CN217795428U - Coke oven flue gas denitration reheating device - Google Patents
Coke oven flue gas denitration reheating device Download PDFInfo
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- CN217795428U CN217795428U CN202222129861.2U CN202222129861U CN217795428U CN 217795428 U CN217795428 U CN 217795428U CN 202222129861 U CN202222129861 U CN 202222129861U CN 217795428 U CN217795428 U CN 217795428U
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Abstract
The utility model relates to a coke oven flue gas denitration reheating device, relate to flue gas denitration's technical field, it includes heating mechanism, heating mechanism includes the heating furnace, heating furnace outside one side is provided with intermediate frequency generator, heating furnace one side is provided with the intake pipe with the interior intercommunication of heating furnace, the opposite side is provided with the outlet duct with the inside intercommunication of heating furnace, be provided with the heating pipe that all communicates with intake pipe and outlet duct in the heating furnace, heating element still includes to be the heliciform along the axis direction of heating pipe and winds the electromagnetic induction coil of establishing on the heating pipe, the electromagnetic induction coil both ends all with intermediate frequency generator electric connection, one side of intermediate frequency generator is provided with rather than electric connection's controller, the controller is used for controlling the voltage frequency that intermediate frequency generator sent and starts and close, be provided with operating panel on the controller. The application has the effect of improving the inconvenience in ignition of the traditional coke oven flue gas denitration reheating device.
Description
Technical Field
The application relates to the technical field of flue gas denitration, in particular to a coke oven flue gas denitration reheating device.
Background
Denitration refers to a process of removing nitrogen oxides from a mixture. In the traditional coking process, a large amount of nitrogen oxides are generated in the combustion process, and in order to prevent the air from being polluted by the nitrogen oxides generated after coal in a boiler is combusted, flue gas denitration becomes a problem in the whole world.
Because the temperature of the coke oven flue gas is lower than the temperature range of the denitration reaction, the flue gas needs to be reheated. The existing coke oven flue gas denitration reheating device mostly adopts a gas hot blast stove, the construction cost is high, the heating effect is poor, the heat energy utilization rate is low, the working efficiency is low, the ignition is inconvenient, the starting and stopping time is long, and the safety and the environmental protection are poor.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defect that the conventional coke oven flue gas denitration reheating device is inconvenient to ignite, the application provides the coke oven flue gas denitration reheating device.
The application provides a coke oven flue gas denitration reheating device, adopts following technical scheme:
the coke oven flue gas denitration reheating device comprises a heating mechanism, wherein the heating mechanism comprises a heating furnace, an intermediate frequency generator is arranged on one side outside the heating furnace, an air inlet pipe communicated with the inside of the heating furnace is arranged on one side of the heating furnace, an air outlet pipe communicated with the inside of the heating furnace is arranged on the other side of the heating furnace, a heating pipe communicated with the air inlet pipe and the air outlet pipe is arranged in the heating furnace, the heating assembly further comprises an electromagnetic induction coil spirally wound on the heating pipe along the axis direction of the heating pipe, the two ends of the electromagnetic induction coil are electrically connected with the intermediate frequency generator, a controller electrically connected with the intermediate frequency generator is arranged on one side of the intermediate frequency generator, the controller is used for controlling the voltage frequency sent by the intermediate frequency generator and starting and closing the controller, and an operation panel is arranged on the controller.
By adopting the technical scheme, due to the arrangement of the heating mechanism, the flue gas can be heated by the heating mechanism so as to reach the temperature range of the denitration reaction; the gas inlet pipe is arranged, so that the flue gas can enter the heating furnace from the gas inlet pipe; the gas outlet pipe is arranged, so that the flue gas can be discharged from the heating furnace through the gas outlet pipe; the heating pipe is arranged, so that the flue gas can be heated in the heating pipe; the intermediate frequency generator is arranged to send out a voltage with a certain frequency; the electromagnetic induction coil can conduct the voltage generated by the intermediate frequency generator and generate an alternating magnetic field, so that the heating pipe generates heat, and the smoke can be heated when passing through the steel pipe; the controller is arranged, and the start and the stop of the intermediate frequency generator and the generated voltage frequency can be controlled by the controller; due to the arrangement of the operation panel, a user can operate the intermediate frequency generator through the operation panel, the device is simple and convenient to operate, and the defect that the traditional coke oven flue gas denitration device is inconvenient to ignite is overcome.
