Anaerobic fermentation biogas dehydration system

Abstract

The invention belongs to the technical field of environmental protection, and discloses an anaerobic fermentation biogas dehydration system which comprises an outer cabin body arranged on the top wall of a fermentation container in a protruding mode and a collection cabin body arranged in the outer cabin body, an annular space between the outer cabin body and the collection cabin body forms a biogas channel, the biogas channel is communicated with the interior of the collection cabin body, and the collection cabin body is connected with a collection opening. According to the anaerobic fermentation biogas dehydration system provided by the invention, generated biogas is collected through the biogas channel and then enters the collection cabin through the biogas pipeline, and the temperature of the collection cabin is relatively low, so that water vapor is condensed into water drops to fall to the liquid level, and the problems of blockage and the like caused by scum can be avoided while the biogas dehydration can be effectively realized.

Description

Technical Field

[0001] The invention belongs to the technical field of environmental protection, and in particular relates to an anaerobic fermentation biogas dehydration system. Background Art

[0002] The biogas produced by common large, medium and small biogas tanks and biogas projects during operation contains water vapor. The high water content of biogas affects the purity of biogas, and at the same time, scum is generated to enter the biogas channel and block it, which may affect the normal production and use of biogas, or even cause high pressure to damage equipment and cause accidents. In the existing technology, water vapor in biogas must be separated through a gas-water separator, and after the coarse slag is separated by dry and wet separation, the coarse slag entering the equipment is reduced and the scum blockage problem is solved by stirring.

[0003] The above description of the background technology is only for facilitating an in-depth understanding of the technical solution of the present invention (such as the technical means used, the technical problems solved and the technical effects produced), and should not be regarded as an admission or any form of implication that the information constitutes prior art already known to those skilled in the art. Summary of the invention

[0004] The present invention aims to solve the above technical problems at least to a certain extent. To this end, the present invention aims to provide an anaerobic fermentation biogas dehydration system.

[0005] The technical solution adopted by the present invention is:

[0006] An anaerobic fermentation biogas dehydration system comprises an outer cabin protruding from the top wall of a fermentation container and at least one collecting cabin arranged inside the outer cabin, an annular space between the outer cabin and the collecting cabin forms at least one biogas channel, the biogas channel is connected to the inside of the collecting cabin, and the collecting cabin is connected to a collecting port.

[0007] Preferably, the biogas channel is connected to the first end of the tee through at least one connecting pipe, and the second end of the tee is connected to the collecting chamber.

[0008] Preferably, the third end of the three-way connection is connected to the interior of the fermentation container. The third end of the three-way connection is also connected to the collection cabin. The inlet of the connecting pipe is arranged on the wall of the outer cabin. A regulating valve is arranged on the connecting pipe.

[0009] Preferably, the top of the collecting chamber is connected to the inner top wall of the outer chamber, and the inlet of the collecting pipe is arranged on the inner top wall of the outer chamber. The lower end of the collecting chamber extends to the interior of the fermentation container. The collecting port is connected to the collecting pipe, and a regulating valve is arranged on the collecting pipe.

[0010] Preferably, the fermentation container is provided with a feed pipe, a slag discharge pipe and a liquid discharge port.

[0011] The beneficial effects of the present invention are:

[0012] The anaerobic fermentation biogas dehydration system provided by the present invention generates biogas which is collected through a biogas channel and then enters a collection chamber through a biogas pipeline. The lower temperature of the collection chamber is conducive to the condensation of water vapor into water droplets that fall to the liquid surface, and can effectively realize biogas dehydration without causing problems such as blockage caused by scum. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the anaerobic fermentation biogas dehydration system in Example 1 of the present invention.

[0014] Figure 2 It is a top view of the outer cabin body of the present invention.

[0015] Figure 3 It is a schematic diagram of the anaerobic fermentation biogas dehydration system in the second embodiment of the present invention.

[0016] Figure 4 It is a schematic diagram of the anaerobic fermentation biogas dehydration system in Example 3 of the present invention.

[0017] Figure 5 It is a schematic diagram of the anaerobic fermentation biogas dehydration system in Example 4 of the present invention.

[0018] Figure 6 It is a schematic diagram of the anaerobic fermentation biogas dehydration system in Example 5 of the present invention.

[0019] Figure 7 It is a schematic diagram of the anaerobic fermentation biogas dehydration system in Example 6 of the present invention.

[0020] Figure 8 It is a schematic diagram of the anaerobic fermentation biogas dehydration system in Example 7 of the present invention.

[0021] Fig. 9 Schematic diagram of multiple biogas channels of the present invention.

