CN211677160U - White smoke eliminating device of desulfurizing tower - Google Patents
White smoke eliminating device of desulfurizing tower Download PDFInfo
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- CN211677160U CN211677160U CN201922399601.5U CN201922399601U CN211677160U CN 211677160 U CN211677160 U CN 211677160U CN 201922399601 U CN201922399601 U CN 201922399601U CN 211677160 U CN211677160 U CN 211677160U
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Abstract
The utility model discloses a white smoke abatement device of desulfurizing tower, its characterized in that: including the desulfurizing tower, cold media water header, desulfurizing tower left side middle part is equipped with the flue gas import, the exhanst gas outlet department at desulfurizing tower top is connected with clean flue, the clean flue other end is connected with the chimney, the desulfurizing tower bottom is equipped with the thick liquid pond, the inboard upper portion of desulfurizing tower is equipped with the defroster, the top layer thick liquid sprays layer and inferior top layer thick liquid and sprays the layer, the top layer thick liquid sprays the layer and sets up in the defroster below, inferior top layer thick liquid sprays the layer setting and sprays the layer below at the top layer thick liquid, thick liquid pond and top layer thick liquid spray and be connected with top layer thick liquid circulating line between the layer, thick liquid pond and inferior top layer thick liquid spray and be connected with inferior top layer thick liquid circulating line between the layer, all be equipped with slurry circulating. The utility model discloses heating the flue gas after the desulfurization, reducing the carriage rate of liquid drop in the flue gas, reducing flue gas relative humidity.
Description
Technical Field
The utility model relates to a technical field is administered to the flue gas, concretely relates to white cigarette device disappears to desulfurizing tower.
Background
In the atmospheric pollution treatment, the wet desulphurization process has the advantages of high desulphurization efficiency, low investment cost, safe and reliable technology and the like, and is widely adopted by coal-fired power plants. However, the flue gas after wet desulphurization is saturated wet flue gas, generally 45-50 ℃, the water vapor content is in a saturated state, and the flue gas carries a plurality of liquid drops with different sizes. Although the demister is arranged in the desulfurizing tower, the removing capability of the common flat plate demister and folded plate demister to liquid drops with smaller diameter is very limited, and the problem of secondary carrying of the liquid drops is easy to occur, so that a large amount of liquid drops still exist in the flue gas at the outlet of the desulfurizing tower. The liquid drops contain high-concentration acidic ions such as SO4, SO3, Cl, F and the like, SO that the liquid drops are acidic and have strong corrosivity, and the liquid drops are extremely easy to cause compound low-temperature corrosion to a downstream flue and a chimney. And because the smoke discharging temperature is lower, the buoyancy of the smoke is also lower, the diffusion of pollutants in the smoke is very unfavorable, and the concentration of the pollutants near the equipment on the ground is increased. After the low-temperature flue gas is discharged from the chimney, the saturated water vapor condenses when cooled, and a large amount of white mist is formed.
Therefore, a smoke heater is required to be additionally arranged at the inlet of the chimney to heat smoke at the inlet of the chimney, so that the phenomena of corrosion, white smoke emission and chimney rain of the chimney are relieved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a white smoke eliminating device of a desulfurizing tower.
In order to achieve the above object, the present invention provides the following technical solutions:
a white smoke eliminating device of a desulfurizing tower comprises the desulfurizing tower and a refrigerant water main pipe, wherein a flue gas inlet is arranged in the middle of the left side of the desulfurizing tower, a slurry pool is arranged at the bottom of the desulfurizing tower, a demister, a top slurry spraying layer and a secondary top slurry spraying layer are arranged at the upper part of the inner side of the desulfurizing tower, the top slurry spraying layer is arranged below the demister, the secondary top slurry spraying layer is arranged below the top slurry spraying layer, a top slurry circulating pipeline is connected between the slurry pool and the top slurry spraying layer, a secondary top slurry circulating pipeline is connected between the slurry pool and the secondary top slurry spraying layer, a slurry circulating pump and a slurry cooler are respectively arranged on the top slurry circulating pipeline and the secondary top slurry circulating pipeline, the refrigerant water main pipe is respectively connected with a refrigerant water inlet and a refrigerant water outlet at the two ends, the refrigerant water main pipe is divided into two refrigerant water branch pipes, the tail ends of the two refrigerant water branch pipes are converged to the, two coolant water branch pipes are respectively connected with the slurry coolers on the top slurry circulating pipeline and the secondary top slurry circulating pipeline, coolant water in the coolant water branch pipes exchanges heat with slurry passing through the slurry coolers, a coolant water header pipe is provided with a circulating power frequency water pump and an adjusting valve, the circulating power frequency water pump and the adjusting valve are sequentially arranged between a coolant water inlet and the coolant water branch pipes, the coolant water branch pipes are provided with electric switch valves, a flue gas outlet at the top of the desulfurizing tower is connected with a clean flue, the other end of the clean flue is connected with a chimney, a flue gas heater is arranged in the clean flue, the flue gas heater comprises a heat source inlet collecting box, a heat source outlet collecting box and a heating plate, the heating plate is of a hollow structure, and two ends of the heating plate are respectively connected with the heat source inlet, the heat source outlet header is communicated, the heating sheets are S-shaped, the heating sheets are arranged in parallel, and a flue gas circulation channel is formed between the heating sheets.
