CN211585978U - High-efficient absorption structure of wet flue gas desulfurization - Google Patents
High-efficient absorption structure of wet flue gas desulfurization Download PDFInfo
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- CN211585978U CN211585978U CN201921743443.4U CN201921743443U CN211585978U CN 211585978 U CN211585978 U CN 211585978U CN 201921743443 U CN201921743443 U CN 201921743443U CN 211585978 U CN211585978 U CN 211585978U
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Abstract
The utility model provides a high-efficient absorbing structure of wet flue gas desulfurization, structural design is reasonable, simple structure, flow field are smooth and easy. The utility model comprises an inlet flue, a desulfurization tower body, an absorption layer and a liquid collecting layer; the absorption layer is provided with a nozzle; the inlet flue is connected with the desulfurization tower body; the method is characterized in that: the absorption layer comprises a first absorption layer, a second absorption layer, a third absorption layer, a fourth absorption layer and a fifth absorption layer; the first absorption layer, the second absorption layer, the third absorption layer, the liquid collecting layer, the fourth absorption layer and the fifth absorption layer are sequentially arranged in the desulfurization tower body from bottom to top; the nozzles arranged on the first absorption layer, the second absorption layer, the third absorption layer and the fourth absorption layer are bidirectional nozzles, and the spraying directions of the bidirectional nozzles are two directions of reverse smoke and forward smoke; the nozzle arranged on the fifth absorption layer is a one-way nozzle, and the spraying direction of the one-way nozzle is the reverse smoke direction.
Description
Technical Field
The utility model relates to a high-efficient absorbent structure of wet flue gas desulfurization for among coal fired power plant's the desulfurizing tower.
Background
At the end of 2015, the environmental protection agency, the national institute of improvement and energy resources proposed that all coal-fired power plants with improvement conditions in the country strive to achieve ultralow emission, namely, emission concentrations of smoke, sulfur dioxide and nitrogen oxides are not higher than 10mg/Nm respectively3、35mg/Nm3、50mg/Nm3And the national conditional newly-built coal-fired generating set reaches the ultra-low emission level.
As the coal formation rule determines that the sulfur content of the coal system deposited on the upper land is low, the sulfur content of the coal system deposited on the lower sea-land or deposited on the shallow sea is high, the yield of high-sulfur coal of a carbolithic period at the lower part of a plurality of coal fields is increased day by day along with the continuation of mining time and the improvement of coal yield, the sulfur content of the high-sulfur coal is more than 2 percent, and high-concentration sulfur dioxide can be formed by burning the high-sulfur coal, so that a simple, reasonable and efficient absorption structure is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art, and provides a wet desulphurization high-efficiency absorption structure with reasonable structural design, simple structure and smooth flow field.
The utility model provides a technical scheme that above-mentioned problem adopted is: a wet desulphurization high-efficiency absorption structure comprises an inlet flue, a desulphurization tower body, an absorption layer and a liquid collecting layer; the absorption layer is provided with a nozzle; the inlet flue is connected with the desulfurization tower body; the method is characterized in that: the absorption layer comprises a first absorption layer, a second absorption layer, a third absorption layer, a fourth absorption layer and a fifth absorption layer; the first absorption layer, the second absorption layer, the third absorption layer, the liquid collecting layer, the fourth absorption layer and the fifth absorption layer are sequentially arranged in the desulfurization tower body from bottom to top; the nozzles arranged on the first absorption layer, the second absorption layer, the third absorption layer and the fourth absorption layer are bidirectional nozzles, and the spraying directions of the bidirectional nozzles are two directions of reverse smoke and forward smoke; the nozzle arranged on the fifth absorption layer is a one-way nozzle, and the spraying direction of the one-way nozzle is the reverse smoke direction.
The inlet flue is conical, and the inlet of the inlet flue gradually enlarges towards the outlet of the inlet flue.
Liquid collection layer be provided with gas cap and absorption liquid backward flow hole, absorption liquid backward flow hole equipartition is around the gas cap.
Compared with the prior art, the utility model, have following advantage and effect: the utility model discloses a 4 layers of two-way combination mode that sprays +1 layer one-way spraying + collecting layer has efficient sulfur dioxide absorption desorption rate, and sulfur dioxide entry concentration is at 5000mg Nm3~8000mg/Nm3In the range of (dry basis, standard state and 6 percent oxygen), the flow of the circulating pump and the specification of the nozzle are reasonably selected under the appropriate liquid-gas ratio, the absorption spraying coverage rate is ensured, and the emission concentration of sulfur dioxide can be controlled to be 35mg/Nm3The range of (dry basis, standard state, 6% oxygen) meets the ultra-low emission standard, and is particularly suitable for the desulfurization of high-sulfur coal combustion flue gas.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic top view of the embodiment of the present invention.
