CN220573116U - Combined flue gas desulfurization device - Google Patents
Combined flue gas desulfurization device Download PDFInfo
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- CN220573116U CN220573116U CN202321998886.4U CN202321998886U CN220573116U CN 220573116 U CN220573116 U CN 220573116U CN 202321998886 U CN202321998886 U CN 202321998886U CN 220573116 U CN220573116 U CN 220573116U
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 174
- 230000023556 desulfurization Effects 0.000 title claims abstract description 174
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 239000003546 flue gas Substances 0.000 title claims abstract description 38
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 116
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 116
- 239000004571 lime Substances 0.000 claims abstract description 116
- 239000003513 alkali Substances 0.000 claims abstract description 40
- 239000007788 liquid Substances 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 239000000779 smoke Substances 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 18
- 239000010440 gypsum Substances 0.000 claims description 11
- 229910052602 gypsum Inorganic materials 0.000 claims description 11
- 239000002002 slurry Substances 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 4
- 230000003009 desulfurizing effect Effects 0.000 abstract description 68
- 238000011010 flushing procedure Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000002351 wastewater Substances 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000003795 chemical substances by application Substances 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 9
- 241000208125 Nicotiana Species 0.000 description 6
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 6
- 239000007921 spray Substances 0.000 description 5
- 238000004064 recycling Methods 0.000 description 3
- 235000019738 Limestone Nutrition 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model discloses a combined flue gas desulfurization device which comprises a primary desulfurization component, a secondary desulfurization component, a tertiary desulfurization component, a desulfurization pool component, an alkali liquor component, a lime cleaning component and a back flushing component. The utility model adopts a structural form of multistage desulfurization to improve desulfurization efficiency, and the design of the desulfurizing towers with different desulfurizing agent structures ensures the stable operation of the desulfurizing system, saves the operation cost of the desulfurizing system, ensures the stable operation of the desulfurizing system and improves the economic benefit of enterprises; the overflow holes are designed among the lime ponds, so that the balance of the water quantity and the concentration of the lime ponds is realized in a self-flowing mode, the equipment investment and the energy consumption investment are reduced, and the investment cost and the production energy consumption are effectively reduced; lime filtering clear liquid is recycled to the desulfurizing tower, so that the clean water loss is reduced, the waste water is avoided, and the purposes of energy conservation and emission reduction are achieved.
Description
Technical Field
The utility model relates to the technical field of flue gas desulfurization, in particular to a combined flue gas desulfurization device.
Background
The study and application of desulfurization technology has started in the twentieth 50 s, and over 200 SO2 control technologies have been developed through many years of research. At present, the existing domestic flue gas desulfurization process generally adopts an alkali liquor desulfurization process or a wet limestone desulfurization process, and the two desulfurization processes can achieve the desulfurization effect, however, the alkali liquor desulfurization process has the characteristics of high desulfurization operation cost due to high price of a desulfurizing agent, large amount of generated wastewater and complicated subsequent treatment of wastewater; the wet limestone desulfurization process has the characteristics that the clean water consumption is large, the structure of the spray head in the tower is easy to scale, and the desulfurization efficiency is affected.
Disclosure of Invention
In view of the above, the primary object of the present utility model is to provide a combined flue gas desulfurization device.
In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:
the embodiment of the utility model provides a combined flue gas desulfurization device which comprises a primary desulfurization component, a secondary desulfurization component, a tertiary desulfurization component, a desulfurization pond component, an alkali liquor component, a lime cleaning component and a back flushing component, wherein the input end of the primary desulfurization component is connected with a flue gas inlet, the output end of the primary desulfurization component is connected with the input end of the secondary desulfurization component, the output end of the secondary desulfurization component is connected with the input end of the tertiary desulfurization component, the output end of the tertiary desulfurization component is connected with a flue gas outlet, the desulfurization pond component is respectively connected with the primary desulfurization component and the secondary desulfurization component and is used for supplying lime slurry, the alkali liquor component is connected with the tertiary desulfurization component and is used for alkali solution, the input end of the lime cleaning component is connected with the desulfurization pond component and is used for obtaining filtered water in the desulfurization pond component, and the output end of the lime cleaning component is connected with the back flushing component respectively arranged in the primary desulfurization component and the secondary desulfurization component and is used for cleaning the primary desulfurization component and the secondary desulfurization component.
