Desulfurization absorption system and method for thermal power generation

Abstract

The desulfurization absorption system comprises an absorption tank and a control valve, an inner transverse partition plate and an inner vertical partition plate are arranged in the absorption tank, and the inner vertical partition plate and the inner transverse partition plate divide the absorption tank into a lower mixing bin, a first detection bin and an absorption bin; the absorption tank is internally provided with a flue gas leading-in assembly, the flue gas leading-in assembly comprises a mixing unit and a flue gas leading-in unit, the mixing unit is connected to the two sides of the lower mixing bin, and the flue gas leading-in unit is arranged between the lower mixing bin and the first detection bin in a penetrating mode and can lead mixed flue gas and air into the absorption bin; the absorbent introduction assembly is arranged on one side of the absorption tank and can introduce the limestone absorbent into the absorption bin; the flue gas output flow velocity of different areas can be kept consistent, the flue gas output nozzles and the spraying nozzles are symmetrically arranged at a short distance, full contact of flue gas and an absorbent is ensured through the mixing adjusting part, and the desulfurization efficiency and quality are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of desulfurization absorption, and in particular to a desulfurization absorption system and method for thermal power generation. Background Art

[0002] Flue gas desulfurization (FGD) in thermal power generation is a crucial process for removing waste gas from processed products. Existing FGD systems mostly utilize gypsum desulfurization. This involves mixing limestone with water to create an absorbent. The absorbent is typically sprayed into the absorption tower via a spray system. However, the design of the spray layer must fully consider the impact of uneven flue gas flow. The spray system layout within the desulfurization absorption tower requires careful consideration. Existing technologies typically prioritize high-velocity nozzle placement in areas with high gas flow rates and minimize nozzle placement in areas with low gas flow rates.

[0003] However, in the existing desulfurization absorption tower, it is impossible to ensure that the gas flow rate in a fixed area remains consistent, and the spraying equipment cannot be adjusted according to the change in gas flow rate, which causes the flue gas and absorbent to contact and replenish, resulting in absorbent waste and insufficient flue gas desulfurization. In addition, the spraying equipment is generally arranged in multiple layers, and the required spraying equipment is large and the cost is high. Summary of the Invention

[0004] The technical problem of the present invention is to provide a desulfurization absorption system and method for thermal power generation, so as to maintain the flue gas output flow rate in different areas as consistent as possible, and the flue gas output nozzle and the spray nozzle are symmetrically arranged at a close distance, and the mixing adjustment part is used to ensure that the flue gas and the absorbent are fully in contact, thereby improving the desulfurization efficiency and quality.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a desulfurization absorption system for thermal power generation, comprising an absorption tank and a control valve, wherein the absorption tank is provided with an inner transverse partition and an inner vertical partition, wherein the inner vertical partition and the inner transverse partition divide the absorption tank into a lower mixing chamber, a first detection chamber, and an absorption chamber, and wherein the absorption tank is provided with:

[0006] A smoke introduction component, comprising a mixing unit and a smoke introduction unit, wherein the mixing unit is connected to both sides of the lower mixing chamber and can introduce smoke and air into the lower mixing chamber in proportion for mixing. The smoke introduction unit is disposed between the lower mixing chamber and the first detection chamber and can introduce the mixed smoke and air into the absorption chamber;

[0007] An absorbent introduction component is provided on one side of the absorption tank and is capable of introducing limestone absorbent into the absorption chamber. The flue gas introduction unit and the absorbent introduction component are symmetrically arranged;

[0008] A mixing adjustment member is provided in the absorption chamber so that the flue gas and the absorbent are mixed more evenly.

[0009] As a further solution of the present invention, the inner vertical partition is arranged in the absorption tank, and horizontal connecting plates are fixedly installed on the upper and lower ends of the inner vertical partition. The upper horizontal connecting plate and the upper end of the absorption tank form a second detection chamber, and the lower horizontal connecting plate and the lower end of the absorption tank form an absorbent sedimentation pool. An inner horizontal partition is fixedly installed between the upper and lower groups of horizontal connecting plates. The lower side of the inner horizontal partition is the lower mixing chamber, and the upper side is the first detection chamber. An inner one-way valve is fixedly installed on the inner horizontal partition, and a sealing plate is fixedly installed on the upper horizontal connecting plate. An absorption chamber is formed between the inner vertical partition, the inner wall of the absorption tank and the sealing plate.

