CN218944741U

CN218944741U - Alkaline washing spray tower for flue gas treatment

Info

Publication number: CN218944741U
Application number: CN202223113023.2U
Authority: CN
Inventors: 王波
Original assignee: Weng'an County Ryoma Phosphorus Industry Co ltd
Current assignee: Weng'an County Ryoma Phosphorus Industry Co ltd
Priority date: 2022-11-23
Filing date: 2022-11-23
Publication date: 2023-05-02
Anticipated expiration: 2032-11-23

Abstract

The utility model provides a flue gas treatment alkaline washing spray tower which comprises a tank body, an air inlet pipe connected to the bottom of the tank body, an air exhaust pipe connected to the top of the tank body and a drain pipe connected to the bottom of the tank body, wherein a spiral spray head which sprays downwards is arranged in the middle of the tank body, a circular truncated cone-shaped diversion bucket is coaxially arranged in the tank body, the diversion bucket is of a tubular structure, a pipe orifice at the top end is smaller than a pipe orifice at the bottom end, the spiral spray head is positioned right above an opening at the top of the diversion bucket, a mounting plate which is coaxial with the tank body is arranged above the spiral spray head, a self-rotating spray head which can rotate in the spraying process is arranged in the middle of the top of the mounting plate, the spraying direction of the self-rotating spray head faces the inner wall of the tank body, and a gap is formed between the mounting plate and the inner wall of the tank body. The utility model has the effect of strengthening the alkaline washing capability of the flue gas.

Description

Alkaline washing spray tower for flue gas treatment

Technical Field

The utility model relates to the technical field of spray towers, in particular to a flue gas treatment alkaline washing spray tower.

Background

After the sewage treatment rotary kiln flue gas is sprayed by the alkaline washing spray tower, the discharged flue gas is obvious, and the expected effect cannot be achieved. In addition, the flue gas contains more acidic substances, which causes serious corrosion to the rear flue gas pipeline, and often causes leakage of flue gas and condensed water.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model provides a flue gas treatment alkaline washing spray tower, which solves the problems that the alkaline washing spray tower in the prior art cannot reduce the discharge of flue gas and has insufficient alkaline washing effect on flue gas.

According to the embodiment of the utility model, the alkaline washing spray tower for flue gas treatment comprises a tank body, an air inlet pipe connected to the bottom of the tank body, an air exhaust pipe connected to the top of the tank body and a drain pipe connected to the bottom of the tank body, wherein a spiral spray head which sprays downwards is arranged in the middle of the tank body, a round table-shaped diversion bucket is coaxially arranged in the tank body, the diversion bucket is of a tubular structure, a pipe orifice at the top end is smaller than a pipe orifice at the bottom end, the spiral spray head is positioned right above an opening at the top of the diversion bucket, a mounting plate which is coaxial with the tank body is arranged above the spiral spray head, a self-rotating spray head which can rotate in the spraying process is arranged in the middle of the top of the mounting plate, the spraying direction of the self-rotating spray head faces the inner wall of the tank body, and a gap is formed between the mounting plate and the inner wall of the tank body.

Preferably, a gap is arranged between the bottom end of the diversion bucket and the inner wall of the tank body.

Preferably, a grating plate is horizontally arranged in the tank body, and the grating plate is positioned below the diversion bucket.

Preferably, the surfaces of the grating plate, the guide hopper and the mounting plate are all sprayed with corrosion-resistant coatings.

Preferably, the mounting plate is connected to the inner wall of the tank body through a connecting plate arranged around the axis of the mounting plate, the connecting plate is vertically arranged, and the length of the end part of the connecting plate connected to the tank body is longer than that of the end part of the connecting plate connected to the mounting plate.

Preferably, the water supply pipelines of the spiral spray head and the self-rotating spray head are connected with the mounting plate through annular buckles.

