A desulfurization and dust removal device

Abstract

The present application relates to desulfurization dust removal equipment field, especially to a kind of desulfurization dust removal equipment, including air inlet passage, connecting pipe, desulfurization tower and dust chamber;First flow guide component is arranged at the position opposite air inlet in air inlet passage;Second flow guide component is arranged in the middle of air inlet passage;Temperature adjusting device and humidifying device are arranged between first flow guide component and second flow guide component, temperature sensor and humidity sensor are arranged above second flow guide component;Third flow guide component is arranged at the adapter of connecting pipe and desulfurization tower;Reducing agent lance is arranged below third flow guide component;Fourth flow guide component is arranged at the bottom of desulfurization tower.The kind of desulfurization dust removal equipment can solve the problem that flue gas cannot be well distributed in prior art, improve the accuracy of temperature and humidity adjustment, improve the mixing degree with sprayed reducing agent and increase the amount of calcium sulfate sedimentation recovery.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of flue gas treatment equipment, in particular to a desulfurization and dust removal equipment. BACKGROUND

[0002] The desulfurization and dust removal equipment is used for desulfurization treatment of flue gas generated in industrial production process, which generally comprises a desulfurization tower and a desulfurization and dust removal equipment, and the flue gas forms calcium sulfate in the desulfurization tower, and then the calcium sulfate is collected and recovered through the desulfurization and dust removal equipment.

[0003] In order to avoid the water in the flue gas and the calcium sulfate to form sticky dirt and block the recovery components, the desulfurization and dust removal device disclosed in Chinese utility model patent ZL2018209079347 makes improvements on the traditional desulfurization and dust removal device.

[0004] For the desulfurization and dust removal device involved in Chinese utility model patent ZL2018209079347, the direction of flue gas flow is as shown in the figure: Figure 1 From the gas inlet to the gas inlet channel- from the bottom to the top in the gas inlet channel- from the connection pipe to the reduction tower- from the bottom to the top in the flue gas rising channel- from the exhaust port.

[0005] The applicant found in actual use that the flue gas would turn several times in the whole flow process, and after the flue gas turned, due to the inertia effect, the flue gas was easy to concentrate together, that is, the flue gas density was higher in some positions in the channel and the flue gas density was lower in some positions, so that the flue gas density in the channel was uneven, which affected the accuracy of the subsequent temperature and humidity adjustment of the flue gas, the mixing of the flue gas and the sprayed reducing agent, the fullness of the desulfurization reaction and the amount of calcium sulfate deposition and recovery, thereby affecting the desulfurization and dust removal effect.

[0006] Therefore, it is necessary to improve the problems existing in the prior art. SUMMARY

[0007] The purpose of the present application is to provide a desulfurization and dust removal equipment, which aims to solve the problem that the flue gas cannot be well distributed in the prior art.

[0008] In order to achieve the above-mentioned purpose, the present application provides a desulfurization and dust removal equipment, which comprises an air inlet channel, a connecting pipe, a desulfurization tower and a dust removal chamber; the bottom of the vertically arranged air inlet channel is provided with a horizontal air inlet, the top of the air inlet channel is communicated with the first end of the horizontally arranged connecting pipe, the second end of the connecting pipe is communicated with the top of the vertically arranged desulfurization tower, the bottom of the dust removal chamber is provided with a plurality of recovery cylinders, the middle part of the dust removal chamber is provided with a concave pipe, the outer wall of the concave pipe and the inner wall of the dust removal chamber form a flue gas rising channel, the bottom of the desulfurization tower is communicated with the flue gas rising channel, and the dust removal chamber is provided with an exhaust port communicated with the flue gas rising channel; a first flow guide assembly is arranged at a position opposite to the air inlet in the air inlet channel; a second flow guide assembly is arranged in the middle part of the air inlet channel; a temperature adjusting device and a humidifying device are arranged between the first flow guide assembly and the second flow guide assembly; a temperature sensor and a humidity sensor are arranged above the second flow guide assembly; a third flow guide assembly is arranged at the transition between the connecting pipe and the desulfurization tower; a reducing agent lance is arranged below the third flow guide assembly; and a fourth flow guide assembly is arranged at the bottom of the desulfurization tower.

