Desulfurization, dust removal and waste heat recovery integrated equipment

Abstract

The utility model discloses desulfurization, dust removal and waste heat recovery integrated equipment, and relates to the technical field of waste gas treatment equipment. According to the desulfurization, dust removal and waste heat recovery integrated equipment, by arranging the treatment tower, the spraying desulfurization assembly, the heat exchange assembly, the dust removal filter screen and the like, when flue gas enters the treatment tower, spraying treatment is conducted through the spraying separation assembly, spraying reducing agent liquid makes contact with the flue gas, desulfurization of the flue gas is achieved, heat exchange is achieved between the liquid and the flue gas while the liquid is adsorbed, and the heat exchange efficiency is improved. The heated liquid falls down to the bottom of the treatment tower to be settled, the heat exchange plate is used for heat exchange of the liquid, waste heat recovery is achieved, meanwhile, after the flue gas is subjected to spraying treatment, the heat exchange assembly makes contact with the flue gas, residual heat in the flue gas is recovered, the waste heat recovery effect is guaranteed, and finally the flue gas is discharged after being filtered through the dust removal filter screen. The whole equipment realizes the integration of desulfurization, dust removal and waste heat recovery, and the practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment equipment, in particular to an integrated desulfurization, dust removal and waste heat recovery equipment. Background Art

[0002] In the environmental protection industry, flue gas emissions need to meet national standards, while traditional desulfurization, denitrification, and dust removal equipment and their supporting systems mainly include: dust removal equipment and systems, desulfurization equipment and systems, denitrification equipment and systems, large chimneys, etc., which have the characteristics of large equipment, complex systems, unreasonable design of desulfurization and denitrification towers, and easy scaling and clogging.

[0003] For example, publication number CN2735277Y discloses a waste heat recovery desulfurization and dust removal device with integrated main and auxiliary towers. The utility model designs the auxiliary tower inside the main tower, and has a waste heat recovery device at the inlet of the main tower, which can return the recovered heat energy to the boiler. A heat pump waste heat recovery device is installed in the water treatment pool, which can use the waste water heat to return to the boiler or provide heating. The utility model can increase the boiler efficiency by 10-20%, reduce the floor space by 50%, save 30% of materials, and increase the dust removal capacity by 50%. The dust removal efficiency reaches 99%.

[0004] The desulfurization rate reaches 95%;

[0005] The integrated desulfurization, dust removal and waste heat recovery equipment in this patent is generally composed of multiple devices. The flue gas needs to pass through the waste heat recovery device for heat exchange, the desulfurization device for desulfurization, and finally the dust removal equipment for dust removal. Different devices need to be connected by pipelines, resulting in a large footprint for the overall equipment and the inability to be integrated. At the same time, the large number of pipelines makes maintenance very inconvenient and has low practicality. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the utility model provides an integrated desulfurization, dust removal and waste heat recovery equipment, which solves the problem that different equipment need to be connected by pipelines, resulting in the overall equipment occupying a large area and being unable to be integrated. At the same time, the large number of pipelines makes maintenance very inconvenient and the practicality is low.

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: an integrated desulfurization, dust removal and waste heat recovery equipment, including a treatment tower, the lower end of the treatment tower is fixedly connected to a support frame, the left end of the surface of the treatment tower is provided with an air inlet pipe, the upper end of the treatment tower is provided with an air outlet pipe, the inner side of the treatment tower is provided with a spray desulfurization component, the bottom of the inner side of the treatment tower is provided with a heat exchange plate, the lower end of the treatment tower is fixedly installed with a sewage pipe, the upper end of the inner side of the treatment tower is installed with a heat exchange component, the inner side of the treatment tower is provided with a diverter baffle above the heat exchange component, and the side of the upper end of the diverter baffle is provided with a dust removal filter.

[0008] Preferably, two spray desulfurization components are provided, and the spray desulfurization components include a diversion pipe, and three diversion pipes are evenly spaced. The three diversion pipes are fixedly connected to the treatment tower, and a liquid delivery pipe is provided on the outer side of the surface of the treatment tower. The diversion pipe and the liquid delivery pipe are connected through a pipeline, and a spray head is provided on the lower end face of the diversion pipe, and the spray heads are evenly spaced.

