CN210186850U - Synergistic semi-dry desulfurization system - Google Patents
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- CN210186850U CN210186850U CN201920723312.3U CN201920723312U CN210186850U CN 210186850 U CN210186850 U CN 210186850U CN 201920723312 U CN201920723312 U CN 201920723312U CN 210186850 U CN210186850 U CN 210186850U
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Abstract
The utility model provides a semidry desulfurization system of efficiency enhancement, including alkali lye storage tank, water tank, lime hydrate powder storehouse, and consecutive air inlet flue, desulfurizing tower, sack cleaner and chimney. The tower bottom of the desulfurizing tower is connected with a Venturi tube, an air inlet flue is communicated with the Venturi tube, and an alkali liquor storage tank is connected with a water tank through an alkali liquor pipeline; the water tank is provided with a pH transmitter, and the water in the water tank is alkaline and is supplied by the pH transmitterThe water pipeline is communicated to the inside of the Venturi tube and is connected with the spray gun; the slaked lime powder bin is communicated with the inside of the Venturi tube through a slaked lime pipeline. The bag-type dust collector is connected with the ash hopper and the chute, and the chute is communicated with the Venturi tube; an exhaust port of the bag-type dust collector is connected with an exhaust flue and communicated to a chimney; the water supply line further comprises a return line connected to the water tank; or the tail end of the water supply pipeline is communicated with the compressed air pipeline. The desulfurization system can effectively remove SO in the outlet flue gas2The concentration is reduced to less than or equal to 35mg/Nm3The desulfurization efficiency can reach 95-98%, the operation is simple, and the economy is high.
Description
Technical Field
The utility model belongs to the technical field of flue gas desulfurization, specifically speaking is about a semidry desulfurization system of efficiency enhancement.
Background
The flue gas tail gas discharged by boilers of coal-fired power plants and various industrial kilns contains harmful components such as SO2, nitrogen oxides and the like, is the chief culprit in forming acid rain and haze and destroying the ecological environment, and seriously influences the sustainable development of the economic society of China and the survival and health of human beings.
9 months in 2014, file issued by three committees in China- "coal energy conservation and emission reduction upgrading and transformation plan (2016-2020). The file requires that in 2020, 60 ten thousand kilowatts and above coal-fired units are in active service, 30 ten thousand kilowatts and above public coal-fired generating sets in eastern areas, 10 kilowatts and above self-provided coal-fired generating sets and other conditional coal-fired generating sets are in active service, the emission concentration of the air pollutants after modification basically reaches or approaches the emission limit value of a gas turbine set, and the smoke dust is less than or equal to 10mg/Nm3、SO2≤35mg/Nm3Nitrogen oxides less than or equal to 50mg/Nm3。
The existing common flue gas desulfurization systems comprise a semi-dry desulfurization system and a wet desulfurization system. Compared with the traditional flue gas semi-dry desulfurization system, hydrated lime is singly used as a desulfurization absorbent, and the system comprises a desulfurization tower, a slaked lime bin, a bag-type dust remover and other equipment. Dust and SO contained in the exhaust gas from the boiler2The flue gas enters the desulfurizing tower from the bottom of the desulfurizing tower, a certain amount of slaked lime is added from the bottom of the desulfurizing tower, process water is sprayed from the bottom of the desulfurizing tower, and the powdery slaked lime and the water flow in the desulfurizing tower in a mixing way with the flue gas and are mixed with SO in the flue gas2And reacting to generate calcium sulfite and calcium sulfate. The flue gas carrying the reaction product and the coal ash enters a cyclone separator and then enters a cloth bag to be removedAfter being treated by the dust collector, the dust returns to the desulfurizing tower through the air chute and circularly participates in the desulfurizing reaction again. Although the slaked lime, the coal ash and the reaction products circulate between the desulfurizing tower and the bag-type dust collector for many times, the reaction time is increased, the function of the slaked lime can be fully exerted, the desulfurizing efficiency is improved, and the consumption of the slaked lime is reduced. But the desulfurization efficiency is about 80-90%, and SO in the ultra-clean emission of the flue gas which still cannot meet the existing standard2The concentration requirement of (2). Compared with a semi-dry desulfurization system, the wet desulfurization system adopts cheap desulfurizer, has higher desulfurization efficiency, but has large investment and serious equipment corrosivity, and the washed flue gas needs to be reheated, so that the energy consumption is high, the occupied area is large, the system is complex, the equipment is huge, and the investment cost is high; and the product is liquid or sludge, which is difficult to treat, the water consumption for wastewater treatment is large, and the operating cost is high.