In the above-mentioned scheme, one-level desulfurization subassembly includes one-level desulfurizing tower, one-level circulating pump, one-level tobacco pipe, one-level back flow, one side bottom and the flue gas inlet connection of one-level desulfurizing tower, the input and the desulfurization pond subassembly of one-level circulating pump are connected, a plurality of one-level conveyer pipe is connected to the output of one-level circulating pump, a plurality of one-level conveyer pipe is even vertically arranged in one-level desulfurizing tower, one-level tobacco pipe sets up in the top of one-level desulfurizing tower, one end and the bottom of one-level desulfurizing tower of one-level back flow are connected, the other end of one-level back flow is arranged in the desulfurization pond subassembly.
In the above-mentioned scheme, second grade desulfurization subassembly includes second grade desulfurizing tower, second grade circulating pump, second grade tobacco pipe, second grade back flow, one side bottom and the one-level tobacco pipe of second grade desulfurizing tower are connected, the input and the desulfurization pond subassembly of second grade circulating pump are connected, a plurality of second grade conveyer pipe are connected to the output of second grade circulating pump, and a plurality of second grade conveyer pipe is even vertically arranged in the second grade desulfurizing tower, the second grade tobacco pipe sets up in the top of second grade desulfurizing tower, the one end and the bottom of second grade desulfurizing tower of second grade back flow are connected, the other end of second grade back flow is arranged in the desulfurization pond subassembly.
In the above-mentioned scheme, desulfurization pond subassembly includes lime one-level pond, lime second grade pond, lime tertiary pond, overflows pond, one-level stirring pump, second grade stirring pump, tertiary stirring pump, lime one-level pond, lime second grade pond, lime tertiary pond set up respectively in the both sides of overflowing the pond, one-level stirring pump sets up in lime one-level pond, the second grade stirring pump sets up in lime second grade pond, tertiary stirring pump sets up in lime third grade pond, be provided with one-level overflow hole between lime one-level pond and the overflowed pond, be provided with the second grade overflow hole between lime third grade pond and the overflowed pond, be provided with the overflow hole between lime second grade pond and the overflowed pond.
In the scheme, the primary return pipe is arranged in the lime primary tank, and the secondary return pipe is arranged in the lime secondary tank and used for recycling lime slurry.
In the above-mentioned scheme, tertiary desulfurization subassembly includes tertiary desulfurizing tower, tertiary circulating pump, tertiary back flow, one side bottom and the second grade tobacco pipe of tertiary desulfurizing tower are connected, the input and the alkali lye subassembly of tertiary circulating pump are connected, the output of tertiary circulating pump is connected a plurality of tertiary conveyer pipe, a plurality of tertiary conveyer pipe is even vertically arranged in tertiary desulfurizing tower, the top and the flue gas exit linkage of tertiary desulfurizing tower, the one end and the bottom of tertiary desulfurizing tower of tertiary back flow are connected, the other end of tertiary back flow is arranged in the alkali lye subassembly.
In the above scheme, the alkali lye subassembly includes the alkali lye pond, the alkali lye pond sets up in the one side in overflow pond, the input and the alkali lye pond of tertiary circulating pump are connected, the other end of tertiary back flow is arranged in the alkali lye pond for retrieve alkali lye.
In the above-mentioned scheme, lime washs the subassembly and includes pressure filter feed pump, gypsum compressor, lime clear liquid pond, the one end of pressure filter feed pump is connected with lime one-level pond, the other end of pressure filter feed pump is connected with the one end of gypsum compressor, the other end of gypsum compressor is connected with lime clear liquid pond.
