CN215027558U

CN215027558U - Boiler tail gas SOx/NOx control sectional type spray column device

Info

Publication number: CN215027558U
Application number: CN202120063037.4U
Authority: CN
Inventors: 余少华; 王岳
Original assignee: Changde Zhaofeng New Energy Technology Co ltd
Current assignee: Changde Zhaofeng New Energy Technology Co ltd
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2021-12-07
Anticipated expiration: 2031-01-11

Abstract

The utility model discloses a boiler tail gas SOx/NOx control sectional type spray column device belongs to boiler tail gas processing technology field. A sectional type spray tower device for desulfurization and denitrification of boiler tail gas comprises a spray box, wherein the top of the spray box is fixedly connected with a first water pump, one side of the first water pump is fixedly connected with a liquid pumping pipe, the bottom of the first water pump is fixedly connected with a liquid discharge pipe, the liquid discharge pipe extends to the inside of the spray box, and the bottom end of the liquid discharge pipe is fixedly connected with an upper liquid storage plate; the utility model discloses well alkali lye is spout from last shower nozzle, and the inside alkali lye of bin is spout once more simultaneously, but the harmful gas in the rational utilization alkali lye absorption tail gas, and the inside that the harmful gas through spraying incasement portion enters into the spray column through the outlet duct carries out the secondary absorption, and the acid gas intensive mixing in alkali lye and the tail gas, the heating pipe adopts the mode of electrical heating simultaneously for the inside temperature rise of spray column, alkali lye absorption effect is better.

Description

Boiler tail gas SOx/NOx control sectional type spray column device

Technical Field

The utility model relates to a boiler tail gas treatment technical field especially relates to a boiler tail gas SOx/NOx control sectional type spray column device.

Background

The boiler comprises a boiler and a furnace, hot water or steam generated in the boiler can directly provide heat energy for industrial production and people life, the hot water or the steam can be converted into mechanical energy through a steam power device, a large amount of harmful gas can be generated in the using process of the boiler, and the harmful gas components of NOx (mainly NO) and Sox (mainly SO2) can cause acid rain and photochemical smog and harm human health and the environment.

And most of formula as an organic whole of spray column for boiler tail gas, tail gas directly let in the spray column under the effect of draught fan in, take up an area of the space great, the spare part installation that the spray column is relevant is more troublesome, and absorbs the alkali lye concentration of tail gas unanimous, and the kind is single, can not rationally adjust alkali lye concentration according to harmful gas's in the tail gas content, leads to harmful gas absorption effect relatively poor even, and harmful gas spreads to outdoors, influences the environment.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving among the prior art integral type spray column occupation of land space big, the installation is more troublesome, can not rationally according to harmful gas's concentration adjustment alkali lye concentration, leads to alkali lye absorption effect relatively poor, the problem of polluted environment, and the boiler tail gas SOx/NOx control sectional type spray column device that provides.

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

a sectional type spray tower device for desulfurization and denitrification of boiler tail gas comprises a spray box, wherein the top of the spray box is fixedly connected with a first water pump, one side of the first water pump is fixedly connected with a liquid suction pipe, the bottom of the first water pump is fixedly connected with a liquid discharge pipe, the liquid discharge pipe extends into the spray box, the bottom end of the liquid discharge pipe is fixedly connected with an upper liquid storage plate, the bottom of the upper liquid storage plate is provided with an upper spray head, the bottom of the spray box is fixedly connected with a storage box, the lower surface of the spray box is provided with a water leakage hole, the bottom of the storage box is fixedly connected with a second water pump, one side of the second water pump is fixedly connected with a connecting pipe, the connecting pipe extends into the storage box, the top of the second water pump is fixedly connected with a water pipe, the water pipe extends into the spray box, and the top end of the water pipe is fixedly connected with a lower liquid storage plate, the top of lower liquid storage plate is provided with down the shower nozzle, the air outlet has been seted up to one side of spraying the case, the surface of air outlet is provided with the outlet duct, the one end fixedly connected with spray column that sprays the case is kept away from to the outlet duct, spray column's inside is provided with the heating pipe, the quantity of heating pipe is a plurality of.

Preferably, one side fixedly connected with intake pipe that the case kept away from the outlet duct sprays, the one end fixedly connected with draught fan that the case sprayed is kept away from to the intake pipe.

Preferably, one side of the spray tower is fixedly connected with a third water pump, the output end of the third water pump is fixedly connected with a spray pipe, and the input end of the third water pump is fixedly connected with a liquid inlet pipe.

