Connecting structure shared by chimney and desulfurizing tower

Abstract

The invention relates to the technical field of flue gas desulfurization, in particular to a chimney and desulfurization tower shared connecting structure which comprises a chimney and a desulfurization tower, a guide structure is arranged outside the desulfurization tower, the output end of the guide structure is arranged in the chimney, a separator matched with the guide structure is fixedly arranged in the desulfurization tower, and the output end of the guide structure is arranged in the chimney. A waste heat recovery structure is arranged in the guide structure, and a filtering structure is arranged in the guide structure; the multiple guiding structures are connected with the desulfurizing towers correspondingly, the desulfurizing towers communicate with the guiding structures through the gas guiding pipes, the waste heat recycling structures are arranged to adsorb heat in exhausted waste gas, water in the waste heat recycling structures is heated, the temperature of the waste gas is reduced, the heated water can be recycled into the power generation device, and the power generation efficiency is improved. The energy consumed by the power generation device is reduced, residual particulate matters in the flue gas are filtered by arranging the filtering structure, and the pollution of the flue gas to the environment is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of flue gas desulfurization, and in particular to a common connection structure of a chimney and a desulfurization tower. Background Art

[0002] Thermal power generation is one of the main ways of producing electricity, which mainly generates electricity by burning fossil fuels such as coal, oil, and natural gas. However, in the process of thermal power generation, the combustion of fossil fuels will produce a large amount of exhaust gas, which contains a large amount of sulfur oxides, causing serious pollution to the environment. Sulfur pollution is mainly manifested in environmental problems such as acid rain and haze, which cause great damage to the ecological environment, human health and buildings. At present, in order to deal with sulfur pollution in thermal power generation exhaust gas, a desulfurization tower is generally used to remove sulfides in the exhaust gas.

[0003] Existing boiler exhaust must be purified before it can be discharged through the chimney, including desulfurization, denitrification, etc. Since coal contains sulfur, the flue gas generated after the coal is burned in the boiler must contain SO2, which must be removed before it can be discharged into the atmosphere. For example, Chinese patent announcement No. CN108343981A discloses a "desulfurization tower and chimney integrated device", which uses a structural conversion layer for transition. The exhaust pipes of one or more desulfurization towers inside the chimney extend upward along the chimney respectively, or merge and extend upward along the chimney. The chimney expansion part is a cylindrical structure or a herringbone column structure at the bottom, and the clean flue at the outlet of the desulfurization tower is omitted, the cost of the clean flue and the bracket is reduced, and the flue gas resistance is reduced, the power consumption of the flue gas is saved, and the area behind the furnace is optimized;

[0004] However, in actual use, the heat contained in the emitted flue gas will not only cause waste, but also produce various pollution. For example, it will cause the urban heat island effect, that is, the temperature in the city center is higher than the surrounding suburbs, which will lead to higher energy consumption (such as increased use of air conditioning), heat-related health problems and pressure on urban ecosystems. Heat emissions will cause the air temperature to rise, intensify the formation and diffusion of air pollutants, and cause the evaporation rate of water bodies to accelerate, affecting the distribution and availability of water resources. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art that flue gas contains heat causing waste and generating various pollutions, and to propose a common connection structure for a chimney and a desulfurization tower.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A chimney and a desulfurization tower common connection structure is designed, comprising a chimney and a desulfurization tower, wherein a guide structure is arranged outside the desulfurization tower, an output end of the guide structure is arranged inside the chimney, an isolator matched with the guide structure is fixedly arranged inside the desulfurization tower, a waste heat recovery structure is arranged inside the guide structure, and a filtering structure is arranged inside the guide structure;

[0008] There are multiple guide structures and desulfurization towers, and each of the multiple guide structures is connected to a desulfurization tower. The desulfurization tower is connected to the guide structure through an air guide pipe.

