White smoke elimination, dust removal and odor removal system
By setting up a combined system of preheater, lithium bromide unit and spray tower, and using hot water and cold water circulation system to carry out multi-stage cooling and spray treatment of flue gas, combined with burner whitening, the problems of high flue gas temperature and dust volume in traditional methods are solved, and significant cooling and deodorization effects are achieved.
Patent Information
- Application Number
- CN202520212933.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-11
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-02-11
AI Technical Summary
Traditional flue gas treatment methods cannot effectively reduce the temperature and dust content of high-temperature, high-humidity, and high-PM2.5 flue gas, resulting in high concentrations of white smoke and strong odors, which have a serious impact on the environment.
The system employs a combination of a preheater, lithium bromide unit, and spray tower. Through a hot water and cold water circulation system, the flue gas undergoes multi-stage cooling and spraying treatment. Combined with burner whitening, this achieves multi-stage cooling, dust removal, and odor elimination.
It significantly reduces flue gas temperature and dust levels, decreases white smoke concentration, and improves environmental impact.
Smart Images
Figure CN223915029U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of environmental protection equipment technology, and in particular to a flue gas whitening, dust removal, and odor removal system. Background Technology
[0002] The high-temperature, high-humidity, and high-PM2.5 flue gas generated by natural gas boilers after drying animal and plant products will have a significant impact on the surrounding environment if it is directly released into the atmosphere.
[0003] The traditional approach is to first send the flue gas generated after boiler drying into a cyclone dust collector for dust removal, and then into a spray tower for water cooling and dust removal. However, the effect is not ideal. When the high-temperature flue gas comes into contact with the spray water, the moisture in the flue gas will evaporate rapidly due to the relatively low water temperature. This may lead to a decrease in the cooling and dust removal effect of the spray tower, resulting in a large amount of dust in the emitted flue gas, and the flue gas temperature is high, producing thick white smoke and a strong odor, which has a significant impact on the surrounding environment.
[0004] Therefore, those skilled in the art have provided a flue gas whitening, dust removal, and odor removal system to solve the problems mentioned in the background art. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a flue gas whitening, dust removal, and odor removal system, which solves the problems mentioned in the background section.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A flue gas deodorization, dust removal, and deodorization system includes a preheater heat exchanger, with a flue gas inlet pipe at one end and a flue gas outlet pipe at the other end. A water inlet pipe and a water outlet pipe are located on the side of the preheater heat exchanger. The flue gas inlet pipe connects to the outlet of a cyclone dust collector. A primary spray tower is located on one side of the preheater heat exchanger, and a primary induced draft fan is located between the preheater heat exchanger and the primary spray tower. A secondary spray tower is located on one side of the primary spray tower. A lithium bromide generator and a lithium bromide generator cooling tower are also located on one side of the preheater heat exchanger. A hot water circulation system for cooling the flue gas is located between the lithium bromide generator and the preheater heat exchanger. A cold water circulation system for secondary cooling of the flue gas is located between the lithium bromide generator and the secondary spray tower. A second flue gas outlet is located at the top of the secondary spray tower, and a burner is located on the inner wall of the second flue gas outlet. The burner can burn and deodorize the flue gas.
[0008] According to the flue gas whitening, dust removal and odor removal system, the top of the primary spray tower is provided with a first flue gas side outlet, the bottom of the primary spray tower is provided with a first water outlet pipe, the two sides of the primary spray tower are respectively provided with a first flue gas side inlet and a first water inlet pipe, a primary induced draft fan is provided between the first flue gas side inlet and the flue gas outlet pipe, and a spraying device is provided inside the primary spray tower cavity.
[0009] According to the flue gas whitening, dust removal and odor removal system, the bottom of the secondary spray tower is provided with a second water outlet pipe, the outer wall of the secondary spray tower is provided with a second flue gas side inlet and a second water inlet pipe, and a spraying device is provided inside the secondary spray tower cavity.