In order to improve the desulfurization efficiency and ensure SO in the outlet flue gas2The semi-dry desulfurization system in the prior art improves a desulfurization tower spraying system, increases the consumption of slaked lime and process water, and improves the desulfurization efficiency by increasing the calcium-sulfur ratio and reducing the operation temperature of the desulfurization tower. However, the method has the advantages that the electricity consumption is obviously increased and the operation cost is obviously increased due to the increase of the conveying capacity and the water quantity of the slaked lime, and the scale formation in the desulfurizing tower is easily caused due to the fact that the water spraying quantity in the desulfurizing tower is larger and the reaction temperature in the desulfurizing tower is lower on the contrary, so that the subsequent bag pasting problem of the bag-type dust remover is caused. The desulfurization effect of the method is improved to a certain extent but not higher than 95 percent, and when SO in the inlet flue gas is reduced2When the concentration is higher, the SO in the discharged flue gas still cannot be ensured2The concentration is less than or equal to 35mg/Nm3。
Therefore, there is a need to design a novel semi-dry desulfurization system to overcome the above technical problems in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the SO in the outlet flue gas of the prior semi-dry desulfurization system2The technical defect that the concentration does not reach the standard is provided, and a synergistic semi-dry desulfurization system is provided.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
synergistic semi-dry desulfurization system, including alkali lye storage tank, water tank, slaked lime powder storehouse, and consecutive air inlet flue, desulfurizing tower, sack cleaner and chimney, wherein:
the tower bottom of the desulfurizing tower is connected with a Venturi tube, the air inlet flue is communicated with the Venturi tube, the alkali liquor storage tank is connected with the water tank through an alkali liquor pipeline, and an alkali liquor metering pump is installed on the alkali liquor pipeline; the water tank is communicated to the inside of the Venturi tube through a water supply pipeline and is connected with a spray gun, and a water supply pump is arranged on the water supply pipeline; the water tank is provided with a pH transmitter, and the pH transmitter detects the pH value of water in the water tank in real time so as to control the water in the water tank to be alkaline; the slaked lime powder bin is communicated with the inside of the Venturi tube through a slaked lime pipeline;
an ash discharge port of the bag-type dust collector is connected with an ash hopper, the ash hopper is communicated with a chute, the chute is communicated with the Venturi tube, the ash hopper and the chute are also respectively connected with an ash hopper fluidization pipeline and a chute fluidization pipeline, an ash hopper fluidization fan and a first electric heater are arranged on the ash hopper fluidization pipeline, and a chute fluidization fan and a second electric heater are arranged on the chute fluidization pipeline; an exhaust port of the bag-type dust collector is connected with an exhaust flue, and an induced draft fan is mounted on the exhaust flue and communicated to the chimney;
the water supply line further comprises a return line connected to the water tank; or the tail end of the water supply pipeline is communicated with a compressed air pipeline.
Preferably, an electromagnetic flowmeter is arranged on the alkali liquor pipeline, and a remote liquid level meter is arranged on the alkali liquor storage tank.
Preferably, the alkali liquor metering pumps are provided with two pumps, one is opened and the other is prepared; the water supply pump has two sets, one set is opened and the other set is prepared.
