CN220288254U

CN220288254U - Exhaust gas treatment system

Info

Publication number: CN220288254U
Application number: CN202321489880.4U
Authority: CN
Inventors: 徐志伟
Original assignee: Jiangsu Enfei Environmental Protection Equipment Co ltd
Current assignee: Jiangsu Enfei Environmental Protection Equipment Co ltd
Priority date: 2023-06-12
Filing date: 2023-06-12
Publication date: 2024-01-02
Anticipated expiration: 2033-06-12

Abstract

The utility model relates to the technical field of soil remediation, in particular to an exhaust gas treatment system, which comprises a rotary kiln, a dust removal box, an incinerator, a quenching tower and a chimney which are sequentially communicated, wherein the quenching tower comprises a tower body, a dust removal assembly and a spraying assembly, the dust removal assembly and the spraying assembly are arranged in the tower body, the tower body comprises a cylindrical smoke circulation section and a funnel-shaped liquid confluence section, the bottom end of the liquid confluence section is provided with a blanking port, the dust removal assembly comprises a rotary shaft, a first dust removal group, a second dust removal group and a power piece, the rotary shaft is rotatably arranged in the tower body, the first dust removal group is arranged in the middle of the rotary shaft, the second dust removal group is arranged at the bottom end of the rotary shaft, and the power piece is used for driving the rotary shaft to rotate; the utility model provides an exhaust gas treatment system which has simple structural design, automatically cleans ash in the quenching tower by a machine and automatically cleans a filter screen in a dust removal box.

Description

Exhaust gas treatment system

Technical Field

The utility model relates to the technical field of soil remediation, in particular to an exhaust gas treatment system.

Background

Soil remediation refers to the reduction of the concentration of pollutants in contaminated soil to acceptable levels or the conversion of toxic and hazardous pollutants to harmless materials, commonly used methods being thermal desorption and incineration. In the soil remediation process, a large amount of waste gas such as dioxin, dust, nitrogen oxides, sulfur dioxide and the like can be generated, and the waste gas needs to be purified through a waste gas treatment system in order to ensure that the waste gas meets the environmental protection emission requirement. The common waste gas treatment system is that waste gas generated by soil remediation in a rotary kiln is purified by a dust removal box, an incinerator and a quenching tower in sequence and finally discharged into the atmosphere through a chimney.

After the exhaust gas treatment system runs for a long time, the ash accumulation and wall hanging situations can occur in the quenching tower. In order to ensure the working performance of the quenching tower, the inside of the quenching tower needs to be cleaned regularly. Traditional ash removal methods are manually cleaned, are time-consuming and labor-consuming, and present a safety risk. At present, part of the quenching towers are cleaned mechanically and automatically, but the structural design is complex, and the cleaning effect cannot be ensured. In addition, after the exhaust gas treatment system runs for a long time, a large amount of dust can be attached to the filter screen inside the dust removal box, and if the dust removal box is not cleaned, the filter screen can be blocked, so that the dust removal effect of the dust removal box is affected.

Disclosure of Invention

The utility model aims to solve the technical problems that: overcomes the defects in the prior art, and provides an exhaust gas treatment system which has simple structural design, automatically cleans ash in the quenching tower by a machine and automatically cleans a filter screen in a dust box.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides an exhaust treatment system, includes rotary kiln, dust removal case, incinerator, quench tower and the chimney of intercommunication in proper order, the quench tower includes the tower body and sets up the deashing subassembly and spray the subassembly in the tower body, the tower body includes cylindric flue gas circulation section and the liquid section that converges of funnel form, the blanking mouth has been seted up to the bottom of liquid section that converges, the deashing subassembly is including rotating the rotation axis that sets up in the tower body, install at the first deashing group in rotation axis middle part, install at the rotatory power piece of rotation axis bottom the second deashing group and drive rotation axis, spray the subassembly setting on the top of flue gas circulation section, and be located the top of first deashing group.

Further, the first ash removal group comprises a nut, a stay bar and a scraping ring, the nut is connected with the scraping ring through the stay bar, an external thread is formed in the middle of the rotating shaft, the nut is sleeved on the middle of the rotating shaft, and the outer ring of the scraping ring is in contact with the inner wall of the smoke circulation section.