In the scheme, the back flush assembly comprises a lime clear liquid pipeline, back flush branch pipes and nozzles, wherein the back flush branch pipes comprise a plurality of back flush branch pipes which are respectively and uniformly arranged in the primary desulfurization tower and the secondary desulfurization tower, the back flush branch pipes are all connected with one end of the lime clear liquid pipeline, the other end of the lime clear liquid pipeline is connected with a lime clear liquid pool through a back flush pump, and each back flush branch pipe is uniformly provided with a plurality of nozzles.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model adopts a structural form of multistage desulfurization to improve desulfurization efficiency, and the design of the desulfurizing towers with different desulfurizing agent structures ensures the stable operation of the desulfurizing system, saves the operation cost of the desulfurizing system, ensures the stable operation of the desulfurizing system and improves the economic benefit of enterprises; the overflow holes are designed among the lime ponds, so that the balance of the water quantity and the concentration of the lime ponds is realized in a self-flowing mode, the equipment investment and the energy consumption investment are reduced, and the investment cost and the production energy consumption are effectively reduced; lime filtering clear liquid is recycled to the desulfurizing tower, so that the clean water loss is reduced, the waste water is avoided, and the purposes of energy conservation and emission reduction are achieved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:
FIG. 1 is a schematic diagram of a combined flue gas desulfurization apparatus according to an embodiment of the present utility model;
FIG. 2 is a schematic view showing a construction of a desulfurization pond assembly according to an embodiment of the present utility model;
fig. 3 is a schematic structural view of a backwash assembly according to an embodiment of the present utility model.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the devices or elements being referred to must have specific directions, be constructed and operated in specific directions, so that the terms describing the positional relationships in the drawings are merely for exemplary illustration, are not to be construed as limitations of the present patent, and the specific meanings of the terms described above may be understood by those of ordinary skill in the art according to specific circumstances.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, article or apparatus that comprises the element.
The first embodiment of the utility model provides a combined flue gas desulfurization device, which comprises a first-stage desulfurization component, a second-stage desulfurization component, a third-stage desulfurization component, a desulfurization pond component, an alkali liquor component, a lime cleaning component and a back flushing component, wherein the input end of the first-stage desulfurization component is connected with a flue gas inlet, the output end of the first-stage desulfurization component is connected with the input end of the second-stage desulfurization component, the output end of the second-stage desulfurization component is connected with the input end of the third-stage desulfurization component, the output end of the third-stage desulfurization component is connected with a flue gas outlet, the desulfurization pond component is respectively connected with the first-stage desulfurization component and the second-stage desulfurization component and is used for supplying lime slurry, the alkali liquor component is connected with the third-stage desulfurization component and is used for alkali solution, the input end of the lime cleaning component is connected with the desulfurization pond component and is used for obtaining filtered water in the desulfurization pond component, and the output end of the lime cleaning component is connected with the back flushing component respectively arranged in the first-stage desulfurization component and the second-stage desulfurization component and is used for cleaning the first-stage desulfurization component and the second-stage desulfurization component.
As shown in fig. 1, the primary desulfurization assembly comprises a primary desulfurization tower 1, a primary circulating pump 4, a primary smoke pipe 23 and a primary return pipe 25, wherein one side bottom of the primary desulfurization tower 1 is connected with a smoke inlet 21, the input end of the primary circulating pump 4 is connected with a desulfurization pond assembly, the output end of the primary circulating pump 4 is connected with a plurality of primary conveying pipes 41, the primary conveying pipes 41 are uniformly and longitudinally arranged in the primary desulfurization tower 1, the primary smoke pipe 23 is arranged at the top of the primary desulfurization tower 1, one end of the primary return pipe 25 is connected with the bottom of the primary desulfurization tower 1, and the other end of the primary return pipe 25 is arranged in the desulfurization pond assembly.
