CN215196239U

CN215196239U - Device for controlling emission of nitrogen oxides and carbon content in flue gas of power plant

Info

Publication number: CN215196239U
Application number: CN202121219688.4U
Authority: CN
Inventors: 郭志鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2021-12-17
Anticipated expiration: 2031-06-02

Abstract

The utility model relates to the technical field of flue gas treatment, in particular to a control device for discharging nitrogen oxides and carbon content in flue gas of a power plant, which comprises a shell, wherein both ends of the shell are respectively provided with a flue gas inlet and a flue gas outlet, a partition board in the shell is sequentially provided with a filtering bin, a nitrogen oxide removing bin, a carbon treatment bin and a filtering bin, nitrogen oxide desorption storehouse and carboncreatment storehouse are arranged along the circulation of flue gas direction, and the connection of flue gas import internal rotation is equipped with turbine blade, is equipped with drive gear on the turbine blade, crosses the connection of filter storehouse internal rotation and is equipped with first carousel filter core, is fixed with the driven gear who meshes with drive gear on the rotation axis of first carousel filter core, all is equipped with V type opening on the both sides bulkhead of filter storehouse, and V type opening sets up with the flue gas import relatively, the utility model discloses the high-efficient adsorption control of nitrogen oxide and carbon content in the flue gas of can realizing power plant has practicality, is fit for promoting.

Description

Device for controlling emission of nitrogen oxides and carbon content in flue gas of power plant

Technical Field

The utility model relates to a flue gas treatment technical field especially relates to a nitrogen oxide and carbon content discharge control device in power plant flue gas.

Background

Nitrogen oxides (NOx) are one of the main pollutants in the atmosphere. The flue gas generated by combustion of the coal-fired power plant is a main fixed emission source of NOx, so that denitration of the flue gas of the power plant is an effective method for reducing the total emission amount of nitrogen oxides and relieving atmospheric pollution. Because the flue gas of the power plant has the particularity of large volume and low NOx concentration, the conventional methods for removing gas, such as a common absorption method, an adsorption method and the like, have unobvious effects in flue gas denitration, and therefore, the application is less.

At present, a plurality of research teams hope for flue gas denitration is held in the NOx reduction method, particularly, SCR and SNCR methods which take ammonia gas, urea and the like as reducing agents are widely researched, but serious defects exist, the urea treatment efficiency is low, large-particle impurities in flue gas influence reaction, and the treatment efficiency is low, so that a device for controlling the emission of nitrogen oxides and carbon content in the flue gas of a power plant is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the existing urea treatment efficiency is low in the prior art, the large-particle impurities in the flue gas influence the reaction, the defect of low treatment efficiency, and the nitrogen oxide and carbon content emission control device in the flue gas of the power plant are provided.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the design is a control device for discharging nitrogen oxides and carbon content in flue gas of a power plant, which comprises a shell, wherein a flue gas inlet and a flue gas outlet are respectively arranged at two ends of the shell, a filter bin, a nitrogen oxide removing bin and a carbon treatment bin are sequentially arranged on a partition plate in the shell, the filter bin, the nitrogen oxide removing bin and the carbon treatment bin are arranged along the flue gas flowing direction, turbine blades are arranged in the flue gas inlet in a rotating connection manner, a driving gear is arranged on the turbine blades, a first rotary disc filter element is arranged in the filter bin in a rotating connection manner, a driven gear meshed with the driving gear is fixed on a rotating shaft of the first rotary disc filter element, V-shaped openings are respectively arranged on bin walls at two sides of the filter bin, the V-shaped openings are arranged opposite to the flue gas inlet, the nitrogen oxide removing bin is of a double-layer bin structure, and the bottom end of a middle partition plate of the nitrogen oxide removing bin is provided with openings communicated with the double-layer bin, the top of the bin wall of the nitrogen oxide removal bin and the top of the bin wall of the carbon treatment bin are provided with communication openings, urea is filled in the nitrogen oxide removal bin, a second rotary disc filter element is rotatably connected in the carbon treatment bin through a rotating shaft, and one side of the second rotary disc filter element is provided with a filter element matched with the communication openings.

Furthermore, the filter element is a multi-layer activated carbon filter element structure, and the activated carbon is copper-loaded activated carbon which is subjected to copper salt soaking treatment.

Furthermore, a high-pressure spray head is fixedly arranged on one side bin wall of the filter bin, and the spraying direction of the high-pressure spray head is opposite to the smoke flowing direction.

Further, one side that the filter core was kept away from to the second carousel filter core is equipped with L type connector, the casing top is fixed with the backward flow air flue, the input and the L type connector intercommunication setting of backward flow air flue, the output and the flue gas inlet intercommunication setting of backward flow air flue, one side of exhanst gas outlet is fixed and is equipped with driving motor, driving motor's output is connected with the pivot transmission of second carousel filter core, one side of exhanst gas outlet is fixed with detection device, detection device is arranged in detecting nitrogen oxide and carbon content numerical value in the flue gas.