[0010] As a further solution of the present invention, the mixing unit includes a smoke inlet pipe and an air inlet pipe, which are connected to both sides of the lower mixing bin. The smoke inlet pipe and the air inlet pipe are fixedly installed with control valves, and the control valves adjust the cross-sectional area of the channel. The smoke inlet unit includes an inner smoke pipe, which passes through the inner horizontal partition up and down. A suction pump is fixedly installed on the upper end of the inner smoke pipe. A plurality of groups of smoke output nozzles are evenly arranged on the inner smoke pipe, and one end of the smoke output nozzle passes through the inner vertical partition and extends into the absorption bin.

[0011] As a further solution of the present invention, the absorbent introduction assembly includes a side mounting pipe, which is arranged outside the absorption tank, and a circulation pump is fixedly installed on the upper end of the side mounting pipe. The lower end of the side mounting pipe is connected to a gasification device, and multiple groups of gasification spray parts are vertically and evenly connected to the side mounting pipe. One end of the gasification spray part is introduced into the absorption bin, and the gasification spray part and the flue gas outlet nozzle are symmetrically distributed on both sides of the absorption bin.

[0012] As a further solution of the present invention, the mixing adjustment member includes a rotating member, which is a hollow cylindrical tube and the lower end is set to be open. The upper end of the rotating member is rotatably connected to the sealing plate. An exhaust pipe is fixedly installed on the sealing plate corresponding to the position inside the rotating member. The upper end of the exhaust pipe extends into the second detection chamber. Multiple groups of condensation tubes are fixedly installed on the inner wall of the rotating member. The outer side of the rotating member is an insulation layer. A driving assembly is fixedly installed on the sealing plate, and the driving assembly can drive the rotating member to rotate.

[0013] As a further solution of the present invention, a gas detector is provided in each of the first detection chamber and the second detection chamber, and the gas detector can check the sulfur content in the gas. A return pipe is fixedly installed on one side of the second detection chamber, and the lower end of the return pipe is introduced into the lower mixing chamber. A desulfurization flue gas pipe is fixedly installed on the upper end of the absorption tank, and control valves are fixedly installed on the desulfurization flue gas pipe and the return pipe.

[0014] As a further solution of the present invention, a helium storage tank is fixedly installed on one side of the absorption tank, a side connecting pipe is fixedly installed on one side of the helium storage tank, an external connecting pipe is fixedly installed on the side connecting pipe, the upper and lower ends of the external connecting pipe are embedded in the side mounting pipe, control valves are provided at the upper and lower ends of the external connecting pipe, and a negative pressure pump is fixedly installed on the side connecting pipe.

[0015] A desulfurization absorption method for thermal power generation, the specific steps of the desulfurization absorption method are as follows:

[0016] Step 1: Add flue gas and external air to the lower mixing chamber through the flue gas inlet pipe and the air inlet pipe respectively for mixing;

[0017] Step 2: The flue gas mixed with air enters the first detection chamber through the inner one-way valve. After the sulfur content is tested in the first detection chamber, the flue gas enters the absorption chamber through the suction pump and the inner flue gas pipe;

[0018] Step 3: The absorbent is input into the absorption chamber through the side installation pipe and the gasification spray piece;

[0019] Step 4: The rotating part in the absorption chamber rotates to make the flue gas and the absorbent more evenly mixed, and the sulfur dioxide in the flue gas reacts with the calcium carbonate in the absorbent to form calcium sulfate;

[0020] Step 5: After the reaction is sufficient, the helium in the helium storage tank is introduced into the absorption chamber through the external connecting pipe and the side installation pipe, so that the helium squeezes the desulfurized flue gas to sink, and the desulfurized flue gas enters the interior of the rotating part from the lower end of the rotating part, and is then discharged from the exhaust pipe into the second detection chamber.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. In the present invention, the flue gas and air are mixed in the lower mixing chamber to initially maintain the stability of the flue gas. Then, after the flue gas enters the first detection chamber, the gas flow rate of the flue gas is further stabilized, thereby making the flue gas flow rate from the flue gas introduction unit to the suction chamber basically stable, thereby making the gas flow rate in different areas of the absorption chamber uniform, making the mixing of flue gas and absorbent more uniform, and avoiding the problem of uneven gas flow rate distribution caused by the flue gas and air being separately input into the absorption tower to react with the absorbent.

