Wet flue gas desulfurization device

Abstract

The utility model relates to a wet flue gas desulfurization device which is characterized in that the upper end of a desulfurization box is fixedly communicated with a liquid inlet pipe, the upper end of the desulfurization box is fixedly communicated with a smoke discharge pipe, the bottom of the desulfurization box is fixedly communicated with a liquid discharge pipe, and a flue gas cooling device is arranged on the left side of the desulfurization box. The outlet end of the smoke cooling device fixedly communicates with the inlet end of a smoke guide pipe, the outlet end of the smoke guide pipe fixedly communicates with the inlet end of a corrugated hose, the outlet end of the corrugated hose fixedly communicates with the inlet end of a dispersion box, and the feeding end of the dispersion box fixedly communicates with a one-way valve. A plurality of dispersing holes are uniformly distributed in the surface of the dispersing box, the reciprocating moving device is fixedly connected with an upper support connected with the upper end of the dispersing box, the two lower supports are jointly and rotationally connected with a longitudinal shaft, a plurality of stirring rods are integrally and uniformly distributed on the longitudinal shaft, and a gear is coaxially and fixedly connected to the front end of the longitudinal shaft; the bottom of the desulfurization box is fixedly connected with a rack which is meshed with the gear and is transversely arranged.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas desulfurization devices, in particular to a wet flue gas desulfurization device. Background Art

[0002] After the sulfur in the coal is burned, a large amount of sulfur dioxide is generated and discharged into the atmosphere. Sulfur dioxide is a toxic gas, and its emission will have a serious impact on the environment, such as acid rain, air pollution, etc. Secondly, long-term exposure to its environment will cause adverse effects on the human body, such as respiratory diseases, cardiovascular diseases, etc. Therefore, it is necessary to desulfurize the flue gas before discharging it to reduce its concentration in the atmosphere, thereby reducing the degree of air pollution and improving environmental quality. Wet desulfurization is a commonly used flue gas desulfurization method. However, the current wet desulfurization mostly uses atomizing nozzles to spray desulfurization on the flue gas, and the desulfurization efficiency is limited. In addition, a large amount of heat in the flue gas cannot be treated and discharged in time, which easily leads to thermal pollution. Therefore, this application specifically proposes a wet flue gas desulfurization device to solve the above problems. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a wet flue gas desulfurization device, and the technical solution to the problem is to include a desulfurization box, characterized in that the upper end of the desulfurization box is fixedly connected to a liquid inlet pipe, the upper end of the desulfurization box is fixedly connected to a smoke exhaust pipe, the bottom of the desulfurization box is fixedly connected to a liquid drain pipe, a liquid drain valve is installed on the smoke exhaust pipe, a flue gas cooling device is arranged on the left side of the desulfurization box, the outlet end of the flue gas cooling device is fixedly connected to the inlet end of the smoke guide pipe, the outlet end of the smoke guide pipe penetrates to the bottom of the desulfurization box and is fixedly connected to the inlet end of the corrugated hose, and the outlet of the corrugated hose The mouth end is fixedly connected to the inlet end of a dispersion box, the feed end of the dispersion box is fixedly connected to a one-way valve, a plurality of dispersion holes are evenly distributed on the surface of the dispersion box, a reciprocating device is arranged on the upper part of the desulfurization box, the reciprocating device is fixedly connected to an upper bracket, the upper bracket is fixedly connected to the upper end of the dispersion box, the lower end of the dispersion box is fixedly connected to two lower brackets which are arranged in a front-to-back correspondence, the two lower brackets are connected to a longitudinal axis for common rotation, a plurality of stirring rods evenly distributed along the length direction of the longitudinal axis are integrally arranged on the longitudinal axis, a gear is coaxially fixedly connected to the front end of the longitudinal axis, and a rack which is meshed with the gear and arranged laterally is fixedly connected to the bottom of the desulfurization box.