Compared with the prior art, the utility model has the following beneficial effects:

the guide hopper is arranged to collect the flue gas below the spiral spray head, and the spiral spray head sprays the flue gas, so that the alkaline washing effect of the flue gas is enhanced; after the flue gas passes through the spiral shower nozzle, the alkaline cleaning of rethread autogyration shower nozzle, twice alkaline cleaning, and the spray direction orientation jar internal wall of autogyration shower nozzle, when the flue gas passes through the mounting panel, the flue gas passes through from the clearance of mounting panel and jar internal wall, just by the accurate alkaline cleaning of autogyration shower nozzle, has strengthened the clearance effect to the flue gas.

Drawings

Fig. 1 is a schematic diagram of an internal structure of an embodiment of the present utility model.

Fig. 2 is an enlarged view of the area a in fig. 1.

FIG. 3 is a schematic view of a grid plate according to an embodiment of the present utility model.

In the above figures: 1. a tank body; 2. an air inlet pipe; 3. an exhaust pipe; 4. a drain pipe; 5. a mounting plate; 6. a spiral spray head; 7. self-rotating spray head; 8. a connecting plate; 9. a diversion bucket; 10. a fixed rod; 11. and a grating plate.

Detailed Description

The technical scheme of the utility model is further described below with reference to the accompanying drawings and examples.

As shown in fig. 1-2, to enhance the flue gas gap effect of the caustic wash spray tower. The utility model provides a flue gas treatment alkaline washing spray tower, which comprises a tank body 1, an air inlet pipe 2 connected to the bottom of the tank body 1, an air outlet pipe 3 connected to the top of the tank body 1 and a drain pipe 4 connected to the bottom of the tank body 1, wherein a spiral spray nozzle 6 for spraying downwards is arranged in the middle of the tank body 1, a truncated cone-shaped guide funnel 9 is coaxially arranged in the tank body 1, the guide funnel 9 is of a tubular structure, the top end pipe orifice is smaller than the bottom end pipe orifice, the spiral spray nozzle 6 is positioned right above an opening at the top of the guide funnel 9, a mounting plate 5 coaxial with the tank body 1 is arranged above the spiral spray nozzle 6, a self-rotating spray nozzle 7 capable of rotating in the spraying process is arranged in the middle of the top of the mounting plate 5, the spraying direction of the self-rotating spray nozzle 7 faces the inner wall of the tank body 1, and a gap is formed between the mounting plate 5 and the inner wall of the tank body 1.

The flue gas is conveyed into the tank body 1 through the air inlet pipe 2 at the bottom of the tank body 1, flows upwards along the inside of the tank body 1, and is collected through the guide hopper 9, so that the flue gas is positioned under the spiral spray head 6 (the existing spray head), the spiral spray head 6 below the mounting plate 5 sprays inverted conical alkali liquor, and preliminary alkali washing is carried out on the flue gas; after alkaline washing of the spiral spray head 6, flue gas flows through a gap between the mounting plate 5 and the inner wall of the tank body 1, an alkaline solution is sprayed out of the self-rotating spray head 7 (an existing spray head is commonly used for spraying on grasslands) on the mounting plate 5 towards the inner wall of the tank body 1, the self-rotating spray head 7 rotates when the alkaline solution is sprayed out of the self-rotating spray head 7, the flue gas passing through the self-rotating spray head is subjected to alkaline washing again, after two diversion and two alkaline washing, residual gas flows out of the exhaust pipe 3 at the top of the tank body 1, and alkaline washed water flows into the sedimentation tank from the drain pipe 4.

As shown in fig. 1, to avoid water accumulation at the top of the guide hopper 9. A gap is arranged between the bottom end of the diversion bucket 9 and the inner wall of the tank body 1. A fixing rod 10 is arranged at the top of the guide hopper 9 around the axis and is connected with the inner wall of the tank body 1 through the fixing rod 10, and the fixing rod 10 supports the guide hopper 9 and forms a gap between the guide hopper 9 and the inner wall of the tank body 1, so that part of alkali liquor flows down from the gap between the guide hopper 9 and the inner wall of the tank body 1.

