CN216856261U

CN216856261U - Continuous denitration device

Info

Publication number: CN216856261U
Application number: CN202123082022.1U
Authority: CN
Inventors: 毕立强
Original assignee: Shandong Ruixiang Environmental Protection Technology Co ltd
Current assignee: Shandong Ruixiang Environmental Protection Technology Co ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-07-01
Anticipated expiration: 2031-12-09

Abstract

The utility model relates to a continuous denitration device, which comprises a spray tower, wherein a plurality of filter plates are arranged at the upper part of the spray tower, a rotating shaft is rotatably arranged in the middle of each filter plate, a first airflow driving device connected with an air inlet pipe is arranged at the lower end of each rotating shaft, a spray pipe is fixed on each rotating shaft above each filter plate, a first rotating joint communicated with a spray head is fixed at the top of each rotating shaft, a first rotating joint is connected with a liquid conveying pipe, a circulating pump is arranged on the liquid conveying pipe, a liquid discharge pipe is connected at the lower end of the liquid conveying pipe, a filter is arranged on the liquid conveying pipe, an inlet of the circulating pump is connected with a liquid suction pipe, the liquid suction pipe is connected with a liquid storage tank, and a flow valve is arranged on the liquid suction pipe. According to the denitration agent treatment device, the liquid extracting pipe and the liquid storage tank are connected at the inlet of the circulating pump, and the amount of the denitration agent which is fed into the spray tower can be adjusted through the flow valve on the liquid extracting pipe, so that the concentration of the denitration agent in the spray tower is ensured, the denitration effect is not influenced due to too low concentration, and the flue gas treatment speed and efficiency are not influenced due to the shutdown of the denitration agent replacement.

Description

Continuous denitration device

Technical Field

The utility model relates to a continuous denitration device, and belongs to the technical field of denitration.

Background

When a boiler or a kiln is combusted, some flue gas is generated, and the flue gas is directly discharged into air to pollute the environment, so that the flue gas needs to be subjected to denitration treatment, wherein the denitration treatment includes dry denitration and wet denitration, and the wet denitration is to purify coal-fired flue gas by using the principle that a denitration agent dissolves NOx.

Current denitration device lets in the spray column through the fan to the flue gas in, then sprays the denitrifier through the shower head of top and takes off the round pin, in order to make denitrifier cyclic utilization, generally can utilize the circulating pump to utilize the denitrifier of bottom to spray the shower head circulation blowout, but uses a period of time after, the concentration of denitrifier will receive the influence, consequently need shut down and change new denitrifier, can influence flue gas treatment speed and efficiency like this.

SUMMERY OF THE UTILITY MODEL

The utility model provides a continuous denitration device, which solves the problem that the concentration of a denitration agent is influenced after the denitration agent is used for a period of time in the prior denitration process, so that the denitration agent needs to be stopped to be replaced by a new denitration agent, and the flue gas treatment speed and efficiency are influenced.

The utility model relates to a continuous denitration device, which comprises a spray tower, wherein the top of the spray tower is provided with an air outlet, the bottom of the spray tower is provided with a liquid discharge pipe, the lower part of the spray tower is connected with an air inlet pipe, the air inlet pipe is provided with a fan, the upper part of the spray tower is provided with a plurality of filter plates, the middle of each filter plate is rotatably provided with a rotating shaft, the lower end of each rotating shaft is provided with a first airflow driving device connected with the air inlet pipe, a vortex-shaped air distribution pipe communicated with the air inlet pipe is fixed on the rotating shaft below each filter plate, the top of each air distribution pipe is uniformly provided with a plurality of air injection holes, the rotating shaft above each filter plate is fixedly provided with a spray pipe, the bottom of each spray pipe is fixedly provided with a plurality of spray heads, the top of each rotating shaft is fixedly provided with a first rotating joint communicated with the spray heads, the first rotating joint is connected with a liquid delivery pipe, the liquid delivery pipe is provided with a circulating pump, the lower end of the liquid discharge pipe is provided with a filter, the inlet of the circulating pump is connected with a liquid suction pipe, the liquid suction pipe is connected with a liquid storage tank and is provided with a flow valve. The lower end of the liquid discharge pipe is provided with a valve.

