CN219559239U - Double-material efficient desulfurization dust removal ultralow emission system - Google Patents
Double-material efficient desulfurization dust removal ultralow emission system Download PDFInfo
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- CN219559239U CN219559239U CN202321231747.9U CN202321231747U CN219559239U CN 219559239 U CN219559239 U CN 219559239U CN 202321231747 U CN202321231747 U CN 202321231747U CN 219559239 U CN219559239 U CN 219559239U
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- demister
- dust removal
- flue gas
- tower body
- emission system
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Abstract
The utility model discloses a double-material efficient desulfurization dust removal ultralow emission system which comprises a tower body, a flue gas inlet, a limestone slurry spraying device, a demister I, an alkali liquor spraying layer, a liquid collecting distributor and a demister II, wherein the flue gas inlet is arranged on one side of the tower body, a flue gas outlet is arranged at the upper end of the tower body, the demister II, the alkali liquor spraying layer, the liquid collecting distributor, the demister I and the limestone slurry spraying device are sequentially arranged in the tower body above the flue gas inlet from top to bottom.
Description
[ field of technology ]
The utility model relates to the technical field of flue gas purification, in particular to the technical field of a double-material efficient desulfurization dust removal ultralow emission system.
[ background Art ]
The flue gas treatment equipment mainly comprises a flue gas desulfurization tower, a flue gas washing tower, an absorption medium transmission pipe network, a chimney, a flue and the like, is mainly applied to the power industry, the chemical industry, the coking industry, the metallurgical industry, the manufacturing industry with a self-contained boiler and the like, and has the main functions of absorbing polluting and corrosive gaseous ions or molecules in the flue gas generated by fuel combustion through chemical reaction, so that the flue gas is purified, and the flue gas can be directly discharged into the atmosphere without polluting the environment.
With the increasingly strict environmental protection requirements, the pollutant emission standard of the coal-fired power plant is mentioned, and the current national thermal power plant requires the emission of the flue gas pollutants to reach the ultralow emission standard. The method adopted at the present stage mainly comprises the following steps: limestone-gypsum wet single-tower single-cycle desulfurization, wet electric precipitation, limestone-gypsum wet single-tower double-cycle desulfurization, wet electric precipitation or composite process: the technology has the following defects of in-furnace desulfurization, semi-dry desulfurization, wet desulfurization and wet electric precipitation: 1. the limestone-gypsum wet single-tower single-cycle wet electric dust removal is adopted for high-concentration desulfurization, the liquid-gas ratio is large, the circulating pump is more in design and high in energy consumption, and the wet electric is arranged to increase the investment, so that the operation cost is high and the wastewater amount is large; 2. the limestone-gypsum wet single-tower single-cycle wet electric dust removal is adopted for high-concentration desulfurization, the occupied area is large, a circulating pool is needed to be additionally arranged, and in addition, the wet electric dust remover increases the investment, the running cost is high, and the wastewater amount is large; 3. the high-concentration desulfurization adopts a composite process, the flow is complex, and the occupied area is large.
[ utility model ]
The utility model aims to solve the problems in the prior art, and provides a double-material efficient desulfurization dust removal ultralow emission system which can reduce energy consumption, running cost, wastewater amount and investment, and has the advantages of simple working flow and small occupied area.
In order to achieve the aim, the utility model provides a double-material efficient desulfurization dust removal ultralow emission system, which comprises a tower body, a flue gas inlet, a limestone slurry spraying device, a demister I, an alkali liquor spraying layer, a liquid collecting distributor and a demister II, wherein the flue gas inlet is arranged on one side of the tower body, a flue gas outlet is arranged at the upper end of the tower body, and the demister II, the alkali liquor spraying layer, the liquid collecting distributor, the demister I and the limestone slurry spraying device are sequentially arranged in the tower body above the flue gas inlet from top to bottom.
Preferably, the limestone slurry spraying device comprises a plurality of limestone slurry spraying layers which are sequentially arranged from top to bottom.
Preferably, the number of the limestone slurry spraying layers is three, and the limestone slurry spraying layers comprise spraying pipes and a plurality of nozzles arranged on the spraying pipes.
Preferably, the demister I comprises a primary demister and a secondary demister positioned above the primary demister.
Preferably, the primary demister and the secondary demister adopt two layers of flat plate demisters.
Preferably, the demister II is a wire mesh demister.
Preferably, the liquid collecting and distributing device comprises a liquid collecting plate, a plurality of smoke through holes, a plurality of waterproof caps and liquid discharging ports, wherein the smoke through holes are formed in the liquid collecting plate, the waterproof caps are arranged at the upper ends of the smoke through holes, and the liquid discharging ports extending out of the tower body are formed in the liquid collecting plate.
