Alkali liquor circulation hydrogen sulfide removal device

Abstract

The utility model relates to the technical field of biogas treatment, and particularly discloses an alkali liquor circulation hydrogen sulfide removal device. The spray tower comprises a tower body, three layers of spray pipes which are not parallel to one another are arranged in the tower body, an exhaust pipe is arranged at the upper end of the tower body and comprises an upper section and a lower section, the lower section is thicker than the upper section, the upper section and the lower section are connected through a connecting section, the connecting section comprises an outer barrel and an inner barrel, and the outer barrel and the inner barrel are in threaded connection with the lower section and the upper section respectively. According to the utility model, a plurality of nozzles with different inclination angles are arranged, so that crossed injection is formed, a methane rising channel is completely blocked, and methane is inevitably subjected to alkali liquor sprayed out of the nozzles during rising, so that the desulfurization effect is better. The activated carbon filter cartridge is also arranged, so that hydrogen sulfide in the biogas can be eliminated through activated carbon, and the desulfurization efficiency is further improved. According to the utility model, the biogas outlet is divided into the upper section and the lower section which are connected through the connecting joint, so that the activated carbon can be replaced only by screwing off the outer cylinder, and the operation is convenient and fast.

Description

TECHNICAL FIELD

[0001] The utility model relates to biogas treatment technical field, especially a kind of alkali solution circulation hydrogen sulfide removal device. BACKGROUND

[0002] As a renewable resource, the removal of hydrogen sulfide in the utilization process of biogas is a key link. The existing biogas desulfurization technology mainly includes wet desulfurization and dry desulfurization, among which wet desulfurization is widely used due to its advantages such as high efficiency and easy operation. However, in the traditional wet desulfurization device, the desulfurizer solution after desulfurization directly enters the circulating pool for circulation, which leads to the difference in alkalinity of the desulfurizer solution entering the circulation. At the same time, the spray layer sprays from top to bottom directly, which may cause a blind area of spraying, and the gas-liquid contact time is short, so there are problems such as uneven distribution of desulfurizer, insufficient gas-liquid contact and low desulfurization efficiency. As a result, the final discharged biogas may contain a small amount of hydrogen sulfide gas. To solve this problem, activated carbon is placed at the biogas discharge outlet for secondary desulfurization, but the current activated carbon is not convenient to replace. SUMMARY

[0003] The alkali solution circulation hydrogen sulfide removal device provided by the utility model is easy to replace activated carbon and has high desulfurization efficiency.

[0004] The utility model is realized through the following technical schemes:

[0005] An alkali solution circulation hydrogen sulfide removal device, comprising a tower body, a spray system is arranged in the tower body, an exhaust pipe is arranged at the upper end of the tower body, and activated carbon is arranged at the exhaust pipe; the spray system comprises a plurality of parallel spray pipes, each spray pipe is provided with an inclined nozzle, and the inclined directions of adjacent nozzles are opposite; the exhaust pipe comprises an upper section and a lower section, the lower section is thicker than the upper section, the upper section and the lower section are connected through a connecting joint, the connecting joint comprises an outer cylinder and an inner cylinder, the outer cylinder and the inner cylinder are connected through a connecting plate, the outer cylinder is connected with the lower section through internal threads, and the inner cylinder is connected with the upper section through external threads; a lower inner flange is arranged in the lower section, an upper inner flange is arranged in the inner cylinder, and an activated carbon filter cartridge is arranged in the inner cylinder, and the lower end of the inner cylinder is in contact with the lower inner flange during operation.

[0006] A lower ring plate is arranged on the outer wall of the lower section, and the lower end of the outer cylinder is in contact with the lower ring plate during operation.

[0007] A lower sealing ring is arranged on the lower ring plate.

[0008] The upper end of the outer cylinder is bent inward to form a ring-shaped plug, an upper ring plate is arranged on the outer wall of the upper section, and the ring-shaped plug is in contact with the upper ring plate during operation.

[0009] An upper sealing ring is arranged on the upper ring plate.

[0010] The spray system comprises three layers of spray pipes, and adjacent two layers of spray pipes are not parallel.

[0011] The included angle between adjacent two layers of spray pipes is 60°.

[0012] The beneficial effects of the present application are as follows:

[0013] The present application is provided with a plurality of nozzles with different inclination angles, forming cross injection, completely blocking the channel of biogas rising, and the biogas rising must pass through the alkali liquid sprayed by the nozzles, so that the desulfurization effect is better.