Preferably, the first air flow driving device comprises a first hollow disc fixed at the lower end of the rotating shaft, a first flow guide pipe is uniformly arranged on the outer side of the first hollow disc, a first flow limiting pipe is arranged at the outer end of the first flow guide pipe, a second rotary joint is fixed at the bottom of the rotating shaft, and the lower end of the second rotary joint is fixedly connected with the air inlet pipe. The air inlet of the air inlet pipe can be conveniently sprayed out from the first flow limiting pipe, and the first flow guiding pipe and the rotating shaft are driven to rotate by the reacting force of the sprayed air.

Preferably, the other end of the air inlet pipe is connected with a cyclone dust collector. The cyclone dust collector can also use a filter bag dust collector, can remove dust in the flue gas and prevent the blockage of the air injection holes.

Preferably, be equipped with air current drive arrangement two in the liquid reserve tank, air current drive arrangement two is including fixing the support column in the middle of the liquid reserve tank bottom, and support column upper portion is rotated and is installed hollow dish two, and the outside of hollow dish two evenly is equipped with honeycomb duct two, and the outer end of honeycomb duct two is equipped with current-limiting tube two, and the top of support column is fixed with the back flow, and the lower part of liquid reserve tank is connected to the other end of back flow, is equipped with the drawing liquid pump on the back flow. Can draw lower part liquid through the drawing liquid pump and then spout from two restrictors, drive two honeycomb ducts and hollow dish and rotate round the support column, stir the denitrifier, prevent to deposit.

Preferably, a reinforcing rod is fixed between the adjacent pipelines of the air distribution pipe. And is more stable.

Preferably, the filter includes and is fixed with rotary joint three with the transfer line lower extreme, rotary joint three's top is fixed with the lower cover, the inboard threaded connection in top of lower cover has a section of thick bamboo, the top threaded connection who strains a section of thick bamboo has the upper cover, be fixed with the flexible pipe of ripple in the middle of the top of upper cover, the flexible tub of top connection of ripple has the suction tube, the fluid-discharge tube is connected to the suction tube, be equipped with filter screen and support ring in straining a section of thick bamboo, the support ring is in the filter screen below, the both sides of filter screen and the below of support ring are equipped with the spacer, the filter screen is middle epirelief formula arc design, the centre of support ring is fixed with the support net, the top of support ring is equipped with the annular groove that supplies the filtration membrane outward flange to stretch into, be equipped with the clamp ring in the annular groove, the top and the bottom of straining a section of thick bamboo respectively with between upper cover and the lower cover and the sealing washer. The filter can be conveniently disassembled for cleaning and replacement.

The utility model has the following beneficial effects:

through connecting liquid suction pipe and liquid reserve tank in the import department at the circulating pump, can adjust the volume of the denitration agent of mending in the spray column through flow valve on the liquid suction pipe to guarantee the concentration of denitration agent in the spray column, need not cross the low effect and sell the effect of taking off because of concentration, and need not shut down because changing the denitration agent, influence flue gas treatment speed and efficiency.

