Utilization device for combustible waste gas of anaerobic tower

Abstract

The utility model discloses an anaerobic tower combustible waste gas utilization device which comprises a water-sealed tank, an electric air valve A, an outer guide pipe, an electric air valve B, a flange connecting pipe and an induced draft fan A. A high-altitude discharge pipe is arranged at the top of the water-sealed tank, and a top flange of the high-altitude discharge pipe is connected with the electric air valve A; an outer guide pipe is welded outside the vertical pipe wall of the high-altitude discharge pipe in an intercommunication manner, an electric air valve A is arranged at the high-altitude discharge pipe above a water-sealed tank used for discharging waste gas at the top of the anaerobic tower, and after the electric air valve A seals a pipe orifice of the high-altitude discharge pipe, biogas mixed gas is guided into a buffer tank A and a buffer tank B by means of an induced draft fan A to be subjected to pressure buffer, and then the biogas mixed gas is discharged from the buffer tank A to the buffer tank B; and then the waste gas is led to the flowmeter by the induced draft fan B to supply gas to the combustor of the boiler, so that the waste gas of the water-sealed tank at the top of the anaerobic tower is sent to the combustor of the boiler to be combusted and utilized, and the combustible waste gas in the water-sealed tank at the top of the anaerobic tower is guided and utilized.

Description

Technical Field

[0001] The utility model relates to the technical field of anaerobic tower waste gas utilization, in particular to a device for utilizing combustible waste gas from an anaerobic tower. Background Art

[0002] The anaerobic reaction unit of the UASB anaerobic tower is an important treatment link in the sewage treatment on the market. During the anaerobic reaction treatment of sewage, this link will continuously produce a biogas mixture containing combustible gases such as CH4 and CO. For these mixed gases, technicians usually discharge this mixed gas directly into the air through the chimney of the water seal tank at the top of the anaerobic tower for treatment.

[0003] However, the waste gas discharged from the UASB anaerobic tower contains a biogas mixture of flammable gases such as CH4 and CO, which is directly discharged into the air, which will cause a waste of resources. From an environmental protection perspective, the direct discharge of these waste gases may easily cause air pollution, which is not conducive to environmental protection. Therefore, we propose a device for utilizing the combustible waste gas from the anaerobic tower. Utility Model Content

[0004] The main purpose of the utility model is to provide a device for utilizing combustible waste gas from an anaerobic tower. An electric air valve A is arranged at a high-altitude discharge pipe above a water seal tank at the top of the anaerobic tower for discharging waste gas. After the electric air valve A closes the pipe opening of the high discharge pipe, the biogas mixture is guided into a buffer tank A and a buffer tank B for pressure buffering by means of an induced draft fan A. The induced draft fan B then guides the biogas mixture to a flow meter for supplying gas to a burner of a boiler, thereby sending the waste gas from the water seal tank at the top of the anaerobic tower to the boiler burner for combustion utilization, thereby realizing the guided utilization of the combustible waste gas in the water seal tank at the top of the anaerobic tower, and can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A device for utilizing combustible waste gas from an anaerobic tower, comprising a water seal tank, an electric air valve A, an external lead pipe, an electric air valve B, a flange connecting pipe and an induced draft fan A, wherein a high altitude discharge pipe is arranged on the top of the water seal tank, and the top flange of the high altitude discharge pipe is connected to the electric air valve A, the vertical pipe wall of the high altitude discharge pipe is interconnected with the external lead pipe, and the outer pipe body of the external lead pipe is fixed with a flange plate connected to the electric air valve B by a flange, and the other end flange of the electric air valve B away from the external lead pipe is connected to the electric air valve B by a flange The pipe is interconnected with the air inlet of the induced draft fan A, and a flange elbow is flange-connected between the air outlet of the induced draft fan A and the air inlet pipe flange of the buffer tank A. The air outlet pipe flange of the buffer tank A is flange-connected with the air inlet pipe flange of the buffer tank B, and the air outlet pipe of the buffer tank B is flange-connected with the air inlet of the induced draft fan B. A flange straight pipe is flange-connected between the air outlet of the induced draft fan B and the electric air valve C, and a flowmeter is flange-connected at the flange at the other end of the electric air valve C away from the flange straight pipe.

