CN214681046U - SCR desulphurization unit - Google Patents

Abstract

The utility model relates to a SCR desulphurization unit, relate to the field of SCR technique, it includes the blast pipe, set up air inlet and gas outlet on the blast pipe, establish the first material subassembly that spouts that is used for spouting the material to the blast pipe is inside on the blast pipe, establish the stirring subassembly that is used for stirring the flue gas on the blast pipe, the stirring subassembly is including establishing the first jet-propelled pipe on the blast pipe inner wall, establish the second jet-propelled pipe on the blast pipe inner wall and with the air pump of first jet-propelled pipe and the jet-propelled pipe intercommunication of second, first material subassembly that spouts is located the top of stirring subassembly, the lateral wall of blast pipe is all passed to first jet-propelled pipe and the jet-propelled pipe of second, the jet-propelled opposite direction of first jet-propelled pipe and second, the jet-propelled pipe of second is located the offside of first jet-propelled pipe, the air pump is located the outside of blast pipe. The application has the effect of making the flue gas mix with the desulfurization material better.

Description

SCR desulphurization unit

Technical Field

The application relates to the field of SCR technology, in particular to an SCR desulphurization device.

Background

The SCR technology is a technology for treating pollutants in flue gas, automobile exhaust gas, and the like generated by steel smelting, and mixes the flue gas, the automobile exhaust gas, and the like generated by steel smelting with a desulfurization material, and performs a catalytic reduction reaction, thereby removing the pollutants in the flue gas or the exhaust gas.

At present, in the SCR technology, flue gas generated by steel smelting needs to be mixed with a desulfurization material in a pipeline, the contact time of the flue gas flowing along the pipeline in the pipeline and the desulfurization material is short, and the flue gas can not be uniformly mixed with the desulfurization material when rising and flowing in the pipeline and passing through the desulfurization material.

SUMMERY OF THE UTILITY MODEL

In order to make the flue gas mix with the desulfurization material better, this application provides an SCR desulphurization unit.

The application provides a SCR desulphurization unit adopts following technical scheme:

an SCR desulphurization device comprises an exhaust pipe, an air inlet and an air outlet which are arranged on the exhaust pipe, a first material spraying component which is arranged on the exhaust pipe and used for spraying materials into the exhaust pipe, and a stirring component which is arranged on the exhaust pipe and used for stirring flue gas; the stirring assembly comprises a first gas injection pipe arranged on the inner wall of the exhaust pipe, a second gas injection pipe arranged on the inner wall of the exhaust pipe and a gas pump communicated with the first gas injection pipe and the second gas injection pipe; the first material subassembly that spouts is located the top of stirring subassembly, the lateral wall of blast pipe is all passed to first jet-propelled pipe and the jet-propelled pipe of second, the jet-propelled opposite direction of first jet-propelled pipe and the jet-propelled pipe of second, the jet-propelled pipe of second is located the offside of first jet-propelled pipe, the air pump is located the outside of blast pipe.

Through adopting above-mentioned technical scheme, untreated flue gas gets into the blast pipe from the air inlet of blast pipe, the flue gas upwards flows in the blast pipe, the air pump takes out the outside air and sends to in first jet-propelled pipe and the jet-propelled pipe of second, and spout from the mouth of pipe of the jet-propelled pipe of first jet-propelled pipe and second, the flow direction of flue gas is changed to the jet-propelled pipe spun air of first jet-propelled pipe and second, the flue gas takes place rotatoryly in the blast pipe, first spout the material subassembly and spout the desulfurization material in the blast pipe, the flue gas can mix more evenly at rotatory in-process and first spout material subassembly spun desulfurization material.

Optionally, the exhaust pipe is a round pipe.

Through adopting above-mentioned technical scheme, the air of first jet-propelled pipe and second jet-propelled pipe spun makes the flue gas take place to rotate, and the blast pipe is circular, and the flue gas flows more stably along the inner wall of blast pipe.

Optionally, the first material spraying assembly comprises a first material spraying pipe rotatably connected to the exhaust pipe and a plurality of second material spraying pipes arranged on the first material spraying pipe; the plurality of second spraying pipes are communicated with the first spraying pipe, the first spraying pipe penetrates through the side wall of the exhaust pipe, and the plurality of second spraying pipes are located inside the exhaust pipe.

Through adopting above-mentioned technical scheme, first spout material pipe and external desulfurization material intercommunication, external desulfurization material gets into first spout material pipe and spouts from the second in spouting the material pipe, and a plurality of seconds spout the material pipe and can make desulfurization material and flue gas mix better.

