Sedimentation tower for recycling and discharging sulfur mud

Abstract

The utility model relates to the technical field of sulfur mud recovery, and particularly discloses a settling tower for recovering and discharging sulfur mud. The settling tower for recycling and discharging the sulfur mud comprises a tower body and is characterized in that a conveying pipe communicated with a water inlet is mounted in the tower body, and downward spray heads are uniformly distributed on the conveying pipe; a filter screen, a preheating pipe, a radiating pipe and a slag collecting funnel are sequentially arranged in the tower body from top to bottom, an air inlet located below the radiating pipe is formed in the side wall of the tower body, and the air inlet is communicated with an air pump. The sulfur mud waste water recycling device is simple in structure and reasonable in design, evaporation recycling and precipitation recycling of sulfur mud waste water are achieved through the tower body structure, sulfur-containing waste gas in the sulfur mud waste water is not directly discharged into air, green and environment-friendly recycling treatment is achieved, multi-form separation of waste water and sulfur mud is achieved through cascade utilization of preheating, and the recycling effect is good. The treatment efficiency is effectively improved; and energy conservation and emission reduction are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of sulfur sludge recovery technology, and in particular to a sedimentation tower for sulfur sludge recovery and discharge. Background Technology

[0002] Sulfur mud recovery and sedimentation equipment is mainly used to treat wastewater or waste liquid containing sulfur mud. Through processes such as sedimentation and filtration, sulfur mud is separated from the wastewater for recycling and utilization. This equipment is widely used in industries such as chemical, environmental protection, and pharmaceutical, and is of great significance, especially in the fields of wastewater treatment and resource recycling.

[0003] In the prior art, sulfur sludge recovery sedimentation devices typically consist of the following parts: (1) an inlet pipe, used to introduce wastewater containing sulfur sludge into the device; (2) a sedimentation tank, which is the core part of the device, used to contain wastewater and carry out the sedimentation process. The shape and size of the sedimentation tank are usually designed according to actual needs to ensure the sedimentation effect; (3) a filter structure, located near the outlet of the sedimentation tank, used to filter the wastewater to remove finer particles and impurities; (4) an outlet pipe, used to discharge clean water from the device; and (5) a discharge port, located at the bottom of the sedimentation tank, used to discharge the settled sulfur sludge. In addition, some advanced sulfur sludge recovery sedimentation devices are also equipped with an automated control system and a sludge scraping device to improve sedimentation efficiency and reduce labor intensity.

[0004] While existing sulfur sludge recovery and sedimentation devices have achieved significant results, they neglect the treatment of unabsorbed hydrogen sulfide and other waste gases in the sulfur sludge waste liquid, resulting in the continuous volatilization of waste gases during the sedimentation process. With increasing environmental awareness and growing resource scarcity, the application prospects of sulfur sludge recovery and sedimentation devices are becoming increasingly broad. Therefore, more efficient, intelligent, and environmentally friendly structural improvements, such as increasing sedimentation efficiency, adding remote monitoring, and reducing waste gas emissions, are the development direction for this device. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, this utility model provides a sedimentation tower with a reasonable structure, green and environmentally friendly features, and high processing efficiency for the recovery and discharge of sulfur sludge.

[0006] This utility model is achieved through the following technical solution:

[0007] A sedimentation tower for sulfur sludge recovery and discharge includes a tower body, an inlet at the upper end of the side wall, an outlet at the lower end of the side wall, an air outlet at the top, and a slag discharge outlet at the bottom. The tower body is characterized by: a conveying pipe connected to the inlet installed inside, with downward-facing spray nozzles evenly distributed on the conveying pipe; a filter screen, a preheating pipe, a heat dissipation pipe, and a slag collection funnel arranged sequentially from top to bottom inside the tower body; the filter screen being horizontally mounted on the preheating pipe; the heat dissipation pipes being distributed in a U-shape within the cross-section of the tower body, and heat dissipation fins installed on the heat dissipation pipes; and an agitator mounted inside the tower body above the slag collection funnel; and an air inlet located below the heat dissipation pipes on the side wall of the tower body, connected to an air pump.

[0008] This invention abandons the conventional cylindrical / trough-shaped filter structure and adopts a tower structure to treat wastewater containing sulfur mud by sedimentation. In view of the airtightness of the tower structure, the tower is heated internally to heat and evaporate the wastewater containing sulfur mud for collection. Combined with filtration and collection, this achieves multi-level utilization of wastewater and recovery of sulfur-containing waste gas, improves filtration efficiency, and ensures purified emission of waste gas.

