Environment air purification tail gas deodorization system of sludge drying plant

Abstract

The utility model discloses a sludge drying workshop environment air purification tail gas deodorization system, including the purification tail gas discharge pipe, this purification tail gas discharge pipe is set up vertically, and the upper end of purification tail gas discharge pipe is tail gas outlet, still includes water supply module and spray module, the spray module sets up in the purification tail gas discharge pipe, and the spray module is close to the upper end outlet of purification tail gas discharge pipe, the spray module includes the water distribution pipe network and installs a plurality of spray heads on the water distribution pipe network, and the spray head's spray outlet is set up to the downward, and water supply module supplies water to the water distribution pipe network through the pipeline.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection, specifically to the field of spatial environment purification in the sewage treatment process. Background Technology

[0002] After wastewater treatment, the water-containing sludge needs to undergo drying. A common drying process for water-containing sludge is oven drying. The sludge has a high organic content, and the drying process releases a large amount of odor. This odor is difficult to remove in the drying workshop, which not only deteriorates the working environment but also pollutes the surrounding atmosphere. To avoid or improve these situations, some drying workshops are equipped with large-scale ambient air purification systems. These systems extract and purify the ambient air from the entire workshop, effectively removing odors.

[0003] However, as people's requirements for the atmospheric environment become higher and higher, the testing and evaluation of the exhaust gas of the purification system by various departments are becoming more and more stringent; this requires the workshop to further purify and deodorize the small amount / trace amount of odor remaining in the exhaust gas of the purification system. Summary of the Invention

[0004] To further purify and deodorize the exhaust gas discharged from the ambient air purification system of the sludge drying workshop, this utility model provides a water-washing purification device installed at the tail end of the exhaust pipe of the original purification system. The main technical solution adopted is as follows: A system for purifying exhaust gas and removing odors in the ambient air of a sludge drying workshop includes a purified exhaust gas discharge pipe, which is vertically arranged and has an exhaust gas outlet at its upper end. The system is characterized by further including a water supply module and a spray module, wherein the spray module is disposed inside the purified exhaust gas discharge pipe and is located near the upper outlet of the purified exhaust gas discharge pipe. The spray module includes a water distribution network and a plurality of nozzles installed on the water distribution network. The nozzles have their nozzle outlets facing downwards. The water supply module supplies water to the water distribution network through pipelines. Attached Figure Description

[0005] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural schematic diagram of water supply module 2; Figure 3 This is a schematic diagram of the structure of spray module 3. Detailed Implementation

[0006] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0007] like Figure 1 , 2As shown in Figures 1 and 3, an ambient air purification and exhaust gas deodorization system for a sludge drying workshop includes a purified exhaust gas discharge pipe 1, a water supply module 2, and a spray module 3.

[0008] The purified exhaust gas discharge pipe 1 is vertically arranged, and the upper end of the purified exhaust gas discharge pipe 1 is the exhaust gas outlet. Specifically, the purified exhaust gas discharge pipe 1 includes a booster pipe 11, an expansion pipe 12, an extension pipe 13, and a constriction pipe 14. The booster pipe 11 and the extension pipe 13 are both vertically arranged, and both the booster pipe 11 and the extension pipe 13 are circular pipes. The expansion pipe 12 and the constriction pipe 14 are both frustum-shaped pipes. The inner diameter of the extension pipe 13 is larger than the inner diameter of the booster pipe 11, and the extension pipe 13 is located directly above the booster pipe 11. The lower end of the booster tube 11 is closed, the small end of the expansion tube 12 is connected to the upper end of the booster tube 11, the large end of the expansion tube 12 is connected to the lower end of the extension tube 13, the upper end of the extension tube 13 is connected to the large end of the closing tube 14, and the small end of the closing tube 14 faces upward to form the exhaust outlet. The spray module 3 is disposed inside the purified exhaust gas discharge pipe 1, and the spray module 3 is close to the upper outlet of the purified exhaust gas discharge pipe 1; the spray module 3 includes a water distribution network 31 and a plurality of nozzles 32 installed on the water distribution network 31, the nozzles 32 are arranged with their spray outlets facing downwards, and the water supply module 2 supplies water to the water distribution network 31 through the pipeline.

