CN216024910U - Improve low discharge desulfurization efficiency's of high-sulfur coal percolation sieve tray - Google Patents
Improve low discharge desulfurization efficiency's of high-sulfur coal percolation sieve tray Download PDFInfo
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- CN216024910U CN216024910U CN202121546974.1U CN202121546974U CN216024910U CN 216024910 U CN216024910 U CN 216024910U CN 202121546974 U CN202121546974 U CN 202121546974U CN 216024910 U CN216024910 U CN 216024910U
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Abstract
The utility model discloses a flow-through sieve plate tray for improving the ultralow emission desulfurization efficiency of high-sulfur coal, which comprises a desulfurization tower body, wherein a tray is arranged in the tower body, the tray is placed on an installation support, the tray is formed by mutually connecting a plurality of flow-through sieve plate modules into a circular shape, the flow-through sieve plate tray comprises a plurality of flow-through sieve plate modules, a side plate is arranged on the periphery of each flow-through sieve plate module, sieve holes are formed in the bottom plate of each flow-through sieve plate module, and liquid level communication holes are formed in the side plates. The tray of the cross-flow sieve plate provided by the utility model is composed of a plurality of rectangular or special polygonal modules, circular sieve holes are formed in the bottom plate of the cross-flow sieve plate module, curled edges are arranged on two sides of four side plates of the cross-flow sieve plate module to mutually sleeve adjacent cross-flow sieve plate modules, and the cross-flow sieve plate modules are connected with each other through external thread pipes and pipe hoops, so that the mass transfer and separation efficiency of the tower plate is improved.
Description
Technical Field
The utility model belongs to the technical field of flue gas desulfurization, and particularly relates to a through-flow sieve plate tray for improving the ultralow emission desulfurization efficiency of high-sulfur coal.
Background
The tray tower with the flow-through sieve pores is a tray tower without an overflow device, has a simple structure and large treatment capacity, and is widely applied to industrial processes of large-scale oil refining, gas absorption, dust removal and the like; the main principle of the cross-flow sieve tray for realizing the two-phase separation is as follows: gas-liquid two phases with mass transfer flow in a tray tower with through-flow sieve holes in a countercurrent mode, wherein a gas phase flows from bottom to top, and a liquid phase flows from top to bottom; the liquid phase and the ascending gas phase generate interphase mass transfer in the process of dripping between the trays; on the other hand, when the gas phase passes through the sieve plate, the gas phase bubbles the liquid phase layer, so that the contact mixing strength of the two phases is increased, the update rate of the interface of the two phases is greatly enhanced, and the bubbling mass transfer is generated in the process; however, by carefully analyzing the conventional flow-through sieve tray tower, it can be found that because the diameter of the flow-through sieve tray tower is generally large, the diameter is 10-22m, and in the actual installation process, the levelness of the tray is normal when an inclination angle of about 1 degree appears; however, even such a small horizontal deviation can cause serious uneven distribution of the liquid phase on the tower plate, which leads to excessive pressure drop on the tray and requires a large number of additional bearing beams for supporting; in addition, the non-uniformity of liquid phase distribution on the tray of the traditional flow-through sieve plate and the non-uniformity of a gas phase flow structure caused by the non-uniformity seriously limit the effective contact between gas and liquid phases, so that the mass transfer efficiency of the sieve plate is greatly reduced; by combining the two aspects, the geometric structure of the tray of the flow-through sieve plate is further optimized to improve the uniformity of a gas-liquid two-phase flow structure on the tray, so that the operation power consumption of the tray is reduced, and the gas-liquid two-phase mass transfer efficiency is improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a flow-through sieve plate tray for improving the ultralow-emission desulfurization efficiency of high-sulfur coal, and the mass transfer and separation efficiency of a tower plate are improved.
In order to solve the technical problems, the utility model adopts the technical scheme that: the utility model provides an improve ultra-low discharge desulfurization efficiency's of high sulfur coal cross flow sieve tray, includes the desulfurization tower body, be provided with the tray in the tower body, the tray is placed on the support, the tray is a plurality of cross flow sieve module interconnect and is circularly, cross flow sieve module includes the bottom plate, be provided with the curb plate around the bottom plate, be provided with the sieve mesh on the bottom plate, be provided with the liquid level intercommunicating pore on the curb plate.
The upper end of the side plate is provided with two flanges, the flanges are arranged adjacently, and the adjacent flow-through sieve plate modules are respectively sleeved through the flanges.
The support includes a plurality of crossbeams, and crisscross connection each other is latticed between a plurality of crossbeams, the both ends of crossbeam are connected with the inner wall of tower body respectively.
The liquid level through hole is provided with an external threaded pipe and a pipe hoop, and the adjacent flow-through sieve plate modules are connected with the external threaded pipe through the pipe hoops.
The tower body is cylindrical, the flow-through sieve plate modules positioned in the middle of the tray are rectangular, and the flow-through sieve plate modules positioned at the edge of the tray are special polygons.