The two electric switch valves are respectively positioned at a section where the refrigerant water branch pipe enters the slurry cooler and a section where the refrigerant water branch pipe leaves from the slurry cooler.
The top layer slurry circulating pipeline and the secondary top layer slurry circulating pipeline are provided with electric switch valves which are positioned at the slurry circulating pipeline of the inlet of the slurry circulating pump.
The slurry cooler is a plate type or shell-and-tube type heat exchanger and is made of wear-resistant and corrosion-resistant materials.
The slurry cooler is supported by a slurry circulating pipeline fixed at the outlet of the slurry circulating pump through a bracket.
The heat exchange mode between the slurry in the slurry cooler and the refrigerant water is countercurrent heat exchange.
Compared with the prior art, the beneficial effects of the utility model are that: 1. matching with the design of spraying of the desulfurization slurry, slurry coolers are arranged on the slurry circulating pipelines at the top layer and the second top layer, and the slurry coolers can be switched to be used for overhauling one of the slurry circulating pipelines without stopping; 2. the flue gas entering the chimney is heated, so that the carrying rate of liquid drops in the flue gas is reduced, the relative humidity of the flue gas is reduced, and the phenomena of corrosion, white smoke emission and chimney rain of the chimney are relieved.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a sectional view a-a in fig. 1.
Reference numerals: 1. circulating a power frequency water pump; 2. adjusting a valve; 3. an electrically operated on-off valve; 4. a slurry cooler; 5. a secondary top slurry spraying layer; 6. a top slurry spraying layer; 7. a demister; 8. a slurry circulating pump; 9. a desulfurizing tower; 10. a refrigerant water inlet; 11. a top slurry circulation conduit; 12. a secondary top slurry circulation conduit; 13. a coolant water main; 14. a chilled water branch pipe; 15. a refrigerant water outlet; 16. a slurry tank; 17. a flue gas inlet; 18. a chimney; 19. a heat source inlet header; 20. a heat source outlet header; 21. a heating plate; 22. and (5) cleaning the flue.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to fig. 1-2.
A white smoke eliminating device of a desulfurizing tower comprises a desulfurizing tower 9 and a refrigerant water main pipe 13, wherein a flue gas inlet 17 is arranged in the middle of the left side of the desulfurizing tower 9, a slurry pool 16 is arranged at the bottom of the desulfurizing tower 9, a demister 7, a top layer slurry spraying layer 6 and a second top layer slurry spraying layer 5 are arranged at the upper part of the inner side of the desulfurizing tower 9, the top layer slurry spraying layer 6 is arranged below the demister 7, the second top layer slurry spraying layer 5 is arranged below the top layer slurry spraying layer 6, a top layer slurry circulating pipeline 11 is connected between the slurry pool 16 and the top layer slurry spraying layer 6, a second top layer slurry circulating pipeline 12 is connected between the slurry pool 16 and the second top layer slurry spraying layer 5, a slurry circulating pump 8 and a slurry cooler 4 are respectively arranged on the top layer slurry circulating pipeline 11 and the second top layer slurry circulating pipeline 12, the refrigerant water main pipe 13 is respectively connected with a refrigerant water inlet 10 and a refrigerant water outlet 15, the refrigerant water main pipe 13 is divided into two, the tail ends of the two refrigerant water branch pipes 14 are converged to a refrigerant water main pipe 13, the two refrigerant water branch pipes 14 are respectively connected with a top layer slurry circulating pipeline 11 and a slurry cooler 4 on a secondary top layer slurry circulating pipeline 12, refrigerant water in the refrigerant water branch pipes 14 exchanges heat with slurry passing through the slurry cooler 4, a circulating power frequency water pump 1 and a regulating valve 2 are arranged on the refrigerant water main pipe 13, the circulating power frequency water pump 1 and the regulating valve 2 are sequentially arranged between a refrigerant water inlet 10 and the refrigerant water branch pipes 14, an electric switch valve 3 is arranged on the refrigerant water branch pipes 14, a flue gas outlet at the top of the desulfurizing tower 9 is connected with a clean flue 22, the other end of the clean flue 22 is connected with a chimney 18, a flue gas heater is arranged in the clean flue gas flue 22 and comprises a heat source inlet collecting box 19, a heat source outlet collecting box 20 and heating sheets 21, the heating sheets 21 are of a hollow structure, and two ends of the heating sheets 21 are respectively connected with, The heat source outlet header 20 is communicated, the heating sheets 21 are S-shaped, the heating sheets 21 are arranged in parallel, and a smoke circulation channel is formed between the heating sheets 21.