[0010] According to the flue gas whitening, dust removal, and odor removal system, the lithium bromide unit includes a hot water side inlet, a hot water side outlet, a cold water side inlet, a cold water side outlet, a cooling side inlet, and a cooling side outlet. The hot water side inlet is connected to the outlet pipe via a water pipe, and the hot water side outlet is connected to the inlet pipe via a water pipe, with a hot water pump installed on the water pipe.
[0011] According to the flue gas whitening, dust removal, and odor removal system, the water inlet of the lithium bromide unit cooling tower is fixedly connected to the cooling side outlet via a water pipe, and the water outlet of the lithium bromide unit cooling tower is fixedly connected to the cooling side inlet via a water pipe, with a lithium bromide cooling water pump installed on the water pipe.
[0012] According to the flue gas whitening, dust removal, and odor removal system, the cold water side outlet and the second water inlet pipe are connected by a water pipe, and the cold water side inlet and the second water outlet pipe are connected by a water pipe with a cold water pump installed on the water pipe.
[0013] According to the flue gas whitening, dust removal, and odor removal system, a spray cooling tower is also provided on one side of the primary spray tower. A settling tank is provided below the primary spray tower. The settling tank is connected to the water inlet of the spray cooling tower through a water pipe, and a water supply pump for the spray cooling tower is provided on the water pipe. The water outlet of the spray cooling tower is fixedly connected to the first water inlet pipe through a water pipe, and a spray pump is provided on the water pipe.
[0014] According to the flue gas whitening, dust removal, and odor removal system, the first flue gas outlet and the second flue gas inlet are connected by a flue gas pipe, and a secondary induced draft fan is installed between the first flue gas outlet and the second flue gas inlet.
[0015] This invention provides a flue gas deodorization, dust removal, and odor elimination system. It has the following beneficial effects:
[0016] (1) This application sets up a lithium bromide unit and a lithium bromide unit cooling tower. After the hot water passes through the preheater, it cools the flue gas in the preheater. At the same time, the hot water absorbs the heat of the flue gas and drives the lithium bromide unit to work. The cold water produced by the lithium bromide unit enters the secondary spray tower to cool the flue gas a second time. Compared with the electric chiller, the driving force of the lithium bromide unit is hot water, and the power consumption is very small. A burner is set on the inner wall of the second flue gas side outlet. The burner can heat the flue gas, and the whitening effect is particularly obvious.
[0017] (2) By setting up a primary spray tower and a secondary spray tower, the flue gas can be sprayed in two stages in sequence. The settling tank and the water inlet of the spray cooling tower are connected by a water pipe and a water supply pump for the spray cooling tower is installed on the water pipe. The water outlet of the spray cooling tower is fixedly connected to the first water inlet pipe through a water pipe and a spray pump is installed on the water pipe. The spray pump inputs cold water into the spray device. The spray device works to reduce the temperature of the flue gas and has a significant deodorization effect.
[0018] (3) By setting up a lithium bromide unit, the hot water inlet is connected to the outlet pipe on the side of the preheater by a water pipe, the hot water outlet is connected to the inlet pipe on the side of the preheater by a water pipe, and a hot water pump is installed on the water pipe. The hot water undergoes heat exchange through the preheater, and the cooling water enters the cooling tower of the lithium bromide unit through the cooling outlet. The temperature of the cooling water decreases under the action of the cooling tower of the lithium bromide unit. The cold water outlet is connected to the second water inlet pipe by a water pipe, and the cold water inlet is connected to the second water outlet pipe by a water pipe, and a cold water pump is installed on the water pipe. The cold water flows out from the cold water outlet and is sent to the spray device in the secondary spray tower cavity through the second water inlet pipe to cool the flue gas for a second time. By setting a burner on the inner wall of the second flue gas outlet, the burner can eliminate white smoke from the flue gas. At this time, the discharged flue gas has no white smoke or the white smoke concentration is very low, the dust amount is very small, and the odor is very small. Attached Figure Description
[0019] Figure 1 This is a schematic diagram illustrating the operating principle of a flue gas deodorization, dust removal, and odor elimination system according to this utility model.