Further, a plurality of guide grooves are formed in the inner wall of the smoke circulation section, guide blocks are connected in a sliding mode in the guide grooves, the guide blocks are connected with the scraping rings, the guide grooves are uniformly distributed along the circumferential direction of the smoke circulation section, and the guide grooves are formed along the axial length of the smoke circulation section.

Further, the second ash removal group is including installing a plurality of connecting rods in the rotation axis bottom and installing the scraping strip in the connecting rod bottom respectively, the connecting rod is evenly arranged along the circumference of rotation axis, the outside of scraping strip and the inner wall contact of liquid conflux section.

Further, the scraping strip is arc-shaped.

Further, the bottom of the rotating shaft is rotatably provided with a shaft seat, and the shaft seat is connected with the inner wall of the liquid converging section through a plurality of support columns.

Further, the spray assembly comprises a spray pipe and a plurality of atomizing spray heads arranged on the spray pipe, and the spray pipe is communicated with a liquid inlet main pipe at the top end of the tower body.

Further, the dust removal case comprises a case body, a filter screen arranged in the case body and a cleaning assembly rotatably arranged on the filter screen, wherein the top end of the case body is provided with a cylindrical flue gas outlet section and a trumpet-shaped flue gas gathering section, the bottom end of the case body is provided with a dust falling port, and the filter screen is arranged below the flue gas gathering section.

Further, clean the subassembly including rotate the pivot of wearing to locate the filter screen center, install a plurality of impellers on the pivot top and install a plurality of cleaning brushes in the pivot bottom, the impeller sets up in the flue gas section of giving vent to anger, cleaning brushes set up in the filter screen below, and its brush hair and filter screen contact.

Further, the incinerator is communicated with the quenching tower through the heat exchanger, and the quenching tower is communicated with the chimney through the induced draft fan.

The beneficial effects of the utility model are as follows:

(1) The utility model drives the rotating shaft to rotate through the power piece, so that the first ash removing group can remove ash on the inner wall of the smoke circulation section, and the second ash removing group can remove ash on the inner wall of the liquid confluence section, so that the structure design is simple, the automation degree is high, and the ash removal is thorough;

(2) According to the utility model, the impeller is driven to rotate by the flue gas flowing through the flue gas outlet section, and the cleaning brush is driven to rotate by the rotating shaft, so that the filter screen is automatically cleaned, and the condition of blockage of the filter screen is avoided.

Drawings

The utility model will be further described with reference to the drawings and embodiments.

FIG. 1 is a schematic illustration of the present utility model;

FIG. 2 is a schematic view of the interior of the quench tower of the present utility model;

fig. 3 is an enlarged view of a portion a in fig. 2;

fig. 4 is an enlarged view of a portion B in fig. 2;

FIG. 5 is a cross-sectional view of a channel in the present utility model;

FIG. 6 is a schematic view of a wiper strip of the present utility model;

fig. 7 is an internal schematic view of the dust box in the present utility model.

In the figure: 1. a rotary kiln; 2. a dust removal box; 2a, a box body; 2b, a filter screen; 2c, a cleaning assembly; 2c1, a rotating shaft; 2c2, impellers; 2c3, cleaning brush; 3. an incinerator; 4. a quenching tower; 4a, a tower body; 4a1, a flue gas circulation section; 4a2, a liquid confluence section; 4b, an ash removing component; 4b1, a rotation shaft; 4b2, a first ash removal group; 4b21, a nut; 4b22, stay bars; 4b23, a scraper ring; 4b3, a second ash removal group; 4b31, connecting rod; 4b32, scraping strips; 4b4, a power piece; 4c, a spraying assembly; 4c1, a spray pipe; 4c2, atomizing nozzle; 5. a chimney; 6. a blanking port; 7. an external thread; 8. a guide groove; 9. a guide block; 10. a shaft seat; 11. a support column; 12. a liquid inlet main pipe; 13. a flue gas outlet section; 14. a flue gas collection section; 15. an ash falling port; 16. a heat exchanger; 17. and (5) a draught fan.