[0009] Furthermore, the guiding structure includes a protective cover and a guiding portion, and the waste heat recovery structure and the filtering structure are both arranged in the protective cover.

[0010] Furthermore, the waste heat recovery structure includes an annular tube, and a water inlet pipe and a water outlet pipe are provided on the annular tube.

[0011] Furthermore, the annular tube is a multi-layer structure, and a plurality of heat-conducting parts are fixedly arranged on the annular tube.

[0012] Furthermore, a mounting plate is fixedly provided on the protective cover, a protrusion matching with the annular tube is fixedly provided on the mounting plate, and gaps are provided between the multiple layers of the annular tube.

[0013] Furthermore, the filtering structure includes a filter screen, and a support ring matched with the filter screen is fixedly arranged in the protective cover, and the support ring is fixedly connected to the filter screen.

[0014] Furthermore, a brush is rotatably arranged on the filter screen, the bristles of the brush are in contact with the filter screen, and a power structure cooperating with the brush is arranged on the mounting plate.

[0015] Furthermore, the power structure includes a motor fixedly connected to the mounting plate, an output end of the motor is fixedly connected to a rotating shaft, and the rotating shaft is fixedly connected to the brush.

[0016] Furthermore, a wastewater pool is provided at the bottom of the chimney, a water guide pipe and a waste discharge pipe are fixedly provided on the wastewater pool, and the lower end of the guide structure is connected to the wastewater pool.

[0017] Furthermore, one ends of the plurality of heat-conducting members are fixedly connected to the annular tube, and the other ends of the plurality of heat-conducting members are connected to each other, and a circular hole is provided at the connection, and the rotating shaft passes through the circular hole.

[0018] The invention proposes a chimney and a desulfurization tower shared connection structure, which has the following beneficial effects:

[0019] In the present invention, a waste heat recovery structure is provided to absorb the heat in the exhaust gas, and the water in the waste heat recovery device is heated, which not only reduces the temperature of the exhaust gas, but also can recover the heated water to the power generation device, thereby reducing the energy consumption of the power generation device;

[0020] Secondly, in the present invention, a filtering structure is provided to filter the remaining particulate matter in the smoke, thereby reducing the pollution of the smoke to the environment, and a wastewater pool is provided to adsorb and collect the particulate matter, and the wastewater is discharged for unified treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of a chimney and a desulfurization tower common connection structure proposed by the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the protective cover of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the wastewater tank of the present invention;

[0024] Figure 4 It is a schematic diagram of the enlarged structure of the A area of ​​the present invention;

[0025] Figure 5 It is a schematic structural diagram of the annular tube of the present invention.

[0026] In the figure: 1. chimney; 2. desulfurization tower; 3. guide structure; 31. protective cover; 32. guide part; 4. isolation part; 5. waste heat recovery structure; 51. annular pipe; 52. water inlet pipe; 53. water outlet pipe; 54. heat conducting part; 55. mounting plate; 56. raised part; 6. filtering structure; 61. filter net; 62. support ring; 63. brush; 64. power structure; 641. motor; 642. rotating shaft; 7. air guide pipe; 8. wastewater tank; 81. water guide pipe; 82. waste discharge pipe. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] Reference Figure 1-5 A chimney and a desulfurization tower shared connection structure, comprising a chimney 1 and a desulfurization tower 2, a guide structure 3 is arranged outside the desulfurization tower 2, an output end of the guide structure 3 is arranged in the chimney 1, an isolation member 4 matched with the guide structure 3 is fixedly arranged in the desulfurization tower 2, a waste heat recovery structure 5 is arranged in the guide structure 3, and a filtering structure 6 is arranged in the guide structure 3;

[0029] There are multiple guide structures 3 and multiple desulfurization towers. The multiple guide structures 3 are respectively connected to a desulfurization tower 2 , and the desulfurization tower 2 is connected to the guide structure 3 through the air guide pipe 7 .

