Demisting device for anaerobic biogas water-sealed tank

Abstract

The utility model relates to the technical field of anaerobic biogas systems, and discloses an anaerobic biogas water-sealed tank demisting device which comprises a water-sealed tank body, a drainage assembly, a water mist separation assembly and a circulating water tank, the water mist separation assembly is fixedly installed on the upper portion in the water-sealed tank body, and a V-shaped plate is fixedly installed in the water mist separation assembly. A water mist separation assembly is arranged in the water-sealed tank, a biogas outlet is formed in the upper portion of the water mist separation assembly, a spiral plate is fixedly installed in the biogas outlet, a valve is arranged at the top of the biogas outlet and connected with a biogas outlet pipeline, and a circulating water tank is arranged outside the biogas outlet. The purposes of purifying the biogas and maintaining the pressure of the anaerobic reactor when the biogas enters the water seal tank are achieved, water in the biogas is isolated in the water seal tank body due to the structure of the water mist separation assembly, the purpose of water mist separation is achieved, and the biogas outlet measurement precision is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of anaerobic biogas systems, in particular to a demisting device for an anaerobic biogas water seal tank. Background Art

[0002] The biogas produced during the wastewater treatment process in the anaerobic reactor needs to pass through a water seal tank, which can maintain the pressure of the anaerobic reactor, have a barrier and fire-retardant effect, and also has a certain biogas purification effect.

[0003] The biogas after passing through the water seal tank contains a large amount of water vapor. To utilize the biogas, the water vapor must be removed. Otherwise, the biogas carrying water vapor will cause large fluctuations in the measurement of the back-end instruments. At the same time, the condensation of water vapor will block the pipelines and equipment, causing the equipment to fail to operate normally. Therefore, it is particularly important to effectively separate the water vapor of the biogas after passing through the water seal to ensure the stable operation of subsequent equipment. Utility Model Content

[0004] The utility model aims to provide an anaerobic reaction biogas water seal tank demisting device, which is specifically a water seal tank with a biogas demisting function, which is more conducive to the normal operation of the back-end equipment and solves the problems of unstable operation of the back-end instrument of the conventional water seal tank biogas and blockage of the biogas pipeline.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a demisting device for an anaerobic reaction biogas water seal tank, comprising a water seal tank body, a leg is arranged at the bottom of the water seal tank body and fixed on the device base, a biogas inlet is opened at the upper outer side of the water seal tank body, a connecting flange is arranged outside the biogas inlet and a pipe at the rear end of the biogas inlet extends to the bottom of the water seal tank body, an automatic drainage component is arranged in the water seal tank body, a water mist separation component is fixedly installed in the upper part of the water seal tank body, and a V-shaped plate is fixedly installed inside the water mist separation component.

[0006] Furthermore, the external connection flange of the biogas inlet is connected to a biogas inlet pipe, and the biogas inlet pipe is a biogas production pipeline of the anaerobic reactor.

[0007] Furthermore, the automatic drainage component includes a drainage pipe and a valve. The automatic drainage component is set with low, medium and high liquid levels, and the internal drainage pipe extends to the bottom of the water seal tank through an elbow and is externally connected to a discharge pipe through a valve.

[0008] Furthermore, the automatic drainage assembly is connected to a vent pipe at the bottom of the water seal tank.

[0009] Furthermore, the upper side of the water mist separation assembly box is welded and fixed to the water seal tank, the internal V-shaped plate is welded and fixed to the side of the box, and a biogas outlet is arranged at the upper end of the water mist separation assembly.

[0010] Furthermore, a biogas outlet is provided at the top of the water mist separation component, a spiral plate is fixedly installed inside the biogas outlet, a circulating water tank is arranged outside the biogas outlet, and the circulating water tank is located at the top of the water seal tank body, and the inside is the biogas outlet, a circulating water inlet is arranged at the lower part of the side of the circulating water tank, a liquid outlet is arranged at the upper part on the other side of the liquid inlet, and the liquid outlet pipe is connected to the water seal tank body.

