CN114904394A - Flue gas nitrogen oxide denitration treatment device - Google Patents
Flue gas nitrogen oxide denitration treatment device Download PDFInfo
- Publication number
- CN114904394A CN114904394A CN202210817575.7A CN202210817575A CN114904394A CN 114904394 A CN114904394 A CN 114904394A CN 202210817575 A CN202210817575 A CN 202210817575A CN 114904394 A CN114904394 A CN 114904394A
- Authority
- CN
- China
- Prior art keywords
- pipeline
- flue gas
- fan
- communicated
- reactor
- 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.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8631—Processes characterised by a specific device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/90—Injecting reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The application provides a flue gas nitrogen oxide denitration treatment device, which comprises a reactor, a first gas circuit unit and a second gas circuit unit; a catalyst module and an injection device for injecting a reducing agent are arranged in the reactor; the reactor is provided with a reaction input port and a reaction output port which are communicated with the interior of the reactor; the reactor is communicated with a discharge pipeline, and a fourth switch valve is arranged in the discharge pipeline; the first air circuit unit comprises a first fan; the input end of the first fan is used for being communicated with a flue gas output port of the hearth, and the output end of the first fan is communicated with the reaction input port through a first pipeline; a first switch valve is arranged in the first pipeline; the second air path unit comprises a second fan; the input end of the second fan is communicated with the reaction output port, and the output end of the second fan is communicated with the reaction input port through a second pipeline; a second switch valve is arranged in the second pipeline. Through the structure, the emission of residual nitrogen oxides caused by insufficient reaction can be avoided, and the emission of the nitrogen oxides is favorably reduced.
Description
Technical Field
The present disclosure generally relates to the technical field of flue gas treatment, and particularly relates to a flue gas nitrogen oxide denitration treatment device.
Background
Nitrogen oxides NO x It refers to a compound composed of nitrogen and oxygen, mainly Nitric Oxide (NO) and nitrogen dioxide (NO) 2 ) Two kinds. Nitrogen Oxide (NO) discharged by fastener mesh-belt type quenching furnace x ) From the fuel combustion process, the main types include: the nitrogen in the air is oxidized at high temperature to generate thermal NO x And nitrogen in the air reacts with hydrocarbon radicals in the fuel to produce rapid NO x 。
At present, how to optimize a denitration treatment mode of the nitrogen oxide in the flue gas of the quenching furnace becomes a technical problem to be solved urgently.
Disclosure of Invention
In view of the above-mentioned defects or shortcomings in the prior art, it is desirable to provide a flue gas nitrogen oxide denitration treatment device which can solve the above-mentioned technical problems.
The application provides a flue gas nitrogen oxide denitration treatment device, includes:
the device comprises a reactor, a catalyst module and an injection device for injecting a reducing agent, wherein the reactor is internally provided with the catalyst module; the reactor is provided with a reaction input port and a reaction output port which are communicated with the interior of the reactor; the reactor is communicated with a discharge pipeline, and a fourth switch valve is arranged in the discharge pipeline;
a first air path unit including a first fan; the input end of the first fan is used for being communicated with a flue gas output port of the hearth, and the output end of the first fan is communicated with the reaction input port through a first pipeline; a first switch valve is arranged in the first pipeline;
the second air path unit comprises a second fan; the input end of the second fan is communicated with the reaction output port, and the output end of the second fan is communicated with the reaction input port through a second pipeline; and a second switch valve is arranged in the second pipeline.
According to the technical scheme that this application embodiment provided, injection apparatus includes the atomizer, the atomizer input is connected with and is located the outside stock solution device of reactor.
According to the technical scheme provided by the embodiment of the application, the liquid storage device comprises a control unit and a plurality of liquid storage units;
the liquid storage unit comprises a liquid storage tank for storing a reducing agent, a pump body and a weighing device; the input end of the pump body is communicated with the liquid storage tank, and the output end of the pump body is communicated with the input end of the atomizer; the weighing device is arranged at the bottom of the liquid storage tank;
the input end of the control unit is connected with the weighing device, and the output end of the control unit is connected with the pump body.
According to the technical scheme provided by the embodiment of the application, a circulating input port and a circulating output port are arranged on the hearth; a third fan is arranged outside the hearth; the circulation input port and the circulation output port are communicated with the third fan through a third pipeline; and a third switch valve is arranged in the third pipeline.
According to the technical scheme provided by the embodiment of the application, the catalyst modules are arranged in a plurality of rows; and two adjacent catalyst modules are detachably and fixedly connected.
According to the technical scheme provided by the embodiment of the application, the discharge pipeline is arranged at the top of the reactor along the vertical direction, and a steering device is arranged on the discharge pipeline; the steering device includes:
a fourth pipeline, one end of the fourth pipeline is coaxially and rotatably arranged at one end of the discharge pipeline, which is far away from the reactor;
one end of the fifth pipeline is connected with one end, far away from the reactor, of the fourth pipeline through a joint hose, and the other end of the fifth pipeline is used for exhausting;
the first driving unit is used for driving the fourth pipeline to rotate along the axis of the fourth pipeline;
the second driving unit is used for driving the fifth pipeline to rotate in a vertical plane where the fourth pipeline and the fifth pipeline are located;
the first sensing unit comprises a first wind direction sensor and a second wind direction sensor, and the rotation axis of the first wind direction sensor is arranged along the vertical direction and used for measuring first wind direction information; the rotation axis of the second wind direction sensor is arranged along the horizontal direction and is used for measuring second wind direction information;
the input end of the control unit is connected with the first wind direction sensor and the second wind direction sensor, and the output end of the control unit is connected with the first driving unit and the second driving unit; the control unit is configured to: and receiving the first wind direction information and the second wind direction information, and controlling the first driving unit and the second driving unit to act so that the exhaust direction of the fifth pipeline is the same as the wind direction.