Preferably, the outer surface of the spray pipe is provided with a plurality of water spray heads.

Preferably, the top of the spray tower is fixedly connected with an L-shaped pipe, and one end of the L-shaped pipe, which is far away from the spray tower, is fixedly connected with a filter box.

Preferably, the inside of rose box is provided with active carbon, the gas vent has been seted up to one side of rose box.

Compared with the prior art, the utility model provides a boiler tail gas SOx/NOx control sectional type spray column device possesses following beneficial effect:

1. the utility model discloses, through the cooperation use of spray tank, first water pump, liquid suction pipe, the fluid-discharge tube, go up the stock solution board, go up the shower nozzle, the bin, the second water pump, the connecting pipe, the water pipe, lower stock solution board, lower shower nozzle, the outlet duct, the spray column, the heating pipe, tail gas passes through the inside of spray tank earlier, when first water pump starts, liquid suction pipe can carry alkali lye to the inside of last stock solution board through the fluid-discharge tube, little in the pressure effect of first water pump, alkali lye is spouted from last shower nozzle, the acid gas in spun alkali lye and tail gas fully mixes, alkali lye gathers in the inside of bin through the hole that leaks in the spray tank bottom, then when second water pump work, can spout the alkali lye inside of bin again, consequently, can rationally utilize harmful gas in the alkali lye absorption tail gas, avoid alkali lye to utilize the problem of the not repeated extravagant alkali lye of alkali lye, harmful gas through the inside of spray tank enters into the inside of spray column through the outlet duct and carries out the secondary absorption, the inside of spray column can spray alkali lye, dispose corresponding alkali lye to harmful gas's composition, the heating pipe adopts the mode of electrical heating simultaneously, make the inside temperature of spray column rise, consequently harmful gas in the absorption tail gas that this device can be abundant, avoid causing the influence to the environment, and this device adopts the method of sectional type processing harmful gas, according to harmful gas's composition and content, can rationally dispose corresponding alkali lye, and take up an area of the space less, the staff of being convenient for overhauls this device, perhaps installs internals.

2. The utility model discloses, through the third water pump, the shower, the feed liquor pipe, the water shower nozzle, the L venturi tube, the rose box, activated carbon, the cooperation of gas vent is used, when starting the third water pump, can pass through the shower blowout with alkali lye, alkali lye blowout speed is very fast, the back takes place to strike with the inner wall of spray column in spun alkali lye, make alkali lye more dispersed, and even distribution is in the inside of spray column, the inhomogeneous problem of alkali lye distribution has been avoided, thereby fully absorb the harmful gas in the tail gas, harmful gas finally enters into the inside of rose box through the L venturi tube, dust and harmful gas in the tail gas can be filtered to the activated carbon, avoid the dust to scatter in the air.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged schematic view of the structure of FIG. 1;

FIG. 3 is a schematic structural view of the spraying box of the present invention;

fig. 4 is a schematic structural view of the spray tower of the present invention;

fig. 5 is a schematic structural view of the filter box of the present invention.

