CN212818995U - Wet flue gas desulfurization efficiency improving device - Google Patents
Wet flue gas desulfurization efficiency improving device Download PDFInfo
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- CN212818995U CN212818995U CN202020539814.3U CN202020539814U CN212818995U CN 212818995 U CN212818995 U CN 212818995U CN 202020539814 U CN202020539814 U CN 202020539814U CN 212818995 U CN212818995 U CN 212818995U
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Abstract
The utility model discloses a wet desulphurization effect-improving device, which comprises a plurality of rectangular modules and a plurality of outermost modules, wherein the cross section in an absorption tower is divided into a jet flow high-speed area and a jet flow low-speed area, wherein, the jet flow high-speed area and the jet flow low-speed area are divided into grid structures, wherein, one grid corresponds to one rectangular module or one outermost module, the rectangular module and the outermost module are filled in the corresponding grid, a plurality of groups of first vent holes and a plurality of groups of second vent holes are arranged on the rectangular module and the outermost module, and the device can effectively increase the mass transfer efficiency of wet desulphurization, and has the advantages of simple structure, convenient operation, low cost, and good effect.
Description
Technical Field
The utility model belongs to the atmosphere pollution control field relates to a wet flue gas desulfurization carries and imitates device.
Background
With the further improvement of environmental protection standard, the flue gas SO discharged by large-scale thermal power enterprises2The concentration is required to be lower than 35mg/m3In order to enable the flue gas desulfurization system to operate efficiently, the method of increasing the number of spraying layers and improving the spraying density is generally adopted, so that the energy consumption of the slurry circulating pump is high, and the enterprise burden is caused. Traditional tray can increase desulfurization efficiency, but can't separate down liquid and air vent, falls liquid and ventilate for the probability incident, and gas-liquid interaction can only form a small amount of big bubbles, and mass transfer efficiency is poor, therefore the load suitability is poor, and the resistance is high, and efficiency improvement is limited.
Therefore, the development of an efficiency improving technology which can obviously improve the desulfurization efficiency and has good load adaptability is a necessary means for improving the economy of large-scale thermal power enterprises.
Disclosure of Invention
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a wet flue gas desulfurization and carry effect device, the device can effectual increase wet flue gas desulfurization's mass transfer efficiency.
In order to achieve the purpose, the wet desulphurization effect-improving device of the utility model is arranged below a spraying layer in an absorption tower and comprises a plurality of rectangular modules and a plurality of outermost modules, the cross section in the absorption tower is divided into a jet flow high-speed area and a jet flow low-speed area, wherein, the jet flow high-speed area and the jet flow low-speed area are divided into grid structures, wherein, one grid corresponds to one rectangular module or one outermost module, the rectangular module and the outermost module are filled in the corresponding grid, a plurality of groups of first vent holes and a plurality of groups of second vent holes are arranged on the rectangular module and the outermost module, the down-flow holes are arranged between adjacent first vent holes in the same group of first vent holes and between adjacent second vent holes in the same group of second vent holes, first foam valves are arranged in the first vent holes, and second foam valves are arranged in the second vent holes;
the first foam valve and the second foam valve respectively comprise a valve top and a plurality of limiting hooks, wherein the upper ends of the limiting hooks are fixed at the bottom of the valve top, the lower ends of the limiting hooks in the first foam valve are inserted into the first vent hole, and the lower ends of the limiting hooks in the second foam valve are inserted into the second vent hole;
the valve top is of a hemispherical structure, and the end face of the valve top is of a sawtooth structure.
Each group of the first vent holes and each group of the second vent holes are distributed in a staggered manner in sequence.
The number of the limiting hooks is 4-6, and the limiting hooks are distributed in sequence along the circumferential direction.
The aperture of the first vent hole is 25mm-40mm, and the aperture of the second vent hole is 40mm-60 mm.
The aperture of the down-flow hole is 10mm-25 mm.
The ratio of the number of the first vent holes to the number of the second vent holes in the high-velocity region of the jet flow is greater than the ratio of the number of the first vent holes to the number of the second vent holes in the low-velocity region of the jet flow.
The first foam valve is smaller in size than the second foam valve.