[0009] Further, the first flow guide assembly comprises a first flow guide plate arranged obliquely and a second flow guide plate arranged horizontally, the second flow guide plate is located above the first flow guide plate, the first end of the first flow guide plate close to the air inlet is higher than the end away from the air inlet; the first flow guide plate is a grid plate, and the second flow guide plate is a porous plate.

[0010] Further, the second flow guide assembly comprises a third flow guide plate arranged obliquely, the first end of the third flow guide plate close to the air inlet is higher than the end away from the air inlet; the third flow guide plate is a grid plate.

[0011] Further, the third flow guide assembly comprises a fourth flow guide plate arranged obliquely, the first end of the fourth flow guide plate close to the connecting pipe is lower than the end away from the connecting pipe; the fourth flow guide plate is a grid plate.

[0012] Further, the fourth flow guide assembly comprises a fifth flow guide plate, a sixth flow guide plate and a surrounding plate; the fifth flow guide plate is surrounded by an inclined plate, the vertical section of the fifth flow guide plate is trapezoidal, and the upper part and the lower part of the fifth flow guide plate are both provided with openings; the sixth flow guide plate is provided with a plurality of ventilation openings, and the sixth flow guide plate is arranged at the opening of the lower part of the fifth flow guide plate; the surrounding plate is surrounded by a vertically arranged porous plate, and the surrounding plate surrounds the fifth flow guide plate.

[0013] Further, the top of the outer wall of the fifth flow guide plate is provided with a blowing pipe, and the blowing pipe is provided with a blowing nozzle.

[0014] Furthermore, there are two reducing agent spray guns, which are arranged opposite to each other.

[0015] Furthermore, a spare spray gun is also provided, and the spare spray gun is at a 90° angle to the two reducing agent spray guns.

[0016] Furthermore, a partition is provided between the outer wall of the recessed tube and the inner wall of the outer shell, the partition dividing the flue gas rising channel into multiple regions.

[0017] Furthermore, a perforated plate is provided above the partition, a pulse jet nozzle is provided above the perforated plate, and the exhaust port is located above the perforated plate.

[0018] The desulfurization and dust removal equipment provided by this invention includes a first flow guiding component positioned opposite the air inlet in the air inlet channel. This first flow guiding component evenly distributes the flue gas, preventing concentration caused by deflection. After being evenly distributed, the flue gas rises, where a temperature regulating device and a humidifying device regulate its temperature and humidity. As the flue gas continues to rise, it is further evenly distributed by a second flow guiding component, which provides a more uniform temperature regulation and humidification effect. Only after passing through the second flow guiding component does the flue gas pass through the temperature sensor and humidifier. The temperature and humidity sensors provide more accurate temperature and humidity readings, facilitating precise feedback of these data. A third flow guide component is installed at the junction of the connecting pipe and the desulfurization tower to evenly distribute the flue gas and prevent concentration caused by deflection. A fourth flow guide component is located at the bottom of the desulfurization tower, ensuring the flue gas is evenly distributed above each recovery cylinder, resulting in a more uniform amount of calcium sulfate recovered from each cylinder. This component also slows the flue gas flow rate, promoting better settling of calcium sulfate into the recovery cylinders. In summary, compared to existing technologies, this desulfurization and dust removal equipment solves the problem of uneven flue gas distribution, improves the accuracy of temperature and humidity control, enhances the mixing with the sprayed reducing agent, and increases the amount of calcium sulfate recovered through settling. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of flue gas flow inside existing desulfurization and dust removal equipment;

[0020] Figure 2 This is a simplified structural diagram of the desulfurization and dust removal equipment of the present invention;

[0021] Figure 3 This is a 3D structural diagram of the second deflector.