[0011] Furthermore, a spiral plate is fixedly installed in the biogas outlet, a circulating water tank is arranged outside the biogas outlet, and the biogas outlet is connected to the biogas outlet pipe through an outlet valve, and a biogas flow meter is installed on the biogas outlet pipe.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] The anaerobic reaction biogas water seal tank demisting device, through the coordination between the water seal tank body, drainage components, water mist separation components and circulating water tank, has the functions of a conventional water seal tank in an integrated design to maintain the pressure, fire resistance and biogas purification effect of the anaerobic reactor, and also has automatic drainage and biogas demisting functions to ensure the stable operation of subsequent equipment and pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the water mist separation component of the utility model;

[0016] Figure 3 This is a top view of the installation of the structure of the utility model;

[0017] In the figure: 1. Water seal tank; 2. Biogas inlet pipe; 3. Support leg; 4. External connection flange of biogas inlet; 5. Automatic drainage assembly; 6. Biogas outlet; 7. Circulating water tank; 8. Circulating water inlet; 9. Circulating water outlet; 10. Water mist separation assembly; 11. Biogas outlet valve; 12. V-shaped plate; 13. Spiral plate; 14. Biogas outlet pipe; 15. Biogas flow meter. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figures 1 to 3The utility model provides a technical solution, a demisting device for an anaerobic biogas water seal tank, comprising a water seal tank body 1, a leg 3 is provided at the bottom of the water seal tank body 1 and fixed on the device foundation, and welded and fixed to the embedded plate of the equipment foundation. An external connection flange 4 for a biogas inlet is provided at the upper outer part of the water seal tank body 1, and the rear end pipe of the biogas inlet extends to the bottom of the water seal tank body, an automatic drainage assembly 5 is provided in the water seal tank body, a water mist separation assembly 10 is fixedly installed at the upper part of the water seal tank body, a V-shaped plate 12 is fixedly installed in the water mist separation assembly, a biogas outlet 6 is opened at the upper part of the water mist separation assembly, a spiral plate 13 is fixedly installed in the biogas outlet 6, a circulating water tank 7 is provided outside the biogas outlet 6, the circulating water tank 7 is located at the top of the water seal tank body 1, and the interior is the biogas outlet 6, a circulating water inlet 8 is provided at the lower side of the circulating water tank 7, a circulating water outlet 9 is provided at the upper part of the other side of the inlet, and the circulating water outlet is connected to the water seal tank body through a pipeline.

[0020] In this embodiment, by arranging the automatic drainage component 5 and the water mist separation component 10 in the water seal tank body 1, the integrated design of the water seal tank has the effect of both automatic drainage and biogas demisting functions.

[0021] The working principle of the above embodiment is:

[0022] The biogas passes through the water seal tank 1, overcomes the water level pressure, and the biogas outlet passes through the water mist separation component 10. The water droplets condensed from the water vapor in the biogas are intercepted by the V-shaped plate and returned to the water seal tank. The biogas continues to rise to reach the biogas outlet pipe. A spiral plate 13 is arranged in the pipe, and a circulating water tank 7 is arranged outside the biogas outlet pipe. The residual water vapor in the biogas is cooled by circulating water. The condensed water is blocked by the spiral plate 13 and returns to the water seal tank. The water in the water seal tank exceeds the set operating liquid level and is automatically drained.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anaerobic biogas water seal tank demisting device, characterized in that: It consists of a water seal tank body, an automatic drainage component, a water mist separation component and a circulating water tank. The water mist separation component is fixedly installed on the upper part of the water seal tank body, the upper part of the side of the box body of the water mist separation component is welded and fixed to the water seal tank body, the internal V-shaped plate is welded and fixed to the side of the box body, a biogas outlet is arranged on the upper end of the water mist separation component, a spiral plate is fixedly installed in the biogas outlet, and a circulating water tank is arranged outside the biogas outlet.

2. The anaerobic biogas water seal tank demisting device according to claim 1, characterized in that: The bottom of the water seal tank is provided with supporting legs, and the supporting legs are welded and fixed to the embedded plate of the equipment foundation.

3. The anaerobic biogas water seal tank demisting device according to claim 1, characterized in that: A biogas inlet is provided on the upper outer side of the water-sealed tank body. The biogas inlet is provided with an external biogas inlet connection flange connected to a biogas inlet pipe which is a biogas production pipeline of an anaerobic reactor. The rear end pipeline of the biogas inlet extends to the bottom of the water-sealed tank body.

4. The anaerobic biogas water seal tank demisting device according to claim 1, characterized in that: An automatic drainage component is arranged in the water seal tank body, and the automatic drainage component includes a drainage pipe and a valve. The automatic drainage component is arranged with low, medium and high liquid levels, and the internal drainage pipe extends to the bottom of the water seal tank body through an elbow, and is externally connected to a discharge pipe through a valve.

5. The anaerobic biogas water seal tank demisting device according to claim 4, characterized in that: The drainage assembly is connected to a vent pipe at the bottom of the water seal tank.

6. The anaerobic biogas water seal tank demisting device according to claim 1, characterized in that: The circulating water tank is located at the top of the water seal tank body, and has a biogas outlet inside. A circulating water inlet is arranged at the lower side of the circulating water tank, and a circulating water outlet is arranged at the upper part of the other side of the inlet, and the outlet pipe is connected to the water seal tank body.

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