Spraying device for wet desulphurization flue

Abstract

The utility model discloses a wet desulphurization flue spraying device, which belongs to the technical field of flue gas desulfurization and comprises an absorption tower, a heat exchange box is arranged on the side portion of the absorption tower, a sucking pump is fixedly mounted on the side face of the heat exchange box, and a filtering mechanism is arranged at the input end of the sucking pump. The output end of the air extracting pump extends into an inner cavity of the heat exchange box and is fixedly connected with a heat exchange curved pipe. According to the flue gas treatment device disclosed by the utility model, flue gas to be treated is guided into the inner cavity of the gas spraying ring pipe through the matching of the first gas guide pipe, the filter box, the heat exchange curved pipe and the second gas guide pipe, and the flue gas is upwards dispersed and sprayed out by utilizing the plurality of gas spraying holes in the top of the gas spraying ring pipe; and meanwhile, atomization holes in a plurality of liquid spraying ring pipes are downwards atomized and sprayed out of desulfurization slurry by utilizing a liquid pump, so that the atomized desulfurization slurry is in contact with the dispersed flue gas, and sulfides in the flue gas are effectively removed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of flue gas desulfurization, more particularly to a wet desulfurization flue spraying device. BACKGROUND

[0002] Wet desulfurization is widely used in coal-fired industries. In the desulfurization absorption tower, SO2 in flue gas is washed by absorption slurry and reacts with CaCO3 in the slurry. The generated calcium sulfite is forcibly oxidized by the oxidation air from the fan in the circulating slurry pool at the bottom of the absorption tower, and finally gypsum is generated. The gypsum in the absorption tower is pumped out by the gypsum slurry discharge pump and sent to the gypsum dewatering system for dewatering. This reaction process can effectively control SO2.

[0003] After searching, the utility model patent with publication number CN221705545U discloses a wet desulfurization flue spraying device, which comprises an absorption tower, a smoke dust concentrating assembly, a smoke dust conveying assembly, and a spraying assembly. The absorption tower is used for waste gas treatment. The smoke dust concentrating assembly is used for concentrating smoke dust. A flue gas pipeline is connected between the absorption tower and the smoke dust concentrating assembly. The smoke dust conveying assembly is arranged on the flue gas pipeline between the absorption tower and the smoke dust concentrating assembly, and is used for conveying smoke dust in the smoke dust concentrating assembly to the absorption tower. The spraying assembly is used for spraying liquid into the flue gas pipeline to cool the flue gas before it enters the absorption tower. Under the action of the spraying assembly, the booster pump pumps the liquid in the water tank to the water conveying ring, and then sprays it through the spraying head to cool the flue gas before it enters the absorption tower. The cooling effect produced during the spraying process can reduce the temperature of the flue gas, protect the equipment, and reduce the heat of the flue gas emission, thereby controlling the evaporation amount in the absorption tower.

[0004] However, the above-mentioned patent still has the following disadvantages: it is not convenient to disperse the smoke to the absorption tower, which affects the desulfurization effect and efficiency of the spraying liquid on the smoke. In addition, although the temperature of the flue gas can be effectively reduced when relying on the spraying liquid to cool the flue gas, the heat in the flue gas will be lost, which easily causes waste of heat. Therefore, we propose a wet desulfurization flue spraying device. UTILITY MODEL CONTENTS

[0005] In view of the problems in the prior art, the utility model aims to provide a wet desulfurization flue spraying device.

[0006] To solve the above problems, the utility model adopts the following technical scheme:

[0007] The utility model relates to a wet desulfurization flue spraying device, including the absorption tower, the side of absorption tower is provided with heat exchange box, the side of heat exchange box is fixedly installed with the air pump of drawing, the input of air pump of drawing is provided with filter mechanism, the output of air pump of drawing extends to the inner chamber of heat exchange box and is fixedly connected with the heat exchange curved pipe, the end of heat exchange curved pipe extends to the outside of heat exchange box and is fixedly connected with second gas duct, the end of second gas duct is fixedly sleeved to the inner chamber of absorption tower and is fixedly connected with the gas ring pipe, the top of gas ring pipe is provided with a plurality of gas injection holes, the back of absorption tower is provided with spray mechanism, the top of heat exchange box is provided with water inlet mechanism, the back of heat exchange box is fixedly installed with two servo motors, the output shaft of two servo motors extends to the inner chamber of heat exchange box and is fixedly connected with the agitating fan blade, the inner wall of heat exchange box is fixedly installed with temperature sensor, the front of heat exchange box is fixedly installed with control panel.

