CN210495813U - Double-tower double-circulation desulfurization device - Google Patents
Double-tower double-circulation desulfurization device Download PDFInfo
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- CN210495813U CN210495813U CN201920785536.7U CN201920785536U CN210495813U CN 210495813 U CN210495813 U CN 210495813U CN 201920785536 U CN201920785536 U CN 201920785536U CN 210495813 U CN210495813 U CN 210495813U
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Abstract
The utility model relates to a two tower dual cycle desulphurization unit, including being located different level's one-level absorption tower and second grade absorption tower, the one-level absorption tower is located the below of second grade absorption tower, one-level absorption tower intercommunication has the flue, the top export of one-level absorption tower communicates the second grade absorption tower through the liaison flue, the top exit linkage of second grade absorption tower has top of the tower chimney, the lower part of one-level absorption tower is through one-level tower thick liquid circulating line, the middle part intercommunication of one-level tower circulating pump and one-level absorption tower, the lower part of second grade absorption tower is through second grade tower thick liquid circulating line, the middle part intercommunication of second grade tower circulating pump and second grade absorption tower. The utility model provides a pair of two tower dual cycle desulphurization unit, because one-level absorption tower and second grade absorption tower are located different level, compare in the two-stage absorption tower of arranging side by side, save area more, the construction length of contact flue and top of the tower chimney shortens, and the lift flow of second grade tower circulating pump is little, reduces the engineering arrangement cost.
Description
Technical Field
The utility model relates to a flue gas desulfurization technical field especially relates to a two tower dual cycle desulphurization unit.
Background
The flue gas discharged from coal-fired power plants contains a large amount of sulfur dioxide, and if the flue gas is directly discharged without being treated, the flue gas can generate great harm to the environment and the economic development. The limestone-gypsum wet flue gas desulfurization technology is the most applied and mature desulfurization technology at present, and the absorption tower is the core equipment of the technology. With the stricter environmental protection standard, when the desulfurization efficiency of a single tower cannot meet the emission requirement, the newly built secondary tower can be considered to be modified. After the flue gas enters a first-stage absorption tower, part of SO2And the sulfur is removed and then enters a secondary absorption tower from the outlet of the primary absorption tower to complete secondary desulfurization. The two-stage absorption tower has different working emphasis points, the first-stage absorption tower operates at a low pH value, the heavy oxidation is performed, the second-stage absorption tower operates at a high pH value, and the efficiency is ensured. Compared with the single-tower transformation scheme, the newly-added secondary tower has the advantages of large process floor area, difficulty in arrangement, larger project amount of newly-added connecting flues and newly-added secondary towers and increased investment cost.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above-mentioned not enough of prior art, the utility model provides a two tower dual cycle desulphurization unit solves the area that current two tower desulfurization exists big, the huge problem of contact flue and second grade tower engineering volume.
The utility model discloses a realize through following technical scheme:
the utility model provides a double-tower double-circulation desulphurization unit, is including being located different level's one-level absorption tower and second grade absorption tower, the one-level absorption tower is located the below of second grade absorption tower, one-level absorption tower intercommunication has the flue, the top export of one-level absorption tower communicates the second grade absorption tower through the contact flue, the top exit linkage of second grade absorption tower has the top of the tower chimney, the lower part of one-level absorption tower is through the middle part intercommunication of one-level tower thick liquid circulation pipeline, one-level tower circulating pump and one-level absorption tower, the lower part of second grade absorption tower is through the middle part intercommunication of second grade tower thick liquid circulation pipeline, second grade tower circulating pump and second grade absorption tower, one-level tower circulating pump and one-level absorption tower are located same level, second grade tower circulating pump and second grade absorption tower are.
Furthermore, the installation elevation of the first-stage absorption tower is 10-12m lower than that of the second-stage absorption tower.
Furthermore, the primary absorption tower, the secondary absorption tower, the flue, the connecting flue and the tower top chimney are all made of carbon steel, the inner surface of the primary absorption tower, the secondary absorption tower, the flue, the connecting flue and the tower top chimney is provided with a glass flake daub layer, and the outer surface of the primary absorption tower, the secondary absorption tower, the flue, the connecting flue and the tower top; and the paint layer on the outer surface of the flue and the connection flue is also provided with a heat-insulating layer.
Further, the height of the tower top chimney is 60m above the ground.
Furthermore, the first-stage tower slurry circulating pipeline and the second-stage tower slurry circulating pipeline are made of carbon steel lining rubber materials, and paint layers are arranged on the outer surfaces of the first-stage tower slurry circulating pipeline and the second-stage tower slurry circulating pipeline.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model provides a pair of two tower dual cycle desulphurization unit, because one-level absorption tower and second grade absorption tower are located different level, compare in the two-stage absorption tower of arranging side by side, save area more, the construction length of contact flue and top of the tower chimney shortens, and the lift flow of second grade tower circulating pump is little, reduces the engineering arrangement cost.
Drawings
Fig. 1 is a schematic structural diagram of a double-tower double-circulation desulfurization device of the present invention.
In the figure:
1. a flue; 2. a first-stage absorption tower; 3. a first-stage tower circulating pump; 4. a connecting flue; 5. a secondary absorption tower; 6. a second-stage tower circulating pump; 7. a tower top chimney; 8. a primary tower slurry circulation pipeline; 9. and a secondary tower slurry circulating pipeline.
Detailed Description
The following examples are presented to illustrate certain embodiments of the invention and should not be construed as limiting the scope of the invention. The present disclosure may be modified from materials, methods, and reaction conditions at the same time, and all such modifications are intended to be within the spirit and scope of the present disclosure.