[0023] 2. The driving assembly in the present invention is composed of a rotating motor and two sets of gears. The two sets of gears are meshed with each other. One set of gears is fixedly connected to the rotating member, and the other set of gears is fixedly connected to the output end of the rotating motor. The rotating motor drives the rotating member to rotate. The rotating member rotates so that the air above and below the absorption bin maintains the same gas flow rate, avoiding the trouble of setting up multi-layer spraying equipment and reducing the cost of the spraying equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 This is a schematic diagram of the structure of the present invention from a front side perspective;

[0026] Figure 2 This is a schematic diagram of the rear side perspective structure of the present invention;

[0027] Figure 3 The structure of the present invention is cut away Figure 1 ;

[0028] Figure 4 For the present invention Figure 3 A partial schematic diagram of the structure at point A;

[0029] Figure 5 The structure of the present invention is cut away Figure 2 ;

[0030] Figure 6 The structure of the present invention is cut away Figure 3 ;

[0031] Figure 7 This is the absorption flow chart of the present invention.

[0032] The accompanying figures are as follows:

[0033] 1. Absorption tank; 2. Desulfurization flue gas pipe; 3. Helium storage tank; 4. Flue gas inlet pipe; 5. Air inlet pipe; 6. Side connecting pipe; 7. External connecting pipe; 8. Circulation pump; 9. Side mounting pipe; 10. Control valve; 11. Gasification spray element; 12. Inner horizontal partition; 13. Inner one-way valve; 14. Lower mixing chamber; 15. First detection chamber; 16. Inner flue gas pipe; 17. Inner vertical partition; 18. Horizontal connecting plate; 19. Flue gas outlet nozzle; 20. Rotating part; 21. Sealing plate; 22. Discharge pipe; 23. Suction pump; 24. Absorption chamber; 25. Reflux pipe; 26. Condenser. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] See also Figure 1-Figure 7 The present invention provides a technical solution: a desulfurization absorption system for thermal power generation, comprising an absorption tank 1 and a control valve 10. The absorption tank 1 is provided with an inner transverse partition 12 and an inner vertical partition 17. The inner vertical partition 17 and the inner transverse partition 12 divide the absorption tank 1 into a lower mixing chamber 14, a first detection chamber 15 and an absorption chamber 24. The absorption tank 1 is provided with:

[0036] The smoke introduction component includes a mixing unit and a smoke introduction unit. The mixing unit is connected to both sides of the lower mixing chamber 14. The mixing unit can introduce smoke and air into the lower mixing chamber 14 in proportion for mixing. The smoke introduction unit is arranged between the lower mixing chamber 14 and the first detection chamber 15 and can introduce the mixed smoke and air into the absorption chamber 24.

[0037] The absorbent introduction component is arranged on one side of the absorption tank 1 and can introduce the limestone absorbent into the absorption chamber 24. The flue gas introduction unit and the absorbent introduction component are symmetrically arranged;

[0038] A mixing adjustment member is provided in the absorption chamber 24 so that the flue gas and the absorbent are mixed more evenly.