According to the technical scheme provided by the embodiment of the application, the first driving unit comprises a driving motor; a driving gear is installed on a rotating shaft of the driving motor, a driven gear is fixedly installed on the fourth pipeline, and the driving gear is meshed with the driven gear;
the second drive unit comprises a multi-stroke cylinder; one end of the multi-stroke cylinder is hinged to the side wall of the fourth pipeline, and the other end of the multi-stroke cylinder is hinged to the side wall of the fifth pipeline.
According to the technical scheme provided by the embodiment of the application, a plurality of hearths are arranged, and a gas path adjusting device is arranged between each hearth and the corresponding first fan;
the gas circuit adjusting device comprises:
the air distribution body is internally provided with an air distribution cavity, and the air distribution body is provided with an air distribution outlet and a plurality of air distribution inlets which are communicated with the air distribution cavity; the air distribution outlet is communicated with the input end of the first fan;
the gas path assembly is provided with a plurality of third gas path units, and each third gas path unit is communicated with one air distribution inlet and one smoke gas output port; the third gas circuit unit comprises an installation pipeline, and a control valve and a flowmeter are arranged in the installation pipeline; the flowmeter is used for measuring a smoke flow value;
the second control unit is connected with the flow meter of each third air path unit, and the output end of the second control unit is connected with the first fan and the control valve of each third air path unit; the second control unit is configured to:
receiving all the flue gas flow values, and calculating the flue gas flow velocity value of each third gas path unit;
acquiring the minimum value in the flue gas flow velocity values;
adjusting the rotating speed of the first fan to enable the minimum value to be within a set range;
and adjusting the opening degree of the control valve in each third gas path unit so as to enable the flue gas flow rate value of all the third gas path units to be within the set range.
According to the technical scheme provided by the embodiment of the application, a flow guide device is arranged in the discharge pipeline; the flow guide device comprises:
a drive rod coaxially rotatably mounted within the discharge conduit; one end of the transmission rod is provided with a fan blade; the side wall of the transmission rod is provided with a helical blade along the axial direction;
and the driving mechanism is arranged on the discharge pipeline and is used for driving the transmission rod to rotate along the axis of the transmission rod.
According to the technical scheme that this application embodiment provided, flue gas nitrogen oxide denitration processing apparatus still includes:
the second sensing unit comprises a first temperature sensor and a first air pressure sensor which are arranged in the reaction input port, a second temperature sensor and a second air pressure sensor which are arranged in the reaction output port, and a third air pressure sensor which is used for detecting the injection pressure of the injection device;
a server configured to:
receiving real-time sensing information of the second sensing unit;
and sending the sensing information to an operation and maintenance terminal and/or a supervision terminal.
The beneficial effect of this application lies in: in the flue gas treatment process, the first switch valve is firstly opened, so that the flue gas in the hearth enters the reactor through the flue gas output port and the reaction input port, and nitrogen oxides in the flue gas are denitrified to generate N under the catalytic action of the catalyst and the reduction action of the reducing agent in the environment of 290-400 DEG C 2 And H 2 O; opening the second switch valve to enable the gas output by the reactor to enter the reactor again for cyclic reaction so as to avoid the emission of residual nitrogen oxides caused by insufficient reaction; and finally, opening the fourth switch valve, and discharging the denitrated gas through the discharge pipeline.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic structural view of a flue gas nitrogen oxide denitration treatment device provided by the present application;
FIG. 2 is a schematic view of the discharge duct 3 of FIG. 1 with a steering device mounted thereon;
fig. 3 is a schematic structural view of the first fan 4 shown in fig. 1 connected to the furnace 11;
fig. 4 is a schematic structural diagram of an air path adjusting device installed at an input port of the first fan 4 shown in fig. 1;
fig. 5 is a schematic structural view of the discharge duct 3 shown in fig. 1 in which a deflector is installed.
