CN205461680U - Desulfuration and dust removal device - Google Patents
Desulfuration and dust removal device Download PDFInfo
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- CN205461680U CN205461680U CN201620137960.7U CN201620137960U CN205461680U CN 205461680 U CN205461680 U CN 205461680U CN 201620137960 U CN201620137960 U CN 201620137960U CN 205461680 U CN205461680 U CN 205461680U
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- tower
- partition wall
- scrubbing tower
- rhombus
- extraction device
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Abstract
The utility model provides a desulfuration and dust removal device, has connected gradually neutralization reactor, aeration tank, middle pond, whirl concentrator and circulating water pond including the washing absorption tower behind the washing absorption tower, the washing absorption tower is constituteed by the scrubbing tower and through king -tower and the secondary tower of connecting of passing a bridge, the scrubbing tower top is equipped with the flue gas entry and sprays atomizing system, be equipped with the preceding partition wall and back partition wall of at least a set of interval arrangement in the scrubbing tower, the bottom of preceding partition wall is higher than the support column of back partition wall, be equipped with rhombus pressure boost post between scrubbing tower lateral wall, preceding partition wall and the back partition wall, the scrubbing tower intussuseption is filled with washing water, one side of scrubbing tower is equipped with the exhanst gas outlet that communicates with the king -tower. This desulfuration and dust removal device's dust removal desulfurization is efficient, equipment long service life, consumption that duan shui is absorbed in its neutral washing has reduced more than 20%, and its to the dust removal efficiency of flue gas up to more than 85%, the desulfurization degree is up to more than 85%, desulfurization dust removal cost reduction that the flue gas was handled more than 20%. The area on washing absorption tower reduces more than 20%, has highly reduced more than 42%.
Description
Technical field
This utility model relates to a kind of flue gas processing device, especially relates to a kind of desulfation dust-extraction device for processing boiler smoke.
Background technology
Boiler fume desulfurizing method uses wet dedusting desulfurization mostly at present.
Traditional wet desulfurizing process, substantially utilizes alkalescence desulfurizing agent first by the SO in flue gas in reaction unit (mixing, washing facility)2Neutralize, make SO2Deviate from from flue gas and enter in recirculated water in a salt form, carry out solid-liquor separation the most again, reach desulfurization purpose, make flue gas be purified.The subject matter that this technique exists: one is that alkaline matter consumes greatly, and the operating cost of processing means is high, and bed drain purge is big, easily blocks pipeline；Two is in actual applications, management difficulty is big, it is difficult to add alkalescence desulfurizing agent in time, when water circulates in a device, acidity is continuously increased, pH value constantly reduces even reduces to 1, desulfuration efficiency constantly declines, and makes acidic circulation water that equipment and water pump pipeline etc. are caused heavy corrosion, causes device damage not use.
Secondly, CN 102151480 A discloses a kind of feeding by boiler smoke in conventional wash absorption tower with neutral water washing absorption SO2, re-absorption SO2Acid water be neutralized, then carry out solid-liquor separation.But the boiler flue gas desulfurization device disclosed in this patent, including washing absorption tower, is connected with neutralization reactor, Aeration tank, intermediate pool, eddy flow concentrator, circulating water pool in turn after washing absorption tower；Washing absorption tower is made up of the venturi shower being sequentially connected with, spiral scrubber, king-tower, secondary tower, wherein the smoke outlet tube of venturi shower connects with spiral scrubber, the smoke outlet tube of spiral scrubber connects with the bottom of king-tower, the flue at king-tower top connects with secondary tower, the drain pipe of spiral scrubber, king-tower and secondary tower is connected with neutralization reactor, and circulating water pool is connected with venturi spray system, spiral scrubber spray system, the water inlet of king-tower spray system by water pipe again.Cleaning dust and the desulfurized effect of the washing absorption tower of this boiler flue gas desulfurization device are relatively poor, and the desulfurization and dedusting difficulty that result in follow up device increases, and the water consumption of equipment is higher.