Fig. 3 is a schematic structural diagram of an absorption layer with a bidirectional nozzle according to an embodiment of the present invention.
Fig. 4 is a schematic structural view of the absorption layer provided with the one-way nozzle according to the embodiment of the present invention.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Referring to fig. 1-4, the embodiment of the present invention includes an inlet flue 1, a desulfurization tower body 2, a first absorption layer 3, a second absorption layer 4, a third absorption layer 5, a liquid collection layer 8, a fourth absorption layer 6, and a fifth absorption layer 7.
The first absorption layer 3, the second absorption layer 4, the third absorption layer 5, the liquid collecting layer 8, the fourth absorption layer 6 and the fifth absorption layer 7 are sequentially arranged in the desulfurization tower body 2 from bottom to top.
Two-way nozzles 9 are arranged on the first absorption layer 3, the second absorption layer 4, the third absorption layer 5 and the fourth absorption layer 6, and the spraying directions of the two-way nozzles 9 are two directions of reverse smoke and forward smoke, so that two-way spraying is realized.
The fifth absorption layer 7 is provided with a one-way nozzle 9, and the spraying direction of the one-way nozzle 9 is the reverse smoke direction, so that one-way spraying is realized.
The inlet flue 1 is connected with the desulfurization tower body 2, the inlet flue 1 is conical, the inlet of the inlet flue is gradually enlarged to the outlet of the inlet flue, a gradually-expanding structure is formed, the using amount of alloy parts of the inlet flue 1 can be reduced, inlet flue gas can be helped to enter the desulfurization tower tangentially, the whole flow field is smoother, and the distribution of the flue gas in the tower is more uniform.
The liquid collecting layer 8 is provided with an air cap and absorption liquid backflow holes which are uniformly distributed around the air cap. The flue gas reaches the lower part of the fourth layer of absorption layer 6 from bottom to top through the gas cap, and contacts and reacts with the absorption liquid, and the absorption liquid falls and circulates through the absorption liquid return holes.
Flue gas enters the desulfurizing tower through the inlet flue 1 and sequentially passes through the first absorbing layer 3, the second absorbing layer 4, the third absorbing layer 5, the liquid collecting layer 8, the fourth absorbing layer 6 and the fifth absorbing layer 7.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an example of the structure of the present invention. All the equivalent changes or simple changes made according to the structure, characteristics and principle of the utility model are included in the protection scope of the utility model. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (3)
1. A wet desulphurization high-efficiency absorption structure comprises an inlet flue, a desulphurization tower body, an absorption layer and a liquid collecting layer; the absorption layer is provided with a nozzle; the inlet flue is connected with the desulfurization tower body; the method is characterized in that: the absorption layer comprises a first absorption layer, a second absorption layer, a third absorption layer, a fourth absorption layer and a fifth absorption layer; the first absorption layer, the second absorption layer, the third absorption layer, the liquid collecting layer, the fourth absorption layer and the fifth absorption layer are sequentially arranged in the desulfurization tower body from bottom to top; the nozzles arranged on the first absorption layer, the second absorption layer, the third absorption layer and the fourth absorption layer are bidirectional nozzles, and the spraying directions of the bidirectional nozzles are two directions of reverse smoke and forward smoke; the nozzle arranged on the fifth absorption layer is a one-way nozzle, and the spraying direction of the one-way nozzle is the reverse smoke direction.
2. The wet desulfurization absorption unit according to claim 1, wherein: the inlet flue is conical and gradually expands from the inlet of the inlet flue to the outlet of the inlet flue.
3. The wet desulfurization absorption unit according to claim 1, wherein: the liquid collecting layer is provided with an air cap and absorption liquid backflow holes, and the absorption liquid backflow holes are uniformly distributed around the air cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921743443.4U CN211585978U (en) | 2019-10-17 | 2019-10-17 | High-efficient absorption structure of wet flue gas desulfurization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921743443.4U CN211585978U (en) | 2019-10-17 | 2019-10-17 | High-efficient absorption structure of wet flue gas desulfurization |
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| Publication Number | Publication Date |
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| CN211585978U true CN211585978U (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921743443.4U Active CN211585978U (en) | 2019-10-17 | 2019-10-17 | High-efficient absorption structure of wet flue gas desulfurization |
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| CN (1) | CN211585978U (en) |
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2019
- 2019-10-17 CN CN201921743443.4U patent/CN211585978U/en active Active
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