Preferably, the water tank is connected with an external process water pipeline, and the alkali liquor storage tank is connected with an external alkali liquor pipeline.
Preferably, the air-conditioning system further comprises a return air flue, wherein the return air flue is communicated to the air inlet flue from an air exhaust flue behind the induced draft fan, and a return air flue plate door is arranged on the return air flue.
Preferably, the device further comprises a cyclone separator, wherein an air inlet of the cyclone separator is connected with a flue gas outlet of the desulfurizing tower, and an air outlet of the cyclone separator is connected with an air inlet of the bag-type dust collector.
Preferably, the desulfurization ash storage device further comprises a buffering ash bin communicated with the ash bucket, and the buffering ash bin is connected with the desulfurization ash storage through a bin pump.
According to the utility model discloses, still including setting up on the lime hydrate pipeline for carry the conveying fan of lime hydrate powder.
Preferably, the water supply line has a plurality of branch lines, and the branch lines are distributed in a height direction of the desulfurization tower.
Preferably, the bag-type dust collector further comprises a compressed air storage tank, and the compressed air storage tank is connected with the bag-type dust collector blowing system.
Preferably, the pH value of the water in the water tank is controlled to be 7.5-8.5 in real time through the pH transmitter.
Compared with the prior art, the utility model discloses following beneficial technological effect has:
the utility model discloses a desulfurization system is introduced with alkali lye to increase semidry desulfurization system to mix with external process water, allot into alkaline water supply, be arranged in with the SO of slaked lime powder together with the flue gas in2Carrying out reaction; the ash hopper connecting pipeline and the chute connecting pipeline are arranged, and hot air is used for heating and blowing ash in the ash hopper and the chute, so that the ash is not caked and accumulated, the cyclic utilization rate of the ash can be improved, the desulfurization efficiency is improved, and the normal operation of the ash hopper and the chute is guaranteed.
The utility model discloses a synergistic semi-dry desulfurization system can be effectively with SO in the export flue gas2The concentration is reduced to less than or equal to 35mg/Nm3The method meets the national emission standard, and the desulfurization efficiency can reach 95-98%. Compared with the existing semi-dry desulfurization system, the desulfurization effect is obviously improved, the operation is simple, the investment and the operating cost are low, and the economy is high.
Drawings
Fig. 1 is a process flow diagram of the enhanced semidry desulfurization system of example 1.
FIG. 2 is a process flow diagram of the enhanced semidry desulfurization system of example 2.
In the figure: 10-an alkali liquor storage tank, 20-a water tank, 30-a slaked lime powder bin, 40-an air inlet flue, 50-a desulfurizing tower, 60-a bag-type dust remover, 70-a chimney, 80-an ash hopper, 90-a chute, 100-an air exhaust flue, 110-an air return flue, 120-a buffering ash bin, 130-a desulfurizing ash bin, 140-a compressed air storage tank and 150-a cyclone separator;
11-alkali liquor pipeline, 12-alkali liquor metering pump, 13-electromagnetic flowmeter, 14-external alkali liquor pipeline, 22-water supply pump, 23-pH transmitter, 24-return pipeline, 25-external process water pipeline, 31-lime hydrate pipeline, 32-conveying fan, 51-Venturi tube, 81-ash bucket fluidization pipeline, 82-ash bucket fluidization fan, 83-first electric heater, 91-chute fluidization pipeline, 92-chute fluidization fan, 93-second electric heater, 101-induced draft fan, 111-return air flue plate door and 121-bin pump.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings by specific embodiments. It should be understood that the following examples are illustrative only and are not intended to limit the scope of the present invention.
When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus or methods consistent with certain aspects of the application, as detailed in the claims that follow.