[0022] Figure 4 yes Figure 2 A magnified view of a portion at point A;

[0023] Figure 5 FIG. 8 is a perspective view of a fifth flow guide plate;

[0024] Figure 6 FIG. 9 is a perspective view of a sixth flow guide plate;

[0025] Figure 7 FIG. 10 is a perspective view of a surrounding plate;

[0026] Figure 8 FIG. 11 is an internal structure view of a dust removal chamber;

[0027] Figure 9 FIG. 12 is a perspective view of a fifth flow guide plate with a blowing pipe arranged at the top of the outer wall thereof.

[0028]

BRIEF DESCRIPTION OF THE DRAWINGS

[0029] 1 - air inlet channel, 11 - air inlet, 12 - temperature adjusting device, 13 - humidifying device, 14 - temperature sensor, 15 - humidity sensor;

[0030] 2 - connecting pipe;

[0031] 3 - desulfurization tower, 31 - reducing agent spray gun, 32 - backup spray gun;

[0032] 4 - dust removal chamber, 41 - recovery cylinder, 42 - lower recessed pipe, 43 - flue gas rising channel, 44 - exhaust port, 45 - partition plate, 46 - flower plate, 47 - pulse air jet nozzle;

[0033] 5 - first flow guide assembly, 51 - first flow guide plate, 52 - second flow guide plate;

[0034] 6 - second flow guide assembly, 61 - third flow guide plate;

[0035] 7 - third flow guide assembly, 71 - fourth flow guide plate;

[0036] 8 - fourth flow guide assembly, 81 - fifth flow guide plate, 811 - inclined plate, 812 - opening, 82 - sixth flow guide plate, 821 - ventilation opening, 83 - surrounding plate, 84 - blowing pipe, 85 - blowing nozzle. DETAILED DESCRIPTION

[0037] The application will be described in detail below in conjunction with specific embodiments.

[0038] In this invention, unless otherwise explicitly specified and limited, the terms such as "set in," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] This invention provides a desulfurization and dust removal device, such as... Figures 1 to 9 As shown, the system includes an air inlet channel 1, a connecting pipe 2, a desulfurization tower 3, and a dust removal chamber 4. The bottom of the vertically arranged air inlet channel 1 has a horizontal air inlet 11. The top of the air inlet channel 1 is connected to the first end of the horizontally arranged connecting pipe 2, and the second end of the connecting pipe 2 is connected to the top of the vertically arranged desulfurization tower 3. The bottom of the dust removal chamber 4 has multiple recovery cylinders 41, and the middle of the dust removal chamber 4 has a recessed pipe 42. The outer wall of the recessed pipe 42 and the inner wall of the dust removal chamber 4 form a flue gas rising channel 43. The bottom of the desulfurization tower 3 is connected to the flue gas rising channel 43. The dust removal chamber 4 is equipped with a connection to the flue gas rising channel 43. The exhaust port 44 is connected to the air intake 1; a first flow guide assembly 5 is provided in the air intake 1 at a position opposite to the air intake port 11; a second flow guide assembly 6 is provided in the middle of the air intake 1; a temperature regulating device 12 and a humidifying device 13 are provided between the first flow guide assembly 5 and the second flow guide assembly 6; a temperature sensor 14 and a humidity sensor 15 are provided above the second flow guide assembly 6; a third flow guide assembly 7 is provided at the junction of the connecting pipe 2 and the desulfurization tower 3; a reducing agent spray gun 31 is provided below the third flow guide assembly 7; and a fourth flow guide assembly 8 is provided at the bottom of the desulfurization tower 3.

