Flue gas dust removal and desulfurization device for thermal power generation

Abstract

The utility model relates to the technical field of flue gas purification, in particular to a flue gas dust removal and desulfurization device for thermal power generation, which comprises a first tank body and a water valve, and the water valve is arranged on the outer side wall of the first tank body in a communicated manner; the conveying hopper is installed at the bottom in the first tank body, the bottom end of the conveying hopper communicates with the air inlet device, the air inlet device is used for conveying flue gas into the conveying hopper, the multiple sets of heat exchange pipes communicate with the top end of the conveying hopper, and the top ends of the multiple sets of heat exchange pipes are connected with the outer side wall of the partition plate; the filtering device is arranged on the partition plate and used for filtering flue gas, the desulfurization assembly is communicated with the interior of the first tank body and used for conducting desulfurization treatment on the flue gas, the flue gas purification treatment effect is improved, the flue gas heat recycling effect is improved, and the energy utilization rate is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas purification, in particular to a flue gas dust removal and desulfurization device for thermal power generation. Background Art

[0002] As the main energy supply mode, thermal power generation has promoted economic development while also bringing about serious environmental pollution problems. Among them, sulfur dioxide (SO2) and particulate matter emissions in flue gas have become the main environmental challenges facing the thermal power generation industry. In order to reduce the emission of harmful substances in flue gas and improve air quality, flue gas dust removal and desulfurization equipment came into being.

[0003] As in the patent with prior art authorization announcement number CN205084607U, the utility model discloses a flue gas dust removal and desulfurization device, which includes a dust removal device and a desulfurization device connected in sequence, the dust removal device includes a smoke channel bin and a smoke dust storage bin divided by a partition, one end of the smoke channel bin is connected to the smoke air inlet pipe, and the other end is provided with a filter screen, the partition is provided with a notch below the filter screen to facilitate the smoke to fall from the smoke channel bin to the smoke dust storage bin.

[0004] However, it was found during the use of the device that it is not convenient to recover the heat in the flue gas, and the smoke and the atomized ammonia water are not fully mixed, which reduces the desulfurization effect of the smoke. Summary of the invention

[0005] In order to solve the above technical problems, the utility model provides a flue gas dust removal and desulfurization device for thermal power generation, which can improve the purification effect of flue gas, improve the heat recovery effect of flue gas, and improve the energy utilization rate.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a flue gas dust removal and desulfurization device for thermal power generation, including a first tank body and a water valve, the water valve is connected and arranged on the outer wall of the first tank body; it also includes an air intake device, a filtering device, a desulfurization component, a conveying bucket, a heat exchange pipe and a partition, the conveying bucket is installed at the bottom of the first tank body, the bottom end of the conveying bucket is connected to the air intake device, the air intake device is used to convey the flue gas to the inside of the conveying bucket, multiple groups of heat exchange pipes are connected and arranged at the top of the conveying bucket, the tops of multiple groups of heat exchange pipes are connected to the outer wall of the partition, the filtering device is arranged on the partition, the filtering device is used to filter the flue gas, the desulfurization component is connected to the first tank The bodies are connected, and the desulfurization component is used for desulfurizing the flue gas; the flue gas is transported to the inside of the conveying bucket through the air intake device, the flue gas in the conveying bucket is diverted and flows upward through multiple groups of heat exchange tubes, and then the particulate matter in the flue gas is filtered and processed by the filtering device, and then the flue gas is desulfurized by the desulfurization component to improve the purification effect of the device on the flue gas, and normal temperature water is circulated and transported in the first tank body through the water valve. When the flue gas flows through the multiple groups of heat exchange tubes, the heat of the flue gas will heat the multiple groups of heat exchange tubes, and the multiple groups of heat exchange tubes will heat the water in the first tank body, thereby improving the heat recovery and utilization effect of the flue gas and improving the energy utilization rate.