The utility model discloses following beneficial effect has:
wet flue gas desulfurization carry and imitate device when concrete operation, the thick liquid that the layer sprayed is in the utility model discloses on form the one deck and hold the liquid layer, spray to the thick liquid that carries the effect device and fall into absorption tower thick liquid pond through the liquid descending hole, the flue gas rises through first air vent and second air vent, the flue gas is dispersed by first foam valve and the second foam valve that has the sawtooth to with hold the liquid layer fully alternately, with form a large amount of micro-bubbles, increase the double-phase mass transfer of gas-liquid then, make the thick liquid fully absorb the SO in the flue gas2And the aim of improving the desulfurization efficiency of the absorption tower is fulfilled.
Drawings
Fig. 1 is a distribution diagram of a middle jet flow high speed area 1 and a jet flow low speed area 2 of the present invention;
fig. 2 is a distribution diagram of the middle rectangular module 3 and the outermost module 4 of the present invention;
fig. 3 is a schematic structural diagram of a rectangular module 3 according to the present invention;
fig. 4 is a schematic structural diagram of the first foam valve 8 of the present invention.
Wherein 1 is a jet flow high-speed area, 2 is a jet flow low-speed area, 3 is a rectangular module, 4 is an outermost module, 5 is a first vent hole, 6 is a second vent hole, 7 is a down-flow hole, 8 is a first foam valve, 9 is a second foam valve, 10 is a valve top, and 11 is a limiting hook.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1 to 4, the wet desulfurization efficiency-improving device of the present invention is disposed below a spray layer in an absorption tower, and comprises a plurality of rectangular modules 3 and a plurality of outermost modules 4, wherein a cross section in the absorption tower is divided into a high-velocity jet zone 1 and a low-velocity jet zone 2, wherein the high-velocity jet zone 1 and the low-velocity jet zone 2 are divided into a grid structure, one grid corresponds to one rectangular module 3 or one outermost module 4, the rectangular module 3 and the outermost module 4 are filled in the corresponding grid, the rectangular module 3 and the outermost module 4 are respectively provided with a plurality of groups of first vent holes 5 and a plurality of groups of second vent holes 6, wherein a plurality of liquid-dropping holes 7 are disposed between adjacent first vent holes 5 in the same group of first vent holes 5 and between adjacent second vent holes 6 in the same group of second vent holes 6, a first foam valve 8 is arranged in the first vent hole 5, and a second foam valve 9 is arranged in the second vent hole 6; the first foam valve 8 and the second foam valve 9 both comprise a valve top 10 and a plurality of limiting hooks 11, wherein the upper ends of the limiting hooks 11 are fixed at the bottom of the valve top 10, the lower ends of the limiting hooks 11 in the first foam valve 8 are inserted into the first vent holes 5, and the lower ends of the limiting hooks 11 in the second foam valve 9 are inserted into the second vent holes 6; the valve top 10 is of a hemispherical structure, and the end face of the valve top 10 is of a sawtooth structure.
Specifically, each group of the first vent holes 5 and each group of the second vent holes 6 are distributed in a staggered manner in sequence; the number of the limiting hooks 11 is 4-6, and the limiting hooks 11 are distributed in sequence along the circumferential direction.
The aperture of the first vent hole 5 is 25mm-40mm, and the aperture of the second vent hole 6 is 40mm-60 mm; the aperture of the down-flow hole 7 is 10mm-25 mm; the size of the first foam valve 8 is smaller than the size of the second foam valve 9.
The utility model discloses a concrete working process does:
the thick liquid that the layer sprayed forms the one deck on carrying imitating the device and holds the liquid layer, because the 7 resistances in down-flow hole are greater than first air vent 5 and second air vent 6, and the flue gas rises through first air vent 5 and second air vent 6, and the thick liquid falls into the absorption tower thick liquid pond through down-flow hole 7, makes the flue gas rise and the thick liquid whereabouts is automatic separately, reduces the resistance.
The flue gas is dispersed by a first foam valve 8 and a second foam valve 9 with sawteeth in the process of rising through a first vent hole 5 and a second vent hole 6, and fully interacts with a liquid holding layer to form a large amount of micro bubbles SO as to increase gas-liquid two-phase mass transfer, SO that the slurry fully absorbs SO in the flue gas2。
The ratio of the number of the first vent holes 5 to the number of the second vent holes 6 in the jet flow high-speed area 1 is larger than the ratio of the number of the first vent holes 5 to the number of the second vent holes 6 in the jet flow low-speed area 2, so that the resistance of the jet flow high-speed area 1 is larger than that of the jet flow low-speed area 2, the effect of balancing a flue gas flow field is achieved, the resistance is reduced more favorably, and the desulfurization efficiency is improved.