Optionally, a plurality of first branch pipes are arranged between the air inlet pipe and the heating furnace, the air inlet pipe is communicated with the inside of the heating furnace through the first branch pipes, a plurality of second branch pipes are arranged between the air outlet pipe and the heating furnace, the air outlet pipe is communicated with the inside of the heating furnace through the second branch pipes, the heating pipe is provided with a plurality of heating pipes, and each of the first branch pipes and each of the second branch pipes are communicated with one of the heating pipes.
By adopting the technical scheme, the flue gas to be heated can enter the heating pipes through the first branch pipes, and can be heated in the heating pipes in the heating furnace, so that the heating efficiency is improved.
Optionally, the system further comprises a denitration mechanism for denitration of the flue gas exhausted by the heating system.
Through adopting above-mentioned technical scheme, can carry out the denitration through denitration mechanism to the flue gas after the heating.
Optionally, the denitration mechanism includes a flue gas mixer disposed on one side of the heating furnace and communicated with one end of the gas outlet pipe far away from the heating furnace.
Through adopting above-mentioned technical scheme, can carry out intensive mixing from heating furnace exhaust flue gas through the flue gas blender to the follow-up denitration to the flue gas.
Optionally, the denitration mechanism further comprises an SNCR reaction furnace communicated with one side of the flue gas mixer far away from the heating furnace.
By adopting the technical scheme, the mixed flue gas can be denitrated in the SNCR reaction furnace, the SNCR reaction furnace adopts a selective non-catalytic reduction method to denitrate the flue gas, no catalyst is needed, the problems of catalyst poisoning, failure and the like are avoided, and the denitration efficiency is improved.
Optionally, the system further comprises a power generation mechanism, wherein the power generation mechanism comprises a steam generator connected with the heating furnace and a steam turbine generator connected with the steam generator.
By adopting the technical scheme, the steam generator can generate steam by absorbing heat generated by the heating furnace; the setting of turbo generator can be through steam power generation to can utilize the waste heat production electric quantity that the heating furnace produced, supply with all the other power consumption settings, saved other power consumptions to a certain extent, produce oneself usefulness, the thermal efficiency is high.
Optionally, one side of the heating furnace is provided with a first ventilation pipe communicated with the inside of the heating furnace, the power generation mechanism further comprises a suction fan communicated with one end of the heating furnace and far away from the first ventilation pipe, and a second ventilation pipe communicated with the steam generator is arranged on the suction fan.
Through adopting above-mentioned technical scheme, can inhale the steam generator through the suction fan with the hot-air in the heating furnace in to provide heat energy for steam generator.
Optionally, the controller, the intermediate frequency generator, the suction fan, the flue gas mixer and the SNCR reaction furnace are all electrically connected to the turbine generator.
Through adopting above-mentioned technical scheme, can transmit the electric energy that turbo generator produced to controller, intermediate frequency generator, suction fan, flue gas blender and SNCR reacting furnace to these consumer homoenergetic can be followed turbo generator and obtained the electric energy.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through the arrangement of the heating pipe, the intermediate frequency generator and the controller, smoke in the heating pipe can be heated through voltage generated by the intermediate frequency generator, a user can operate the controller through the operation panel, the device does not need to ignite, is simple and convenient to operate, and overcomes the defect that the traditional coke oven is inconvenient to ignite along a pin releasing device of the coke oven;
2. the flue gas heated by the heating furnace can be heated by the arrangement of the flue gas mixer and the SNCR reaction furnace, the SNCR reaction furnace adopts a selective non-catalytic reduction method to denitrate the flue gas, and the method does not need to use a catalyst, avoids the problems of catalyst poisoning, invalidation and the like, and improves the denitration efficiency;
3. through the setting of steam generator and turbo generator, can utilize the heat electricity generation that produces in the heating furnace, the consumer in the feeding device has saved other power consumption to a certain extent, produces oneself and uses, and the thermal efficiency is high.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment of the present application;
fig. 2 is a schematic overall structure diagram of an embodiment of the present application.