[0009] Preferably, heat exchange tubes are fixedly installed at both upper and lower ends of the heat exchange plate, the heat exchange tubes are distributed at equal intervals, the heat exchange plate is designed as a hollow structure, circulation joints are provided on both sides of the front end of the heat exchange plate, and the height of the heat exchange plate is adapted to the air intake pipe.

[0010] Preferably, the heat exchange assembly includes a lower baffle and an upper baffle, the lower end face of the lower baffle is designed in a conical structure, the side of the upper end of the lower baffle and the upper baffle are fixedly connected by connecting rods, the connecting rods are distributed in a circular array, the lower baffle is designed in an annular structure, and the lower baffle is fixedly connected to the treatment tower.

[0011] Preferably, the outer diameter of the lower baffle is larger than the inner diameter of the upper baffle, the upper end of the lower baffle is located inside the connecting rod and a heat exchange coil is installed, and both ends of the heat exchange coil extend to the outside of the treatment tower and are provided with a circulation pipe.

[0012] Preferably, the diverter baffle is designed in a conical structure, the outer diameter of the diverter baffle is larger than the inner diameter of the outlet pipe, and the upper end of the diverter baffle is fixedly connected to the upper end of the processing tower through a connecting frame.

[0013] Preferably, the dust removal filters are distributed in a ring array, and the dust removal filters are adapted to the connecting frame.

[0014] Beneficial Effects

[0015] The utility model provides an integrated device for desulfurization, dust removal and waste heat recovery. Compared with the prior art, it has the following beneficial effects:

[0016] The integrated desulfurization, dust removal and waste heat recovery equipment is provided with a treatment tower, a spray desulfurization component, a heat exchange component and a dust removal filter. When the flue gas enters the treatment tower, it is sprayed by the spray separation component, and the spray reducing agent liquid contacts the flue gas to achieve desulfurization of the flue gas. When the liquid is adsorbed, it also exchanges heat with the flue gas. The heated liquid falls to the bottom of the treatment tower and settles. The heat exchange plate is used to exchange heat with the liquid to achieve waste heat recovery. At the same time, after the flue gas is sprayed, the heat exchange component contacts the flue gas to recover the residual heat in the flue gas, thereby ensuring the effect of waste heat recovery. Finally, the flue gas is filtered through the dust removal filter and discharged. The overall equipment realizes the integration of desulfurization, dust removal and waste heat recovery, thereby improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the internal cross-sectional structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the heat exchange plate of the utility model;

[0020] Figure 4 It is a schematic diagram of the top view structure of the dust removal filter of the utility model.

[0021] In the figure: 1. treatment tower; 2. support frame; 3. air inlet pipe; 4. air outlet pipe; 5. spray desulfurization assembly; 51. diverter pipe; 52. liquid delivery pipe; 53. spray head; 6. heat exchange plate; 61. heat exchange tube; 62. circulation joint; 7. sewage pipe; 8. heat exchange assembly; 81. lower baffle; 82. upper baffle; 83. connecting rod; 84. heat exchange coil; 85. circulation tube; 9. diverter baffle; 91. connecting frame; 10. dust filter. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4The utility model provides a technical solution: an integrated desulfurization, dust removal and waste heat recovery device, including a processing tower 1, a support frame 2 is fixedly connected to the lower end of the processing tower 1, an air inlet pipe 3 is arranged at the left end of the surface of the processing tower 1, an air outlet pipe 4 is arranged at the upper end of the processing tower 1, a spray desulfurization component 5 is arranged on the inner side of the processing tower 1, and two spray desulfurization components 5 are arranged. The spray desulfurization component 5 includes a shunt pipe 51, and there are three shunt pipes 51 distributed at equal intervals. The three shunt pipes 51 are fixedly connected to the processing tower 1, a liquid delivery pipe 52 is arranged on the outer side of the surface of the processing tower 1, and the shunt pipe 51 and the liquid delivery pipe 52 are connected by a pipeline. A spray head 53 is arranged on the lower end face of the shunt pipe 51, and the spray heads 53 are distributed at equal intervals. A heat exchange plate 6 is arranged on the bottom of the inner side of the processing tower 1, and the upper side of the heat exchange plate 6 Heat exchange tubes 61 are fixedly installed at both ends of the lower part, and the heat exchange tubes 61 are distributed at equal intervals. The heat exchange plate 6 is designed as a hollow structure. Circulation joints 62 are arranged on the left and right sides of the front end of the heat exchange plate 6. The height of the heat exchange plate 6 is adapted to the air inlet pipe 3. The flue gas enters the treatment tower 1 through the air inlet pipe 3. The reducing agent liquid is sent into the diversion pipe 51 by the liquid delivery pipe 52 and the reducing agent liquid supply device, so that the spray head 53 sprays in the treatment tower 1, so that the liquid and the flue gas are in contact to achieve desulfurization treatment. The liquid absorbs the heat in the flue gas during spraying, and the heated liquid falls to the bottom of the treatment tower 1. The heat exchange plate 6 and the liquid exchange heat to achieve heat recovery. The pipeline is connected by the circulation joint 62 to facilitate the use of heat, and the heat exchange medium circulates in the heat exchange plate 6 through the circulation joint 62.