[0039] During operation, the present invention divides the absorption tank 1 into a lower mixing chamber 14, a first detection chamber 15 and an absorption chamber 24. The flue gas and air are mixed in the lower mixing chamber 14 in advance, and then introduced into the first detection chamber 15. After the sulfur content is detected in the first detection chamber 15, the flue gas is introduced into the absorption chamber 24 through the flue gas introduction unit. In the present invention, the flue gas and air are mixed through the lower mixing chamber 14 to initially maintain the stability of the flue gas. Then, after the flue gas enters the first detection chamber 15, the gas flow rate of the flue gas is further stabilized, so that the flue gas flow rate input from the flue gas introduction unit to the suction chamber is basically stable, thereby making the gas flow rate in different areas of the absorption chamber 24 uniform, making the mixing of the flue gas and the absorbent more uniform, and avoiding the problem of uneven gas flow rate distribution due to the flue gas and air being input separately into the absorption tower to react with the absorbent. After the flue gas and absorbent are introduced into the absorption chamber 24, the present invention outputs the flue gas and absorbent at uniform flow rates relative to each other, thereby ensuring uniform distribution of the flue gas and absorbent within the absorption chamber 24 (the flue gas outlet nozzle 19 and the gasification spray element 11 are both uniformly distributed longitudinally). This allows the flue gas and absorbent to fully contact and mix, allowing the absorbent to undergo a redox reaction with sulfur dioxide in the flue gas to remove sulfur from the flue gas. The mixing adjustment element within the absorption chamber 24 maintains a consistent air flow rate in the upper and lower spaces of the absorption chamber 24, thereby avoiding the problem of uneven flue gas desulfurization.

[0040] As a further solution of the present invention, an inner vertical partition 17 is arranged in the absorption tank 1, and horizontal connecting plates 18 are fixedly installed on the upper and lower ends of the inner vertical partition 17. The upper horizontal connecting plate 18 and the upper end of the absorption tank 1 form a second detection chamber, and the lower horizontal connecting plate 18 and the lower end of the absorption tank 1 form an absorbent sedimentation pool. An inner horizontal partition 12 is fixedly installed between the upper and lower groups of horizontal connecting plates 18. The lower side of the inner horizontal partition 12 is the lower mixing chamber 14, and the upper side is the first detection chamber 15. An inner one-way valve 13 is fixedly installed on the inner horizontal partition 12, and a sealing plate 21 is fixedly installed on the upper horizontal connecting plate 18. An absorption chamber 24 is formed between the inner vertical partition 17, the inner wall of the absorption tank 1 and the sealing plate 21.

[0041] During operation, the absorbent remaining in the absorption bin 24 of the present invention falls into the sedimentation pool below the lower connecting plate 18 under the action of gravity, and the absorbent can be recovered through a recovery pipe (not shown in the figure), so that the absorbent returns to the external gasification device, and the mixed flue gas in the lower mixing bin 14 is input into the first detection bin 14 through the internal one-way valve 13.

[0042] As a further solution of the present invention, the mixing unit includes a flue gas inlet pipe 4 and an air inlet pipe 5, which are connected on both sides of the lower mixing bin 14. The flue gas inlet pipe 4 and the air inlet pipe 5 are fixedly installed with a control valve 10, which adjusts the cross-sectional area of the channel. The flue gas inlet unit includes an inner flue gas pipe 16, which passes through the inner horizontal partition 12 up and down. A suction pump 23 is fixedly installed on the upper end of the inner flue gas pipe 16. A plurality of groups of flue gas output nozzles 19 are evenly arranged on the inner flue gas pipe 16, and one end of the flue gas output nozzle 19 passes through the inner vertical partition 17 and extends into the absorption bin 24.

[0043] During operation, the added flue gas in the present invention can enter the lower mixing bin 14 through the flue gas inlet pipe 4, and the external air can enter the lower mixing bin 14 through the air inlet pipe 5. The cross-sectional area of the channel is adjusted by the control valve 10 of the flue gas inlet pipe 4 and the air inlet pipe 5, thereby controlling the mixing ratio of the flue gas and air in the lower mixing bin 14 to ensure sufficient oxygen content in the flue gas and sufficient desulfurization reaction.

[0044] As a further solution of the present invention, the absorbent introduction assembly includes a side mounting pipe 9, which is arranged outside the absorption tank 1. A circulation pump 8 is fixedly installed on the upper end of the side mounting pipe 9, and a gasification device is connected to the lower end of the side mounting pipe 9. Multiple groups of gasification spray parts 11 are vertically and evenly connected to the side mounting pipe 9. One end of the gasification spray part 11 is introduced into the absorption bin 24, and the gasification spray part 11 and the flue gas outlet nozzle 19 are symmetrically distributed on both sides of the absorption bin 24.

