CN213556275U

CN213556275U - Steam drum boiler with denitration mechanism

Info

Publication number: CN213556275U
Application number: CN202022583713.9U
Authority: CN
Inventors: 张清耀
Original assignee: Inner Mongolia Mengdian Huaneng Thermal Power Corp Ltd Wuhai Power Plant
Current assignee: Inner Mongolia Mengdian Huaneng Thermal Power Corp Ltd Wuhai Power Plant
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-06-29
Anticipated expiration: 2030-11-10

Abstract

The utility model discloses a drum boiler with a denitration mechanism, which relates to the technical field of drum boilers and comprises a bottom plate, the top of the bottom plate is fixedly connected with a drum boiler body, the top of the bottom plate and one side of the drum boiler body are fixedly connected with a purifying device, the top of the bottom plate is fixedly connected with a heating box between the drum boiler body and the purifying device, the top of the heating box is fixedly connected with an evaporation box, the drum boiler with the denitration mechanism is provided with the evaporation box, the rotating rod and the heating box, the air suction end of the second air pump sucks the inside of the heating box, then the air outlet end of the heating box discharges air into the communicating pipe, then the air pushes the blades to move, make the blade drive the dwang and rotate for the inside ammoniacal liquor of evaporating box is stirred to the dwang, thereby makes the evaporation rate of ammoniacal liquor increase, thereby provides the denitration speed to the flue gas.

Description

Steam drum boiler with denitration mechanism

Technical Field

The utility model relates to a drum boiler technical field specifically is a drum boiler with denitration mechanism.

Background

The boiler is a device which heats working media to certain parameters by utilizing heat energy or other energy released during fuel combustion, the fuel used by the boiler comprises three types of solid, liquid and gas, the solid fuel mainly comprises coal, the liquid fuel comprises light diesel oil, heavy oil, residual oil, crude oil and the like, the gas fuel mainly comprises natural gas, liquefied petroleum gas, urban gas and the like, therefore, a large amount of toxic and harmful gas is generated during the combustion process of the combustion materials, and therefore, the desulfurization and denitrification treatment needs to be carried out on the flue gas after the combustion of the boiler. SCR catalysts are composed of an active metal and a ceramic body having a porous structure. The catalyst has active sites within the pores. These active sites are acidic groups in the structure of the compound where the reduction reaction takes place. However, the evaporation speed of the ammonia liquid in the existing denitration mechanism is slow, so that the denitration efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a steam pocket boiler with denitration mechanism has solved the problem of proposing in the above-mentioned background art.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a drum boiler with a denitration mechanism comprises a bottom plate, wherein a drum boiler body is fixedly connected to the top of the bottom plate, a purification device is fixedly connected to the top of the bottom plate and located on one side of the drum boiler body, a heating box is fixedly connected to the top of the bottom plate and located between the drum boiler body and the purification device, an evaporation box is fixedly connected to the top of the heating box, a first electric heating rod is fixedly connected to the inner cavity of the heating box, a first air pump is fixedly connected to one side, close to the purification device, of the heating box, the air outlet end of the first air pump extends into the heating box, a second air pump is fixedly connected to the top of the heating box and located on one side of the evaporation box, the air suction end of the second air pump extends into the heating box, a communicating pipe is fixedly connected to the top of the heating box and located below the evaporation box, and the bottom of the inner cavity of the communicating pipe is, the fixed cover in the outside of dwang has connect the blade, inside the top of dwang extended to the evaporation case, the fixed cover in the outside of evaporation case has connect the heating jacket, the one end fixedly connected with connecting pipe of communicating pipe, the one end of connecting pipe extends to inside the heating jacket, one side fixedly connected with muffler of connecting pipe is kept away from to the heating jacket, the one end of muffler extends to inside the heating case, one side fixedly connected with outlet duct of evaporation case, the inside round pin mechanism that takes off that is provided with of purifier, it includes the cowling panel to take off the round pin mechanism, the inside fixedly connected with cowling panel of purifier, the inside below fixedly connected with SCR catalyst that just is located the cowling panel of purifier, one side fixedly connected with air purifying pipe of purifier.

Preferably, one side fixedly connected with third air pump that purifier kept away from the gas purification pipe, the intake end fixedly connected with blender of third air pump, and the one end fixed connection of blender and outlet duct, the fixedly connected with spray tube of giving vent to anger of third air pump, the one end of spray tube extends to inside the purifier.

Preferably, an ammonia storage tank is arranged at the top of the evaporation tank.

Preferably, a flue gas pipe is arranged at the top of the drum boiler body, and one end of the flue gas pipe extends to the inside of the purifying device.