[0009] The preferred technical solution of this utility model is as follows:

[0010] The conveying pipes are arranged in a U-shape within the cross-section of the tower body, and water outlets are evenly distributed on the bottom surface of the conveying pipes. Spray heads are installed on the water outlets. The sulfur-containing sludge wastewater, after preliminary filtration, enters the conveying pipe through the inlet and is released into the tower body through the spray heads. Since the water outlets of the corresponding spray heads are evenly distributed on the conveying pipes, the sprayed wastewater can fully cover the cross-section of the tower body, achieving uniform spraying of the wastewater.

[0011] The air inlet and outlet of the heat dissipation pipe are located on opposite sides of the tower body. A heat source inlet and a heat source outlet are provided on the side wall of the tower body. The heat source inlet is connected to the air inlet of the heat dissipation pipe, the air outlet of the heat dissipation pipe is connected to the inlet of the preheating pipe, and the outlet of the preheating pipe is connected to the heat source outlet. The heat source is transported from bottom to top in the tower body. It first passes through the heat dissipation pipe for preliminary heat dissipation. The low-temperature heat source after heat dissipation enters the preheating pipe to preheat the sulfur-containing sludge wastewater that is sprayed down.

[0012] The heat sink has a conical structure and uniformly dispersed strip-shaped holes. The conical structure of the heat sink maximizes its contact area with the sprayed wastewater, effectively increasing the heat exchange efficiency. The strip-shaped holes are designed for the downward discharge of the wastewater after spraying.

[0013] The agitator is fixed to the central axis of the tower body by a bracket parallel to the cross-section of the tower body. An annular collection trough is installed on the bracket and is close to the inner wall of the tower body. The collection trough is provided with a drain port connected to the water outlet, and a flap is provided on the bottom surface of the collection trough. Since the agitator is located below the preheating pipe and the heat dissipation pipe, some of the wastewater after heat exchange will condense through the tower wall, and the conical heat dissipation fins will transport most of the wastewater downward from all sides. Therefore, the collection trough can be used to collect most of the falling wastewater, thereby realizing the collection and sedimentation of wastewater. The settled wastewater is discharged from the drain port, and the waste residue is discharged downward from the flap at the bottom of the collection trough.

[0014] The top of the agitator is supported by a protective cover. Two shovels are symmetrically installed on the rotating shaft of the agitator. The shovels have an arc-shaped structure and their lower ends are attached to the inner wall of the slag collection funnel. The protective cover is used to protect the agitator from falling water. The shovels on the rotating shaft are used to drive the sulfur mud on the inner wall of the slag collection funnel to increase the falling speed of the sulfur mud.

[0015] The slag collection funnel is located at the bottom of the tower body, and a slag discharge port is provided at the bottom end of the slag collection funnel to discharge the precipitated sulfur mud from the tower body.

[0016] This utility model has a simple structure and reasonable design. It utilizes the tower structure to realize the evaporation and sedimentation recovery of sulfur mud wastewater, so that the sulfur-containing waste gas in the sulfur mud wastewater is not directly discharged into the air, thus achieving green and environmentally friendly recycling treatment. Furthermore, through the tiered utilization of preheating, it realizes the multi-form separation of wastewater and sulfur mud, effectively improving the treatment efficiency and contributing to energy conservation and emission reduction. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the installation structure of the conveying pipe / preheating pipe / heat dissipation pipe of this utility model;

[0020] Figure 3 This is a schematic diagram of the installation structure of the stirrer of this utility model.

[0021] In the diagram, 1 is the tower body, 2 is the water inlet, 3 is the water outlet, 4 is the air outlet, 5 is the slag discharge outlet, 6 is the conveying pipe, 7 is the spray head, 8 is the filter screen, 9 is the preheating pipe, 10 is the heat dissipation pipe, 11 is the slag collection funnel, 12 is the heat dissipation fin, 13 is the agitator, 14 is the air inlet, 15 is the air pump, 16 is the strip hole, 17 is the support, 18 is the collection tank, 19 is the flap, 20 is the protective cover, 21 is the sludge scraper, 22 is the heat source inlet, and 23 is the heat source outlet. Detailed Implementation

[0022] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] The present invention will now be described in detail with reference to the accompanying drawings: This embodiment includes a tower body 1, with a water inlet 2 at the upper end of the side wall of the tower body 1, a water outlet 3 at the lower end of the side wall, an air outlet 4 at the top of the tower body 1, and a slag discharge outlet 5 at the bottom. A conveying pipe 6 connected to the water inlet 2 is installed inside the tower body 1, and downward spray heads 7 are evenly distributed on the conveying pipe 6. From top to bottom, a filter screen 8, a preheating pipe 9, a heat dissipation pipe 10, and a slag collection funnel 11 are arranged inside the tower body 1. The filter screen 8 is horizontally mounted on the preheating pipe 9, the heat dissipation pipe 10 is distributed in a U-shape in the cross-section of the tower body 1, and heat dissipation fins 12 are installed on the heat dissipation pipe 10. An agitator 13 is mounted inside the tower body 1 above the slag collection funnel 11. An air inlet 14 located below the heat dissipation pipe 10 is opened on the side wall of the tower body 1, and an air pump 15 is connected to the air inlet 14.