[0007] Furthermore, the air inlet of the induced draft fan A is locked with a cover plate by bolts, and the outer plate of the cover plate is interconnected with a welded flange head pipe A, the air outlet of the induced draft fan A is locked with a frame plate by bolts, and the middle part of the frame plate is interconnected with a welded flange head pipe B, and the flange head pipe A and the flange head pipe B have welded flanges outside the pipe bodies, and the structures of the induced draft fan A and the induced draft fan B are the same;

[0008] By adopting the above technical scheme, the air inlets of induced draft fans A and B can be flange-connected with the cover plate of welded flange head pipe A and the flange plates of other pipes in combination with bolt structures. Similarly, the air outlets of induced draft fans A and B can be flange-connected with the frame plate of welded flange head pipe B and the flange plates of other pipes in combination with bolt structures.

[0009] Furthermore, the air inlet of the induced draft fan A is connected to the flange of the flange connecting pipe by a flange head pipe A outside the cover plate, and the flange of the flange connecting pipe is connected to the flange of the electric air valve B by a flange body flange at the other end;

[0010] By adopting the above technical solution, the air inlet of the induced draft fan A is flange-connected and interconnected by welding the cover plate of the flange head pipe A and the flange plate of the flange connecting pipe with the bolt structure, and the flange plate of the other end of the flange connecting pipe is flange-connected and interconnected with the flange plate of the electric air valve B.

[0011] Furthermore, the air outlet of the induced draft fan A is connected with the flange of the flange elbow by means of a flange head pipe B outside the frame plate;

[0012] By adopting the above technical solution, the induced draft fan A can be connected with the flange elbow by means of the frame plate with the flange head pipe B.

[0013] Furthermore, the air inlet of the induced draft fan B is connected to the outlet pipe flange of the buffer tank B by means of a flange head pipe A outside the cover plate;

[0014] By adopting the above technical solution, the air inlet of the induced draft fan B is connected to the flange of the outlet pipe of the buffer tank B by welding the cover of the flange head pipe A to communicate with each other.

[0015] Furthermore, the air outlet of the induced draft fan B is connected to the flange of the flange straight pipe by a flange head pipe B outside the frame plate, and the flange of the other end of the flange straight pipe is connected to the flange of the electric air valve C by a flange.

[0016] By adopting the above technical solution, the air outlet of the induced draft fan B is connected to the flange of the flange straight pipe through the frame plate with the flange head pipe B, and the flange straight pipe can be connected to the electric air valve C through the flange.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model arranges an electric air valve A at the high-altitude discharge pipe above the water seal tank for discharging waste gas at the top of the anaerobic tower, and after the electric air valve A closes the pipe opening of the high discharge pipe, the induced draft fan A guides the biogas mixture into the buffer tank A and the buffer tank B for pressure buffering, and then the induced draft fan B guides the biogas mixture to the flow meter to supply gas to the burner of the boiler, thereby sending the waste gas from the water seal tank at the top of the anaerobic tower to the boiler burner for combustion and utilization, thereby realizing the guiding and utilization of the combustible waste gas in the water seal tank at the top of the anaerobic tower;

[0019] The utility model changes the direct discharge of biogas mixture containing combustible gases such as CH4 and CO from high altitude into a boiler for combustion, thereby achieving resource integration and reuse, avoiding resource waste, reducing boiler fuel gas consumption to a certain extent, lowering production costs, avoiding air pollution caused by anaerobic tower gas emissions, and ensuring environmental safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a schematic diagram of the overall structure of a device for utilizing combustible waste gas from an anaerobic tower.

[0021] Figure 2 The utility model is a schematic diagram of the disassembly of the induced draft fan, the cover plate and the frame plate of the anaerobic tower combustible waste gas utilization device.

[0022] In the figure: 1. Water seal tank; 2. High altitude discharge pipe; 3. Electric air valve A; 4. External duct; 5. Electric air valve B; 6. Flange connecting pipe; 7. Draft fan A; 8. Flange elbow; 9. Buffer tank A; 10. Buffer tank B; 11. Draft fan B; 12. Flange straight pipe; 13. Electric air valve C; 14. Flow meter; 15. Cover plate; 16. Flange head pipe A; 17. Frame plate; 18. Flange head pipe B. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] like Figure 1-2 As shown, a device for utilizing combustible waste gas from an anaerobic tower includes a water seal tank 1, an electric air valve A3, an external lead pipe 4, an electric air valve B5, a flange connecting pipe 6 and an induced draft fan A7. A high altitude discharge pipe 2 is arranged on the top of the water seal tank 1, and the top flange of the high altitude discharge pipe 2 is connected to the electric air valve A3. The vertical pipe wall of the high altitude discharge pipe 2 is interconnected and welded with an external lead pipe 4, and the outer pipe body of the external lead pipe 4 is fixed with a flange plate connected with the electric air valve B5. The flange of the other end of the electric air valve B5 away from the external lead pipe 4 is connected with the flange connecting pipe 6. It is interconnected with the air inlet of the induced draft fan A7, and a flange elbow 8 is flange-connected between the air outlet of the induced draft fan A7 and the air inlet pipe flange of the buffer tank A9, the air outlet pipe flange of the buffer tank A9 is flange-connected to the air inlet flange of the buffer tank B10, and the air outlet pipe of the buffer tank B10 is flange-connected to the air inlet of the induced draft fan B11, a flange straight pipe 12 is flange-connected between the air outlet of the induced draft fan B11 and the electric air valve C13, and a flowmeter 14 is flange-connected at the flange at the other end of the electric air valve C13 away from the flange straight pipe 12.