[0020] Legend:
[0021] 10. Preheater; 101. Flue gas inlet pipe; 102. Flue gas outlet pipe; 103. Water inlet pipe; 104. Water outlet pipe; 20. Primary induced draft fan; 30. Primary spray tower; 301. First flue gas side inlet; 302. First flue gas side outlet; 303. First water inlet pipe; 304. First water outlet pipe; 40. Secondary induced draft fan; 50. Secondary spray tower; 501. Second flue gas side inlet; 502. Second flue gas side outlet; 503. Second water inlet Pipe; 504, Second water outlet pipe; 60, Burner; 70, Lithium bromide unit; 701, Hot water side inlet; 702, Hot water side outlet; 703, Cold water side inlet; 704, Cold water side outlet; 705, Cooling side inlet; 706, Cooling side outlet; 80, Lithium bromide unit cooling tower; 90, Spray cooling tower; 11, Hot water pump; 12, Cold water pump; 13, Spray cooling tower water supply pump; 14, Spray pump; 15, Settling tank; 16, Lithium bromide cooling water pump. Detailed Implementation
[0022] like Figure 1 As shown: A flue gas deodorization, dust removal, and deodorization system includes a preheater 10, with a flue gas inlet pipe 101 at one end and a flue gas outlet pipe 102 at the other end. A water inlet pipe 103 and a water outlet pipe 104 are located on the side of the preheater 10. The flue gas inlet pipe 101 connects to the outlet of a cyclone dust collector. A primary spray tower 30 is located on one side of the preheater 10, and a primary induced draft fan 20 is located between the preheater 10 and the primary spray tower 30. A primary spray tower 30 is located on one side of the primary spray tower 30. The system includes a secondary spray tower 50, and a lithium bromide unit 70 and a lithium bromide unit cooling tower 80 are also installed on one side of the preheater 10. A hot water circulation system for cooling the flue gas is installed between the lithium bromide unit 70 and the preheater 10. A cold water circulation system for secondary cooling of the flue gas is installed between the lithium bromide unit 70 and the secondary spray tower 50. A second flue gas outlet 502 is installed at the top of the secondary spray tower 50. A burner 60 is installed on the inner wall of the second flue gas outlet 502. The burner 60 can heat and eliminate whitening of the flue gas.
[0023] It is worth noting that the first-stage spray tower 30 is existing technology and will not be elaborated upon here.
[0024] Specifically, this application sets up a lithium bromide generator unit 70 and a lithium bromide generator cooling tower 80. After hot water passes through the preheater 10, it cools the flue gas in the preheater 10. At the same time, the hot water absorbs the heat of the flue gas and drives the lithium bromide generator unit 70 to work. The cold water produced by the lithium bromide generator unit 70 enters the secondary spray tower 50 to cool the flue gas a second time. Compared with electric chillers, the lithium bromide generator unit 70 is driven by hot water, and the power consumption is extremely small. A burner 60 is set on the inner wall of the second flue gas side outlet 502. The burner 60 can heat the flue gas, and the whitening effect is particularly obvious.
[0025] The first-stage spray tower 30 has a first flue gas outlet 302 at its top and a first water outlet pipe 304 at its bottom. A first flue gas inlet 301 and a first water inlet pipe 303 are respectively located on both sides of the first-stage spray tower 30. A first-stage induced draft fan 20 is installed between the first flue gas inlet 301 and the flue gas outlet pipe 102. A spraying device is installed inside the cavity of the first-stage spray tower 30. The second-stage spray tower 50 has a second water outlet pipe 504 at its bottom and a second flue gas inlet 501 and a second water inlet pipe 503 are located on its outer wall. A spraying device is installed inside the cavity of the second-stage spray tower 50. A spray cooling tower 90 is also provided on one side of the primary spray tower 30. A settling tank 15 is provided below the primary spray tower 30. The settling tank 15 is connected to the water inlet of the spray cooling tower 90 through a water pipe and a spray cooling tower water supply pump 13 is provided on the water pipe. The water outlet of the spray cooling tower 90 is fixedly connected to the first water inlet pipe 303 through a water pipe and a spray pump 14 is provided on the water pipe.