[0040] Based on the above structure, the desulfurization and dust removal equipment is provided with the first flow guide assembly 5 at the position opposite to the gas inlet 11 in the gas inlet channel 1. The first flow guide assembly 5 uniformly distributes the flue gas to avoid the concentration of flue gas caused by turning. After the flue gas is uniformly distributed, it rises upward. The temperature adjusting device 12 and the humidifying device 13 adjust the temperature and humidity of the flue gas. The flue gas continues to rise and is uniformly distributed by the second flow guide assembly 6. The second flow guide assembly 6 can make the temperature adjusting effect and the humidifying effect of the flue gas after temperature adjustment and humidification more uniform. After the action of the second flow guide assembly 6, the flue gas passes through the temperature sensor 14 and the humidity sensor 15. At this time, the temperature and humidity detected by the temperature sensor 14 and the humidity sensor 15 are more accurate, which is beneficial to accurately feed back the temperature and humidity information and adjust the adjustment amount of the temperature adjusting device 12 and the humidifying device 13 through the corresponding controller of the external device. The third flow guide assembly 7 is arranged at the connection between the connecting pipe 2 and the desulfurization tower 3. The third flow guide assembly 7 uniformly distributes the flue gas to avoid the concentration of flue gas caused by turning. The reducing agent lance 31 is arranged below the third flow guide assembly 7. The flue gas is uniformly distributed by the third flow guide assembly 7 and then mixed with the reducing agent, thereby improving the mixing and desulfurization reaction effect. The fourth flow guide assembly 8 is arranged at the bottom of the desulfurization tower 3. The fourth flow guide assembly 8 can uniformly distribute the flue gas above each recovery cylinder 41, so that the amount of calcium sulfate recovered by each recovery cylinder 41 is basically the same. The fourth flow guide assembly 8 can also slow down the flow rate of the flue gas, so that the calcium sulfate can better settle in the recovery cylinder 41.

[0041] In the embodiment, the first flow guide assembly 5 includes the first flow guide plate 51 arranged obliquely and the second flow guide plate 52 arranged horizontally. The second flow guide plate 52 is located above the first flow guide plate 51. The first end of the first flow guide plate 51 close to the gas inlet 11 is higher than the end away from the gas inlet 11. The first flow guide plate 51 with the above structure is used to avoid the concentration of flue gas when turning. The cooperation of the first flow guide plate 51 and the second flow guide plate 52 can avoid the concentration of flue gas and achieve uniform distribution, so that the flue gas can rise uniformly. Preferably, the first flow guide plate 51 is a grid plate, and the second flow guide plate 52 is a porous plate. Figure 2In the shown structure, for the transversely flowing flue gas entering the air inlet channel 1, the flue gas at the upper layer will contact the right part of the first flow guide plate 51, and the flue gas will flow upward from the right part of the first flow guide plate 51; the flue gas at the middle layer will contact the middle part of the first flow guide plate 51, and the flue gas will flow upward from the middle part of the first flow guide plate 51; the flue gas at the lower layer will contact the left part of the first flow guide plate 51, and the flue gas will flow upward from the left part of the first flow guide plate 51, that is, the flue gas can uniformly rise. Through simulation by using virtual software and actual use test, the inclination angle of the first flow guide plate 51 is 20-30°, and the most preferred angle is 26-27°. After the inclination angle range of the first flow guide plate 51 is set as above, the second flow guide plate 52 arranged in parallel can have the best anti-concentration and uniform distribution effect. Of course, the first flow guide assembly 5 in other structural forms can also be used, as long as the above functions can be realized, and similar replacement also falls within the protection scope of the present application.

[0042] In the present embodiment, the second flow guide assembly 6 includes the third flow guide plate 61 arranged obliquely, and the first end of the third flow guide plate 61 close to the air inlet 11 is higher than the end away from the air inlet 11. The third flow guide plate 61 in the above structure is used to make the temperature adjusting effect and humidifying effect of the flue gas after being temperature adjusted and humidified more uniform. Through simulation by using virtual software and actual use test, preferably, the third flow guide plate 61 is a grid plate. The inclination angle of the third flow guide plate 61 is 40-50°, and the most preferred angle is 45°. After the inclination angle range of the third flow guide plate 61 is set as above, the best functional effect is obtained. Of course, the second flow guide assembly 6 in other structural forms can also be used, as long as the above functions can be realized, and similar replacement also falls within the protection scope of the present application.