As shown in fig. 1, the secondary desulfurization assembly comprises a secondary desulfurization tower 2, a secondary circulation pump 5, a secondary smoke pipe 24 and a secondary return pipe 26, wherein one side bottom of the secondary desulfurization tower 2 is connected with the primary smoke pipe 23, the input end of the secondary circulation pump 5 is connected with the desulfurization pond assembly, the output end of the secondary circulation pump 5 is connected with a plurality of secondary conveying pipes 51, a plurality of secondary conveying pipes 51 are uniformly and longitudinally arranged in the secondary desulfurization tower 2, the secondary smoke pipe 24 is arranged at the top of the secondary desulfurization tower 2, one end of the secondary return pipe 26 is connected with the bottom of the secondary desulfurization tower 2, and the other end of the secondary return pipe 26 is arranged in the desulfurization pond assembly.
In the scheme, the first-stage desulfurizing tower 1 is a first lime desulfurizing tower for desulfurizing flue gas, the second-stage desulfurizing tower 2 is a second lime desulfurizing tower for desulfurizing flue gas, and is positioned on the right side of the first-stage desulfurizing tower 1, the left side of the second-stage desulfurizing tower 2 is connected with a first-stage smoke pipe 23, and the first-stage smoke pipe 23 is connected with the top of the first-stage desulfurizing tower 1, so that a flue gas closed loop is formed.
As shown in fig. 1 and 2, the desulfurization pond assembly includes a first-stage lime pond 13, a second-stage lime pond 14, a third-stage lime pond 15, an overflow pond 31, a first-stage stirring pump 10, a second-stage stirring pump 11, and a third-stage stirring pump 12, wherein the first-stage lime pond 13, the second-stage lime pond 14, and the third-stage lime pond 15 are respectively disposed at two sides of the overflow pond 31, the first-stage stirring pump 10 is disposed in the first-stage lime pond 13, the second-stage stirring pump 11 is disposed in the second-stage lime pond 14, the third-stage stirring pump 12 is disposed in the third-stage lime pond 15, a first-stage overflow hole 18 is disposed between the first-stage lime pond 13 and the overflow pond 31, a second-stage overflow hole 19 is disposed between the third-stage lime pond 15 and the overflow pond 31, and an overflow hole 20 is disposed between the second-stage lime pond 14 and the overflow pond 31.
As shown in fig. 1, the primary return pipe 25 is arranged in the primary lime pond 13, and the secondary return pipe 26 is arranged in the secondary lime pond 14 for recycling lime slurry.
As shown in fig. 1, the three-stage desulfurization assembly comprises a three-stage desulfurization tower 3, a three-stage circulating pump 6 and a three-stage backflow pipe 27, wherein one side bottom of the three-stage desulfurization tower 3 is connected with a two-stage smoke pipe 24, the input end of the three-stage circulating pump 6 is connected with an alkali liquor assembly, the output end of the three-stage circulating pump 6 is connected with a plurality of three-stage conveying pipes 61, the three-stage conveying pipes 61 are uniformly and longitudinally arranged in the three-stage desulfurization tower 3, the top of the three-stage desulfurization tower 3 is connected with a smoke outlet 22, one end of the three-stage backflow pipe 27 is connected with the bottom of the three-stage desulfurization tower 3, and the other end of the three-stage backflow pipe 27 is arranged in the alkali liquor assembly.
As shown in fig. 1 and 2, the lye assembly comprises a lye pool 16, the lye pool 16 is arranged at one side of an overflow pool 31, the input end of the three-stage circulating pump 6 is connected with the lye pool 16, and the other end of the three-stage return pipe 27 is arranged in the lye pool 16 for recycling lye.