Drawings

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

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

FIG. 3 is an enlarged view of the structure at B in FIG. 1;

FIG. 4 is a schematic view of the reservoir;

FIG. 5 is a schematic view of the structure of the gas distribution pipe;

FIG. 6 is a schematic top view of the first airflow driving device;

FIG. 7 is a schematic top view of the second airflow driving device;

in the figure: 1. a spray tower; 2. a demister; 3. a transfusion tube; 4. a first rotary joint; 5. a shower head; 6. filtering the plate; 7. a shower pipe; 8. a rotating shaft; 9. an air distribution pipe; 10. the device comprises a circulating pump 11, a first flow guide pipe 12, a second flow guide pipe 13, a liquid injection port 14, a hollow disc 15, a second flow limiting pipe 16, a return pipe 17, a liquid pumping pump 18, a support column 19, a liquid storage tank 20, a liquid pumping pipe 21, a flow valve 22, a corrugated expansion pipe 23, a suction pipe 24, a liquid discharge pipe 25, a fan 26, an air injection hole 27, an air inlet pipe 28, a cyclone dust collector 29, a rotary joint III and 30, a lower cover 31, a filter cartridge 32, a support ring 33, a spacer bush 34, a filter screen 35, an upper cover 36, a pressing ring 37, a filter membrane 38, a support net 39, a rotary joint II, 40, a first flow limiting pipe 41, a hollow disc I and 42 and a reinforcing rod.

Detailed Description

The present invention will be further described with reference to the following examples.

As shown in fig. 1 to 7, the continuous denitration device of the present invention includes a spray tower 1, wherein the top of the spray tower 1 is provided with an air outlet, the bottom of the spray tower 1 is provided with a liquid discharge pipe 24, the lower part of the spray tower 1 is connected with an air inlet pipe 27, the air inlet pipe 27 is provided with a fan 25, the upper part of the spray tower 1 is provided with a plurality of filter plates 6, and the continuous denitration device is characterized in that: the middle of filter plate 6 is rotated and is installed pivot 8, the lower extreme of pivot 8 is equipped with the air current drive arrangement one of connection intake pipe 27, be fixed with the cloth trachea 9 of the vortex form of intercommunication intake pipe 27 on the pivot 8 of filter plate 6 below, the top of cloth trachea 9 evenly is equipped with a plurality of fumaroles 26, be fixed with shower 7 on the pivot 8 of every filter plate 6 top, the bottom of shower 7 is fixed with a plurality of shower heads 5, the top of pivot 8 is fixed with a swivel joint 4 of intercommunication shower head 5, swivel joint 4 is connected with transfer line 3, be equipped with circulating pump 10 on the transfer line 3, fluid-discharge tube 24 is connected to the lower extreme of transfer line 3, be equipped with the filter on the transfer line 3, the access connection of circulating pump 10 has liquid suction pipe 20, liquid suction pipe 20 is connected with liquid reserve tank 19, be equipped with flow valve 21 on the liquid suction pipe 20.

The first air flow driving device comprises a first hollow disc 41 fixed at the lower end of the rotating shaft 8, a first flow guide pipe 11 is uniformly arranged on the outer side of the first hollow disc 41, a first flow limiting pipe 40 is arranged at the outer end of the first flow guide pipe 11, a second rotary joint 39 is fixed at the bottom of the rotating shaft 8, and the lower end of the second rotary joint 39 is fixedly connected with the air inlet pipe 27.

The other end of the inlet pipe 27 is connected to a cyclone 28.

Be equipped with air current drive arrangement two in the liquid reserve tank 19, air current drive arrangement two is including fixing the support column 18 in the middle of the liquid reserve tank 19 bottom, and support column 18 upper portion is rotated and is installed hollow dish two 14, and the outside of hollow dish two 14 evenly is equipped with honeycomb duct two 12, and the outer end of honeycomb duct two 12 is equipped with current-limiting tube two 15, and the top of support column 18 is fixed with back flow 16, and the lower part of liquid reserve tank 19 is connected to the other end of back flow 16, is equipped with drawing liquid pump 17 on the back flow 16. The middle of the top of the liquid storage tank 19 is provided with a liquid injection port 13.

A reinforcing rod 42 is fixed between the adjacent pipelines of the gas distribution pipe 9.