[0025] The air inlet of the induced draft fan A7 is bolted with a cover plate 15, and the outer plate of the cover plate 15 is interconnected with a welded flange head pipe A16. The air outlet of the induced draft fan A7 is bolted with a frame plate 17, and the middle of the frame plate 17 is interconnected with a welded flange head pipe B18. The flanges on the outer tube bodies of the flange head pipe A16 and the flange head pipe B18 are welded. The structures of the induced draft fan A7 and the induced draft fan B11 are the same.

[0026] By adopting the above technical solution, the air inlets of the induced draft fans A7 and B11 can be flange-connected with the flanges of other pipelines by means of the cover plate 15 of the welded flange head pipe A16 and the bolt structure. Similarly, the air outlets of the induced draft fans A7 and B11 can be flange-connected with the flanges of other pipelines by means of the frame plate 17 of the welded flange head pipe B18 and the bolt structure.

[0027] The air inlet of the induced draft fan A7 is connected to the flange of the flange connecting pipe 6 by the flange head pipe A16 outside the cover plate 15, and the flange of the flange connecting pipe 6 is connected to the flange of the electric air valve B5 by the flange body flange at the other end;

[0028] By adopting the above technical solution, the air inlet of the induced draft fan A7 is flange-connected and interconnected with the cover plate 15 of the welded flange head pipe A16 and the flange plate of the flange connecting pipe 6 through a bolt structure, and the flange plate of the other end of the flange connecting pipe 6 is flange-connected and interconnected with the flange plate of the electric air valve B5.

[0029] The air outlet of the induced draft fan A7 is connected to the flange of the flange elbow 8 by the flange head pipe B18 outside the frame plate 17;

[0030] By adopting the above technical solution, the induced draft fan A7 can be connected with the flange elbow 8 by flange connection with the frame plate 17 having the flange head pipe B18 to communicate with each other.

[0031] The air inlet of the induced draft fan B11 is connected to the outlet pipe flange of the buffer tank B10 by means of a flange head pipe A16 outside the cover plate 15;

[0032] By adopting the above technical solution, the air inlet of the induced draft fan B11 is connected to the air outlet flange of the buffer tank B10 by welding the cover plate 15 of the flange head pipe A16.

[0033] The air outlet of the induced draft fan B11 is connected to the flange of the flange straight pipe 12 by the flange head pipe B18 outside the frame plate 17, and the flange of the other end of the flange straight pipe 12 is connected to the flange of the electric air valve C13.

[0034] By adopting the above technical solution, the air outlet of the induced draft fan B11 is flange-connected and interconnected with the flange straight pipe 12 through the frame plate 17 with the flange head pipe B18, and the flange straight pipe 12 can be flange-connected and interconnected with the electric air valve C13.

