CN201263964Y - Rotational flow and spray combined desulfurizing device - Google Patents
Rotational flow and spray combined desulfurizing device Download PDFInfo
- Publication number
- CN201263964Y CN201263964Y CNU2008201633317U CN200820163331U CN201263964Y CN 201263964 Y CN201263964 Y CN 201263964Y CN U2008201633317 U CNU2008201633317 U CN U2008201633317U CN 200820163331 U CN200820163331 U CN 200820163331U CN 201263964 Y CN201263964 Y CN 201263964Y
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- Prior art keywords
- tower
- eddy flow
- rotational flow
- spraying layer
- spraying
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- 230000003009 desulfurizing effect Effects 0.000 title claims abstract description 15
- 239000007921 spray Substances 0.000 title claims description 32
- 238000005507 spraying Methods 0.000 claims abstract description 31
- 238000010521 absorption reaction Methods 0.000 claims abstract description 22
- 238000005406 washing Methods 0.000 claims abstract description 8
- 238000006477 desulfuration reaction Methods 0.000 abstract description 27
- 230000023556 desulfurization Effects 0.000 abstract description 24
- 239000000779 smoke Substances 0.000 abstract description 6
- 239000003245 coal Substances 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 16
- 239000003546 flue gas Substances 0.000 description 16
- 239000002002 slurry Substances 0.000 description 14
- 239000007789 gas Substances 0.000 description 10
- 239000007788 liquid Substances 0.000 description 10
- 230000008901 benefit Effects 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model discloses a spraying rotational-flow combined desulfurization device which mainly comprises an absorption tower. The absorption tower is internally provided with a tower bottom, a washing part and a demisting plate from bottom to top, wherein the washing part comprises a spraying layer and a rotational flow plate layer, the rotational flow plate layer is positioned on the spraying layer by sufficiently considering the difference of gas flowfields inside a spraying tower and a rotational flow plate tower, the desulfurization serosity is respectively delivered to the spraying layer and the rotational flow plate layer through circulating pumps which are independent of each other, and the smoke gas enters a desulfurizing tower and is purified after being desulfurized by the spraying layer firstly and then by the rotational flow plate layer. The utility model is mainly used for the stove smoke gas treatment of a coal burning boiler, and can not only lower the energy consumption and reduce the investment but also is greatly adapt to the fluctuation of boiler load and the change of coal kinds under the condition that higher desulfurization efficiency is ensured.
Description
Technical field
The utility model belongs to resource and environment technical field prevention and control of air pollution direction, is specifically related to a kind of flue gas desulfur device.
Background technology
Along with the raising of people to sulfur dioxide and dust pollution understanding, strict emission control standards has all been carried out in various places, and various absorption plants all are applied on the desulfurizer.
The wet desulphurization device that extensively adopts mainly contains spray column, rotating stream tray scrubber, bubble tower, venturi etc. at present, perhaps adopts the form of combined column further to improve the operating efficiency of desulfurization, as venturi+rotating stream tray scrubber combination, spray+tray combination.
About the document and the patent that adopt the flue gas desulfur device that rotating stream tray scrubber and spray column make up actually rare, Zhang Guangxin (design of 75t/h boiler flue gas desulfurization device and application. metallurgical power, 2003,03:637-39,42) 75t/h of steam power plant of Shandong Aluminium Industrial Corp boiler water film dust-remover is sprayed-rotating stream tray scrubber desulphurizing and dust-removing integral transformation research, make it under the situation that keeps original water dust scrubber characteristics and function, increase its desulfurizing function, improve efficiency of dust collection.Technological process is: flue gas is after spray section rough dusting, desulfurization, enter rotating stream tray scrubber and further finish the desulfurization and dedusting task, in spray section, gas-liquid following current contact, gas-liquid counter current contact in the rotating stream tray scrubber, thus under lower pressure drop with the most of flue dust of flue gas, SO
2Remove.Mention spray section and rotating stream tray scrubber in the document not in same absorption tower, its function is equivalent to venturi, mainly plays the dedusting effect.
The general desulfurization method of limestone-gypsum of introducing that all adopts of thermoelectricity desulfurization, used absorption plant is spray column.The advantage of spray column be almost in all absorption plants resistance minimum, can adapt to different boiler loads, but need adopt higher liquid-gas ratio.The advantage of rotating stream tray scrubber is can realize high efficiency under low liquid-gas ratio and lower resistance, but when boiler load is low, can not guarantee desulfuration efficiency.
Summary of the invention
The utility model provides a kind of combined desulfurizing device of rotational flow and spray, can reduce the internal circulating load of slurries under the situation that guarantees desulfuration efficiency, cuts down the consumption of energy, and reduces investment simultaneously.