The filter comprises a rotary joint III 29 fixed at the lower end of the infusion tube 3, a lower cover 30 is fixed at the top of the rotary joint III 29, a filter cylinder 31 is in threaded connection with the inner side of the top of the lower cover 30, an upper cover 35 is in threaded connection with the top of the filter cylinder 31, a corrugated expansion tube 22 is fixed in the middle of the top of the upper cover 35, a suction tube 23 is connected to the top of the corrugated expansion tube 22, a valve is arranged on the suction tube 23, the suction tube 23 is connected with a liquid discharge tube 24, a filter screen 34 and a support ring 32 are arranged in the filter cylinder 31, the support ring 32 is located below the filter screen 34, two sides of the filter screen 34 and the support ring 32 are provided with a spacer sleeve 33, the filter screen 34 is in a middle convex arc design, a support net 38 is fixed in the middle of the support ring 32, a filter membrane 37 is arranged above the support net 38, an annular groove for the outer edge of the filter membrane 37 to extend into is arranged on the outer side of the top of the support ring 32, a compression ring 36 is arranged in the annular groove, and sealing rings are respectively arranged between the top and the bottom of the filter cylinder 31 and the upper cover 35 and the lower cover 30. The top of the spray tower 1 is provided with a demister 2.

When the denitration device works, an initial denitration agent is injected from the liquid injection pipe of the spray tower 1, then a supplemented denitration agent is injected into the liquid storage tank 19 from the injection port 13, the valve of the liquid discharge pipe 24 is closed, the valve at the suction pipe 23 is opened, then the circulating pump 10 is started, the flow valve 21 is closed, the gas treated by the cyclone dust collector 28 is pumped into the hollow disc I41 and the gas distribution pipe 9 through the fan 25, the gas entering the hollow disc I41 is sprayed out from the flow limiting pipe I40, the rotating shaft 8 is driven to rotate, so that the gas sprayed out of the gas spraying holes 26 on the gas distribution pipe 9 can be uniformly sprayed out in a rotating mode, during the rising process of the sprayed gas, the circulating pump 10 extracts the denitration agent at the bottom of the spray tower 1 and then sprays out from the spray head 5 in a rotating mode to perform full contact reaction with the uniformly-entering gas, the gas is subjected to denitration, the denitration gas is discharged from the gas outlet, the flow valve 21 is opened after a period of time, and the gas is adjusted to a proper size, then the liquid pump 17 is started, the circulating pump 10 pumps a small amount of the denitration agent in the liquid storage tank 19 to enter the spray tower 1, the concentration of the denitration agent can be ensured, the liquid discharge pipe 24 is opened at regular time to discharge a certain amount of the denitration agent, and the liquid level of the denitration agent in the spray tower 1 is prevented from being too high.

When the filter needs to be cleaned, the valve of the suction pipe 23 can be closed, the circulating pump 10 is closed, then the filter cartridge 31 is grasped, the lower cover 30 is rotated, the lower part of the filter cartridge 31 is unscrewed, then the upper cover 35 is grasped, the filter cartridge 31 is rotated, the filter cartridge 31 is completely removed, then the filter screen 34 and the filter membrane 37 can be taken out for cleaning, and the filter can be installed back after cleaning.

In conclusion, the liquid extraction pipe and the liquid storage tank are connected at the inlet of the circulating pump, and the amount of the denitration agent supplemented into the spray tower can be adjusted through the flow valve on the liquid extraction pipe, so that the concentration of the denitration agent in the spray tower is ensured, the denitration effect is not influenced due to too low concentration, and the flue gas treatment speed and efficiency are not influenced due to the shutdown of replacing the denitration agent.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "up", "down", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are for convenience only to describe the present invention without requiring the present invention to be necessarily constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Claims