Furthermore, one side and the bottom of the filtering bin, the nitrogen oxide removing bin and the carbon treatment bin are provided with a feeding port and a discharging port.

The utility model provides a pair of nitrogen oxide and carbon content discharge control device in power plant flue gas, beneficial effect lies in: the utility model relates to a shell structure design with a filtering bin, a nitrogen oxide removing bin and a carbon processing bin, and a turbine blade is arranged at a flue gas inlet, when in use, when high-temperature flue gas passes through the flue gas inlet, the turbine blade is driven to rotate, and then a first rotary disc filter element of the filtering bin is driven to rotate, when the flue gas passes through the filtering bin, large-particle impurities are filtered by the first rotary disc filter element, in the rotating process of the first rotary disc filter element, adsorbed impurities are washed by a high-pressure spray head and flow into the filtering bin, when the flue gas continuously advances, and when passing through the nitrogen oxide removing bin, nitrogen oxide in the flue gas is separated from urea in the nitrogen oxide removing bin in a reaction way, carbon monoxide in the flue gas is adsorbed by the filter element after passing through the carbon processing bin, when a detection device detects that the emission index of the flue gas outlet does not reach a designed value, a second rotary disc filter element rotates one hundred eighty degrees under the driving of a driving motor, make L type connector and backward flow air flue intercommunication, get into the flue gas import again and carry out the flue gas and handle to realize the high-efficient adsorption control of nitrogen oxide and carbon content in the flue gas of power plant, have practicality, be fit for promoting.

Drawings

Fig. 1 is a schematic front structural view of a device for controlling emission of nitrogen oxides and carbon in flue gas of a power plant according to the present invention;

fig. 2 is a schematic side view of a device for controlling the emission of nitrogen oxides and carbon in flue gas of a power plant according to the present invention;

fig. 3 is a schematic cross-sectional structure view of a device for controlling the emission of nitrogen oxides and carbon in flue gas of a power plant according to the present invention;

fig. 4 is a schematic view of a cross-sectional structure of the backflow air duct provided in the present invention when the backflow air duct is aligned with the L-shaped connector.

In the figure: the device comprises a shell 1, a flue gas inlet 2, a backflow air channel 3, turbine blades 4, a driving gear 41, a support 5, a feeding port 6, a discharging port 7, a flue gas outlet 8, a detection device 81, a filtering bin 11, a first rotary disc filter element 12, a driven gear 121, a high-pressure nozzle 13, a nitrogen oxide removing bin 14, a carbon treatment bin 15, a second rotary disc filter element 16, an L-shaped connecting port 161, a filter element 162, a driving motor 17 and a carbon treatment bin 18.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-4, a device for controlling emission of nitrogen oxides and carbon content in flue gas of a power plant comprises a casing 1, a flue gas inlet 2 and a flue gas outlet 8 are respectively arranged at two ends of the casing 1, a filter bin 11, a nitrogen oxide removal bin 14 and a carbon treatment bin 18 are sequentially arranged on a partition plate in the casing 1, the filter bin 11, the nitrogen oxide removal bin 14 and the carbon treatment bin 18 are arranged along the flow direction of flue gas, a turbine blade 4 is rotatably connected to the flue gas inlet 2, a driving gear 41 is arranged on the turbine blade 4, a first rotary disc filter element 12 is rotatably connected to the filter bin 11, a driven gear 121 meshed with the driving gear 41 is fixed on a rotary shaft of the first rotary disc filter element 12, V-shaped openings are respectively arranged on bin walls at two sides of the filter bin 11, the V-shaped openings are arranged opposite to the flue gas inlet 2, the nitrogen oxide removal bin 14 is of a double-bin structure, an opening communicated with the double-bin is arranged at the bottom end of the partition plate in the middle of the nitrogen oxide removal bin 14, the top of the bin wall of the nitrogen oxide removing bin 14 and the carbon treatment bin 18 is provided with a communication opening, the nitrogen oxide removing bin 14 is filled with urea, the carbon treatment bin 18 is connected with a second rotary disc filter element 16 in a rotating manner through a rotating shaft, and one side of the second rotary disc filter element 16 is provided with a filter element 162 matched with the communication opening.

The filter element 162 is a multi-layer activated carbon filter element structure, the activated carbon is copper-loaded activated carbon which is soaked by copper salt, a high-pressure spray nozzle 13 is fixedly arranged on a side bin wall of the filtering bin 11, and the spraying direction of the high-pressure spray nozzle 13 is opposite to the smoke flowing direction.

One side that filter core 162 was kept away from to second carousel filter core 16 is equipped with

L type connector

161, 1 top of casing is fixed with backward flow air flue 3, the input and the L type connector 161 intercommunication setting of backward flow air flue 3, the output and the 2 intercommunication settings of flue gas inlet of backward flow air flue 3, the fixed driving motor 17 that is equipped with in one side of exhanst gas outlet 8, driving motor 17's output and second carousel filter core 16's pivot transmission are connected, one side of exhanst gas outlet 8 is fixed with detection device 81, detection device 81 is arranged in detecting nitrogen oxide and carbon content numerical value in the flue gas, filter storehouse 11, one side and the bottom in nitrogen oxide desorption storehouse 14 and carbon treatment storehouse 18 all are equipped with pan feeding mouth 6 and bin outlet 7.