[0007] Preferably, the filtering device comprises a support plate, a filter screen, a bellows, a guide column, a spring and a vibration motor, multiple groups of filter screens are mounted on the support plate, multiple groups of bellows bottom ends are mounted on the partition, and multiple groups of bellows are respectively connected with multiple groups of heat exchange tubes, multiple groups of bellows top ends are mounted on the support plate, and multiple groups of bellows are respectively connected with multiple groups of filter screens, multiple groups of guide columns are mounted on the top end of the partition, the support plate is slidably mounted on the multiple groups of guide columns, multiple groups of springs are respectively fitted on the outer side walls of the multiple groups of guide columns, and the vibration motor is mounted on the top end of the support plate; the flue gas discharged from the multiple groups of heat exchange tubes flows upward through the multiple groups of bellows, and the flue gas is filtered through the multiple groups of filter screens, so that the particulate matter and dirt in the flue gas are deposited at the bottom of the filter screen, and the filtered flue gas is discharged through the top end of the first tank body, and when the filter screen needs to be cleaned, the vibration motor is turned on to drive the support plate to vibrate up and down, so that the support plate vibrates the multiple groups of filter screens, thereby causing the dirt deposited at the bottom of the filter screen to fall downward, which is convenient for automatic cleaning of the multiple groups of filter screens.

[0008] Preferably, the desulfurization component includes a conveying pipe, a desulfurization box, a guide plate, a pump body and a water spray pipe, the input end of the conveying pipe is connected and arranged at the top of the first tank body, the output end of the conveying pipe is connected and arranged at the lower part of the desulfurization box, an exhaust port is arranged at the top of the desulfurization box, a plurality of groups of guide plates are respectively installed on the inner wall of the desulfurization box at staggered positions, and the top surfaces of the plurality of groups of guide plates are all arranged as inclined surfaces, the input end of the pump body is connected with the desulfurization box, the water spray pipe is connected and arranged on the output end of the pump body, and the output end of the water spray pipe extends into the interior of the desulfurization box; the flue gas discharged from the first tank body is conveyed to the interior of the desulfurization box through the conveying pipe, and the flue gas entering the desulfurization box flows from bottom to top, at this time, the liquid containing the oxidant at the bottom of the desulfurization box is extracted by the pump body, and the extracted liquid is sprayed in the desulfurization box from top to bottom through the water spray pipe, so that the flue gas is desulfurized after the liquid contacts the flue gas, and the flue gas is guided and conveyed by a plurality of groups of guide plates, the flow distance of the flue gas is increased, and the contact time between the flue gas and the liquid is increased, thereby improving the flue gas desulfurization effect.

[0009] Preferably, the air intake device includes a second tank body, an air intake pipe and a closed door. The second tank body is connected and arranged at the bottom end of the conveying bucket, the air intake pipe is connected and arranged on the outer side wall of the second tank body, and the closed door is connected and arranged at the lower part of the outer side wall of the second tank body; the dirt at the bottom of multiple groups of filter screens falls into the interior of the second tank body through the conveying bucket, and the filtered dirt is discharged and cleaned by opening the closed door, and the smoke is transported to the interior of the second tank body through the air intake pipe, and the smoke is transported to the interior of the conveying bucket through the second tank body, which is convenient for smoke purification treatment.

[0010] Preferably, it also includes a paddle and a drive motor, the paddle is rotatably mounted on the inner wall of the second tank body, the drive motor is mounted on the bottom end of the second tank body, and the output end of the drive motor is connected to the bottom end of the paddle; by turning on the drive motor to drive the paddle to rotate, the paddle scrapes and cleans the inner wall of the conveying bucket in the second tank body, thereby facilitating the cleaning and discharge of fallen dirt.

[0011] Preferably, it also includes an exhaust hood, which is connected to the exhaust port of the desulfurization box. By arranging the exhaust hood, the protection effect at the exhaust port of the desulfurization box is improved.