Utility model content
The technical problems to be solved in the utility model is: overcome the deficiencies in the prior art, it is provided that a kind of simple in construction, the desulfation dust-extraction device that desulfurization dust-removing efficiency is high, treatment quantity is big.
This utility model solves its technical problem and be the technical scheme is that a kind of desulfation dust-extraction device, including washing absorption tower, is connected with neutralization reactor, Aeration tank, intermediate pool, eddy flow concentrator and circulating water pool after washing absorption tower in turn；Described washing absorption tower is made up of scrubbing tower and the king-tower and the secondary tower that are connected by gap bridge；Described scrubbing tower top is provided with smoke inlet and spray atomizing system；The spaced front partition wall of least one set and rear partition wall it is provided with in described scrubbing tower, preferably 1 ~ 4 group；The bottom of described front partition wall is higher than the support column of rear partition wall；Rhombus supercharging post it is provided with between described scrubbing tower sidewall, front partition wall and rear partition wall；It is filled with washings in described scrubbing tower；The side of described scrubbing tower is provided with the exhanst gas outlet connected with king-tower.
Further, the quantity of described rhombus supercharging post is 1 ~ 3 group.
Further, described rhombus supercharging post is made up of the rhombus column of at least 2 spacing distance≤10cm, makes flue gas pass through the speed >=35m/s of rhombus supercharging post throat；Described rhombus column is installed in scrubbing tower by the way of its diagonal is vertical with wash tower bottoms, it is preferable that the side of rhombus column and scrubbing tower sidewall are 45 ° of installations.
Further, it is spaced apart 6 ~ 9cm between described rhombus supercharging post neighboring diamonds post.
Further, between the upper liquid level of described washings is bottom rear partition wall support column and front partition wall, gas and water piece-rate system bottom washings, it is provided with.
Further, described scrubbing tower is provided with tube for removing ash near the side of smoke inlet, and its relative side offers ash hole, and ash hole is provided with water seal arrangement.
Further, being provided with spray equipment in described king-tower, spray equipment is positioned at the top of smoke inlet.
Further, described secondary tower middle and upper part is provided with spiral dewaterer.
Further, described eddy flow concentrator is made up of the second cyclone connected.
Traditional wet desulfurizing process neutral and alkali material consumption is big, is because coal and the most not only produces the SO consuming alkali2, also produce substantial amounts of CO2Consume alkali equally, and consume alkali number and be greater than SO2, in desulphurization reaction, calcium sulfite, calcium sulfate and the calcium carbonate of generation are all insoluble in water, and forming precipitate will separate from doctor solution (recirculated water), so causing calcium hydroxide consumption many, bed drain purge is big.
This utility model one desulfation dust-extraction device, utilize neutral detergent water different with the degree of absorption of sulfur dioxide to the carbon dioxide in flue gas, i.e. carbon dioxide and the sulfur dioxide different solubility in water, sulfur dioxide is removed, by using rhombus supercharging post and spray atomizing system to combine in washing absorption section, accelerate the mixing between flue gas and water smoke, and then improve dust and the clearance of sulfur dioxide in flue gas, reduce the water consumption of washing absorption tower, reduce the operating cost of flue gas ash removal.
After being washed by neutral water again, carbon dioxide and sulfur dioxide being only absorbed by the water in various degree, then with alkali liquor, the acid generated is neutralized, finally the calcium salt generated is carried out oxidizing and crystallizing, obtain Gypsum Fibrosum.Gypsum Fibrosum is transported outward, can be as raw material of industry etc..
Due to the main sulfur dioxide absorption of neutral detergent water, the alkaline matter used in neutralization step greatly reduces, and the acid water discharged from washing absorption tower does not include neutralizing sulphite and the sulfate that reaction generates, decrease blocking pipeline and probability, at special neutralization reactor, the water containing sulphur emissions is neutralized more convenient to operate, is easily controlled.
