CN217188861U - Electric bag composite dust removal and SCR denitration device - Google Patents
Electric bag composite dust removal and SCR denitration device Download PDFInfo
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- CN217188861U CN217188861U CN202220867570.0U CN202220867570U CN217188861U CN 217188861 U CN217188861 U CN 217188861U CN 202220867570 U CN202220867570 U CN 202220867570U CN 217188861 U CN217188861 U CN 217188861U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The utility model relates to a dust removal, denitration technical field, concretely relates to electrostatic fabric filter compound dust removal and SCR denitrification facility. The SCR denitration system comprises a high-voltage electrostatic dust collector, a bag type dust collector and an SCR denitration device, wherein a standby dust collector is arranged on one side of the bag type dust collector; the flue gas outlet of the bag type dust collector is communicated with the flue gas inlet of the SCR denitration device through a heat exchanger and a pipeline heater in sequence; the hot water boiler is characterized in that a transverse partition plate is arranged in the hot water boiler, and a channel between the air inlet end and the air outlet end of the hot water boiler is divided into a direct-discharging channel and a heat exchange channel by the transverse partition plate. The high-voltage electrostatic dust collector, the bag type dust collector and the SCR denitration device are combined for dust removal and denitration, so that the dust removal efficiency is high, and the equipment runs stably; and a heat exchanger and a pipeline heater water heater are arranged, so that the heat utilization rate of the system is higher.
Description
Technical Field
The utility model relates to a dust removal, denitration technical field, concretely relates to electricity bag composite dedusting and SCR denitrification facility.
Background
The selective catalytic reduction SCR denitration technology has the remarkable advantages of high denitration efficiency, good operation stability and the like, and is widely applied to denitration of flue gas of large and medium coal-fired boilers. Because the flue gas to be treated often contains more dust and the temperature of the flue gas is higher, the conventional bag-type dust remover cannot be used for removing dust.
In the prior art, an electric dust remover and an SCR denitration reactor are combined to remove dust and denitration. However, the electric dust collector has low dust removal efficiency, and secondary dust can be generated during dust removal by vibration, so that more dust is accumulated in the SCR denitration reactor, the running resistance of equipment is increased, and the denitration performance is reduced. Secondly, the optimal reaction temperature of SCR denitration is 300-400 ℃, and the temperature in an SCR denitration reactor of the dedusting and denitration device used in the prior art is greatly influenced by the exhaust gas temperature of a boiler, the external environment temperature and the running condition of equipment, so that the denitration efficiency is also influenced when the fluctuation of the exhaust gas temperature is large. Finally, the flue gas discharged by the SCR denitration reactor contains a large amount of heat, and the prior art does not effectively utilize the heat.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides an electric-bag composite dust removal and SCR denitration device, which utilizes the combination of a high-voltage electrostatic dust collector, a bag type dust collector and an SCR denitration device to remove dust and denitration, and has high dust removal efficiency and stable equipment operation; and a heat exchanger, a pipeline heater and a water heater are arranged, so that the system heat utilization rate is higher.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an electrostatic-bag composite dust removal and SCR denitration device comprises a high-voltage electrostatic dust collector, a bag type dust collector and an SCR denitration device. A dust removal filter bag is arranged in the bag type dust collector and is a metal filter bag. The top of the bag type dust collector is provided with a gas purifying chamber, and dust-containing flue gas enters the gas purifying chamber after being subjected to dust removal treatment by the dust removal filter bag. The flue gas inlet of the high-voltage electrostatic dust collector is communicated with the flue gas main pipe, the flue gas outlet of the high-voltage electrostatic dust collector is communicated with the flue gas inlet of the bag type dust collector, and the air purifying chamber of the bag type dust collector is communicated with the flue gas inlet of the SCR denitration device. And the flue gas to be treated sequentially enters the high-voltage electrostatic dust collector, the bag type dust collector and the SCR denitration device from the flue gas main pipe. The high-voltage electrostatic dust collector can process a part of dust in the flue gas, and the rest dust is intercepted by the dust collection filter bag when passing through the bag type dust collector; the dust removal filter bag is a metal filter bag, and the metal filter bag has good high-temperature resistance; because the dust can be electrified after passing through the electric field in the high-voltage electrostatic dust collector, the electrified dust attached to the dust-removing filter bag can be mutually repelled, so that the dust on the dust-removing filter bag is loose. Therefore, dust can be easily separated from the dust removal filter bag during dust removal.