Because the first vent hole 5 and the second vent hole 6 are respectively inserted into the first foam valve 8 and the second foam valve 9, when the coal-fired power plant unit runs at a high load, the smoke volume is large, the smoke flow rate is high, the first foam valve 8 and the second foam valve 9 are simultaneously blown up and lifted by smoke and limited by the limiting hook 11, and a gas-liquid interaction mass transfer channel is formed in the first vent hole 5 and the second vent hole 6. When the coal-fired power plant unit operates at low load, the smoke volume is small, the smoke flow rate is low, the smoke cannot be blown up and lifted due to the large weight of the second foam valve 9, the second foam valve 9 covers the second vent hole 6, and only a small amount of smoke can pass through the sawtooth edge; first foam valve 8 can be blown up, the lifting by the flue gas because weight is little, forms the mutual mass transfer passageway of gas-liquid, makes the utility model discloses when different loads, the homoenergetic reaches the abundant mutual mass transfer of gas-liquid with low resistance, improves desulfurization efficiency.
Claims (7)
1. A wet desulphurization effect-improving device is characterized in that the device is arranged below a spraying layer in an absorption tower and comprises a plurality of rectangular modules (3) and a plurality of outermost modules (4), the cross section in the absorption tower is divided into a jet flow high-speed area (1) and a jet flow low-speed area (2), wherein the jet flow high-speed area (1) and the jet flow low-speed area (2) are divided into grid structures, one grid corresponds to one rectangular module (3) or one outermost module (4), the rectangular modules (3) and the outermost modules (4) are filled in the corresponding grids, a plurality of groups of first vent holes (5) and a plurality of groups of second vent holes (6) are respectively arranged on the rectangular modules (3) and the outermost modules (4), wherein liquid-reducing holes (7) are respectively arranged between adjacent first vent holes (5) in the same group of first vent holes (5) and between adjacent second vent holes (6) in the same group of first vent holes (6), a first foam valve (8) is arranged in the first vent hole (5), and a second foam valve (9) is arranged in the second vent hole (6);
the first foam valve (8) and the second foam valve (9) respectively comprise a valve top (10) and a plurality of limiting hooks (11), wherein the upper ends of the limiting hooks (11) are fixed at the bottom of the valve top (10), the lower ends of the limiting hooks (11) in the first foam valve (8) are inserted into the first vent holes (5), and the lower ends of the limiting hooks (11) in the second foam valve (9) are inserted into the second vent holes (6);
the valve top (10) is of a hemispherical structure, and the end face of the valve top (10) is of a sawtooth structure.
2. The wet desulfurization effect-enhancing device according to claim 1, wherein each group of the first ventilation holes (5) and each group of the second ventilation holes (6) are sequentially distributed in a staggered manner.
3. The wet desulphurization efficiency improving device according to claim 1, wherein the number of the limiting hooks (11) is 4-6, and the limiting hooks (11) are distributed in sequence along the circumferential direction.
4. The wet desulphurization effect enhancing device according to claim 1, wherein the aperture of the first vent hole (5) is 25mm-40mm, and the aperture of the second vent hole (6) is 40mm-60 mm.
5. The wet desulphurization efficiency improving apparatus according to claim 4, wherein the diameter of the down-flow holes (7) is 10mm-25 mm.
6. The wet desulfurization effect enhancing apparatus according to claim 4, wherein the ratio of the number of the first ventilation holes (5) to the number of the second ventilation holes (6) in the jet high velocity zone (1) is larger than the ratio of the number of the first ventilation holes (5) to the number of the second ventilation holes (6) in the jet low velocity zone (2).
7. The wet desulfurization effect enhancing apparatus according to claim 1, wherein the size of the first foam valve (8) is smaller than the size of the second foam valve (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020539814.3U CN212818995U (en) | 2020-04-13 | 2020-04-13 | Wet flue gas desulfurization efficiency improving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020539814.3U CN212818995U (en) | 2020-04-13 | 2020-04-13 | Wet flue gas desulfurization efficiency improving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212818995U true CN212818995U (en) | 2021-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020539814.3U Active CN212818995U (en) | 2020-04-13 | 2020-04-13 | Wet flue gas desulfurization efficiency improving device |
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|---|---|
| CN (1) | CN212818995U (en) |
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2020
- 2020-04-13 CN CN202020539814.3U patent/CN212818995U/en active Active
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