[0045] During operation, the present invention drives the absorbent into the side installation pipe 9 through the circulation pump 8, and then sprays the absorbent from the multiple groups of gasification spray parts 11 into the absorption bin 24 through the side installation pipe 9. The gasification spray parts 11 and the output nozzles 19 are symmetrically arranged, so that the flue gas and the absorbent are output symmetrically, so that the flue gas and the absorbent are fully contacted, avoiding the problem of incomplete desulfurization due to insufficient foundation.

[0046] As a further solution of the present invention, the mixing adjustment member includes a rotating member 20, which is a hollow cylindrical tube and the lower end is set to be open. The upper end of the rotating member 20 is rotatably connected to the sealing plate 21, and an exhaust pipe 22 is fixedly installed on the sealing plate 21 at a position corresponding to the position inside the rotating member 20. The upper end of the exhaust pipe 22 extends into the second detection chamber. A plurality of groups of condensation tubes 26 are fixedly installed on the inner wall of the rotating member 20. The outer side of the rotating member 20 is an insulation layer. A driving assembly is fixedly installed on the sealing plate 21, and the driving assembly can drive the rotating member 20 to rotate.

[0047] During operation, the driving assembly of the present invention is composed of a rotating motor and two sets of gears. The two sets of gears are meshed with each other, one set of gears is fixedly connected to the rotating member 20, and the other set of gears is fixedly connected to the output end of the rotating motor. The rotating motor drives the rotating member 20 to rotate. By rotating the rotating member 20, the air above and below the absorption bin 24 maintains the same gas flow rate, avoiding the trouble of setting up multi-layer spraying equipment and reducing the cost of the spraying equipment.

[0048] As a further solution of the present invention, gas detectors are provided in the first detection chamber 15 and the second detection chamber, which can check the sulfur content in the gas. A return pipe 25 is fixedly installed on one side of the second detection chamber, and the lower end of the return pipe 25 is introduced into the lower mixing chamber 14. A desulfurization flue gas pipe 2 is fixedly installed on the upper end of the absorption tank 1, and a control valve 10 is fixedly installed on the desulfurization flue gas pipe 2 and the return pipe 25.

[0049] During operation, after the second detection chamber of the present invention passes the sulfur content test, the desulfurized flue gas is output from the desulfurized flue gas pipe to the demister. If the test fails, the flue gas flows back to the lower mixing chamber 14 through the reflux pipe 25, thereby undergoing desulfurization treatment again to ensure that the desulfurization is qualified.

[0050] As a further solution of the present invention, a helium storage tank 3 is fixedly installed on one side of the absorption tank 1, a side connecting pipe 6 is fixedly installed on one side of the helium storage tank 3, an external connecting pipe 7 is fixedly installed on the side connecting pipe 6, the upper and lower ends of the external connecting pipe 7 are embedded in the side mounting pipe 9, control valves 10 are provided at the upper and lower ends of the external connecting pipe 7, and a negative pressure pump is fixedly installed on the side connecting pipe 6.

[0051] During operation, after the absorption is completed in the absorption bin 24, the present invention inputs helium into the side mounting tube 9 through the external connecting tube 7 and the side connecting tube 6, and the clogged particles accumulated in the opposite side mounting tube 9 are blown away by the helium. After the helium is input into the absorption bin 24 and allowed to stand, the helium has a low density and is in the upper layer, which squeezes the desulfurized flue gas downward, so that the desulfurized flue gas enters from the lower end of the rotating part 20, and is cooled by the condenser tube in the rotating part 20 to remove part of the moisture in the flue gas. The cooled moisture falls along the side wall into the sedimentation pool, thereby further recovering the absorbent, reducing the waste of the absorbent, and reducing costs, and allowing the flue gas to be output from the exhaust pipe 22 at the upper end of the rotating part 20.