Further, the flue gas temperature in the flue gas main pipe is 200-450 ℃, and the outer side walls of the high-voltage electrostatic dust collector, the bag type dust collector and the SCR denitration device are coated with heat insulation layers. One side of the flue gas inlet of the bag type dust collector and one side of the flue gas outlet of the high-voltage electrostatic dust collector share a wall plate. The flue gas inlet of the SCR denitration device is arranged at the top, and faces one side of the flue gas outlet of the bag type dust collector. And ash hoppers are arranged below the high-voltage electrostatic dust collector and the bag type dust collector.
Furthermore, one side of the bag type dust collector is provided with a standby dust collector. And a first tee joint is arranged between the flue gas main pipe and the flue gas inlet of the high-voltage electrostatic dust collector. The first end of the first tee joint is communicated with the flue gas main pipe, the second end of the first tee joint is communicated with a flue gas inlet of the high-voltage electrostatic dust collector through a first switching valve, and the third end of the first tee joint is communicated with a flue gas inlet of the standby dust collector through a second switching valve. And a second tee joint is arranged at a flue gas outlet of the bag type dust collector, a first end of the second tee joint is communicated with the flue gas outlet of the bag type dust collector through a third switching valve, a second end of the second tee joint is communicated with a flue gas inlet of the SCR denitration device, and a third end of the second tee joint is communicated with a flue gas outlet of the standby dust collector through a fourth switching valve. When the equipment normally runs, the first switching valve and the third switching valve are opened, and the second switching valve and the fourth switching valve are closed; when the high-voltage electrostatic dust collector or the bag type dust collector breaks down, the first switching valve and the third switching valve are closed, the second switching valve and the fourth switching valve are opened, and the spare dust collector is used for treating dust in the flue gas. The stability of the flue gas treatment equipment is high, and the normal operation of front-end production equipment cannot be influenced.
Furthermore, a flue gas outlet of the bag type dust collector is communicated with a flue gas inlet of the SCR denitration device sequentially through a heat exchanger and a pipeline heater. And the cold side air inlet end of the heat exchanger is communicated with a flue gas outlet of the bag type dust collector, and the cold side air outlet end of the heat exchanger is communicated with a flue gas inlet of the SCR denitration device. And the air inlet end of the hot side of the heat exchanger is connected with a third tee joint, and the air outlet end of the hot side of the heat exchanger is connected with a fourth tee joint. And the first end of the third tee joint is communicated with the hot side air inlet end through a fifth switching valve, and the second end of the third tee joint is communicated with a flue gas outlet of the SCR denitration device. And the first end of the fourth tee joint is communicated with the air outlet end of the hot side, the second end of the fourth tee joint is communicated with the air inlet end of the water heater, and the third end of the fourth tee joint is communicated with the third end of the third tee joint through a sixth switching valve. The optimal reaction temperature of SCR denitration is 300-400 ℃, when the temperature of the flue gas discharged by the bag type dust collector is lower, the fifth switching valve is opened, the sixth switching valve is closed, the high-temperature flue gas discharged by the SCR denitration device enters the heat exchanger, the heat exchanger is utilized to preheat the flue gas discharged by the bag type dust collector, and the flue gas discharged by the hot side gas outlet end enters the hot water furnace; if the temperature of the flue gas discharged from the cold side gas outlet end is still lower, the pipeline heater is started to heat the flue gas, and the denitration efficiency is ensured. If the temperature of the flue gas discharged by the bag type dust collector meets the requirement, the fifth switching valve is closed, the sixth switching valve is opened, and the high-temperature flue gas discharged by the SCR denitration device directly enters the hot water furnace.
Furthermore, a transverse partition plate is arranged in the water heater, and the transverse partition plate divides a channel between the air inlet end and the air outlet end of the water heater into a direct-discharging channel and a heat exchange channel. The heat exchange device is characterized in that a direct-discharge switching valve plate is arranged in the direct-discharge passage, a heat exchange switching valve plate is arranged in the heat exchange passage, the direct-discharge switching valve plate and the heat exchange switching valve plate are fixedly connected to a switching valve shaft, and the direct-discharge switching valve plate and the heat exchange switching valve plate are 90-degree included angles. The switching valve shaft is driven by a switching cylinder fixed on the top surface of the water heater and rotates around a vertical axis. And a steam-water heat exchanger is arranged in the heat exchange channel, and a hot water furnace heat insulation layer is arranged on the outer side of the hot water furnace. The steam-water heat exchanger can absorb heat in the heat exchange channel to heat water so as to achieve the purpose of heat recycling. If the heat recycling is not needed, the switching valve shaft is rotated to open the direct discharging channel and close the heat exchanging channel. Through adjusting the aperture of directly discharging switching valve plate and heat transfer switching valve plate can also adjust the heat and return the quantity.
