Spraying device for biogas desulfurization

Abstract

The utility model relates to the technical field of biogas treatment, and particularly discloses a spraying device for biogas desulfurization. The device comprises a PLC control system and a tower body, the upper end of the tower body is provided with a desulfurizer adding pipe, the desulfurizer adding pipe is connected with a plurality of desulfurizer spraying pipes and stirring fins, the desulfurizer adding pipe is sleeved with a desulfurizer solution pipe through key connection, and the desulfurizer solution pipe is provided with a plurality of spraying pipes; the upper end of the desulfurizer solution pipe is connected with the desulfurizer solution cylinder; the upper end of the desulfurizer adding pipe is connected with the desulfurizer adding cylinder. According to the utility model, the gas-liquid contact effect is enhanced through the rotating spray pipe, and the removal effect of hydrogen sulfide is improved. The vulcanizing agent solution is recycled, so that the operation cost is reduced; the device is simple in structure, convenient to operate, easy to maintain and suitable for biogas treatment projects of various scales.

Description

Technical Field

[0001] This utility model relates to the field of biogas treatment technology, and in particular to a spray device for biogas desulfurization. Background Technology

[0002] As a renewable resource, the removal of hydrogen sulfide is a crucial step in the utilization of biogas. Existing biogas desulfurization technologies mainly include wet desulfurization and dry desulfurization, with wet desulfurization being widely used due to its high efficiency and ease of operation. However, traditional wet desulfurization devices suffer from problems such as uneven distribution of the desulfurizing agent, insufficient gas-liquid contact, and low desulfurization efficiency. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a spray device for biogas desulfurization that can enhance the gas-liquid contact effect and achieve efficient removal of hydrogen sulfide from biogas.

[0004] This utility model is achieved through the following technical solution:

[0005] A biogas desulfurization spraying device includes a PLC control system and a tower body. The upper end of the tower body has a biogas discharge pipe, and the lower end has a biogas inlet pipe and a circulation pipe. The upper end of the tower body has a desulfurizing agent addition pipe extending into the tower body. The desulfurizing agent addition pipe is connected to several desulfurizing agent spray pipes and stirring blades, with the stirring blades located below the desulfurizing agent spray pipes. A desulfurizing agent solution pipe is connected to the outside of the desulfurizing agent addition pipe via a key, and the desulfurizing agent solution pipe has several spray pipes. The upper end of the desulfurizing agent solution pipe is connected to a desulfurizing agent solution cylinder via a bearing, and the upper end of the desulfurizing agent addition pipe is connected to the desulfurizing agent addition cylinder via a bearing. The desulfurizing agent solution pipe is driven by a motor. A circulation pump is installed on the circulation pipe. The desulfurizing agent addition cylinder is also connected to a desulfurizing agent solution tank via a connecting pipe. The desulfurizing agent solution pipe is connected to the circulation pipe, and a solenoid valve is installed on the connecting pipe. A pH meter is installed inside the tower body. The pH meter, solenoid valve, and circulation pump are electrically connected to the PLC control system.

[0006] The tower body is equipped with a dust removal plate, which is located above the spray pipe.

[0007] The desulfurizing agent solution pipe is equipped with a driven sprocket, the upper end of the tower body is equipped with a motor, the output end of the motor is equipped with a driving sprocket, and the driving sprocket and the driven sprocket are connected by chain drive.

[0008] The beneficial effects of this utility model are:

[0009] This invention enhances the gas-liquid contact effect through a rotating spray pipe, thereby improving the removal efficiency of hydrogen sulfide.

[0010] The recycling of the vulcanizing agent solution reduces operating costs.

[0011] This utility model has a simple structure, is easy to operate and maintain, and is suitable for biogas treatment projects of various scales. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings:

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0014] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0015] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0016] Figure 4 for Figure 2 A magnified structural diagram at point B in the middle.

[0017] In the diagram, 1 is the tower body, 2 is the biogas discharge pipe, 3 is the biogas inlet pipe, 4 is the circulation pipe, 5 is the pH meter, 6 is the desulfurizer addition pipe, 7 is the desulfurizer spray pipe, 8 is the stirring fin, 9 is the desulfurizer solution pipe, 10 is the driven sprocket, 11 is the motor, 12 is the driving sprocket, 13 is the chain, 14 is the desulfurizer addition cylinder, 15 is the connecting pipe, 16 is the desulfurizer solution tank, 17 is the solenoid valve, 18 is the desulfurizer solution cylinder, 19 is the dust removal plate, 20 is the circulation pump, and 21 is the spray pipe. Detailed Implementation

[0018] The attached figure shows a specific embodiment of this utility model.

[0019] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0021] like Figures 1 to 4 As shown, this type of biogas desulfurization spray device includes a PLC control system and a tower body 1. The entire device is operated under PLC control.

[0022] A biogas discharge pipe 2 is installed at the upper end of the tower body 1, and a biogas inlet pipe 3 and a circulation pipe 4 are installed at the lower end. A circulation pump 20 is installed on the circulation pipe 4.

[0023] A pH meter 5 is installed at the lower end of the tower body 1. The pH meter 5 is electrically connected to the PLC control system.

[0024] A desulfurizing agent addition pipe 6 is installed at the upper end of the tower body 1 to replenish the desulfurizing agent. After the desulfurizing agent addition pipe 6 extends into the interior of the tower body 1, it is connected to several desulfurizing agent spray pipes 7 and stirring wings 8. The stirring wings 8 are located below the desulfurizing agent spray pipes 7. During operation, the desulfurizing agent spray pipes 7 are located above the liquid level, and the stirring wings 8 are located below the liquid level.