[0022] In the figure: 1-fermentation container; 2-external cabin; 3-collecting cabin; 4-biogas channel; 5-connecting pipe; 6-regulating valve; 7-tee; 8-extension pipe; 9-collecting pipeline; 10-regulating valve. DETAILED DESCRIPTION

[0023] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention. The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations.

[0024] In the present invention, unless otherwise clearly stipulated and limited, terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements.

[0025] Embodiment 1

[0026] like Figure 1 and Figure 2 As shown, an anaerobic fermentation biogas dehydration system of the present embodiment comprises an outer cabin body 2 protruding from the top wall of a fermentation container 1 and a collecting cabin body 3 arranged inside the outer cabin body 2, the lower end of the collecting cabin body 3 extends to the interior of the fermentation container 1, the outer cabin body 2 and the collecting cabin body 3 are both roughly cylindrical, and the top of the collecting cabin body 3 is connected to the inner top wall of the outer cabin body 2, the annular space between the outer cabin body 2 and the collecting cabin body 3 forms a biogas channel 4, the biogas channel 4 is connected to the interior of the collecting cabin body 3 through a connecting pipe 5, the collecting cabin body 3 is connected to a collecting port, the collecting port is connected to a collecting pipe 9, the inlet of the collecting pipe 9 is arranged on the inner top wall of the outer cabin body 2, and a regulating valve 10 is provided on the collecting pipe 9; of course, the collecting port can also be directly connected to the regulating valve 10.

[0027] A feed pipe 11, a slag discharge pipe 12 and a liquid discharge port 13 are provided on the fermentation container 1. Straw, excrement, kitchen garbage and other types of waste organic matter are transported to the fermentation container 1 through the feed pipe 11 for anaerobic fermentation treatment. The scum is completely decomposed under the action of the top wall of the fermentation container 1 and then settled as sediment and discharged from the slag discharge pipe 12. The generated liquid is discharged from the liquid discharge port 13. The generated biogas is collected through the biogas channel 4 and then enters the collecting cabin 3 through the connecting pipe 5. Since the collecting cabin 3 is isolated from the outside world through the biogas channel 4 and the outer cabin 2 (in order to increase the contact area of ​​water vapor and achieve a better dehydration effect, a mesh plate can be installed in the collecting cabin 3), the temperature of the collecting cabin 3 is relatively low, which is conducive to the condensation of water vapor into water droplets and falling to the liquid surface, thereby realizing biogas dehydration. The dehydrated biogas passes through the collection pipe 9 and the valve or regulating valve 10, and the biogas is continuously transported to the generator, boiler, stove, etc. for energy utilization.

[0028] Specifically, the inlet of the connecting pipe 5 is arranged on the side wall of the outer cabin body 2, the biogas channel 4 is connected to the first end of the tee 7 through the connecting pipe 5, the second end of the tee 7 is connected to the collecting cabin body 3, the third end of the tee 7 is connected to the extension pipe 8, the extension pipe 8 extends below the liquid level inside the fermentation container 1, and a regulating valve 6 is provided on the connecting pipe 5.

[0029] The connecting pipe 5, the regulating valve 6, the tee 7 and the extension pipe 8 form a set of biogas pipelines. At least one set of biogas pipelines is provided. When the biogas enters the connecting pipe 5, the water in the tee 7 and the connecting pipe 5 is pressed toward the lower end outlet of the extension pipe 8 by the biogas, thereby controlling the liquid level to no longer rise. The biogas enters the collecting chamber 3 from the second end of the tee 7, the water vapor condenses into water droplets and falls to the liquid surface, and the dehydrated biogas enters the collecting pipe 9.

[0030] The scum is controlled by the regulating valve 6 and the tee 7, and the scum will not rise above the horizontal position of the connection point between the tee 7 and the collecting chamber 3, so that the scum can be effectively prevented from rising and blocking the biogas channel 4, the collecting chamber 3 and the collecting pipe 9. The anaerobic fermentation biogas dehydration system can effectively realize biogas dehydration without problems such as blockage caused by scum.

[0031] Embodiment 2

[0032] like Figure 3 As shown, the anaerobic fermentation biogas dehydration system of this embodiment is different from the first embodiment in that most of the biogas pipeline is arranged in the collection chamber 3, and the biogas directly enters the collection chamber 3 from the second end through the tee 7.

[0033] Embodiment 3

[0034] like Figure 4 As shown, an anaerobic fermentation biogas dehydration system of this embodiment combines an outer cabin 2 and a collecting cabin 3 into one, and controls the liquid surface scum not to enter the space of the outer cabin 2 through a regulating valve 10, and the biogas directly enters the outer cabin 2, and the water vapor in the biogas first condenses into water in the outer cabin 2 and drops to the liquid surface, and the dehydrated biogas enters the collecting pipe 9.