[0012] Preferably, it also includes an activated carbon layer, which is arranged inside the exhaust hood; the smoke discharged from the exhaust hood is adsorbed and filtered by the activated carbon layer, thereby improving the purification effect of the smoke.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the flue gas is transported to the inside of the conveying bucket through the air intake device, the flue gas in the conveying bucket is diverted and flows upward through multiple groups of heat exchange tubes, and then the particulate matter in the flue gas is filtered and treated by the filtering device, and then the flue gas is desulfurized by the desulfurization component, thereby improving the purification effect of the device on the flue gas, and normal temperature water is circulated and transported in the first tank body through the water valve. When the flue gas flows through the multiple groups of heat exchange tubes, the heat of the flue gas heats the multiple groups of heat exchange tubes, and the multiple groups of heat exchange tubes heat the water in the first tank body, thereby improving the heat recovery and utilization effect of the flue gas and improving energy utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the axonometric structure of the utility model;

[0015] Figure 2 It is an axonometric structural diagram of the connection between the first tank body and the water valve, etc.;

[0016] Figure 3 It is a schematic diagram of the axonometric partial structure of the connection between the support plate and the filter screen;

[0017] Figure 4 It is a schematic diagram of the axonometric local structure of the connection between the conveying bucket and the heat exchange tube;

[0018] Figure 5 It is a schematic diagram of the axonometric structure of the connection between the desulfurization box and the guide plate.

[0019] Markings in the attached figure: 1. first tank body; 2. water valve; 3. conveying bucket; 4. heat exchange tube; 5. partition; 6. support plate; 7. filter screen; 8. bellows; 9. guide column; 10. spring; 11. vibration motor; 12. conveying pipe; 13. desulfurization box; 14. guide plate; 15. pump body; 16. water spray pipe; 17. second tank body; 18. air inlet pipe; 19. closing door; 20. paddle; 21. drive motor; 22. exhaust hood; 23. activated carbon layer. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0021] Embodiment 1:

[0022] like Figure 1 and 3As shown, this embodiment provides a flue gas dust removal and desulfurization device for thermal power generation, including a first tank body 1 and a water valve 2, the water valve 2 is connected and arranged on the outer wall of the first tank body 1; it also includes an air intake device, a filtering device, a desulfurization component, a conveying bucket 3, a heat exchange tube 4 and a partition 5, the conveying bucket 3 is installed at the bottom of the first tank body 1, the bottom end of the conveying bucket 3 is connected to the air intake device, the air intake device is used to convey the flue gas to the inside of the conveying bucket 3, multiple groups of heat exchange tubes 4 are connected and arranged at the top of the conveying bucket 3, the tops of the multiple groups of heat exchange tubes 4 are connected to the outer wall of the partition 5, the filtering device is arranged on the partition 5, the filtering device is used to filter the flue gas, the desulfurization component is connected to the first tank body 1, and the desulfurization component is used to desulfurize the flue gas;

[0023] like Figure 3 As shown, the filtering device includes a support plate 6, a filter screen 7, a bellows 8, a guide column 9, a spring 10 and a vibration motor 11, multiple groups of filter screens 7 are installed on the support plate 6, the bottom ends of multiple groups of bellows 8 are installed on the partition 5, and multiple groups of bellows 8 are respectively connected with multiple groups of heat exchange tubes 4, the top ends of multiple groups of bellows 8 are installed on the support plate 6, and multiple groups of bellows 8 are respectively connected with multiple groups of filter screens 7, multiple groups of guide columns 9 are installed on the top of the partition 5, the support plate 6 is installed on the multiple groups of guide columns 9 for sliding up and down, multiple groups of springs 10 are respectively fitted on the outer side walls of multiple groups of guide columns 9, and the vibration motor 11 is installed on the top of the support plate 6;

[0024] In this embodiment, the flue gas is transported to the inside of the conveying bucket 3 through the air intake device, the flue gas in the conveying bucket 3 is diverted and flows upward through multiple groups of heat exchange tubes 4, and then the particulate matter in the flue gas is filtered and processed by the filtering device, and then the flue gas is desulfurized by the desulfurization component to improve the purification effect of the device on the flue gas, and normal temperature water is circulated and transported in the first tank body 1 through the water valve 2. When the flue gas flows through the multiple groups of heat exchange tubes 4, the heat of the flue gas heats the multiple groups of heat exchange tubes 4, and the multiple groups of heat exchange tubes 4 heat the water in the first tank body 1, thereby improving the heat recovery and utilization effect of the flue gas and improving energy utilization.