Reference numbers in the figures:
1. a reactor; 1-1, a reaction input port; 1-2, a reaction output port; 2. a catalyst module; 3. a discharge conduit; 3-1, a fourth switch valve; 4. a first fan; 5. a first conduit; 5-1, a first switch valve; 6. a second fan; 7. a second pipe; 7-1, a second switch valve; 8. a liquid storage tank; 9. a pump body; 10. a weighing device; 11. a hearth; 11-1, a flue gas outlet; 11-2, a circulation input port; 11-3, circulating an output port; 12. a third fan; 13. a third pipeline; 13-1, a third on-off valve; 14. a fourth conduit; 15. a fifth pipeline; 16. a joint hose; 17. a drive gear; 18. a driven gear; 19. a multi-stroke cylinder; 20. a wind distribution body; 20-1, air distribution inlet; 20-2, an air distribution outlet; 21. installing a pipeline; 22. connecting a pipeline; 23. a fixed seat; 24. A proximity switch. 25. A spray head, 26 and an air pump; 27. a transmission rod; 28. a helical blade; 29. A fan blade; 30. a drive mechanism; 31. a limiting plate; 32. a filter; 33. the motor is driven.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Please refer to fig. 1, which is a device for denitration treatment of flue gas nitrogen oxides provided by the present application, and the device includes:
the device comprises a reactor 1, wherein a catalyst module 2 and an injection device for injecting a reducing agent are arranged in the reactor 1; the reactor 1 is provided with a reaction input port 1-1 and a reaction output port 1-2 which are communicated with the interior of the reactor; the reactor 1 is communicated with a discharge pipeline 3, and a fourth switch valve 3-1 is arranged in the discharge pipeline 3;
a first air path unit including a first fan 4; the input end of the first fan 4 is used for being communicated with a flue gas output port 11-1 of the hearth 11, and the output end of the first fan 4 is communicated with the reaction input port 1-1 through a first pipeline 5; a first switch valve 5-1 is arranged in the first pipeline 5;
the second air path unit comprises a second fan 6; the input end of the second fan 6 is communicated with the reaction output port 1-2, and the output end of the second fan 6 is communicated with the reaction input port 1-1 through a second pipeline 7; a second switch valve 7-1 is arranged in the second pipeline 7.
Specifically, the first fan 4 and the second fan 6 are variable frequency fans;
specifically, the reducing agent is ammonia water or urea;
specifically, the hearth 11 is a fastener mesh-belt quenching furnace; each quenching furnace is provided with a plurality of flue gas output ports for outputting flue gas, and the amount of the flue gas output by each flue gas output port is certain, so that the amount of the reducing agent can be determined according to the number of the quenching furnaces and the number of the flue gas output ports in actual use.
In some embodiments, a nitrogen oxide detector is installed in the exhaust pipe 3 between the fourth switching valve 3-1 and the reaction input port 1-1; the flue gas nitrogen oxide denitration treatment device further comprises a control module, wherein the input end of the control module is connected with the nitrogen oxide detector, and the output end of the control module is connected with the first switch valve 5-1; the control module is used for detecting the concentration of the nitric oxide and controlling the fourth switch valve 3-1 to be opened when judging that the concentration is lower than a set value.
The working principle is as follows: in the process of flue gas treatment, firstly, the first switch valve 5-1 is opened, so that flue gas in the hearth 11 enters the reactor 1 through the flue gas output port 11-1 and the reaction input port 1-1, and nitrogen oxides in the flue gas are denitrified to generate N under the catalytic action of the catalyst and the reducing action of the reducing agent under the environment of 290-400 ℃ to generate N 2 And H 2 O; the second switch valve 7-1 is opened, so that the reactor is enabled to be in a reaction stateThe gas output by the reactor 1 enters the reactor 1 again for circular reaction so as to avoid the discharge of residual nitrogen oxides caused by insufficient reaction; and finally, opening the fourth switch valve 3-1, and discharging the denitrated gas through the discharge pipeline 3.
In some embodiments, the injection device comprises an atomizer, and the input end of the atomizer is connected with a liquid storage device positioned outside the reactor 1.
Specifically, the atomizer is used for spraying the reducing agent in the liquid storage device in an atomized form. The atomizer is arranged in the reactor and is close to the reaction output port 1-2.
Further, the atomizer include with the shower nozzle 25 of stock solution device intercommunication, and with the air pump 26 of shower nozzle 25 intercommunication, the air pump 26 is through compressed air's mode with the reductant by the atomizing blowout of shower nozzle 25, has improved the area of contact of flue gas with the reductant, and the reaction is abundant, balanced, is favorable to improving denitration treatment's effect, reduces nitrogen oxide's emission.
Further, the atomizer can be provided in plurality to improve the reaction efficiency.
In some embodiments, the reservoir device comprises a control unit and a plurality of reservoir units;
the liquid storage unit comprises a liquid storage tank 8 for storing a reducing agent, a pump body 9 and a weighing device 10; the input end of the pump body 9 is communicated with the liquid storage tank 8, and the output end of the pump body 9 is communicated with the input end of the atomizer; the weighing device 10 is arranged at the bottom of the liquid storage tank 8;
the input end of the control unit is connected with the weighing device 40, and the output end of the control unit is connected with the pump body 9.
Specifically, the control unit is specifically configured to:
receiving the weighing values of all the weighing devices 10;
and controlling the pump body 9 of at least one liquid storage unit corresponding to the weighing value larger than the set value to be opened.
The working principle is as follows: through setting up the control unit for can be according to the sensing data automatic control of weighing device 10 corresponding pump body 9 and open, played along with the consumption of the reductant in the liquid storage pot 8, the control unit can automatic switch over into the stock solution unit that satisfies the settlement condition (the value of weighing is greater than the setting value), and then improved work efficiency, avoid interrupting the reaction process. Meanwhile, the amount of the reducing agent required by the unit volume of the flue gas is small, the amount of the reducing agent in the liquid storage tank 8 can be accurately read by arranging the weighing device 10, and the control process is more accurate.
