CN211051251U

CN211051251U - Pulverized coal fired boiler denitration device with aeration function

Info

Publication number: CN211051251U
Application number: CN201922009347.3U
Authority: CN
Inventors: 胡顺涛
Original assignee: Qinghai Nationalities University
Current assignee: Qinghai Nationalities University
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2020-07-21
Anticipated expiration: 2029-11-19

Abstract

The utility model discloses a pulverized coal boiler denitrification facility with aeration function, including denitration reation kettle, denitration reation kettle's top fixedly connected with flue gas passageway, the outer wall department of flue gas passageway runs through and installs the intake pipe, denitration reation kettle's inside fixed mounting in proper order has first catalysis bed, second catalysis bed and third catalysis bed, first catalysis bed, second catalysis bed and third catalysis bed are upper and lower position in proper order and arrange, the fixed reaction tank that is equipped with in bottom of denitration reation kettle inner chamber, denitration reation kettle's positive fixed mounting has flush mounting plate of switch, flush mounting plate of switch's surface department fixed mounting respectively has display screen and two control button, the beneficial effects of the utility model are that: through aeration machine and the blast pipe that is equipped with, be convenient for carry out the aeration to the inside aqueous ammonia of reaction tank, provide more oxygen for reaction rate, and then guarantee the efficiency of denitration, nitrogen oxide's content in the reduction emission improves the feature of environmental protection.

Description

Pulverized coal fired boiler denitration device with aeration function

Technical Field

The utility model relates to a pulverized coal boiler denitrification facility, in particular to pulverized coal boiler denitrification facility with aeration function.

Background

The importance of the process of removing nitrogen oxides from combustion fumes to prevent environmental pollution has been pointed out as a worldwide problem.

In the buggy of pulverized coal boiler burning, can produce the flue gas that contains nitrogen oxide in a large number, in order to protect ecological environment, consequently design denitrification facility ten minutes is very important, however current denitrification facility still has some weak points, current denitrification facility's denitration inefficiency, lead to containing more nitrogen oxide in the flue gas of emission, very unfavorable to the environment, the inside catalysis of current denitrification facility blocks up easily simultaneously, lead to having to need frequent change, it is inconvenient to use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pulverized coal boiler denitrification facility with aeration function to the denitration inefficiency of the current denitrification facility that proposes in solving above-mentioned background art, lead to containing more nitrogen oxide in the flue gas of emission, very unfavorable to the environment, the inside catalysis of the denitrification facility of current while is blockked up easily, leads to having the problem that needs change frequently, awkward.

In order to achieve the above object, the utility model provides a following technical scheme: a denitration device of a pulverized coal fired boiler with an aeration function comprises a denitration reaction kettle, wherein a flue gas channel is fixedly connected to the top end of the denitration reaction kettle, an air inlet pipe is installed at the outer wall of the flue gas channel in a penetrating mode, two separated guide plates are fixedly arranged inside the flue gas channel, an activated carbon layer is filled between the two separated guide plates, a first catalytic bed, a second catalytic bed and a third catalytic bed are fixedly installed inside the denitration reaction kettle in sequence and are arranged in an upper-lower position in sequence, a reaction tank is fixedly arranged at the bottom of an inner cavity of the denitration reaction kettle, a mounting base is fixedly installed at the bottom of one side of the denitration reaction kettle, an aerator is fixedly installed at the top end of the mounting base, and an exhaust pipe of the aerator penetrates through the denitration reaction kettle and extends to the inside of the reaction tank, the fixed drain pipe that is equipped with in middle part of denitration reation kettle bottom, the drainage valve is installed to the opening part of drain pipe, denitration reation kettle's front fixed mounting has flush mounting plate of switch, flush mounting plate of switch's surface department fixed mounting respectively has display screen and two control button.

As a preferred technical scheme of the utility model, be equipped with between third catalysis bed and the reaction tank and reserve the catalysis bed, reserve catalysis bed and denitration reation kettle inside wall fixed connection.

As an optimal technical scheme of the utility model, the fixed heating plate that is equipped with a plurality of matrix distributions in the bottom of reaction tank inner chamber, heating plate and aeration machine are respectively through corresponding control button and external power supply electric connection.