Compared with the prior art, the utility model has the following advantages:
the cross-flow sieve plate tray provided by the utility model is composed of a plurality of rectangular or special polygonal modules, circular sieve holes are arranged on a bottom plate of the cross-flow sieve plate module, two edges of four side edges of the cross-flow sieve plate module are provided with turned edges, the adjacent cross-flow sieve plate modules are mutually sleeved, and the cross-flow sieve plate modules are mutually connected through an external thread pipe and a pipe hoop which are arranged at a liquid level communication hole on a side plate, so that the two phases of mass transfer in the cross-flow sieve plate tray are more fully mixed, the main body flow of a liquid phase on the surface of the whole cross-flow sieve plate tray is avoided, the liquid phase on the whole cross-flow sieve plate tray is more uniformly distributed, the drop of the liquid phase on each level of cross-flow sieve plate tray is greatly reduced, the material consumption and the cost of a supporting beam are reduced, and the total mass transfer efficiency is improved.
Drawings
FIG. 1 is a schematic view of an apparatus of the present invention;
FIG. 2 is a view of the relationship of the beams to the tower of the present invention;
FIG. 3 is a schematic view of a rectangular flow-through screen panel of the present invention;
FIG. 4 is a schematic view of a polygonal flow-through screen tray of the present invention;
fig. 5 is a schematic view of the connection between adjacent flow-through screen plates according to the utility model.
In the figure, a tower body 1, a flow-through sieve plate tray 2, a beam 3, sieve holes 4, a liquid level intercommunicating pore 4-1, a side plate 5, a flanging 6, a bottom plate 7, a pipe hoop 8 and an external thread pipe 9.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1, a cross-flow sieve plate tray for improving the ultralow emission desulfurization efficiency of high-sulfur coal comprises a desulfurization tower body 1, wherein a tray is arranged in the tower body 1, the tray is placed on a support, the tray is formed by mutually connecting a plurality of cross-flow sieve plate modules 2 and is circular, each cross-flow sieve plate module 2 comprises a bottom plate 7, side plates 5 are arranged on the periphery of the bottom plate 7, sieve pores 4 are formed in the bottom plate 7, and liquid level communication holes 4-1 are formed in the side plates 5.
As shown in fig. 2 to 5, in this embodiment, the tower body 1 is cylindrical, the tray is circular as a whole, the outer wall of the tray is attached to the inner wall of the tower body 1, when in actual installation, the bracket includes a plurality of cross beams 3, the cross beams 3 are connected in a staggered manner to form a grid, and two ends of each cross beam 3 are respectively welded to the inner wall of the tower body 1 to serve as a bearing bracket of the whole tray; the tray comprises a plurality of rectangular or special polygonal flow-through sieve plate modules 2, the flow-through sieve plate modules 2 positioned in the middle of the tray are rectangular, the flow-through sieve plate modules 2 positioned at the edge of the tray are special polygonal, the flow-through sieve plate modules 2 comprise a bottom plate 7 and a side plate 5, the area of the bottom plate 7 is not more than 8m2To guarantee that the levelness deviation of every bottom plate 7 is less than 5mm, curb plate 5 sets up and passes through welded connection around bottom plate 7, and the height of curb plate 5 should be higher than bottom plate 7 liquid layer height 50 ~ 200mm, and the sideThe upper end of the plate 5 is provided with two flanges 6, the flanges 6 and the side plates 5 are integrally formed, the two flanges 6 are arranged adjacently, the adjacent flow-through sieve plate modules 2 are respectively sleeved through the flanges 6, the flanges 6 at the upper ends of the adjacent side plates 5 are sleeved on the straight edges of the side plates 5, and the flanges 6 are arranged, so that liquid falling from the upper parts of the flow-through sieve plate modules can be guided, and the phenomenon that the gaps between the side plates of the two adjacent modules are too large to cause short circuit of smoke can be prevented; the circular sieve holes 4 are arranged on the bottom plate 7, the number of the sieve holes 4 on the bottom plate 7 is more than 6, the diameter phi of each sieve hole 4 is 25-phi 65, the opening rate is 10-50%, the liquid level communication holes 4-1 are arranged on the side plates 5, the external threaded pipes 9 and the pipe hoops 8 are arranged at the positions of the liquid level communication holes 4-1, two adjacent cross flow sieve plate modules 2 are connected with the external threaded pipes 9 through the pipe hoops 8, each liquid level communication hole 4-1 is arranged at the same elevation, the aperture size is 20 mm-100 mm, the four side plates of each cross flow sieve plate module 2 are provided with at least 12 liquid level communication holes 4-1, the distance between each liquid level communication hole 4-1 and the bottom plate of the cross flow sieve plate module 2 is 20 mm-100 mm, the serous on all the cross flow sieve plate modules 2 in the absorption tower body 1 are ensured to be at the same liquid level depth, and the uniformity and uniformity of the flue gas and the serous on each cross flow sieve plate module 2 are realized, Sufficient contact; when the flue gas load is higher, the flue gas velocity in the circular sieve mesh 4 on the cross flow sieve plate module 2 improves, and the thick liquid volume on the cross flow sieve plate module 2 increases, and the liquid-holding layer degree of depth on the cross flow sieve plate module 2 improves, and the liquid-holding layer degree of depth overflows to the absorption tower thick liquid pond through the overflow pipe when reaching tower body overflow hole position to avoid passing through sieve plate module 2 and go up too big liquid-holding layer degree of depth and arouse that the resistance of flue gas sharply rises of cross flow sieve plate module 2.