[0009] As a more specific implementation method: The water supply module 2 includes a water tank 21 and a deodorant dosing tank 22. An inlet pipe 23a is connected to the upper part of the water tank 21. The inlet pipe 23a includes a greywater inlet pipe and a tap water inlet pipe connected in parallel. The greywater inlet pipe is the main inlet pipe, and the tap water inlet pipe is the auxiliary inlet pipe, serving as a supplement when the main inlet pipe is interrupted. The inlet pipe 23a is preferably located at the upper part of the water tank 21. The lower part of the water tank 21 is connected to a water outlet pipe 23b, which is preferably located at the bottom of the water tank 21. The end of the water outlet pipe 23b is connected to the water distribution network 31. A liquid delivery pump 24 is installed on the water outlet pipe 23b. When the liquid delivery pump 24 is powered on, it delivers water from the water tank 21 to the water distribution network 31.

[0010] The deodorant dosing tank 22 is installed above the water tank 21. A dosing agent outlet pipe 25 is provided at the lower part of the deodorant dosing tank 22, and the outlet of the outlet pipe 25 forms the outlet of the deodorant dosing tank 22. The outlet pipe 25 extends downward into and communicates with the top of the water tank 21. A transparent liquid level observation window is also provided on the tank wall of the deodorant dosing tank 22 for observing the remaining amount of deodorant in the tank. A tank cover is also provided on the top of the deodorant dosing tank 22, which is hinged to the top edge of the tank. A dosing solenoid valve 26 is installed on the dosing agent outlet pipe 25.

[0011] The deodorant dosing tank 22 contains deodorant. After the dosing solenoid valve 26 is opened, the deodorant flows into the water tank 21 under gravity and mixes with the water to form a deodorant dilution.

[0012] To improve the dispersion and mixing effect of the deodorizing agent in the deodorizing agent dilution solution, a mixing hopper 27 is provided inside the water tank 21. The larger end of the mixing hopper 27 faces upward and the smaller end faces downward. The mixing hopper 27 is located below the water inlet pipe 23a. The water from the water inlet pipe 23a and the agent from the agent outlet pipe 25 both fall into the mixing hopper 27 and mix. After the water and agent enter the mixing hopper 27 simultaneously, they gather at the smaller opening at the lower end and flow downward, finally falling to the bottom of the water tank 21. By enhancing the water's own flow, the agent is dispersed and mixed evenly, avoiding the need for a dedicated stirring device, thus achieving the goal of cost reduction and efficiency improvement.

[0013] To facilitate the disassembly and assembly of the mixing hopper 27, several support blocks 28 are provided on the inner wall of the water tank 21, and the edge of the mixing hopper 27 rests on the support blocks 28.

[0014] The lower end of the mixing hopper 27 is provided with an extended vortex tube 29. The extended vortex tube 29 is vertically arranged and is a circular tube. The upper end of the extended vortex tube 29 is connected to the small opening at the lower end of the mixing hopper 27. When the deodorant dilution flows downward through the extended vortex tube 29, the dilution will spontaneously swirl based on the Korotkoff effect (counterclockwise swirling in the Northern Hemisphere), further improving the mixing effect of the deodorant dilution.

[0015] The spray module 3 also includes a spray support frame 33, which is placed on the inner wall of the expansion tube 12. The top of the spray support frame 33 extends upward to the upper part of the extension tube 13. Specifically, the support frame 33 includes a bottom support ring and a longitudinal support column. The bottom support ring is placed on the inner wall of the expansion tube 12, the lower part of the longitudinal support column is fixedly connected to the bottom support ring, and the water distribution network 31 is fixed to the top of the longitudinal support column. The water distribution network 31 is arranged inside the extension tube 13.

[0016] The water tank 21 is also equipped with a float level switch, which is used to control the water inlet pipe 23a to supply water to the water tank 21.

[0017] The lower end of the booster tube 11 is closed, and a drain pipe is provided at the lower end of the booster tube 11. The deodorizing agent diluted solution sprayed from the nozzle 32 collects at the bottom of the booster tube 11 and is discharged through the drain pipe. A horizontal purified exhaust gas delivery pipe is connected to the lower part of the booster tube 11.

[0018] The outlet pipe 23b extends into the booster pipe 11 from the lower end and extends upward, and is connected to the water distribution network 31. The joint between the outlet pipe 23b and the booster pipe 11 is sealed.

[0019] The water distribution network 31 includes annular pipe sections and cross-shaped pipe sections. The cross-shaped pipe sections are located within the annular pipe sections and are connected to the annular pipe sections. The longitudinal support column is preferably a steel water pipe. The upper end of the longitudinal support column is connected to the center of the cross-shaped pipe section, and the lower end of the longitudinal support column is connected to the outlet pipe 23b. Beneficial effects: By adopting the technical solution of this utility model, a spray deodorization device is added to the end of the exhaust gas discharge of the purification system in the existing workshop, which can further purify and remove the small amount / trace amount of odor remaining in the exhaust gas, thus strengthening environmental protection.