Description of reference numerals: 1. a heating mechanism; 11. heating furnace; 111. a first branch pipe; 112. an air inlet pipe; 113. a second branch pipe; 114. an air outlet pipe; 12. heating a tube; 13. an intermediate frequency generator; 14. an electromagnetic induction coil; 2. a controller; 21. an operation panel; 3. a denitration mechanism; 31. a flue gas mixer; 32. an SNCR reaction furnace; 33. a first communication pipe; 34. a second communicating pipe; 4. a power generation mechanism; 41. a steam generator; 42. a steam turbine generator; 43. a first vent pipe; 44. a second vent pipe; 45. a third vent pipe; 46. a suction fan.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses a denitration reheating device for coke oven flue gas. Referring to fig. 1 and 2, a coke oven flue gas denitration reheating device comprises a heating mechanism 1, a denitration mechanism 3 and a power generation mechanism 4, wherein the heating mechanism 1 comprises a heating furnace 11 for heating flue gas and an intermediate frequency generator 13 for providing energy for the heating furnace 11, the denitration mechanism 3 comprises a flue gas mixer 31 for fully mixing the heated flue gas and an SNCR reaction furnace 32 for denitration the flue gas, and the power generation mechanism 4 comprises a steam generator 41 and a turbine generator 42.
Referring to fig. 1, the heating furnace 11 is vertically arranged, the cross section of the heating furnace 11 is rectangular, a first branch pipe 111 which is horizontal and is communicated with the inside of the heating furnace 11 is fixedly arranged at the top of one side of the heating furnace 11, the first branch pipe 111 is provided with three first branch pipes, the distance between every two adjacent first branch pipes 111 is equal, and one end, away from the heating furnace 11, of each first branch pipe 111 is provided with an air inlet pipe 112 which is communicated with one end, away from the heating furnace 11, of each first branch pipe 111.
Referring to fig. 1, a horizontal second branch pipe 113 communicated with the inside of the heating furnace 11 is fixedly arranged at the bottom of one side of the heating furnace 11, which is far away from the first branch pipe 111, three second branch pipes 113 are arranged, the distance between two adjacent second branch pipes 113 is equal, and an air outlet pipe 114 communicated with one end of each of the three second branch pipes 113, which is far away from the heating furnace 11, is arranged at one end of each of the second branch pipes 113.
Referring to fig. 1, a heating pipe 12 communicated with both the first branch pipe 111 and the second branch pipe 113 is obliquely arranged between one end of the first branch pipe 111 far away from the air inlet pipe 112 and one end of the second branch pipe 113 far away from the air outlet pipe 114 in the heating furnace 11, the heating pipe 12 is a steel pipe, a spiral electromagnetic induction coil 14 is wound around the outside of the heating pipe 12 along the axial direction thereof, and both ends of the electromagnetic induction coil 14 are connected with the intermediate frequency generator 13.
Referring to fig. 1, a side of the intermediate frequency generator 13 away from the heating furnace 11 is provided with a controller 2 for controlling the frequency of the voltage emitted from the intermediate frequency generator 13 and for starting and stopping, and a side of the controller 2 away from the intermediate frequency generator 13 is provided with an operation panel 21 for facilitating operation.
The flue gas to be denitrated enters the first branch pipe 111 through the gas inlet pipe 112, enters the heating pipe 12 through the first branch pipe 111, is heated in the heating pipe 12, and is discharged through the second branch pipe 113 and the gas outlet pipe 114; before the flue gas enters the heating pipe 12, a worker firstly starts the intermediate frequency generator 13 on the operation panel 21, so that the intermediate frequency generator 13 emits current with corresponding frequency to enter the electromagnetic induction coil 14, under the action of the electromagnetic induction coil 14 after electrification, the space where the heating pipe 12 is located generates an alternating magnetic field, the heating pipe 12 generates heat under the action of the alternating magnetic field, and when the flue gas passes through the heating pipe 12, the heat absorbed on the heating pipe 12 is heated.