As an optimal technical scheme of the utility model, the equal fixed mounting temperature sensor in four edges of reaction tank inner chamber, temperature sensor and display screen electric connection.

As an optimal technical scheme of the utility model, the bottom of denitration reation kettle opposite side is run through and is installed the aqueous ammonia filling pipe, the one end of aqueous ammonia filling pipe extends to the inside of reaction tank.

As an optimal technical scheme of the utility model, the one end threaded connection of flue gas passageway has the collection box.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model relates to a pulverized coal boiler denitrification facility with aeration function, aeration machine and blast pipe through being equipped with, be convenient for carry out the aeration to the inside aqueous ammonia of reaction tank, provide more oxygen, accelerate reaction rate, and then guarantee the efficiency of denitration, reduce nitrogen oxide's content in the emission, improve the feature of environmental protection, through guide plate and the activated carbon layer that is equipped with, be convenient for adsorb cigarette ash to the flue gas that gets into, avoid first catalysis bed, the jam takes place for second catalysis bed and third catalysis bed, do not need regular mediation change, high durability and convenient use.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic front view of the present invention;

fig. 3 is a schematic front structural view of the present invention.

In the figure: 1. a denitration reaction kettle; 2. a flue gas channel; 3. an air inlet pipe; 4. a collection box; 5. a baffle; 6. an activated carbon layer; 7. a first catalytic bed; 8. a second catalytic bed; 9. a third catalytic bed; 10. reserving a catalytic bed; 11. an aerator; 12. a reaction tank; 13. an exhaust pipe; 14. a drain conduit; 15. a drain valve; 16. an ammonia water filling pipe; 17. mounting a base; 18. a switch panel; 19. a heating plate; 20. a temperature sensor.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a pulverized coal boiler denitration device with an aeration function, including a denitration reactor 1, a flue gas channel 2 fixedly connected to a top end of the denitration reactor 1, an air inlet pipe 3 installed through an outer wall of the flue gas channel 2, two separated guide plates 5 fixedly installed inside the flue gas channel 2, an activated carbon layer 6 filled between the two separated guide plates 5, a first catalytic bed 7, a second catalytic bed 8 and a third catalytic bed 9 fixedly installed inside the denitration reactor 1 in sequence, the first catalytic bed 7, the second catalytic bed 8 and the third catalytic bed 9 are arranged in an up-down position in sequence, a reaction tank 12 fixedly installed at a bottom of an inner cavity of the denitration reactor 1, a mounting base 17 fixedly installed at a bottom of one side of the denitration reactor 1, an aerator 11 fixedly installed at a top end of the mounting base 17, an exhaust pipe 13 of the aerator 11 passes through the denitration reactor 1 and extends to an inside of the reaction tank 12, fixed drain pipe 14 that is equipped with in the middle part of denitration reation kettle 1 bottom, drain valve 15 is installed to drain pipe 14's opening part, and denitration reation kettle 1's front fixed mounting has flush mounting plate of switch 18, and flush mounting plate of switch 18's surface department fixed mounting respectively has display screen and two control button.

Preferably, a reserved catalytic bed 10 is arranged between the third catalytic bed 9 and the reaction tank 12, the reserved catalytic bed 10 is fixedly connected with the inner side wall of the denitration reaction kettle 1, so as to facilitate better use and prevent the first catalytic bed 7, the second catalytic bed 8 and the third catalytic bed 9 from being out of service, a plurality of heating sheets 19 distributed in a matrix are fixedly arranged at the bottom of the inner cavity of the reaction tank 12, the heating sheets 19 and the aerator 11 are respectively and electrically connected with an external power supply through corresponding control buttons, so as to facilitate heating of ammonia water in the reaction tank 12 and accelerate reaction rate, temperature sensors 20 are fixedly arranged at four corners of the inner cavity of the reaction tank 12, the temperature sensors 20 are electrically connected with a display screen, so as to facilitate real-time monitoring of temperature change and avoid increase of internal air pressure due to overhigh temperature, an ammonia water pipe 16 is installed at the bottom of the other side of the denitration reaction kettle 1 in a penetrating manner, and one end of the, be convenient for supply the denitrifier entering, convenient to use, the automated production of being convenient for, the one end threaded connection of flue gas passageway 2 has collection box 4, is convenient for collect the dust that drops, the processing of being convenient for.

