CN211837118U - Circulating water desulfurization system - Google Patents
Circulating water desulfurization system Download PDFInfo
- Publication number
- CN211837118U CN211837118U CN202020534227.5U CN202020534227U CN211837118U CN 211837118 U CN211837118 U CN 211837118U CN 202020534227 U CN202020534227 U CN 202020534227U CN 211837118 U CN211837118 U CN 211837118U
- Authority
- CN
- China
- Prior art keywords
- circulating water
- absorption tower
- circulating
- desulfurization
- water spray
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a circulating water desulfurization system, including first absorption tower, second absorption tower, dust collector, circulating water spray set, circulating pump, water tank and smoke exhaust chimney, the exhaust end of first absorption tower and the inlet end intercommunication of second absorption tower, dust collector set up in the exhaust end of second absorption tower, and circulating water spray set sets up in dust collector's exhaust end, and circulating water spray set's water inlet passes through the circulating pump to be connected with the water tank, and smoke exhaust chimney and circulating water spray set's exhaust end intercommunication. The utility model discloses a circulating water desulfurization system through increase circulating water spray set in current desulfurization system, carries out the secondary desulfurization operation to the flue gas that the sulphur content still exceeds standard among the prior art behind the desulfurization process, when having satisfied the fume emission standard, has avoided accomplishing coal fired power plant daily desulfurization process through increasing electric energy and lime stone, greatly reduced the electric energy and the lime stone quantity in the coal fired power plant daily desulfurization process, reduction in production cost.
Description
Technical Field
The utility model relates to an energy environmental protection technical field, in particular to circulating water desulfurization system.
Background
Pollutants generated by coal-fired power plants and industrial boilers are main sources of atmospheric environmental pollution, the emission limit value of sulfur dioxide of the latest emission standard (GB13223-2011) of the atmospheric pollution of thermal power plants is changed from 100mg/Nm3 to 35mg/Nm3, and the domestic thermal power plants basically finish ultra-clean emission reconstruction, however, most reconstruction is based on the existing desulfurization system, the flue gas is pressurized by a draught fan and sequentially enters a primary absorption tower and a secondary absorption tower, sulfur-containing substances in the flue gas in the primary absorption tower and the secondary absorption tower are washed by circulating slurry flowing downwards in a countercurrent mode by the flue gas flowing upwards, SO2, SO3, HCL, HF and the like are removed, the desulfurization process is finished, the purified flue gas is dedusted by a wet type electric precipitator to remove dust in the flue gas, the clean flue gas enters a chimney through an electric precipitation flue and is discharged to the atmosphere, however, the method reduces the content of sulfur dioxide in the flue gas by increasing the electric energy and the limestone, and the increase of the electric energy and the limestone greatly improves the daily desulfurization cost of the coal-fired power plant and seriously influences the normal production of the coal-fired power plant.
Therefore, how to effectively utilize the circulating water to perform the desulfurization process is a technical problem that needs to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a circulating water desulfurization system through increase circulating water desulfurization process in current desulfurization system, carries out the secondary desulfurization operation to the flue gas that desulfurization process back sulfur content still exceeds standard among the prior art, has satisfied the fume emission standard.
For solving the technical problem, the utility model provides a circulating water desulfurization system, including first absorption tower, second absorption tower, dust collector, circulating water spray set, circulating pump, water tank and smoke exhaust chimney, the exhaust end of first absorption tower with the inlet end intercommunication of second absorption tower, dust collector set up in the exhaust end of second absorption tower, circulating water spray set up in dust collector's exhaust end, circulating water spray set's water inlet passes through the circulating pump with the water tank is connected, smoke exhaust chimney with circulating water spray set's exhaust end intercommunication.
Preferably, the system also comprises a water cooling tower connected with a water outlet of the circulating water spraying device.
Preferably, an electric regulating valve is arranged between the circulating pump and the circulating water spraying device.
Preferably, the circulating water spray devices are internally provided with circulating water spray heads at equal intervals.
Preferably, the distance between the circulating water spray heads is 1-2 m, and the water pressure in the circulating water spray heads is 0.2-0.3 MPa.
Preferably, the circulating water nozzle is a corner hollow type nozzle.
Preferably, the absorption tower further comprises a fan arranged at the air inlet end of the first absorption tower.
Preferably, the dust removing device is a wet electric dust remover.
