CN215027545U - Liquid-denitration low-temperature catalytic device - Google Patents

Abstract

The utility model relates to a liquid denitration low-temperature catalytic device, which comprises a spray component and a flue, wherein the spray component is provided with two groups, the spray component comprises a solvent box, a spray pump, a liquid inlet pipe, a plurality of spray pipes and a plurality of spray heads, the spray heads comprise a connector and a plurality of spray heads, the side surfaces and the bottom ends of the spray heads are respectively provided with a plurality of spray holes, the solvent box is provided with a stirring motor, the solvent box is internally provided with a stirring shaft, the stirring shaft is provided with a plurality of stirring blades, one side of the flue is provided with a recovery box and a plurality of transfusion pipes, the two groups of spray components can spray solutions with different components into the flue, the denitration effect is enhanced, the spray heads are provided with intensive spray holes, the spray area is increased, the spray speed is increased, and the stirring motor, the stirring shaft and the stirring blades can accelerate the mixing of the solutions, the recovery box can recover the liquid in the flue so that the liquid can be recycled.

Description

Liquid-denitration low-temperature catalytic device

Technical Field

The utility model relates to a sell technical field, specifically be liquid and sell low temperature catalytic unit.

Background

With the progress of science and technology, people pay more and more attention to environmental problems, in order to cause the flue gas discharged by a boiler to contain nitrogen oxide, coal used as fuel needs to be subjected to denitration treatment, the denitration treatment is divided into denitration before combustion, denitration during combustion and denitration after combustion, the denitration method of the flue gas belongs to denitration after combustion, and the denitration method comprises a wet method and a dry method, wherein the wet method denitration is to wash the flue gas by using a solution capable of reacting with nitrogen oxide, so that nitrogen oxide reacts with a compound in the solution, so as to remove the nitrogen oxide in the flue gas, the existing wet method denitration device is to spray a solvent by using a spray head, but the existing spray head can only spray in one direction, a part of the interior of a flue used for denitration is not sprayed, so that the nitrogen oxide in the flue gas is not completely removed, the denitration cannot be stopped during the use of the boiler, water and a solid compound or a corresponding high-concentration solvent need to be added into a container for storing the solvent, the dilution and dissolution are time-consuming, the concentration of the sprayed solvent may be very low or very high during the time, which may result in waste or incomplete denitration, the used water may contain impurities, the influence of the impurities on the spray header is very serious, which may result in the blockage of the spray header, and the solution sprayed into the flue still contains a small amount of the compound for denitration, which can realize denitration, but the existing denitration equipment has no capability of recycling the part of the solution.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

To the deficiency of the prior art, the utility model provides a liquid takes off a round pin low temperature catalytic unit.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: liquid takes off a round pin low temperature catalytic unit, including spray set and flue, spray set is provided with two sets ofly, spray set includes solvent case, spray pump, feed liquor pipe, a plurality of shower and a plurality of shower, the one end of feed liquor pipe and the feed liquor end of spray pump are connected, and the other end is provided with the filter tube, the one end of filter tube has set gradually filter layer and first non-woven fabrics layer from inside to outside, the one end of shower is connected with the play liquid end of spray pump, and the other end and shower are connected, the shower sets up in the flue, the shower includes connector and a plurality of sprinkler head, the inside cavity of sprinkler head and connector sets up, and the inside intercommunication setting of sprinkler head and connector, the side and the bottom of sprinkler head all are provided with a plurality of orifice, be provided with agitator motor on the solvent case, be provided with the (mixing) shaft in the solvent case, be provided with a plurality of stirring vane on the (mixing) shaft, the top of (mixing) shaft is passed solvent case and agitator motor and is connected, be provided with zone of heating and thermal-insulated chamber from inside to outside on the lateral wall of solvent case, be provided with heating coil in the zone of heating, the upper and lower both ends of solvent case side all are provided with the water pipe, water pipe and zone of heating intercommunication set up, one side of flue is provided with collection box, a plurality of transfer line, the feed liquor end of collection box and the bottom of flue are passed through the transfer line intercommunication and are connected, the play liquid end of collection box passes through the transfer line and the shower head is connected, all be provided with the transfer pump on the transfer line that collection box goes out liquid end and feed liquor and hold, be provided with the filter vat in the collection box.