A kind of rotational flow and spray combined desulfurizing device, comprise the absorption tower, be provided with the tower still in the described absorption tower from bottom to up successively, wash parts, demist plate, washing components is made up of spraying layer that plurality of nozzles is installed on the pipeline and eddy flow flaggy, and the eddy flow flaggy is positioned at the spraying layer top.
Eddy flow flaggy and spraying layer can be provided with several layers according to project situation.
The nozzle of spraying layer is set to atomizer, and droplet is risen with air-flow, and further desulfurization on the eddy flow flaggy improves desulfuration efficiency.
The optimum large-sized ejection-type eddy flow of the big flux plate that adopts of described eddy flow flaggy, ejection-type eddy flow plate comprises blind plate and the blade that is close to blind plate, and the blind plate diameter is the tower diameter of 1/3-2/3, and the angle [alpha] of blade lean face and horizontal plane is 25-45 °.The big large-sized ejection-type eddy flow of flux plate can guarantee to realize high desulfurization rate under the condition of lower resistance reduction liquid-gas ratio, can prevent simultaneously that column plate from stopping up, suitable blade angle guarantees fully atomizing, forms good atomizing uptake zone, thereby guarantees high desulfurization efficiency.
The required desulfurization slurry of eddy flow flaggy and spraying layer is extracted from the tower still by circulating pump independently respectively and provides, and can control the desulfurization slurry that arrives eddy flow flaggy and spraying layer respectively.Be provided with the side agitator in the tower still, guarantee that desulfurization slurry mixes.
Desulfurization slurry is transported to spraying layer and eddy flow flaggy respectively by circulating pump.Flue gas enters desulfurizing tower from flue entrance, contact behind spray washing with spray liquid is reverse, spiral rises under the guide effect of eddy flow plate again, and on the eddy flow plate, contact with the reverse convection current of doctor solution, doctor solution is atomized into the drop of diameter 0.1-1.0mm, forms good atomizing uptake zone, the abundant haptoreaction of flue gas and doctor solution, through being purified after spray and the desulfurization of eddy flow plate secondary, after demist, discharge again.
The utility model device adopts the combination of spray+eddy flow plate, adopt spraying layer below, adopt the eddy flow plate above, taken into full account the difference of the interior gas flowfield of tower of spray column and rotating stream tray scrubber, the distribution of spray and eddy flow two kinds of flow field stacks back flue gas and absorption liquid is more even, helps the stable of efficient.The advantage of spraying layer is that it has less resistance, the advantage of eddy flow flaggy is to be that liquid-gas ratio is less, therefore the resistance of this device and liquid-gas ratio are between rotating stream tray scrubber and spray column, than independent rotating stream tray scrubber or spray column, not only reduce energy consumption, and had wideer opereating specification.The feed liquor of spray and eddy flow plate is supplied with by separate pump, more can adapt to the fluctuation of boiler load and the variation of coal, is absorbed as the master with the eddy flow plate when sulfur content of coal is high, is absorbed as the master with spray when boiler load is low.
Description of drawings
Fig. 1 is a kind of apparatus structure schematic diagram of the present utility model.
The specific embodiment
As shown in Figure 1, a kind of rotational flow and spray combined desulfurizing device mainly comprises absorption tower 1, is provided with in the absorption tower 1 and washes parts 19 and demist plate 12, washes parts 19 and is made up of the spraying layer 10 of lower floor and the eddy flow flaggy 9 on upper strata.The eddy flow flaggy is selected ejection-type eddy flow plate for use, and the blind plate diameter is 1/3 tower diameter, and the angle of blade lean face and horizontal plane is 25 °
Tower still 2 at the bottom of the absorption tower is provided with side agitator 3, spraying layer slurries output pipe 17, eddy flow flaggy slurries output pipe 18 and slurries discharge line 15.
During use, sulfur-containing smoke gas enters absorption tower 1 by gas approach 13, through drawing after smoke stack emission from top exhaust pass 14 after washing components 19 desulfurization, 12 demists of demist plate.The desulfurization absorption liquid of 1 bottom, absorption tower is controlled by tank level control system.The desulfurization absorption liquid is supplied with spraying layer 10 and eddy flow flaggy 9 by circulating pump independently respectively, one road absorption liquid is circulated on the spraying layer 10 by spraying layer circulation line 8 by spraying layer circulating pump 6 and is used for desulfurization, and another road absorption liquid is circulated on the eddy flow flaggy 9 by eddy flow flaggy circulation line 7 by eddy flow flaggy circulating pump 5 and is used for desulfurization.Reacted doctor solution is discharged by slurries discharge line 15 by slurries excavationg pump 4 and is carried out oxidation or subsequent treatment.