[0026] Specifically, by setting up a primary spray tower 30 and a secondary spray tower 50, the flue gas can be sprayed in two stages. The settling tank 15 is connected to the water inlet of the spray cooling tower 90 through a water pipe, and a water supply pump 13 for the spray cooling tower is installed on the water pipe. The water outlet of the spray cooling tower 90 is fixedly connected to the first water inlet pipe 303 through a water pipe, and a spray pump 14 is installed on the water pipe. The spray pump 14 inputs cold water into the spray device. The operation of the spray device reduces the temperature of the flue gas and has a significant deodorization effect.
[0027] The lithium bromide unit 70 includes a hot water inlet 701, a hot water outlet 702, a cold water inlet 703, a cold water outlet 704, a cooling water inlet 705, and a cooling water outlet 706. The hot water inlet 701 is connected to the outlet pipe 104 via a water pipe, and the hot water outlet 702 is connected to the inlet pipe 103 via a water pipe, with a hot water pump 11 installed on the water pipe. The inlet end of the lithium bromide unit cooling tower 80 is fixedly connected to the cooling water outlet 706 via a water pipe, and the outlet end of the lithium bromide unit cooling tower 80 is fixedly connected to the cooling water inlet 705 via a water pipe, with a lithium bromide cooling water pump 16 installed on the water pipe. The cold water outlet 704 is connected to the second water inlet pipe 503 via a through water pipe, and the cold water inlet 703 is connected to the second water outlet pipe 504 via a through water pipe, with a cold water pump 12 installed on the water pipe.
[0028] It should be noted that: the lithium bromide unit 70 is connected to the preheater 10 and circulates hot water, with a water temperature of about 75-95℃; the lithium bromide unit 70 is connected to the secondary spray tower 50 and circulates cold water, with a water temperature of about 18-28℃; the lithium bromide unit 70 is connected to the lithium bromide unit cooling tower 80 and circulates cooling water, with a water temperature of about 30-35℃.
[0029] Specifically, by setting up a lithium bromide unit 70, the hot water inlet 701 is connected to the outlet pipe 104 on one side of the preheater 10 via a water pipe, and the hot water outlet 702 is connected to the inlet pipe 103 on one side of the preheater 10 via a water pipe, with a hot water pump 11 installed on the water pipe. The hot water undergoes heat exchange through the preheater 10, and the cooling water enters the lithium bromide unit cooling tower 80 through the cooling side outlet 706. The temperature of the cooling water decreases under the action of the lithium bromide unit cooling tower 80, and the cold water outlet 704 is connected to the second water inlet. The pipes 503 are connected by a water pipe. The cold water inlet 703 and the second water outlet pipe 504 are connected by a water pipe and a cold water pump 12 is installed on the water pipe. The cold water flows out from the cold water outlet 704 and is sent to the spray device in the secondary spray tower 50 through the second water inlet pipe 503 to cool the flue gas. A burner 60 is installed on the inner wall of the second flue gas outlet 502. The burner 60 can eliminate white smoke in the flue gas. At this time, there is no white smoke or the white smoke concentration is very low, the amount of dust is very small, and the odor is very small.
[0030] The first flue gas outlet 302 and the second flue gas inlet 501 are connected by a flue gas pipe, and a secondary induced draft fan 40 is installed between the first flue gas outlet 302 and the second flue gas inlet 501.
[0031] Specifically, a flue gas pipe is used to connect the first flue gas outlet 302 and the second flue gas inlet 501. A secondary induced draft fan 40 is installed between the first flue gas outlet 302 and the second flue gas inlet 501. The secondary induced draft fan 40 inputs the flue gas in the primary spray tower 30 into the cavity of the secondary spray tower 50.