When in specific use, the utility model relates to a pulverized coal boiler denitrification facility with aeration function, connect pulverized coal boiler through flange joint's mode intake pipe 3, in connecting the aqueous ammonia denitration agent feed system with aqueous ammonia filler pipe 16 again, when the flue gas along intake pipe 3 and flue gas passageway 2 entering denitration reation kettle 1's inside, through the filtration absorption of activated carbon layer 6, prevent that the cigarette ash from blockking up first catalytic bed 7, second catalytic bed 8 and third catalytic bed 9, the flue gas that enters denitration reation kettle 1 inside passes through first catalytic bed 7, the catalytic action of second catalytic bed 8 and third catalytic bed 9, enter the inside of reaction tank 12, nitrogen oxide in the flue gas reacts with the aqueous ammonia denitration agent, start control button, make aerator 11 aerate the inside of reaction tank 12, accelerate reaction rate, and then guarantee the efficiency of denitration efficiency, reduce the content of nitrogen oxide in the emission, improve the feature of environmental protection, through the denitration treatment of a cycle, nitrogen oxide turns into aqueous ammonia and nitrogen gas, opens drainage valve 15, and aqueous ammonia and nitrogen gas discharge to the external world along drainage pipe 14.

In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A pulverized coal boiler denitration device with an aeration function comprises a denitration reaction kettle (1), and is characterized in that a flue gas channel (2) is fixedly connected to the top end of the denitration reaction kettle (1), an air inlet pipe (3) is installed at the outer wall of the flue gas channel (2) in a penetrating mode, two separated guide plates (5) are fixedly arranged inside the flue gas channel (2), an activated carbon layer (6) is filled between the two separated guide plates (5), a first catalytic bed (7), a second catalytic bed (8) and a third catalytic bed (9) are fixedly installed inside the denitration reaction kettle (1) in sequence, the first catalytic bed (7), the second catalytic bed (8) and the third catalytic bed (9) are arranged in an up-down position in sequence, a reaction tank (12) is fixedly arranged at the bottom of the inner cavity of the denitration reaction kettle (1), and a mounting base (17) is fixedly installed at the bottom of one side of the denitration reaction kettle (1), the denitration reaction kettle is characterized in that an aerator (11) is fixedly mounted at the top end of the mounting base (17), an exhaust pipe (13) of the aerator (11) penetrates through the denitration reaction kettle (1) and extends to the inside of the reaction tank (12), an exhaust pipeline (14) is fixedly arranged in the middle of the bottom end of the denitration reaction kettle (1), an exhaust valve (15) is mounted at an opening of the exhaust pipeline (14), a switch panel (18) is fixedly mounted on the front side of the denitration reaction kettle (1), and a display screen and two control buttons are respectively fixedly mounted on the surface of the switch panel (18).

2. The pulverized coal fired boiler denitration device with the aeration function as set forth in claim 1, characterized in that: a reserved catalytic bed (10) is arranged between the third catalytic bed (9) and the reaction tank (12), and the reserved catalytic bed (10) is fixedly connected with the inner side wall of the denitration reaction kettle (1).

3. The pulverized coal fired boiler denitration device with the aeration function as set forth in claim 1, characterized in that: the bottom of the inner cavity of the reaction tank (12) is fixedly provided with a plurality of heating sheets (19) distributed in a matrix manner, and the heating sheets (19) and the aerator (11) are respectively and electrically connected with an external power supply through corresponding control buttons.

4. The pulverized coal fired boiler denitration device with the aeration function as set forth in claim 1, characterized in that: the temperature sensors (20) are fixedly mounted at four corners of the inner cavity of the reaction tank (12), and the temperature sensors (20) are electrically connected with the display screen.

5. The pulverized coal fired boiler denitration device with the aeration function as set forth in claim 1, characterized in that: an ammonia water filling pipe (16) is installed at the bottom of the other side of the denitration reaction kettle (1) in a penetrating mode, and one end of the ammonia water filling pipe (16) extends to the inside of the reaction tank (12).

6. The pulverized coal fired boiler denitration device with the aeration function as set forth in claim 1, characterized in that: one end of the smoke channel (2) is in threaded connection with a collecting box (4).