In some embodiments, the pump body 9 is a variable frequency pump or a diaphragm pump to meet the requirements of different output quantities.
In some embodiments, as shown in fig. 2, the furnace 11 is provided with a circulation input port 11-2 and a circulation output port 11-3; a third fan 12 is arranged outside the hearth 11; the circulation input port 11-2 and the circulation output port 11-3 are communicated with the third fan 12 through a third pipeline 13; a third on-off valve 13-1 is arranged in the third pipeline 13.
Specifically, the third fan 12 is a variable frequency fan, an input end of the third fan 12 is communicated with a circulation input port 11-2 of the furnace 11 through a third pipeline 13, and an output end of the third fan is communicated with a circulation output port 11-3 of the furnace 11.
In the working process, part of the flue gas output by the hearth 11 can enter the hearth 11 through the third pipeline 13 again by opening the third switch valve 13-1, so that the flue gas is in the hearth 11, the generation of nitrogen oxides is further inhibited, the total emission amount of the flue gas is reduced, meanwhile, the waste heat is recycled, and the effects of energy conservation and emission reduction are achieved.
In some embodiments, the catalyst modules 2 are provided in several numbers and arranged in an array; two adjacent catalyst modules 2 can be detachably and fixedly connected.
Specifically, the number of the catalyst modules 2 is one, two or more; the two adjacent catalyst modules 2 can be detachably and fixedly connected, so that the installation and the replacement can be conveniently carried out, and the improvement of the working efficiency is facilitated.
Example 2
On the basis of example 1, in some embodiments, as shown in fig. 3, the discharge pipe 3 is installed on the top of the reactor 1 in a vertical direction, and a steering device is installed on the discharge pipe 3; the steering device includes:
a fourth pipe 14, one end of the fourth pipe 14 is coaxially and rotatably arranged at one end of the discharge pipe, which is far away from the reactor 1;
a fifth pipeline 15, one end of the fifth pipeline 15 is connected with one end of the fourth pipeline 14 far away from the reactor 1 through a joint hose 16, and the other end of the fifth pipeline 15 is used for exhausting;
a first driving unit for driving the fourth pipe 14 to rotate along the axis thereof;
a second driving unit, configured to drive the fifth pipeline 15 to rotate in a vertical plane in which the fourth pipeline 14 and the fifth pipeline 15 are located;
the first sensing unit comprises a first wind direction sensor and a second wind direction sensor, and the rotation axis of the first wind direction sensor is arranged along the vertical direction and used for measuring first wind direction information; the rotation axis of the second wind direction sensor is arranged along the horizontal direction and used for measuring second wind direction information;
the input end of the control unit is connected with the first wind direction sensor and the second wind direction sensor, and the output end of the control unit is connected with the first driving unit and the second driving unit; the control unit is configured to: and receiving the first wind direction information and the second wind direction information, and controlling the first driving unit and the second driving unit to operate so that the exhaust direction of the fifth duct 15 is the same as the wind direction.
Specifically, an installation frame is arranged on the side wall of the discharge pipeline 3, and the installation frame is provided with a first installation platform arranged along the horizontal direction and a second installation platform arranged along the vertical direction; the first wind direction sensor is installed on the first installation platform, and the second wind direction sensor is installed on the second installation platform.
Specifically, the first wind direction sensor is provided with a first wind vane, and the rotation axis of the first wind vane is arranged along the vertical direction; the second wind direction sensor is provided with a second wind vane, and the rotation axis of the second wind vane is arranged along the horizontal direction;
specifically, the first wind direction sensor outputs the first wind direction information by detecting rotation of a first wind vane, and the first wind direction information is used for representing a wind direction in a horizontal plane; and the second wind direction sensor outputs second wind direction information by detecting the rotation of a second wind vane, and the second wind direction information is used for representing the wind direction in the vertical plane.
In some embodiments, the first drive unit comprises a drive motor 33; a driving gear 17 is mounted on a rotating shaft of the driving motor 33, a driven gear 18 is fixedly mounted on the fourth pipeline 14, and the driving gear 17 is meshed with the driven gear 18;
the second drive unit comprises a multi-stroke cylinder 19; one end of the multi-stroke cylinder 19 is hinged to the side wall of the fourth pipeline 14, and the other end of the multi-stroke cylinder 19 is hinged to the side wall of the fifth pipeline 15.
The rotation of the driving motor 33 is controlled to drive the fourth pipeline 14 and the fifth pipeline 15 to rotate, so that the output end of the fifth pipeline 15 is back to the incoming wind direction of the horizontal plane; by controlling the extension of the multi-stroke cylinder, the included angle between the fifth pipeline 15 and the fourth pipeline 14 can be adjusted, and the output end of the fifth pipeline 15 faces back to the incoming wind direction of the vertical plane.