[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A flue gas deodorization, dust removal, and odor removal system, comprising a preheater (10), a flue gas inlet pipe (101) at one end of the preheater (10), a flue gas outlet pipe (102) at the other end of the preheater (10), a water inlet pipe (103) and a water outlet pipe (104) on the side of the preheater (10), and the flue gas inlet pipe (101) being connected to the outlet of a cyclone dust collector, characterized in that: A primary spray tower (30) is provided on one side of the preheater (10), a primary induced draft fan (20) is provided between the preheater (10) and the primary spray tower (30), a secondary spray tower (50) is provided on one side of the primary spray tower (30), a lithium bromide unit (70) and a lithium bromide unit cooling tower (80) are also provided on one side of the preheater (10), a hot water circulation system for cooling the flue gas is provided between the lithium bromide unit (70) and the preheater (10), a cold water circulation system for secondary cooling of the flue gas is provided between the lithium bromide unit (70) and the secondary spray tower (50), a second flue gas side outlet (502) is provided at the top of the secondary spray tower (50), a burner (60) is provided on the inner wall of the second flue gas side outlet (502), and the burner (60) can heat and eliminate whitening of the flue gas.
2. The flue gas deodorization, dust removal, and odor elimination system according to claim 1, characterized in that: The first-stage spray tower (30) is provided with a first flue gas side outlet (302) at the top and a first water outlet pipe (304) at the bottom. The first-stage spray tower (30) is provided with a first flue gas side inlet (301) and a first water inlet pipe (303) on both sides respectively. A first-stage induced draft fan (20) is provided between the first flue gas side inlet (301) and the flue gas outlet pipe (102). A spraying device is provided inside the cavity of the first-stage spray tower (30).
3. The flue gas deodorization, dust removal, and odor elimination system according to claim 1, characterized in that: The bottom end of the secondary spray tower (50) is provided with a second water outlet pipe (504), the outer wall of the secondary spray tower (50) is provided with a second flue gas side inlet (501) and a second water inlet pipe (503), and a spraying device is provided inside the cavity of the secondary spray tower (50).
4. The flue gas deodorization, dust removal, and odor elimination system according to claim 1, characterized in that: The lithium bromide unit (70) includes a hot water inlet (701), a hot water outlet (702), a cold water inlet (703), a cold water outlet (704), a cooling inlet (705), and a cooling outlet (706). The hot water inlet (701) is connected to the outlet pipe (104) by a water pipe, and the hot water outlet (702) is connected to the inlet pipe (103) by a water pipe, and a hot water pump (11) is installed on the water pipe.
5. The flue gas deodorization, dust removal, and odor elimination system according to claim 1, characterized in that: The inlet end of the lithium bromide unit cooling tower (80) is fixedly connected to the cooling side outlet (706) by a water pipe, and the outlet end of the lithium bromide unit cooling tower (80) is fixedly connected to the cooling side inlet (705) by a water pipe, and a lithium bromide cooling water pump (16) is installed on the water pipe.
6. The flue gas deodorization, dust removal, and odor elimination system according to claim 4, characterized in that: The cold water outlet (704) and the second water inlet pipe (503) are connected by a water pipe, and the cold water inlet (703) and the second water outlet pipe (504) are connected by a water pipe and a cold water pump (12) is installed on the water pipe.
7. The flue gas deodorization, dust removal, and odor elimination system according to claim 1, characterized in that: A spray cooling tower (90) is also provided on one side of the primary spray tower (30). A settling tank (15) is provided below the primary spray tower (30). The settling tank (15) and the water inlet of the spray cooling tower (90) are connected by a water pipe and a spray cooling tower water supply pump (13) is provided on the water pipe. The water outlet of the spray cooling tower (90) is fixedly connected to the first water inlet pipe (303) through a water pipe and a spray pump (14) is provided on the water pipe.
8. The flue gas deodorization, dust removal, and odor elimination system according to claim 2, characterized in that: The first flue gas outlet (302) and the second flue gas inlet (501) are connected by a flue gas pipe, and a secondary induced draft fan (40) is provided between the first flue gas outlet (302) and the second flue gas inlet (501).