Two electric switch valves 3 are arranged on the refrigerant water branch pipe 14, and the two electric switch valves 3 are respectively positioned on a section of the refrigerant water branch pipe 14 entering the slurry cooler 4 and a section of the refrigerant water branch pipe 14 leaving from the slurry cooler 4.
The top layer slurry circulating pipeline 11 and the secondary top layer slurry circulating pipeline 12 are provided with electric switch valves 3 which are positioned at the slurry circulating pipeline at the inlet of the slurry circulating pump 8.
The slurry cooler 4 is a plate type or shell-and-tube type heat exchanger and is made of wear-resistant and corrosion-resistant materials.
The slurry cooler 4 is supported by a slurry circulating pipeline fixed at the outlet of the slurry circulating pump 8 through a bracket.
The heat exchange mode between the slurry in the slurry cooler 4 and the refrigerant water is countercurrent heat exchange.
Flue gas enters the desulfurizing tower 9 from the flue gas inlet 17, sequentially passes through the secondary top slurry spraying layer 5, the top slurry spraying layer 6 and the demister 7, and is discharged from the top to enter the clean flue 22. Refrigerant water enters a refrigerant water header pipe 13 from a refrigerant water inlet 10, is boosted by a circulating power frequency water pump 1, and enters a slurry cooler 4 to exchange heat with slurry. The slurry cooler 4 is arranged on a slurry circulating pipeline at the outlet of the slurry circulating pump 8 and is supported and fixed by a bracket. One slurry cooler 4 is disposed in each of the top slurry circulation pipe 11 and the second top slurry circulation pipe 12. The side of the slurry cooler 4 is provided with a cold source inlet and a cold source outlet respectively, the refrigerant water branch pipe 14 is connected with the cold source inlet and the cold source outlet, and the electric switch valve 3 is arranged at one section of the refrigerant water branch pipe connected with the cold source inlet and one section of the refrigerant water branch pipe connected with the cold source outlet and used for switching the slurry cooler 4. In operation, in cooperation with the operation of the desulfurization system, the slurry cooler 4 on the top slurry circulation pipeline 11 or the slurry cooler 4 on the secondary top slurry circulation pipeline 12 is operated, and simultaneously, the electric switch valve 3 on the refrigerant water branch pipe 14 of the operating slurry cooler 4 is opened, and the electric switch valve 3 on the refrigerant water branch pipe 14 of the non-operating slurry cooler 4 is closed. After the slurry cooler 4 is blocked, the electric switch valve 3 on the refrigerant water branch pipe 14 of the blocked slurry cooler 4 is closed, and the electric switch valve 3 on the refrigerant water branch pipe 14 of the other slurry cooler 4 is opened, so that the non-stop maintenance is realized.
And a regulating valve 2 is arranged behind the circulating power frequency water pump 1, so that the flow of the refrigerant water can be regulated. In general, the amount of refrigerant water needed in summer is large, and at this time, the opening degree of the regulating valve 2 is increased to increase the amount of refrigerant water; in winter, the opening degree of the regulating valve 2 is reduced, the amount of the refrigerant water is reduced, and the water imbalance of the desulfurization system caused by too much flue gas condensate water due to too much refrigerant water is avoided. Meanwhile, when the load of the power plant changes, the opening of the adjusting valve 2 can be adjusted according to the change of the load, the amount of the refrigerant water is adjusted, and the emission requirement is met.