Preferably, the alkali liquor spraying layer comprises an alkali liquor spraying layer I and an alkali liquor spraying layer II positioned above the alkali liquor spraying layer I.
Preferably, a synergistic device positioned below the limestone slurry spraying device is arranged in the tower body above the flue gas inlet, and the synergistic device is a mesh plate.
Preferably, a stirrer is arranged in the tower body below the flue gas inlet, and an oxidation air supply port is arranged on the tower body below the flue gas inlet.
The utility model has the beneficial effects that: 1. the limestone slurry spraying device and the alkali liquor spraying layer are arranged in the tower body, and the desulfurizing agent adopts two materials, namely limestone and sodium hydroxide, so that the desulfurizing efficiency can be improved, the condition that the generated flue gas contains excessive gypsum and has high requirements on subsequent dust removing equipment can be avoided, the working flow is simple, and the occupied area is small;
2. the alkali liquor part is recycled through the liquid collecting distributor, so that the running cost can be saved;
3. the desulfurizing agent adopts limestone and sodium hydroxide, so that the liquid-gas ratio can be greatly reduced, and the setting of a circulating pump is reduced, thereby reducing the energy consumption and the investment;
4. the desulfurizing agent adopts limestone and sodium hydroxide to obtain wide sources, so that the yield of the wet wastewater is reduced compared with that of the wet wastewater completely using limestone gypsum;
5. can realize the ultralow emission of sulfur dioxide and dust and meet the further environmental protection requirement.
The features and advantages of the present utility model will be described in detail by way of example with reference to the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a schematic diagram of a dual-material high-efficiency desulfurization dust removal ultra-low emission system.
In the figure: the device comprises a 1-tower body, a 2-flue gas inlet, a 3-limestone slurry spraying device, a 4-demister I, a 5-alkali liquor spraying layer, a 6-liquid collecting distributor, a 7-demister II, an 8-flue gas outlet, a 9-synergistic device, a 10-stirrer, an 11-oxidation air supply port, a 31-limestone slurry spraying layer, a 41-primary demister, a 42-secondary demister, a 51-liquid collecting plate, a 52-alkali liquor spraying layer II, a 61-liquid collecting plate, 62-flue gas through holes, a 63-waterproof cap and a 64-liquid outlet.
[ detailed description ] of the utility model
Referring to fig. 1, the utility model relates to a double-material efficient desulfurization dust-removing ultra-low emission system, which comprises a tower body 1, a flue gas inlet 2, a limestone slurry spraying device 3, a demister I4, an alkali liquor spraying layer 5, a liquid collecting distributor 6 and a demister II7, wherein one side of the tower body 1 is provided with the flue gas inlet 2, the upper end of the tower body 1 is provided with a flue gas outlet 8, the tower body 1 above the flue gas inlet 2 is internally provided with the demister II7, the alkali liquor spraying layer 5, the liquid collecting distributor 6, the demister I4 and the limestone slurry spraying device 3 from top to bottom in sequence, the limestone slurry spraying device 3 comprises a plurality of limestone slurry spraying layers 31 which are sequentially arranged from top to bottom, the limestone slurry spraying layers 31 comprise spraying pipes and a plurality of nozzles which are arranged on the spraying pipes, the demister I4 comprises a first-level demister 41 and a second-level demister 42 positioned above the first-level demister 41, the first-level demister 41 and the second-level demister 42 adopt two layers of flat-plate demisters, the demister II7 adopts a silk screen demister, the liquid collecting distributor 6 comprises a liquid collecting plate 61, a plurality of flue gas through holes 62, a plurality of waterproof caps 63 and liquid discharging ports 64, flue gas through holes 62 are arranged on the liquid collecting plate 61, waterproof caps 63 are arranged at the upper ends of the flue gas through holes 62, liquid discharging ports 64 extending out of a tower body 1 are arranged on the liquid collecting plate 61, the alkali liquor spraying layer 5 comprises an alkali liquor spraying layer I51 and an alkali liquor spraying layer II52 positioned above the alkali liquor spraying layer I51, a synergistic device 9 positioned below a limestone slurry spraying device 3 is arranged in the tower body 1 above a flue gas inlet 2, a stirrer 10 is arranged in the tower body 1 below the flue gas inlet 2, an oxidation air supply port 11 is arranged on the tower body 1 below the flue gas inlet 2.
