CN104740993A - Three-stage zoned collaborative dust removal and desulfurization system - Google Patents
Three-stage zoned collaborative dust removal and desulfurization system Download PDFInfo
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- CN104740993A CN104740993A CN201510176807.5A CN201510176807A CN104740993A CN 104740993 A CN104740993 A CN 104740993A CN 201510176807 A CN201510176807 A CN 201510176807A CN 104740993 A CN104740993 A CN 104740993A
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Abstract
The invention discloses a three-stage zoned collaborative dust removal and desulfurization system. The three-stage zoned collaborative dust removal and gas desulfurization system comprises a desulfurization tower which is provided with a flue gas inlet and a flue gas outlet, wherein a spraying device is arranged in the desulfurization tower; an in-tower rectifying device for removing dust and an in-tower demisting device for removing atomized particles are further arranged in the desulfurization tower; the in-tower rectifying device is located between the flue gas inlet and the spraying device, and the in-tower demisting device is located between the spraying device and the flue gas outlet. According to the three-stage zoned collaborative dust removal and desulfurization system, the spraying device, the in-tower rectifying device and the in-tower demisting device are reasonably distributed in the desulfurization tower, fine particles are crashed in a foam layer and are captured by virtue of vortexes when dusty gas flows through the in-tower rectifying device and are further captured when dusty gas flows through the spraying device, and the atomized particles carried in flue gas are further removed when the flue gas flows through the in-tower demisting device, so that the dust content in the flue gas is collaboratively and deeply removed during the desulfurization, and the low-energy-consumption emission is realized; the three-stage zoned collaborative dust removal and desulfurization system can be realized by properly transforming an existing desulfurization device, and the investment and the operation cost can be effectively lowered.
Description
Technical field
The present invention relates to a kind of dusting and desulfuring system, particularly a kind of three grades of formula subregions work in coordination with dusting and desulfuring system.
Background technology
At present, Chinese large-sized coal-burning power plant has installed the environmental protecting device such as desulphurization and denitration, dedusting substantially, coal-fired plant flue gas pollutes control to a certain extent to air, but along with economic development, living standards of the people improve, the demand of atmosphere quality is also improved day by day, correspondingly promote the more enforcement of the appearance of high-environmental standard and new environmental law, make coal-fired plant flue gas pollutant emission under the new situation face higher requirement; In addition, fume environment protection facility and the technology of present stage fired power generating unit configuration bias toward " extensive style " overall control of qualified discharge more, and the pollutant being difficult to meet existing atmosphere quality becomes more meticulous severity control demand; Especially in the area of different economic level, environmental condition, need the green technology adapting to local characteristic especially, with less cost, solve regional atmosphere polluting problem pointedly.
The Wet type electric dust-removing device (number of patent application 201320817795) of efficient removal trace contaminant, flue gas high-speed desulfuration wet-esp deentrainment tower (number of patent application 201320443909), wet electrical dust precipitator (number of patent application 201320825823), the dusting and desulfuring systems disclosed in patent such as wet method sulphur removing and dust removing integrated apparatus (number of patent application 201320635139) be all in existing desulfuration absorbing tower after increase Wet type electric dust-removing device, it need newly increase reaction respiratory system, the operation of this device simultaneously need increase power consumption and energy consumption, build and operating cost all very expensive.Desulphurizing and dust-removing integral flue-gas treater (number of patent application 201210425383) improves desulfurization and dedusting effect by setting up Venturi tube devulcanizer, and operation energy consumption is very huge, and should not be used for the operation of large-sized unit.Spiral-flow tower board desulfurized dust remover (number of patent application 201320521091), Gas-liquid turbulence type desulfurization dust remover (number of patent application 201320728067) are conventional equipment, and should not large-sized unit be used for, the requirement of minimum discharge can not be reached.
Therefore, just need to improve existing dusting and desulfuring system, can efficient removal SO be realized
2, remove dust to the collaborative degree of depth simultaneously, improve the efficiency of desulphurization system, and effectively can reduce investment and operating cost.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of three grades of formula subregions to work in coordination with dusting and desulfuring system, can efficient removal SO be realized
2, remove dust to the collaborative degree of depth simultaneously, improve the efficiency of desulphurization system, and effectively can reduce investment and operating cost.