A double-tower double-circulation desulfurization apparatus as shown in fig. 1, comprising a primary absorption tower 2 and a secondary absorption tower 5 at different levels, the primary absorption tower 2 is positioned below the secondary absorption tower 5, the primary absorption tower 2 is communicated with a flue 1, the top outlet of the primary absorption tower 2 is communicated to a secondary absorption tower 5 through a connecting flue 4, the top outlet of the secondary absorption tower 5 is connected with a tower top chimney 7, the lower part of the first-stage absorption tower 2 is communicated with the middle part of the first-stage absorption tower 2 through a first-stage tower slurry circulating pipeline 8 and a first-stage tower circulating pump 3, the lower part of the secondary absorption tower 5 is communicated with the middle part of the secondary absorption tower 5 through a secondary tower slurry circulating pipeline 9 and a secondary tower circulating pump 6, the first-stage tower circulating pump 3 and the first-stage absorption tower 2 are located at the same horizontal height, and the second-stage tower circulating pump 6 and the second-stage absorption tower 5 are located at the same horizontal height.
The installation elevation of the first-stage absorption tower 2 is 10-12m lower than that of the second-stage absorption tower 5.
The first-stage absorption tower 2, the second-stage absorption tower 5, the flue 1, the connecting flue 4 and the tower top chimney 7 are all made of carbon steel, a glass flake daub layer is arranged on the inner surface of the first-stage absorption tower, and a paint layer is arranged on the outer surface of the first-stage absorption tower; and the paint layers on the outer surfaces of the flue 1 and the connecting flue 4 are also provided with heat-insulating layers, and the thickness of each heat-insulating layer is 80-120 mm.
The height of the tower top chimney 7 is 60m above the ground.
The first-stage tower slurry circulating pipeline 8 and the second-stage tower slurry circulating pipeline 9 are both made of carbon steel lining rubber materials, and paint layers are arranged on the outer surfaces of the first-stage tower slurry circulating pipeline 8 and the second-stage tower slurry circulating pipeline 9.
During specific work, flue gas enters a primary absorption tower 2 from a flue 1, after being purified by the primary absorption tower 2, the flue gas enters a connecting flue 4 from a top outlet of the primary absorption tower 2 and then enters a secondary absorption tower 5, the purified flue gas is discharged to the atmosphere through a tower top chimney 7, slurry in the primary absorption tower 2 completes slurry circulation through a primary tower circulating pump 3 and a primary tower slurry circulating pipeline 8, and slurry in the secondary absorption tower 5 completes slurry circulation through a secondary tower circulating pump 6 and a secondary tower slurry circulating pipeline 9.
This desulphurization unit is because one-level absorption tower and second grade absorption tower are located the level height of difference, compares in the two-stage absorption tower of arranging side by side, saves area more, and the construction length of contact flue and top of the tower chimney shortens (according to the standard, the export of top of the tower chimney is a definite value for the height on ground, but here second grade absorption tower has certain height in comparison with ground, so the length of top of the tower chimney will obviously shorten), and the lift flow of second grade tower circulating pump is little, reduces the engineering arrangement cost.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (5)
1. The double-tower double-circulation desulfurization device is characterized by comprising a first-stage absorption tower (2) and a second-stage absorption tower (5) which are positioned at different levels, wherein the first-stage absorption tower (2) is positioned below the second-stage absorption tower (5), the first-stage absorption tower (2) is communicated with a flue (1), the top outlet of the first-stage absorption tower (2) is communicated with the second-stage absorption tower (5) through a connecting flue (4), the top outlet of the second-stage absorption tower (5) is connected with a tower top chimney (7), the lower part of the first-stage absorption tower (2) is communicated with the middle part of the first-stage absorption tower (2) through a first-stage tower slurry circulation pipeline (8) and a first-stage tower circulation pump (3), the lower part of the second-stage absorption tower (5) is communicated with the middle part of the second-stage absorption tower (5) through a second-stage tower slurry circulation pipeline (9) and a second-stage tower circulation pump (6), and the first-, and the secondary tower circulating pump (6) and the secondary absorption tower (5) are positioned at the same horizontal height.
2. The twin-tower twin-cycle desulfurization apparatus according to claim 1, characterized in that the installation level of the primary absorption tower (2) is 10-12m lower than that of the secondary absorption tower (5).
3. The double-tower double-circulation desulfurization device according to claim 1, characterized in that the primary absorption tower (2), the secondary absorption tower (5), the flue (1), the connecting flue (4) and the tower top chimney (7) are made of carbon steel, and the inner surface is provided with a glass flake daub layer, and the outer surface is provided with a paint layer; and the paint layers on the outer surfaces of the flue (1) and the connecting flue (4) are also provided with heat-insulating layers.
4. A double column double cycle desulphurisation device according to claim 1 wherein the top chimney (7) level is at 60m above ground level.
5. The twin-tower twin-cycle desulfurization apparatus according to claim 1, characterized in that the primary tower slurry circulation pipe (8) and the secondary tower slurry circulation pipe (9) are made of carbon steel lining rubber, and paint layers are provided on the outer surfaces of the primary tower slurry circulation pipe (8) and the secondary tower slurry circulation pipe (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920785536.7U CN210495813U (en) | 2019-05-28 | 2019-05-28 | Double-tower double-circulation desulfurization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920785536.7U CN210495813U (en) | 2019-05-28 | 2019-05-28 | Double-tower double-circulation desulfurization device |
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| Publication Number | Publication Date |
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| CN210495813U true CN210495813U (en) | 2020-05-12 |
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| CN201920785536.7U Active CN210495813U (en) | 2019-05-28 | 2019-05-28 | Double-tower double-circulation desulfurization device |
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| CN (1) | CN210495813U (en) |
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