CN204233889U - A kind of flue gas desulfurization demister tube-sheet type airflow uniform distribution device - Google Patents
A kind of flue gas desulfurization demister tube-sheet type airflow uniform distribution device Download PDFInfo
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- CN204233889U CN204233889U CN201420640362.2U CN201420640362U CN204233889U CN 204233889 U CN204233889 U CN 204233889U CN 201420640362 U CN201420640362 U CN 201420640362U CN 204233889 U CN204233889 U CN 204233889U
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- uniform distribution
- airflow uniform
- flue gas
- gusset
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- 238000009827 uniform distribution Methods 0.000 title claims abstract description 102
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 239000003546 flue gas Substances 0.000 title claims abstract description 66
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 26
- 230000023556 desulfurization Effects 0.000 title claims abstract description 26
- 239000011148 porous material Substances 0.000 claims abstract description 7
- 239000004925 Acrylic resin Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 229920000178 Acrylic resin Polymers 0.000 claims description 3
- 238000003475 lamination Methods 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 15
- 239000002002 slurry Substances 0.000 abstract description 8
- 239000007787 solid Substances 0.000 abstract description 7
- 239000003595 mist Substances 0.000 abstract description 6
- 239000000428 dust Substances 0.000 abstract description 5
- 230000000903 blocking effect Effects 0.000 description 6
- 239000003517 fume Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000000779 smoke Substances 0.000 description 6
- 230000003009 desulfurizing effect Effects 0.000 description 4
- 229910052602 gypsum Inorganic materials 0.000 description 4
- 239000010440 gypsum Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The utility model discloses a kind of flue gas desulfurization demister tube-sheet type airflow uniform distribution device, comprise gusset, airflow uniform distribution pipe and air-flow uniform board, the surface of gusset is provided with pore and plate hole; Airflow uniform distribution pipe is arranged between gusset with identical level height; Airflow uniform distribution plate is arranged between gusset with identical level height; Thread connecting mode is adopted to fix between airflow uniform distribution pipe and gusset and between airflow uniform distribution plate and gusset; Airflow uniform distribution pipe is arranged at the top of airflow uniform distribution plate.Before flue gas desulfurization demister tube-sheet type airflow uniform distribution device of the present utility model is arranged in mist separator of desulfurization, the flue gas entering mist separator of desulfurization can be made to be uniformly distributed, thus effectively improve the removal efficiency of mist separator of desulfurization to slurries and droplet.Under same flue gas flow rate condition, use tube-sheet type airflow uniform distribution device effectively can improve the demisting efficiency of mist separator of desulfurization, reduce solid dust and the droplet content of absorption tower outlet further, discharge clean flue gas.
Description
Technical field
The utility model relates to environmental technology field, relates to a kind of flue gas desulfurization demister tube-sheet type airflow uniform distribution device particularly, is mainly used in wet method fume desulfurizing system.
Background technology
In wet method fume desulfurizing system, flue gas in desulfurizing tower, after spraying layer fully contacts with absorbent slurry, the SO in flue gas
2absorbed by slurries and remove, fraction slurries is under the effect of air-flow simultaneously, upwards flows with flue gas with the form of droplet, and after demister removes, clean flue gas is exported by absorption tower and discharges.Because the velocity flow profile of flue gas in absorption tower is extremely uneven, when local flue gas flow rate is higher, flue gas carries drop amount will be aggravated; Meanwhile, too high flue gas flow rate also can make demister demisting efficiency reduce, and causes demister to lose efficacy or blocking.Demister lost efficacy or after blocking, adsorption tower smoke resistance will be caused obviously to increase, and units consumption strengthens.Simultaneously, not by droplet that demister effectively removes, can with flue gas through absorption tower outlet discharge, heat exchanger behind absorption tower or flue surfaces form gypsum dirt, descend slowly and lightly after even being discharged by chimney breast at periphery, formed " gypsum rain ", the solid dust pollutant load in fume emission process is significantly raised.
Utility model content
Goal of the invention: for overcoming the deficiencies in the prior art, the utility model provides a kind of flue gas desulfurization demister tube-sheet type airflow uniform distribution device, effectively can solve the problems such as the blocking of absorption tower demisting device, heat exchanger or flue surfaces gyrpseous scale, gypsum rain, meanwhile, the solid dust pollutant load in fume emission process can be reduced.