The smoke heater is arranged in the clean smoke channel 22, when smoke containing fog drops flows between the adjacent heating sheets 21 after coming out of the desulfurization tower, the smoke and a heat source in the heating sheets 21 exchange heat to be heated, the carrying rate of the liquid drops in the smoke is reduced, the relative humidity of the smoke is reduced, and the downstream smoke channel and a chimney are protected.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. The utility model provides a white cigarette device disappears to desulfurizing tower which characterized in that: the desulfurization tower comprises a desulfurization tower and a refrigerant water main pipe, wherein a flue gas inlet is arranged in the middle of the left side of the desulfurization tower, a slurry pool is arranged at the bottom of the desulfurization tower, a demister, a top layer slurry spraying layer and a secondary top layer slurry spraying layer are arranged at the upper part of the inner side of the desulfurization tower, the top layer slurry spraying layer is arranged below the demister, the secondary top layer slurry spraying layer is arranged below the top layer slurry spraying layer, a top layer slurry circulating pipeline is connected between the slurry pool and the top layer slurry spraying layer, a secondary top layer slurry circulating pipeline is connected between the slurry pool and the secondary top layer slurry spraying layer, a slurry circulating pump and a slurry cooler are respectively arranged on the top layer slurry circulating pipeline and the secondary top layer slurry circulating pipeline, the refrigerant water main pipe is respectively connected with a refrigerant water inlet and a refrigerant water outlet at two ends, the refrigerant water main pipe is divided into two refrigerant water branch pipes, and the tail ends of the two refrigerant water branch pipes are converged, the two refrigerant water branch pipes are respectively connected with the slurry coolers on the top layer slurry circulating pipeline and the secondary top layer slurry circulating pipeline, refrigerant water in the refrigerant water branch pipes exchanges heat with slurry passing through the slurry coolers, the refrigerant water main pipe is provided with a circulating power frequency water pump and an adjusting valve, the circulating power frequency water pump and the adjusting valve are sequentially arranged between a refrigerant water inlet and the refrigerant water branch pipes, the refrigerant water branch pipes are provided with electric switch valves, a flue gas outlet at the top of the desulfurization tower is connected with a clean flue, the other end of the clean flue is connected with a chimney, a flue gas heater is arranged in the clean flue and comprises a heat source inlet collecting box, a heat source outlet collecting box and a heating piece, the heating piece is of a hollow structure, the two ends of the heating piece are respectively communicated with the heat source inlet collecting box and the heat source outlet collecting box, and the heating piece is S-shaped, the heating plates are arranged in parallel, and a smoke circulation channel is formed between the heating plates.
2. The white smoke abatement device of claim 1, wherein: the two electric switch valves are respectively positioned at a section where the chilled water branch pipe enters the slurry cooler and a section where the chilled water branch pipe leaves from the slurry cooler.
3. The white smoke abatement device of claim 1, wherein: and the top layer slurry circulating pipeline and the secondary top layer slurry circulating pipeline are provided with electric switch valves, and the electric switch valves are positioned at the slurry circulating pipeline at the inlet of the slurry circulating pump.
4. The white smoke abatement device of claim 1, wherein: the slurry cooler is a plate type or shell-and-tube type heat exchanger.
5. The white smoke abatement device of claim 1, wherein: the slurry cooler is supported by a support and fixed on a slurry circulating pipeline at the outlet of the slurry circulating pump.
6. The white smoke abatement device of claim 1, wherein: the heat exchange mode between the slurry in the slurry cooler and the refrigerant water is countercurrent heat exchange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922399601.5U CN211677160U (en) | 2019-12-27 | 2019-12-27 | White smoke eliminating device of desulfurizing tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922399601.5U CN211677160U (en) | 2019-12-27 | 2019-12-27 | White smoke eliminating device of desulfurizing tower |
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| Publication Number | Publication Date |
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| CN211677160U true CN211677160U (en) | 2020-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922399601.5U Active CN211677160U (en) | 2019-12-27 | 2019-12-27 | White smoke eliminating device of desulfurizing tower |
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| CN (1) | CN211677160U (en) |
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- 2019-12-27 CN CN201922399601.5U patent/CN211677160U/en active Active
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