[0014] The present application is further provided with an activated carbon filter cartridge, and in case of hydrogen sulfide leakage, the activated carbon can eliminate hydrogen sulfide in the biogas, further improving the desulfurization efficiency.

[0015] The present application divides the biogas outlet into an upper section and a lower section, and connects them through a connecting joint, which comprises an inner cylinder and an outer cylinder, and the activated carbon filter cartridge is placed in the inner cylinder, so that when the activated carbon is replaced, only the outer cylinder needs to be unscrewed, which is convenient and fast. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present application will be further described below in combination with the drawings:

[0017] Figure 1 It is a front view structural schematic diagram of the present application;

[0018] Figure 2 It is a sectional view structural schematic diagram of the present application;

[0019] Figure 3 It is a top view structural schematic diagram of the uppermost spray layer;

[0020] Figure 4 It is a top view structural schematic diagram of the middle spray layer;

[0021] Figure 5 It is a top view structural schematic diagram of the lowermost spray layer;

[0022] Figure 6 It is Figure 3 It is a sectional view structural schematic diagram of A-A direction;

[0023] Figure 7 It is a sectional view structural schematic diagram of the exhaust pipe.

[0024] In the diagram, 1 is the tower body, 2 is the exhaust pipe, 201 is the upper section, 202 is the upper section, 3 is the spray pipe, 4 is the nozzle, 5 is the connecting section, 501 is the outer cylinder, 5011 is the annular plug, 502 is the inner cylinder, 6 is the connecting plate, 7 is the lower inner flange, 8 is the upper inner flange, 9 is the activated carbon filter cartridge, 10 is the sealing gasket, 11 is the lower ring plate, 12 is the lower sealing ring, 13 is the upper ring plate, 14 is the upper sealing ring, 15 is the circulation pipe, and 16 is the connecting pipe. Detailed Implementation

[0025] The attached figure shows a specific embodiment of this utility model.

[0026] 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.

[0027] 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.

[0028] like Figures 1 to 5 As shown, this alkaline solution circulating hydrogen sulfide removal device includes a tower body 1, a spray system installed inside the tower body, and an exhaust pipe 2 installed at the upper end of the tower body 1 for the discharge of biogas.

[0029] The sprinkler system includes three layers of sprinkler pipes 3, which are connected to the circulation pipe 15. Each layer of sprinkler pipes 3 has several pipes, which are installed in parallel on the connecting pipe 16. The connecting pipe is then installed on the circulation pipe. The sprinkler pipes 3 between adjacent layers are not parallel, preferably with an included angle of 60°. When viewed from top to bottom or bottom to top, the three layers of sprinkler pipes 3 are evenly distributed radially.

[0030] Each spray pipe 3 is equipped with several inclined nozzles 4. The inclination direction of two adjacent nozzles 4 is opposite, that is, with the central axis as the center, one is inclined to the left and the other to the right, and so on, so that the sprayed alkaline solution forms a seamless intersection.

[0031] The exhaust pipe 2 is divided into two sections: an upper section 201 and a lower section 202. The lower section 202 is thicker than the upper section 201. The upper section 201 and the lower section 202 are connected by a connecting joint 5. The connecting joint 5 consists of an outer cylinder 501 and an inner cylinder 502. The outer cylinder 501 is on the outside and the inner cylinder 502 is on the inside. The outer cylinder 501 and the inner cylinder 502 are connected by a connecting plate 6. The outer cylinder 501 is threaded to the lower section 202 through an internal thread, and the inner cylinder 502 is threaded to the upper section 201 through an external thread.

[0032] There is a lower inner flange 7 inside the lower section 202. During use, the lower end of the inner cylinder 502 rests on the lower inner flange 7.

[0033] There is an upper inner flange 8 inside the inner cylinder 502. An activated carbon filter cartridge 9 is installed inside the inner cylinder 502. The upper end of the activated carbon filter cartridge 9 rests on the upper inner flange 8, and the lower end rests on the lower flange.

[0034] The activated carbon filter cartridge 9 can be disposable or reusable, just like a bottle with a screw cap.

[0035] A sealing gasket 10 can be installed on the lower inner flange 7.

[0036] like Figure 7 As shown, in order to facilitate the installation of the activated carbon filter cartridge 9, the lower inner flange 7 can be designed in a stepped shape.