[0025] In a further preferred embodiment, the conveying pipes 6 are distributed in a U-shape within the cross-section of the tower body 1, and water outlets are evenly distributed on the bottom surface of the conveying pipes 6, with spray heads 7 installed on the water outlets; the air inlet and air outlet of the heat dissipation pipe 10 are located on opposite sides of the tower body 1, and a heat source inlet 22 and a heat source outlet 23 are provided on the side wall of the tower body 1. The heat source inlet 22 is connected to the air inlet of the heat dissipation pipe 10, the air outlet of the heat dissipation pipe 10 is connected to the inlet of the preheating pipe 9, and the outlet of the preheating pipe 9 is connected to the heat source outlet 23; the heat dissipation fins 12 have a conical structure, and uniformly dispersed strip holes 1 are provided on the heat dissipation fins 12. 6; The agitator 13 is fixed on the central axis of the tower body 1 by a bracket 17 parallel to the cross-section of the tower body 1. An annular collection trough 18 is installed on the bracket 17 and is close to the inner wall of the tower body 1. The collection trough 18 is provided with a drain port connected to the water outlet 3. A flap 19 is provided at the bottom of the collection trough 18. A protective cover 20 is supported on the top of the agitator 13. Two shovels 21 are symmetrically installed on the rotating shaft of the agitator 13. The shovels 21 have an arc-shaped structure and their lower ends are close to the inner wall of the slag collection funnel 11. The slag collection funnel 11 is located at the bottom of the tower body 1. A slag discharge port 5 is provided at the bottom end of the slag collection funnel 11.

[0026] The operating principle of this utility model is as follows:

[0027] The heat source inlet 22 of the tower body 1 is connected to the boiler flue gas waste heat utilization pipeline. The boiler flue gas enters the heat dissipation pipe 10 and is transported from bottom to top. As heat exchange proceeds, the temperature gradually decreases. The cooled boiler flue gas enters the preheating pipe 9 through the connecting pipe and is finally discharged from the tower body 1 through the heat source outlet 23 connected to the end of the preheating pipe 9. The air pump 15 supplies air into the tower body 1 through the air inlet 14 to increase the air flow and heat conduction in the tower body, and carries the water vapor and sulfur-containing waste gas out of the tower body 1. The water inlet 2 is connected to the conveying pipeline of sulfur-containing sludge wastewater. Before the water inlet, the sulfur-containing sludge wastewater has been filtered by a preliminary filter to remove large particles of sludge. The sulfur-containing sludge wastewater entering the tower body 1 is sprayed outward through the conveying pipe 6 and the spray head 7, covering the entire cross-section of the tower body 1. It falls downward through the filter screen 8. Since the filter screen 8 is mounted on the preheating pipe 9, it is warm due to heat conduction. Due to the mesh setting, the contact area between the filter screen 8 and the sulfur-containing sludge wastewater is large, so the sulfur-containing sludge wastewater is initially heated and then preheated by the preheating pipe 9.

[0028] The preheated sulfur-containing sludge wastewater falls onto the heat sink 12 above the heat sink 9. The heat sink 12, also subject to heat conduction, further heats the wastewater. Additionally, the wastewater flows on the heat sink 12, increasing the heat conduction time. Sulfur-containing waste gas and water vapor in the wastewater are evaporated and discharged from the outlet 4 at the top of the tower by the air force of the air pump 15. The discharged wastewater then enters the waste gas recovery system through the waste gas recovery pipe. The sulfur-containing sludge wastewater passes through the bottom of the heat sink 12 or through the strip holes 16 on the heat sink 12, falling onto the heat sink 10 for further heat exchange, thus increasing the evaporation rate of the wastewater. Unevaporated wastewater falls directly into the slag collection funnel 11, while most of the unevaporated wastewater, influenced by the conical structure, falls from the bottom of the heat sink 12 into the collection tank 18 on the support 17.