Example 3
On the basis of embodiment 1, in some embodiments, as shown in fig. 4, a plurality of furnace chambers 11 are provided, and a gas path adjusting device is installed between the furnace chambers 11 and the first fan 4;
the gas circuit adjusting device comprises:
the air distribution body 20 is internally provided with an air distribution cavity, and the air distribution body 20 is provided with an air distribution outlet 20-2 and a plurality of air distribution inlets 20-1 which are communicated with the air distribution cavity; the air distribution outlet 20-2 is communicated with the input end of the first fan 4;
the gas path assembly is provided with a plurality of third gas path units, and each third gas path unit is communicated with one air distribution inlet 20-1 and one smoke gas output port 11-1; the third gas circuit unit comprises an installation pipeline 21, and a control valve and a flowmeter are arranged in the installation pipeline 21; the flowmeter is used for measuring a flue gas flow value;
the second control unit is connected with the flow meter of each third air path unit, and the output end of the second control unit is connected with the first fan 4 and the control valve of each third air path unit; the second control unit is configured to:
receiving all the flue gas flow values, and calculating the flue gas flow velocity value of each third gas path unit;
acquiring the minimum value in the flue gas flow velocity values;
adjusting the rotating speed of the first fan 4 to enable the minimum value to be within a set range;
and adjusting the opening degree of the control valve in each third gas path unit so as to enable the flue gas flow rate value of all the third gas path units to be within the set range.
Through the structure, the flow velocity of the flue gas in each third unit is within a set range, and the difference of the flue gas discharging speed of each hearth 11 caused by the difference of the distance and the pipe diameter is avoided. Therefore, the low working efficiency caused by the low smoke exhaust speed is avoided, and the discharge of partial unburnt natural gas caused by the high smoke exhaust speed is also avoided.
In some embodiments, a connecting pipe 22 is detachably installed between the installation pipe 21 and the flue gas output port 11-1, a first fixed seat 23 is installed on a side wall of the connecting pipe 22, a proximity switch 24 is arranged on one side of the first fixed seat 23, which is close to the furnace 11, and the proximity switch 24 is connected with an input end of the second control unit;
the second control unit is further configured to: and receiving a proximity signal of the proximity switch, and controlling the corresponding flowmeter to be started.
According to the working principle, when the device is used, the connecting pipeline is connected to the smoke output port 11-1, the proximity switch 24 sends a sensing signal to the second control unit, and the second control unit can control the flowmeter to be started. Through the structure, the mounting and dismounting can be conveniently carried out, and the influence on the normal control and regulation process caused by the mistaken opening of the flowmeter in the unused third air circuit unit is avoided.
Example 4
On the basis of the embodiment 1, in the embodiment, a flow guide device is installed in the discharge pipeline 3; the flow guide device comprises:
a drive rod 27, said drive rod 27 being coaxially rotatably mounted within said discharge duct 3; one end of the transmission rod 27 is provided with a fan blade 29; the side wall of the transmission rod 27 is provided with a helical blade 28 along the axial direction;
a drive mechanism 30, said drive mechanism 30 being mounted on said discharge duct 3 for driving said transmission rod 27 in rotation along its axis.
Further, the driving mechanism 30 includes a gear set mounted at an end of the transmission rod 27 away from the fan blades 29, and a driving motor mounted on the discharge duct 3; the output end of the driving motor is in transmission connection with the gear set and is used for driving the gear set to rotate so as to drive the transmission rod 27 to rotate around the axis of the transmission rod;
further, a limiting plate 31 is installed in the discharge pipeline 3, and the transmission rod 27 is rotatably installed on the limiting plate 31 along the axis thereof;
further, a filter 32 is installed in the exhaust duct 3 to filter the large particulate smoke and dust from being discharged to the external environment.
In the structure, the fan blades 29 and the spiral blades 28 are arranged spirally, so that the flue gas can be effectively guided, and the working efficiency is improved.
In some embodiments, the flue gas nitrogen oxide denitration treatment device further comprises:
the second sensing unit comprises a first temperature sensor and a first air pressure sensor which are arranged in the reaction input port 1-1, a second temperature sensor and a second air pressure sensor which are arranged in the reaction output port 1-2, and a third air pressure sensor which is used for detecting the injection pressure of the injection device;
a server configured to:
receiving real-time sensing information of the second sensing unit;
and sending the sensing information to an operation and maintenance terminal and/or a supervision terminal.
Furthermore, the output end of the second sensing unit is connected with a control module, and the control module is wirelessly connected with the server;
further, the sensing information specifically includes: a first temperature value of the reaction input port 1-1 measured by a first temperature sensor, a first air pressure value of the reaction input port 1-1 measured by a first air pressure sensor, a second temperature value of the reaction output port 1-2 measured by a second temperature sensor, a second air pressure value of the reaction output port 1-2 measured by a second air pressure sensor, and a third air pressure value inside the injection device measured by a third air pressure sensor;
by the structure, the operation and maintenance terminal or the supervision terminal can monitor the basic information of the device in real time, and meanwhile, technical personnel can obtain abnormal information at the first time conveniently;
further, the server is specifically configured to:
receiving login information, wherein the verification information comprises account information and password information;
verifying the login information;
receiving real-time sensing information of the second sensing unit;
receiving a first instruction and outputting user information; the user information comprises account information, balance information and address information;
and receiving a second instruction, and sending the sensing information to an operation and maintenance terminal and/or a supervision terminal.