The working process of the utility model comprises the following steps:
in the working process of the double-material efficient desulfurization dust removal ultralow emission system, flue gas enters the tower body 1 from the flue gas inlet 2, then flows from bottom to top, contacts and reacts with limestone slurry sprayed from the limestone slurry spraying layer 31 to realize desulfurization dust removal, then passes through the primary demister 41 and the secondary demister 42 to carry out demisting, then passes through the flue gas through hole 62, contacts and reacts with sodium hydroxide solution sprayed from the alkali liquor spraying layer I51 and the alkali liquor spraying layer II52 to realize desulfurization dust removal, then passes through the demister II7 to carry out demisting, and finally is discharged to the outside atmosphere from the flue gas outlet 8.
The desulfurization and dust removal alkali liquid sprayed out of the alkali liquid spraying layer 5 is collected through the liquid collecting plate 61 and discharged through the liquid discharging port 64 for recycling.
The stirring action of the air and the stirrer 10 is carried through the oxidation gas supply port 11 so that the sulfide is further oxidized and finally precipitated.
The above embodiments are illustrative of the present utility model, and not limiting, and any simple modifications of the present utility model fall within the scope of the present utility model.
Claims (10)
1. A high-efficient desulfurization dust removal ultralow emission system of two materials, its characterized in that: including tower body (1), flue gas import (2), limestone thick liquid spray set (3), defroster I (4), alkali lye spray layer (5), liquid collecting distributor (6) and defroster II (7), one side of tower body (1) is equipped with flue gas import (2), the upper end of tower body (1) is equipped with out flue gas mouth (8), be equipped with defroster II (7), alkali lye spray layer (5), liquid collecting distributor (6), defroster I (4) and limestone thick liquid spray set (3) from top to bottom in proper order in tower body (1) of flue gas import (2) top.
2. The dual-material efficient desulfurization dust removal ultra-low emission system as claimed in claim 1, wherein: the limestone slurry spraying device (3) comprises a plurality of limestone slurry spraying layers (31) which are sequentially arranged from top to bottom.
3. The dual-material efficient desulfurization dust removal ultra-low emission system as claimed in claim 2, wherein: the number of the limestone slurry spraying layers (31) is three, and the limestone slurry spraying layers (31) comprise spraying pipes and a plurality of nozzles arranged on the spraying pipes.
4. The dual-material efficient desulfurization dust removal ultra-low emission system as claimed in claim 1, wherein: the demister I (4) comprises a primary demister (41) and a secondary demister (42) positioned above the primary demister (41).
5. The dual-material efficient desulfurization dust removal ultra-low emission system as set forth in claim 4, wherein: the primary demister (41) and the secondary demister (42) adopt two layers of flat plate demisters.
6. The dual-material efficient desulfurization dust removal ultra-low emission system as claimed in claim 1, wherein: and the demister II (7) is a wire mesh demister.
7. The dual-material efficient desulfurization dust removal ultra-low emission system as claimed in claim 1, wherein: the liquid collecting and distributing device is characterized in that the liquid collecting and distributing device (6) comprises a liquid collecting plate (61), a plurality of smoke through holes (62), a plurality of waterproof caps (63) and liquid draining ports (64), the smoke through holes (62) are formed in the liquid collecting plate (61), the waterproof caps (63) are arranged at the upper ends of the smoke through holes (62), and the liquid draining ports (64) extending out of the tower body (1) are formed in the liquid collecting plate (61).
8. The dual-material efficient desulfurization dust removal ultra-low emission system as claimed in claim 1, wherein: the alkali liquor spraying layer (5) comprises an alkali liquor spraying layer I (51) and an alkali liquor spraying layer II (52) positioned above the alkali liquor spraying layer I (51).
9. The dual-material efficient desulfurization dust removal ultra-low emission system as claimed in claim 1, wherein: a synergistic device (9) positioned below the limestone slurry spraying device (3) is arranged in the tower body (1) above the flue gas inlet (2), and the synergistic device (9) is a net plate.
10. A dual-material high-efficiency desulfurization dust removal ultra-low emission system as claimed in any one of claims 1 to 9, wherein: a stirrer (10) is arranged in the tower body (1) below the flue gas inlet (2), and an oxidation gas supply port (11) is arranged on the tower body (1) below the flue gas inlet (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321231747.9U CN219559239U (en) | 2023-05-22 | 2023-05-22 | Double-material efficient desulfurization dust removal ultralow emission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321231747.9U CN219559239U (en) | 2023-05-22 | 2023-05-22 | Double-material efficient desulfurization dust removal ultralow emission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219559239U true CN219559239U (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321231747.9U Active CN219559239U (en) | 2023-05-22 | 2023-05-22 | Double-material efficient desulfurization dust removal ultralow emission system |
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| Country | Link |
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| CN (1) | CN219559239U (en) |
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2023
- 2023-05-22 CN CN202321231747.9U patent/CN219559239U/en active Active
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