1. The utility model provides a continuity denitrification facility, includes spray column (1), and the top of spray column (1) is equipped with the gas outlet, and the bottom of spray column (1) is equipped with fluid-discharge tube (24), and the sub-unit connection of spray column (1) has intake pipe (27), and intake pipe (27) are equipped with fan (25), and spray column (1) upper portion is equipped with a plurality of filter plates (6), its characterized in that: a rotating shaft (8) is rotatably installed in the middle of the filter plate (6), the lower end of the rotating shaft (8) is provided with a first airflow driving device connected with an air inlet pipe (27), a vortex-shaped air distribution pipe (9) communicated with the air inlet pipe (27) is fixed on the rotating shaft (8) below the filter plate (6), a plurality of air injection holes (26) are uniformly formed in the top of the air distribution pipe (9), a spray pipe (7) is fixed on the rotating shaft (8) above each filter plate (6), a plurality of spray heads (5) are fixed at the bottom of each spray pipe (7), a first rotary joint (4) communicated with the spray heads (5) is fixed at the top of each rotating shaft (8), the first rotary joint (4) is connected with an infusion pipe (3), a circulating pump (10) is arranged on the infusion pipe (3), a liquid discharge pipe (24) is connected at the lower end of the infusion pipe (3), a filter is arranged on the infusion pipe (3), and the inlet of the circulating pump (10) is connected with a liquid suction pipe (20), the liquid extracting pipe (20) is connected with a liquid storage tank (19), and the liquid extracting pipe (20) is provided with a flow valve (21).

2. The continuous denitration apparatus according to claim 1, wherein: the first air flow driving device comprises a first hollow disc (41) fixed to the lower end of the rotating shaft (8), a first flow guide pipe (11) is uniformly arranged on the outer side of the first hollow disc (41), a first flow limiting pipe (40) is arranged at the outer end of the first flow guide pipe (11), a second rotary joint (39) is fixed to the bottom of the rotating shaft (8), and the lower end of the second rotary joint (39) is fixedly connected with the air inlet pipe (27).

3. The continuous denitration apparatus according to claim 2, wherein: the other end of the air inlet pipe (27) is connected with a cyclone dust collector (28).

4. The continuous denitration apparatus according to claim 3, wherein: be equipped with air current drive arrangement two in liquid reserve tank (19), air current drive arrangement two is including fixing support column (18) in the middle of liquid reserve tank (19) bottom, support column (18) upper portion is rotated and is installed hollow dish two (14), the outside of hollow dish two (14) evenly is equipped with honeycomb duct two (12), the outer end of honeycomb duct two (12) is equipped with current-limiting pipe two (15), the top of support column (18) is fixed with back flow pipe (16), the lower part of liquid reserve tank (19) is connected to the other end of back flow pipe (16), be equipped with drawing liquid pump (17) on back flow pipe (16).

5. The continuous denitration apparatus according to claim 4, wherein: a reinforcing rod (42) is fixed between the adjacent pipelines of the air distribution pipe (9).

6. The continuous denitration apparatus according to claim 5, wherein: the filter comprises a rotary joint III (29) fixed at the lower end of the infusion tube (3), a lower cover (30) is fixed at the top of the rotary joint III (29), a filter tube (31) is connected with the inner side of the top of the lower cover (30) through a thread, an upper cover (35) is connected with the top of the filter tube (31) through a thread, a corrugated expansion tube (22) is fixed in the middle of the top of the upper cover (35), the top of the corrugated expansion tube (22) is connected with a suction tube (23), the suction tube (23) is connected with a liquid discharge tube (24), a filter screen (34) and a support ring (32) are arranged in the filter tube (31), the support ring (32) is positioned below the filter screen (34), two sides of the filter screen (34) and the support ring (32) are provided with a spacer sleeve (33) below, the filter screen (34) is in a convex arc design in the middle, a support net (38) is fixed in the middle of the support ring (32), and a filter membrane (37) is arranged above the support net (38), the outside of the top of the support ring (32) is provided with an annular groove for the outer edge of the filter membrane (37) to extend into, a compression ring (36) is arranged in the annular groove, and sealing rings are arranged between the top and the bottom of the filter cylinder (31) and between the upper cover (35) and the lower cover (30) respectively.