[0025] Embodiment 2:

[0026] On the basis of Example 1, Figure 2 As shown, the present embodiment provides a flue gas dust removal and desulfurization device for thermal power generation, wherein the desulfurization assembly includes a delivery pipe 12, a desulfurization box 13, a guide plate 14, a pump body 15 and a water spray pipe 16, the delivery pipe 12 input end is connected and arranged at the top of the first tank body 1, the delivery pipe 12 output end is connected and arranged at the lower part of the desulfurization box 13, the desulfurization box 13 is provided with an exhaust port at the top, multiple groups of guide plates 14 are respectively installed on the inner wall of the desulfurization box 13 at staggered positions, and the top surfaces of the multiple groups of guide plates 14 are all arranged as inclined surfaces, the pump body 15 input end is connected with the desulfurization box 13, the water spray pipe 16 is connected and arranged at the output end of the pump body 15, and the output end of the water spray pipe 16 extends into the desulfurization box 13;

[0027] like Figure 3 As shown, the air intake device includes a second tank body 17, an air intake pipe 18 and a closed door 19. The second tank body 17 is connected and arranged at the bottom end of the conveying bucket 3. The air intake pipe 18 is connected and arranged on the outer side wall of the second tank body 17. The closed door 19 is connected and arranged at the lower part of the outer side wall of the second tank body 17.

[0028] like Figure 4 As shown, it also includes a paddle 20 and a drive motor 21, the paddle 20 is rotatably mounted on the inner wall of the second tank body 17, the drive motor 21 is mounted at the bottom end of the second tank body 17, and the output end of the drive motor 21 is connected to the bottom end of the paddle 20;

[0029] like Figure 5 As shown, it also includes an exhaust hood 22, which is connected and arranged at the exhaust port of the desulfurization box 13;

[0030] like Figure 2 As shown, it also includes an activated carbon layer 23, which is arranged inside the exhaust hood 22;

[0031] In this embodiment, the flue gas discharged from the multiple groups of heat exchange tubes 4 flows upward through the multiple groups of bellows 8, and is filtered by the multiple groups of filter screens 7, so that the particulate matter and dirt in the flue gas are deposited at the bottom of the filter screen 7, and the filtered flue gas is discharged through the top of the first tank body 1. When the filter screen 7 needs to be cleaned, the support plate 6 is driven to vibrate up and down by turning on the vibration motor 11, so that the support plate 6 vibrates the multiple groups of filter screens 7, so that the dirt deposited at the bottom of the filter screen 7 falls downward, thereby improving the convenience of automatic cleaning of the multiple groups of filter screens 7. The flue gas discharged from the first tank body 1 is transported to the interior of the desulfurization box 13 through the transport pipe 12. The flue gas entering the desulfurization box 13 flows from bottom to top. At this time, the liquid containing the oxidant at the bottom of the desulfurization box 13 is extracted through the pump body 15. The extracted liquid is sprayed from top to bottom in the desulfurization box 13 through the water spray pipe 16, so that the liquid is in contact with the flue gas to desulfurize the flue gas. The flue gas is guided and transported through multiple groups of guide plates 14, which increases the flow distance of the flue gas, increases the contact time between the flue gas and the liquid, and improves the flue gas desulfurization effect.

[0032] The flue gas dust removal and desulfurization device for thermal power generation provided in the present embodiment conveys the flue gas to the inside of the conveying bucket 3 through the air intake device when working. The flue gas in the conveying bucket 3 is divided and flows upward through multiple groups of heat exchange tubes 4, and then passes through the filtering device to filter the particulate matter in the flue gas, and then passes through the desulfurization component to desulfurize the flue gas. Normal temperature water is circulated and transported in the first tank body 1 through the water valve 2. When the flue gas flows through the multiple groups of heat exchange tubes 4, the heat of the flue gas heats the multiple groups of heat exchange tubes 4, and the multiple groups of heat exchange tubes 4 heat the water in the first tank body 1.