Example 1
The embodiment provides a synergistic semi-dry desulfurization system, including alkali lye storage tank 10, water tank 20, slaked lime powder storehouse 30, and consecutive air inlet flue 40, desulfurizing tower 50, sack cleaner 60 and chimney 70, wherein:
the tower bottom of the desulfurizing tower 50 is connected with a Venturi tube 51, the air inlet flue 40 is communicated with the Venturi tube 51, the alkali liquor storage tank 10 is connected with the water tank 20 through an alkali liquor pipeline 11, and an alkali liquor metering pump 12 is installed on the alkali liquor pipeline 11; the water tank 20 is communicated to the inside of the venturi tube 51 through a water supply pipeline 21 and is connected with a spray gun, and a water supply pump 22 is installed on the water supply pipeline 21; a pH transmitter 23 is arranged on the water tank 20, and the pH transmitter 23 detects the pH value of water in the water tank in real time so as to control the water in the water tank 20 to be alkaline; the slaked lime powder bin 30 is communicated with the inside of the venturi tube 51 through a slaked lime pipe 31.
The ash discharge port of the bag-type dust collector 60 is connected with an ash bucket 80, the ash bucket 80 is communicated with a chute 90, the chute 90 is communicated with a venturi tube 51, the ash bucket 80 is respectively connected with an ash bucket fluidization pipeline 81 and a chute fluidization pipeline 91 through the chute 90, the ash bucket fluidization pipeline 81 is connected with an ash bucket fluidization fan 82, and a first electric heater 83 is arranged on the ash bucket fluidization pipeline 81 between the ash bucket fluidization fan 82 and the ash bucket 80. The chute fluidization pipeline 91 is connected with a chute fluidization fan 92, and a second electric heater 93 is arranged on the chute fluidization pipeline 91 between the chute fluidization fan 92 and the chute 90; an exhaust port of the bag-type dust collector 60 is connected with an exhaust flue 100, and an induced draft fan 101 is installed on the exhaust flue 100 and communicated to the chimney 70.
The water supply line 21 further comprises a return line 24 connected to the water tank 20; a large head pressure is generated by the high lift water supply pump to spray the supplied water from the spray gun at the end of the water supply line into the venturi tube 51, and the surplus supplied water partially flows back from the return line 24 to the water tank 20. However, high lift water supply pumps do not have the ability to regulate flow, for example, when the water supply pump is rated for 20m flow3H, but the desulfurizing tower only needs 15m according to working conditions3The water amount is 5m more3The/h water is returned to the water tank via a return line. Therefore, the design of the return pipeline is suitable for the working condition with large water consumption.
The utility model discloses a desulfurization system is introduced with alkali lye to increase semidry desulfurization system to mix with external process water, allot into alkaline water supply, be arranged in with the SO of slaked lime powder together with the flue gas in2Carrying out reaction; by means of ash hopper and chuteThe ash hopper and the chute are heated by hot air and blown up to prevent the ash from caking and accumulating, so that the cyclic utilization rate of the ash can be improved, the desulfurization efficiency is improved, and the normal operation of the ash hopper and the chute is guaranteed. The utility model discloses a synergistic semi-dry desulfurization system can be effectively with SO in the export flue gas2The concentration is reduced to less than or equal to 35mg/Nm3The method meets the national emission standard, and the desulfurization efficiency can reach 95-98%. Compared with the existing semi-dry desulfurization system, the desulfurization effect is obviously improved, the operation is simple, and the economy is high.
Of course, as will be readily understood by those skilled in the art, when the water consumption is low, the pressure requirement on the water supply pump is not high, and the water supply pump can regulate the water amount at variable frequency, so that the water supply at the end of the water supply line is usually pressurized by compressed air, thereby causing the water supply to be sprayed from the spray gun into the interior of the venturi tube. At this time, the synergistic semi-dry desulfurization system further comprises a compressed air pipeline, and the compressed air pipeline is communicated with the tail end of the water supply pipeline.
Preferably, the pH value of the water in the water tank is controlled to be between 7.5 and 8.5 by the pH transmitter 23 in real time. The pH value of the supplied water is controlled between 7.5 and 8.5, and the supplied water can better react with SO in the flue gas2And reacting to provide desulfurization efficiency.