[0004] Preferably, the flue gas cooling device includes a left duct arranged outside the desulfurization box, the outlet end of the left duct is fixedly connected to the inlet end of the heat exchanger, the outlet of the heat exchanger is fixedly connected to the inlet end of the right duct, the right duct is fixedly connected to the inlet end of the blower, and the outlet end of the blower is fixedly connected to the inlet end of the smoke guide pipe.

[0005] Preferably, the reciprocating movement device includes a horizontal axis fixedly connected to the left and right side walls of the desulfurization box, the left and right side walls of the desulfurization box are rotatably connected to a reciprocating screw, the reciprocating screw is threadedly connected to a vertical rod that slides with the horizontal axis, the lower end of the vertical rod is fixedly connected to the upper bracket, and the right side wall of the desulfurization box is fixedly connected to a motor for driving the reciprocating screw.

[0006] Preferably, the left and right side walls of the desulfurization box are fixedly connected with a protective cover, the protective cover is used to shield the horizontal axis and the reciprocating screw, and the lower end of the protective cover is provided with a through groove for the vertical rod to move.

[0007] The beneficial effects of the utility model are:

[0008] 1. When the present application is in use, a sufficient amount of treatment liquid can be introduced into the desulfurization box through the liquid inlet pipe to desulfurize the flue gas. The flue gas cooling device provided can first cool the flue gas, so that the flue gas can be introduced into the desulfurization box and react with the treatment liquid therein to complete the desulfurization operation. The desulfurized flue gas is discharged through the exhaust pipe, and the temperature is relatively low, which will not cause thermal pollution. The present application has a simple structure, is easy to use, and has strong practicality.

[0009] 2. When the utility model is in use, the flue gas to be desulfurized enters the conduit through the flue gas cooling device, and then enters the dispersion box through the corrugated hose connected to the smoke guide pipe, and overflows from the dispersion hole and reacts with the treatment liquid. The dispersion box is provided with dispersion holes to facilitate the dispersion of the flue gas. At the same time, the dispersion holes can break up the large bubbles generated when the flue gas is discharged through the corrugated hose, so that the flue gas and the treatment liquid can fully react. Furthermore, the reciprocating device can drive the dispersion box to reciprocate, so that the flue gas is more evenly distributed in the treatment liquid and fully reacts with the treatment liquid, thereby increasing the desulfurization efficiency. Furthermore, when the dispersion box reciprocates with the reciprocating device, the longitudinal axis and the stirring rod will rotate synchronously, and then the stirring rod stirs the treatment liquid, further increasing the desulfurization reaction efficiency of the treatment liquid and the flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a full cutaway front view of the utility model.

[0011] Figure 2 It is an enlarged view of area A in the full-section main view of the utility model.

[0012] Figure 3 This is a three-dimensional cross-sectional view of the utility model from the first viewing angle.

[0013] Figure 4 It is an enlarged view of area B in the first perspective stereoscopic cross-sectional view of the utility model.

[0014] Figure 5It is an enlarged view of the C area in the first perspective stereoscopic cross-sectional view of the utility model.

[0015] Figure 6 This is a partial stereoscopic view from the second viewing angle of the utility model.

[0016] Figure 7 This is a partial three-dimensional cross-sectional view of the utility model from the third viewing angle.

[0017] Figure 8 This is a stereoscopic view from the fourth viewing angle of the present invention.

[0018] Reference numerals

[0019] 1. Desulfurization box, 2. Liquid inlet pipe, 3. Smoke exhaust pipe, 4. Drain pipe, 5. Drain valve, 6. Smoke guide pipe, 7. Corrugated hose, 8. Dispersion box, 9. Check valve, 10. Dispersion hole, 11. Upper bracket, 12. Lower bracket, 13. Longitudinal axis, 14. Stirring rod, 15. Gear, 16. Rack, 17. Left duct, 18. Heat exchanger, 19. Right duct, 20. Blower, 21. Horizontal axis, 22. Reciprocating screw, 23. Vertical rod, 24. Motor, 25. Protective cover, 26. Through slot. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1-8 The specific implementation methods of the utility model are further described in detail.