Detailed Description

The utility model will now be further described with reference to the accompanying drawings. These drawings are simplified schematic views illustrating the basic structure of the present utility model by way of illustration only, and thus show only the constitution related to the present utility model.

As shown in fig. 1-4, an exhaust gas treatment system comprises a rotary kiln 1, a dust removal box 2, an incinerator 3, a quenching tower 4 and a chimney 5 which are sequentially communicated, wherein the quenching tower 4 comprises a tower body 4a, a dust removal assembly 4b and a spraying assembly 4c which are arranged in the tower body 4a, the tower body 4a comprises a cylindrical smoke circulation section 4a1 and a funnel-shaped liquid confluence section 4a2, a blanking port 6 is formed in the bottom end of the liquid confluence section 4a2, the dust removal assembly 4b comprises a rotary shaft 4b1 which is rotatably arranged in the tower body 4a, a first dust removal group 4b2 which is arranged in the middle of the rotary shaft 4b1, a second dust removal group 4b3 which is arranged at the bottom end of the rotary shaft 4b1 and a power piece 4b4 which drives the rotary shaft 4b1 to rotate, and the spraying assembly 4c is arranged at the top end of the smoke circulation section 4a1 and is positioned above the first dust removal group 4b 2. The rotary shaft 4b1 is driven to rotate through the power piece 4b4, the ash removal of the inner wall of the smoke circulation section 4a1 by the first ash removal group 4b2 is realized, and the ash removal of the inner wall of the liquid confluence section 4a2 by the second ash removal group 4b3 is realized simultaneously. Specifically, the conventional structures adopted by the rotary kiln 1 and the incinerator 3 are not described in detail herein; the tower body 4a is supported on the bracket; the top end of the rotating shaft 4b1 passes through the top end of the quenching tower 4 and is in transmission connection with the power piece 4b4, and the rotating shaft 4b1 is in running fit with the quenching tower 4; the power member 4b4 is a servo motor.

As shown in fig. 2 and 3, the first ash removing group 4b2 includes a nut 4b21, a supporting rod 4b22 and a scraping ring 4b23, the nut 4b21 and the scraping ring 4b23 are connected by a plurality of supporting rods 4b22, an external thread 7 is formed at the middle part of the rotating shaft 4b1, the nut 4b21 is sleeved at the middle part of the rotating shaft 4b1 in a threaded manner, and the outer ring of the scraping ring 4b23 is in contact with the inner wall of the smoke circulation section 4a 1. During operation, the power piece 4b4 drives the rotating shaft 4b1 to rotate, the rotation of the rotating shaft 4b1 enables the nut 4b21 to move downwards along the axial direction of the rotating shaft 4b1, the scraping ring 4b23 is driven to move downwards synchronously, dust attached to the inner wall of the smoke circulation section 4a1 is scraped off on the outer side of the scraping ring 4b23, ash removal on the inner wall of the smoke circulation section 4a1 is achieved, and finally the power piece 4b4 drives the rotating shaft 4b1 to rotate reversely, so that the nut 4b21 moves upwards along the axial direction of the rotating shaft 4b1 to reset. Specifically, the number of stay bars 4b22 is three.

As shown in fig. 5, the inner wall of the smoke circulation section 4a1 is provided with a plurality of guide grooves 8, guide blocks 9 are slidably connected in the guide grooves 8, the guide blocks 9 are connected with the scraping rings 4b23, the guide grooves 8 are uniformly arranged along the circumferential direction of the smoke circulation section 4a1, and the smoke circulation section 4a1 is provided with a plurality of guide grooves along the axial direction of the smoke circulation section. By the sliding fit of the guide groove 8 and the guide block 9, the stability of the up-and-down movement of the scraper ring 4b23 is ensured. Specifically, the number of the guide grooves 8 is three.