And receiving a downloading instruction, and downloading the sensing information to a local storage space.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (10)
1. The utility model provides a flue gas nitrogen oxide denitration treatment device which characterized in that includes:
the device comprises a reactor (1), wherein a catalyst module (2) and an injection device for injecting a reducing agent are arranged in the reactor (1); the reactor (1) is provided with a reaction input port (1-1) and a reaction output port (1-2) which are communicated with the interior of the reactor; the reactor (1) is communicated with a discharge pipeline (3), and a fourth switch valve (3-1) is arranged in the discharge pipeline (3);
a first gas path unit including a first fan (4); the input end of the first fan (4) is used for being communicated with a flue gas output port (11-1) of the hearth (11), and the output end of the first fan (4) is communicated with the reaction input port (1-1) through a first pipeline (5); a first switch valve (5-1) is arranged in the first pipeline (5);
the second air path unit comprises a second fan (6); the input end of the second fan (6) is communicated with the reaction output port (1-2), and the output end of the second fan (6) is communicated with the reaction input port (1-1) through a second pipeline (7); a second switch valve (7-1) is arranged in the second pipeline (7).
2. The flue gas nitrogen oxide denitration treatment device of claim 1, wherein the injection device comprises an atomizer, and the input end of the atomizer is connected with a liquid storage device positioned outside the reactor (1).
3. The flue gas nitrogen oxide denitration treatment device of claim 2, wherein the liquid storage device comprises a control unit and a plurality of liquid storage units;
the liquid storage unit comprises a liquid storage tank (8) for storing a reducing agent, a pump body (9) and a weighing device (10); the input end of the pump body (9) is communicated with the liquid storage tank (8), and the output end of the pump body (9) is communicated with the input end of the atomizer; the weighing device (10) is arranged at the bottom of the liquid storage tank (8);
the input end of the control unit is connected with the weighing device (10), and the output end of the control unit is connected with the pump body (9).
4. The flue gas nitrogen oxide denitration treatment device according to claim 1, wherein a circulation input port (11-2) and a circulation output port (11-3) are arranged on the hearth (11); a third fan (12) is arranged outside the hearth (11); the circulating input port (11-2) and the circulating output port (11-3) are communicated with the third fan (12) through a third pipeline (13); a third on-off valve (13-1) is arranged in the third pipeline (13).
5. The flue gas nitrogen oxide denitration treatment device according to claim 1, wherein the catalyst modules (2) are provided in number and arranged in an array; two adjacent catalyst modules (2) are detachably and fixedly connected.
6. The flue gas nitrogen oxide denitration treatment device according to claim 1, wherein the discharge pipeline (3) is installed on the top of the reactor (1) along a vertical direction, and a steering device is installed on the discharge pipeline (3); the steering device includes:
a fourth pipeline (14), wherein one end of the fourth pipeline (14) is coaxially and rotatably arranged at the end of the discharge pipeline far away from the reactor (1);
one end of the fifth pipeline (15) is connected with one end, far away from the reactor (1), of the fourth pipeline (14) through a joint hose (16), and the other end of the fifth pipeline (15) is used for exhausting;
a first drive unit for driving the fourth conduit (14) in rotation along its axis;
the second driving unit is used for driving the fifth pipeline (15) to rotate in a vertical plane where the fourth pipeline (14) and the fifth pipeline (15) are located;
the first sensing unit comprises a first wind direction sensor and a second wind direction sensor, and the rotation axis of the first wind direction sensor is arranged along the vertical direction and used for measuring first wind direction information; the rotation axis of the second wind direction sensor is arranged along the horizontal direction and is used for measuring second wind direction information;
the input end of the control unit is connected with the first wind direction sensor and the second wind direction sensor, and the output end of the control unit is connected with the first driving unit and the second driving unit; the control unit is configured to: and receiving the first wind direction information and the second wind direction information, and controlling the first driving unit and the second driving unit to operate so that the exhaust direction of the fifth pipeline (15) is the same as the wind direction.
7. The flue gas nitrogen oxide denitration treatment apparatus according to claim 6, wherein the first drive unit includes a drive motor (33); a driving gear (17) is mounted on a rotating shaft of the driving motor (33), a driven gear (18) is fixedly mounted on the fourth pipeline (14), and the driving gear (17) is meshed with the driven gear (18);
the second drive unit comprises a multi-stroke cylinder (19); one end of the multi-stroke cylinder (19) is hinged to the side wall of the fourth pipeline (14), and the other end of the multi-stroke cylinder (19) is hinged to the side wall of the fifth pipeline (15).
8. The flue gas nitrogen oxide denitration treatment device according to claim 1, wherein a plurality of hearths (11) are provided, and a gas path adjusting device is installed between the hearths (11) and the first fan (4);
the gas circuit adjusting device comprises:
the air distribution body (20), the air distribution cavity is arranged in the air distribution body (20), and an air distribution outlet (20-2) and a plurality of air distribution inlets (20-1) which are communicated with the air distribution cavity are arranged on the air distribution body (20); the air distribution outlet (20-2) is communicated with the input end of the first fan (4);
the gas path assembly is provided with a plurality of third gas path units, and each third gas path unit is communicated with one air distribution inlet (20-1) and one smoke gas output port (11-1); the third air path unit comprises an installation pipeline (21), and a control valve and a flowmeter are arranged in the installation pipeline (21); the flowmeter is used for measuring a flue gas flow value;
the second control unit is connected with the flow meter of each third air path unit, and the output end of the second control unit is connected with the first fan (4) and the control valve of each third air path unit; the second control unit is configured to:
receiving all the flue gas flow values, and calculating the flue gas flow velocity value of each third gas path unit;
acquiring the minimum value in the flue gas flow velocity values;
adjusting the rotation speed of the first fan (4) to enable the minimum value to be within a set range;
and adjusting the opening degree of the control valve in each third gas path unit so as to enable the flue gas flow rate value of all the third gas path units to be within the set range.