[0043] In the present embodiment, the third flow guide assembly 7 includes the fourth flow guide plate 71 arranged obliquely, and the first end of the fourth flow guide plate 71 close to the connecting pipe 2 is lower than the end away from the connecting pipe 2. The fourth flow guide plate 71 in the above structure is used to avoid the concentration of flue gas caused by turning. The fourth flow guide plate 71 is a grid plate. The fourth flow guide plate 71 is a grid plate, and the fourth flow guide plate 71 is arranged obliquely. Thus, when the transversely flowing flue gas contacts the fourth flow guide plate 71, the flue gas will be separated by the grid plate, like Figure 2In the shown structure, after the flue gas flowing transversely enters the desulfurization tower 3, the flue gas at the upper layer contacts the left part of the fourth guide plate 71, and the flue gas flows downward from the left part of the fourth guide plate 71; the flue gas at the middle layer contacts the middle part of the fourth guide plate 71, and the flue gas flows downward from the middle part of the fourth guide plate 71; the flue gas at the lower layer contacts the right part of the fourth guide plate 71, and the flue gas flows downward from the right part of the fourth guide plate 71, that is, the flue gas can uniformly sink. Through simulation by virtual software and actual use test, the inclination angle of the fourth guide plate 71 is 10-20°, and the most preferred angle is 15°. After the inclination angle range of the fourth guide plate 71 is set as above, the best anti-aggregation and uniform distribution effect can be achieved. Of course, the third guide assembly 7 in other structural forms can also be used, as long as the above functions can be achieved, and similar replacements also fall within the protection scope of the present application.

[0044] In the present embodiment, the fourth guide assembly 8 comprises a fifth guide plate 81, a sixth guide plate 82 and a surrounding plate 83; the fifth guide plate 81 is enclosed by an inclined plate 811, and the vertical section of the fifth guide plate 81 is trapezoidal, and the upper part and the lower part of the fifth guide plate 81 are both provided with openings 812; the sixth guide plate 82 is provided with a plurality of ventilation openings 821, and the sixth guide plate 82 is arranged at the opening 812 at the lower part of the fifth guide plate 81; the surrounding plate 83 is enclosed by a plurality of vertical porous plates, and the surrounding plate 83 surrounds the fifth guide plate 81. By arranging the fifth guide plate 81, the sixth guide plate 82 and the surrounding plate 83 and specially designing the structure of the fifth guide plate 81, the sixth guide plate 82 and the surrounding plate 83, the flue gas can be uniformly distributed at the bottom of the dust removal chamber 4, and the amount of calcium sulfate recovered by each recovery cylinder 41 is basically the same; moreover, the structural arrangement of the three components and the position cooperation therebetween can make the forward path of most of the flue gas become bent rather than straight, can slow down the flow rate of the flue gas, can make the calcium sulfate better settle into the recovery cylinder 41, and can improve the recovery efficiency. Of course, the fourth guide assembly 8 in other structural forms can also be used, as long as the above functions can be achieved, and similar replacements also fall within the protection scope of the present application.

[0045] After the flue gas enters the fifth guide plate 81 from the opening 812 at the upper part of the fifth guide plate 81, the flue gas flows out through the sixth guide plate 82, and the structure of the sixth guide plate 82 can slow down the flue gas; after the flue gas disperses from the fifth guide plate 81 to the periphery, the flue gas flows out through the surrounding plate 83, and the structure of the surrounding plate 83 can slow down the flue gas.

[0046] In actual production, the shape and size of the fifth guide plate 81, the sixth guide plate 82 and the surrounding plate 83 can be changed according to the shape of the dust removal chamber 4 and the number of the recovery cylinders 41. The fifth guide plate 81 is set to have a trapezoidal vertical section so as to make the upper opening small, so that only an appropriate amount of flue gas enters the upper opening of the fifth guide plate 81 and is discharged from the lower opening, and then the calcium sulfate falls into the recovery cylinder 41 located in the middle, and other flue gas is dispersed around, and the calcium sulfate falls into the recovery cylinders 41 around, so as to achieve the purpose of uniform distribution of flue gas. In the embodiment provided by the present application, the dust removal chamber 4 is in the shape of a cuboid, and accordingly the fifth guide plate 81 is set to be in the shape of a quadrangular frustum, the sixth guide plate 82 is in the shape of a quadrangular plate, and the surrounding plate 83 is in the shape of a quadrangular wall; when the shape of the dust removal chamber 4 is changed, for example, when the dust removal chamber 4 is in the shape of a cylinder, the fifth guide plate 81 can be set to be in the shape of a frustum, the sixth guide plate 82 is in the shape of a circular plate, and the surrounding plate 83 is in the shape of a cylindrical wall, so as to achieve the purpose of uniform distribution of flue gas; similarly, for the dust removal chamber 4 in other shapes, the shape of the fifth guide plate 81, the sixth guide plate 82 and the surrounding plate 83 can also be changed adaptively according to the above principle. Similar replacements also fall within the protection scope of the present application.