The utility model provides a circulating water desulfurization system, including first absorption tower, second absorption tower, dust collector, circulating water spray set, circulating pump, water tank and smoke exhaust chimney, the exhaust end of first absorption tower and the inlet end intercommunication of second absorption tower, dust collector set up in the exhaust end of second absorption tower, and circulating water spray set sets up in dust collector's exhaust end, and circulating water spray set's water inlet passes through the circulating pump to be connected with the water tank, and smoke exhaust chimney and circulating water spray set's exhaust end intercommunication.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic overall structure diagram of a specific embodiment of the present invention.
Wherein, in fig. 1:
the device comprises a first absorption tower-1, a second absorption tower-2, a dust removal device-3, a circulating water spraying device-4, a circulating pump-5, a water tank-6, a smoke exhaust chimney-7, a water cooling tower-8, an electric regulating valve-9, a circulating water spray head-10 and a fan-11.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic diagram of an overall structure of an embodiment of the present invention. Wherein the arrows in the figure indicate the gas or liquid flow direction.
The utility model provides an among the specific embodiment, mainly include first absorption tower 1, second absorption tower 2, dust collector 3, circulating water spray set 4, circulating pump 5, water tank 6 and smoke exhaust chimney 7, the exhaust end of first absorption tower 1 and the inlet end intercommunication of second absorption tower 2, dust collector 3 sets up in the exhaust end of second absorption tower 2, circulating water spray set 4 sets up in dust collector 3's exhaust end, circulating water spray set 4's water inlet passes through circulating pump 5 and is connected with water tank 6, smoke exhaust chimney 7 and circulating water spray set 4's exhaust end intercommunication.
Wherein, first absorption tower 1, second absorption tower 2 and dust collector 3 still are prior art's desulfurization, the dust removal technology, circulation water spray set 4 sets up in dust collector 3's exhaust end for carry out the secondary desulfurization operation to dust collector 3 exhaust flue gas, circulating pump 5 is used for carrying the desulfurization water in the water tank 6 to circulation water spray set 4, water tank 6 is used for the water source of 4 desulfurization water of circulation water spray set, smoke exhaust chimney 7 is used for discharging the flue gas of 4 secondary desulfurization of circulation water spray set.
Specifically, in the middle of the practical application process, coal-fired flue gas enters into first absorption tower 1 and second absorption tower 2 in proper order and carries out a desulfurization operation, flue gas through a desulfurization discharges from the gas vent of second absorption tower 2 and enters into dust collector 3, dust collector 3 carries out the dust removal operation to flue gas after a desulfurization, after the dust removal operation is accomplished, flue gas enters into circulating water spray set 4 from the gas vent of dust collector 3, circulating pump 5 takes out the desulfurization water in water tank 6, carry to circulating water spray set 4, circulating water spray set 4 carries out the secondary desulfurization operation to the flue gas, flue gas through the secondary desulfurization enters into smoke exhaust chimney 7, smoke exhaust chimney 7 discharges the flue gas that reaches the desulfurization standard to the air, accomplish the flue gas emission.
In order to optimize the advantage that the circulating water desulfurization system in the above embodiment has the advantage of reducing the daily production cost of the coal-fired power plant and the advantage of environmental protection, the circulating water desulfurization system further includes a cooling tower 8 connected to the water discharge port of the circulating water spray device 4. After the secondary desulfurization process of the flue gas is completed by the circulating water spraying device 4, circulating water for secondary desulfurization is conveyed to the water cooling tower 8 through a circulating water return pipe, in the scheme, the secondary desulfurization water for the circulating water spraying device 4 is cooling water for the coal-fired unit condenser, the water cooling tower 8 is a water pool for storing the circulating cooling water, the volume of the water cooling tower 8 is large, the test data in the scheme is 3.5 thousands of cubes, the return water amount of the desulfurization water for the circulating water spraying device 4 is about 150t/h, the influence on the water quality of the water cooling tower 8 can be ignored, the desulfurization water flows back to the water cooling tower 8 and can be continuously utilized by the coal-fired unit condenser, the circulating water is utilized by the coal-fired unit condenser and flows back to the water tank 6, the secondary desulfurization is continuously used, the recycling is realized, the daily production cost. It should be noted that, after the flue gas passes through the circulating water spraying device 4, the PH value of the return water of the circulating water spraying device 4 is reduced by about 1, and the return water directly returns to the water cooling tower 8, so that the PH value of the circulating water in the water cooling tower 8 is reduced, the amount of sulfuric acid added into the water cooling tower 8 is reduced, and the daily production cost is reduced.