Referring to fig. 1, the flue gas mixer 31 is located at one end of the outlet pipe 114 far away from the heating furnace 11 and is communicated with the outlet pipe 114, the SNCR reactor 32 is located at one side of the flue gas mixer 31 far away from the heating furnace 11, a horizontal first communicating pipe 33 is arranged between the SNCR reactor 32 and the flue gas mixer 31, one end of the first communicating pipe 33 is communicated with the flue gas mixer 31, the other end of the first communicating pipe 33 is communicated with the SNCR reactor 32, and a horizontal second communicating pipe 34 communicated with the inside of the SNCR reactor 32 is arranged at one side of the SNCR reactor 32 far away from the flue gas mixer 31.
The flue gas heated by the heating furnace 11, the temperature of which reaches the temperature range of the denitration reaction, firstly enters the flue gas mixer 31 through the gas outlet pipe 114 and is fully mixed in the flue gas mixer 31; the flue gas to be denitrated is fully mixed in the flue gas mixer 31, enters the SNCR reaction furnace 32 through the first communicating pipe 33, is subjected to denitration reaction in the SNCR reaction furnace 32, and is finally discharged from the SNCR reaction furnace 32 through the second communicating pipe 34.
Referring to fig. 1 and 2, a suction fan 46 is further disposed on one side of the heating furnace 11 close to the flue gas mixer 31, a horizontal first ventilation pipe 43 is further disposed at the bottom of a side wall of the heating furnace 11 close to the flue gas mixer 31, one end of the first ventilation pipe 43 is communicated with the inside of the heating furnace 11, the suction fan 46 at the other end is communicated, the steam generator 41 is located on one side of the suction fan 46 away from the heating furnace 11, a horizontal second ventilation pipe 44 is disposed between the steam generator 41 and the suction fan 46, one end of the second ventilation pipe 44 is communicated with the suction fan 46, and the other end is communicated with the steam generator 41; the steam turbine generator 42 is positioned on one side of the steam generator 41 far away from the suction fan 46, a horizontal third ventilation pipe 45 is arranged between the steam turbine generator 42 and the steam generator 41, one end of the third ventilation pipe 45 is communicated with the steam turbine generator 42, and the other end of the third ventilation pipe is communicated with the steam generator 41; the controller 2, the intermediate frequency generator 13, the flue gas mixer 31 and the SNCR reaction furnace 32 are all electrically connected with a turbine generator 42.
The suction fan 46 sucks high-temperature air in the heating furnace 11 from the first ventilation pipe 43, the high-temperature air is conveyed into the steam generator 41 through the second ventilation pipe 44 to provide heat for the steam generator 41, the steam generator 41 generates steam under the action of the heat, the steam enters the turbine generator 42 through the third ventilation pipe 45, the steam expands in the turbine generator 42 to do work, electric energy is generated, and the electric energy is provided for the controller 2, the intermediate frequency generator 13, the flue gas mixer 31 and the SNCR reaction furnace 32.
The coke oven flue gas denitration reheating device provided by the embodiment of the application has the implementation principle that: flue gas to be denitrated firstly enters the first branch pipe 111 through the gas inlet pipe 112, enters the heating pipe 12 through the first branch pipe 111 for heating, then enters the gas outlet pipe 114 through the second branch pipe 113, and is discharged from the gas outlet pipe 114; before the flue gas enters the heating pipe 12, a worker firstly starts the intermediate frequency generator 13 on the operation panel 21, so that the intermediate frequency generator 13 emits current with corresponding frequency to enter the electromagnetic induction coil 14, under the action of the electrified electromagnetic induction coil 14, the space where the heating pipe 12 is located generates an alternating magnetic field, the heating pipe 12 generates heat under the action of the alternating magnetic field, and when the flue gas passes through the heating pipe 12, the heat on the heating pipe 12 is absorbed and heated; the flue gas discharged from the gas outlet pipe 114 enters the flue gas mixer 31 to be mixed, the flue gas is fully mixed and then is input into the SNCR reaction furnace 32 through the first communicating pipe 33, the denitration reaction is carried out in the SNCR reaction furnace 32, and finally the flue gas is discharged from the second communicating pipe 34; the suction fan 46 sucks high-temperature air in the heating furnace 11 from the first ventilation pipe 43, the high-temperature air is conveyed into the steam generator 41 through the second ventilation pipe 44 to provide heat for the steam generator 41, the steam generator 41 generates steam under the action of the heat, the steam enters the steam turbine generator 42 through the third ventilation pipe 45, and the steam expands in the steam turbine generator 42 to do work and provide electric energy for electric equipment.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A coke oven flue gas denitration reheating device is characterized in that: including heating mechanism (1), heating mechanism (1) is including heating furnace (11), heating furnace (11) outer one side is provided with intermediate frequency generator (13), heating furnace (11) one side be provided with intake pipe (112) of intercommunication in heating furnace (11), the opposite side be provided with outlet duct (114) of heating furnace (11) inside intercommunication, be provided with in heating furnace (11) with intake pipe (112) with heating pipe (12) that outlet duct (114) all communicate, heating mechanism still includes the edge the axis direction of heating pipe (12) is the heliciform and winds and establishes electromagnetic induction coil (14) on heating pipe (12), electromagnetic induction coil (14) both ends all with intermediate frequency generator (13) electric connection, one side of intermediate frequency generator (13) is provided with rather than electric connection's controller (2), controller (2) are used for control the voltage frequency that intermediate frequency generator (13) sent and start and close, be provided with operating panel (21) on controller (2).