In the above scheme, the three-stage desulfurizing tower 3 is a third alkali liquor desulfurizing tower for desulfurizing flue gas, the three-stage desulfurizing tower 3 is provided with a three-stage circulating pump 6, the three-stage circulating pump 6 sprays the alkali liquor in the alkali liquor pond 16 into the three-stage desulfurizing tower 3 in three layers, the bottom of the three-stage desulfurizing tower 3 is provided with a three-stage return pipe 27, and the alkali liquor returns to the alkali liquor pond 16, so that three-stage desulfurizing is performed in a circulating way; the three-stage desulfurizing tower 3 is positioned on the right side of the two-stage desulfurizing tower 2, the left side of the three-stage desulfurizing tower 3 is connected with a two-stage smoke pipe 24, the two-stage smoke pipe 24 is connected with the top of the two-stage desulfurizing tower 2, and the top of the three-stage desulfurizing tower is provided with a smoke outlet 22, so that the smoke desulfurizing treatment is completed.
As shown in fig. 1 and 2, the lime washing assembly comprises a filter press liquid inlet pump 7, a gypsum compressor 9 and a lime solution tank 17, one end of the filter press liquid inlet pump 7 is connected with the lime primary tank 13, the other end of the filter press liquid inlet pump 7 is connected with one end of the gypsum compressor 9, and the other end of the gypsum compressor 9 is connected with the lime solution tank 17.
As shown in fig. 1 and 3, the back flush assembly comprises a lime clear liquid pipeline 28, a back flush branch pipe 29 and nozzles 30, wherein the back flush branch pipe 29 comprises a plurality of back flush branch pipes, the back flush branch pipes are respectively and uniformly arranged in the primary desulfurization tower 1 and the secondary desulfurization tower 2, the back flush branch pipes 29 are all connected with one end of the lime clear liquid pipeline 28, the other end of the lime clear liquid pipeline 28 is connected with the lime clear liquid tank 17 through a back flush pump 8, and each back flush branch pipe 29 is uniformly provided with a plurality of nozzles 30.
In the above scheme, the lime solution tank 17 is a solution tank after the absorption concentration of the lime primary tank 13 reaches, the lime solution tank is pumped to the gypsum filter press 9 for filtering through the filter press feed pump 7, a back flush water pump 8 is arranged on the lime solution tank 17, the back flush water pump 8 pumps lime filtrate, the primary desulfurization tower 1 and the secondary desulfurization tower 2 are respectively back flushed through a lime solution pipeline 28, the lime solution pipeline 28 is respectively connected with a back flush branch pipe 29 in the primary desulfurization tower 1 and the secondary desulfurization tower 2, and a back flush nozzle 30 is arranged on the back flush branch pipe 29.
The working principle of the utility model is as follows:
as shown in fig. 1-3, the first-stage desulfurizing tower 1 is a first lime desulfurizing tower for desulfurizing flue gas, the left side of the first-stage desulfurizing tower 1 is connected with a flue gas inlet 21, the first-stage desulfurizing tower 1 is provided with a first-stage circulating pump 4, the first-stage circulating pump 4 sprays lime slurry in a second-stage lime pool 14 into the first-stage desulfurizing tower 1 in three layers, the bottom of the first-stage desulfurizing tower 1 is provided with a first-stage return pipe 25, the lime slurry flows back to a first-stage lime pool 13, the first-stage lime pool 13 is provided with a first-stage stirrer 10, and the side wall of the first-stage lime pool 13 is provided with a first-stage overflow hole 18.
The secondary desulfurization tower 2 is a second lime desulfurization tower for flue gas desulfurization and is positioned on the right side of the primary desulfurization tower 1, the left side of the secondary desulfurization tower 2 is connected with a primary flue pipe 23, and the primary flue pipe 23 is connected with the top of the primary desulfurization tower 1, so that a flue gas closed loop is formed; the secondary circulating pump 5 sprays lime slurry in the lime tertiary tank 15 into the secondary desulfurization tower 2 in three layers, a tertiary stirrer 12 is arranged on the lime tertiary tank 15, a secondary return pipe 26 is arranged at the bottom of the secondary desulfurization tower 2, the lime slurry flows back to the lime secondary tank 14, a secondary stirrer 11 is arranged on the lime secondary tank 14, and an overflow hole 20 is arranged on the side wall of the lime secondary tank 14.