Preferably, an electromagnetic flow meter 13 is arranged on the alkali liquor pipeline 11, and a remote liquid level meter 14 is arranged on the alkali liquor storage tank 10. The electromagnetic flowmeter can further improve the precision of alkali liquor metering and ensure that the pH value of water in a subsequent water tank is between 7.5 and 8.5. And the remote liquid level meter detects the liquid level in the alkali liquor storage tank in real time, so that the stable operation of the system is ensured.
Preferably, the alkali liquor metering pump 12 has two pumps, one is opened and the other is prepared; the water supply pump 22 has two pumps, one for each pump. By the arrangement, when one pump fails and needs to be maintained, the standby pump can be started, so that the long-term operation of the desulfurization system is effectively ensured, and the desulfurization efficiency is ensured.
According to the utility model discloses, manual regulating valve and Y type filter are installed on the pump front line of alkali lye measuring pump 12, installation check valve and electrical control valve on the pump back pipeline, install on the alkali lye pipeline after the electrical control valve electromagnetic flowmeter 13. The water supply pump 22 is provided with a manual regulating valve and a Y-shaped filter on the front pipeline, and a check valve and an electric regulating valve on the rear pipeline.
According to the utility model discloses, water tank 20 is connected with external process water pipeline 25, alkali lye storage tank 10 is connected with external alkali lye pipeline 14. The external alkali liquor pipeline 14 is directly adopted to convey alkali liquor, so that the preparation procedures of the alkali liquor in the system are reduced, and the equipment and operation cost is reduced.
According to the utility model discloses, increase semidry desulfurization system still includes return air flue 110, return air flue 110 follows exhaust flue 100 behind draught fan 101 intercommunication to air inlet flue 40, be provided with return air flue board door 111 on the return air flue 110.
According to the utility model discloses, increase semidry desulfurization system still includes the intercommunication the buffering ash bin 120 of ash bucket 80, buffering ash bin 120 passes through storehouse pump 121 and is connected with desulfurization ash storehouse 130.
Preferably, the water supply line 21 has a plurality of branch lines, and the branch lines may be distributed along the height direction of the desulfurization tower 50, which is advantageous in improving desulfurization efficiency.
According to the utility model discloses, still including setting up on the slaked lime pipeline 31, be used for carrying the conveyor fan 32 of slaked lime powder. Preferably, there are two of the transport blowers 32, one on and one off.
Preferably, a compressed air storage tank 140 is also included. The compressed air storage tank 140 is connected to the equipment in the system that requires compressed air. For example, the compressed air storage tank 140 is connected to the blowing system of the bag-type dust collector 60 and the top of the slaked lime powder bin 30, respectively.
Preferably, the hopper fluidization conduit further has a branch conduit connected to the bottom fluidization conduit of the slaked lime powder bin 30.
In this embodiment, the slaked lime in the slaked lime powder bin 30 comes from a slaker.
The utility model discloses a when synergistic semi-dry desulfurization system carries out the desulfurization, the flue gas follows air inlet flue 40 follow venturi 51 bottom gets intoAt the bottom of the desulfurizing tower 50, alkali liquor in the alkali liquor storage tank 10 is pumped into the water tank 20 through an alkali liquor metering pump 12, and a pH transmitter 23 arranged on the water tank detects the pH value of water in the water tank in real time so as to control the water in the water tank 20 to be alkaline. The water supply pump 22 pumps the supply water into the throat of the venturi tube 51 along the water supply line 21 and discharges it through the spray gun. The hydrated lime in the hydrated lime powder bin 30 enters the Venturi tube 51 through the hydrated lime pipeline 31, and the alkaline water supply and the hydrated lime are respectively connected with SO in the flue gas2And reacting to realize the aim of desulfurization.