The utility model discloses a have and filter storehouse 11, the casing 1 structural design in nitrogen oxide desorption storehouse 14 and carbon treatment storehouse 18, and set up turbine blade 4 in flue gas inlet 2 department, when using, when the high temperature flue gas passes through flue gas inlet 2, it is rotatory to drive turbine blade 4, and then drive the first carousel filter core 12 of filtering storehouse 11 and take place rotatoryly, when the flue gas passes through filtering storehouse 11, the impurity of large granule is filtered by first carousel filter core 12, in the rotatory process of first carousel filter core, adsorbed impurity is washed by high pressure nozzle 13 and flows into in filtering storehouse 11, in flue gas continuous marching forward, when passing through nitrogen oxide desorption storehouse 14, nitrogen oxide in the flue gas breaks away from with the urea reaction in nitrogen oxide desorption storehouse 14, in passing through carbon treatment storehouse 18, carbon monoxide in the flue gas is then adsorbed by filter core 162, when detection device 81 detects that the emission index that 8 plays of exhanst gas outlet does not reach the design value, second carousel filter core 16 rotates one hundred eighty degrees under driving motor 17's drive, makes L type connector 161 and backward flow air flue 3 intercommunication, gets into flue gas inlet 2 again and carries out the flue gas and handle to realize nitrogen oxide and carbon content's high-efficient adsorption control in the flue gas of power plant, have practicality, be fit for promoting.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The device for controlling emission of nitrogen oxides and carbon content in flue gas of a power plant comprises a shell (1) and is characterized in that a flue gas inlet (2) and a flue gas outlet (8) are respectively arranged at two ends of the shell (1), a filter bin (11), a nitrogen oxide removal bin (14) and a carbon treatment bin (18) are sequentially arranged on an inner partition plate of the shell (1), the filter bin (11), the nitrogen oxide removal bin (14) and the carbon treatment bin (18) are arranged along the flue gas circulation direction, turbine blades (4) are rotatably connected to the flue gas inlet (2), a driving gear (41) is arranged on each turbine blade (4), a first rotary disc filter element (12) is rotatably connected to the filter bin (11), a driven gear (121) meshed with the driving gear (41) is fixed on a rotary shaft of the first rotary disc filter element (12), and V-shaped notches are respectively arranged on bin walls at two sides of the filter bin (11), v type opening and flue gas inlet (2) set up relatively, nitrogen oxide desorption storehouse (14) are double-deck storehouse structure, the bottom of the middle part baffle in nitrogen oxide desorption storehouse (14) is equipped with the opening in the double-deck storehouse of intercommunication, nitrogen oxide desorption storehouse (14) are equipped with the intercommunication opening with the bulkhead top in carbon treatment storehouse (18), nitrogen oxide desorption storehouse (14) intussuseption is filled with urea, rotate through the pivot in the carbon treatment storehouse (18) and be connected with second carousel filter core (16), one side of second carousel filter core (16) be equipped with intercommunication opening assorted filter core (162).

2. The device for controlling emission of nitrogen oxides and carbon in flue gas of power plant as claimed in claim 1, wherein said filter element (162) is a multi-layer activated carbon filter element structure, and said activated carbon is copper-loaded activated carbon treated by copper salt impregnation.

3. The device for controlling the emission of nitrogen oxides and carbon content in flue gas of a power plant according to claim 1, wherein a high-pressure spray nozzle (13) is fixedly arranged on one side wall of the filter bin (11), and the spraying direction of the high-pressure spray nozzle (13) is opposite to the flowing direction of the flue gas.

4. The discharge control device for nitrogen oxides and carbon contents in flue gas of a power plant according to claim 1, characterized in that one side of the second rotary disc filter element (16) far away from the filter element (162) is provided with an L-shaped connector (161), the top of the casing (1) is fixed with a backflow air passage (3), the input end of the backflow air passage (3) is communicated with the L-shaped connector (161), the output end of the backflow air passage (3) is communicated with the flue gas inlet (2), one side of the flue gas outlet (8) is fixedly provided with a driving motor (17), the output end of the driving motor (17) is in transmission connection with a rotating shaft of the second rotary disc filter element (16), one side of the flue gas outlet (8) is fixed with a detection device (81), and the detection device (81) is used for detecting nitrogen oxides and carbon contents in the flue gas.

5. The emission control device of nitrogen oxides and carbon content in flue gas of power plant according to claim 1, characterized in that the filtering bin (11), the nitrogen oxides removing bin (14) and the carbon treatment bin (18) are provided with a feeding port (6) and a discharging port (7) at one side and at the bottom.