9. The flue gas nitrogen oxide denitration treatment device according to claim 1, wherein a flow guide device is installed in the discharge pipeline (3); the flow guide device comprises:
a drive rod (27), said drive rod (27) being coaxially rotatably mounted within said discharge duct (3); one end of the transmission rod (27) is provided with a fan blade (29); helical blades (28) are arranged on the side wall of the transmission rod (27) along the axial direction of the transmission rod;
a drive mechanism (30), said drive mechanism (30) being mounted on said discharge conduit (3) for driving said transmission rod (27) in rotation along its axis.
10. The flue gas nitrogen oxide denitration treatment device of claim 2, further comprising:
the second sensing unit comprises a first temperature sensor and a first air pressure sensor which are arranged in the reaction input port (1-1), a second temperature sensor and a second air pressure sensor which are arranged in the reaction output port (1-2), and a third air pressure sensor for detecting the injection pressure of the injection device;
a server configured to:
receiving real-time sensing information of the second sensing unit;
and sending the sensing information to an operation and maintenance terminal and/or a supervision terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210817575.7A CN114904394B (en) | 2022-07-13 | 2022-07-13 | Flue gas nitrogen oxide denitration treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210817575.7A CN114904394B (en) | 2022-07-13 | 2022-07-13 | Flue gas nitrogen oxide denitration treatment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114904394A true CN114904394A (en) | 2022-08-16 |
| CN114904394B CN114904394B (en) | 2023-03-21 |
Family
ID=82771899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210817575.7A Active CN114904394B (en) | 2022-07-13 | 2022-07-13 | Flue gas nitrogen oxide denitration treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114904394B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118073109A (en) * | 2024-04-17 | 2024-05-24 | 安徽格兰科新材料技术有限公司 | Electrode compounding method and system for graphene supercapacitor |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201171962Y (en) * | 2007-12-14 | 2008-12-31 | 广东省电力设计研究院 | Two-furnace one-tower type wet flue gas desulfurization device gas system |
| CN201572590U (en) * | 2009-10-01 | 2010-09-08 | 四川华清环境工程有限公司 | Industrial flue dust treatment device |
| CN204058394U (en) * | 2014-08-06 | 2014-12-31 | 深圳碳中和生物燃气股份有限公司 | A kind of biomass gasifying furnace blowing system |
| CN105387458A (en) * | 2015-12-04 | 2016-03-09 | 重庆川然节能技术有限公司 | System and method for reducing emission of oxynitride of combustion equipment |
| WO2017045602A1 (en) * | 2015-09-15 | 2017-03-23 | 中冶焦耐(大连)工程技术有限公司 | Coke oven flue gas desulfurization and denitrification combined purification process and apparatus |
| CN107727353A (en) * | 2017-08-28 | 2018-02-23 | 浙江大学 | One kind exports adjustable cryonetic wind tunnel exhaust chimney |
| CN207212331U (en) * | 2017-07-18 | 2018-04-10 | 中国石油化工股份有限公司 | A kind of well head pipeline Autosampler |
| CN207716647U (en) * | 2017-12-11 | 2018-08-10 | 张啟忠 | Energy-saving, environmental protection boiler |
| CN207879432U (en) * | 2017-11-24 | 2018-09-18 | 江苏科技大学 | A kind of circulation of tail gas processing system of the ship denitrating system based on SCR |
| CN207929003U (en) * | 2017-12-22 | 2018-10-02 | 苏州华安普新能源科技有限公司 | A kind of novel denitration system of power plant |
| CN208026032U (en) * | 2018-04-02 | 2018-10-30 | 孟州市远弘干燥设备研发有限公司 | The exhaust apparatus of intelligent control |
| CN109519958A (en) * | 2018-12-28 | 2019-03-26 | 启明星宇节能科技股份有限公司 | The fresh air flue gas proportion adjustment equipment of low nitrogen burning |
| CN111841289A (en) * | 2020-07-27 | 2020-10-30 | 曾珊珊 | Barbecue smoke treatment device with angle changed along with wind direction outdoors |
| CN112774354A (en) * | 2021-01-13 | 2021-05-11 | 王小辉 | Waste gas purification device |
| CN213725799U (en) * | 2020-10-10 | 2021-07-20 | 临沂市阳光热力有限公司 | Circulating fluidized bed boiler denitration system |
| CN114315103A (en) * | 2021-12-20 | 2022-04-12 | 芜湖东旭光电科技有限公司 | Kiln pressure control system and kiln assembly |
-
2022
- 2022-07-13 CN CN202210817575.7A patent/CN114904394B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201171962Y (en) * | 2007-12-14 | 2008-12-31 | 广东省电力设计研究院 | Two-furnace one-tower type wet flue gas desulfurization device gas system |
| CN201572590U (en) * | 2009-10-01 | 2010-09-08 | 四川华清环境工程有限公司 | Industrial flue dust treatment device |
