Boiler flue gas desulfurization tower

Abstract

The utility model discloses a boiler flue gas desulfurization tower, which belongs to the technical field of boiler heating equipment, and comprises a lower tower body and an upper tower body, the lower tower body is inserted into the bottom of the upper tower body and is fixed through a plurality of bolts, a spraying assembly is arranged in the upper tower body, the spraying assembly atomizes and sprays alkali liquor downwards, and the upper tower body is fixed through a plurality of bolts. The lower tower body is internally provided with a washing assembly, the washing assembly is soaked in alkali liquor for air outlet, a wiping assembly connected with the lower tower body is arranged below the washing assembly, the wiping assembly comprises a vertical shaft rotationally connected with the inner wall of the bottom of the lower tower body, the top end of the vertical shaft is fixedly connected with a brush plate, and the brush plate is fixedly connected with the bottom of the lower tower body. The vertical shaft is fixedly sleeved with a driven bevel gear. According to the utility model, the flue gas is convenient to contact with alkali liquor firstly, and the flue gas outlet is wiped and cleaned, so that the flue gas outlet is effectively prevented from being scaled and blocked, the normal gas outlet is ensured, and the flue gas after primary absorption is atomized and absorbed by spraying, so that the flue gas is ensured to be thoroughly absorbed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of boiler heating equipment, especially relates to a boiler flue gas desulfurization tower. BACKGROUND

[0002] In the process of boiler flue gas desulfurization, the traditional flue gas desulfurization tower has the following characteristics: in order to facilitate the absorption of sulfur-containing gas in the boiler flue gas, the flue gas emission reaches the standard; since the traditional desulfurization tower is used to send the supernatant (alkaline) after neutralization into the desulfurization tower for flue gas desulfurization, the desulfurization efficiency is low due to the lower alkalinity of the supernatant than sodium hydroxide. Not only the utilization rate of lime milk is low, but also the desulfurization efficiency is low.

[0003] The traditional desulfurization process is spray desulfurization, that is, the alkali solution is sent into the desulfurization tower, and then the spray device is used to spray droplets, which react with the upward moving flue gas in the falling process of the droplets, absorb the sulfur-containing gas in the flue gas, and then fall to the bottom of the desulfurization tower for recycling and entering the neutralization tank for recycling. In actual production, this desulfurization method has low effect. First, the spray device is easily blocked by dust in the flue gas, which affects the spraying effect and further affects the desulfurization efficiency of the flue gas. Moreover, the solubility of calcium sulfite after reaction is very low, which is easy to form scale in the nozzle of the spray device, block the nozzle and affect the spraying effect, and further affect the desulfurization efficiency of the flue gas. Therefore, how to solve the blockage of the spray device and improve the desulfurization efficiency of the desulfurization tower has become one of the problems to be solved at present, and for this purpose, a boiler flue gas desulfurization tower is proposed. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the above problems, the purpose of the utility model is to provide a boiler flue gas desulfurization tower.

[0005] In order to achieve the above purpose, the utility model provides a boiler flue gas desulfurization tower, which comprises a lower tower body and an upper tower body, the lower tower body is inserted into the bottom of the upper tower body and is fixed by a plurality of bolts, the inside of the upper tower body is provided with a spray assembly, the spray assembly atomizes and sprays the alkali solution downward, the inside of the lower tower body is provided with a washing assembly, the washing assembly is soaked in the alkali solution for gas outlet, the lower part of the washing assembly is provided with a wiping assembly connected with the lower tower body, the wiping assembly comprises a vertical shaft rotatably connected with the inner wall of the bottom of the lower tower body, the top end of the vertical shaft is fixedly connected with a brush plate, a driven bevel gear is fixedly sleeved on the outside of the vertical shaft, a driving motor is fixedly connected on one side of the lower tower body, the output shaft of the driving motor is fixedly connected with a horizontal shaft, the end of the horizontal shaft away from the driving motor is fixedly connected with a driving bevel gear, and the driving bevel gear is in meshing transmission with the driven bevel gear, and a anti-suck-back assembly is connected on one side of the outside of the lower tower body, the anti-suck-back assembly is used for preventing the alkali solution from being sucked back.

[0006] Preferably, the spraying assembly comprises a spraying pipe, a liquid inlet pipe is fixedly connected to the top of the spraying pipe and penetrates the upper tower body.

[0007] Preferably, the washing assembly comprises a washing smoke pipe, an air inlet pipe is fixedly connected to the top of the washing smoke pipe and penetrates the lower tower body.

[0008] Preferably, the anti-backflow assembly comprises an anti-backflow box, an air inlet pipe is fixedly connected to the top right side of the anti-backflow box, an air outlet pipe is fixedly connected to the top left side of the anti-backflow box, a one-way valve is arranged on the air outlet pipe, and the top end of the air outlet pipe is fixedly connected to the air inlet pipe.

[0009] Preferably, the top of the upper tower body is provided with an air outlet.

[0010] Preferably, one side of the lower tower body is provided with a liquid outlet pipe.

[0011] The boiler flue gas desulfurization tower can bring the following beneficial effects:

[0012] 1. The spraying assembly sprays downward, so that the alkali solution and the flue gas can be fully contacted and absorbed, and the washing assembly is soaked in the alkali solution to discharge air, so that the smoke outlet is prevented from being blocked by scaling;

[0013] 2. The wiping assembly wipes the smoke outlet at the bottom of the washing assembly, so that the smoke outlet is further cleaned to prevent blockage;

[0014] 3. The anti-backflow assembly can prevent the alkali solution in the lower tower body from flowing backward, effectively ensuring the safety of air inlet;

[0015] In summary, the present scheme has the advantages of simple structure and novel design, which not only facilitates the contact between the flue gas and the alkali solution, but also wipes and cleans the smoke outlet, effectively preventing the smoke outlet from being blocked by scaling and ensuring normal air discharge, and the flue gas after preliminary absorption is further absorbed by spraying and atomization, ensuring complete flue gas absorption. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which are included to provide a further understanding of the present application and constitute a part of this application, illustrate certain illustrative embodiments of the present application and together with the general description of the present application and the detailed description of the illustrative embodiments, serve to explain the principles of the present application.

[0017] In the drawings:

[0018] Figure 1 Partially cutaway structural schematic views of the present application.

[0019] Figure 2 are Figure 1 side structural schematic views.

[0020] Figure 3 is a perspective view of the spraying assembly. Figure 1

[0021] Figure 4 is a perspective view of the wiping assembly.

[0022] Figure 5 is a perspective view of the wiping assembly.

[0023] In the figure: 1 lower tower body, 2 upper tower body, 3 spraying pipe, 4 liquid inlet pipe, 5 washing smoke pipe, 6 air inlet smoke pipe, 7 wiping assembly, 701 vertical shaft, 702 brush plate, 703 driven bevel gear, 704 driving motor, 705 horizontal shaft, 706 driving bevel gear, 8 anti-suck box, 9 air inlet pipe, 10 air outlet pipe, 11 one-way valve, 12 liquid outlet pipe. DETAILED DESCRIPTION

[0024] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail with reference to the accompanying drawings.

[0025] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0026] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0027] As Figures 1-5 ​As shown, the utility model discloses an embodiment proposes a boiler flue gas desulfurization tower, including lower tower body 1 and upper tower body 2, lower tower body 1 inserts the bottom of upper tower body 2 and is fixed through a plurality of bolts, the inside of upper tower body 2 is equipped with spray assembly, this spray assembly is atomized and sprays downward to alkali liquor, the inside of lower tower body 1 is equipped with washing assembly, this washing assembly is soaked in alkali liquor and carries out the air outlet, the lower washing assembly is equipped with the wiping assembly 7 connected with lower tower body 1, wiping assembly 7 includes the vertical shaft 701 rotationally connected with the bottom inner wall of lower tower body 1, the top of vertical shaft 701 is fixedly connected with brush plate 702, the outside of vertical shaft 701 is fixedly covered with driven bevel gear 703, one side of lower tower body 1 is fixedly connected with driving motor 704, the output shaft of driving motor 704 is fixedly connected with horizontal shaft 705, the end away from driving motor 704 of horizontal shaft 705 is fixedly connected with driving bevel gear 706, and driving bevel gear 706 is engaged transmission with driven bevel gear 703, and the washing assembly is connected with the anti-suckback assembly of one side at the outside of lower tower body 1, the anti-suckback assembly is used for preventing alkali liquor suckback.

[0028] As Figure 4 The spray assembly includes a spray pipe 3, the top of the spray pipe 3 is fixedly connected with a liquid inlet pipe 4 in communication therewith, and the liquid inlet pipe 4 penetrates the upper tower body 2. The alkali liquor is sent into the spray pipe 3 through the liquid inlet pipe 4, so that the spray pipe 3 atomizes and sprays downward.

[0029] As Figure 3 The washing assembly includes a washing smoke pipe 5, the top of the washing smoke pipe 5 is fixedly connected with an air inlet smoke pipe 6 in communication therewith, and the air inlet smoke pipe 6 penetrates the lower tower body 1. The flue gas enters the washing smoke pipe 5 through the air inlet smoke pipe 6, and the washing smoke pipe 5 is soaked in the alkali liquor. Finally, the flue gas is blown downward into the alkali liquor.