[0029] The sulfur-containing sludge wastewater settles in the collection tank 18. The clear wastewater after settling is discharged from the tower body 1 through the connection between the inlet and the outlet 3, and enters the wastewater collection device for unified recycling and treatment through the conveying pipeline. Due to the fluidity of the sulfur-containing sludge wastewater, the sludge after settling accumulates at the bottom of the collection tank 18. After reaching the pressure that the flap 19 can withstand, the flap 19 rotates, and the sludge is discharged downward to the sludge collection funnel 11.

[0030] Since the waste entering the slag collection funnel 11 is a mud-water mixture, which is fluid, it will be collected downwards along the funnel-shaped sidewall. In order to increase the fluidity of the mud-water mixture, the agitator 13 above the slag collection funnel 11 is started to clean it at regular intervals. The mud scraper 21 is attached to the sidewall of the slag collection funnel 11 and will also generate vibration during rotation to remove the sludge adhering to the sidewall of the slag collection funnel 11 and prevent the accumulation of sludge on the sidewall of the slag collection funnel 11.

[0031] Furthermore, to prevent the agitator 13 from being attacked or corroded by wastewater, this utility model provides a protective cover 20 on the agitator 13 to increase its operational safety and extend its service life.

[0032] The sedimentation tower disclosed in this embodiment realizes the evaporation and sedimentation recovery of sulfur mud wastewater, so that the sulfur-containing waste gas in the sulfur mud wastewater is not directly discharged into the air, realizing green and environmentally friendly recycling treatment, saving energy and reducing emissions, and effectively improving treatment efficiency.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A sedimentation tower for sulfur sludge recovery and discharge, comprising a tower body (1), an inlet (2) provided at the upper end of the side wall of the tower body (1), an outlet (3) provided at the lower end of the side wall, an air outlet (4) provided at the top of the tower body (1), and a slag discharge outlet (5) provided at the bottom, characterized in that: The tower body (1) is equipped with a conveying pipe (6) connected to the water inlet (2), and downward spray heads (7) are evenly distributed on the conveying pipe (6); the tower body (1) is equipped with a filter screen (8), a preheating pipe (9), a heat dissipation pipe (10) and a slag collection funnel (11) from top to bottom. The filter screen (8) is horizontally mounted on the preheating pipe (9), the heat dissipation pipe (10) is distributed in a U-shape in the cross-section of the tower body (1), and heat dissipation fins (12) are installed on the heat dissipation pipe (10). An agitator (13) is mounted on the tower body (1) above the slag collection funnel (11); an air inlet (14) is opened on the side wall of the tower body (1) below the heat dissipation pipe (10), and an air pump (15) is connected to the air inlet (14).

2. The settling tower for sulfur sludge recovery and discharge as described in claim 1, characterized in that: The conveying pipe (6) is distributed in a U-shape within the cross-section of the tower body (1), and water outlets are evenly provided on the bottom surface of the conveying pipe (6), with spray heads (7) installed on the water outlets.

3. The settling tower for sulfur sludge recovery and discharge as described in claim 1, characterized in that: The air inlet and outlet of the heat dissipation pipe (10) are located on opposite sides of the tower body (1). A heat source inlet (22) and a heat source outlet (23) are provided on the side wall of the tower body (1). The heat source inlet (22) is connected to the air inlet of the heat dissipation pipe (10), the air outlet of the heat dissipation pipe (10) is connected to the inlet of the preheating pipe (9), and the outlet of the preheating pipe (9) is connected to the heat source outlet (23).

4. The settling tower for sulfur sludge recovery and discharge as described in claim 1, characterized in that: The heat sink (12) has a conical structure and is provided with uniformly dispersed strip holes (16).

5. The settling tower for sulfur sludge recovery and discharge as described in claim 1, characterized in that: The agitator (13) is fixed on the central axis of the tower body (1) by a bracket (17) parallel to the cross-section of the tower body (1). An annular collection trough (18) is installed on the bracket (17) and is close to the inner wall of the tower body (1). A drain port connected to the water outlet (3) is provided on the collection trough (18). A flap (19) is provided at the bottom of the collection trough (18).

6. The settling tower for sulfur sludge recovery and discharge as described in claim 1 or 5, characterized in that: The top of the agitator (13) is supported by a protective cover (20). Two mud scrapers (21) are symmetrically installed on the rotating shaft of the agitator (13). The mud scrapers (21) have an arc-shaped structure and their lower ends are attached to the inner wall of the slag collection funnel (11).

7. The settling tower for sulfur sludge recovery and discharge as described in claim 1, characterized in that: The slag collection funnel (11) is located at the bottom of the tower body (1), and a slag discharge port (5) is provided at the bottom end of the slag collection funnel (11).

Images