Technical scheme: for achieving the above object, the utility model provides a kind of flue gas desulfurization demister tube-sheet type airflow uniform distribution device, comprise gusset, airflow uniform distribution pipe and air-flow uniform board, the surface of described gusset is provided with pore and plate hole, is respectively used to airflow uniform distribution pipe described in fixed support and air-flow uniform board; Described airflow uniform distribution pipe is arranged between described gusset with identical level height; Described airflow uniform distribution plate is arranged between described gusset with identical level height; Thread connecting mode is adopted to fix between described airflow uniform distribution pipe and gusset and between airflow uniform distribution plate and gusset; Described airflow uniform distribution pipe is arranged at the top of described airflow uniform distribution plate.Airflow uniform distribution pipe and air-flow uniform board all can reach the effect of airflow uniform distribution, both operation principles are all by changing flue gas circulation path, increase flue gas local circulating resistance, regulate the flow field state of flue gas, make flue gas flow through the flow velocity of demister section relatively uniform.Both are difference, airflow uniform distribution pipe regulates local circulating resistance by adjustable pipe spacing, and airflow uniform distribution plate can regulate local circulating resistance by change distance between plates and angle of inclination, flow of flue gas direction can be changed by regulating angle of inclination simultaneously, uniform flue gas flow rate can be made under the condition of more lower resistance loss.By airflow uniform distribution pipe is fixedly connected with gusset in the mode be threaded with air-flow uniform board, be convenient to dismounting on the one hand, the gap between gap between airflow uniform distribution pipe and airflow uniform distribution plate and angle of inclination can be regulated on the other hand easily, thus the layout of this tube-sheet type air-flow even distributor can be adjusted according to different operating conditions.
Wherein, the space between described pore and between plate hole is 20mm ~ 160mm, and described space distance depends on the size of flue gas flow rate, when flue gas flow rate is large, it is smaller that this space distance should be established, and namely increases pipe/plate density of setting, thus increase smoke flow resistance, flue gas flow rate is reduced; When flue gas flow rate hour, it is larger that this space distance should be established, and namely reduces pipe/plate density of setting, thus reduce smoke flow resistance, makes flue gas flow rate become large, thus make the flue gas flow rate flowing through demister interface in absorption tower relatively uniform.Because the flow velocity in absorption tower is tending towards even, the slurries total amount of carrying in the flue gas upwards flowed reduces, this make flue gas enter mist separator of desulfurization slurries amount reduce, significantly can alleviate the load of demister; Meanwhile, uniform flue gas flow rate, also makes the demisting efficiency of demister significantly promote, and thus, the blocking probability of demister and demister export the amount of solid of carrying to be reduced greatly.
Wherein, in order to versatility and the portability of device, the height of described gusset is 200 ~ 600mm, and this highly also can regulate as required.The thickness of slab of gusset is 10mm ~ 50mm.
The number of described gusset is at least 2, when airflow uniform distribution pipe/plate is oversize, in order to strengthen the stability of airflow uniform distribution pipe and air-flow uniform board further, can increase some gussets wherein and being fixed.
Preferably, described airflow uniform distribution pipe is the pipe of external diameter 40 ~ 150mm, thickness of pipe wall 4 ~ 10mm.
Preferably, described airflow uniform distribution plate is the flat board of width 40mm ~ 240mm, wall thickness 4mm ~ 10mm, and the two ends of described airflow uniform distribution plate are the cylindrical tube with spiral lamination, and this cylindrical tube is connected with plate hole threaded engagement, and cylindrical tube length is 150 ~ 300mm.
According to the flow condition of actual flue gas, described airflow uniform distribution pipe and described airflow uniform distribution plate can adopt multilayer to arrange, preferably, space distance is between layers 20mm ~ 100mm.
Preferably, airflow uniform distribution plate 3 and airflow uniform distribution pipe 2 are apart from the edge 20 ~ 50mm of gusset 1.
Preferably, described gusset, airflow uniform distribution pipe and air-flow uniform board are acrylic resin or strengthen the gusset, airflow uniform distribution pipe and the air-flow uniform board that improve polyacrylic resin material and be made.
In actual applications, first according to the size of flue size design gusset and the length of air-flow uniform board and airflow uniform distribution pipe, flue gas flow rate and velocity flow profile situation in flue is known by analog result, thus determine space distance between airflow uniform distribution plate and between airflow uniform distribution pipe and need the number of plies of airflow uniform distribution plate/pipe that arranges, assembling tube-sheet type airflow uniform distribution device, before being then arranged at the demister in flue by the tube-sheet type airflow uniform distribution device assembled.When operating mode changes, regulated the angle of inclination of gap or uniform board by the gentle stream uniform board of the equal stringing of swirling eddy.