Preferably, the inner wall of the filter vat is provided with a second non-woven fabric layer.

In a further preferred mode, a box cover is arranged at the top end of the recovery box, the box cover is in threaded connection with the recovery box, a partition plate is arranged in the recovery box, and the top end of the filter barrel penetrates through the partition plate and is connected with the partition plate through a bolt.

In a further preferred mode, a hollow pipe is arranged inside the solvent box, and a water inlet pipe inside the solvent box is arranged in the hollow pipe.

In further preferred, the bottom of flue sets up to the V-arrangement, the bottom of flue is provided with interim liquid reserve tank, interim liquid reserve tank and flue intercommunication set up, interim liquid reserve tank passes through the transfer line and the setting of collection box intercommunication.

In a further preferred embodiment, the filter tube is funnel-shaped.

In further preferred, the liquid inlet end and the liquid outlet end of the recycling box are both provided with a first valve, and the water pipe is provided with a second valve.

In a further preferred mode, a water outlet is arranged at the bottom end of the temporary liquid storage tank, and a third valve is arranged at the water outlet.

(III) advantageous effects

Compared with the prior art, the utility model provides a liquid takes off a round pin low temperature catalytic unit possesses following beneficial effect:

in the utility model, the denitration solution in the solvent box is pumped out through the spray pump and the liquid inlet pipe and is sprayed into the flue through the spray pipe and the spray header, two solvent boxes can contain different solvents, the spray header is provided with a plurality of spray headers with intensive spray orifices, the spray orifices are smaller, liquid drops sprayed through the spray orifices can be very small, the spray orifices with different directions can spray the denitration solution to different directions, the denitration solution can fill the flue as far as possible, the spray speed can be increased through the spray orifices, the spraying speed is accelerated, through the stirring motor, the stirring shaft and the stirring blade, when water and compounds are added into the solvent box, the liquid in the solvent box can be stirred, the solution can flow rapidly, the compounds can be rapidly dissolved in the water, the water is injected into the heating layer through the water pipe, the water is heated through the heating pipe in the heating chamber, the water-bath heating can make solution heating in the solvent case, and can avoid the inner wall of solvent case overheated, heat the solution in the solvent case, make it keep a higher temperature, avoid because the solution temperature is low excessively, lead to oxynitrides in the flue gas not to fully react with the compound in the solution, through the collection box, the suitable transfer line of transfer pump can be with the liquid recovery in the flue, spout by the shower head again, reuse many times, through filter layer and the non-woven fabrics layer on filter tube and the filter tube, can effectively filter the impurity in the aquatic, avoid impurity to block up the orifice.

Drawings

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

FIG. 2 is a schematic view of the cross-sectional structure of the solvent tank, the spray pump and the stirring motor of the present invention;

FIG. 3 is a schematic sectional view of the recycling bin and a portion of the infusion tube of the present invention;

FIG. 4 is a schematic structural view of the showerhead of the present invention;

fig. 5 is a schematic view of the cross-sectional structure of the middle filtering pipe of the present invention.

In the figure: 1. a flue; 2. a solvent tank; 3. a spray pump; 4. a liquid inlet pipe; 5. a shower pipe; 6. a shower head; 61. a connector; 62. a sprinkler head; 63. spraying a hole; 7. a filter tube; 8. a filter layer; 9. a first nonwoven layer; 10. a stirring motor; 11. a stirring shaft; 12. a stirring blade; 13. a heating layer; 14. a thermally insulating cavity; 15. a heating coil; 16. a water pipe; 17. a recycling bin; 18. a transfusion tube; 19. an infusion pump; 20. a filter vat; 21. a second nonwoven layer; 22. a box cover; 23. a partition plate; 24. a hollow pipe; 25. a temporary liquid storage tank; 26. a first valve; 27. a second valve; 28. a water discharge outlet; 29. a third valve.

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.

Example (b):

referring to fig. 1-5, the liquid denitration low-temperature catalytic device comprises a spraying assembly and a flue 1, the spraying assembly is provided with two groups, the spraying assembly comprises a solvent tank 2, a spraying pump 3, a liquid inlet pipe 4, a plurality of spraying pipes 5 and a plurality of spraying heads 6, one end of the liquid inlet pipe 4 is connected with the liquid inlet end of the spraying pump 3, the other end of the liquid inlet pipe is provided with a filtering pipe 7, one end of the filtering pipe 7 is sequentially provided with a filtering layer 8 and a first non-woven fabric layer 9 from inside to outside, one end of the spraying pipe 5 is connected with the liquid outlet end of the spraying pump 3, the other end of the spraying pipe is connected with the spraying heads 6, the spraying heads 6 are arranged in the flue 1, the spraying heads 6 comprise a connector 61 and a plurality of spraying heads 62, the spraying heads 62 and the connector 61 are arranged in a hollow manner, the interiors of the spraying heads 62 and the interior of the connector 61 are communicated, the side surfaces and the bottom ends of the spraying heads 62 are provided with a plurality of spraying holes 63, be provided with agitator motor 10 on solvent case 2, be provided with (mixing) shaft 11 in the solvent case 2, be provided with a plurality of stirring vane 12 on the (mixing) shaft 11, solvent case 2 and agitator motor 10 are passed on the top of (mixing) shaft 11 and are connected, be provided with zone of heating 13 and thermal-insulated chamber 14 from inside to outside on the lateral wall of solvent case 2, be provided with heating coil 15 in the zone of heating 13, the upper and lower both ends of solvent case 2 side all are provided with water pipe 16, water pipe 16 and zone of heating 13 intercommunication set up, one side of flue 1 is provided with collection box 17, a plurality of transfer line 18, the feed liquor end of collection box 17 and the bottom of flue 1 are passed through transfer line 18 intercommunication and are connected, the play liquid end of collection box 17 passes through transfer line 18 and shower head 6 connects, all be provided with transfer pump 19 on the transfer line 18 that collection box 17 goes out liquid end and the feed liquor end, a filter vat 20 is provided in the recovery tank 17.

In this embodiment, the inner wall of the filtering barrel 20 is provided with a second non-woven fabric layer 21. The second nonwoven fabric layer 21 having a plurality of layers can improve the filtering effect of the solution entering the recovery tank 17.

In this embodiment, a cover 22 is disposed on the top end of the recycling bin 17, the cover 22 is screwed to the recycling bin 17, a partition 23 is disposed in the recycling bin 17, and the top end of the filter vat 20 passes through the partition 23 and is connected to the partition 23 by bolts. The cover 22 can be opened to facilitate cleaning the filter vat 20, and the filter vat 20 is connected with the partition 23 by bolts to facilitate the disassembly of the filter vat 20.

In the present embodiment, a hollow pipe 24 is disposed inside the solvent tank 2, and the water inlet pipe 16 inside the solvent tank 2 is disposed in the hollow pipe 24. The hollow pipe 24 can protect the filter pipe 7 and the liquid inlet pipe 4, but can not block the flow of the solution.

In this embodiment, the bottom of flue 1 sets up to the V-arrangement, the bottom of flue 1 is provided with interim liquid reserve tank 25, interim liquid reserve tank 25 and flue 1 intercommunication setting, interim liquid reserve tank 25 passes through transfer line 18 and collection box 17 intercommunication setting. The temporary liquid storage tank 25 can store the solution in the flue 1 in a large amount, and the solution in the flue 1 is prevented from flowing into other places in the flue 1.

In the present embodiment, the filter tube 7 is provided in a funnel shape. The funnel-shaped filter pipe 7 can increase the filtering area and accelerate the solution pumping speed of the liquid inlet pipe 4.

In this embodiment, the inlet end and the outlet end of the recycling tank 17 are both provided with a first valve 26, and the water pipe 16 is provided with a second valve 27. The first valve 26 and the second valve 27 are capable of controlling the flow of the solution.

In this embodiment, the bottom end of the temporary reservoir 25 is provided with a water outlet 28, and the water outlet 28 is provided with a third valve 29. The drain 28 may drain excess solution from the temporary reservoir 25 to prevent the solution from overflowing the temporary reservoir 25.

The working principle is as follows:

in summary, when in use, the solvent tank 2 is preferably provided with a water inlet and a compound feeding port, water and a compound are firstly added into the solvent tank 2 through the water inlet and the compound feeding port, the second valve 27 on the water pipe 16 with a relatively high position is opened, water is injected into the heating layer 13, the compound added into the solvent tank 2 is preferably sodium chlorate, sodium chlorite and sodium hydroxide, or ammonium persulfate, when the water and the compound are added, the stirring motor 10 is started, the stirring shaft 11 is driven by the stirring motor 10 to rotate, the stirring blades 12 on the stirring shaft 11 are rotated and drive the liquid to rotate, so that the compound is rapidly dissolved, after a period of time, the stirring motor 10 stops running, the heating coil 15 is electrified to heat the water in the heating layer 13, the heated water heats the solution in the solvent tank 2, the water bath heating can be uniformly heated, and the heat insulation cavity 14 can keep warm, when the temperature of the solution in the solvent tank 2 is higher, the preparation work is completed, when smoke starts to exist in the flue 1, the spray pump 3 is started, the liquid in the solvent tank 2 is pumped out through the liquid inlet pipe 4, when the liquid inlet pipe 4 pumps the solution, the solution is firstly filtered through the first non-woven fabric layer 9 and the filter layer 8 on the filter pipe 7, impurities in the solution are filtered out, the solution is conveyed into the spray head 6 in the flue 1 through the spray pipe 5, the solution is sprayed out from the spray head 6, the solution firstly enters the connector 61 and then enters the spray head 62 and is sprayed out through the spray holes 63, the spray direction of the spray head 6 comprises the direction and the periphery of the spray head 6, the liquid drops are distributed in the flue 1 as far as possible, the spray head 6 continuously sprays the solution, the solution can enter the temporary liquid storage tank 25 at the bottommost end of the flue 1, the first valve 26 at the liquid inlet end of the recovery tank 17 is opened, simultaneously starting a liquid conveying pump 19 connected with the liquid inlet end of the recovery tank 17, conveying the solution in the temporary liquid storage tank 25 into the recovery tank 17, closing the started liquid conveying pump 19 after the conveying is finished, closing the opened first valve 26, filtering the solution through a filter barrel 20 and a second non-woven fabric layer 21 on the filter barrel 20 to filter out dust stained in the solution, starting the liquid conveying pump 19 at the liquid outlet end of the recovery tank 17, simultaneously opening the valve at the liquid outlet end, pumping the filtered solution in the recovery tank 17 away by the liquid conveying pump 19, conveying the solution into a spray head 6 in a flue 1 through a liquid conveying pipe 18, re-spraying the solution into the flue 1 to increase the utilization rate of compounds in the solution, opening a third valve 29 when the solution in the temporary liquid storage tank 25 is conveyed into the recovery tank 17 and when the solution in the recovery tank 17 is enough, discharging a part of the solution in the temporary liquid storage tank 25 through a water discharge port 28, when the recycling bin 17 is cleaned, the bin cover 22 is opened, and then the second nonwoven fabric layer 21 is taken out and replaced with a new second nonwoven fabric layer 21.