Furthermore, a temperature sensor is arranged at the air inlet end of the cold side, a temperature sensor is arranged at the air outlet end of the pipeline heater, and a temperature sensor is arranged at the air outlet end of the water heater.
Compared with the prior art, the beneficial effects of the utility model are that:
the improved dust removal and denitration device pre-removes dust through the high-voltage electrostatic dust collector, and further removes dust by using the bag type dust collector, so that the dust removal efficiency is high, the dust amount in the SCR denitration device is reduced, and the denitration efficiency is higher.
The dust removal filter bag is a metal filter bag, so that the high-temperature resistance is better; the high-voltage electrostatic dust collector at the front end enables dust on the dust-collecting filter bag to be more loose and dust to be more conveniently removed.
When the high-voltage electrostatic dust collector or the bag type dust collector breaks down, the standby dust collector can be used for removing dust, the stability of the flue gas treatment equipment is high, and the normal operation of front-end production equipment cannot be influenced.
The heat exchanger and the pipeline heater are utilized to ensure that the temperature of the flue gas entering the SCR denitrator is stabilized at 300-400 ℃, so that the denitration efficiency is improved.
The hot water boiler can recycle the heat of the flue gas discharged by the SCR denitrator; through adjusting the direct vent switches over the aperture of valve plate and heat transfer and switches over the valve plate, can also adjust the heat and return the quantity, uses more in a flexible way.
Drawings
Fig. 1 is the utility model relates to an electricity bag composite dedusting and SCR denitrification facility's elevation structure schematic diagram.
Fig. 2 is the utility model relates to a overlook schematic structure diagram of electric bag composite dust removal and SCR denitrification facility.
Fig. 3 is a schematic front view of the middle bag type dust collector of the present invention.
FIG. 4 is a schematic view of the sectional structure of the hot water boiler according to the present invention.
Fig. 5 is a schematic sectional view at a-a in fig. 4.
Fig. 6 is a left side view of the hot water boiler according to the present invention.
Fig. 7 is a schematic view of the front view of the heat exchanger of the present invention.
In the figure: 1. the high-voltage electrostatic dust collector comprises a high-voltage electrostatic dust collector, 2, a bag type dust collector, 3, a heat exchanger, 3.1, a cold side air inlet end, 3.2, a cold side air outlet end, 3.3, a hot side air outlet end, 3.4, a hot side air inlet end, 4, a pipeline heater, 5, an SCR (selective catalytic reduction) denitrator, 6, an ash bucket, 7, a hot water furnace, 7.1, a switching cylinder, 7.2, a switching valve shaft, 7.3, a direct-discharge switching valve plate, 7.4, a heat exchange switching valve plate, 7.5, a hot water furnace heat insulation layer, 7.6, a direct-discharge channel, 7.7, a heat exchange channel, 7.8, a transverse partition plate, 8, a standby dust collector, 9, a first switching valve, 10, a second switching valve, 11, a fourth switching valve, 12, a third switching valve, 13, a second tee, 14, a steam-water heat exchanger, 15, a flue gas main pipe, 16, a first tee, 17, a third tee, 18, a fourth tee, 19, a fifth switching valve, 20, a sixth switching valve, 21 and a temperature sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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 efforts belong to the protection scope of the present invention.