The beneficial effect of a kind of desulfation dust-extraction device of this utility model: this desulfation dust-extraction device uses neutral water sulfur dioxide absorption (neutral detergent absorbs-neutralize desulfurization) to process technique, in the case of not increasing equipment investment, dust-removal and desulfurizing efficiency is high, effective (dust removal efficiency >=99.8%, dust concentration ＜ 50mg/m；Desulfurization degree >=99.0%, SO2＜ 200mg/m), flue gas lingemann blackness I grade), desulfurization and dedusting expense low (sulfur dioxide removal expense≤0.25 yuan/kg), service life of equipment length (up to more than 30 years).
As a example by l0t/h boiler, with CN 102151480 A disclosed in compared with boiler flue gas desulfurization device, the consumption of neutral detergent absorber portion water reduces more than 20% (up to 30%), and it is up to more than 85% (being up to 92%) to the dust removal efficiency of flue gas, desulfurization degree is up to more than 85% (being up to 90%)；The operating cost of fume treatment reduces more than 20%.The floor space of the washing absorption tower that neutral detergent absorber portion uses reduces by more than 20%, height reduction more than 42%.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of desulfation dust-extraction device of this utility model；
Fig. 2 is the structural representation of washing absorption tower in Fig. 1；
Fig. 3 is that the A in Fig. 2 is to schematic diagram；
Fig. 4 is the structural representation of washing absorption tower in 2 one kinds of desulfation dust-extraction devices of embodiment.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Embodiment
1
With reference to Fig. 1 ~ 3, a kind of desulfation dust-extraction device, including washing absorption tower 1, after washing absorption tower 1, it is connected with neutralization reactor 2, Aeration tank 3, intermediate pool 4, eddy flow concentrator and circulating water pool 14 in turn；Described washing absorption tower 1 is made up of scrubbing tower 108 and king-tower 109 and secondary tower 112 by 111 connections of passing a bridge；Described scrubbing tower 108 top is provided with smoke inlet 107 and spray atomizing system 106, and described smoke inlet 107 is between scrubbing tower 108 sidewall and front partition wall 104；Being provided with one group of spaced front partition wall 104 and rear partition wall 103 in described scrubbing tower 108, the bottom of described front partition wall 104 is higher than the support column of rear partition wall 103；It is provided with 1 group of rhombus supercharging post 105 between described scrubbing tower 108 sidewall, front partition wall 104, between front partition wall 104 and rear partition wall 103, between rear partition wall 103 and scrubbing tower 108 sidewall, is provided with 2 groups of rhombus supercharging posts 105；It is filled with washings 101 in described scrubbing tower 108；The side of described scrubbing tower 108 is provided with the exhanst gas outlet 113 connected with king-tower 109.
Between the upper liquid level of described washings 101 is bottom rear partition wall 103 support column and front partition wall 104, bottom washings 101, it is provided with gas and water piece-rate system.
With reference to Fig. 2, described rhombus supercharging post 105 is made up of the rhombus column that 4 spacing distances are 8cm, and rhombus column uses fiber crops stone or granite to make, and makes flue gas pass through the speed >=45m/s of rhombus supercharging post 105 throat；Described rhombus column is installed in scrubbing tower 108 by the way of its diagonal is vertical with bottom scrubbing tower 108, and the side of rhombus column is 45 ° of installations with scrubbing tower 108 sidewall.
With reference to Fig. 3, described scrubbing tower 108 is provided with tube for removing ash 115 near the side of smoke inlet 107, and its relative side offers ash hole 116, and ash hole 116 is provided with water seal arrangement 102.
Being provided with spray equipment 110 in described king-tower 109, spray equipment 110 is positioned at the top of smoke inlet 107.
Described secondary tower 112 middle and upper part is provided with spiral dewaterer 114.
Described eddy flow concentrator is made up of the second cyclone 7 connected.