[0008] As a preferred scheme of the utility model, the water inlet mechanism includes a water pump fixedly installed on the top surface of the heat exchange box, the input of the water pump is fixedly connected with a water guide pipe, and the output of the water pump extends into the inner chamber of the heat exchange box.

[0009] As a preferred scheme of the utility model, the filter mechanism includes a filter box fixedly sleeved on the input of the air pump of drawing, a sealing door is hingedly connected to the front of the filter box, a first gas guide pipe is fixedly sleeved on the end surface of the filter box, and filter cotton is fixedly sleeved in the inner chamber of the filter box.

[0010] As a preferred scheme of the utility model, the spray mechanism includes a liquid pumping machine fixedly installed on the back of the absorption tower and a plurality of demisting plates fixedly sleeved in the inner chamber of the absorption tower, the input of the liquid pumping machine extends to the bottom of the inner chamber of the absorption tower, the output of the liquid pumping machine is fixedly connected with a liquid guide main pipe, a plurality of liquid guide branch pipes are fixedly connected to the side of the liquid guide main pipe, the ends of the plurality of liquid guide branch pipes extend into the inner chamber of the absorption tower and are fixedly connected with liquid ring pipes, and a plurality of atomizing holes are formed in the bottom surface of the liquid ring pipes.

[0011] As a preferred scheme of the utility model, a third gas guide pipe is fixedly sleeved on the side of the top end of the absorption tower, and a chimney is fixedly connected to the end of the third gas guide pipe.

[0012] As a preferred scheme of the utility model, a glass window is fixedly sleeved on the front of the heat exchange box, and a drain valve is fixedly installed on the side of the bottom end of the heat exchange box.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] (1) The utility model discloses a first air duct, filter box, heat exchange curved pipe, second air duct's cooperation is handled the flue gas to be guided to the inner chamber of the air ring pipe, and utilize the multiple air injection holes of air ring pipe top to make the flue gas upward dispersion and spray, utilize the liquid pump to make the atomization hole on multiple liquid injection ring pipe downward atomization and spray desulfurization slurry, make atomized desulfurization slurry and dispersed flue gas contact, to the sulfide in flue gas is effectively removed.

[0015] (2) The utility model discloses when the flue gas is flowing in the heat exchange curved pipe, utilize the water in heat exchange box and the flue gas in heat exchange curved pipe to carry out heat exchange, on one hand, the flue gas in heat exchange curved pipe is cooled down, avoids the flue gas to enter into the absorption tower and causes desulfurization slurry evaporation, on the other hand, utilize the water in heat exchange box to absorb the heat in flue gas, avoids causing the waste of heat in flue gas. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is whole structure schematic diagram of the utility model;

[0017] Figure 2 It is whole cross section schematic diagram of the utility model;

[0018] Figure 3 It is structure schematic diagram of the utility model absorption tower;

[0019] Figure 4 It is structure schematic diagram of the utility model heat exchange curved pipe;

[0020] Figure 5 It is cross section schematic diagram of the utility model heat exchange box;

[0021] Figure 6 It is cross section schematic diagram of the utility model filter box.

[0022] Mark explanation in drawing:

[0023] 1, absorption tower;2, heat exchange box;3, second air duct;4, heat exchange curved pipe;5, air pump;6, filter mechanism;7, air ring pipe;8, air injection hole;9, spray mechanism;10, water inlet mechanism;11, glass window;12, filter box;13, filter cotton;14, sealing door;15, first air duct;16, water pump;17, water guide pipe;18, drain valve;19, temperature sensor;20, servo motor;21, agitating fan blade;22, demisting plate;23, liquid pump;24, liquid guide main pipe;25, liquid guide branch pipe;26, liquid injection ring pipe;27, atomization hole;28, third air duct;29, chimney;30, control panel. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0025] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate 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 do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be broadly understood, for example, "connected" can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] Embodiment:

[0028] Please refer to Figures 1-6 A wet desulfurization flue gas spraying device, comprising an absorption tower 1, a heat exchange box 2 is arranged on the side of the absorption tower 1, a gas suction pump 5 is fixedly installed on the side of the heat exchange box 2, a filtering mechanism 6 is arranged on the input end of the gas suction pump 5, the output end of the gas suction pump 5 extends to the inner cavity of the heat exchange box 2 and is fixedly connected with a heat exchange curved pipe 4, the end of the heat exchange curved pipe 4 extends to the outside of the heat exchange box 2 and is fixedly connected with a second air guide pipe 3, the end of the second air guide pipe 3 is fixedly sleeved into the inner cavity of the absorption tower 1 and is fixedly connected with a gas injection ring pipe 7, a plurality of gas injection holes 8 are arranged on the top surface of the gas injection ring pipe 7, a spraying mechanism 9 is arranged on the back of the absorption tower 1, a water inlet mechanism 10 is arranged on the top of the heat exchange box 2, two servo motors 20 are fixedly installed on the back of the heat exchange box 2, the output shafts of the two servo motors 20 extend to the inner cavity of the heat exchange box 2 and are fixedly connected with stirring fan blades 21, a temperature sensor 19 is fixedly installed on the inner wall of the heat exchange box 2, and a control panel 30 is fixedly installed on the front of the heat exchange box 2.