Optionally, the number of the first material spraying pipes is multiple; the first material spraying pipes are uniformly distributed along the cross section direction of the exhaust pipe.

Through adopting above-mentioned technical scheme, a plurality of first material pipes that spout are followed the cross section direction evenly distributed of blast pipe, and the material pipe blowout desulfurization material is spouted to the second on a plurality of first material pipes that spout, has increased the area of contact of desulfurization material with the flue gas, further makes desulfurization material and flue gas mix more evenly.

Optionally, a guide plate is arranged on the exhaust pipe; one end of the guide plate is fixedly connected to the exhaust pipe, the other end of the guide plate is a free end, and the free end of the guide plate is positioned in the exhaust pipe; the flow direction of the flue gas along the guide plate is consistent with the air injection direction of the first air injection pipe.

Through adopting above-mentioned technical scheme, the flue gas is changed the flow direction by the baffle after getting into from the air inlet of blast pipe, makes the flow direction of flue gas keep the unanimity as far as possible with the jet-propelled direction of first jet-propelled pipe to make the flue gas rotate better.

Optionally, the stirring assemblies are arranged in a plurality of numbers along the axial direction of the exhaust pipe, and the stirring assemblies are distributed at equal intervals along the axial direction of the exhaust pipe.

Through adopting above-mentioned technical scheme, a plurality of stirring subassemblies evenly distributed on the blast pipe, a plurality of stirring subassemblies stir the flue gas that rises to different positions, make the flue gas be difficult to weaken at the rotatory dynamics of the in-process that rises.

Optionally, the first material spraying pipe is provided with a material spraying hole; the material spraying holes are located on two sides of the second material spraying pipe.

Through adopting above-mentioned technical scheme, the desulfurization material is spout from spouting the material hole, has further increased the area of contact of desulfurization material and flue gas, further makes flue gas and desulfurization material mix better.

Optionally, a second spraying component is arranged on the exhaust pipe; the second spraying assembly comprises a third spraying pipe arranged on the exhaust pipe and a plurality of fourth spraying pipes arranged on the third spraying pipe; the number of the third material spraying pipes is multiple, and the third material spraying pipes are uniformly distributed along the cross section direction of the exhaust pipe; the second material spraying assembly is located above the first material spraying assembly, the third material spraying pipes and the first material spraying pipes are distributed in a staggered mode, and the fourth material spraying pipes face the first material spraying assembly.

Through adopting above-mentioned technical scheme, the material subassembly is spouted to the second supplyes the mixture to flue gas and desulfurization material, further makes flue gas and desulfurization material mix more evenly.

In summary, the present application includes at least one of the following beneficial technical effects:

1. untreated flue gas enters the exhaust pipe from an air inlet of the exhaust pipe, the flue gas flows upwards in the exhaust pipe, the air pump pumps outside air into the first air injection pipe and the second air injection pipe and sprays the outside air out of pipe orifices of the first air injection pipe and the second air injection pipe, the air sprayed by the first air injection pipe and the second air injection pipe changes the flow direction of the flue gas, the flue gas rotates in the exhaust pipe, the first spraying component sprays desulfurization materials into the exhaust pipe, and the flue gas can be more uniformly mixed with the desulfurization materials sprayed by the first spraying component in the rotating process;

2. a plurality of first material pipes that spout evenly distributed along the cross section direction of blast pipe, the second on a plurality of first material pipes that spout spouts the material desulfurization material, has increased the area of contact of desulfurization material and flue gas, further makes desulfurization material and flue gas mix more evenly.

Drawings

Fig. 1 is an isometric view of an SCR desulfurization device in an embodiment of the present application.

Fig. 2 is a sectional view of the SCR desulfurization device shown in fig. 1.

FIG. 3 is another cross-sectional view of the SCR desulfurization unit shown in FIG. 1.

Fig. 4 is an enlarged view of a portion a in fig. 3.

FIG. 5 is another cross-sectional view of the SCR desulfurization device shown in FIG. 1.

Description of reference numerals: 1. an exhaust pipe; 11. an air inlet; 12. an air outlet; 2. a first material spraying component; 21. a first material spraying pipe; 22. a second material spraying pipe; 23. a material spraying hole; 3. a stirring assembly; 31. a first gas lance; 32. a second gas lance; 33. an air pump; 4. a guide plate; 5. a second material spraying component; 51. a third material spraying pipe; 52. and a fourth material spraying pipe.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The embodiment of the application discloses SCR desulphurization unit.

Referring to fig. 1 and 2, an SCR desulfurization apparatus includes an exhaust pipe 1, a stirring assembly 3, and a first injection assembly 2. Air inlet 11 has been seted up to the bottom lateral wall of blast pipe 1, and the open-top of blast pipe 1 is gas outlet 12, and the flue gas that the smelting produced gets into blast pipe 1 from air inlet 11, and first material subassembly 2 that spouts the desulfurization material and make the flue gas mix with the desulfurization material in spouting blast pipe 1, and stirring subassembly 3 stirs the flue gas in blast pipe 1 and makes the flue gas take place rotatoryly, and rotatory flue gas can mix better with the desulfurization material.

Referring to fig. 2, the agitating assembly 3 includes a first air nozzle 31, a second air nozzle 32, and an air pump 33. First jet-propelled pipe 31 and the jet-propelled pipe 32 of second all fixed connection on blast pipe 1, and first jet-propelled pipe 31 and the jet-propelled pipe 32 of second all pass blast pipe 1, and first jet-propelled pipe 31 and the jet-propelled pipe 32 of second are about axis central symmetry, and first jet-propelled pipe 31 is located blast pipe 1 outer one end and the jet-propelled pipe 32 of second is located blast pipe 1 outer one end all and air pump 33 intercommunication. The air pump 33 pumps the outside air into the first air nozzle 31 and the second air nozzle 32, and the outside air is ejected from one end of the first air nozzle 31 and the second air nozzle 32 in the exhaust pipe 1, and the first air nozzle 31 and the second air nozzle 32 change the flow direction of the flue gas in the exhaust pipe 1, so that the flue gas rotates when rising in the exhaust pipe 1.

Referring to fig. 3 and 4, the first spray assembly 2 includes a first spray tube 21 and a plurality of second spray tubes 22. The first material spraying pipe 21 is fixedly connected to the exhaust pipe 1, one end of the first material spraying pipe 21 penetrates out of the exhaust pipe 1, and the other end of the first material spraying pipe 21 is fixedly connected to the inner wall of the exhaust pipe 1. The plurality of second material spraying pipes 22 are fixedly connected to the first material spraying pipe 21 and communicated with the first material spraying pipe 21, the plurality of second material spraying pipes 22 are distributed on the first material spraying pipe 21 at equal intervals, and the second material spraying pipes 22 are located above the first material spraying pipe 21. A plurality of first material subassembly 2 that spout is along the equidistant evenly distributed of cross section of blast pipe 1 on blast pipe 1, and two adjacent first material subassemblies 2 that spout leave the space between.

First spout material pipe 21 and external desulfurization material intercommunication, during external desulfurization material passes through pump or compressed air and carries to first spout material pipe 21, the desulfurization material spouts from the second in spouting material pipe 22 to make the flue gas in the blast pipe 1 mix with the desulfurization material, first stirring subassembly 3 makes the flue gas take place rotatoryly in blast pipe 1, and rotatory flue gas and desulfurization material can mix more evenly.

Referring to fig. 4 and 5, in order to further uniformly mix the flue gas and the desulfurization material, a plurality of second injection assemblies 5 are disposed on the exhaust pipe 1, and each second injection assembly 5 includes a third injection pipe 51 and a plurality of fourth injection pipes 52. The third material spraying pipe 51 is fixedly connected to the exhaust pipe 1 and penetrates out of the exhaust pipe 1, the third material spraying pipe 51 is communicated with an external desulfurization material, the fourth material spraying pipes 52 are fixedly connected to the third material spraying pipe 51, the fourth material spraying pipes 52 are communicated with the third material spraying pipe 51, and the fourth material spraying pipes 52 are equidistantly distributed on the third material spraying pipe 51. The second spraying components 5 are located above the first spraying components 2, the second spraying components 5 and the first spraying components 2 are distributed in a staggered mode, the second spraying components 5 are located above a gap between the two adjacent first spraying components 2, and the fourth spraying pipe 52 faces the first spraying components 2.

The external desulfurization material gets into third spouts material pipe 51 and spouts from fourth spouts material pipe 52 in, the flue gas passes first spout material subassembly 2 after mix with the second spout material subassembly 5 spun desulfurization material once more to make the flue gas higher with the mixing degree of desulfurization material.

Referring to fig. 2, in order to make the flue gas rotate better when entering the exhaust pipe 1, the exhaust pipe 1 is a circular pipe, and the flue gas is more stable when rotating along the inner wall of the circular exhaust pipe 1. A guide plate 4 is arranged at the air inlet 11 of the exhaust pipe 1, one end of the guide plate 4 is fixedly connected to the side wall of the exhaust pipe 1, the other end of the guide plate 4 is a free end, and the free end of the guide plate 4 is located inside the exhaust pipe 1. When the flue gas enters the exhaust pipe 1, the guide plate 4 changes the flow direction of the flue gas, and the flue gas flows in the direction of the air ejected from the first air injection pipe 31, so that the flue gas is better rotated in the exhaust pipe 1.

The implementation principle of the SCR desulphurization device in the embodiment of the application is as follows: flue gas gets into in blast pipe 1 and leads through deflector 4 from air inlet 11, air pump 33 takes out the outside air and delivers to first jet-propelled pipe 31 and second jet-propelled pipe 32 in, the air changes the flow direction of flue gas after spouting in first jet-propelled pipe 31 and the second jet-propelled pipe 32, thereby make the flue gas rotatory at the in-process that rises, first material subassembly 2 and the second of spouting spouts material subassembly 5 spouts the outside desulfurization material to blast pipe 1, the desulfurization material mixes more evenly with rotatory flue gas, thereby the desulfurization effect of flue gas has been improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. An SCR desulfurization device, characterized in that: the device comprises an exhaust pipe (1), an air inlet (11) and an air outlet (12) which are arranged on the exhaust pipe (1), a first material spraying component (2) which is arranged on the exhaust pipe (1) and used for spraying materials into the exhaust pipe (1), and a stirring component (3) which is arranged on the exhaust pipe (1) and used for stirring flue gas; the stirring assembly (3) comprises a first air injection pipe (31) arranged on the inner wall of the exhaust pipe (1), a second air injection pipe (32) arranged on the inner wall of the exhaust pipe (1) and an air pump (33) communicated with the first air injection pipe (31) and the second air injection pipe (32); first material subassembly (2) of spouting is located the top of stirring subassembly (3), the lateral wall of blast pipe (1) is all passed in first jet-propelled pipe (31) and second jet-propelled pipe (32), the jet-propelled opposite direction of first jet-propelled pipe (31) and second jet-propelled pipe (32), the jet-propelled pipe of second (32) is located the offside of first jet-propelled pipe (31), air pump (33) are located the outside of blast pipe (1).

2. The SCR desulfurization device according to claim 1, characterized in that: the exhaust pipe (1) is a round pipe.

3. The SCR desulfurization device according to claim 1, characterized in that: the first material spraying assembly (2) comprises a first material spraying pipe (21) rotatably connected to the exhaust pipe (1) and a plurality of second material spraying pipes (22) arranged on the first material spraying pipe (21); the plurality of second spraying pipes (22) are communicated with the first spraying pipe (21), the first spraying pipe (21) penetrates through the side wall of the exhaust pipe (1), and the plurality of second spraying pipes (22) are located inside the exhaust pipe (1).

4. An SCR desulfurization device according to claim 3, characterized in that: the number of the first spray pipes (21) is multiple; the first spraying pipes (21) are uniformly distributed along the cross section direction of the exhaust pipe (1).

5. An SCR desulfurization device according to claim 3, characterized in that: the exhaust pipe (1) is provided with a guide plate (4); one end of the guide plate (4) is fixedly connected to the exhaust pipe (1), the other end of the guide plate is a free end, and the free end of the guide plate (4) is positioned in the exhaust pipe (1); the flow direction of the flue gas along the guide plate (4) is consistent with the gas spraying direction of the first gas spraying pipe (31).

6. The SCR desulfurization device according to claim 1, characterized in that: the stirring components (3) are arranged in a plurality of axial directions along the exhaust pipe (1), and the stirring components (3) are distributed at equal intervals along the axial directions of the exhaust pipe (1).

7. An SCR desulfurization device according to claim 3, characterized in that: the first material spraying pipe (21) is provided with a material spraying hole (23); the material spraying holes (23) are positioned on two sides of the second material spraying pipe (22).

8. An SCR desulfurization device according to claim 3, characterized in that: a second material spraying component (5) is arranged on the exhaust pipe (1); the second material spraying assembly (5) comprises a third material spraying pipe (51) arranged on the exhaust pipe (1) and a plurality of fourth material spraying pipes (52) arranged on the third material spraying pipe (51); the number of the third material spraying pipes (51) is multiple, and the third material spraying pipes (51) are uniformly distributed along the cross section direction of the exhaust pipe (1); the second material spraying assembly (5) is located above the first material spraying assembly (2), the third material spraying pipes (51) and the first material spraying pipes (21) are distributed in a staggered mode, and the fourth material spraying pipes (52) face the first material spraying assembly (2).

Images