[0021] Embodiment 1, the technical solution is that when the present application is used, a sufficient amount of treatment liquid can be introduced into the desulfurization box 1 through the liquid inlet pipe 2 to desulfurize the flue gas, the treatment liquid can be a sodium carbonate solution or other currently commonly used desulfurization solution, and the flue gas cooling device can first cool the flue gas, so that the flue gas is introduced into the desulfurization box 1 and reacts with the treatment liquid therein to complete the desulfurization operation, and the desulfurized flue gas is discharged through the exhaust pipe 3, the temperature is relatively low, and no thermal pollution is caused. The present application is simple in structure, easy to use, and highly practical.

[0022] When the utility model is in use, the flue gas to be desulfurized enters the conduit through the flue gas cooling device, and then enters the dispersion box 8 through the corrugated hose 7 connected to the smoke guide pipe 6, and overflows from the dispersion hole 10 and reacts with the treatment liquid. The dispersion box 8 is arranged with dispersion holes to facilitate the dispersion of the flue gas. At the same time, the dispersion holes 10 provided can break the large bubbles generated when the flue gas is discharged through the corrugated hose 7, so that the flue gas and the treatment liquid can fully react. Further, the reciprocating device provided can drive the dispersion box to reciprocate, so that it is more convenient for the flue gas to be evenly distributed in the treatment liquid and fully react with the treatment liquid, thereby increasing the desulfurization efficiency. Furthermore, when the dispersion box 8 reciprocates with the reciprocating device, the longitudinal axis 13 and the stirring rod 14 will rotate synchronously, and then the stirring rod 14 stirs the treatment liquid, further increasing the desulfurization reaction efficiency of the treatment liquid and the flue gas.

[0023] Embodiment 2. On the basis of embodiment 1, specifically, when the present application is in use, in order to avoid thermal pollution caused by excessively high temperature of the flue gas discharged through the smoke exhaust pipe 3 after desulfurization, and at the same time to make the temperature of the flue gas to be desulfurized suitable for reacting with the treatment liquid in the desulfurization box 1, a flue gas cooling device is arranged on the left side of the desulfurization box 1, and the flue gas to be desulfurized is sent to the heat exchanger 18 through the left duct 17 for heat exchange and cooling. After the desulfurized flue gas is cooled, it is sent out through the right duct 19, and under the action of the blower 20, it is successively sent to the smoke guide pipe 6, the corrugated hose 7, and the dispersion box 8, and is discharged from the dispersion hole 10 to react with the treatment liquid. A one-way valve 9 is installed at the inlet end of the dispersion box 8. The one-way valve 9 only allows the gas to be desulfurized to flow from the outlet end of the corrugated hose 7 to the dispersion box 8, and does not allow the treatment liquid to flow back from the dispersion box 8 into the corrugated hose 7. Furthermore, in order to ensure that the smoke in the corrugated hose 7 can enter the dispersion box 8 through the one-way valve 9 and be discharged from the dispersion hole 10, the wind pressure of the blower 20 should be ensured to ensure that the flow pressure of the smoke is sufficient to pass through the one-way valve 9.

[0024] After the flue gas to be desulfurized is discharged through the dispersion hole 10, it contacts with the treatment liquid for desulfurization reaction. In order to increase the reaction efficiency, the motor 24 of the reciprocating motion device should be started. The motor 24 drives the reciprocating screw 22 to rotate. The rotation of the reciprocating screw 22 drives the vertical rod 23 to slide back and forth along the horizontal axis 21, and then the dispersion box 8 connected to the vertical rod 23 through the upper bracket 11 will also move back and forth laterally synchronously with the vertical rod 23, that is, the dispersion box 8 moves back and forth laterally in the treatment liquid, which is beneficial to the uniform distribution of the flue gas in the treatment liquid and increases the desulfurization reaction efficiency of the treatment liquid and the flue gas. Furthermore, when the dispersion box 8 moves back and forth laterally with the vertical rod 23, the lower bracket 12 and the related components such as the longitudinal axis 13 and the gear 15 also move back and forth laterally. The reciprocating movement of the gear 15 will interact with the rack 16, thereby causing the gear 15 to rotate, and then the longitudinal axis 13 and the stirring rod 14 also rotate, so that the stirring rod 14 can stir the treatment liquid, which is convenient for the flue gas and the treatment liquid to fully react and increase the reaction rate. The flue gas after desulfurization is discharged from the exhaust pipe 3. The treatment liquid after the desulfurization operation can be discharged from the exhaust pipe 3 by opening the drain valve 5. The protective cover 25 is used to shield the horizontal axis 21 and the reciprocating screw 22. The lower end of the protective cover 25 is provided with a through groove 26 for the movement of the vertical rod 23. Furthermore, the components involved in this application should adopt corrosion-resistant profiles as required.

Claims

1. A wet flue gas desulfurization device, comprising a desulfurization box (1), characterized in that: The upper end of the desulfurization box (1) is fixedly connected to a liquid inlet pipe (2), the upper end of the desulfurization box (1) is fixedly connected to a smoke exhaust pipe (3), the bottom of the desulfurization box (1) is fixedly connected to a liquid drain pipe (4), the smoke exhaust pipe (3) is installed with a liquid drain valve (5), a flue gas cooling device is arranged on the left side of the desulfurization box (1), the outlet end of the flue gas cooling device is fixedly connected to the inlet end of a smoke guide pipe (6), the outlet end of the smoke guide pipe (6) passes through the bottom of the desulfurization box (1) and is fixedly connected to the inlet end of a corrugated hose (7), the outlet end of the corrugated hose (7) is fixedly connected to the inlet end of a dispersion box (8), the feed end of the dispersion box (8) is fixedly connected to a one-way valve (9), the dispersion box (8) A plurality of dispersion holes (10) are evenly distributed on the surface of the desulfurization box (1), a reciprocating device is arranged on the upper part of the desulfurization box (1), the reciprocating device is fixedly connected to an upper bracket (11), the upper bracket (11) is fixedly connected to the upper end of the dispersion box (8), the lower end of the dispersion box (8) is fixedly connected to two lower brackets (12) arranged in a front-to-back manner, the two lower brackets (12) are rotatably connected to a longitudinal axis (13), a plurality of stirring rods (14) are evenly distributed along the length direction of the longitudinal axis (13), a gear (15) is coaxially fixedly connected to the front end of the longitudinal axis (13), and a rack (16) meshing with the gear (15) and arranged transversely is fixedly connected to the bottom of the desulfurization box (1).

2. A wet flue gas desulfurization device according to claim 1, characterized in that: The flue gas cooling device comprises a left duct (17) arranged outside the desulfurization box (1), the outlet end of the left duct (17) is fixedly connected to the inlet end of a heat exchanger (18), the outlet of the heat exchanger (18) is fixedly connected to the inlet end of a right duct (19), the right duct (19) is fixedly connected to the inlet end of a blower (20), and the outlet end of the blower (20) is fixedly connected to the inlet end of a smoke guide pipe (6).

3. A wet flue gas desulfurization device according to claim 1, characterized in that: The reciprocating device comprises a horizontal axis (21) fixedly connected to the left and right side walls of the desulfurization box (1); the left and right side walls of the desulfurization box (1) are rotatably connected to a reciprocating screw (22); the reciprocating screw (22) is threadedly connected to a vertical rod (23) that is slidably matched with the horizontal axis (21); the lower end of the vertical rod (23) is fixedly connected to the upper bracket (11); and the right side wall of the desulfurization box (1) is fixedly connected to a motor (24) for driving the reciprocating screw (22).

4. A wet flue gas desulfurization device according to claim 3, characterized in that: The left and right side walls of the desulfurization box (1) are fixedly connected with a protective cover (25), the protective cover (25) is used to shield the horizontal axis (21) and the reciprocating screw (22), and a through groove (26) for the vertical rod (23) to move is formed at the lower end of the protective cover (25).

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