Anaerobic reactor exhaust system

Abstract

The utility model discloses an anaerobic reactor exhaust system includes: anaerobic reaction jar and gas storage tank, the anaerobic reaction jar has first gas outlet and overpressure gas outlet, first gas outlet is connected with marsh gas pipeline through first pipeline, be equipped with safety valve on overpressure gas outlet, when the pressure in anaerobic reaction jar is greater than or equal to first preset value, safety valve opens, the import of gas storage tank is connected with the import of safety valve through second pipeline, the outlet of gas storage tank is connected with marsh gas pipeline through third pipeline. Therefore, according to the anaerobic reactor exhaust system of the utility model exhausts safely and can reduce workload.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to an anaerobic reactor exhaust system. Background Technology

[0002] Anaerobic reactors produce biogas during operation. To ensure reactor safety, a water seal pressure protection device is installed on the top of the tank. When the gas pressure inside the tank exceeds the designed safety value, the protection device is triggered, releasing the pressure by venting the overpressured gas. The vented gas contains hazardous gases such as biogas and hydrogen sulfide. Related technologies employ high-altitude emission methods, directing the waste gas to a higher elevation above the ground for atmospheric diffusion to dilute the concentration. However, this method still poses environmental impacts. Operators still face exposure risks when operating near the emission outlet, and there is a risk of deflagration if the gas encounters an ignition source during diffusion. Utility Model Content

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention provide an anaerobic reactor exhaust system.

[0004] The anaerobic reactor exhaust system of this utility model embodiment includes:

[0005] An anaerobic reactor has a first gas outlet and an overpressure gas outlet. The first gas outlet is connected to a biogas pipeline through a first pipeline. The overpressure gas outlet is equipped with a safety valve. When the pressure inside the anaerobic reactor is greater than or equal to a first preset value, the safety valve opens.

[0006] A gas storage tank, the inlet of which is connected to the inlet of the safety valve via a second pipeline, and the outlet of which is connected to the biogas pipeline via a third pipeline.

[0007] Therefore, the anaerobic reactor exhaust system according to the present invention is safe to exhaust and can reduce workload.

[0008] In some embodiments, the first gas outlet and the overpressure gas outlet are located at the top of the anaerobic reactor, and the safety valve is located at the top of the anaerobic reactor.

[0009] In some embodiments, each of the first pipeline, the second pipeline, and the third pipeline is provided with an on / off valve.

[0010] In some embodiments, there are multiple gas storage tanks, and both the second pipeline and the third pipeline are multiple;

[0011] The safety valve outlet is provided with a fourth pipeline, which is connected to multiple gas storage tanks through multiple second pipelines. The biogas pipeline is also connected to multiple gas storage tanks through multiple second pipelines.

[0012] In some embodiments, each of the gas storage tanks is equipped with a pressure monitoring device, which is electrically connected to the on / off valves on the second pipeline and the third pipeline.

[0013] In some embodiments, the on / off valves on the second and third pipelines are pneumatically controlled valves.

[0014] In some embodiments, the third pipeline is provided with an air supply device.

[0015] In some embodiments, the gas delivery device includes at least one of a blower, a gas booster pump, and a compressor.

[0016] In some embodiments, the pressure inside the anaerobic reactor is less than or equal to 5 kPa. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an anaerobic reactor exhaust system according to an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the anaerobic reactor exhaust system according to another embodiment of the present invention.

[0019] Attached reference numerals: 1. Anaerobic reactor, 2. First gas outlet, 3. Overpressure gas outlet, 4. First pipeline, 5. Biogas pipeline, 6. Safety valve, 7. Gas storage tank, 8. Second pipeline, 9. Third pipeline, 10. Fourth pipeline, 11. Gas delivery device, 12. On / off valve. Detailed Implementation

[0020] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0021] The anaerobic reactor exhaust system of this utility model is described below with reference to the accompanying drawings. For example... Figure 1 and Figure 2 As shown, the anaerobic reactor exhaust system according to an embodiment of the present invention includes an anaerobic reactor 1 and a gas storage tank 7.

[0022] The anaerobic reactor 1 has a first gas outlet 2 and an overpressure gas outlet 3. The first gas outlet 2 is connected to the biogas pipeline 5 via a first pipeline 4. The overpressure gas outlet 3 is equipped with a safety valve 6, which opens when the pressure inside the anaerobic reactor 1 is greater than or equal to a first preset value. The inlet of the gas storage tank 7 is connected to the inlet of the safety valve 6 via a second pipeline 8, and the outlet of the gas storage tank 7 is connected to the biogas pipeline 5 via a third pipeline 9. Thus, when the pressure inside the anaerobic reactor 1 is greater than or equal to the first preset value (i.e., exceeding the preset pressure), the safety valve 6 opens, allowing gas from the anaerobic reactor 1 to be sequentially introduced into the gas storage tank 7 through the safety valve 6 and the first pipeline 4. The gas stored in the gas storage tank 7 can then be introduced into the biogas pipeline 5 via the third pipeline 9, enabling the recovery and reuse of combustible gas from the gas storage tank 7.

[0023] Compared to related technologies that install a water seal pressure protection device at the top of the anaerobic reactor, the anaerobic reactor exhaust system according to this embodiment of the invention features a safety valve 6 at the overpressure outlet 3 at the top of the anaerobic reactor 1. A gas storage tank 7 connected to the safety valve 6 is also provided, allowing gas from the anaerobic reactor 1 to be stored in the gas storage tank 7 when the pressure exceeds a preset pressure, thereby improving production safety. The safety valve 6 can be used multiple times and automatically rebounds after the pressure recovers, eliminating the need for refilling after each overpressure as with a water seal, reducing workload. No waste gas is discharged under overpressure conditions, reducing the risk of poisoning, suffocation, and combustion at the emission point. The system is more automated, requiring no further operation after overpressure. Furthermore, the gas storage tank 7 has both gas storage and pressure stabilization functions. The gas storage function stores the overpressure gas from the anaerobic reactor 1, while the pressure stabilization function maintains the pressure difference between the gas and the tank under normal operating conditions, preventing accidental activation of the safety valve 6. For example, the gas storage tank 7 is constructed from a tank body with a pressure stabilizing structure.