[0024] A sewage pipe 7 is fixedly installed at the lower end of the treatment tower 1, and a heat exchange component 8 is installed at the upper end of the inner side of the treatment tower 1. The heat exchange component 8 includes a lower baffle 81 and an upper baffle 82. The lower end surface of the lower baffle 81 is designed in a conical connection structure. The side of the upper end of the lower baffle 81 is fixedly connected to the upper baffle 82 through a connecting rod 83. The connecting rod 83 is distributed in a ring array. The lower baffle 81 is designed in an annular structure. The lower baffle 81 is fixedly connected to the treatment tower 1. The outer diameter of the lower baffle 81 is larger than the inner diameter of the upper baffle 82. The upper end of the lower baffle 81 is located on the inner side of the connecting rod 83 and a heat exchange coil 84 is installed. Both ends of the heat exchange coil 84 extend to the outside of the treatment tower 1 and a circulation pipe 85 is arranged. The lower baffle 81 is used to block the rising flue gas, while the flue gas flows from the side of the lower baffle 81 and contacts the heat exchange coil 84 to achieve heat exchange, recover the residue in the flue gas, and improve the waste heat recovery effect.

[0025] A diverter baffle 9 is provided on the inner side of the treatment tower 1 above the heat exchange component 8. The diverter baffle 9 is designed with a conical structure. The outer diameter of the diverter baffle 9 is larger than the inner diameter of the outlet pipe 4. The upper end of the diverter baffle 9 is fixedly connected to the upper end of the treatment tower 1 through a connecting frame 91. A dust filter 10 is provided on the side of the upper end of the diverter baffle 9. The dust filter 10 is distributed in a ring array. The dust filter 10 is adapted to the connecting frame 91. The diverter baffle 9 is used to block the rising flue gas, so that the flue gas flows from the diverter baffle 9 and is discharged from the outlet pipe 4 after passing through the dust filter 10, thereby realizing dust removal treatment.

[0026] During operation, the flue gas enters the treatment tower 1 through the air inlet pipe 3, and the reducing agent liquid is sent into the shunt pipe 51 by the liquid delivery pipe 52 and the reducing agent liquid supply device, so that the spray head 53 sprays in the treatment tower 1, so that the liquid and the flue gas are in contact to achieve desulfurization treatment. The liquid absorbs the heat in the flue gas during spraying, and the heated liquid falls to the bottom of the treatment tower 1, and the heat is exchanged with the liquid by the heat exchange plate 6 to achieve heat recovery. The pipeline is connected by the circulation joint 62 to facilitate the use of heat, and the heat is circulated in the heat exchange plate 6 through the circulation joint 62. The heat medium and the smoke after desulfurization treatment rise, and the lower baffle 81 is used to block the rising smoke, and the smoke flows from the side of the lower baffle 81 and contacts the heat exchange coil 84 to achieve heat exchange. At the same time, the circulation pipe 85 sends the heat exchange medium in the heat exchange coil 84 to facilitate the unified recovery of heat, and recover the residual heat in the smoke, thereby improving the waste heat recovery effect. Finally, the diverter baffle 9 is used to block the rising smoke, so that the smoke flows from the diverter baffle 9 and is discharged from the exhaust pipe 4 after passing through the dust removal filter 10 to achieve dust removal treatment.