| CN204058394U (en) * | 2014-08-06 | 2014-12-31 | 深圳碳中和生物燃气股份有限公司 | A kind of biomass gasifying furnace blowing system |
| WO2017045602A1 (en) * | 2015-09-15 | 2017-03-23 | 中冶焦耐(大连)工程技术有限公司 | Coke oven flue gas desulfurization and denitrification combined purification process and apparatus |
| CN105387458A (en) * | 2015-12-04 | 2016-03-09 | 重庆川然节能技术有限公司 | System and method for reducing emission of oxynitride of combustion equipment |
| CN207212331U (en) * | 2017-07-18 | 2018-04-10 | 中国石油化工股份有限公司 | A kind of well head pipeline Autosampler |
| CN107727353A (en) * | 2017-08-28 | 2018-02-23 | 浙江大学 | One kind exports adjustable cryonetic wind tunnel exhaust chimney |
| CN207879432U (en) * | 2017-11-24 | 2018-09-18 | 江苏科技大学 | A kind of circulation of tail gas processing system of the ship denitrating system based on SCR |
| CN207716647U (en) * | 2017-12-11 | 2018-08-10 | 张啟忠 | Energy-saving, environmental protection boiler |
| CN207929003U (en) * | 2017-12-22 | 2018-10-02 | 苏州华安普新能源科技有限公司 | A kind of novel denitration system of power plant |
| CN208026032U (en) * | 2018-04-02 | 2018-10-30 | 孟州市远弘干燥设备研发有限公司 | The exhaust apparatus of intelligent control |
| CN109519958A (en) * | 2018-12-28 | 2019-03-26 | 启明星宇节能科技股份有限公司 | The fresh air flue gas proportion adjustment equipment of low nitrogen burning |
| CN111841289A (en) * | 2020-07-27 | 2020-10-30 | 曾珊珊 | Barbecue smoke treatment device with angle changed along with wind direction outdoors |
| CN213725799U (en) * | 2020-10-10 | 2021-07-20 | 临沂市阳光热力有限公司 | Circulating fluidized bed boiler denitration system |
| CN112774354A (en) * | 2021-01-13 | 2021-05-11 | 王小辉 | Waste gas purification device |
| CN114315103A (en) * | 2021-12-20 | 2022-04-12 | 芜湖东旭光电科技有限公司 | Kiln pressure control system and kiln assembly |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118073109A (en) * | 2024-04-17 | 2024-05-24 | 安徽格兰科新材料技术有限公司 | Electrode compounding method and system for graphene supercapacitor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114904394B (en) | 2023-03-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104722203B (en) | A kind of SCR denitration control system of flue gas of heating furnace and method | |
| CN114904394B (en) | Flue gas nitrogen oxide denitration treatment device | |
| US5431893A (en) | Cleaning exhaust gases from combustion installations | |
| CN103170224A (en) | Reducing agent supplying method in incineration facility and reducing agent supplying device | |
| CN208642342U (en) | Ammonia before a kind of processing of flue gas SCR denitration dilutes structure | |
| CN108518698A (en) | Smoke catalytic recycling device | |
| CN109351178B (en) | Anti-blocking control method and system for thermal power station air pre-heater and thermal power station air pre-heater system | |
| CN207928976U (en) | A kind of SCR denitration spray ammonia regulator control system with feedforward measurement links | |
| CN111054171A (en) | Spraying device, method and system for sintering flue gas circulation sealing cover | |
| KR102348571B1 (en) | Mist/vortex contact type smart removal device for nitrogen oxides in combustion gas consisting of cone-shaped ammonia water mist spraying and vortex in the bottom direction of combustion gas | |
| CN210448728U (en) | SCR denitrification facility with catalyst activity on-line measuring system | |
| CN211462709U (en) | Boiler flue gas desulfurization device | |
| CN210613302U (en) | But whirl board reaction system of automatically regulated blade angle | |
| CN209530547U (en) | A kind of dedusting type SCR urea pyrolysis equipment | |
| CN214287495U (en) | Box-type ozone denitration system | |
| CN202478787U (en) | Flue gas cleaning device in semidry method for circulating fluidized bed | |
| JPH03229911A (en) | Method to remove nitrogen oxide from diesel engine exhaust | |
| CN213761282U (en) | Boiler ration is mended medicine device | |
| CN217662572U (en) | SCR denitration hot air system device | |
| CN114570202B (en) | Flue gas denitration system and flue gas denitration method | |
| CN214914943U (en) | Industrial environment-friendly catalytic unit for flue gas denitration | |
| CN114618273B (en) | Coal-fired flue gas sulfur trioxide step control method based on LSTM neural network | |
| CN216062691U (en) | High-efficient desulfurization system of dry quenching environmental dust removal flue gas | |
| CN218608780U (en) | High-stability tower-type denitration equipment | |
| CN219376648U (en) | Flue gas denitration equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |