High-efficiency renewable packing tower for crude desulfurization of biomass biogas

Abstract

The utility model discloses a kind of high-efficiency renewable packing tower for biomass biogas rough desulfurization, comprising: packing tower, the right side bottom of the packing tower is equipped with air inlet, the top of the packing tower is equipped with exhaust port, the bottom left side of the packing tower is inserted with drain pipe;Aeration mechanism, the inner chamber bottom of the packing tower is installed with aeration mechanism, the inner chamber middle of the packing tower is installed with porous ceramic packing, the rear end bottom of the packing tower is installed with spray cleaning mechanism, by alkaline catalyst spraying mechanism, it is convenient to spray out catalytic material, make alkaline catalytic water mist promote sulfur disulfuration reaction, make it partly dissolve, make porous ceramic packing blocked sulfur dissolve cleaning, by spray cleaning mechanism, after the biogas filtered by spray pipe and spray head to porous ceramic packing, and when the device is cleaned, sulfur after porous ceramic packing dissolves can be sprayed and washed, ensure that porous ceramic packing cleaning effectiveness.

Description

Technical Field

[0001] This utility model relates to the field of packed tower technology, and in particular to a high-efficiency renewable packed tower for crude desulfurization of biomass biogas. Background Technology

[0002] The high-efficiency renewable packed tower for coarse desulfurization of biomass biogas is developed under the macro-driven energy transition and environmental protection policies to address the technical and economic challenges of sulfuric acid removal in large-scale biogas projects. It integrates traditional chemical packed tower technology, chemical regeneration principles, and modern biological desulfurization technology.

[0003] In existing high-efficiency renewable packed towers for preliminary desulfurization of biomass biogas, if the elemental sulfur produced by the regeneration reaction cannot be oxidized into sulfate by microorganisms in time, it will gradually deposit on the surface and pores of the packing material, leading to channel blockage. However, when the porous ceramic packing material in the existing packed tower becomes blocked, it is necessary to disassemble the packed tower and clean the porous ceramic packing material. The convenience of the cleaning process is limited. Therefore, it is necessary to provide a new high-efficiency renewable packed tower for preliminary desulfurization of biomass biogas to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency renewable packed tower for the crude desulfurization of biomass biogas, so as to solve the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-efficiency renewable packed tower for crude desulfurization of biomass biogas, comprising: a packed tower, wherein an air inlet is provided at the bottom right side of the packed tower, an exhaust outlet is provided at the top of the packed tower, and a drain pipe is inserted into the bottom left side of the packed tower. An aeration mechanism is installed at the bottom of the inner cavity of the packed tower. A porous ceramic packing is installed in the middle of the inner cavity of the packed tower. A spray cleaning mechanism is installed at the bottom of the rear end of the packed tower. A demister is installed at the upper end of the inner cavity of the packed tower. An alkaline catalyst spraying mechanism is installed at the upper end of the porous ceramic packing, and the alkaline catalyst spraying mechanism is installed on the packed tower.

[0006] As a further description of the above technical solution: the aeration mechanism includes two sets of annular pipes installed at the bottom of the inner cavity of the packing tower. The annular pipes are connected by a connecting pipe in a crisscross pattern in the middle. An air inlet pipe is connected to the right side of the connecting pipe. A valve is installed at the upper end of the air inlet pipe.

[0007] As a further description of the above technical solution: an aeration pipe is inserted at equal intervals at the upper end of the annular pipe, and a one-way valve is installed in the inner cavity of the aeration pipe.

[0008] As a further description of the above technical solution: the spray cleaning mechanism includes a fixed plate fixedly connected to the bottom left side of the packing tower, a water pump is installed on the upper surface of the fixed plate, a connecting pipe is connected to the upper end of the water pump, and a water injection pipe is inserted into the bottom rear end of the connecting pipe.

[0009] As a further description of the above technical solution: the top of the connecting pipe is fixedly connected to a connecting pipe, and the right side of the connecting pipe is equidistantly connected to a spray pipe, which is inserted into the packed tower, and the bottom of the spray pipe is equidistantly inserted with several nozzles.

[0010] As a further description of the above technical solution: the alkaline catalyst spraying mechanism includes a connecting column installed on a packed tower, a plurality of water mist nozzles are inserted at equal intervals at the upper end of the connecting column, a catalytic flow pipe is connected to the bottom right side of the connecting column, a catalyst valve is installed on one side of the catalytic flow pipe, a pneumatic pump is installed at the bottom of the catalytic flow pipe, and an alkaline catalyst tank is connected to the power output end of the pneumatic pump.

[0011] This invention provides a high-efficiency, renewable packed tower for the initial desulfurization of biomass biogas. It has the following beneficial effects: By setting up an alkaline catalyst spraying mechanism, the alkaline catalyst in the alkaline catalyst tank is easily extracted into the water mist nozzle for spraying via a pneumatic pump and alkaline catalyst tank. The catalyst flow pipe and catalyst valve are set up to facilitate the opening and closing of the catalyst tank. The water mist nozzle is set up to facilitate the spraying of the catalyst, so that the alkaline catalytic water mist promotes the disproportionation reaction of sulfur, causing it to partially dissolve and dissolve and clean the sulfur that is blocked by the porous ceramic packing. The device is equipped with a spray cleaning mechanism. A water pump can be used to draw water from the bottom of the inner cavity of the packing tower or water from the water injection pipe into the connecting pipe. The spray pipe and nozzles can then spray the biogas filtered by the porous ceramic packing. In addition, during the cleaning process, the device can also spray and rinse the dissolved sulfur from the porous ceramic packing, ensuring the effectiveness of the cleaning. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a high-efficiency renewable packed tower for crude desulfurization of biomass biogas proposed in this utility model. Figure 2 This is a schematic diagram of the structure analyzed in this utility model; Figure 3 This is a schematic diagram of the aeration mechanism in this utility model; Figure 4 This is a schematic diagram of the spray cleaning mechanism in this utility model; Figure 5 This is a schematic diagram of the alkaline catalyst spraying mechanism in this utility model.

[0013] Legend: 1. Packed tower; 2. Air inlet; 3. Exhaust outlet; 4. Drain pipe; 5. Aeration mechanism; 501. Annular pipe; 502. Connecting pipe; 503. Air inlet pipe; 504. Valve; 505. Aeration pipe; 506. Check valve; 6. Porous ceramic packing; 7. Spray cleaning mechanism; 701. Fixing plate; 702. Water pump; 703. Water injection pipe; 704. Connecting pipe; 705. Connecting pipe; 706. Spray pipe; 707. Spray head; 8. Demister; 9. Alkaline catalyst spraying mechanism; 901. Connecting column; 902. Water mist nozzle; 903. Catalyst flow pipe; 904. Catalyst valve; 905. Pneumatic pump; 906. Alkaline catalyst tank. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Example 1, Reference Figure 1 and Figure 2 This utility model discloses a high-efficiency renewable packed tower for crude desulfurization of biomass biogas, which can solve the problem that when the porous ceramic packing in the existing packed tower is blocked, it is necessary to disassemble the packed tower and clean the porous ceramic packing, which has limited convenience in the cleaning process. The tower includes a packed tower 1, an air inlet 2 at the bottom right side of the packed tower 1, an exhaust outlet 3 at the top of the packed tower 1, and a drain pipe 4 inserted at the bottom left side of the packed tower 1. An aeration mechanism 5 is installed at the bottom of the inner cavity of the packed tower 1. A porous ceramic packing 6 is installed in the middle of the inner cavity of the packed tower 1. A spray cleaning mechanism 7 is installed at the bottom of the rear end of the packed tower 1. A demister 8 is installed at the upper end of the inner cavity of the packed tower 1. An alkaline catalyst spraying mechanism 9 is installed at the upper end of the porous ceramic packing 6, and the alkaline catalyst spraying mechanism 9 is installed on the packed tower 1.

[0016] Working principle: Packed tower 1 facilitates component installation; air inlet 2 facilitates the intake of biogas requiring desulfurization; exhaust port 3 facilitates the discharge of desulfurized gas; drain pipe 4 facilitates the discharge of desulfurized waste liquid at the bottom of the inner cavity of packed tower 1; aeration mechanism 5 facilitates the injection of oxygen into the desulfurized waste liquid at the bottom of the inner cavity of packed tower 1, enabling chemical regeneration of the packing and microbial oxidation of sulfur into sulfate; porous ceramic packing 6 facilitates the use of biogas for desulfurization; spray cleaning mechanism 7 facilitates the spraying of biogas and the cleaning of porous ceramic packing 6; demister 8 facilitates the demisting of desulfurized biogas; alkaline catalyst spraying mechanism 9 facilitates the spraying of catalysts, allowing alkaline catalytic water mist to promote the disproportionation reaction of sulfur, causing it to partially dissolve.

[0017] Example 2, refer to Figure 3 , Figure 4 and Figure 5 This embodiment solves the problem that existing porous ceramic packing in packed towers requires disassembling the tower and cleaning the packing when it becomes clogged, which is inconvenient during the cleaning process. This high-efficiency renewable packed tower for biomass biogas desulfurization further includes an aeration mechanism 5 comprising two sets of annular pipes 501 located at the bottom of the inner cavity of the packed tower 1. A connecting pipe 502 is crisscrossed between the annular pipes 501, and an air inlet pipe 503 is connected to the right side of the connecting pipe 502. A valve 504 is installed at the upper end of the air inlet pipe 503. Aeration pipes 505 are equidistantly inserted at the upper end of the annular pipes 501, and a one-way valve 506 is installed inside the aeration pipe 505. A spray cleaning mechanism 7 includes a fixing plate 701 fixedly connected to the bottom left side of the packed tower 1, and a water pump 702 is installed on the upper surface of the fixing plate 701. The upper end of the water pump 702 is connected to a connecting pipe 704. A water injection pipe 703 is inserted into the bottom rear end of the connecting pipe 704. A connecting pipe 705 is fixedly connected to the top of the connecting pipe 704. A spray pipe 706 is equidistantly connected to the right side of the connecting pipe 705. The spray pipe 706 is inserted into the packed tower 1. Several nozzles 707 are equidistantly inserted into the bottom of the spray pipe 706. The alkaline catalyst spraying mechanism 9 includes a connecting column 901 installed on the packed tower 1. Several water mist nozzles 902 are equidistantly inserted into the upper end of the connecting column 901. A catalyst flow pipe 903 is connected to the bottom right side of the connecting column 901. A catalyst valve 904 is installed on one side of the catalyst flow pipe 903. A pneumatic pump 905 is installed at the bottom of the catalyst flow pipe 903. The power output end of the pneumatic pump 905 is connected to the alkaline catalyst tank 906.

[0018] Working Principle: When this device is in use, connect the biogas inlet 2. While the biogas passes through the porous ceramic packing 6 for desulfurization, connect the water source to the water injection pipe 703 and turn on the water pump 702. The water pump 702 draws the water source or the wastewater remaining at the bottom of the inner cavity of the packing tower 1 into the connecting pipe 704, so that the spray pipe 706 and the nozzle 707 spray the biogas filtered by the porous ceramic packing 6. This facilitates the countercurrent contact between the water curtain under the spray and the rising biogas. The H2S gas molecules in the biogas will dissolve into the water droplets, realizing the transfer from the gas phase to the liquid phase. It can also cool the porous ceramic packing 6 and the desulfurized biogas. The demister 8 is provided to facilitate the demisting of the sprayed water mist. When the porous ceramic packing 6 is blocked and needs cleaning, the pneumatic pump 905 and the alkaline catalyst tank 906 facilitate the extraction of alkaline catalyst from the alkaline catalyst tank 906. The water mist is sprayed through the nozzle 902. The alkaline catalyst tank 906 is controlled via a catalytic flow pipe 903 and a catalyst valve 904. The water mist nozzle 902 facilitates the spraying of the catalyst, allowing the alkaline catalytic water mist to promote the disproportionation reaction of sulfur, partially dissolving it and clearing the sulfur clogging the porous ceramic packing 6. After the alkaline catalytic water mist is sprayed, the spray cleaning mechanism 7 sprays and washes away the dissolved sulfur from the porous ceramic packing 6, ensuring effective cleaning. Before discharging the desulfurization wastewater from the packing tower 1, the oxygen tank is connected to the inlet pipe 503, and the valve 504 is opened, allowing the aeration pipe 505 on the annular pipe 501 to inject oxygen into the desulfurization wastewater. This allows for chemical regeneration of the packing and microbial oxidation of the sulfur into sulfate. Finally, the drain pipe 4 is opened for collection of the desulfurization wastewater.