[0030] As Figure 1 The anti-suckback assembly includes an anti-suckback box 8, the top right side of the anti-suckback box 8 is fixedly connected with an air inlet pipe 9 in communication therewith, the top left side of the anti-suckback box 8 is fixedly connected with an air outlet pipe 10 in communication therewith, the air outlet pipe 10 is provided with a check valve 11, the top end of the air outlet pipe 10 is fixedly connected with the air inlet smoke pipe 6, the flue gas enters the anti-suckback box 8 through the air inlet pipe 9, then enters the air outlet pipe 10 through the check valve 11, and finally enters the air inlet smoke pipe 6.

[0031] As Figure 1 The top of the upper tower body 2 is provided with an air outlet.

[0032] As Figure 1 One side of the lower tower body 1 is provided with a liquid outlet pipe 12. The overflowed alkali liquor flows out through the liquid outlet pipe 12.

[0033] Working principle: flue gas enters into the anti-suck box 8 through the air inlet pipe 9, then enters into the air outlet pipe 10 through the one-way valve 11, and finally enters into the air inlet smoke pipe 6, so as to prevent the flue gas from flowing back into the anti-suck box 8; the flue gas enters into the washing smoke pipe 5 through the air inlet smoke pipe 6, the washing smoke pipe 5 is soaked in the lye, and finally the flue gas is blown into the lye downwards; the lye is sent into the spray pipe 3 through the liquid inlet pipe 4, so that the spray pipe 3 atomizes and sprays downwards, so that the flue gas is fully absorbed; the driving motor 704 drives the horizontal shaft 705 to rotate, the horizontal shaft 705 drives the driving bevel gear 706 to rotate, the driving bevel gear 706 drives the driven bevel gear 703 to rotate, and the driven bevel gear 703 drives the vertical shaft 701 to rotate, so that the vertical shaft 701 drives the brush plate 702 to rotate to wipe the smoke outlet of the washing smoke pipe 5, so that the smoke outlet is further cleaned, and blockage is prevented.

[0034] Each embodiment in the specification is described in a progressive manner, and the same and similar parts between each embodiment can be referred to each other, and each embodiment mainly describes the difference from other embodiments. Especially, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the related parts can be referred to the part of the method embodiment.

[0035] The above only describes the embodiments of the present application and does not limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A boiler flue gas desulfurization tower comprising a lower tower body (1) and an upper tower body (2), the lower tower body (1) being inserted into the bottom of the upper tower body (2) and being fixed by a plurality of bolts, characterized in that, The inside of the upper tower body (2) is provided with a spraying assembly which atomizes and sprays the lye downward, the inside of the lower tower body (1) is provided with a washing assembly which is immersed in the lye to exhaust gas, the lower part of the washing assembly is provided with a wiping assembly (7) connected with the lower tower body (1), the wiping assembly (7) comprises a vertical shaft (701) rotationally connected with the inner wall of the bottom of the lower tower body (1), the top end of the vertical shaft (701) is fixedly connected with a brush plate (702), the outside of the vertical shaft (701) is fixedly sleeved with a driven bevel gear (703), one side of the lower tower body (1) is fixedly connected with a driving motor (704), the output shaft of the driving motor (704) is fixedly connected with a horizontal shaft (705), the end of the horizontal shaft (705) away from the driving motor (704) is fixedly connected with a driving bevel gear (706), and the driving bevel gear (706) is in meshing transmission with the driven bevel gear (703), the washing assembly is connected with an anti-suck-back assembly located on one side outside the lower tower body (1), which is used for preventing the lye from being sucked back.

2. A boiler flue gas desulphurization tower according to claim 1, characterized in that, The spraying assembly comprises a spraying pipe (3), the top of the spraying pipe (3) is fixedly connected with a liquid inlet pipe (4) in communication therewith, and the liquid inlet pipe (4) penetrates the upper tower body (2).

3. A boiler flue gas desulphurization tower as claimed in claim 1, wherein, The washing assembly comprises a washing smoke pipe (5), the top of the washing smoke pipe (5) is fixedly connected with an air inlet smoke pipe (6) in communication therewith, and the air inlet smoke pipe (6) penetrates the lower tower body (1).

4. A boiler flue gas desulphurization tower according to claim 3, characterized in that, The anti-suck-back assembly comprises an anti-suck-back box (8), the top right side of the anti-suck-back box (8) is fixedly connected with an air inlet pipe (9) in communication therewith, the top left side of the anti-suck-back box (8) is fixedly connected with an air outlet pipe (10) in communication therewith, the air outlet pipe (10) is provided with a one-way valve (11), and the top end of the air outlet pipe (10) is fixedly connected with the air inlet smoke pipe (6).

5. A boiler flue gas desulphurization tower as claimed in claim 1, wherein, The top of the upper tower body (2) is provided with an air outlet.

6. A boiler flue gas desulphurization tower according to claim 1, characterized in that, One side of the lower tower body (1) is provided with a liquid outlet pipe (12).

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