[0029] In this embodiment, the temperature sensor 19 is used to detect the water temperature in the heat exchange box 2. The heat exchange between the heat of the flue gas in the heat exchange curved pipe 4 and the cooling water in the heat exchange box 2 can cool the flue gas and recycle the heat of the flue gas, thereby avoiding waste of heat.

[0030] Specifically, please refer to Figure 1 and Figure 2 The water inlet mechanism 10 includes a water pump 16 fixedly installed on the top surface of the heat exchange box 2. The input end of the water pump 16 is fixedly connected with a water guide pipe 17. The output end of the water pump 16 extends to the inner cavity of the heat exchange box 2.

[0031] In this embodiment, the end of the water guide pipe 17 is connected with an external water source. The water pump 16 and the water guide pipe 17 are used to add water to the inner cavity of the heat exchange box 2.

[0032] Specifically, please refer to Figure 1 and Figure 6 The filtering mechanism 6 includes a filtering box 12 fixedly sleeved on the input end of the air suction pump 5. The front surface of the filtering box 12 is hingedly connected with a sealing door 14. The end surface of the filtering box 12 is fixedly sleeved with a first air guide pipe 15. The inner cavity of the filtering box 12 is fixedly sleeved with filter cotton 13.

[0033] In this embodiment, the filter cotton 13 is used to filter the dust in the flue gas. The end of the first air guide pipe 15 is connected with the exhaust port of the flue gas generating device.

[0034] Specifically, please refer to Figure 2 and Figure 3 The spraying mechanism 9 includes a liquid suction pump 23 fixedly installed on the back of the absorption tower 1 and a plurality of demisting plates 22 fixedly sleeved in the inner cavity of the absorption tower 1. The input end of the liquid suction pump 23 extends to the bottom of the inner cavity of the absorption tower 1. The output end of the liquid suction pump 23 is fixedly connected with a liquid guide main pipe 24. The side surface of the liquid guide main pipe 24 is fixedly connected with a plurality of liquid guide branch pipes 25. The ends of the plurality of liquid guide branch pipes 25 extend to the inner cavity of the absorption tower 1 and are fixedly connected with a liquid spraying ring pipe 26. The bottom surface of the liquid spraying ring pipe 26 is provided with a plurality of atomizing holes 27.

[0035] In this embodiment, the liquid suction pump 23, the liquid guide main pipe 24, the liquid guide branch pipes 25, the liquid spraying ring pipe 26 and the atomizing holes 27 are used to spray the desulfurization slurry at the bottom of the absorption tower 1 downward, so as to remove the sulfides in the flue gas by using the desulfurization slurry.

[0036] Specifically, please refer to Figure 1 The side of the top end of the absorption tower 1 is fixedly sleeved with a third air guide pipe 28. The end of the third air guide pipe 28 is fixedly connected with a chimney 29.

[0037] In this embodiment, the chimney 29 is used to discharge the treated flue gas in the absorption tower 1.

[0038] Specifically, please refer to Figure 1 The front of the heat exchange box 2 is fixedly sleeved with a glass window 11, and the side of the bottom end of the heat exchange box 2 is fixedly installed with a drain valve 18.

[0039] In this embodiment, the amount of water in the heat exchange box 2 is controlled through the glass window 11, and the water in the heat exchange box 2 is discharged through the drain valve 18.