Three grades of formula subregions of the present invention work in coordination with dusting and desulfuring system, comprise the desulfurizing tower being provided with smoke inlet and exhanst gas outlet, spray equipment is provided with in described desulfurizing tower, also be provided with in described desulfurizing tower fairing in the tower for dedusting and for remove atomizing particle tower in demister, in described tower, fairing is between smoke inlet and spray equipment, and in described tower, demister is between spray equipment and exhanst gas outlet.
Further, described exhanst gas outlet is connected with flue of giving vent to anger, described in give vent to anger in flue and be provided with successively for the flue fairing of homogenizing flue gas flow field and the flue demister for removing atomizing particle along gas flow direction.
Further, to give vent to anger described in the outlet guiding device be also provided with before being positioned at flue fairing in flue for stable flue gas flow field; Described flue of giving vent to anger comprises flat segments and expansion segment, and described flue fairing and flue demister are all located at expansion segment; Described outlet guiding device comprises arc and straight plate, and described arc is located in flat segments, and described straight plate extends to expansion segment and suitable with the expansion ratio of expansion segment from flat segments.
Further, described smoke inlet is connected with air inlet flue, be provided with the inlet guide for stable flue gas flow field in described air inlet flue, described inlet guide comprises the arc plate be arranged in air inlet flue turning, and the position of described arc plate is corresponding with air inlet flue turning.
Further, described spray equipment comprises the cleaning solution shower be horizontally installed in desulfurizing tower, and described cleaning solution shower is evenly equipped with spray head.
Further, the distance in described tower between demister and smoke inlet is 0.5-2.5m, and the distance in described tower between demister and undermost cleaning solution shower is 1.0-2.0m.
Further, in described tower, fairing and flue fairing are screen hole type structure or grille-type structure.
Further, in described tower, fairing and/or flue fairing comprise cowling panel, described cowling panel offer the rectification hole running through plate body, and described rectification hole is circle, bar shaped or fusiformis.
Further, in described tower, demister and/or flue demister comprise framework and are located at the bending corrugated sheet of framework, are provided with airflow clearance between adjacent described corrugated sheet, atomizing particle from airflow clearance by time collision form liquid film at corrugated sheet.
Beneficial effect of the present invention: three grades of formula subregions of the present invention work in coordination with dusting and desulfuring system, demister in fairing and tower is reasonably arranged in spray equipment, tower in desulfurizing tower, when dusty gas flows through fairing in tower, molecule is captured by collision and eddy current effect in froth bed, caught further when then flowing through spray equipment, the atomizing particle carried in flue gas is removed further when flowing through demister in tower, realize the dust content of desulfurization simultaneously in collaborative deep removal flue gas, realize the disposal of pollutants of low energy consumption; Structure of the present invention is simple, and the basis of existing desulfurizer can realize through appropriate reconstruction, effectively can reduce investment and operating cost.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of fairing in tower of the present invention (or flue fairing);
Fig. 3 is the structural representation of demister in tower of the present invention (or flue demister).
Detailed description of the invention
As shown in Figures 1 to 3: three grades of formula subregions of the present embodiment work in coordination with dusting and desulfuring system, comprise the desulfurizing tower 1 being provided with smoke inlet and exhanst gas outlet, spray equipment is provided with in described desulfurizing tower 1, also be provided with in described desulfurizing tower 1 fairing 3 in the tower for dedusting and for remove atomizing particle tower in demister 4, in described tower, fairing 3 is between smoke inlet and spray equipment, and in described tower, demister 4 is between spray equipment and exhanst gas outlet; In tower, fairing 3 can form froth bed, to carry out steel foams to dusty gas; Demister 4 in fairing 3 and tower is reasonably arranged in spray equipment, tower in desulfurizing tower 1, when dusty gas flows through fairing 3 in tower, molecule is captured by collision and eddy current effect in froth bed, caught further when then flowing through spray equipment, the atomizing particle carried in flue gas is removed further when flowing through demister 4 in tower, realize the dust content of desulfurization simultaneously in collaborative deep removal flue gas, realize the disposal of pollutants of low energy consumption; Native system structure is simple, and the basis of existing desulfurizer can realize through appropriate reconstruction, effectively can reduce investment and operating cost.