[0052] A desulfurization absorption method for thermal power generation, the specific steps of the desulfurization absorption method are as follows:

[0053] Step 1: Add flue gas and external air to flow into the lower mixing chamber 14 through the flue gas inlet pipe 4 and the air inlet pipe 5 respectively for mixing;

[0054] Step 2: The flue gas mixed with air enters the first detection chamber 15 through the inner one-way valve 13. After the sulfur content is detected in the first detection chamber 15, the flue gas enters the absorption chamber 24 through the suction pump 23 and the inner flue gas pipe 16;

[0055] Step 3: The absorbent is input into the absorption chamber 24 through the side installation pipe 9 and the gasification spray part 11;

[0056] Step 4: The rotating member 20 in the absorption chamber 24 rotates to make the flue gas and the absorbent more evenly mixed, and the sulfur dioxide in the flue gas reacts with the calcium carbonate in the absorbent to form calcium sulfate;

[0057] Step 5: After the reaction is sufficient, the helium in the helium storage tank 3 is introduced into the absorption chamber 24 through the external connecting pipe 7 and the side mounting pipe 9, so that the helium squeezes the desulfurized flue gas to sink, and the desulfurized flue gas enters the interior of the rotating part 20 from the lower end of the rotating part 20, and is then discharged from the exhaust pipe 22 into the second detection chamber.

[0058] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A desulfurization absorption system for thermal power generation, comprising an absorption tank (1) and a control valve (10), characterized in that: The absorption tank (1) is provided with an inner transverse partition (12) and an inner vertical partition (17), and the inner vertical partition (17) and the inner transverse partition (12) divide the absorption tank (1) into a lower mixing chamber (14), a first detection chamber (15) and an absorption chamber (24). The absorption tank (1) is provided with: A smoke introduction component, comprising a mixing unit and a smoke introduction unit, wherein the mixing unit is connected to both sides of the lower mixing chamber (14), and the mixing unit is capable of introducing smoke and air into the lower mixing chamber (14) in proportion for mixing, and the smoke introduction unit is arranged between the lower mixing chamber (14) and the first detection chamber (15) and is capable of introducing the mixed smoke and air into the absorption chamber (24); An absorbent introduction component, the absorbent introduction component being arranged on one side of the absorption tank (1) and capable of introducing limestone absorbent into the absorption chamber (24), the flue gas introduction unit and the absorbent introduction component being arranged symmetrically; A mixing adjustment member is provided in the absorption chamber (24), so that the flue gas and the absorbent are mixed more evenly.

2. A desulfurization absorption system for thermal power generation according to claim 1, characterized in that: The inner vertical partition (17) is arranged in the absorption tank (1), and the upper and lower ends of the inner vertical partition (17) are fixedly installed with horizontal connecting plates (18). The upper horizontal connecting plate (18) and the upper end of the absorption tank (1) form a second detection chamber, and the lower horizontal connecting plate (18) and the lower end of the absorption tank (1) form an absorbent sedimentation pool. An inner horizontal partition (12) is fixedly installed between the upper and lower groups of the horizontal connecting plates (18). The lower side of the inner horizontal partition (12) is a lower mixing chamber (14), and the upper side is a first detection chamber (15). An inner one-way valve (13) is fixedly installed on the inner horizontal partition (12), and a sealing plate (21) is fixedly installed on the upper horizontal connecting plate (18). An absorption chamber (24) is formed between the inner vertical partition (17), the inner wall of the absorption tank (1) and the sealing plate (21).

3. A desulfurization absorption system for thermal power generation according to claim 2, characterized in that: The mixing unit includes a smoke inlet pipe (4) and an air inlet pipe (5), the smoke inlet pipe (4) and the air inlet pipe (5) are connected to both sides of the lower mixing bin (14), and a control valve (10) is fixedly installed on the smoke inlet pipe (4) and the air inlet pipe (5), and the control valve (10) adjusts the cross-sectional area of the channel. The smoke inlet unit includes an inner smoke pipe (16), the inner smoke pipe (16) passes through the inner transverse partition (12) from top to bottom, and a suction pump (23) is fixedly installed on the upper end of the inner smoke pipe (16). A plurality of groups of smoke output nozzles (19) are evenly arranged on the inner smoke pipe (16), and one end of the smoke output nozzle (19) passes through the inner vertical partition (17) and extends into the absorption bin (24).