[0024] Therefore, the anaerobic reactor exhaust system according to the present invention is safe to exhaust and can reduce workload.

[0025] In some embodiments, the pressure of the anaerobic reactor 1 is less than or equal to 5 kPa, that is, the anaerobic reactor 1 is under low internal pressure. Specifically, the anaerobic reactor 1 is a fixed-roof low internal pressure storage tank, the anaerobic reactor 1 is filled with wastewater containing anaerobic sludge, and the top of the anaerobic reactor 1 contains biogas produced by the anaerobic reaction.

[0026] like Figure 1 and Figure 2 As shown, in some embodiments, the first gas outlet 2 and the overpressure gas outlet 3 are located at the top of the anaerobic reactor 1, and the safety valve 6 is located at the top of the anaerobic reactor 1. This facilitates the discharge of gas from the anaerobic reactor 1.

[0027] In some embodiments, each of the first pipeline 4, the second pipeline 8, and the third pipeline 9 is provided with an on / off valve 12. Thus, when gas is not needed or maintenance is required, the on / off valve 12 on the corresponding pipeline can be closed, thereby preventing gas leakage.

[0028] like Figure 2 As shown, in some embodiments, there are multiple gas storage tanks 7, and multiple second pipelines 8 and third pipelines 9. A fourth pipeline 10 is provided at the outlet of the safety valve 6. The fourth pipeline 10 is connected to multiple gas storage tanks 7 via multiple second pipelines 8, and the biogas pipeline 5 is connected to multiple gas storage tanks 7 via multiple second pipelines 8. Since there are multiple gas storage tanks 7, and these tanks are connected in parallel via multiple second pipelines 8 and third pipelines 9, the on / off valve 12 on the second pipeline 8 connected to a gas storage tank 7 can be closed when a portion of the gas storage tank 7 is full. When the gas stored in a gas storage tank 7 is low, the on / off valve 12 on the third pipeline 9 connected to that gas storage tank 7 can be closed. This facilitates the introduction of combustible gas discharged from the anaerobic reactor 1 into the biogas pipeline 5.

[0029] In some embodiments, each gas storage tank 7 is equipped with a pressure monitoring device, which is electrically connected to the on / off valves 12 on the second pipeline 8 and the third pipeline 9. This allows the pressure monitoring device to be interlocked with the on / off valves 12 on the second pipeline 8 and the third pipeline 9, so that the on / off valves 12 on the second pipeline 8 and the third pipeline 9 can be opened or closed according to the gas pressure inside the gas storage tank 7.

[0030] In some embodiments, the on / off valves 12 on the second pipeline 8 and the third pipeline 9 are pneumatically controlled valves. Pneumatically controlled valves offer high safety, reducing the likelihood of gas explosions and improving overall safety.

[0031] like Figure 1 and Figure 2 As shown, in some embodiments, a gas delivery device 11 is provided on the third pipeline 9. Specifically, the gas delivery device 11 includes at least one of a blower, a gas booster pump, and a compressor. This facilitates the delivery of gas from the gas storage tank 7 to the biogas pipeline 5 and prevents gas backflow. For example, the gas delivery device 11 includes a blower.

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0037] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An anaerobic reactor exhaust system, characterized in that, include: An anaerobic reactor has a first gas outlet and an overpressure gas outlet. The first gas outlet is connected to a biogas pipeline through a first pipeline. The overpressure gas outlet is equipped with a safety valve. When the pressure inside the anaerobic reactor is greater than or equal to a first preset value, the safety valve opens. A gas storage tank, the inlet of which is connected to the inlet of the safety valve via a second pipeline, and the outlet of which is connected to the biogas pipeline via a third pipeline.

2. The anaerobic reactor exhaust system according to claim 1, characterized in that, The first gas outlet and the overpressure gas outlet are located at the top of the anaerobic reactor, and the safety valve is located at the top of the anaerobic reactor.

3. The anaerobic reactor exhaust system according to claim 1, characterized in that, Each of the first pipeline, the second pipeline, and the third pipeline is provided with an on / off valve.

4. The anaerobic reactor exhaust system according to claim 3, characterized in that, There are multiple gas storage tanks, and there are multiple second pipelines and multiple third pipelines; The safety valve outlet is provided with a fourth pipeline, which is connected to multiple gas storage tanks through multiple second pipelines. The biogas pipeline is also connected to multiple gas storage tanks through multiple second pipelines.

5. The anaerobic reactor exhaust system according to claim 4, characterized in that, Each of the gas storage tanks is equipped with a pressure monitoring device, which is electrically connected to the on / off valves on the second and third pipelines.

6. The anaerobic reactor exhaust system according to claim 5, characterized in that, The opening and closing valves on the second and third pipelines are pneumatically controlled valves.

7. The anaerobic reactor exhaust system according to claim 1, characterized in that, An air supply device is provided on the third pipeline.

8. The anaerobic reactor exhaust system according to claim 7, characterized in that, The gas delivery device includes at least one of a blower, a gas booster pump, and a compressor.

9. The anaerobic reactor exhaust system according to claim 7, characterized in that, The pressure inside the anaerobic reactor is less than or equal to 5 kPa.

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