In order to better carry out the desulfurization operation on the flue gas, an electric regulating valve 9 is arranged between the circulating pump 5 and the circulating water spraying device 4; the circulating water spray devices 4 are internally provided with circulating water spray heads 10 at equal intervals. Electric control valve 9 can control circulating water shower nozzle 10 and spray the water yield, can come through electric control valve 9 control circulating water shower nozzle 10 spray the water yield through the second grade desulfurization demand, for example, flue gas before the second grade desulfurization contains the sulfur content when higher, can suitably increase the water yield that sprays of circulating water shower nozzle 10 through electric control valve 9, satisfy the second grade desulfurization operation of flue gas, flue gas before the second grade desulfurization contains the sulfur content when lower, can suitably reduce the water yield that sprays of circulating water shower nozzle 10 through electric control valve 9, satisfy the second grade desulfurization operation of flue gas, through real-time adjustment, smoke emission standard has been satisfied, and simultaneously, the desulfurization cost has been reduced.
Furthermore, the space between the circulating water nozzles 10 is 1 m-2 m, and the water pressure in the circulating water nozzles 10 is 0.2 MPa-0.3 MPa. In an actual test, the circulating water spray head 10 is connected with the circulating water spray device 4, the arrangement area of the nozzles of the circulating water spray head 10 is 400m3, the distance between every two nozzles is 1 m-2 m, 100 nozzles are arranged in total, the flow of the circulating water spray is controlled at 130m 3-160 m3, the water pressure is controlled at 0.2 mPa-0.3 mPa, the spraying atomization coverage rate is 120% -140%, the atomization effect on the circulating water is ensured, and the SO2 absorption effect of the circulating water is improved.
It should be noted that the circulating water spray head 10 is a corner hollow type spray nozzle. The hollow nozzle of corner can ensure that the water that sprays out contacts the flue gas with the biggest area, plays better desulfurization effect, has reduced the operating cost to a certain extent.
Further, the circulating water desulfurization system further comprises a fan 11 arranged at the air inlet end of the first absorption tower 1. Before the flue gas enters the first absorption tower 1, the flue gas is pumped by the fan 11, so that the speed of the flue gas entering the first absorption tower 1 can be increased, and the desulfurization efficiency is improved.
It should be noted that the dust removing device 3 is a wet electric dust remover. The circulating water spraying device 4 is arranged behind the wet-type electric dust collector, the dust content in the flue gas is low, the circulating water spraying device 4 is ensured to have less impurities in the water after the flue gas is desulfurized, the desulfurizing effect of the circulating water spraying device 4 can be ensured, the water quality can be ensured not to be polluted, the circulating water can be recycled by a condensate machine of a coal burner group, and the environment-friendly effect is achieved; in addition, the circulating water spraying device 4 is arranged after wet-type electric precipitation, the temperature of flue gas is 46-55 ℃, the evaporation capacity is small, the water consumption is saved to the maximum extent, and the production cost is reduced.
In conclusion, the circulating water desulfurization system that this embodiment provided mainly includes first absorption tower, second absorption tower, dust collector, circulating water spray set, circulating pump, water tank and the chimney of discharging fume, the exhaust end of first absorption tower and the inlet end intercommunication of second absorption tower, dust collector sets up in the exhaust end of second absorption tower, circulating water spray set sets up in dust collector's exhaust end, circulating water spray set's water inlet passes through the circulating pump and is connected with the water tank, the chimney of discharging fume communicates with circulating water spray set's exhaust end. The utility model discloses a circulating water desulfurization system through increase circulating water spray set in current desulfurization system, carries out the secondary desulfurization operation to the flue gas that the sulphur content still exceeds standard among the prior art behind the desulfurization process, when having satisfied the fume emission standard, has avoided accomplishing coal fired power plant daily desulfurization process through increasing electric energy and lime stone, greatly reduced the electric energy and the lime stone quantity in the coal fired power plant daily desulfurization process, reduction in production cost.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The utility model provides a circulating water desulfurization system, its characterized in that, includes first absorption tower (1), second absorption tower (2), dust collector (3), circulating water spray set (4), circulating pump (5), water tank (6) and smoke exhaust chimney (7), the exhaust end of first absorption tower (1) with the inlet end intercommunication of second absorption tower (2), dust collector (3) set up in the exhaust end of second absorption tower (2), circulating water spray set (4) set up in the exhaust end of dust collector (3), the water inlet of circulating water spray set (4) passes through circulating pump (5) with water tank (6) are connected, smoke exhaust chimney (7) with the exhaust end intercommunication of circulating water spray set (4).