2. The coke oven flue gas denitration reheating device of claim 1, which is characterized in that: the utility model discloses a heating furnace, including intake pipe (112) and heating furnace (11), be provided with the first minute pipe of a plurality of (111) between intake pipe (112) and heating furnace (11), intake pipe (112) pass through first minute pipe (111) with the inside intercommunication of heating furnace (11), outlet duct (114) with be provided with a plurality of second between heating furnace (11) and divide pipe (113), outlet duct (114) pass through the second divide pipe (113) with the inside intercommunication of heating furnace (11), heating pipe (12) are equipped with a plurality of, and every first minute pipe (111) and every the second divide pipe (113) all with one of them heating pipe (12) intercommunication.
3. The coke oven flue gas denitration reheating device of claim 2, wherein: the denitration device also comprises a denitration mechanism (3) used for denitration of the flue gas exhausted by the heating furnace (11).
4. The coke oven flue gas denitration reheating device of claim 3, wherein: the denitration mechanism (3) comprises a flue gas mixer (31) which is arranged on one side of the heating furnace (11) and is communicated with one end, far away from the heating furnace (11), of the gas outlet pipe (114).
5. The coke oven flue gas denitration reheating device of claim 4, wherein: the denitration mechanism (3) further comprises an SNCR reaction furnace (32) communicated with one side, far away from the heating furnace (11), of the flue gas mixer (31).
6. The coke oven flue gas denitration reheating device of claim 5, which is characterized in that: the system is characterized by further comprising a power generation mechanism (4), wherein the power generation mechanism (4) comprises a steam generator (41) connected with the heating furnace (11) and a steam turbine generator (42) connected with the steam generator (41).
7. The coke oven flue gas denitration reheating device of claim 6, which is characterized in that: heating furnace (11) one side be provided with the first ventilation pipe of heating furnace (11) inside intercommunication, power generation mechanism (4) still include keep away from with first ventilation pipe (43) suction fan (46) of heating furnace (11) one end intercommunication, be provided with on suction fan (46) with second ventilation pipe (44) of steam generator (41) intercommunication.
8. The coke oven flue gas denitration reheating device of claim 7, which is characterized in that: the controller (2), the intermediate frequency generator (13), the suction fan (46), the flue gas mixer (31) and the SNCR reaction furnace (32) are electrically connected with the turbine generator (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222129861.2U CN217795428U (en) | 2022-08-12 | 2022-08-12 | Coke oven flue gas denitration reheating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222129861.2U CN217795428U (en) | 2022-08-12 | 2022-08-12 | Coke oven flue gas denitration reheating device |
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| Publication Number | Publication Date |
|---|---|
| CN217795428U true CN217795428U (en) | 2022-11-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222129861.2U Active CN217795428U (en) | 2022-08-12 | 2022-08-12 | Coke oven flue gas denitration reheating device |
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| CN (1) | CN217795428U (en) |
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- 2022-08-12 CN CN202222129861.2U patent/CN217795428U/en active Active
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