[0025] The desulfurizer addition pipe 6 is solid from the desulfurizer spray pipe 7 below.

[0026] A desulfurizing agent solution pipe 9 is connected to the outside of the desulfurizing agent addition pipe 6 by a key. The desulfurizing agent solution pipe 9 extends from the tower body 1. A driven sprocket 10 is installed outside the desulfurizing agent solution pipe 9. A motor 11 is also installed at the upper end of the tower body 1. The output end of the motor 11 faces downward and a driving sprocket 12 is installed. The driving sprocket 12 and the driven sprocket 10 are connected by a chain 13. Several spray pipes 21 are installed at the lower end of the desulfurizing agent solution pipe 9. The spray pipes 21 are located above the desulfurizing agent spray pipe 7.

[0027] The upper end of the desulfurizing agent addition pipe 6 is connected to a desulfurizing agent addition cylinder 14 via a bearing. The desulfurizing agent addition cylinder 14 is connected to the desulfurizing agent solution tank 16 via a connecting pipe 15. A solenoid valve 17 is installed on the connecting pipe 15 and is electrically connected to the PLC control system.

[0028] The upper end of the desulfurizing agent solution pipe 9 is connected to a desulfurizing agent solution cylinder 18 via a bearing. The desulfurizing agent addition cylinder 14 is located inside the desulfurizing agent solution cylinder 18, and the desulfurizing agent solution cylinder 18 is connected to the circulation pipe 4.

[0029] A dust removal plate 19 is installed inside the tower body 1, and the dust removal plate 19 is located above the spray pipe 21.

[0030] The work process is as follows:

[0031] Sulfur-containing biogas enters the desulfurizing agent solution inside the tower body 1 through the biogas inlet for partial desulfurization. Under the stirring action of the stirring fins 8, some hydrogen sulfide is further removed. After preliminary desulfurization, the biogas rises and encounters the rotating spray desulfurizing agent solution, and the gas and liquid fully contact and mix, so that the hydrogen sulfide in the biogas is further fully removed. After treatment, the biogas passes through the dust removal plate 19 for dust removal and is finally discharged from the biogas discharge pipe 2.

[0032] After desulfurization, the desulfurizing agent solution in tower body 1 enters the desulfurizing agent solution cylinder 18 through circulation pipe 4 and circulation pump 20, and then enters the desulfurizing agent solution pipe 9 and is sprayed out from the desulfurizing agent spray pipe 7 to form a circulation, reducing operating costs. During operation, since the desulfurizing agent solution cylinder 18 is fixedly connected to the circulation pipe 4, the desulfurizing agent solution cylinder 18 does not rotate, while only the desulfurizing agent solution pipe 9, which is axially connected to the desulfurizing agent solution cylinder 18, rotates.

[0033] pH meter 5 monitors the pH value of the desulfurizing agent solution in real time. When the pH value is less than the set value, under the control of the PLC control system, solenoid valve 17 opens, and desulfurizing agent solution is added from desulfurizing agent solution tank 16 to desulfurizing agent addition cylinder 14. The desulfurizing agent solution is sprayed out through desulfurizing agent addition pipe 6 and desulfurizing agent spray pipe 7 and added to the desulfurizing agent solution in tower body 1. Under the stirring action of stirring fins 8, it is fully mixed until pH meter 5 detects that the pH value has reached the set maximum value, and then solenoid valve 17 is closed.

[0034] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. 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 the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," 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 the present invention. 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.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0038] Apart from the technical features described in the specification, all other technical features are known to those skilled in the art.

Claims

1. A spray device for biogas desulfurization, characterized in that, The system includes a PLC control system and a tower body (1). The upper end of the tower body (1) is provided with a biogas discharge pipe (2), and the lower end of the tower body (1) is provided with a biogas inlet pipe (3) and a circulation pipe (4). The upper end of the tower body (1) is provided with a desulfurizing agent addition pipe (6) extending into the tower body (1). The desulfurizing agent addition pipe (6) is connected to several desulfurizing agent spray pipes (7) and stirring wings (8). The stirring wings (8) are located below the desulfurizing agent spray pipes (7). The desulfurizing agent addition pipe (6) is connected to a desulfurizing agent solution pipe (9) by a key. The desulfurizing agent solution pipe (9) is provided with several spray pipes (21). The upper end of the desulfurizing agent solution pipe (9) is connected by a bearing. The desulfurizing agent solution cylinder (18) is connected to the desulfurizing agent addition cylinder (14) at the upper end of the desulfurizing agent addition pipe (6) via a bearing. The desulfurizing agent solution pipe (9) is connected to the motor (11) via a drive. A circulation pump (20) is provided on the circulation pipe (4). The desulfurizing agent addition cylinder (14) is also connected to the desulfurizing agent solution tank (16) via a connecting pipe (15). The desulfurizing agent solution pipe (9) is connected to the circulation pipe (4). A solenoid valve (17) is provided on the connecting pipe (15). A pH value tester (5) is provided inside the tower body (1). The pH value tester (5), the solenoid valve (17), and the circulation pump (20) are electrically connected to the PLC control system, respectively.

2. The spray device for biogas desulfurization according to claim 1, characterized in that, The tower body (1) is equipped with a dust removal plate (19), which is located above the spray pipe (21).

3. The spray device for biogas desulfurization according to claim 1, characterized in that, The desulfurizing agent solution pipe (9) is provided with a driven sprocket (10), the upper end of the tower body (1) is provided with a motor (11), the output end of the motor (11) is provided with a driving sprocket (12), and the driving sprocket (12) and the driven sprocket (10) are connected by a chain (13).

Images