Embodiment
2
With reference to Fig. 1 and Fig. 4, a kind of desulfation dust-extraction device, including washing absorption tower 1, after washing absorption tower 1, it is connected with neutralization reactor 2, Aeration tank 3, intermediate pool 4, eddy flow concentrator and circulating water pool 14 in turn；Described washing absorption tower 1 is made up of scrubbing tower 108 and king-tower 109 and secondary tower 112 by 111 connections of passing a bridge；Described scrubbing tower 108 top is provided with smoke inlet 107 and spray atomizing system 106, and smoke inlet 107 is before scrubbing tower 108 sidewall and first between partition wall 104；Being provided with 2 groups of spaced front partition walls 104 and rear partition wall 103 in described scrubbing tower 108, the bottom of described front partition wall 104 is higher than the support column of rear partition wall 103；It is provided with 1 group of rhombus supercharging post 105 before described scrubbing tower 108 sidewall and first between partition wall 104, between front partition wall 104 and rear partition wall 103, after second, is provided with 2 groups of rhombus supercharging post 105(between partition wall 103 and scrubbing tower 108 sidewall as shown in Figure 4)；It is filled with washings 101 in described scrubbing tower 108；The side of described scrubbing tower 108 is provided with the exhanst gas outlet 113 connected with king-tower 109.
Between the upper liquid level of described washings 101 is bottom rear partition wall 103 support column and front partition wall 104, upper liquid level is apart from the bottom 15 ~ 25cm of front partition wall 104, such as 20cm, and the grey water droplet of the dust-laden that the granule that makes flue gas be formed after rhombus supercharging post 105 is bigger and containing S02Enter in washings 101 under inertia force that fine grained water droplet produces at high-speed motion and the effect of gravity, it is washed water 101 to absorb and remove, portion gas from washings 101 gap between liquid level and front partition wall 104 by entering between front partition wall 104 and rear partition wall 103, by the rhombus supercharging post 105 being arranged between front partition wall 104 and rear partition wall 103 and the staggered immixture of spray atomizing system 106, remove the dust in flue gas and S0 further2.Gas and water piece-rate system it is provided with bottom washings 101.
Described rhombus supercharging post 105 is made up of the rhombus column that 3 spacing distances are 6cm, makes flue gas reach 50m/s by the speed of rhombus supercharging post 105 throat；Described rhombus column is installed in scrubbing tower 108 by the way of its diagonal is vertical with bottom scrubbing tower 108.
Described scrubbing tower 108 is provided with tube for removing ash 115 near the side of smoke inlet 107, and its relative side offers ash hole 116, and ash hole 116 is provided with water seal arrangement 102.
Being provided with spray equipment 110 in described king-tower 109, spray equipment 110 is positioned at the top of smoke inlet 107.
Described secondary tower 112 middle and upper part is provided with spiral dewaterer 114.
Described eddy flow concentrator is made up of the second cyclone 7 connected.
Operation principle and the using method of a kind of desulfation dust-extraction device of this utility model be: flue gas (boiler, blast furnace, converting furnace, the various kiln gas such as incinerator) the rhombus supercharging post 105 of impact section is entered through smoke inlet 107, ramp up in scrubbing tower 108, when arriving throats end, flow velocity is up to 35～50m/s, the washings 101 that spray atomizing system 106 high pressure sprays into are atomized into minimum water droplet by high velocity smoke and the water-soluble substances with high-speed motion contacts with each other, around these minimum water droplets and grit, the air film of attachment is broken through, when water smoke and flue gas enter the diffuser of scrubbing tower 108, air velocity reduces, effect with grit as the nuclei of condensation is accelerated, simultaneously, part aqueous material in flue gas is dissolved in water smoke, flue-gas temperature is greatly reduced.Movement along with flue gas, flue gas after washing enters in the washings 101 bottom scrubbing tower 108, impact between washings 101 and flue gas grit and the centrifugal force of gas and water piece-rate system that is arranged in scrubbing tower 108 bottom wash water 101 by flue gas be partly dissolved SO2Water smoke separate, desulfurization cleaning mixture after separation enters bottom discharge pipe, gas from bottom to top passes the rhombus supercharging post 105 of front partition wall 104 opposite side through washings 101, the fog-like liquid of spray atomizing system 106 and flue gas be staggered reverse flow on rhombus supercharging post 105, carry out absorbing, mixing by gas sparging, current mix with flue gas after constantly supplementing and being atomized, the washing absorption ultrahigh in efficiency to flue gas；Scrubbing tower 108 will be partly dissolved SO again in flue gas2Water smoke separate and enter drain pipe；Rhombus supercharging post 105 and spray atomizing system 106 that flue gas is again introduced between rear partition wall 103 and scrubbing tower 108 sidewall carry out spray washing, the pollutant being dissolved in water in flue gas flow to drain pipe discharge with water, flue gas carries out spray washing after entering king-tower 109 again, then, entering the spiral dewaterer 114 bottom secondary tower 112 and wash flue gas, clean flue gas enters the spiral dewaterer 114 dehydration discharge bottom secondary cylinder.Rhombus supercharging post 105 and the combination of spray atomizing system 106 in scrubbing tower 108, mainly remove the grey water droplet of the bigger dust-laden of granule and containing S02Fine grained water droplet, after the carrying out washing treatment of flue gas, in flue gas, the water solublity of more than 85% contains S02Fine grained water droplet (clearance in its this stage is up to 92%, desulfation dust-extraction device as described in Example 2) is removed, and granule dust granules more than 2 μm is removed.