In the spray void tower of wet desulphurization, flue gas from bottom to top flows, the impact that effect of boundary layer and adsorption tower smoke due to limit, absorption tower wall are imported and exported, and causes flue gas to flow in tower very uneven.Before demister after the board-like airflow uniform distribution device of mounting pipe, at flow velocity higher position, reduce pipe, distance between plates, namely increase the layout density of pipe, plate, the resistance of flow of flue gas is increased, and in flow velocity lower, increase pipe, distance between plates, namely reduce the layout density of pipe, plate, reduce smoke flow resistance, make the velocity of flue gas of former High Velocity Area reduce like this, the flue gas flow rate in low flow velocity district increases, thus it is relatively uniform to reach in absorption tower the flue gas flow rate flowing through demister section.Because the flow velocity in absorption tower is tending towards even, the slurries total amount of carrying in the flue gas upwards flowed reduces, and this slurries amount making flue gas enter mist separator of desulfurization reduces, and significantly can alleviate the load of demister; Simultaneously, uniform flue gas flow rate, also the demisting efficiency of demister is made significantly to promote, thus, the blocking probability of demister and demister export the amount of solid of carrying to be reduced greatly, obviously can alleviate the generation of " gypsum rain " phenomenon of wet desulphurization, effectively solve heat exchanger or flue surfaces gyrpseous scale problem, reduce the solid dust pollutant load in fume emission process further.
Beneficial effect: compared with prior art, the utility model uses tube-sheet type airflow uniform distribution device scientifically and rationally, effectively can regulate the velocity flow profile of flue gas in absorption tower, make by the flue gas flow rate of demister section more even, the demisting efficiency of abundant raising demister, final reduction units consumption, reduces the dust content of fume emission, has the significance of energy-saving and emission-reduction.
Accompanying drawing explanation
Fig. 1 is the structural representation of flue gas desulfurization demister tube-sheet type airflow uniform distribution device;
Fig. 2 is the side view of flue gas desulfurization demister tube-sheet type airflow uniform distribution device;
Fig. 3 is the structural representation of the airflow uniform distribution plate of flue gas desulfurization demister tube-sheet type airflow uniform distribution device.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is the schematic diagram of flue gas desulfurization demister tube-sheet type airflow uniform distribution device of the present utility model, this device is used in power plant stack gas desulfurizing tower, before being arranged at demister, distance demister about 400 ~ 1000mm, whole device comprises gusset 1, airflow uniform distribution pipe 2 and air-flow uniform board 3, above-mentioned three kinds of parts are poly-third resin (PP) material, also can be to strengthen to improve acrylic resin (PPHG) material, be all threaded connection and be fixed between three.Between airflow uniform distribution pipe 2 and air-flow uniform board 3 are arranged in parallel in inside 2 pieces of gussets 1 respectively, and airflow uniform distribution pipe 2 and air-flow uniform board 3 are in different level heights respectively, airflow uniform distribution pipe 2 is arranged at the top of airflow uniform distribution plate 3, and the space distance between pore 4 and between plate hole 5 is 50mm (this distance can regulate according to actual flue gas flow rate situation); Distance between airflow uniform distribution pipe 2 layers and airflow uniform distribution plate 3 layers is 30mm.As shown in Figure 3, the angle between airflow uniform distribution plate 3 and horizontal plane realizes by rotating this airflow uniform distribution plate 3.The flat board of the width 100mm of airflow uniform distribution plate 3, wall thickness 8mm, length is 1500mm.The two ends of airflow uniform distribution plate 3 are the cylindrical tube 6 with spiral lamination, and this cylindrical tube 6 is connected with plate hole 5 threaded engagement, and cylindrical tube length is 250mm.Airflow uniform distribution pipe 2 is external diameter
pipe, wall thickness 8mm, length is 1500mm.The two ends of airflow uniform distribution pipe 2 and air-flow uniform board 3 all protrude from the outside 50mm of gusset 1.Gusset 1 is highly 400mm, thickness of slab 15mm.
As shown in Figure 2, airflow uniform distribution plate 3 and airflow uniform distribution pipe 2, apart from edge about the 20 ~ 40mm of gusset 1, are crossed young pathbreaker apart from Edge Distance and are caused airflow uniform distribution plate or airflow uniform distribution pipe to be difficult to fix on gusset, easily damage or come off; Distance Edge Distance cross senior general to cause between two airflow uniform distribution devices distance between plates or tube pitch excessive, be unfavorable for the control of airflow uniform distribution.
In the process that reality uses, design according to absorption tower, the real data measured, adopt flow dynamics analysis software, analog computation goes out gas flowfield distribution situation in absorption tower, determine the size of gusset and the length of air-flow uniform board and airflow uniform distribution pipe further, total principle is at flow velocity higher position, reduce pipe, distance between plates, namely pipe is increased, the layout density of plate, swirling eddy uniform board simultaneously, airflow uniform distribution plate inclination angle is made to become large, thus the resistance of flow of flue gas is increased, and in flow velocity lower, increase pipe, distance between plates, namely pipe is reduced, the layout density of plate, swirling eddy uniform board simultaneously, the inclination angle of airflow uniform distribution plate is diminished, reduce smoke flow resistance, the velocity of flue gas of former High Velocity Area is made to reduce like this, the flue gas flow rate in low flow velocity district increases, thus it is relatively uniform to reach in absorption tower the flue gas flow rate flowing through demister section.The change of tube pitch can by optionally installing or not installing airflow uniform distribution pipe to realize in the pore of correspondence, as shown in Figure 1.
The utility model have employed said structure, the flue gas entering demister can be uniformly distributed, and the demisting efficiency of demister is significantly promoted.Not only reduce the blocking probability of demister, also greatly reduce demister and export the amount of solid of carrying.
The above is only the preferred embodiment of patent of the present invention; be noted that for those skilled in the art; under the prerequisite not departing from patent principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as the protection domain of patent of the present invention.
Claims (9)
1. a flue gas desulfurization demister tube-sheet type airflow uniform distribution device, it is characterized in that, comprise gusset (1), airflow uniform distribution pipe (2) and air-flow uniform board (3), the surface of described gusset (1) is provided with pore (4) and plate hole (5), is respectively used to airflow uniform distribution pipe (2) described in fixed support and air-flow uniform board (3); Described airflow uniform distribution pipe (2) is arranged between described gusset (1) with identical level height; Described airflow uniform distribution plate (3) is arranged between described gusset (1) with identical level height, adopts thread connecting mode to fix between described airflow uniform distribution pipe (2) and gusset (1) and between airflow uniform distribution plate (3) and gusset (1); Described airflow uniform distribution pipe (2) is arranged at the top of described airflow uniform distribution plate (3).
2. flue gas desulfurization demister tube-sheet type airflow uniform distribution device according to claim 1, is characterized in that, the space between described pore (4) and between plate hole (5) is 20mm ~ 160mm.
3. flue gas desulfurization demister tube-sheet type airflow uniform distribution device according to claim 1, is characterized in that, the height of described gusset (1) is 200mm ~ 600mm, and thickness of slab is 10mm ~ 50mm.
4. flue gas desulfurization demister tube-sheet type airflow uniform distribution device according to claim 1, it is characterized in that, the number of described gusset (1) is at least 2.
5. flue gas desulfurization demister tube-sheet type airflow uniform distribution device according to claim 1, is characterized in that, the pipe that described airflow uniform distribution pipe (2) is external diameter 40 ~ 150mm, thickness of pipe wall 4 ~ 10mm.
6. flue gas desulfurization demister tube-sheet type airflow uniform distribution device according to claim 1, it is characterized in that, the flat board that described airflow uniform distribution plate (3) is width 40mm ~ 240mm, wall thickness 4mm ~ 10mm, the two ends of described airflow uniform distribution plate (3) are the cylindrical tube (6) with spiral lamination, this cylindrical tube (6) is connected with plate hole (5) threaded engagement, and cylindrical tube length is 150 ~ 300mm.
7. flue gas desulfurization demister tube-sheet type airflow uniform distribution device according to claim 1, it is characterized in that, described airflow uniform distribution pipe (2) and described airflow uniform distribution plate (3) adopt multilayer to arrange, space distance is between layers 20mm ~ 100mm.
8. flue gas desulfurization demister tube-sheet type airflow uniform distribution device according to claim 1, is characterized in that, the edge 20 ~ 50mm of described airflow uniform distribution pipe (2) and air-flow uniform board (3) distance gusset (1) surrounding.
9. flue gas desulfurization demister tube-sheet type airflow uniform distribution device according to claim 1, it is characterized in that, described gusset (1), airflow uniform distribution pipe (2) and air-flow uniform board (3) are acrylic resin or strengthen the gusset (1), airflow uniform distribution pipe (2) and the air-flow uniform board (3) that improve polyacrylic resin material and be made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420640362.2U CN204233889U (en) | 2014-10-30 | 2014-10-30 | A kind of flue gas desulfurization demister tube-sheet type airflow uniform distribution device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420640362.2U CN204233889U (en) | 2014-10-30 | 2014-10-30 | A kind of flue gas desulfurization demister tube-sheet type airflow uniform distribution device |
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| Publication Number | Publication Date |
|---|---|
| CN204233889U true CN204233889U (en) | 2015-04-01 |
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| CN201420640362.2U Expired - Fee Related CN204233889U (en) | 2014-10-30 | 2014-10-30 | A kind of flue gas desulfurization demister tube-sheet type airflow uniform distribution device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107042048A (en) * | 2017-03-16 | 2017-08-15 | 华南理工大学 | A kind of gravity heat-pipe type defogging method and demister |
-
2014
- 2014-10-30 CN CN201420640362.2U patent/CN204233889U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107042048A (en) * | 2017-03-16 | 2017-08-15 | 华南理工大学 | A kind of gravity heat-pipe type defogging method and demister |
| CN107042048B (en) * | 2017-03-16 | 2023-06-13 | 华南理工大学 | Gravity heat pipe type demisting method and demisting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 |