[0033] The vibration motor 11, pump body 15 and drive motor 21 of the flue gas dust removal and desulfurization device for thermal power generation of the utility model are purchased on the market. The technicians in this industry only need to install and operate them according to the accompanying instruction manual, without the need for the technicians in this field to make creative labor.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A flue gas dust removal and desulfurization device for thermal power generation, comprising a first tank body (1) and a water valve (2), wherein the water valve (2) is arranged on the outer wall of the first tank body (1) in communication; characterized in that: It also includes an air intake device, a filtering device, a desulfurization component, a conveying bucket (3), a heat exchange tube (4) and a partition (5), wherein the conveying bucket (3) is installed at the bottom of the first tank body (1), the bottom end of the conveying bucket (3) is connected to the air intake device, the air intake device is used to convey the flue gas into the conveying bucket (3), a plurality of groups of heat exchange tubes (4) are connected and arranged at the top of the conveying bucket (3), the top ends of the plurality of groups of heat exchange tubes (4) are connected to the outer wall of the partition (5), the filtering device is arranged on the partition (5), the filtering device is used to filter the flue gas, the desulfurization component is connected to the inside of the first tank body (1), and the desulfurization component is used to desulfurize the flue gas.

2. A flue gas dust removal and desulfurization device for thermal power generation according to claim 1, characterized in that: The filtering device comprises a support plate (6), a filter screen (7), a bellows (8), a guide column (9), a spring (10) and a vibration motor (11); the plurality of filter screens (7) are mounted on the support plate (6); the bottom ends of the plurality of bellows (8) are mounted on the partition plate (5); the plurality of bellows (8) are respectively connected to the plurality of heat exchange tubes (4); the top ends of the plurality of bellows (8) are mounted on the support plate (6); the plurality of bellows (8) are respectively connected to the plurality of filter screens (7); the plurality of guide columns (9) are mounted on the top end of the partition plate (5); the support plate (6) is mounted on the plurality of guide columns (9) in an upward and downward sliding manner; the plurality of springs (10) are respectively fitted on the outer side walls of the plurality of guide columns (9); and the vibration motor (11) is mounted on the top end of the support plate (6).

3. A flue gas dust removal and desulfurization device for thermal power generation according to claim 1, characterized in that: The desulfurization assembly comprises a delivery pipe (12), a desulfurization box (13), a guide plate (14), a pump body (15) and a water spray pipe (16); the input end of the delivery pipe (12) is connected to the top of the first tank body (1); the output end of the delivery pipe (12) is connected to the lower part of the desulfurization box (13); an exhaust port is provided at the top of the desulfurization box (13); a plurality of groups of guide plates (14) are respectively installed on the inner wall of the desulfurization box (13) in a staggered manner; and the top surfaces of the plurality of groups of guide plates (14) are all arranged as inclined surfaces; the input end of the pump body (15) is connected to the desulfurization box (13); the water spray pipe (16) is connected to the output end of the pump body (15); and the output end of the water spray pipe (16) extends into the interior of the desulfurization box (13).

4. A flue gas dust removal and desulfurization device for thermal power generation according to claim 1, characterized in that: The air intake device comprises a second tank body (17), an air intake pipe (18) and a closed door (19); the second tank body (17) is arranged in communication with the bottom end of the conveying bucket (3); the air intake pipe (18) is arranged in communication with the outer side wall of the second tank body (17); and the closed door (19) is arranged in communication with the lower part of the outer side wall of the second tank body (17).

5. A flue gas dust removal and desulfurization device for thermal power generation according to claim 4, characterized in that: It also includes a paddle (20) and a drive motor (21), wherein the paddle (20) is rotatably mounted on the inner wall of the second tank body (17), the drive motor (21) is mounted on the bottom end of the second tank body (17), and the output end of the drive motor (21) is connected to the bottom end of the paddle (20).

6. A flue gas dust removal and desulfurization device for thermal power generation according to claim 2, characterized in that: It also includes an exhaust hood (22), which is arranged in communication with the exhaust port of the desulfurization box (13).

7. A flue gas dust removal and desulfurization device for thermal power generation according to claim 6, characterized in that: It also includes an activated carbon layer (23), which is arranged inside the exhaust hood (22).

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