[0027] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. An integrated desulfurization, dust removal and waste heat recovery device, comprising a treatment tower (1), characterized in that: The lower end of the treatment tower (1) is fixedly connected to a support frame (2), the left end of the surface of the treatment tower (1) is provided with an air inlet pipe (3), the upper end of the treatment tower (1) is provided with an air outlet pipe (4), the inner side of the treatment tower (1) is provided with a spray desulfurization component (5), the bottom of the inner side of the treatment tower (1) is provided with a heat exchange plate (6), the lower end of the treatment tower (1) is fixedly installed with a sewage pipe (7), the upper end of the inner side of the treatment tower (1) is provided with a heat exchange component (8), the inner side of the treatment tower (1) is provided with a diverter baffle (9) above the heat exchange component (8), and the side of the upper end of the diverter baffle (9) is provided with a dust removal filter (10).

2. The integrated desulfurization, dust removal and waste heat recovery equipment according to claim 1 is characterized in that: Two spray desulfurization components (5) are provided, and the spray desulfurization components (5) include a shunt pipe (51), and three shunt pipes (51) are distributed at equal intervals. The three shunt pipes (51) are fixedly connected to the treatment tower (1), and a liquid delivery pipe (52) is provided on the outer side of the surface of the treatment tower (1). The shunt pipe (51) and the liquid delivery pipe (52) are connected through a pipeline. A spray head (53) is provided on the lower end surface of the shunt pipe (51), and the spray heads (53) are distributed at equal intervals.

3. The integrated desulfurization, dust removal and waste heat recovery equipment according to claim 1 is characterized in that: Heat exchange tubes (61) are fixedly mounted at both upper and lower ends of the heat exchange plate (6), and the heat exchange tubes (61) are distributed at equal intervals. The heat exchange plate (6) is designed as a hollow structure, and circulation joints (62) are arranged on both left and right sides of the front end of the heat exchange plate (6). The height of the heat exchange plate (6) is adapted to the air intake pipe (3).

4. The integrated desulfurization, dust removal and waste heat recovery equipment according to claim 1 is characterized in that: The heat exchange assembly (8) comprises a lower baffle (81) and an upper baffle (82); the lower end surface of the lower baffle (81) is designed in a conical structure; the side of the upper end of the lower baffle (81) and the upper baffle (82) are fixedly connected via connecting rods (83); the connecting rods (83) are distributed in a ring array; the lower baffle (81) is designed in a ring structure; and the lower baffle (81) is fixedly connected to the treatment tower (1).

5. The integrated desulfurization, dust removal and waste heat recovery equipment according to claim 4 is characterized in that: The outer diameter of the lower baffle (81) is greater than the inner diameter of the upper baffle (82); the upper end of the lower baffle (81) is located on the inner side of the connecting rod (83) and is provided with a heat exchange coil (84); both ends of the heat exchange coil (84) extend to the outer side of the treatment tower (1) and are provided with a circulation pipe (85).

6. The integrated desulfurization, dust removal and waste heat recovery equipment according to claim 1 is characterized in that: The diverter baffle (9) is designed to have a conical structure, the outer diameter of the diverter baffle (9) is larger than the inner diameter of the outlet pipe (4), and the upper end of the diverter baffle (9) is fixedly connected to the upper end of the treatment tower (1) via a connecting frame (91).

7. The integrated desulfurization, dust removal and waste heat recovery equipment according to claim 6 is characterized in that: The dust removal filters (10) are distributed in a ring array, and the dust removal filters (10) are adapted to the connecting frame (91).

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