[0047] In the embodiment, the sixth guide plate 82 is spliced by a plurality of concentric square frames, and gaps are formed between adjacent square frames and constitute the ventilation openings 821. Further preferably, the cross-sectional shape of the square frame is trapezoidal. In production, the sixth guide plate 82 is spliced by a plurality of square frames which gradually increase, and adjacent square frames are connected by connecting strips.

[0048] In the embodiment, the fifth guide plate 81 is in the shape of a quadrangular frustum, the sixth guide plate 82 is in the shape of a quadrangular plate, and the surrounding plate 83 is in the shape of a quadrangular wall. Such a setting is for corresponding to the cuboid-shaped dust removal chamber 4.

[0049] In the embodiment, the bottom of the dust removal chamber 4 is provided with nine recovery cylinders 41, which are evenly distributed in a three-by-three arrangement on the bottom of the dust removal chamber 4, and the recovery cylinder 41 in the middle is opposite to the lower concave pipe 42. A partition plate 45 is arranged between the outer wall of the lower concave pipe 42 and the inner wall of the shell of the dust removal chamber 4, and the partition plate 45 divides the flue gas rising channel 43 into multiple areas. In this way, the recovery cylinder 41 in the middle is opposite to the lower concave pipe 42, and the other eight recovery cylinders 41 are respectively opposite to the multiple areas separated by the partition plate 45. After the flue gas is evenly distributed by the fourth flow guide assembly 8, the amount of flue gas in each area is basically the same, so that the amount of calcium sulfate that can be recovered by the nine recovery cylinders 41 is basically the same. The areas separated by the partition plate 45 can be eight, which are opposite to the eight recovery cylinders 41. Of course, the areas separated by the partition plate 45 can also be more. The flue gas has been evenly distributed at the bottom of the shell, and the purpose of separating multiple areas is to enable the flue gas to rise vertically, so that the evenly distributed flue gas cannot randomly string in the horizontal direction and affect the uniform distribution effect. Therefore, the number of areas separated by the partition plate 45 is multiple.

[0050] In the embodiment, the top of the outer wall of the fifth flow guide plate 81 is provided with a blowing pipe 84, and the blowing pipe 84 is provided with a blowing nozzle 85. The arrangement of the blowing pipe 84 and the blowing nozzle 85 can avoid the accumulation of calcium sulfate on the outer wall surface of the fifth flow guide plate 81.

[0051] In the embodiment, the number of reducing agent spray guns 31 is two, and the two reducing agent spray guns 31 are oppositely arranged. The two oppositely arranged reducing agent spray guns 31 can enable the reducing agent to be better sprayed into the flue gas. Preferably, a standby spray gun 32 is also provided, and the standby spray gun 32 is 90° with respect to the two reducing agent spray guns 31. The standby spray gun 32 can be opened when necessary.

[0052] In the embodiment, a flower plate 46 is arranged above the partition plate 45, and a pulse jet nozzle 47 is arranged above the flower plate 46. The flower plate 46 and the pulse jet nozzle 47 are prior art and will not be described in detail in the present application. Further preferably, the exhaust port 44 is located above the flower plate 46. Such an arrangement can minimize the possibility of flue gas entering the exhaust port 44.

[0053] In summary, the desulfurization and dust removal equipment can solve the problem that the flue gas cannot be well distributed in the prior art, improve the accuracy of temperature and humidity adjustment, improve the mixing degree with the sprayed reducing agent, and increase the amount of calcium sulfate settlement recovery.