Preferably, the nozzle is located below the fairing.

Preferably, a second electric heating rod is fixedly connected inside the heating sleeve.

The utility model provides a drum boiler with denitration mechanism possesses following beneficial effect:

this steam pocket boiler with denitration mechanism, through being provided with the evaporating box, dwang and heating cabinet, the end of breathing in of second air pump inhales the heating cabinet is inside, then the end of giving vent to anger of heating cabinet is discharged into the intercommunication intraduct with gas, then gaseous promotion blade removes for the blade drives the dwang and rotates, makes the dwang mix the inside ammoniacal liquor of evaporating cabinet, thereby makes the evaporation rate of ammoniacal liquor increase, thereby provides the denitration speed to the flue gas.

Drawings

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

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

fig. 3 is a schematic view of the internal structure of the evaporation box and the heating box of the present invention.

In the figure: 1. a base plate; 2. a drum boiler body; 3. a purification device; 4. a heating box; 5. an evaporation tank; 6. a first air pump; 7. a first electrical heater rod; 8. a second air pump; 9. a communicating pipe; 10. rotating the rod; 11. a blade; 12. heating a jacket; 13. a second electrical heater rod; 14. a connecting pipe; 15. an air return pipe; 16. an air outlet pipe; 17. a third air pump; 18. a nozzle; 19. a pin removal mechanism; 1901. a rectifying plate; 1903. an SCR catalyst; 1904. purifying the gas pipe; 20. a flue gas pipe; 21. an ammonia storage tank.

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 to 3, the present invention provides a technical solution: a drum boiler with a denitration mechanism comprises a bottom plate 1, a drum boiler body 2 is fixedly connected to the top of the bottom plate 1, a purification device 3 is fixedly connected to the top of the bottom plate 1 and is positioned on one side of the drum boiler body 2, a heating box 4 is fixedly connected to the top of the bottom plate 1 and is positioned between the drum boiler body 2 and the purification device 3, an evaporation box 5 is fixedly connected to the top of the heating box 4, a first electric heating rod 7 is fixedly connected to the inner cavity of the heating box 4, a first air pump 6 is fixedly connected to one side of the heating box 4 close to the purification device 3, the air outlet end of the first air pump 6 extends into the heating box 4, a second air pump 8 is fixedly connected to the top of the heating box 4 and is positioned on one side of the evaporation box 5, the air suction end of the second air pump 8 extends into the heating box 4, a communicating pipe 9 is fixedly connected to the top of the heating box 4, the bottom of communicating pipe 9 inner chamber is rotated and is connected with dwang 10, the fixed blade 11 that has cup jointed in outside of dwang 10, the top of dwang 10 extends to inside 5 of evaporating box, the fixed heating jacket 12 that has cup jointed in outside of evaporating box 5, the one end fixedly connected with connecting pipe 14 of communicating pipe 9, the one end of connecting pipe 14 extends to inside 12 of heating jacket, one side fixedly connected with muffler 15 that connecting pipe 14 was kept away from to heating jacket 12, the one end of muffler 15 extends to inside 4 of heating box, one side fixedly connected with outlet duct 16 of evaporating box 5, the inside round pin mechanism 19 that is provided with of purifier 3, round pin mechanism 19 includes cowling plate 1901, the inside fixedly connected with cowling plate 1901 of purifier 3, the inside below fixedly connected with SCR catalyst 1903 that just is located cowling plate 1901 of purifier 3, one side fixedly connected with clean trachea 1904 of purifier.

One side of the purifying device 3 far away from the purified air pipe 1904 is fixedly connected with a third air pump 17, the air suction end of the third air pump 17 is fixedly connected with a mixer, the mixer is fixedly connected with one end of an air outlet pipe 16, the air outlet end of a third air pump 17 is fixedly connected with an air outlet pipe 18, one end of the air outlet pipe 18 extends into the purifying device 3, the practicability of the pin removing mechanism 19 is improved, an ammonia storage box 21 is arranged at the top of the evaporation box 5, ammonia liquid is conveniently stored, a flue gas pipe 20 is arranged at the top of the steam drum boiler body 2, one end of the flue gas pipe 20 extends into the purifying device 3, make the inside flue gas of drum boiler body 2 pass through inside flue gas pipe 20 inputs to purifier 3, and spray tube 18 is located cowling panel 1901's below, has improved the practicality of this boiler, and the inside fixedly connected with second electric heater rod 13 of heating jacket 12 for the inside ammonia evaporation rate of evaporating box 5 is very fast.