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 (8)

1. Liquid takes off a round pin low temperature catalytic unit, including spray assembly and flue (1), its characterized in that: the spraying assembly is provided with two groups, the spraying assembly comprises a solvent box (2), a spraying pump (3), a liquid inlet pipe (4), a plurality of spraying pipes (5) and a plurality of spraying heads (6), one end of the liquid inlet pipe (4) is connected with the liquid inlet end of the spraying pump (3), the other end of the liquid inlet pipe is provided with a filtering pipe (7), one end of the filtering pipe (7) is sequentially provided with a filtering layer (8) and a first non-woven fabric layer (9) from inside to outside, one end of the spraying pipe (5) is connected with the liquid outlet end of the spraying pump (3), the other end of the spraying pipe is connected with the spraying heads (6), the spraying heads (6) are arranged in a flue (1), the spraying heads (6) comprise a connector (61) and a plurality of spraying heads (62), the spraying heads (62) and the connector (61) are arranged in a hollow mode, and the inside of the spraying heads (62) is communicated with the connector (61) in a communicated mode, the side and the bottom of sprinkler head (62) all are provided with a plurality of spray orifices (63), be provided with agitator motor (10) on solvent case (2), be provided with (mixing) shaft (11) in solvent case (2), be provided with a plurality of stirring vane (12) on (mixing) shaft (11), solvent case (2) and agitator motor (10) are passed on the top of (mixing) shaft (11) and are connected, be provided with zone of heating (13) and thermal-insulated chamber (14) from inside to outside on the lateral wall of solvent case (2), be provided with heating coil (15) in zone of heating (13), both ends about solvent case (2) side all are provided with water pipe (16), water pipe (16) and zone of heating (13) intercommunication set up, one side of flue (1) is provided with collection box (17), a plurality of (18), the inlet port of collection box (17) and the bottom of flue (1) pass through transfer line (18) intercommunication connection, the liquid outlet end of the recycling box (17) is connected with the spray header (6) through a liquid conveying pipe (18), liquid conveying pipes (19) are arranged on the liquid outlet end of the recycling box (17) and the liquid inlet end of the liquid conveying pipe (18), and a filter barrel (20) is arranged in the recycling box (17).

2. The liquid denitration low-temperature catalytic device according to claim 1, characterized in that: and a second non-woven fabric layer (21) is arranged on the inner wall of the filter barrel (20).

3. The liquid denitration low-temperature catalytic device according to claim 1, characterized in that: the top on collection box (17) is provided with case lid (22), case lid (22) and collection box (17) threaded connection, be provided with baffle (23) in collection box (17), baffle (23) are passed on the top of filter vat (20), and pass through bolted connection with baffle (23).

4. The liquid denitration low-temperature catalytic device according to claim 1, characterized in that: the inside of solvent case (2) is provided with fretwork pipe (24), inlet tube (16) inside solvent case (2) set up in fretwork pipe (24).

5. The liquid denitration low-temperature catalytic device according to claim 1, characterized in that: the bottom of flue (1) sets up to the V-arrangement, the bottom of flue (1) is provided with interim liquid reserve tank (25), interim liquid reserve tank (25) and flue (1) intercommunication set up, interim liquid reserve tank (25) are through transfer line (18) and collection box (17) intercommunication setting.

6. The liquid denitration low-temperature catalytic device according to claim 1, characterized in that: the filter pipe (7) is arranged in a funnel shape.

7. The liquid denitration low-temperature catalytic device according to claim 1, characterized in that: the liquid inlet end and the liquid outlet end of the recovery box (17) are both provided with a first valve (26), and a second valve (27) is arranged on the water pipe (16).

8. The liquid denitration low-temperature catalysis device as claimed in claim 5, wherein: a water outlet (28) is arranged at the bottom end of the temporary liquid storage tank (25), and a third valve (29) is arranged at the water outlet (28).

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