[0035] Embodiment 4

[0036] like Figure 5 As shown, the anaerobic fermentation biogas dehydration system of this embodiment is different from the embodiment 1 only in that the lower end of the extension pipe 8 is connected to the side wall of the collection chamber 3, which can further prevent the scum from entering the tee 7 from the extension pipe 8 and causing blockage.

[0037] like Figure 6 As shown, the anaerobic fermentation biogas dehydration system of this embodiment is different from the first embodiment only in that the inlet of the connecting pipe 5 is arranged upward and located in the biogas channel 4, and the setting of the regulating valve 6 is cancelled.

[0038] like Figure 7 As shown, the anaerobic fermentation biogas dehydration system of this embodiment is different from the fourth embodiment only in that the inlet of the connecting pipe 5 is arranged upward and located in the biogas channel 4, and the setting of the regulating valve 6 is cancelled.

[0039] like Figure 8As shown, the anaerobic fermentation biogas dehydration system of this embodiment is different from the second embodiment only in that the inlet of the connecting pipe 5 is arranged in the collecting chamber 3, and the setting of the regulating valve 6 is cancelled.

[0040] It can be understood that the number of biogas pipelines is not limited to the two sets in the first embodiment. In other embodiments, the number of biogas pipelines may also be one set or more than two sets.

[0041] It is understood that the number of the connecting pipes 5 is not limited to Figure 1 In the figure, there are two connecting pipes. In other embodiments, the number of the connecting pipes 5 may be one or more than two.

[0042] It can be understood that the shapes of the outer cabin 2 and the collecting cabin 3 are not limited to cylindrical. In other embodiments, the outer cabin 2 and the collecting cabin 3 may also be rectangular or have other special-shaped structures.

[0043] It can be understood that the number and shape of the collection chamber 3 and the biogas channel 4 are not limited to the one in the first embodiment. In other embodiments, the collection chamber 3 can be two or more, the number of the biogas channel 4 can be two or more, and the multiple biogas channels 4 are connected by holes, such as Fig. 9 described.

[0044] It can be understood that the tee 7 can be a specific tee structure, or it can be a side hole directly opened on the pipe, so that the pipe and the side hole form a structure similar to a tee, such as Fig. 9 described.

[0045] It can be understood that when the daily processing volume is large, multiple anaerobic fermentation biogas dehydration systems can be set up, and the adjacent systems can be connected in series through the feed pipe and the liquid outlet, that is, the anaerobic fermentation biogas dehydration system can be used in multiple stages by at least one or more systems; in order to reduce the production cost of the equipment, multiple systems can also be combined into multiple integrated structures for use.

[0046] The present invention is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present invention fall within the protection scope of the present invention.

Claims

1. An anaerobic fermentation biogas dehydration system, characterized in that: The invention comprises an outer chamber (2) protruding from the top wall of a fermentation container (1) and at least one collecting chamber (3) arranged inside the outer chamber (2); an annular space between the outer chamber (2) and the collecting chamber (3) forms at least one biogas channel (4); the biogas channel (4) is connected to the inside of the collecting chamber (3); and the collecting chamber (3) is connected to a collecting port.

2. The anaerobic fermentation biogas dehydration system according to claim 1, characterized in that: The biogas channel (4) is connected to a first end of a tee (7) via at least one connecting pipe (5), and a second end of the tee (7) is connected to a collecting chamber (3).

3. The anaerobic fermentation biogas dehydration system according to claim 2, characterized in that: The third end of the three-way connection (7) is in communication with the interior of the fermentation container (1).

4. The anaerobic fermentation biogas dehydration system according to claim 2, characterized in that: The third end of the tee (7) is also in communication with the collecting chamber (3).

5. The anaerobic fermentation biogas dehydration system according to claim 2, characterized in that: The inlet of the connecting pipe (5) is arranged on the wall of the outer cabin (2).

6. The anaerobic fermentation biogas dehydration system according to claim 2, characterized in that: The connecting pipe (5) is provided with a regulating valve (6).

7. The anaerobic fermentation biogas dehydration system according to claim 1, characterized in that: The top of the collecting chamber (3) is connected to the inner top wall of the outer chamber (2), and the inlet of the collecting pipe (9) is arranged on the inner top wall of the outer chamber (2).

8. The anaerobic fermentation biogas dehydration system according to claim 1, characterized in that: The lower end of the collecting chamber (3) extends into the interior of the fermentation container (1).

9. The anaerobic fermentation biogas dehydration system according to claim 1, characterized in that: The collecting port is connected to a collecting pipe (9), and a regulating valve (10) is provided on the collecting pipe (9).

10. The anaerobic fermentation biogas dehydration system according to claim 1, characterized in that: The fermentation container (1) is provided with a feed pipe (11), a slag discharge pipe (12) and a liquid discharge port (13).

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