The discharge water (containing sulfur dioxide) of scrubbing tower 108, king-tower 109 and secondary tower 112 is entered neutralization reactor 2 by airtight water pipe after converging, adding alkali system added pulverized limestone by the dog-house 201 of neutralization reactor 2 and stirred by mixing plant 202, Calx and sulfur dioxide react formation calcium sulfate and part calcium sulfite forms emulsion.
The emulsion of neutralization reactor 2 enters Aeration tank 3 and aoxidizes, and Aeration tank 3 employing includes aeration tube, the aerator 301 of aeration head carries out aeration, by 2 roots blowers supply.
Emulsion enters intermediate pool 4 after Aeration tank 3 aeration, intermediate pool 4 is discharged gypsum slurries and is sent into the concentration of eddy flow concentrator by the first slush pump 6 by the first pipeline 21, eddy flow concentrator uses second cyclone composition, gypsum slurries enters the first calcium plaster tank 11 after one-level cyclone 10 concentrates and pumps into second cyclone 7 with the second slush pump 12 and again concentrate, concentrate rear slurry from flowing into the second calcium plaster tank 8, one, second cyclone 10, the supernatant of 7 enters circulating water pool 14 by second pipe 20, supernatant is delivered to washing absorption tower 1 by water pump 5 by water pipe 15 after circulating water pool 14 is clarified and is recycled.
The serosity of the second calcium plaster tank 8 delivers to belt filter press 18 (vacuum belt dewaterer) solid-liquid separation with the 3rd slush pump 9.Slip is added by feeding device, under the vacuum action that vacuum pump 16 and vacuum tank 17 produce, solid phase particles is trapped on filter cloth formation filter cake by filter cloth, and moves forward with filter cloth rubber strip, be sequentially completed filtration, Cake Wash, blot, slag dumping, filter cloth regeneration etc. are worked continuously.Comprehensive utilization transported by the filtering residue transfer car(buggy) 19 that belt filter press 18 unloads.
The calcium plaster of circulating water pool 14 precipitation can be sent back to one-level cyclone 10 by the 4th slush pump 13 by the 3rd pipeline 22.Intermediate pool 4 and circulating water pool 14 set overflow pipe B, C respectively to accident pool.
This utility model one desulfation dust-extraction device is applied in the various de-suphur of kiln fume dedusting projects such as multiple boilers, blast furnace, converting furnace, incinerator, and operation conditions is good,
This utility model one desulfation dust-extraction device, according to the size for the treatment of quantity, is also provided with 3 groups or 4 groups spaced front partition walls 104 and rear partition wall 103 in scrubbing tower 108 in the washing absorption tower 1 of desulfation dust-extraction device；The rhombus column spacing distance of the rhombus supercharging post 105 in scrubbing tower 108 can also be 7cm, 7.5cm, 8.5cm, 8.8cm, 9.0cm or 10cm.The change of above technical characteristic, those skilled in the art is described by word and is appreciated that and implements, therefore is the most separately illustrated as accompanying drawing.