When the device is used, the tray is arranged in the desulfurization tower body, atomized liquid drops wash flue gas and then fall onto the flow-through sieve plate module 2, the flue gas is discharged through the sieve holes 4 on the flow-through sieve plate module 2 and falls into the desulfurization tower slurry pool below the flow-through sieve plate module 2, the flue gas passes through the sieve holes 4 from the lower part of the flow-through sieve plate module 2 and contacts with slurry at a certain depth on the flow-through sieve plate module 2 to form a stable bubble layer, gas-liquid contact in the bubble layer is sufficient, so that high pollutant removal efficiency is achieved, and the flue gas continuously flows upwards to sequentially pass through the spraying layer and the demister after passing through the liquid holding layer on the flow-through sieve plate module 2 and finally is discharged through the outlet flue.
The cross-flow sieve plate tray provided by the utility model is composed of a plurality of rectangular or special polygonal modules, a circular sieve pore 4 is arranged on a bottom plate 7 of the cross-flow sieve plate module 2, two edges of four side edges of the cross-flow sieve plate module 2 are provided with turned edges 6, the adjacent cross-flow sieve plate modules 4 are mutually sleeved, the cross-flow sieve plate modules 2 are mutually connected through an external thread pipe 9 and a pipe hoop 8 which are arranged at a liquid level communicating hole 4-1 on a side plate 5, the two phases of mass transfer in the cross-flow sieve plate tray are more fully mixed, the main body flow of a liquid phase on the surface of the whole cross-flow sieve plate tray is avoided, the liquid phase on the whole cross-flow sieve plate tray is more uniformly distributed, the total pressure drop of the liquid phase on each level of cross-flow sieve plate tray is greatly reduced, the material consumption and the cost of a supporting beam are reduced, and the mass transfer efficiency is improved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (5)
1. The utility model provides an improve cross flow sieve tray of ultra-low emission desulfurization efficiency of high sulfur coal, includes desulfurization tower body (1), be provided with the tray in tower body (1), its characterized in that, the tray is placed on the support, the tray is a plurality of cross flow sieve module (2) interconnect and is circularly, cross flow sieve module (2) includes bottom plate (7), be provided with curb plate (5) around bottom plate (7), be provided with sieve mesh (4) on bottom plate (7), be provided with liquid level intercommunicating pore (4-1) on curb plate (5).
2. The flow-through sieve plate tray for improving the ultralow emission desulfurization efficiency of high-sulfur coal as claimed in claim 1, wherein: the upper end of curb plate (5) is provided with turn-ups (6), the quantity of turn-ups (6) is two and adjacent setting, and adjacent percolation sieve plate module (2) cup joints through turn-ups (6) respectively.
3. The flow-through sieve plate tray for improving the ultralow emission desulfurization efficiency of high-sulfur coal as claimed in claim 1, wherein: the support includes a plurality of crossbeams (3), and mutual staggered connection is latticed between a plurality of crossbeams (3), the both ends of crossbeam (3) are connected with the inner wall of tower body (1) respectively.
4. The flow-through sieve plate tray for improving the ultralow emission desulfurization efficiency of high-sulfur coal as claimed in claim 1, wherein: the liquid level communicating hole (4-1) is provided with an external thread pipe (9) and a pipe hoop (8), and the adjacent flow-through sieve plate modules (2) are connected with the external thread pipe (9) through the pipe hoop (8).
5. The flow-through sieve plate tray for improving the ultralow emission desulfurization efficiency of high-sulfur coal as claimed in claim 1, wherein: the tower body (1) is cylindrical, the flow-through sieve plate module (2) positioned in the middle of the tray is rectangular, and the flow-through sieve plate module (2) positioned at the edge of the tower body (1) is polygonal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121546974.1U CN216024910U (en) | 2021-07-08 | 2021-07-08 | Improve low discharge desulfurization efficiency's of high-sulfur coal percolation sieve tray |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121546974.1U CN216024910U (en) | 2021-07-08 | 2021-07-08 | Improve low discharge desulfurization efficiency's of high-sulfur coal percolation sieve tray |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216024910U true CN216024910U (en) | 2022-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121546974.1U Active CN216024910U (en) | 2021-07-08 | 2021-07-08 | Improve low discharge desulfurization efficiency's of high-sulfur coal percolation sieve tray |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216024910U (en) |
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2021
- 2021-07-08 CN CN202121546974.1U patent/CN216024910U/en active Active
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