In the figure: 1. a spray box; 2. a first water pump; 3. a liquid pumping pipe; 4. a liquid discharge pipe; 5. an upper liquid storage plate; 6. an upper spray head; 7. a storage tank; 8. a second water pump; 9. a connecting pipe; 10. a water pipe; 11. a lower liquid storage plate; 12. a lower nozzle; 13. an air outlet pipe; 14. a spray tower; 15. heating a tube; 16. an air inlet pipe; 17. an induced draft fan; 18. a third water pump; 19. a shower pipe; 20. a liquid inlet pipe; 21. a water spray head; 22. an L-shaped tube; 23. a filter box; 24. activated carbon; 25. and (7) an exhaust port.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-5, a sectional spray tower device for desulfurization and denitrification of boiler tail gas comprises a spray box 1, an air inlet pipe 16 is fixedly connected to one side of the spray box 1 far from an air outlet pipe 13, an induced draft fan 17 is fixedly connected to one end of the air inlet pipe 16 far from the spray box 1, a first water pump 2 is fixedly connected to the top of the spray box 1, an extraction pipe 3 is fixedly connected to one side of the first water pump 2, a first liquid storage barrel is connected to one end of the extraction pipe 3 far from the first water pump 2, alkali liquor is arranged in the first liquid storage barrel and can absorb harmful gas in the tail gas, a liquid discharge pipe 4 is fixedly connected to the bottom of the first water pump 2, the liquid discharge pipe 4 extends into the spray box 1, an upper liquid storage plate 5 is fixedly connected to the bottom end of the liquid discharge pipe 4, an upper spray head 6 is arranged at the bottom of the upper liquid storage plate 5, a storage box 7 is fixedly connected to the bottom of the spray box 1, and a water leakage hole is formed in the lower surface of the spray box 1, the bottom of the storage box 7 is fixedly connected with a second water pump 8, one side of the second water pump 8 is fixedly connected with a connecting pipe 9, the connecting pipe 9 extends to the inside of the storage box 7, the top of the second water pump 8 is fixedly connected with a water pipe 10, the water pipe 10 extends to the inside of the spray box 1, the top end of the water pipe 10 is fixedly connected with a lower liquid storage plate 11, the top of the lower liquid storage plate 11 is provided with a lower spray head 12, one side of the spray box 1 is provided with an air outlet, the outer surface of the air outlet is provided with an air outlet pipe 13, one end of the air outlet pipe 13 far away from the spray box 1 is fixedly connected with a spray tower 14, the top of the spray tower 14 is fixedly connected with an L-shaped pipe 22, one end of the L-shaped pipe 22 far away from the spray tower 14 is fixedly connected with a filter box 23, the inside of the filter box 23 is provided with activated carbon 24, one side of the filter box 23 is provided with an air outlet 25, when a third water pump 18 is started, alkali liquor can be sprayed out through the spray pipe 19, the alkali liquor spraying speed is high, after the sprayed alkali liquor collides with the inner wall of the spray tower 14, the alkali liquor is more dispersed and is uniformly distributed in the spray tower 14, the problem of uneven alkali liquor distribution is avoided, harmful gas in tail gas is fully absorbed, the harmful gas finally enters the filter box 23 through the L-shaped pipe 22, the activated carbon 24 can filter dust and harmful gas in the tail gas, the dust is prevented from being dispersed into the air, one side of the spray tower 14 is fixedly connected with the third water pump 18, the output end of the third water pump 18 is fixedly connected with the spray pipe 19, the outer surface of the spray pipe 19 is provided with a plurality of water spray heads 21, the number of the water spray heads 21 is several, the input end of the third water pump 18 is fixedly connected with the liquid inlet pipe 20, one end of the liquid inlet pipe 20 far away from the third water pump 18 is fixedly connected with the second liquid storage barrel, the inside of the second liquid storage barrel is provided with alkali liquor with different concentrations or different types from the first liquid storage barrel, can dispose corresponding alkali lye according to the composition or the content configuration of harmful gas in the tail gas, thereby absorb the harmful gas in the tail gas better, the inside of spray column 14 is provided with heating pipe 15, the quantity of heating pipe 15 is a plurality of, the tail gas passes through the inside of spray box 1 earlier, when first water pump 2 starts, liquid suction pipe 3 can carry alkali lye to the inside of the upper liquid storage plate 5 through fluid-discharge tube 4, the pressure effect is little at first water pump 2, alkali lye is spouted from upper shower nozzle 6, spun alkali lye and the acid gas in the tail gas intensive mixing, alkali lye passes through the hole that leaks in the bottom of spray box 1, the gathering is in the inside of storage box 7, when second water pump 8 works, can spout the alkali lye inside of storage box 7 again, therefore can rationally utilize the harmful gas in the alkali lye absorption tail gas, avoid utilizing the problem of not extravagant alkali lye repeatedly, the harmful gas through spray box 1 inside enters the inside of spray column 14 through outlet duct 13 and carries out the secondary absorption, the inside of spray column 14 can spray alkali lye, dispose corresponding alkali lye to harmful gas's composition, heating pipe 15 adopts the mode of electrical heating simultaneously, make the inside temperature of spray column 14 rise, consequently harmful gas in the absorption tail gas that this device can be abundant, avoid causing the influence to the environment, and this device adopts the method of sectional type processing harmful gas, according to harmful gas's composition and content, can rationally dispose corresponding alkali lye, and take up an area of the space less, the staff of being convenient for overhauls this device, perhaps installs internals.