An electrostatic-bag composite dust removal and SCR denitration device comprises a high-voltage electrostatic dust collector 1, a bag type dust collector 2 and an SCR denitration device 5. A dust-removing filter bag 2.2 is arranged in the bag type dust collector 2, and the dust-removing filter bag 2.2 is a metal filter bag. The top of the bag type dust collector 2 is provided with an air purifying chamber 2.1, and dust-containing flue gas enters the air purifying chamber 2.1 after being subjected to dust removal treatment by the dust removing filter bag 2.2. The flue gas inlet of the high-voltage electrostatic dust collector 1 is communicated with the flue gas main pipe 15, the flue gas outlet of the high-voltage electrostatic dust collector 1 is communicated with the flue gas inlet of the bag type dust collector 2, and the air purifying chamber 2.1 of the bag type dust collector 2 is communicated with the flue gas inlet of the SCR denitration device 5. The flue gas to be treated sequentially enters the high-voltage electrostatic dust collector 1, the bag type dust collector 2 and the SCR denitration device 5 from the flue gas main pipe 15. The high-voltage electrostatic dust collector 1 can process a part of dust in the flue gas, and the rest dust is intercepted by the dust collection filter bag 2.2 when passing through the bag type dust collector 2; the dust removal filter bag 2.2 is a metal filter bag which has good high temperature resistance; because the dust can be charged after passing through the electric field in the high-voltage electrostatic dust collector 1, the charged dust attached to the dust filter bag 2.2 can be mutually repelled, so that the dust on the dust filter bag 2.2 is loose. Therefore, dust can be easily separated from the dust filter bag 2.2 during dust cleaning.
In practical application, the temperature of the flue gas in the flue gas main pipe 15 is 200-450 ℃, and the outer side walls of the high-voltage electrostatic dust collector 1, the bag type dust collector 2 and the SCR denitration device 5 are coated with heat insulation layers. One side of the flue gas inlet of the bag type dust collector 2 and one side of the flue gas outlet of the high-voltage electrostatic dust collector 1 share a wall plate. The flue gas inlet of the SCR denitration device 5 is arranged at the top, and the flue gas inlet of the SCR denitration device 5 faces one side of the flue gas outlet of the bag type dust collector 2. And ash hoppers 6 are arranged below the high-voltage electrostatic dust collector 1 and the bag type dust collector 2.
In practical application, a standby dust collector 8 is arranged on one side of the bag type dust collector 2. A first tee joint 16 is arranged between the flue gas main pipe 15 and the flue gas inlet of the high-voltage electrostatic dust collector 1. The first end of the first tee joint 16 is communicated with the flue gas main pipe 15, the second end of the first tee joint is communicated with the flue gas inlet of the high-voltage electrostatic dust collector 1 through a first switching valve 9, and the third end of the first tee joint is communicated with the flue gas inlet of the standby dust collector 8 through a second switching valve 10. A second tee joint 13 is arranged at the flue gas outlet of the bag type dust collector 2, a first end of the second tee joint 13 is communicated with the flue gas outlet of the bag type dust collector 2 through a third switching valve 12, a second end of the second tee joint is communicated with the flue gas inlet of the SCR denitration device 5, and a third end of the second tee joint is communicated with the flue gas outlet of the spare dust collector 8 through a fourth switching valve 11. When the equipment normally runs, the first switching valve 9 and the third switching valve 12 are opened, and the second switching valve 10 and the fourth switching valve 11 are closed; when the high-voltage electrostatic dust collector 1 or the bag type dust collector 2 breaks down, the first switching valve 9 and the third switching valve 12 are closed, the second switching valve 10 and the fourth switching valve 11 are opened, and the spare dust collector 8 is used for treating dust in smoke. The stability of the flue gas treatment equipment is high, and the normal operation of front-end production equipment cannot be influenced.
In practical application, the flue gas outlet of the bag type dust collector 2 is communicated with the flue gas inlet of the SCR denitration device 5 through the heat exchanger 3 and the pipeline heater 4 in sequence. And a cold side air inlet end 3.1 of the heat exchanger 3 is communicated with a flue gas outlet of the bag type dust collector 2, and a cold side air outlet end 3.2 of the heat exchanger 3 is communicated with a flue gas inlet of the SCR denitration device 5. And a third tee joint 17 is connected to a hot side air inlet end 3.4 of the heat exchanger 3, and a fourth tee joint 18 is connected to a hot side air outlet end 3.3 of the heat exchanger 3. And a first end of the third tee joint 17 is communicated with the hot-side air inlet end 3.4 through a fifth switching valve 19, and a second end of the third tee joint is communicated with a flue gas outlet of the SCR denitration device 5. A first end of the fourth tee 18 is communicated with the hot side outlet end 3.3, a second end of the fourth tee is communicated with the inlet end of the hot water furnace 7, and a third end of the fourth tee is communicated with a third end of the third tee 17 through a sixth switching valve 20. The optimal reaction temperature of the SCR denitration is 300-400 ℃, when the temperature of the flue gas discharged by the bag type dust collector 2 is lower, the fifth switching valve 19 is opened, the sixth switching valve 20 is closed, the high-temperature flue gas discharged by the SCR denitration device 5 enters the heat exchanger 3, the heat exchanger 3 is utilized to preheat the flue gas discharged by the bag type dust collector 2, and the flue gas discharged by the hot side gas outlet end 3.3 enters the hot water furnace 7; if the temperature of the flue gas discharged from the cold side gas outlet end 3.2 is still lower, the pipeline heater 4 is started to heat the flue gas, so that the denitration efficiency is ensured. If the temperature of the flue gas discharged by the bag type dust collector 2 meets the requirement, the fifth switching valve 19 is closed, the sixth switching valve 20 is opened, and the high-temperature flue gas discharged by the SCR denitration device 5 directly enters the hot water boiler 7.
In practical application, a transverse clapboard 7.8 is arranged in the hot water furnace 7, and the transverse clapboard 7.8 divides a channel between the air inlet end and the air outlet end of the hot water furnace 7 into a direct-discharging channel 7.6 and a heat exchange channel 7.7. Be equipped with in the direct vent passageway 7.6 and directly arrange switching valve plate 7.3, be equipped with in the heat transfer passageway 7.7 and change heat and switch valve plate 7.4, directly arrange switching valve plate 7.3 and the equal fixed connection of heat exchange switching valve plate 7.4 on switching valve shaft 7.2, directly arrange switching valve plate 7.3 and heat exchange switching valve plate 7.4 and be 90 contained angles. The switching valve shaft 7.2 is driven by a switching cylinder 7.1 fixed on the top surface of the water heater 7 and rotates around a vertical axis. A steam-water heat exchanger 14 is arranged in the heat exchange channel 7.7, and a hot water boiler heat-insulating layer 7.5 is arranged on the outer side of the hot water boiler 7. The steam-water heat exchanger 14 can absorb heat in the heat exchange channel 7.7 to heat water, so as to achieve the purpose of heat recycling. If the heat recycling is not needed, the switching valve shaft 7.2 is rotated to open the straight discharge passage 7.6 and close the heat exchange passage 7.7. The heat recycling amount can be adjusted by adjusting the opening degrees of the direct discharge switching valve plate 7.3 and the heat exchange switching valve plate 7.4.
In practical application, a temperature sensor 21 is arranged at the cold side air inlet end 3.1, a temperature sensor 21 is arranged at the air outlet end of the pipe heater 4, and a temperature sensor 21 is arranged at the air outlet end of the hot water furnace 7.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. The directional indicators such as front, back, left, right, end, front, etc. are only used for describing the structure, but not for limitation. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides an electricity bag composite dedusting and SCR denitrification facility which characterized in that: comprises a high-voltage electrostatic dust collector (1), a bag type dust collector (2) and an SCR denitration device (5); a dust removal filter bag (2.2) is arranged in the bag type dust collector (2), and the dust removal filter bag (2.2) is a metal filter bag; the top of the bag type dust collector (2) is provided with a gas purifying chamber (2.1), and dust-containing flue gas enters the gas purifying chamber (2.1) after being subjected to dust removal treatment by the dust removing filter bag (2.2); the flue gas inlet of the high-voltage electrostatic dust collector (1) is communicated with the flue gas main pipe (15), the flue gas outlet of the high-voltage electrostatic dust collector (1) is communicated with the flue gas inlet of the bag type dust collector (2), and the air purifying chamber (2.1) of the bag type dust collector (2) is communicated with the flue gas inlet of the SCR denitration device (5).
2. The electrostatic fabric filter and SCR denitration device of claim 1, wherein: the temperature of the flue gas in the flue gas main pipe (15) is 200-450 ℃, and the outer side walls of the high-voltage electrostatic dust collector (1), the bag type dust collector (2) and the SCR denitration device (5) are coated with heat insulation layers; one side of the flue gas inlet of the bag type dust collector (2) and one side of the flue gas outlet of the high-voltage electrostatic dust collector (1) share a wall plate; the flue gas inlet of the SCR denitrator (5) is arranged at the top, and the flue gas inlet of the SCR denitrator (5) faces one side of the flue gas outlet of the bag type dust collector (2); and ash buckets (6) are arranged below the high-voltage electrostatic dust collector (1) and the bag type dust collector (2).
3. The electrostatic fabric filter and SCR denitration device of claim 1, wherein: one side of the bag type dust collector (2) is provided with a standby dust collector (8); a first tee joint (16) is arranged between the main flue gas pipe (15) and the flue gas inlet of the high-voltage electrostatic dust collector (1); the first end of the first tee joint (16) is communicated with the flue gas main pipe (15), the second end of the first tee joint is communicated with a flue gas inlet of the high-voltage electrostatic dust collector (1) through a first switching valve (9), and the third end of the first tee joint is communicated with a flue gas inlet of the standby dust collector (8) through a second switching valve (10); and a second tee joint (13) is arranged at a flue gas outlet of the bag type dust collector (2), a first end of the second tee joint (13) is communicated with the flue gas outlet of the bag type dust collector (2) through a third switching valve (12), a second end of the second tee joint is communicated with a flue gas inlet of the SCR denitration device (5), and a third end of the second tee joint is communicated with a flue gas outlet of the spare dust collector (8) through a fourth switching valve (11).
4. The electrostatic fabric filter and SCR denitration device of claim 1, wherein: a flue gas outlet of the bag type dust collector (2) is communicated with a flue gas inlet of the SCR denitration device (5) through a heat exchanger (3) and a pipeline heater (4) in sequence; a cold side gas inlet end (3.1) of the heat exchanger (3) is communicated with a flue gas outlet of the bag type dust collector (2), and a cold side gas outlet end (3.2) of the heat exchanger (3) is communicated with a flue gas inlet of the SCR denitration device (5); a third tee joint (17) is connected to a hot side air inlet end (3.4) of the heat exchanger (3), and a fourth tee joint (18) is connected to a hot side air outlet end (3.3) of the heat exchanger (3); a first end of the third tee joint (17) is communicated with the hot side gas inlet end (3.4) through a fifth switching valve (19), and a second end of the third tee joint is communicated with a flue gas outlet of the SCR denitration device (5); and a first end of the fourth tee joint (18) is communicated with the hot side air outlet end (3.3), a second end of the fourth tee joint is communicated with the air inlet end of the hot water furnace (7), and a third end of the fourth tee joint is communicated with a third end of the third tee joint (17) through a sixth switching valve (20).
5. The electrostatic fabric filter and SCR denitration device of claim 4, wherein: a transverse clapboard (7.8) is arranged in the hot water furnace (7), and the transverse clapboard (7.8) divides a channel between the air inlet end and the air outlet end of the hot water furnace (7) into a direct-discharging channel (7.6) and a heat exchange channel (7.7); a direct discharge switching valve plate (7.3) is arranged in the direct discharge channel (7.6), a heat exchange switching valve plate (7.4) is arranged in the heat exchange channel (7.7), the direct discharge switching valve plate (7.3) and the heat exchange switching valve plate (7.4) are both fixedly connected to a switching valve shaft (7.2), and the direct discharge switching valve plate (7.3) and the heat exchange switching valve plate (7.4) form an included angle of 90 degrees; the switching valve shaft (7.2) is driven by a switching cylinder (7.1) fixed on the top surface of the hot water furnace (7) and rotates around a vertical axis; a steam-water heat exchanger (14) is arranged in the heat exchange channel (7.7), and a water heater heat-insulating layer (7.5) is arranged on the outer side of the water heater (7).
6. The electrostatic fabric filter and SCR denitration device of claim 4, wherein: and a temperature sensor (21) is arranged at the cold side air inlet end (3.1), a temperature sensor (21) is arranged at the air outlet end of the pipeline heater (4), and a temperature sensor (21) is arranged at the air outlet end of the hot water furnace (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220867570.0U CN217188861U (en) | 2022-04-14 | 2022-04-14 | Electric bag composite dust removal and SCR denitration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220867570.0U CN217188861U (en) | 2022-04-14 | 2022-04-14 | Electric bag composite dust removal and SCR denitration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217188861U true CN217188861U (en) | 2022-08-16 |
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ID=82774203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220867570.0U Active CN217188861U (en) | 2022-04-14 | 2022-04-14 | Electric bag composite dust removal and SCR denitration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217188861U (en) |
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2022
- 2022-04-14 CN CN202220867570.0U patent/CN217188861U/en active Active
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