[0030] In the present invention, a waste heat recovery structure 5 is provided to absorb heat in the exhaust gas and heat the water in the waste heat recovery structure 5, which not only reduces the temperature of the exhaust gas but also allows the heated water to be recovered to the power generation device, thereby reducing the energy consumed by the power generation device. A filter structure 6 is provided to filter the remaining particulate matter in the flue gas and reduce the pollution of the flue gas to the environment.

[0031] Furthermore, in this embodiment, the guide structure 3 includes a protective cover 31 and a guide portion 32, and the waste heat recovery structure 5 and the filtering structure 6 are both arranged in the protective cover 31. By cooperating with the protective cover and the guide portion 32, the smoke is guided into the chimney 1. In some embodiments, an exhaust fan is provided in the chimney to discharge the smoke along the chimney 1.

[0032] In this embodiment, the waste heat recovery structure 5 includes an annular tube 51, on which a water inlet pipe 52 and a water outlet pipe 53 are provided. The annular tube 51 has a larger contact area with the flue gas than an ordinary pipe, thereby improving the heating effect of the water in the pipe. The heated water is collected in the power generation device, reducing the energy required by the power generation device to heat the water and saving the power generation cost.

[0033] Furthermore, in the present embodiment, the annular tube 51 is a multi-layer structure, and a plurality of heat-conducting parts 54 are fixedly provided on the annular tube 51. The multi-layer annular tube 51 can further increase the contact area with the flue gas and increase the effect of heat adsorption; effectively reduce the temperature of the flue gas, and heat the water in the pipeline to a higher temperature, while increasing the output of heated water.

[0034] In this embodiment, a mounting plate 55 is fixedly provided on the protective cover 31, and a protrusion 56 matching the annular tube 51 is fixedly provided on the mounting plate 55. The protrusion 56 is inserted into the multi-layer annular tube to prevent the smoke from being directly discharged along the central part of the multi-layer annular tube, increase the path for the smoke to be discharged, thereby improving the heating efficiency of the annular tube 51, and gaps are provided between the multi-layer annular tubes 51.

[0035] It should be noted that, in this embodiment, the filtering structure 6 includes a filter screen 61, and a support ring 62 that cooperates with the filter screen 61 is fixedly arranged in the protective cover 31. The support ring 62 is fixedly connected to the filter screen 61. The remaining particulate matter in the smoke is filtered through the filter screen 61 to reduce the pollution of the smoke to the environment.

[0036] In this embodiment, a brush 63 is rotatably provided on the filter 61, and the bristles of the brush 63 are in contact with the filter 61. A power structure 64 that cooperates with the brush 63 is provided on the mounting plate 55. The power structure 64 drives the brush 63 to rotate to clean the filter 61 to prevent the filter 61 from being blocked.

[0037] In addition, in this embodiment, the power structure 64 includes a motor 641 fixedly connected to the mounting plate 55, and the output end of the motor 641 is fixedly connected to a rotating shaft 642, and the rotating shaft 642 is fixedly connected to the brush 63. The rotating shaft 642 is driven to rotate by the motor 641, driving the brush 63 to rotate, and the rotating shaft 642 is rotatably connected to the filter 61 through a bearing.

[0038] In detail, in this embodiment, a wastewater pool 8 is provided at the bottom of the chimney 1, and a water pipe 81 and a waste discharge pipe 82 are fixedly provided on the wastewater pool 8. The lower end of the guide structure 3 is connected to the wastewater pool 8. The wastewater adsorbing particulate matter can be discharged by providing the waste discharge pipe 82, and new water can be injected through the water pipe 81.

[0039] In more detail, in some embodiments, one ends of the multiple heat-conducting members 54 are fixedly connected to the annular tube 51, and the other ends of the multiple heat-conducting members 54 are connected to each other, and a circular hole is provided at the connection, and the rotating shaft 642 passes through the circular hole. The inner diameter of the circular hole is larger than the outer periphery of the rotating shaft 642, so that the circular hole is not connected to the rotating shaft 642.