[0037] To enhance the seal between the outer cylinder 501 and the lower section 202, a lower ring plate 11 is installed on the outer wall of the outer cylinder 501. During operation, the lower end of the outer cylinder 501 contacts the lower ring plate 11.

[0038] To further enhance sealing, a lower sealing ring 12 is installed on the lower ring plate 11.

[0039] The upper end of the outer cylinder 501 is bent inward to form an annular plug 5011. There is an upper ring plate 13 on the outer wall of the upper section 201. During the operation of this utility model, the annular plug 5011 is in contact with the upper ring plate 13.

[0040] To enhance the seal, a sealing ring 14 is installed on the upper ring plate 13.

[0041] During operation, if it is necessary to replace the activated carbon, unscrew the outer cylinder 501 from the lower section 202, but at this time the inner cylinder 502 is still threadedly connected to the upper section 201. Place the activated carbon filter cartridge 9 on the lower inner flange 7, and then screw the outer cylinder 501 onto the lower section 202 until it can no longer be screwed. At this time, the lower end of the outer cylinder 501 presses on the lower sealing ring 12, the annular plug 5011 presses on the upper sealing ring 14, and the lower end of the inner cylinder 502 presses on the sealing gasket. The activated carbon filter cartridge 9 is sealed inside the inner cylinder 502.

[0042] In the present application, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; the term "multiple" refers to two or more than two, unless otherwise explicitly limited. The terms "mounting", "connecting", "connecting", "fixing" and other terms should be broadly understood, for example, "connecting" can be fixed connection, or detachable connection, or integrally connected; "connected" can be directly connected, or indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or units referred to must have a particular direction, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.

[0044] In the description of the present application, the terms "one embodiment", "some embodiments", "specific embodiments" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0045] The above is only the preferred embodiment of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

[0046] In addition to the technical features described in the specification, the remaining technical features are known to those skilled in the art.

Claims

1. An alkaline liquid circulation hydrogen sulfide removal device, comprising a tower body (1), a spraying system is arranged in the tower body (1), an exhaust pipe (2) is arranged at the upper end of the tower body (1), and activated carbon is arranged at the exhaust pipe (2), characterized in that, The spraying system comprises several parallel spraying pipes (3), each of which is provided with an inclined nozzle (4), and the inclined directions of two adjacent nozzles (4) are opposite; the exhaust pipe (2) comprises an upper section (201) and a lower section (202), the lower section (202) is thicker than the upper section (201), the upper section (201) and the lower section (202) are connected through a connecting joint (5), the connecting joint (5) comprises an outer cylinder (501) and an inner cylinder (502), the outer cylinder (501) and the inner cylinder (502) are connected through a connecting plate (6), the outer cylinder (501) is connected with the lower section (202) through internal threads, and the inner cylinder (502) is connected with the upper section (201) through external threads; the lower section (202) is internally provided with a lower inner flange (7), the inner cylinder (502) is internally provided with an upper inner flange (8), and the inner cylinder (502) is placed with an activated carbon filter cylinder (9), and the lower end of the inner cylinder (502) is abutted against the lower inner flange (7) during operation.

2. The caustic circulation hydrogen sulfide removal unit of claim 1, wherein, The outer wall of the lower section (202) is provided with a lower ring plate (11), and the lower end of the outer cylinder (501) is in contact with the lower ring plate (11) during operation.

3. The caustic circulation hydrogen sulfide removal unit of claim 2, wherein, The lower ring plate (11) is provided with a lower sealing ring (12).

4. The caustic circulation hydrogen sulfide removal unit of claim 1, wherein, The upper end of the outer cylinder (501) is inwardly bent into a ring-shaped plug (5011), the outer wall of the upper section (201) is provided with an upper ring plate (13), and the ring-shaped plug (5011) is in contact with the upper ring plate (13) during operation.

5. The caustic circulation hydrogen sulfide removal unit of claim 4, wherein, The upper ring plate (13) is provided with an upper sealing ring (14).

6. The caustic circulation hydrogen sulfide removal unit of claim 1, wherein, The spraying system comprises three layers of spraying pipes (3), and the adjacent two layers of spraying pipes (3) are not parallel.

7. The caustic circulation hydrogen sulfide removal unit of claim 6, wherein, The included angle between the adjacent two layers of spraying pipes (3) is 60°.

Images