The three-stage desulfurizing tower 3 is a third alkali liquor desulfurizing tower for flue gas desulfurization, the three-stage desulfurizing tower 3 is provided with a three-stage circulating pump 6, the three-stage circulating pump 6 sprays alkali liquor in the alkali liquor pond 16 into the three-stage desulfurizing tower 3 in three layers, the bottom of the three-stage desulfurizing tower 3 is provided with a three-stage return pipe 27, and the alkali liquor returns to the alkali liquor pond 16, so that three-stage desulfurization is circularly performed; the three-stage desulfurizing tower 3 is positioned on the right side of the two-stage desulfurizing tower 2, the left side of the three-stage desulfurizing tower 3 is connected with a two-stage smoke pipe 24, the two-stage smoke pipe 24 is connected with the top of the two-stage desulfurizing tower 2, and the top of the three-stage desulfurizing tower is provided with a smoke outlet 22, so that the smoke desulfurizing treatment is completed.
The lime solution pond 17 is a lime solution pond after the absorption concentration of the lime primary pond 13 reaches, the lime solution pond is pumped to the gypsum filter press 9 for filtering through the filter press feed pump 7, a back flush water pump 8 is arranged on the lime solution pond 17, the back flush water pump 8 pumps lime filtrate, the primary desulfurization tower 1 and the secondary desulfurization tower 2 are respectively back flushed through a lime solution pipeline 28, the lime solution pipeline 28 is respectively connected with a back flush branch pipe 29 in the primary desulfurization tower 1 and the secondary desulfurization tower 2, and a back flush nozzle 30 is arranged on the back flush branch pipe 29.
The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the present utility model.
Claims (9)
1. The utility model provides a combination formula flue gas desulfurization device, its characterized in that includes one-level desulfurization subassembly, second grade desulfurization subassembly, tertiary desulfurization subassembly, desulfurization pond subassembly, alkali lye subassembly, lime washing subassembly, back flush subassembly, the input and the flue gas access connection of one-level desulfurization subassembly, the output and the input of second grade desulfurization subassembly of one-level desulfurization subassembly are connected, the output and the flue gas exit linkage of second grade desulfurization subassembly are connected with the input of tertiary desulfurization subassembly, the desulfurization pond subassembly is connected with one-level desulfurization subassembly and second grade desulfurization subassembly respectively for supply lime thick liquid, alkali lye subassembly is connected with tertiary desulfurization subassembly, is used for the alkali lye, the input and the desulfurization pond subassembly of lime washing subassembly are connected for obtain the filtration water in the desulfurization pond subassembly, the output and the back flush subassembly that set up respectively in one-level desulfurization subassembly and second grade desulfurization subassembly of lime washing subassembly are connected, are used for wasing one-level desulfurization subassembly and second grade desulfurization subassembly.
2. The combined flue gas desulfurization device according to claim 1, wherein the primary desulfurization component comprises a primary desulfurization tower, a primary circulating pump, a primary smoke pipe and a primary return pipe, wherein one side bottom of the primary desulfurization tower is connected with a flue gas inlet, the input end of the primary circulating pump is connected with a desulfurization pond component, the output end of the primary circulating pump is connected with a plurality of primary conveying pipes, the plurality of primary conveying pipes are uniformly and longitudinally arranged in the primary desulfurization tower, the primary smoke pipe is arranged at the top of the primary desulfurization tower, one end of the primary return pipe is connected with the bottom of the primary desulfurization tower, and the other end of the primary return pipe is arranged in the desulfurization pond component.