[0020] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention. Those skilled in the art, under the guidance of the present invention, can make various similar representations without departing from the spirit and claims of the present invention, and such modifications all fall within the protection scope of the present invention.

Claims

1. A system for purifying exhaust gas and removing odors from the ambient air of a sludge drying workshop, comprising a purified exhaust gas discharge pipe (1), wherein the purified exhaust gas discharge pipe (1) is vertically arranged, and the upper end of the purified exhaust gas discharge pipe (1) is an exhaust gas outlet, characterized in that: It also includes a water supply module (2) and a spray module (3), wherein the spray module (3) is disposed inside the purified exhaust gas discharge pipe (1) and the spray module (3) is close to the upper outlet of the purified exhaust gas discharge pipe (1); The spray module (3) includes a water distribution network (31) and a plurality of nozzles (32) installed on the water distribution network (31). The nozzles (32) have their nozzle outlets facing downwards. The water supply module (2) supplies water to the water distribution network (31) through a pipeline.

2. The sludge drying workshop ambient air purification and exhaust gas deodorization system according to claim 1, characterized in that: The water supply module (2) includes a water tank (21) and a deodorant dosing tank (22). The upper part of the water tank (21) is connected to an inlet pipe (23a), and the lower part of the water tank (21) is connected to an outlet pipe (23b). The end of the outlet pipe (23b) is connected to the water distribution network (31), and a liquid delivery pump (24) is installed on the outlet pipe (23b). The outlet of the deodorant dosing tank (22) is connected to the water tank (21).

3. The sludge drying workshop ambient air purification and exhaust gas deodorization system according to claim 2, characterized in that: The deodorant dosing tank (22) is installed above the water tank (21). The lower part of the deodorant dosing tank (22) is provided with a drug output pipe (25), which is connected to the top of the water tank (21). A dosing solenoid valve (26) is installed on the drug output pipe (25). The deodorant dosing tank (22) has a transparent liquid level observation window on its wall and a tank cover on its top.

4. The sludge drying workshop ambient air purification and exhaust gas deodorization system according to claim 3, characterized in that: The water tank (21) is equipped with a mixing hopper (27), with the large end of the mixing hopper (27) facing upward and the small end facing downward; The mixing hopper (27) is located below the water inlet pipe (23a), and the water from the water inlet pipe (23a) and the medicine from the medicine output pipe (25) both fall into the mixing hopper (27) and mix.

5. The sludge drying workshop ambient air purification and exhaust gas deodorization system according to claim 4, characterized in that: The inner wall of the water tank (21) is provided with several support blocks (28), the edge of the mixing hopper (27) rests on the support blocks (28), and the lower end of the mixing hopper (27) is provided with an extended vortex tube (29).

6. The sludge drying workshop ambient air purification and exhaust gas deodorization system according to claim 2, 3, 4 or 5, characterized in that: The water tank (21) is also equipped with a float level switch, which is used to control the water inlet pipe (23a) to supply water to the water tank (21).

7. The sludge drying workshop ambient air purification and exhaust gas deodorization system according to claim 1, characterized in that: The purified exhaust pipe (1) includes a booster pipe (11), an expansion pipe (12), an extension pipe (13), and a closing pipe (14). The heightening tube (11) and the extension tube (13) are both vertically arranged. The heightening tube (11) and the extension tube (13) are both round tubes. The inner diameter of the extension tube (13) is larger than the inner diameter of the heightening tube (11). The extension tube (13) is located directly above the heightening tube (11). Both the expansion tube (12) and the closing tube (14) are frustum tubes. The small end of the expansion tube (12) is connected to the upper end of the booster tube (11). The large end of the expansion tube (12) is connected to the lower end of the extension tube (13). The upper end of the extension tube (13) is connected to the large end of the closing tube (14). The small end of the closing tube (14) faces upward to form the exhaust outlet. The water distribution network (31) is arranged inside the extension pipe (13).

8. The sludge drying workshop ambient air purification and exhaust gas deodorization system according to claim 7, characterized in that: The spray module (3) also includes a spray support frame (33), which is placed on the inner wall of the expansion pipe (12). The top of the spray support frame (33) extends upward to the upper part of the extension pipe (13), and the water distribution network (31) is fixed to the top of the spray support frame (33).

9. The sludge drying workshop ambient air purification and exhaust gas deodorization system according to claim 7, characterized in that: The lower end of the booster tube (11) is closed, and a drain pipe is provided at the lower end of the booster tube (11).

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