In the utility model, the tail gas of the boiler enters the inside of the spray box 1 through the air inlet pipe 16 under the action of the draught fan 17, when the first water pump 2 is started, the liquid pumping pipe 3 can convey alkali liquor to the inside of the upper liquid storage plate 5 through the liquid discharge pipe 4, the pressure action of the first water pump 2 is small, the alkali liquor is sprayed out from the upper spray head 6, the sprayed alkali liquor is fully mixed with acid gas in the tail gas, the alkali liquor passes through the water leakage hole at the bottom of the spray box 1 and is gathered inside the storage box 7, then the second water pump 8 works to spray the alkali liquor inside the storage box 7 again, therefore, the alkali liquor can be reasonably utilized to absorb harmful gas in the tail gas, the problem that the alkali liquor is not repeatedly wasted by utilizing the alkali liquor is avoided, the harmful gas passing through the inside of the spray box 1 enters the inside of the spray tower 14 through the air outlet pipe 13 to carry out secondary absorption, the alkali liquor can be sprayed inside the spray tower 14, the corresponding alkali liquor is configured aiming at the components of the harmful gas, meanwhile, the heating pipe 15 adopts an electric heating mode to raise the temperature inside the spray tower 14, so that the device can fully absorb harmful gas in tail gas and avoid affecting the environment, and adopts a sectional type harmful gas treatment method, corresponding alkali liquor can be reasonably configured according to the components and content of the harmful gas, the occupied space is small, so that workers can conveniently overhaul and maintain the device, or internal parts are installed, when the third water pump 18 is started, the alkali liquor can be sprayed out through the spray pipe 19, the alkali liquor spraying speed is high, the alkali liquor is more dispersed and uniformly distributed inside the spray tower 14 after the sprayed alkali liquor collides with the inner wall of the spray tower 14, the problem of uneven alkali liquor distribution is avoided, so that the harmful gas in the tail gas is fully absorbed, and the harmful gas finally enters the inside the filter box 23 through the L-shaped pipe 22, the activated carbon 24 can filter dust and harmful gases in the tail gas and prevent the dust from being dispersed into the air.

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 sectional type spray tower device for desulfurization and denitrification of boiler tail gas comprises a spray box (1) and is characterized in that a first water pump (2) is fixedly connected to the top of the spray box (1), a liquid pumping pipe (3) is fixedly connected to one side of the first water pump (2), a liquid discharging pipe (4) is fixedly connected to the bottom of the first water pump (2), the liquid discharging pipe (4) extends to the inside of the spray box (1), an upper liquid storage plate (5) is fixedly connected to the bottom of the liquid discharging pipe (4), an upper spray head (6) is arranged at the bottom of the upper liquid storage plate (5), a storage box (7) is fixedly connected to the bottom of the spray box (1), a water leakage hole is formed in the lower surface of the spray box (1), a second water pump (8) is fixedly connected to the bottom of the storage box (7), a connecting pipe (9) is fixedly connected to one side of the second water pump (8), connecting pipe (9) extend to the inside of bin (7), top fixedly connected with water pipe (10) of second water pump (8), water pipe (10) extend to the inside of spraying case (1), liquid storage plate (11) under the top fixedly connected with of water pipe (10), the top of liquid storage plate (11) is provided with down shower nozzle (12) down, the air outlet has been seted up to one side of spraying case (1), the surface of air outlet is provided with outlet duct (13), the one end fixedly connected with spray column (14) of spraying case (1) are kept away from in outlet duct (13), the inside of spray column (14) is provided with heating pipe (15), the quantity of heating pipe (15) is a plurality of.

2. The sectional type spray tower device for desulfurization and denitrification of boiler tail gas according to claim 1, wherein an air inlet pipe (16) is fixedly connected to one side of the spray box (1) far away from the air outlet pipe (13), and an induced draft fan (17) is fixedly connected to one end of the air inlet pipe (16) far away from the spray box (1).

3. The sectional spray tower device for desulfurization and denitrification of boiler tail gas according to claim 1, wherein a third water pump (18) is fixedly connected to one side of the spray tower (14), a spray pipe (19) is fixedly connected to an output end of the third water pump (18), and a liquid inlet pipe (20) is fixedly connected to an input end of the third water pump (18).

4. The sectional spray tower device for desulfurization and denitrification of boiler tail gas according to claim 3, wherein the spray pipes (19) are provided with water spray heads (21) on the outer surface, and the number of the water spray heads (21) is several.

5. The sectional spray tower device for desulfurization and denitrification of boiler tail gas according to claim 1, wherein an L-shaped pipe (22) is fixedly connected to the top of the spray tower (14), and a filter box (23) is fixedly connected to one end, far away from the spray tower (14), of the L-shaped pipe (22).

6. The sectional type spray tower device for desulfurization and denitrification of boiler tail gas according to claim 5, wherein activated carbon (24) is arranged inside the filter box (23), and an exhaust port (25) is formed in one side of the filter box (23).