[0054] In the case of no conflict, the above-mentioned embodiments and features in the embodiments can be combined with each other.

[0055] It should be pointed out finally that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the protection scope of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present application.

Claims

1. A desulfurization and dust removal device, comprising an air inlet channel, a connecting pipe, a desulfurization tower, and a dust removal chamber; The vertically arranged air inlet channel has a horizontal air inlet at its bottom. The top of the air inlet channel is connected to the first end of the horizontally arranged connecting pipe, and the second end of the connecting pipe is connected to the top of the vertically arranged desulfurization tower. Multiple recovery cylinders are arranged at the bottom of the dust removal chamber. A recessed pipe is arranged in the middle of the dust removal chamber. The outer wall of the recessed pipe and the inner wall of the dust removal chamber form a flue gas rising channel. The bottom of the desulfurization tower is connected to the flue gas rising channel. The dust removal chamber is provided with an exhaust port connected to the flue gas rising channel. The characteristic feature is that: A first flow guide assembly is provided in the air intake channel at a position opposite to the air intake port; the first flow guide assembly includes an inclined first flow guide plate and a horizontally arranged second flow guide plate, the inclination angle of the first flow guide plate is 20-30°, the second flow guide plate is located above the first flow guide plate, and the first end of the first flow guide plate near the air intake port is higher than the end away from the air intake port; the first flow guide plate is a grille plate, and the second flow guide plate is a perforated plate; A second flow guide assembly is provided in the middle of the air intake channel; the second flow guide assembly includes an inclined third flow guide plate with an inclination angle of 40-50°, and the first end of the third flow guide plate near the air intake is higher than the end away from the air intake; the third flow guide plate is a grille plate; A temperature regulating device and a humidifying device are provided between the first flow guiding component and the second flow guiding component, and a temperature sensor and a humidity sensor are provided above the second flow guiding component. A third flow guiding component is provided at the junction of the connecting pipe and the desulfurization tower; A reducing agent spray gun is provided below the third flow guiding assembly; A fourth flow guiding assembly is provided at the bottom of the desulfurization tower. The fourth flow guiding assembly includes a fifth flow guiding plate, a sixth flow guiding plate, and a surrounding plate. The fifth flow guiding plate is formed by inclined plates, and its vertical cross-section is trapezoidal. Openings are provided at both the upper and lower parts of the fifth flow guiding plate. The sixth flow guiding plate has multiple ventilation openings and is located at the lower opening of the fifth flow guiding plate. The surrounding plate is formed by vertically arranged perforated plates and surrounds the fifth flow guiding plate. The surrounding plate is used to slow down the flue gas that disperses from the fifth flow guiding plate to the surrounding area.

2. The desulfurization and dust removal equipment according to claim 1, characterized in that: The third flow guiding component includes an inclined fourth flow guiding plate, wherein the first end of the fourth flow guiding plate near the connecting pipe is lower than the end away from the connecting pipe; The fourth guide plate is a grid plate.

3. The desulfurization and dust removal equipment according to claim 1, characterized in that: An air blowing pipe is provided at the top of the outer wall of the fifth guide plate, and the air blowing pipe is provided with an air blowing nozzle.

4. The desulfurization and dust removal equipment according to claim 1, characterized in that: The number of reducing agent spray guns is two, and the two reducing agent spray guns are arranged opposite each other.

5. The desulfurization and dust removal equipment according to claim 4, characterized in that: A spare spray gun is also provided, which is at a 90° angle to both of the reducing agent spray guns.

6. The desulfurization and dust removal equipment according to any one of claims 1 to 5, characterized in that: A partition is provided between the outer wall of the recessed tube and the inner wall of the outer shell of the dust removal chamber, and the partition divides the flue gas rising channel into multiple areas.

7. The desulfurization and dust removal equipment according to claim 6, characterized in that: A perforated plate is provided above the partition plate, a pulse jet nozzle is provided above the perforated plate, and the exhaust port is located above the perforated plate.

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