Preferably, the alkali liquor is a sodium hydroxide solution, and in the desulfurization reaction, the alkaline sodium hydroxide has high activity and high reaction rate. The respective reaction equations involved in the desulfurization reaction are as follows:
wherein: the formulas (1) and (2) are used for absorbing SO by the desulfurization solution in the starting stage2The reaction of (1);
formula (3) is that when the pH value is higher (higher than 9), the solution absorbs SO2The main reaction of (1);
the formula (4) is the main reaction when the pH value of the solution is lower (5-9).
Of course, the lye can also be other alkaline liquids of the prior art, such as Na2CO3。
Example 2
This example is essentially the same as example 1, except that:
the desulfurization system of this embodiment further includes cyclone 150, cyclone 150's air intake with the exhanst gas outlet of desulfurizing tower 50 links to each other, the air outlet with the air intake of sack cleaner 60 links to each other, cyclone 150's bottom ash outlet and chute 90 intercommunication.
In the arrangement, the cyclone separator 150 is arranged in front of the bag-type dust collector 60, so that reaction products, slaked lime, coal ash and other solids are separated and recycled, the recycling rate of the slaked lime is improved, and the service life of the bag-type dust collector is ensured.
Example 3 application example
A thermal power plant in Huang Ling city, Shanxi province, employs a circulating fluidized bed boiler of 3X 75t/h, and the desulfurization system of example 1 for desulfurization. The flue gas amount of a single boiler is 117520Nm3H (standard condition, wet basis), boiler outlet initial SO2The concentration is 830mg/Nm3(desulfurization in furnace is carried out), the temperature of flue gas is 141 ℃, the oxygen content is 8 percent, the humidity is 10 percent, the water consumption is 5.3t/h, the lime hydrate consumption is 0.16t/h, the alkali liquor (sodium hydroxide solution is adopted in the embodiment) consumption is 22kg/h, the pH of the water supply entering the Venturi tube is controlled to be 8, the reaction temperature in a desulfurizing tower is 85 ℃, the desulfurizing efficiency is about 96.14 percent, and the outlet SO2Concentration is less than or equal to 32mg/Nm3And the emission standard is met.
The alkali liquor consumption is changed, and the desulfurization efficiency can be adjusted to be about 95-98%. When the alkali liquor consumption is more than 26kg/h, the desulfurization efficiency can stably operate over 97 percent.
In this embodiment, the alkali lye storage tank that adopts, the material: carbon steel corrosion prevention, volume: about 10 days. Alkali liquor metering pump with flow rate of 1m3H, head 30m, power: 0.55kw, inverter motor. Electromagnetic flow meter, range: 0 to 2m3And/h, 4-20 mA loosening and remote transmission. The pipeline, the electric valve and the manual valve which are involved in the embodiment are all made of carbon steel.
Of course, at the outlet SO2The concentration is less than or equal to 35mg/Nm3Due to the initial SO at the boiler outlet2The change of concentration can change the consumption of alkali liquor properly to make the SO at the outlet2The concentration is less than or equal to 35mg/Nm3. SO in conventional semi-dry desulfurization process2In the concentration application range, the utility model discloses the desulfurization efficiency that can reach is 95 ~ 98%.
The present invention has been described in detail with reference to the specific embodiments, but the present invention is only by way of example and is not limited to the specific embodiments described above. Any equivalent modifications and substitutions to those skilled in the art are intended to be within the scope of the present invention. Accordingly, variations and modifications in equivalents may be made without departing from the spirit and scope of the invention, which is intended to be covered by the following claims.