As shown in FIGS. 1 and 3, the lye is fully utilized. The inner level of the tank body 1 is provided with a grating plate 11, and the grating plate 11 is positioned below the diversion bucket 9. The alkali solution sprayed from the spiral spray head 6 and the self-rotating spray head 7 is attached to the inner wall of the grating plate 11, and when the flue gas passes through the grating plate 11, the flue gas can be contacted with the alkali solution attached to the inner wall of the grating plate 11, so that the alkali washing effect is enhanced.

As a preferred embodiment of the utility model, the service life of the grating plates 11, the guide hoppers 9 and the mounting plates 5 is prolonged. The surfaces of the grating plate 11, the guide hopper 9 and the mounting plate 5 are all coated with corrosion-resistant coatings.

As shown in fig. 1-2, to achieve the fixation of the mounting plate 5. The mounting plate 5 is connected with the inner wall of the tank body 1 through a connecting plate 8 arranged around the axis of the mounting plate, the connecting plate 8 is vertically arranged, and the length of the end part of the connecting plate 8 connected with the tank body 1 is longer than that of the end part of the connecting plate 8 connected with the mounting plate 5. The connecting plate 8 is trapezoidal, and the connecting plate 8 is vertical to be arranged, can support mounting panel 5 effectively, can adhere to a certain amount of alkali lye on the connecting plate 8 simultaneously, strengthen the clearance effect to the flue gas of passing by.

As a preferred embodiment of the present utility model, stability of installation of the screw head 6 and the self-rotating head 7 is enhanced. The water supply pipelines of the spiral spray head 6 and the self-rotating spray head 7 are connected with the mounting plate 5 through annular buckles.

Claims

1. The utility model provides a flue gas treatment alkali wash spray column, includes jar body (1), connects in intake pipe (2) of jar body (1) bottom, connects in blast pipe (3) at jar body (1) top and connects in drain pipe (4) of jar body (1) bottom, its characterized in that: the middle part has arranged spiral shower nozzle (6) that spray downwards in jar body (1), coaxial arrangement has in jar body (1) water conservancy diversion fill (9) of round platform form, water conservancy diversion fill (9) are tubular structure, and top mouth of pipe is less than bottom mouth of pipe, spiral shower nozzle (6) are located water conservancy diversion fill (9) open-ended directly over, spiral shower nozzle (6) top is provided with mounting panel (5) coaxial with jar body (1), install in the middle of mounting panel (5) top self-rotating shower nozzle (7) at spraying in-process autorotation, the spraying direction of self-rotating shower nozzle (7) is towards the inner wall of jar body (1), be provided with the clearance between the inner wall of mounting panel (5) and jar body (1).

2. A flue gas treatment alkaline wash spray tower as claimed in claim 1, wherein: a gap is arranged between the bottom end of the diversion bucket (9) and the inner wall of the tank body (1).

3. A flue gas treatment alkaline wash spray tower as claimed in claim 1, wherein: the inner level of the tank body (1) is provided with a grating plate (11), and the grating plate (11) is positioned below the diversion bucket (9).

4. A flue gas treatment alkaline wash spray tower as claimed in claim 3, wherein: the surfaces of the grating plate (11), the guide hopper (9) and the mounting plate (5) are all coated with corrosion-resistant coatings.

5. A flue gas treatment alkaline wash spray tower as claimed in claim 1, wherein: the mounting plate (5) is connected with the inner wall of the tank body (1) through a connecting plate (8) which is arranged around the axis of the mounting plate, the connecting plate (8) is vertically arranged, and the length of the end part of the connecting plate (8) connected with the tank body (1) is larger than that of the end part of the connecting plate (8) connected with the mounting plate (5).

6. A flue gas treatment alkaline wash spray tower as claimed in claim 1, wherein: the water supply pipelines of the spiral spray head (6) and the self-rotating spray head (7) are connected with the mounting plate (5) through annular buckles.