[0019] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example 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.

[0020] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency renewable packing tower for crude desulfurization of biomass biogas, characterized in that, include: A packed tower (1) has an air inlet (2) at the bottom right side, an exhaust outlet (3) at the top, and a drain pipe (4) inserted at the bottom left side of the packed tower (1). An aeration mechanism (5) is installed at the bottom of the inner cavity of the packed tower (1). A porous ceramic packing (6) is installed in the middle of the inner cavity of the packed tower (1). A spray cleaning mechanism (7) is installed at the bottom of the rear end of the packed tower (1). A demister (8) is installed at the upper end of the inner cavity of the packed tower (1). An alkaline catalyst spraying mechanism (9) is installed at the upper end of the porous ceramic packing (6). The alkaline catalyst spraying mechanism (9) is installed on the packed tower (1).

2. The high-efficiency renewable packing column for crude desulfurization of biomass biogas according to claim 1, characterized in that, The aeration mechanism (5) includes two sets of annular pipes (501) placed at the bottom of the inner cavity of the packed tower (1). The annular pipes (501) are connected by a connecting pipe (502) in a crisscross pattern in the middle. The connecting pipe (502) is connected to an air inlet pipe (503) on the right side. A valve (504) is installed at the upper end of the air inlet pipe (503).

3. The high-efficiency renewable packing column for crude desulfurization of biomass biogas according to claim 2, characterized in that, The upper end of the annular tube (501) is equidistantly provided with aeration tubes (505), and the inner cavity of the aeration tube (505) is equipped with a one-way valve (506).

4. The high-efficiency renewable packing column for crude desulfurization of biomass biogas according to claim 1, characterized in that, The spray cleaning mechanism (7) includes a fixed plate (701) fixedly connected to the bottom left side of the packed tower (1). A water pump (702) is installed on the upper surface of the fixed plate (701). A connecting pipe (704) is connected to the upper end of the water pump (702). A water injection pipe (703) is inserted at the bottom rear end of the connecting pipe (704).

5. The high-efficiency renewable packing column for crude desulfurization of biomass biogas according to claim 4, characterized in that, The top of the connecting pipe (704) is fixedly connected to the connecting pipe (705), and the right side of the connecting pipe (705) is equidistantly connected to the spray pipe (706), and the spray pipe (706) is inserted on the packed tower (1), and a number of nozzles (707) are equidistantly inserted at the bottom of the spray pipe (706).

6. The high-efficiency renewable packing column for crude desulfurization of biomass biogas according to claim 1, characterized in that, The alkaline catalyst spraying mechanism (9) includes a connecting column (901) installed on the packed tower (1). Several water mist nozzles (902) are inserted at equal intervals at the upper end of the connecting column (901). A catalyst flow pipe (903) is connected to the bottom right side of the connecting column (901). A catalyst valve (904) is installed on one side of the catalyst flow pipe (903). A pneumatic pump (905) is installed at the bottom of the catalyst flow pipe (903). The power output end of the pneumatic pump (905) is connected to an alkaline catalyst tank (906).

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