Application examples 1:
1 130t/h coal-burning boiler, exhaust gas volumn 210000m
3/ h, flue-gas temperature is 150 ℃, inlet flue gas SO
2Concentration 4000mg/Nm
3, during the operation of the utility model device, washing components is that lower part is provided with 2 layers of spraying layers, and upper part is provided with 2 layers of eddy flow plates, and desulfurizing agent is a lime, absorption liquid and flue gas ratio L/G=8.0L/m
3, flue gas is 1000Pa by the pressure drop of desulfurizer, after the whole device operation, smoke desulfurization efficiency reaches more than 95%.Compare with the spray column of 4 layers of spray, can save the electric weight of 79.2 ten thousand kwh every year.
Application examples 2:
1 220t/h coal-burning boiler, exhaust gas volumn 420000m
3/ h, flue-gas temperature is 130 ℃, inlet flue gas SO
2Concentration 2000mg/Nm
3, during the operation of the utility model device, the washing components lower part is provided with 1 layer of eddy flow plate, and upper part is provided with 2 layers of spraying layers, and desulfurizing agent is a lime, absorption liquid and flue gas ratio L/G=6.0L/m
3, flue gas is 800Pa by the pressure drop of desulfurizer, after the whole device operation, smoke desulfurization efficiency reaches more than 90%.Compare with the spray column of 3 layers of spray, can save the electric weight of 61.2 ten thousand kwh every year.
Claims (5)
1. rotational flow and spray combined desulfurizing device, comprise absorption tower (1), be provided with tower still (2) in the described absorption tower (1) from bottom to up successively, wash parts (19), demist plate (12), it is characterized in that: washing components (19) is made up of spraying layer that plurality of nozzles is installed on the pipeline (10) and eddy flow flaggy (9), and eddy flow flaggy (9) is positioned at spraying layer (10) top; Described eddy flow flaggy (10) adopts ejection-type eddy flow plate, and ejection-type eddy flow plate comprises blind plate and the blade that is close to blind plate, and the blind plate diameter is the tower diameter of 1/3-2/3, and the angle [alpha] of blade lean face and horizontal plane is 25-45 °.
2. rotational flow and spray combined desulfurizing device as claimed in claim 1 is characterized in that: described nozzle is an atomizer.
3. rotational flow and spray combined desulfurizing device as claimed in claim 1 is characterized in that: described eddy flow flaggy (9) and spraying layer (10) have several layers.
4. rotational flow and spray combined desulfurizing device as claimed in claim 1 is characterized in that: described eddy flow flaggy (9) and spraying layer (10) are communicated with tower still (2) pipeline by circulating pump independently respectively.
5. rotational flow and spray combined desulfurizing device as claimed in claim 1 is characterized in that: be provided with side agitator (3) in the described tower still (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201633317U CN201263964Y (en) | 2008-08-28 | 2008-08-28 | Rotational flow and spray combined desulfurizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201633317U CN201263964Y (en) | 2008-08-28 | 2008-08-28 | Rotational flow and spray combined desulfurizing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201263964Y true CN201263964Y (en) | 2009-07-01 |
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ID=40830310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201633317U Expired - Lifetime CN201263964Y (en) | 2008-08-28 | 2008-08-28 | Rotational flow and spray combined desulfurizing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201263964Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101342455B (en) * | 2008-08-28 | 2011-05-11 | 浙江天蓝环保技术有限公司 | Rotational flow and spray combined desulfurizing device |
| CN102357335A (en) * | 2011-10-14 | 2012-02-22 | 华南理工大学 | Tangent circle spiral spraying wet method smoke sulfur removal device |
| CN107952343A (en) * | 2017-11-24 | 2018-04-24 | 赵扬 | A kind of liquid gas opposite convection type desulfurizing tower twice back and forth |
| CN109453637A (en) * | 2018-12-03 | 2019-03-12 | 湖州浙宝钙业科技股份有限公司 | Spray desulfurizer |
-
2008
- 2008-08-28 CN CNU2008201633317U patent/CN201263964Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101342455B (en) * | 2008-08-28 | 2011-05-11 | 浙江天蓝环保技术有限公司 | Rotational flow and spray combined desulfurizing device |
| CN102357335A (en) * | 2011-10-14 | 2012-02-22 | 华南理工大学 | Tangent circle spiral spraying wet method smoke sulfur removal device |
| CN107952343A (en) * | 2017-11-24 | 2018-04-24 | 赵扬 | A kind of liquid gas opposite convection type desulfurizing tower twice back and forth |
| CN109453637A (en) * | 2018-12-03 | 2019-03-12 | 湖州浙宝钙业科技股份有限公司 | Spray desulfurizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090701 Effective date of abandoning: 20080828 |