Claims (10)
1. a desulfation dust-extraction device, including washing absorption tower, is connected with neutralization reactor, Aeration tank, intermediate pool, eddy flow concentrator and circulating water pool in turn after washing absorption tower；It is characterized in that, described washing absorption tower is made up of scrubbing tower and the king-tower and the secondary tower that are connected by gap bridge；Described scrubbing tower top is provided with smoke inlet and spray atomizing system；The spaced front partition wall of least one set and rear partition wall it is provided with in described scrubbing tower；The bottom of described front partition wall is higher than the support column of rear partition wall；Rhombus supercharging post it is provided with between described scrubbing tower sidewall, front partition wall and rear partition wall；It is filled with washings in described scrubbing tower；The side of described scrubbing tower is provided with the exhanst gas outlet connected with king-tower.
2. desulfation dust-extraction device as claimed in claim 1, it is characterised in that the quantity of described rhombus supercharging post is 1 ~ 3 group.
3. as claimed in claim 1 or 2 desulfation dust-extraction device, it is characterised in that described rhombus supercharging post is made up of the rhombus column of at least 2 spacing distance≤10cm, makes flue gas pass through the speed >=35m/s of rhombus supercharging post throat；Described rhombus column is installed in scrubbing tower by the way of its diagonal is vertical with wash tower bottoms.
4. desulfation dust-extraction device as claimed in claim 3, it is characterised in that the side of described rhombus column and scrubbing tower sidewall are 45 ° of installations.
5. as claimed in claim 3 desulfation dust-extraction device, it is characterised in that be spaced apart 6 ~ 9cm between described rhombus supercharging post neighboring diamonds post.
6. desulfation dust-extraction device as claimed in claim 1 or 2, it is characterised in that between the upper liquid level of described washings is bottom rear partition wall support column and front partition wall, be provided with gas and water piece-rate system bottom washings.
7. desulfation dust-extraction device as claimed in claim 1 or 2, it is characterised in that described scrubbing tower is provided with tube for removing ash near the side of smoke inlet, and its relative side offers ash hole, and ash hole is provided with water seal arrangement.
8. desulfation dust-extraction device as claimed in claim 1 or 2, it is characterised in that being provided with spray equipment in described king-tower, spray equipment is positioned at the top of smoke inlet.
9. desulfation dust-extraction device as claimed in claim 1 or 2, it is characterised in that described secondary tower middle and upper part is provided with spiral dewaterer.
10. desulfation dust-extraction device as claimed in claim 1 or 2, it is characterised in that described eddy flow concentrator is made up of the second cyclone connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620137960.7U CN205461680U (en) | 2016-02-24 | 2016-02-24 | Desulfuration and dust removal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620137960.7U CN205461680U (en) | 2016-02-24 | 2016-02-24 | Desulfuration and dust removal device |
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| Publication Number | Publication Date |
|---|---|
| CN205461680U true CN205461680U (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620137960.7U Expired - Fee Related CN205461680U (en) | 2016-02-24 | 2016-02-24 | Desulfuration and dust removal device |
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| Country | Link |
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| CN (1) | CN205461680U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105536445A (en) * | 2016-02-24 | 2016-05-04 | 长沙市望城区湘磊环境工程公司 | Desulfurizing and dedusting device |
| CN108499335A (en) * | 2018-06-08 | 2018-09-07 | 大唐环境产业集团股份有限公司 | A kind of string tower desulphurization system for rinsing demister using recycling filtrate water |
-
2016
- 2016-02-24 CN CN201620137960.7U patent/CN205461680U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105536445A (en) * | 2016-02-24 | 2016-05-04 | 长沙市望城区湘磊环境工程公司 | Desulfurizing and dedusting device |
| CN108499335A (en) * | 2018-06-08 | 2018-09-07 | 大唐环境产业集团股份有限公司 | A kind of string tower desulphurization system for rinsing demister using recycling filtrate water |
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