In the present embodiment, described exhanst gas outlet is connected with flue of giving vent to anger, described in give vent to anger in flue and be provided with for the flue fairing 6 of homogenizing flue gas flow field and the flue demister 7 for removing atomizing particle successively along gas flow direction; The structure of flue fairing 6 can be identical with fairing in tower 3, and just because desulfurizing tower 1 is arranged vertically, air flue horizontal of giving vent to anger is arranged, two fairings need to change arranged direction and realize rectification to contact with gas; In like manner, the structure of flue demister 7 also can be consistent with the structure of demister in tower 4; In the present embodiment, described in give vent to anger be positioned at flue fairing 6 in flue before be also provided with outlet guiding device for stable flue gas flow field; Described flue of giving vent to anger comprises flat segments 51 and expansion segment 52, and expansion segment 52 is all located at by described flue fairing 6 and flue demister 7; Described outlet guiding device comprises arc 81 and straight plate 82, and described arc 81 is located in flat segments 51, and described straight plate 82 extends to expansion segment 52 and suitable with the expansion ratio of expansion segment 52 from flat segments 51; Flat segments 51 partly can be positioned at desulfurizing tower 1 top and be connected with gas outlet, even can be a part for desulfurizing tower 1; The longitudinal section of expansion segment 52 is greater than flat segments 51 to adapt to the installation requirements of flue fairing 6 and flue demister 7, and flat segments 51 can in a tubular form, and expansion segment 52 can in tower-like; Outlet guiding device carries out water conservancy diversion distribution to flue gas, and flue gas flow field is evenly distributed; Flat segments 51 is expansion ratio with the angle of inclination of expansion segment 52 junction.
In the present embodiment, described smoke inlet is connected with air inlet flue 11, the inlet guide for stable flue gas flow field is provided with in described air inlet flue 11, described inlet guide comprises the arc plate 91 be arranged in air inlet flue 11 turning, and the position of described arc plate 91 is corresponding with air inlet flue 11 turning; Inlet guide all can adopt deflector structure with outlet guiding device; Arc plate 91 adapts to corner structure, is evenly entered in desulfurizing tower 1 by flue gas.
In the present embodiment, described spray equipment comprises the cleaning solution shower 21 be horizontally installed in desulfurizing tower 1, and described cleaning solution shower 21 is evenly equipped with spray head 22; Desulfurizing tower 1 intracavity bottom can arrange the slurry pool for depositing cleaning solution, and cleaning solution shower 21 is communicated with slurry pool by washing pump and associated conduit, realizes circulated sprinkling; In addition, the cleaning solution shower 21 of multilayer (more than two-layer) can be set in desulfurizing tower 1, make spray desulfurization more efficient; In the present embodiment, the distance in described tower between demister 4 and smoke inlet is 0.5-2.5m, and the distance in described tower between demister 4 and undermost cleaning solution shower 21 is 1.0-2.0m; Certainly, concrete distance can be determined according to actual conditions.
In the present embodiment, in described tower, fairing 3 and flue fairing 6 are screen hole type structure or grille-type structure; Preferably, in described tower, fairing 3 and flue fairing 6 include cowling panel 31, described cowling panel 31 offer the rectification hole 32 running through plate body, and described rectification hole 32 is circular; Shape and desulfurizing tower 1 inner chamber and the flue interior shape of giving vent to anger of cowling panel 31 are suitable; Rectification hole 32 pairs of flue gases form constraint, and make smoke distribution even, liquid mass transfer effect is better; Certainly, the shape of rectification hole 32 can also be bar shaped or fusiformis.
In the present embodiment, in described tower, demister 4 and flue demister 7 include framework 41 and are located at the bending corrugated sheet 42 of framework 41, be provided with airflow clearance 43 between adjacent described corrugated sheet 42, atomizing particle from airflow clearance 43 by time collision form liquid film at corrugated sheet 42; Liquid film gets off with air motion is separated to turning, and the drop droplet be not removed continues to be separated at next (or lower several) turning; In addition, the baffle plate (not shown) extended towards airflow clearance 43 can be set at the topmost of corrugated sheet 42, the droplet be about to through airflow clearance 43 be tackled, adds the probability that droplet is captured, improve except fog effect.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (9)
1. three grades of formula subregions work in coordination with dusting and desulfuring system, comprise the desulfurizing tower being provided with smoke inlet and exhanst gas outlet, spray equipment is provided with in described desulfurizing tower, it is characterized in that: be also provided with in described desulfurizing tower fairing in the tower for dedusting and for remove atomizing particle tower in demister, in described tower, fairing is between smoke inlet and spray equipment, and in described tower, demister is between spray equipment and exhanst gas outlet.