In conclusion, in the drum boiler with the denitration mechanism, when in use, the flue gas inside the drum boiler body 2 enters the inside of the purification device 3 through the flue gas pipe 20, the ammonia liquid inside the ammonia storage tank 21 enters the evaporation tank 5, then the operator starts the first air pump 6 to enable the air suction end of the first air pump 6 to suck the outside air, the air outlet end of the first air pump 6 is input into the heating tank 4, meanwhile, the first electric heating rod 7 heats the air inside the heating tank 4, then the air suction end of the second air pump 8 sucks the inside of the heating tank 4, then the air outlet end of the heating tank 4 discharges the gas into the communicating pipe 9, then the gas pushes the blade 11 to move, so that the blade 11 drives the rotating rod 10 to rotate, the rotating rod 10 stirs the ammonia liquid inside the evaporation tank 5, and simultaneously, the gas inside the communicating pipe 9 enters the heating jacket 12 through the connecting pipe 14, at this time, the second electric heating rod 13 heats the gas inside the heating jacket 12, so that the ammonia liquid inside the evaporation box 5 is heated, the ammonia liquid is evaporated into ammonia gas, the ammonia gas enters the mixer through the gas outlet pipe 16 and then enters the third air pump 17, and then the mixed gas is discharged into the purification device 3 through the gas outlet end of the third air pump 17, so that the flue gas is denitrated by matching with the SCR catalyst 1903.

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 utility model provides a drum boiler with denitration mechanism, includes bottom plate (1), its characterized in that: the steam drum boiler comprises a bottom plate (1), a steam drum boiler body (2) is fixedly connected to the top of the bottom plate (1), a purifying device (3) is fixedly connected to one side of the bottom plate (1) and is located on one side of the steam drum boiler body (2), a heating box (4) is fixedly connected to the top of the bottom plate (1) and is located between the steam drum boiler body (2) and the purifying device (3), an evaporation box (5) is fixedly connected to the top of the heating box (4), a first electric heating rod (7) is fixedly connected to the inner cavity of the heating box (4), a first air pump (6) is fixedly connected to one side, close to the purifying device (3), of the heating box (4), an air outlet end of the first air pump (6) extends to the inside of the heating box (4), a second air pump (8) is fixedly connected to one side of the evaporation box (5) and is located on the top of the heating box (4), and an air suction end of the second air, the top of heating cabinet (4) just is located below fixedly connected with communicating pipe (9) of evaporating case (5), the bottom of communicating pipe (9) inner chamber is rotated and is connected with dwang (10), the outside of dwang (10) is fixed to have cup jointed blade (11), the top of dwang (10) extends to inside evaporating case (5), the outside of evaporating case (5) is fixed to have cup jointed heating jacket (12), the one end fixedly connected with connecting pipe (14) of communicating pipe (9), the one end of connecting pipe (14) extends to inside heating jacket (12), one side fixedly connected with muffler (15) of connecting pipe (14) are kept away from to heating jacket (12), the one end of muffler (15) extends to inside heating cabinet (4), one side fixedly connected with outlet duct (16) of evaporating case (5), purifier (3) inside is provided with out of stock mechanism (19), the denitration mechanism (19) comprises a rectifying plate (1901), the rectifying plate (1901) is fixedly connected in the purifying device (3), the SCR catalyst (1903) is fixedly connected in the purifying device (3) and is located below the rectifying plate (1901), and a gas purifying pipe (1904) is fixedly connected to one side of the purifying device (3).

2. The drum boiler with a denitration mechanism of claim 1, characterized in that: one side fixedly connected with third air pump (17) of gas purification pipe (1904) is kept away from in purifier (3), the intake end fixedly connected with blender of third air pump (17), and the one end fixed connection of blender and outlet duct (16), the one end fixedly connected with spray tube (18) of giving vent to anger of third air pump (17), the one end of spray tube (18) extends to inside purifier (3).

3. The drum boiler with a denitration mechanism of claim 1, characterized in that: an ammonia storage tank (21) is arranged at the top of the evaporation tank (5).

4. The drum boiler with a denitration mechanism of claim 1, characterized in that: the top of the drum boiler body (2) is provided with a flue gas pipe (20), and one end of the flue gas pipe (20) extends to the inside of the purifying device (3).

5. The drum boiler with a denitration mechanism of claim 2, characterized in that: the spray pipe (18) is positioned below the rectifying plate (1901).

6. The drum boiler with a denitration mechanism of claim 1, characterized in that: and a second electric heating rod (13) is fixedly connected inside the heating sleeve (12).