravity technology is to generate a centrifugal force field through a high-speed rotating rotor, thereby significantly enhancing the mass transfer, mixing, and separation processes between gas and liquid or liquid and solid in a hypergravity environment. Its technical characteristics include: highly efficient mass transfer, with fluids being sheared into micron-sized droplets or thin films; compact equipment; energy efficiency and flexibility; and wide range of applications, covering fields such as chemical separation, nanomaterial preparation, flue gas dust removal, and energy desulfurization. Summary of the Invention

[0008] The purpose of this invention is to provide a desulfurization and carbon removal device for a supergravity coupled impact flow reactor. This device is based on supergravity coupled impact flow technology. Supergravity technology provides the impact flow with a high initial momentum of impact, and the impact flow technology enables the absorbent liquid to be fully atomized, increasing the gas-liquid contact area, enhancing gas-liquid absorption, and improving absorption efficiency. It has a significant effect on the treatment of sulfur- and carbon-containing flue gas in energy, metallurgy and other fields.

[0009] The objective of this utility model is achieved through the following technical solution:

[0010] A desulfurization and carbon removal device for a supergravity coupled impact flow reactor, the device comprising a supergravity impact flow device, a motor, and a shell; the impact flow device is provided with a liquid inlet, a rotating shaft, and symmetrically arranged pipes, the supergravity impact flow device is rotated by the motor, and the shell and the supergravity impact flow device are connected by a mechanical seal for relative sliding, the supergravity impact flow device is connected to the pipes; the pipes include a horizontally arranged main pipe covered by a sleeve, the main pipe is connected to a cross cavity, the cross cavity has four circular nozzles with the same center on the same circle near the rotating shaft, and the sleeve nozzles are also provided at corresponding positions on the sleeve, the main pipe is connected to the cross cavity, and the nozzles are connected to the sleeve nozzles; the shell sidewall is provided with an air inlet, the upper end is provided with an exhaust port, and the lower end is provided with a liquid outlet.

[0011] The aforementioned desulfurization and carbon removal device for a supergravity coupled impact flow reactor is described in which the inlet pump 8 and the storage tank 7 are connected to the supergravity impact flow device via the inlet pump 8 and the electromagnetic flow meter 10.

[0012] The aforementioned desulfurization and carbon removal device for a supergravity coupled impact flow reactor has four sets of circumferentially arranged impact surfaces, which form four secondary impact surfaces in pairs of radial jets.

[0013] The significant features and positive effects of this utility model are:

[0014] 1. This utility model applies supergravity impact flow technology to flue gas absorption in the energy and metallurgical fields. Specifically, it is a method of gas-liquid absorption desulfurization and carbon removal that couples supergravity technology and impact flow technology to enhance gas-liquid absorption and improve absorption efficiency.

[0015] 2. This invention utilizes the immense centrifugal force generated by hypergravity technology to provide extremely high initial momentum for the impacting flow. This allows a highly turbulent, high momentum exchange zone to form at the impact surface, atomizing the liquid into fine droplets. The large-volume impact mist surface formed around the impact surface significantly increases the contact area between the absorbent liquid and the flue gas.

[0016] 3. This invention utilizes supergravity coupled impact flow technology, which provides a higher initial momentum through supergravity technology. Compared with traditional gravity spray absorption, the mixing speed of the absorbent liquid and flue gas is greatly improved.

[0017] 4. This invention utilizes ultragravity coupled impact flow technology, resulting in a simple, safe, and reliable structure. It eliminates the need for the packing structure of traditional rotating packed beds and the bulky and complex spray absorption structure of traditional absorption towers. Attached Figure Description

[0018] Figure 1 This is a combined structural diagram of the present invention;

[0019] Figure 2 This is a top view of the supergravity impact flow device of this utility model;

[0020] Figure 3 This is a front view of the supergravity impact flow device of this utility model.

[0021] In the diagram: 1. Hypergravity impact flow device; 2. Housing; 3. Motor; 4. Mechanical seal; 5. Gas storage bottle; 6. Air inlet; 7. Liquid storage tank; 8. Liquid inlet pump; 9. Throttling valve; 10. Electromagnetic flow meter; 11. Pressure gauge; 12. Gas collection bottle; 13. Exhaust port; 14. Liquid outlet; 15. Liquid collection tank; 1-1. Cross cavity; 1-2. Circular nozzle; 1-3. Sleeve; 1-4. Main pipeline; 1-5. Liquid inlet; 1-6. Rotating shaft. Detailed Implementation

[0022] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0023] As shown in the figure, the hypergravity impact flow device is driven to rotate by a motor and has a liquid inlet, a rotating shaft, and symmetrically arranged pipes. The pipes consist of a horizontally arranged main pipe and a sleeve covering the main pipe. The main pipe connects to a cross-shaped cavity, which has four circular nozzles with their centers on the same circle near the rotating shaft. Similarly, four circular sleeve nozzles with their centers on the same circle are located at corresponding positions on the sleeve. The side wall of the casing has an air inlet, the upper end has an exhaust outlet, and the lower end has a liquid outlet.

[0024] The supergravity impactor flow device is driven by a motor to rotate, utilizing the centrifugal force generated by the rotation to provide a high initial momentum for the impacting flow. The absorbent liquid flows through the main pipe and the outer sleeve to the impact zone. In the impact zone, there are four sets of impacting flows, with the centers of their circular nozzles distributed on the same circle. The surrounding arrangement of these four sets of impacting flows results in multiple impacts, forming four primary impact surfaces. The radial jets collide with each other in pairs, forming four secondary impact surfaces. Under non-immersion conditions, the absorbent liquid forms an atomized radial diffusion zone, producing a large area of ​​atomized absorbent liquid. Simultaneously, due to the centrifugal force, a larger diffusion zone volume is generated during the outward expansion of the radial diffusion zone, significantly increasing the contact area between the gas and the absorbent liquid. Furthermore, the supergravity impactor flow device agitates the absorbent liquid and flue gas during rotation, further ensuring thorough mixing and enhancing gas-liquid absorption.

[0025] In operation, the present invention first turns on the inlet pump 8, and the absorbent liquid enters the supergravity impact flow device 1 from the storage tank 7 via the inlet pump 8 and the electromagnetic flowmeter 10 through the inlet 1-5. After the liquid level in the supergravity impact flow device 1 rises to a certain level, the motor 3 is started, and the supergravity impact flow device 1 is rotated by the motor 3. The centrifugal force generated by the rotation provides a high initial momentum for the impact flow. The absorbent liquid gathers from the internal cavity of the supergravity impact flow device 1 to the surrounding walls and enters the main pipe 1-4 and the sleeve 1-3. The absorbent liquid in the main pipe 1-4 flows out through the cross cavity 1-1 through the circular nozzle 1-2, and the absorbent liquid in the sleeve 1-3 also flows out through the corresponding circular sleeve nozzle 1-2. The two opposing fluids form an impact flow. Subsequently, the valve 9 is opened, and the gas from the gas storage bottle 5 enters the shell 2 through the gas inlet 6 via the pressure gauge 11 to begin the reaction. In the impact zone, four sets of impacting streams are arranged in a surrounding pattern, resulting in multiple impacts that form four primary impact surfaces. The radial jets collide with each other in pairs, forming four secondary impact surfaces. Under non-immersion conditions, the absorbent liquid forms a radially diffused atomized zone, producing a large-area atomized absorbent liquid. Simultaneously, due to centrifugal force, a larger diffusion zone volume is generated during the outward expansion of the radial diffusion zone, significantly increasing the contact area between the gas and the absorbent liquid. Furthermore, the high-gravity impacting stream device 1 further agitates the gas and atomized absorbent liquid during rotation, ensuring thorough mixing and enhancing gas-liquid absorption. After gas absorption is complete, the absorbent liquid inside the device can be discharged from the drain port 14 at the bottom of the shell 2 into the collection tank 15. The purified gas is discharged from the exhaust port 13 at the top of the shell and enters the gas collection bottle 12. Finally, a sample is taken from the gas collection bottle 12 for testing. If the gas quality meets the emission standards, it is then discharged. Example 1

[0026] In this embodiment, NaOH aqueous solution is used to treat SO2 concentration of 6000 mg / m³. 3Flue gas with a CO2 volume concentration of 13% undergoes desulfurization and carbon removal treatment. After assembling the device, the power is connected. The NaOH aqueous solution in the storage tank 7 is regulated by the electromagnetic flowmeter 10 and then enters the hypergravity impact flow device 1 through the inlet 1-5 via the inlet pump 8. Once the NaOH aqueous solution level in the hypergravity impact flow device 1 reaches a certain level, the motor 3 is started, causing the hypergravity impact flow device 1 to rotate. The centrifugal force generated by the rotation provides a high initial momentum for the impact flow. The NaOH aqueous solution gathers from the internal cavity of the hypergravity impact flow device 1 towards the surrounding walls, entering the main pipe 1-4 and the sleeve 1-3. The NaOH aqueous solution in the main pipe 1-4 flows out through the cross cavity 1-1 and the nozzle 1-2, while the NaOH aqueous solution in the sleeve 1-3 also flows out from the corresponding sleeve nozzle 1-2. The two opposing fluids form an impact flow. Subsequently, the valve is opened, and gas containing CO2 and SO2 enters the shell 2 through the inlet via the pressure gauge 11. In the impact zone, four sets of impacting streams are arranged, with the centers of their circular nozzles 1-2 distributed on the same circle. Utilizing the circumferential arrangement of these four sets of impacting streams, multiple impacts occur, forming four primary impact surfaces. The radial jets collide with each other in pairs, forming four secondary impact surfaces. Under non-immersion conditions, the NaOH aqueous solution forms an atomized radial diffusion zone, generating a large-area atomized absorbent liquid. Simultaneously, due to centrifugal force, the diffusion zone expands outward, generating a larger diffusion zone volume, significantly increasing the contact area between the CO2 and SO2-containing gas and the atomized NaOH aqueous solution. Furthermore, the high-gravity impacting stream device 1 further agitates the CO2 and SO2-containing gas and the atomized NaOH aqueous solution during rotation, ensuring thorough mixing and enhancing gas-liquid absorption. After gas absorption is complete, the NaOH aqueous solution inside the device can be discharged from the drain port 14 at the bottom of the shell 2 into the collection tank 15. The purified gas is discharged from the exhaust port 13 at the top of the shell and enters the gas collecting bottle 12. The absorbed gas was continuously collected and tested, and the results showed that the SO2 concentration in the flue gas was 24 mg / m³. 3 The absorption efficiency reached 99.6%, the CO2 volume concentration was 1.1%, and the absorption rate reached 91.5%, which meets the gas emission standards.

[0027] Comparative Example 1

[0028] Using NaOH aqueous solution, for SO2 concentration of 6000 mg / m³ 3 The flue gas underwent desulfurization treatment. Detection of pollutant concentrations at the flue gas emission outlet showed that the SO2 concentration in the flue gas was 216 mg / m³. 3 The absorption efficiency reaches 96.4%.

[0029] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A desulfurization and decarbonization device for a supergravity coupled impinging flow reactor, characterized in that, The device includes a hypergravity impact flow device, a motor, and a housing. The impact flow device has a liquid inlet, a rotating shaft, and symmetrically arranged pipes. The hypergravity impact flow device is rotated by the motor. The housing and the hypergravity impact flow device slide relative to each other by means of a mechanical seal. The hypergravity impact flow device is connected to the pipes. The pipes include a horizontally arranged main pipe covered by a sleeve. The main pipe is connected to a cross cavity. The cross cavity has four circular nozzles with their centers on the same circle near the rotating shaft. Similarly, four sleeve nozzles with their centers on the same circle are provided at corresponding positions on the sleeve. The main pipe is connected to the cross cavity, and the nozzles are connected to the sleeve nozzles. The housing has an air inlet on its side wall, an exhaust outlet at its upper end, and a liquid outlet at its lower end.

2. The desulfurization and decarbonization device for a supergravity coupled impact flow reactor according to claim 1, characterized in that, The device's inlet pump and storage tank are connected to the supergravity impact flow device via the inlet pump and electromagnetic flow meter.

3. The desulfurization and decarbonization device for a supergravity coupled impact flow reactor according to claim 1, characterized in that, The impact flow device has four sets of surrounding impact surfaces, which form four secondary impact surfaces in pairs with each other in a radial jet.

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