2. three grades of formula subregions according to claim 1 work in coordination with dusting and desulfuring system, it is characterized in that: described exhanst gas outlet is connected with flue of giving vent to anger, described in give vent to anger in flue and be provided with successively for the flue fairing of homogenizing flue gas flow field and the flue demister for removing atomizing particle along gas flow direction.
3. three grades of formula subregions according to claim 2 work in coordination with dusting and desulfuring system, it is characterized in that: described in give vent to anger be positioned at flue fairing in flue before be also provided with outlet guiding device for stable flue gas flow field; Described flue of giving vent to anger comprises flat segments and expansion segment, and described flue fairing and flue demister are all located at expansion segment; Described outlet guiding device comprises arc and straight plate, and described arc is located in flat segments, and described straight plate extends to expansion segment and suitable with the expansion ratio of expansion segment from flat segments.
4. three grades of formula subregions according to claim 1 work in coordination with dusting and desulfuring system, it is characterized in that: described smoke inlet is connected with air inlet flue, the inlet guide for stable flue gas flow field is provided with in described air inlet flue, described inlet guide comprises the arc plate be arranged in air inlet flue turning, and the position of described arc plate is corresponding with air inlet flue turning.
5. three grades of formula subregions according to claim 1 work in coordination with dusting and desulfuring system, it is characterized in that: described spray equipment comprises the cleaning solution shower be horizontally installed in desulfurizing tower, and described cleaning solution shower is evenly equipped with spray head.
6. three grades of formula subregions according to claim 5 work in coordination with dusting and desulfuring system, it is characterized in that: the distance in described tower between demister and smoke inlet is 0.5-2.5m, the distance in described tower between demister and undermost cleaning solution shower is 1.0-2.0m.
7. three grades of formula subregions according to any one of claim 2 to 6 work in coordination with dusting and desulfuring system, it is characterized in that: in described tower, fairing and flue fairing are screen hole type structure or grille-type structure.
8. three grades of formula subregions according to any one of claim 2 to 6 work in coordination with dusting and desulfuring system, it is characterized in that: in described tower, fairing and/or flue fairing comprise cowling panel, described cowling panel offers the rectification hole running through plate body, described rectification hole is circle, bar shaped or fusiformis.
9. three grades of formula subregions according to any one of claim 2 to 6 work in coordination with dusting and desulfuring system, it is characterized in that: in described tower, demister and/or flue demister comprise framework and be located at the bending corrugated sheet of framework, be provided with airflow clearance between adjacent described corrugated sheet, atomizing particle from airflow clearance by time collision form liquid film at corrugated sheet.
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| CN201510176807.5A CN104740993B (en) | 2015-04-13 | 2015-04-13 | Three-stage zoned collaborative dust removal and desulfurization system |
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| CN201510176807.5A CN104740993B (en) | 2015-04-13 | 2015-04-13 | Three-stage zoned collaborative dust removal and desulfurization system |
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| CN104740993B CN104740993B (en) | 2017-05-24 |
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Cited By (3)
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| CN107569979A (en) * | 2017-09-22 | 2018-01-12 | 中国华能集团公司 | A kind of structures and methods for eliminating absorption tower exit sharp pounding |
| CN108014620A (en) * | 2017-12-04 | 2018-05-11 | 重庆精创联合环保工程有限公司 | The integrated processing technique of flue gas minimum discharge |
| CN110368799A (en) * | 2019-07-30 | 2019-10-25 | 福建龙净脱硫脱硝工程有限公司 | A kind of semidry process desulfurizer and method |
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| CN104740993B (en) | 2017-05-24 |
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Address after: 401122, 96 Jin Yu Road, new North District, Chongqing, Yubei District Patentee after: National electric investment group Yuanda Environmental Protection Engineering Co.,Ltd. Address before: 401122 96 Jin Yu Road, North New District, Chongqing Patentee before: CPI YUANDA ENVIRONMENTAL-PROTECTION ENGINEERING Co.,Ltd. |
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Effective date of registration: 20200515 Address after: 401122, 96 Jin Yu Road, new North District, Chongqing, Yubei District Co-patentee after: INNER MONGOLIA HMHJ ALUMINUM ELECTRICITY Co.,Ltd. Patentee after: National electric investment group Yuanda Environmental Protection Engineering Co.,Ltd. Address before: 401122, 96 Jin Yu Road, new North District, Chongqing, Yubei District Patentee before: National electric investment group Yuanda Environmental Protection Engineering Co.,Ltd. |