As shown in fig. 2, 4 and 6, the second ash removal group 4b3 includes a plurality of connecting rods 4b31 installed at the bottom end of the rotating shaft 4b1 and scraping bars 4b32 installed at the bottom ends of the connecting rods 4b31, respectively, the connecting rods 4b31 are uniformly arranged along the circumferential direction of the rotating shaft 4b1, and the outer sides of the scraping bars 4b32 are in contact with the inner wall of the liquid bus section 4a 2. During operation, the power piece 4b4 drives the rotating shaft 4b1 to rotate, the rotation of the rotating shaft 4b1 drives the scraping strip 4b32 to rotate through the connecting rod 4b31, dust attached to the inner wall of the liquid confluence section 4a2 is scraped off by the outer side of the scraping strip 4b32, and ash removal on the inner wall of the liquid confluence section 4a2 is achieved. Specifically, the scraping bar 4b32 is arc-shaped, and guides the dust scraped off by the inner wall of the liquid converging section 4a2 to the blanking port 6.

As shown in fig. 4, in order to ensure stable rotation of the rotating shaft 4b1, a shaft seat 10 is rotatably installed at the bottom end of the rotating shaft 4b1, and the shaft seat 10 is connected with the inner wall of the liquid converging section 4a2 through a plurality of support columns 11.

As shown in fig. 2 and 3, the spray assembly 4c includes a spray pipe 4c1 and a plurality of atomizing nozzles 4c2 mounted on the spray pipe 4c1, and the spray pipe 4c1 is communicated with a liquid inlet main pipe 12 at the top end of the tower body 4 a. The spray assembly 4c is prior art and will not be described in any greater detail herein.

The system designs the liquid confluence section 4a2 into a funnel shape, so that the scraped dust in the tower body 4a or the liquid sprayed by the spraying component 4c is gathered on the liquid confluence section 4a2 and is discharged from the blanking port 6.

As shown in fig. 7, the dust removing box 2 includes a box body 2a, a filter screen 2b disposed in the box body 2a, and a cleaning assembly 2c rotatably mounted on the filter screen 2b, wherein a cylindrical flue gas outlet section 13 and a horn-shaped flue gas collecting section 14 are disposed at the top end of the box body 2a, a dust falling port 15 is disposed at the bottom end of the box body, and the filter screen 2b is disposed below the flue gas collecting section 14. Specifically, the case 2a is supported on a bracket.

As shown in fig. 7, the cleaning assembly 2c includes a rotating shaft 2c1 rotatably penetrating through the center of the filter screen 2b, a plurality of impellers 2c2 mounted on the top end of the rotating shaft 2c1, and a plurality of cleaning brushes 2c3 mounted on the bottom end of the rotating shaft 2c1, the impellers 2c2 are disposed in the flue gas outlet section 13, the cleaning brushes 2c3 are disposed below the filter screen 2b, and the bristles thereof are in contact with the filter screen 2 b. The impeller 2c2 is driven to rotate by the flue gas flowing through the flue gas outlet section 13, and then the cleaning brush 2c3 is driven to rotate by the rotating shaft 2c1, so that the filter screen 2b is automatically cleaned, and the condition that the filter screen 2b is blocked is avoided.

The system designs the flue gas gathering section 14 into a horn shape, so that more flue gas flows to the flue gas outlet section 13 more smoothly, thereby meeting the kinetic energy required by the rotation of the impeller 2c 2.

As shown in fig. 1, the system further comprises a heat exchanger 16 and an induced draft fan 17, the incinerator 3 is communicated with the quenching tower 4 through the heat exchanger 16, and the quenching tower 4 is communicated with the chimney 5 through the induced draft fan 17. The heat exchanger 16 is arranged to recycle waste heat of the waste gas discharged by the incinerator 3 and achieve the effect of cooling; the induced draft fan 17 is arranged to enable the purified waste gas to be discharged from the chimney 5 as soon as possible.

The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.

Claims

1. The utility model provides an exhaust treatment system, includes rotary kiln (1), dust bin (2), incinerator (3), quench tower (4) and chimney (5) that communicate in proper order, its characterized in that: quench tower (4) include tower body (4 a) and set up deashing subassembly (4 b) and spray assembly (4 c) in tower body (4 a), tower body (4 a) are including cylindric flue gas circulation section (4 a 1) and funnel-shaped liquid conflux section (4 a 2), blanking mouth (6) have been seted up to the bottom of liquid conflux section (4 a 2), deashing subassembly (4 b) are including rotating rotation axis (4 b 1) that sets up in tower body (4 a), install first deashing group (4 b 2) at rotation axis (4 b 1) middle part, install second deashing group (4 b 3) and drive rotation axis (4 b 1) rotatory power piece (4 b 4) in rotation axis (4 b 1), spray assembly (4 c) set up on the top of flue gas circulation section (4 a 1), and lie in the top of first deashing group (4 b 2).

2. The exhaust treatment system of claim 1, wherein: the first ash removal group (4 b 2) comprises a nut (4 b 21), a supporting rod (4 b 22) and a scraping ring (4 b 23), wherein the nut (4 b 21) is connected with the scraping ring (4 b 23) through the supporting rod (4 b 22), an external thread (7) is formed in the middle of the rotating shaft (4 b 1), the nut (4 b 21) is sleeved on the middle of the rotating shaft (4 b 1) in a threaded manner, and the outer ring of the scraping ring (4 b 23) is in contact with the inner wall of the smoke circulation section (4 a 1).

3. The exhaust treatment system of claim 2, wherein: the inner wall of flue gas circulation section (4 a 1) has seted up a plurality of guide slots (8), sliding connection has guide block (9) in guide slot (8), guide block (9) are connected with scraping ring (4 b 23), guide slot (8) are evenly arranged along the circumference of flue gas circulation section (4 a 1), and set up along the axial of flue gas circulation section (4 a 1) logical length.

4. The exhaust treatment system of claim 1, wherein: the second ash removal group (4 b 3) comprises a plurality of connecting rods (4 b 31) arranged at the bottom end of the rotating shaft (4 b 1) and scraping strips (4 b 32) respectively arranged at the bottom end of the connecting rods (4 b 31), the connecting rods (4 b 31) are uniformly arranged along the circumferential direction of the rotating shaft (4 b 1), and the outer sides of the scraping strips (4 b 32) are in contact with the inner wall of the liquid converging section (4 a 2).

5. The exhaust treatment system of claim 4, wherein: the scraping strip (4 b 32) is arc-shaped.

6. The exhaust treatment system of claim 1, wherein: the bottom end of the rotating shaft (4 b 1) is rotatably provided with a shaft seat (10), and the shaft seat (10) is connected with the inner wall of the liquid converging section (4 a 2) through a plurality of supporting columns (11).

7. The exhaust treatment system of claim 1, wherein: the spray assembly (4 c) comprises a spray pipe (4 c 1) and a plurality of atomizing spray heads (4 c 2) arranged on the spray pipe (4 c 1), and the spray pipe (4 c 1) is communicated with a liquid inlet main pipe (12) at the top end of the tower body (4 a).

8. The exhaust treatment system of claim 1, wherein: the dust removal box (2) comprises a box body (2 a), a filter screen (2 b) arranged in the box body (2 a) and a cleaning assembly (2 c) rotatably arranged on the filter screen (2 b), a cylindrical flue gas outlet section (13) and a horn-shaped flue gas gathering section (14) are arranged at the top end of the box body (2 a), a dust falling port (15) is formed in the bottom end of the box body, and the filter screen (2 b) is arranged below the flue gas gathering section (14).

9. The exhaust treatment system of claim 8, wherein: the cleaning assembly (2 c) comprises a rotating shaft (2 c 1) penetrating through the center of the filter screen (2 b), a plurality of impellers (2 c 2) arranged at the top end of the rotating shaft (2 c 1) and a plurality of cleaning brushes (2 c 3) arranged at the bottom end of the rotating shaft (2 c 1), wherein the impellers (2 c 2) are arranged in the flue gas outlet section (13), the cleaning brushes (2 c 3) are arranged below the filter screen (2 b), and bristles of the cleaning brushes are in contact with the filter screen (2 b).

10. The exhaust treatment system of claim 1, wherein: the incinerator is characterized by further comprising a heat exchanger (16) and an induced draft fan (17), wherein the incinerator (3) is communicated with the quenching tower (4) through the heat exchanger (16), and the quenching tower (4) is communicated with the chimney (5) through the induced draft fan (17).