[0040] Working mode: When working, the heat in the exhaust gas is absorbed by the annular tube 51 in the waste heat recovery structure 5, and the multi-layer annular tube 51 can further increase the contact area with the flue gas, thereby increasing the effect of heat absorption; effectively reducing the temperature of the flue gas, filtering the remaining particulate matter in the flue gas through the filter 61, reducing the pollution of the flue gas to the environment, and driving the rotating shaft 642 to rotate through the motor 641, driving the brush 63 to rotate to clean the filter 61 to prevent the filter 61 from being blocked.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A chimney and desulfurization tower common connection structure, comprising a chimney (1) and a desulfurization tower (2), characterized in that: A guide structure (3) is arranged outside the desulfurization tower (2), an output end of the guide structure (3) is arranged in the chimney (1), a partition (4) matched with the guide structure (3) is fixedly arranged in the desulfurization tower (2), a waste heat recovery structure (5) is arranged in the guide structure (3), and a filtering structure (6) is arranged in the guide structure (3); There are multiple guide structures (3) and multiple desulfurization towers. The multiple guide structures (3) are respectively connected to a desulfurization tower (2). The desulfurization tower (2) is connected to the guide structure (3) via an air guide pipe (7).

2. The chimney and desulfurization tower common connection structure according to claim 1 is characterized in that: The guide structure (3) comprises a protective cover (31) and a guide portion (32), and the waste heat recovery structure (5) and the filtering structure (6) are both arranged in the protective cover (31).

3. The chimney and desulfurization tower common connection structure according to claim 2 is characterized in that: The waste heat recovery structure (5) comprises an annular tube (51), and a water inlet pipe (52) and a water outlet pipe (53) are arranged on the annular tube (51).

4. The chimney and desulfurization tower common connection structure according to claim 3 is characterized in that: The annular tube (51) is a multi-layer structure, and a plurality of heat-conducting components (54) are fixedly arranged on the annular tube (51).

5. The chimney and desulfurization tower common connection structure according to claim 4 is characterized in that: A mounting plate (55) is fixedly arranged on the protective cover (31), a protrusion (56) matching with the annular tube (51) is fixedly arranged on the mounting plate (55), and gaps are arranged between the multiple layers of the annular tube (51).

6. A chimney and desulfurization tower common connection structure according to claim 5, characterized in that: The filtering structure (6) comprises a filtering net (61), and a supporting ring (62) matching with the filtering net (61) is fixedly arranged in the protective cover (31), and the supporting ring (62) is fixedly connected to the filtering net (61).

7. A chimney and desulfurization tower common connection structure according to claim 6, characterized in that: A brush (63) is rotatably arranged on the filter screen (61), the bristles of the brush (63) are in contact with the filter screen (61), and a power structure (64) matching with the brush (63) is arranged on the mounting plate (55).

8. The chimney and desulfurization tower common connection structure according to claim 7 is characterized in that: The power structure (64) comprises a motor (641) fixedly connected to the mounting plate (55); an output end of the motor (641) is fixedly connected to a rotating shaft (642); and the rotating shaft (642) is fixedly connected to the brush (63).

9. The chimney and desulfurization tower common connection structure according to claim 1, characterized in that: A wastewater pool (8) is provided at the bottom of the chimney (1), a water guide pipe (81) and a waste discharge pipe (82) are fixedly arranged on the wastewater pool (8), and the lower end of the guide structure (3) is connected to the wastewater pool (8).

10. The chimney and desulfurization tower common connection structure according to claim 8, characterized in that: One end of each of the plurality of heat-conducting members (54) is fixedly connected to the annular tube (51), and the other ends of the plurality of heat-conducting members (54) are connected to each other, and a circular hole is provided at the connection, and the rotating shaft (642) passes through the circular hole.

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