[0040] Working principle: when in use, first, start the air suction pump 5 to suck air from the inner cavity of the filter box 12, use the negative pressure suction force of the inner cavity of the filter box 12 to make the first air guide pipe 15 guide the flue gas generated by the equipment into the inner cavity of the filter box 12, use the filter cotton 13 in the inner cavity of the filter box 12 to filter the smoke dust in the flue gas, then make the filtered flue gas pass through the output end of the air suction pump 5 and be guided into the heat exchange curved pipe 4, and the flue gas flowing in the heat exchange curved pipe 4 and the water in the heat exchange box 2 are used for heat exchange, so as to cool the flue gas in the heat exchange curved pipe 4, avoid a large amount of evaporation gas generated by spraying in the absorption tower 1, additionally, use the water in the heat exchange box 2 to absorb the heat of the flue gas, avoid waste of the heat contained in the flue gas, at the same time, start the servo motor 20 to drive the stirring fan blade 21 to rotate, speed up the efficiency of the contact between the water and the outside of the heat exchange curved pipe 4, at the same time, use the temperature sensor 19 to detect the water temperature in the heat exchange box 2, when the water temperature in the heat exchange box 2 reaches a predetermined temperature, the heated water is discharged from the drain valve 18 for use, additionally, the external water is added to the heat exchange box 2 through the water pump 16 and the water guide pipe 17, then the flue gas cooled by heat exchange through the heat exchange curved pipe 4 is guided into the air injection ring pipe 7 from the second air guide pipe 3, and the flue gas in the air injection ring pipe 7 is dispersed and sprayed upwards from the multiple air injection holes 8, at the same time, the atomizing holes 27 on the multiple liquid injection ring pipes 26 spray the desulfurization slurry downwards through the liquid suction pump 23, so that the desulfurization slurry and the sulfides in the flue gas react, thereby realizing desulfurization treatment, finally, the flue gas after desulfurization enters the chimney 29 from the third air guide pipe 28, so that the flue gas is discharged from the chimney 29.

[0041] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and improvement concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A wet desulphurization flue spraying device comprising an absorption tower (1), characterized in that: The side of the absorption tower (1) is provided with a heat exchange box (2), the side surface of the heat exchange box (2) is fixedly installed with an air extraction pump (5), the input end of the air extraction pump (5) is provided with a filtering mechanism (6), the output end of the air extraction pump (5) extends to the inner cavity of the heat exchange box (2) and is fixedly connected with a heat exchange curved pipe (4), the end of the heat exchange curved pipe (4) extends to the outside of the heat exchange box (2) and is fixedly connected with a second air guide pipe (3), the end of the second air guide pipe (3) is fixedly sleeved to the inner cavity of the absorption tower (1) and is fixedly connected with a gas injection ring pipe (7), the top surface of the gas injection ring pipe (7) is provided with a plurality of gas injection holes (8), the back of the absorption tower (1) is provided with a spraying mechanism (9), the top of the heat exchange box (2) is provided with a water inlet mechanism (10), the back surface of the heat exchange box (2) is fixedly installed with two servo motors (20), the output shafts of the two servo motors (20) extend to the inner cavity of the heat exchange box (2) and are fixedly connected with stirring fan blades (21), the inner wall of the heat exchange box (2) is fixedly installed with a temperature sensor (19), and the front surface of the heat exchange box (2) is fixedly installed with a control panel (30).

2. A wet desulphurization flue spraying device according to claim 1, characterized in that: The water inlet mechanism (10) comprises a water pump (16) fixedly installed on the top surface of the heat exchange box (2), the input end of the water pump (16) is fixedly connected with a water guide pipe (17), and the output end of the water pump (16) extends to the inner cavity of the heat exchange box (2).

3. A wet desulphurization flue spraying device according to claim 1, characterized in that: The filtering mechanism (6) comprises a filtering box (12) fixedly sleeved on the input end of the air extraction pump (5), the front surface of the filtering box (12) is hingedly connected with a sealing door (14), the end surface of the filtering box (12) is fixedly sleeved with a first air guide pipe (15), and the inner cavity of the filtering box (12) is fixedly sleeved with filter cotton (13).

4. A wet desulphurization flue spraying device according to claim 1, characterized in that: The spraying mechanism (9) comprises a liquid extraction pump (23) fixedly installed on the back of the absorption tower (1) and a plurality of demisting plates (22) fixedly sleeved in the inner cavity of the absorption tower (1), the input end of the liquid extraction pump (23) extends to the bottom of the inner cavity of the absorption tower (1), the output end of the liquid extraction pump (23) is fixedly connected with a liquid guide main pipe (24), the side surface of the liquid guide main pipe (24) is fixedly connected with a plurality of liquid guide branch pipes (25), the ends of the plurality of liquid guide branch pipes (25) extend to the inner cavity of the absorption tower (1) and are fixedly connected with liquid injection ring pipes (26), and the bottom surface of the liquid injection ring pipe (26) is provided with a plurality of atomizing holes (27).

5. A wet desulphurization flue spraying device according to claim 1, characterized in that: The side of the top end of the absorption tower (1) is fixedly sleeved with a third air guide pipe (28), and the end of the third air guide pipe (28) is fixedly connected with a chimney (29).

6. A wet desulphurization flue spraying device according to claim 1, characterized in that: The front surface of the heat exchange box (2) is fixedly sleeved with a glass window (11), and the side surface of the bottom end of the heat exchange box (2) is fixedly installed with a drain valve (18).

Images