4. A desulfurization absorption system for thermal power generation according to claim 3, characterized in that: The absorbent introduction component comprises a side mounting pipe (9), the side mounting pipe (9) is arranged outside the absorption tank (1), a circulation pump (8) is fixedly mounted on the upper end of the side mounting pipe (9), a gasification device is connected to the lower end of the side mounting pipe (9), a plurality of gasification spray parts (11) are vertically and evenly connected to the side mounting pipe (9), one end of the gasification spray part (11) is introduced into the absorption bin (24), and the gasification spray part (11) and the smoke output nozzle (19) are symmetrically distributed on both sides of the absorption bin (24).

5. A desulfurization absorption system for thermal power generation according to claim 4, characterized in that: The mixing adjustment member includes a rotating member (20), the rotating member (20) is a hollow cylindrical tube and the lower end is set to be open, the upper end of the rotating member (20) is rotatably connected to the sealing plate (21), and a discharge pipe (22) is fixedly installed on the sealing plate (21) at a position corresponding to the position inside the rotating member (20), and the upper end of the discharge pipe (22) extends into the second detection chamber, and multiple groups of condensation tubes (26) are fixedly installed on the inner wall of the rotating member (20), the outer side of the rotating member (20) is a heat insulation layer, and a driving component is fixedly installed on the sealing plate (21), and the driving component can drive the rotating member (20) to rotate.

6. A desulfurization absorption system for thermal power generation according to claim 5, characterized in that: A gas detector is provided in each of the first detection chamber (15) and the second detection chamber, and the gas detector can check the sulfur content in the gas. A return pipe (25) is fixedly installed on one side of the second detection chamber, and the lower end of the return pipe (25) is introduced into the lower mixing chamber (14). A desulfurization flue gas pipe (2) is fixedly installed on the upper end of the absorption tank (1), and a control valve (10) is fixedly installed on the desulfurization flue gas pipe (2) and the return pipe (25).

7. The desulfurization absorption system for thermal power generation according to claim 5, characterized in that: A helium storage tank (3) is fixedly mounted on one side of the absorption tank (1), a side connecting pipe (6) is fixedly mounted on one side of the helium storage tank (3), an external connecting pipe (7) is fixedly mounted on the side connecting pipe (6), the upper and lower ends of the external connecting pipe (7) are embedded in the side mounting pipe (9), control valves (10) are provided at the upper and lower ends of the external connecting pipe (7), and a negative pressure pump is fixedly mounted on the side connecting pipe (6).

8. A desulfurization absorption method for thermal power generation, applicable to a desulfurization absorption system for thermal power generation according to any one of claims 1 to 7, characterized in that: The specific steps of the desulfurization absorption method are as follows: Step 1: Add smoke and external air to flow into the lower mixing chamber (14) through the smoke inlet pipe (4) and the air inlet pipe (5) respectively for mixing; Step 2: The flue gas mixed with air enters the first detection chamber (15) through the inner one-way valve (13). After the sulfur content is detected in the first detection chamber (15), the flue gas enters the absorption chamber (24) through the suction pump (23) and the inner flue gas pipe (16); Step 3: The absorbent is input into the absorption chamber (24) through the side installation pipe (9) and the gasification spraying part (11); Step 4: The rotating member (20) in the absorption chamber (24) rotates to make the flue gas and the absorbent more evenly mixed, and the sulfur dioxide in the flue gas reacts with the calcium carbonate in the absorbent to generate calcium sulfate; Step 5: After the reaction is complete, the helium in the helium storage tank (3) is introduced into the absorption chamber (24) through the external connecting pipe (7) and the side mounting pipe (9), so that the helium squeezes the desulfurized flue gas downward, and the desulfurized flue gas enters the interior of the rotating part (20) from the lower end of the rotating part (20), and is then discharged from the discharge pipe (22) into the second detection chamber.

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