[0035] It should be noted that the utility model is a device for utilizing combustible waste gas from an anaerobic tower. An electric air valve A3 is arranged at a high-altitude discharge pipe 2 above a water seal tank 1 for discharging waste gas at the top of the anaerobic tower for sealing. Then, the high-altitude discharge pipe 2 is connected to the electric air valve B5 through an external guide pipe 4. The electric air valve B5 is connected to the induced draft fan A7 through a flange connecting pipe 6. At the same time, the induced draft fan A7 is connected to the buffer tank A9 through a flange elbow 8. After the buffer tank A9 is connected in series with the buffer tank B10, the buffer pipe B10 is connected to the flange straight pipe 12, the electric air valve C13 and the flow meter 14 through the induced draft fan B11 in sequence. When the anaerobic tower waste gas is intercepted by the electric air valve A3 at the high-altitude discharge pipe 2 of the water seal tank 1, the waste gas is drawn from the external guide pipe 4 along the electric air valve B5 and the flange connecting pipe 6 by the induced draft fan A7, thereby accelerating along the flange elbow 8. The exhaust gas after buffering at the buffer tank A9 can go backwards along the buffer tank B10, the induced draft fan B11 and the electric air valve C13 to enter the flow meter 14. The flow meter 14 can be flange-connected to the gas supply pipeline of the boiler burner. Then, the biogas mixture discharged from the water seal tank 1 at the top of the anaerobic tower is introduced into the burner of the boiler for combustion. The electric actuators of the electric air valve A3, the electric air valve B5 and the electric air valve C13 can be connected to an external controller for control. The electric air valve A3 can control the gas discharge at the high-altitude discharge pipe 2, while the electric air valve B5 can control the biogas mixture before entering the buffer tank A9, and the electric air valve C13 can control whether the biogas mixture at the buffer tank B10 is discharged, thereby realizing the guided utilization of the combustible exhaust gas in the water seal tank at the top of the anaerobic tower.

[0036] It should be noted that the utility model is a device for utilizing combustible waste gas from an anaerobic tower. The components in the utility model are all components known to those skilled in the art, and their structures and principles are all known to those skilled in the art through technical manuals or conventional experimental methods.

[0037] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A device for utilizing combustible waste gas from an anaerobic tower, comprising a water seal tank (1), characterized in that: It also includes an electric air valve A (3), an external lead pipe (4), an electric air valve B (5), a flange connecting pipe (6) and an induced draft fan A (7). The top of the water seal tank (1) is provided with a high altitude discharge pipe (2), and the top flange of the high altitude discharge pipe (2) is connected to the electric air valve A (3). The vertical pipe wall of the high altitude discharge pipe (2) is welded to the external lead pipe (4), and the external pipe body of the external lead pipe (4) is fixed with a flange plate which is flange-connected to the electric air valve B (5). The flange of the other end of the electric air valve B (5) away from the external lead pipe (4) is connected to the air inlet of the induced draft fan A (7) by means of a flange connecting pipe (6). The ports are interconnected, and a flange elbow (8) is flange-connected between the air outlet of the induced draft fan A (7) and the air inlet pipe flange of the buffer tank A (9), the air outlet pipe flange of the buffer tank A (9) is flange-connected to the air inlet pipe flange of the buffer tank B (10), and the air outlet pipe of the buffer tank B (10) is flange-connected to the air inlet of the induced draft fan B (11), a flange straight pipe (12) is flange-connected between the air outlet of the induced draft fan B (11) and the electric air valve C (13), and a flow meter (14) is flange-connected at the flange of the other end of the electric air valve C (13) away from the flange straight pipe (12).

2. The device for utilizing flammable waste gas from an anaerobic tower according to claim 1, characterized in that: The air inlet of the induced draft fan A (7) is locked with a cover plate (15) by bolts, and the outer plate of the cover plate (15) is interconnected and welded with a flange head pipe A (16). The air outlet of the induced draft fan A (7) is locked with a frame plate (17) by bolts, and the middle part of the frame plate (17) is interconnected and welded with a flange head pipe B (18). The flanges of the flange head pipe A (16) and the flange head pipe B (18) are welded outside the pipe bodies. The structures of the induced draft fan A (7) and the induced draft fan B (11) are the same.

3. The device for utilizing flammable waste gas from an anaerobic tower according to claim 2, characterized in that: The air inlet of the induced draft fan A (7) is connected to the flange of the flange connecting pipe (6) by means of a flange head pipe A (16) outside the cover plate (15), and the flange of the flange connecting pipe (6) at the other end is connected to the flange of the electric air valve B (5).

4. The device for utilizing flammable waste gas from an anaerobic tower according to claim 3, characterized in that: The air outlet of the induced draft fan A (7) is connected to the flange of the flange elbow (8) via a flange head pipe B (18) outside the frame plate (17).

5. The device for utilizing flammable waste gas from an anaerobic tower according to claim 2, characterized in that: The air inlet of the induced draft fan B (11) is connected to the air outlet flange of the buffer tank B (10) via a flange head pipe A (16) outside the cover plate (15).

6. The device for utilizing flammable waste gas from an anaerobic tower according to claim 5, characterized in that: The air outlet of the induced draft fan B (11) is connected to the flange of the flange straight pipe (12) by means of a flange head pipe B (18) outside the frame plate (17), and the other end of the flange straight pipe (12) is connected to the flange of the electric air valve C (13).

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