3. The combined flue gas desulfurization device according to claim 2, wherein the secondary desulfurization component comprises a secondary desulfurization tower, a secondary circulating pump, a secondary flue pipe and a secondary return pipe, wherein one side bottom of the secondary desulfurization tower is connected with the primary flue pipe, the input end of the secondary circulating pump is connected with the desulfurization pond component, the output end of the secondary circulating pump is connected with a plurality of secondary conveying pipes, a plurality of secondary conveying pipes are uniformly and longitudinally arranged in the secondary desulfurization tower, the secondary flue pipe is arranged at the top of the secondary desulfurization tower, one end of the secondary return pipe is connected with the bottom of the secondary desulfurization tower, and the other end of the secondary return pipe is arranged in the desulfurization pond component.
4. The combined flue gas desulfurization device according to claim 3, wherein the desulfurization pond assembly comprises a first-stage lime pond, a second-stage lime pond, a third-stage lime pond, an overflow pond, a first-stage stirring pump, a second-stage stirring pump and a third-stage stirring pump, wherein the first-stage lime pond, the second-stage lime pond and the third-stage lime pond are respectively arranged on two sides of the overflow pond, the first-stage stirring pump is arranged in the first-stage lime pond, the second-stage stirring pump is arranged in the second-stage lime pond, the third-stage stirring pump is arranged in the third-stage lime pond, a first-stage overflow hole is arranged between the first-stage lime pond and the overflow pond, a second-stage overflow hole is arranged between the third-stage lime pond and the overflow pond, and an overflow hole is arranged between the second-stage lime pond and the overflow pond.
5. The combined flue gas desulfurization device of claim 4, wherein the primary return pipe is disposed in a primary lime tank, and the secondary return pipe is disposed in a secondary lime tank for recovering lime slurry.
6. The combined flue gas desulfurization device according to claim 5, wherein the three-stage desulfurization component comprises a three-stage desulfurization tower, a three-stage circulating pump and a three-stage backflow pipe, wherein one side bottom of the three-stage desulfurization tower is connected with the two-stage flue pipe, the input end of the three-stage circulating pump is connected with the alkali liquor component, the output end of the three-stage circulating pump is connected with a plurality of three-stage conveying pipes, the three-stage conveying pipes are uniformly and longitudinally arranged in the three-stage desulfurization tower, the top of the three-stage desulfurization tower is connected with the flue gas outlet, one end of the three-stage backflow pipe is connected with the bottom of the three-stage desulfurization tower, and the other end of the three-stage backflow pipe is arranged in the alkali liquor component.
7. The combined flue gas desulfurization device according to claim 6, wherein the alkali solution assembly comprises an alkali solution tank, the alkali solution tank is arranged on one side of the overflow tank, the input end of the three-stage circulating pump is connected with the alkali solution tank, and the other end of the three-stage return pipe is arranged in the alkali solution tank for recovering alkali solution.
8. The combined flue gas desulfurization device of claim 7, wherein the lime cleaning assembly comprises a filter press liquid inlet pump, a gypsum compressor and a lime liquid pool, one end of the filter press liquid inlet pump is connected with the lime first-stage pool, the other end of the filter press liquid inlet pump is connected with one end of the gypsum compressor, and the other end of the gypsum compressor is connected with the lime liquid pool.
9. The combined flue gas desulfurization device according to claim 8, wherein the back flush assembly comprises a lime-clean liquid pipeline, a back flush branch pipe and nozzles, the back flush branch pipe comprises a plurality of back flush branch pipes which are respectively and uniformly arranged in the primary desulfurization tower and the secondary desulfurization tower, the plurality of back flush branch pipes are all connected with one end of the lime-clean liquid pipeline, the other end of the lime-clean liquid pipeline is connected with the lime-clean liquid tank through a back flush pump, and a plurality of nozzles are uniformly arranged on each back flush branch pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321998886.4U CN220573116U (en) | 2023-07-27 | 2023-07-27 | Combined flue gas desulfurization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321998886.4U CN220573116U (en) | 2023-07-27 | 2023-07-27 | Combined flue gas desulfurization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220573116U true CN220573116U (en) | 2024-03-12 |
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| CN202321998886.4U Active CN220573116U (en) | 2023-07-27 | 2023-07-27 | Combined flue gas desulfurization device |
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