2. The system for desulfurizing circulating water according to claim 1, further comprising a cooling tower (8) connected to a water discharge port of the circulating water spray device (4).
3. A system for desulphurizing circulating water according to claim 2, characterized in that an electrically operated regulating valve (9) is provided between the circulating pump (5) and the circulating water spraying device (4).
4. A circulating water desulphurization system according to claim 3, wherein the circulating water spray devices (4) are internally provided with circulating water spray heads (10) at equal intervals.
5. The circulating water desulfurization system according to claim 4, characterized in that the distance between the circulating water nozzles (10) is 1-2 m, and the water pressure in the circulating water nozzles (10) is 0.2-0.3 MPa.
6. The system for desulphurizing circulating water according to claim 5, characterized in that said circulating water nozzles (10) are of the corner hollow type.
7. The circulating water desulfurization system according to claim 1, further comprising a fan (11) disposed at an inlet end of the first absorption tower (1).
8. The system for desulfurizing circulating water according to claim 1, characterized in that said dust-removing device (3) is a wet electric precipitator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020534227.5U CN211837118U (en) | 2020-04-13 | 2020-04-13 | Circulating water desulfurization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020534227.5U CN211837118U (en) | 2020-04-13 | 2020-04-13 | Circulating water desulfurization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211837118U true CN211837118U (en) | 2020-11-03 |
Family
ID=73143922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020534227.5U Active CN211837118U (en) | 2020-04-13 | 2020-04-13 | Circulating water desulfurization system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211837118U (en) |
-
2020
- 2020-04-13 CN CN202020534227.5U patent/CN211837118U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101579602B (en) | Energy-saving and high-quality ammonia desulphurization process for ammonia sulfate recovery | |
| CN202823151U (en) | Multistage spray efficient wet process of flue gas desulfurization and synergistic mercury removal integrated device | |
| CN103785255A (en) | Efficient fuel gas treatment system for boiler | |
| CN101940870A (en) | Device for removing sulfur dioxide in flue gas | |
| CN105536462A (en) | Glass furnace kiln burnt petroleum coke high-temperature flue gas purification device and purification method | |
| CN201889155U (en) | Removal device for sulfur dioxide in smoke | |
| CN101927125B (en) | Dual-circulation absorption tower | |
| CN103691295A (en) | Horizontal semi-dry process desulfurization device of flue at tail part of boiler | |
| CN211837118U (en) | Circulating water desulfurization system | |
| CN202207546U (en) | Device for reducing water consumption of wet flue gas desulfurization | |
| CN111135698A (en) | Sintering flue gas desulfurization, white removal and denitration comprehensive treatment system and process | |
| CN208943818U (en) | A kind of zero water consume wet desulphurization device | |
| CN212680630U (en) | Novel desulfurizing tower | |
| CN210057743U (en) | Smoke discharge treatment device for coal-fired furnace | |
| CN201249101Y (en) | Two-stage parallel spray thionizer | |
| CN210845774U (en) | Desulfurization and denitrification flue gas whitening system | |
| CN211328868U (en) | High-efficient gas desulfurization device | |
| CN211487169U (en) | Sodium-alkali method desulphurization device | |
| CN210219835U (en) | System for removing white smoke after desulfurization and GGH heating method | |
| CN209475967U (en) | A kind of ultralow temperature denitrification apparatus of combination double alkali method desulfurizing technology | |
| CN210159445U (en) | Industrial waste gas's desulfurization dust collector | |
| CN203710904U (en) | Transverse semi-drying desulfurization device for tail flue of boiler | |
| CN210021715U (en) | Desulfurization prewashing reaction unit | |
| CN112717678A (en) | Industrial furnace dry desulphurization device and desulphurization method | |
| CN219559239U (en) | Double-material efficient desulfurization dust removal ultralow emission system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |