CN203484045U - Absorption tower for wet exhaust-gas desulphurization - Google Patents
Absorption tower for wet exhaust-gas desulphurization Download PDFInfo
- Publication number
- CN203484045U CN203484045U CN201320559460.9U CN201320559460U CN203484045U CN 203484045 U CN203484045 U CN 203484045U CN 201320559460 U CN201320559460 U CN 201320559460U CN 203484045 U CN203484045 U CN 203484045U
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- China
- Prior art keywords
- absorption tower
- ripple plate
- slurries
- liquid level
- tower
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 57
- 230000001629 suppression Effects 0.000 claims abstract description 14
- 239000002002 slurry Substances 0.000 claims description 38
- 239000007788 liquid Substances 0.000 claims description 35
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 24
- 239000003546 flue gas Substances 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 8
- 210000004911 serous fluid Anatomy 0.000 abstract 3
- 239000007789 gas Substances 0.000 description 11
- 238000003825 pressing Methods 0.000 description 6
- 238000005507 spraying Methods 0.000 description 6
- 238000006477 desulfuration reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003517 fume Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 230000003009 desulfurizing effect Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000003020 moisturizing effect Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model relates to an absorption tower for wet exhaust-gas desulphurization. The absorption tower is mainly and structurally characterized in that a tower body is provided with an air inlet which is inclined downwards, at least three wave suppression plates are arranged inside the tower body, the wave suppression plates are sequentially distributed in the airflow direction of inlet air at different intervals. After a serous fluid wave suppression device is applied to the absorption tower, the fluctuation amplitude of serous fluid can be greatly reduced, exhaust gas entering the absorption tower can be re-allocated, the overflow of the serous fluid can be reduced, and the repairing workload also can be reduced once for all.
Description
Technical field
The utility model relates to a kind of for wet method fume desulfurizing system (WFGD) or similar field, and a kind of decrease uptake tower slurries fluctuation, improves the equally distributed device of inlet flue gas.
Background technology
Using fire coal and generate electricity as main fuel in thermal power plant, due to coal directly burning discharge a large amount of SO2, cause air environmental pollution.Wet process of FGD is the most ripe at present, controls the most effective approach of the SO2 of thermal power plant discharge.In wet method fume desulfurizing system, absorption tower is one of them visual plant.Obtain good desulfurized effect, just must make flue gas fully effectively contact with slurries, the flow regime of inlet flue gas of therefore controlling well in desulphurization system is most important concerning improving desulfuration efficiency.
Conventional its import cross section of absorption tower is rectangle at present, and downward-sloping certain angle, and at slurries upper surface, without wave suppression device, this structure exists following shortcomings:
Flue gas rushes at liquid level with higher flow velocity (about 12m/s), and slurries liquid level can form larger wave, referring to Fig. 5.Now can form a false liquid level, forming liquid level gauge after false liquid level can be to the liquid level data making mistake, and dcs (DCS) just can be sent wrong increase moisturizing or reduce the erroneous decision of moisturizing;
Liquid level produces after fluctuation, and overfall can increase overflow probability, affects site environment;
Because air-flow is gas column form in rectangular air inlet, there is the flow behavior that center is strong, edge is weak, add overdraught and enter into not process shunting in absorption tower from air inlet, so flue gas can not get good diffusion, reduction desulfuration efficiency in absorption tower;
In porch, absorption tower or when orlop spraying layer breaks down, must etc. emptying slurries, cleaning could be overhauled behind absorption tower, the duration is longer.
Summary of the invention
technical problem:technical problem to be solved in the utility model is for above-mentioned the deficiencies in the prior art, and a kind of wave suppression device of absorption tower is provided.Use this device to occur larger fluctuation by decrease uptake tower slurries, make inlet flue gas distribute again in absorber simultaneously, and can the in the situation that of emptying slurries not, to absorption tower, overhaul while breaking down on absorption tower.
technical scheme:
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of absorption tower for wet process of FGD, comprise tower body and be positioned at the mouth that enters on tower body, the described mouth that enters is tilted to down, in described tower body, be provided with absorption slurries, it is characterized in that: in described tower body, be also provided with the slurries wave suppression device that inlet flue gas is distributed again, but this slurries wave suppression device comprises ripple plate and bracing means thereof, described press down ripple plate be at least three and successively the parallel of non-equidistance be distributed on the air intake airflow direction of mouth flue gas, described ripple plate place plane and the horizontal plane a that has angle that presses down, this angle a is 65 degree～85 degree.
The described sheet number that presses down ripple plate is: n=0.25*D, and first interval S of inner edge 1=D/ (2*n+1), spacing difference x=3*S1/n, wherein D is absorption tower diameter.
The described ripple plate that presses down is arranged in normal liquid level place absorption tower in, and half that presses down ripple plate is under liquid level, but second half of ripple plate is in liquid level.
It is described that to enter mouth cross section be rectangle.
The utility model absorption tower enter the downward-sloping certain angle of mouth, in tower body, be provided with at least three and press down ripple plate, press down ripple plate and be arranged in normal liquid level place in absorption tower, and be in tilted layout, its half under liquid level, half is in liquid level, every is pressed down ripple plate and welds with absorption tower wall, form certain rigidity, but between ripple plate, spacing is according to non-equidistant arrangements of factor such as exhaust gas volumn, slurries amount, flow fields.
beneficial effect:
1. can there is larger fluctuation by decrease uptake tower slurries, be convenient to DCS and accurately control the required liquid level in absorption tower.Absorption tower slurries, because of the effect of stirring and oxidation, can form a large amount of bubbles on liquid level, and inlet flue gas rushes at absorption tower slurries liquid level with certain angle of inclination, so absorption tower slurries liquid level just can produce very large fluctuation, continuous crest and the trough changing of formation.Now, if liquid level gauge is arranged on crest side, at liquid level of slurry during far below normal liquid level, liquid level gauge just can be reported to the police, DCS accepts just to reduce rate of water make-up after instruction, reduces the washing time of demister, just can form the local obstruction of demister, form the harm such as gypsum rain; On the contrary, if liquid level gauge is arranged on trough side, at liquid level of slurry, during higher than normal liquid level, liquid level gauge can not reported to the police, just DCS accepts to increase rate of water make-up after instruction, increases the washing time of demister, just can increase energy consumption.Increase to press down after ripple plate, whole slurries liquid level is divided into several unit, in each unit, still can form certain fluctuation, but presses down ripple plate and compare with not arranging, and amplitude significantly reduces (do not install while pressing down ripple plate, smoke distribution level fluctuation is shown in accompanying drawing 5).
2. make import flue gas again be uniformly distributed in absorption tower, increase the utilization rate of spraying layer.Do not arrange while pressing down ripple plate, flue gas rushes at away from up along wallboard after the wallboard of entrance side chance absorption tower, and the flue gas that spraying layer passes through away from entrance side is more, nearly entrance side flue gas is less, spraying layer utilization rate is low, increases and presses down after ripple plate, presses down ripple plate hight in slurries liquid level, flue gas is just divided into several strands, but clash into up after ripple plate, but by arranging reasonably ripple plate quantity and angle of inclination, flue gas just can well be cut apart, by spraying layer, increase the utilization rate of absorption nozzle more equably.
3. in middle and lower part, absorption tower, increased fixed bed, when absorption tower lower floor spray or absorption tower entrance is anticorrosion etc. while breaking down, not in the situation of emptying slurries as the strong point of scaffold, absorption tower is overhauled, this point is most important for the unbypassed unit of current basic employing.Because absorption tower entrance belongs to the section of colding and heat succeed each other, this section of variations in temperature is larger, and local flue gas flow rate is higher, absorption tower is washed away seriously, so this section of absorption tower the most easily go wrong, and generally, inside, absorption tower does not all arrange and presses down ripple plate, when breaking down, necessary emptying slurries, have cleared up on the base plate of Hou Cong absorption tower, absorption tower cripple have been installed, this position is overhauled, thus, the repair time is longer, and slurries waste is serious.Install and press down after ripple plate, just without emptying slurries, only need suitably to reduce liquid level of slurry, using and press down ripple plate as fixed bed, cripple is installed, both saved the repair time like this, also protected existing slurries simultaneously.
4. reduce the probability that occurs slurries overflow, guarantee the attractive in appearance of site environment.Install to press down after ripple plate, reduce slurries fluctuating range, thereby reduced the probability that overflow appears in slurries, will make absorption tower zone environment be greatly improved.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further illustrated:
Fig. 1 is the structural representation of absorption tower of the present utility model wave suppression device.
Fig. 2 is the top view of Fig. 1.
Fig. 3 install to press down after ripple plate inlet flue gas air-flow distribution schematic diagram again.
Fig. 4 installs to press down ripple plate rear slurry fluctuation schematic diagram.
Fig. 5 is existing absorption tower liquid fluctuating schematic diagram.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, receipts tower slurries wave suppression device technical scheme of the present utility model, operation principle and advantage are further described.
As shown in Figure 1, Figure 2, Figure 3 shows, absorption tower described in the utility model slurries wave suppression device, its structure mainly comprises: on tower body 1, being provided with cross section is rectangle, and the gas approach 2 of downward-sloping certain angle, is provided with at least three and presses down ripple plate in tower body 1, in the present embodiment, after but the sheet number of ripple plate calculates and rounds according to n=0.25*D, be 3, be respectively and press down ripple plate 31,32,33, D is absorption tower diameter.On the air intake airflow direction that is distributed in gas approach 2 that three are pressed down ripple plate non-equidistance, in face of the first of air inlet, pressing down ripple plate 31 is S1 with the spacing of tower body, wherein S1=D/ (2*n+1); Second is pressed down ripple plate 32 is S2 with the spacing that first presses down ripple plate 31, and S2=S1+x; The 3rd is pressed down ripple plate 33 with second but the spacing of ripple plate 32 is S3, and S3=S2+x, wherein x=3*S1/n; .
In the present embodiment, consider the rigidity of structure, pressing down ripple plate can form box beam structure with its reinforcing section.
The operation principle of the slurries wave suppression device of said structure is: when pending flue gas is from gas approach 2 is introduced into tower body 1, air-flow can move ahead along the air intake direction of gas approach 2, along with moving ahead of air-flow, part air-flow is pressed down ripple plate by first and dams, trapped flue gas presses down under the effect of 31 guiding of ripple plate and tower body 1 upper area negative pressure at first, rising, remaining air-flow continues to move ahead along the air intake airflow direction of gas approach 2, until partial fume and second press down ripple plate, meet and dammed, trapped partial fume is under second effect that presses down 32 guiding of ripple plate and tower body 1 upper area negative pressure, rising, remaining flue gas then presses down ripple plate 33 by the 3rd, directed rear slowly up, remains flue gas and be absorbed tower wallboard and dam and guide up after Jing San dams in road.So far, the exhaust gas volumn that enters into tower body from gas approach 2 has obtained good diffusion, even, the orderly absorption tower spraying layer that passes through, thus obtain good desulfuration efficiency.Meanwhile, slurries fluctuation is because being subject to pressing down ripple plate 31,32,33 stop, cannot form larger amplitude fluctuation, has increased the relative precision of liquid level gauge 4 measurement liquid levels, reduce the overflow probability of overfall 5, occurring in the fault of absorption tower, suitably reducing after liquid level, to press down ripple plate 31,32,33 as fixed support point, and scaffold is installed, and absorption tower is overhauled.In actual use, pressing down angle of inclination, height and the quantity of ripple plate can determine by following mode: every but the flow area that ripple plate dams is equivalent to N/mono-of the whole air intake captured area of gas approach 2, wherein N presses down ripple plate quantity in tower body 1, presses down the quantity of ripple plate and can determine according to the actual service conditions such as angle of inclination of the slurries amount on absorption tower, intake, gas approach 2.
From the above mentioned, used after this practical slurries wave suppression device in absorption tower, the flue gas that can make to enter in absorption tower evenly spreads, reduces overflow, convenient maintenance, thereby can greatly improve desulfuration efficiency, beautifies the environment.
Claims (4)
1. the absorption tower for wet process of FGD, comprise tower body and be positioned at the mouth that enters on tower body, the described mouth that enters is tilted to down, in described tower body, be provided with absorption slurries, it is characterized in that: in described tower body, be also provided with the slurries wave suppression device that inlet flue gas is distributed again, but this slurries wave suppression device comprises ripple plate and bracing means thereof, described press down ripple plate be at least three and successively the parallel of non-equidistance be distributed on the air intake airflow direction of mouth flue gas, described ripple plate place plane and the horizontal plane a that has angle that presses down, this angle a is 65 degree～85 degree.
2. the absorption tower for wet process of FGD according to claim 1, is characterized in that: the described sheet number that presses down ripple plate is: n=0.25*D, and first interval S of inner edge 1=D/ (2*n+1), spacing difference x=3*S1/n, wherein D is absorption tower diameter.
3. the absorption tower for wet process of FGD according to claim 1, is characterized in that: the described ripple plate that presses down is arranged in normal liquid level place absorption tower in, and half that presses down ripple plate is under liquid level, but second half of ripple plate is in liquid level.
4. the absorption tower for wet process of FGD according to claim 1, is characterized in that: described in to enter mouth cross section be rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320559460.9U CN203484045U (en) | 2013-09-10 | 2013-09-10 | Absorption tower for wet exhaust-gas desulphurization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320559460.9U CN203484045U (en) | 2013-09-10 | 2013-09-10 | Absorption tower for wet exhaust-gas desulphurization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203484045U true CN203484045U (en) | 2014-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320559460.9U Expired - Fee Related CN203484045U (en) | 2013-09-10 | 2013-09-10 | Absorption tower for wet exhaust-gas desulphurization |
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| Country | Link |
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| CN (1) | CN203484045U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108917833A (en) * | 2018-06-27 | 2018-11-30 | 华电电力科学研究院有限公司 | A kind of wet desulfuration tower slurries overflow remote supervision system and its monitoring method |
-
2013
- 2013-09-10 CN CN201320559460.9U patent/CN203484045U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108917833A (en) * | 2018-06-27 | 2018-11-30 | 华电电力科学研究院有限公司 | A kind of wet desulfuration tower slurries overflow remote supervision system and its monitoring method |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140319 |