Claims (10)
1. Synergistic semi-dry desulfurization system, its characterized in that is including alkali lye storage tank, water tank, lime hydrate powder storehouse, and consecutive air inlet flue, desulfurizing tower, sack cleaner and chimney, wherein:
the tower bottom of the desulfurizing tower is connected with a Venturi tube, the air inlet flue is communicated with the Venturi tube, the alkali liquor storage tank is connected with the water tank through an alkali liquor pipeline, and an alkali liquor metering pump is installed on the alkali liquor pipeline; the water tank is communicated to the inside of the Venturi tube through a water supply pipeline and is connected with a spray gun, and a water supply pump is arranged on the water supply pipeline; the water tank is provided with a pH transmitter, and the pH transmitter detects the pH value of water in the water tank in real time so as to control the water in the water tank to be alkaline; the slaked lime powder bin is communicated with the inside of the Venturi tube through a slaked lime pipeline;
an ash discharge port of the bag-type dust collector is connected with an ash hopper, the ash hopper is communicated with a chute, the chute is communicated with the Venturi tube, the ash hopper and the chute are respectively connected with an ash hopper fluidization pipeline and a chute fluidization pipeline, an ash hopper fluidization fan and a first electric heater are arranged on the ash hopper fluidization pipeline, and a chute fluidization fan and a second electric heater are arranged on the chute fluidization pipeline; an exhaust port of the bag-type dust collector is connected with an exhaust flue, and an induced draft fan is mounted on the exhaust flue and communicated to the chimney;
the water supply line further comprises a return line connected to the water tank; or the tail end of the water supply pipeline is communicated with a compressed air pipeline.
2. The synergistic semi-dry desulfurization system according to claim 1, wherein an electromagnetic flow meter is disposed on the lye pipeline, and a remote liquid level meter is disposed on the lye storage tank.
3. The synergistic semi-dry desulfurization system according to claim 1, wherein the lye metering pumps are provided in two sets, one set and one set; the water supply pump has two sets, one set is opened and the other set is prepared.
4. The synergistic semi-dry desulfurization system according to claim 1, wherein an external process water pipe is connected to the water tank, and an external lye pipe is connected to the lye storage tank.
5. The synergistic semi-dry desulfurization system according to claim 1, further comprising a return air flue, wherein the return air flue is communicated to the air inlet flue from an air exhaust flue behind the induced draft fan, and a return air flue plate door is arranged on the return air flue.
6. The synergistic semi-dry desulfurization system according to claim 1, further comprising a cyclone separator, wherein an air inlet of the cyclone separator is connected with the flue gas outlet of the desulfurization tower, and an air outlet of the cyclone separator is connected with the air inlet of the bag-type dust collector.
7. The synergistic semi-dry desulfurization system according to claim 1, further comprising a buffering ash bin communicated with the ash hopper, wherein the buffering ash bin is connected with the desulfurization ash bin through a bin pump.
8. The synergistic semi-dry desulfurization system according to claim 1, further comprising a conveying fan disposed on the lime hydrate pipeline for conveying lime hydrate.
9. The synergistic semi-dry desulfurization system according to claim 1, wherein the water supply line has a plurality of branch lines, the branch lines being distributed along the height direction of the desulfurization tower.
10. The synergistic semi-dry desulfurization system according to any one of claims 1 to 9, further comprising a compressed air storage tank connected to a bag-type dust remover blowing system.
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| CN201920723312.3U CN210186850U (en) | 2019-05-20 | 2019-05-20 | Synergistic semi-dry desulfurization system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113304585A (en) * | 2021-05-22 | 2021-08-27 | 北京铝能清新环境技术有限公司 | Semi-dry desulfurization system suitable for low-sulfur flue gas |
| CN115155286A (en) * | 2022-05-31 | 2022-10-11 | 江苏亿金环保科技有限公司 | Low-concentration dry-wet combined desulfurization system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113304585A (en) * | 2021-05-22 | 2021-08-27 | 北京铝能清新环境技术有限公司 | Semi-dry desulfurization system suitable for low-sulfur flue gas |
| CN115155286A (en) * | 2022-05-31 | 2022-10-11 | 江苏亿金环保科技有限公司 | Low-concentration dry-wet combined desulfurization system |
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