Boiler with biogas purification structure

Abstract

The utility model discloses a boiler with a biogas purification structure, which comprises a box body, a biogas pipe is communicated below one side of the box body, a first transverse plate is fixedly connected below the inner wall of the box body, a second transverse plate is arranged above the first transverse plate and fixedly connected with the lower part of the inner wall of the box body, and the biogas pipe is communicated with the biogas pipe. The top of the second transverse plate is fixedly connected with a combustion bin, and the inner wall of one side of the combustion bin is fixedly connected with an air pipe. According to the boiler with the biogas purification structure, the box body, the first transverse plate, the second transverse plate, the first filter cloth, the pore plate and the second filter cloth are matched, so that the biogas can be purified in advance when entering the combustion bin to be combusted; further, the influence of sulfur-containing gas, moisture and particulate matters in the biogas on ambient air during combustion and after combustion can be reduced to the greatest extent, so that the combustion safety of the biogas and the quality of the ambient air can be effectively ensured.

Description

Technical Field

[0001] This utility model relates to the field of biogas technology, specifically a boiler with a biogas purification structure. Background Technology

[0002] Biogas, chemically known as methane, is, as the name suggests, a gas found in swamps. People often see bubbles rising from swamps, sewage ditches, or cesspools. If we strike a match, we can ignite it. This is naturally occurring biogas. Biogas is a combustible gas produced by the fermentation of various organic substances under conditions of isolation from air (reducing conditions) and at suitable temperature and pH values ​​through microbial fermentation. When burning biogas, a biogas combustion boiler is required.

[0003] Traditional biogas combustion boilers cannot purify the biogas entering the boiler. Unpurified biogas contains particulate matter, sulfur-containing gases, and moisture. These impurities affect the overall combustion quality of the biogas and produce harmful gases after combustion, making it inconvenient to use. If biogas needs to be pre-purified, it increases the amount of equipment required and prolongs the overall operation time, further inconveniencing the staff. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a boiler with a biogas purification structure. This solves the problem that traditional biogas combustion boilers cannot purify the biogas entering the boiler. Unpurified biogas contains particulate matter, sulfur-containing gases, and moisture, which affect the overall combustion quality and produce harmful gases after combustion, making it inconvenient to use. Pre-purifying the biogas increases the amount of equipment required and extends the overall operation time, further inconveniencing the operators.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a boiler with a biogas purification structure, comprising a housing, a biogas pipe connected to the lower side of one side of the housing, a first horizontal plate fixedly connected to the lower inner wall of the housing, a second horizontal plate fixedly connected to the lower inner wall of the housing above the first horizontal plate, a combustion chamber fixedly connected to the top of the second horizontal plate, an air pipe fixedly connected to the inner wall of one side of the combustion chamber, and one end of the air pipe extending to the lower side of one side of the housing, a first filter cloth fixedly connected to the lower inner wall of the housing on one side of the bottom of the first horizontal plate, a perforated plate fixedly connected to the bottom side of the first horizontal plate away from the first filter cloth, a second filter cloth fixedly connected to the top side of the first horizontal plate away from the first filter cloth by bolts, and a cover plate fixedly connected to the lower side of one side of the housing by bolts.

[0006] Preferably, a heat insulation box is fixedly connected to the top of the first horizontal plate, and the outer wall of the heat insulation box is fixedly connected to the inner wall of the box body.

[0007] Preferably, a gas duct runs through the top of the first horizontal plate; an ignition pipe is connected above the side of the combustion chamber near the biogas pipe, with one end of the ignition pipe extending above the side of the box body near the biogas pipe; a water inlet pipe is connected below the side of the insulation box near the biogas pipe, with the end of the water inlet pipe extending below the side of the box body near the biogas pipe; a water outlet pipe is connected above the side of the insulation box away from the water inlet pipe, with the end of the water outlet pipe extending above the side of the box body away from the biogas pipe; and an exhaust pipe is connected to the top side of the combustion chamber, with the end of the exhaust pipe extending above the box body.

[0008] Preferably, the inner wall of the combustion chamber is fixedly connected with multiple heat-conducting plates.

[0009] Preferably, a one-way valve is fixedly connected inside the gas pipe, a sealing cap is threaded to the end of the ignition pipe, and valves are installed in the water outlet pipe, water inlet pipe, biogas pipe, and air pipe.

[0010] Beneficial effects

[0011] This utility model provides a boiler with a biogas purification structure. It has the following advantages: Through the cooperation of the casing, first horizontal plate, second horizontal plate, first filter cloth, perforated plate, and second filter cloth, the boiler with the biogas purification structure can pre-purify the biogas before it enters the combustion chamber for combustion. This minimizes the impact of sulfur-containing gases, moisture, and particulate matter in the biogas on the surrounding air during and after combustion, thus effectively ensuring the safety of biogas combustion and the quality of the surrounding air. Furthermore, it eliminates the need for additional treatment equipment, reducing economic costs and shortening overall operating time.

[0012] By combining the heat insulation box, the box body, the combustion chamber, and the exhaust pipe, the heat loss during biogas combustion can be greatly reduced, and the heat in the exhaust gas can be reused through the exhaust pipe, which can greatly improve the energy utilization rate and make it more convenient for staff to use. Attached Figure Description

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

[0014] Figure 2 for Figure 1 A sectional view;

[0015] Figure 3 for Figure 2 A schematic diagram of the structure of the first horizontal plate, the first horizontal plate, and the second filter cloth;

[0016] Figure 4 for Figure 2 A schematic diagram of the combustion chamber, air duct, and air pipe.

[0017] In the diagram: 1. Box body; 2. Combustion chamber; 3. Ignition pipe; 4. Gas duct; 5. Water outlet pipe; 6. Water inlet pipe; 7. Air pipe; 8. First horizontal plate; 9. Biogas pipe; 10. First filter cloth; 11. Perforated plate; 12. Second filter cloth; 13. Second horizontal plate; 14. Cover plate; 15. One-way valve; 16. Heat-conducting plate; 17. Insulation box; 18. Exhaust pipe. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0020] Traditional biogas combustion boilers cannot purify the biogas entering the boiler. Unpurified biogas contains particulate matter, sulfur-containing gases, and moisture. These impurities affect the overall combustion quality of the biogas and produce harmful gases after combustion, making it inconvenient to use. If biogas needs to be pre-purified, it increases the amount of equipment required and prolongs the overall operation time, which inconveniences the staff.

[0021] In view of this, the present invention provides a boiler with a biogas purification structure, and the boiler with the biogas purification structure has the following beneficial effects, namely, the first point.

[0022] Example 1: By Figure 1 , 2As shown in section 3, a boiler with a biogas purification structure includes a housing 1. A biogas pipe 9 is connected to the lower side of one side of the housing 1. A first horizontal plate 8 is fixedly connected to the lower inner wall of the housing 1. A second horizontal plate 13 is fixedly connected to the lower inner wall of the housing 1 above the first horizontal plate 8. A combustion chamber 2 is fixedly connected to the top of the second horizontal plate 13. An air pipe 7 is fixedly connected to the inner wall of one side of the combustion chamber 2, and one end of the air pipe 7 extends to the lower side of one side of the housing 1. A first filter cloth 10 is fixedly connected to the lower inner wall of the housing 1 on one side of the bottom of the first horizontal plate 8. A perforated plate 11 is fixedly connected to the bottom side of the first horizontal plate 8 away from the first filter cloth 10. A second filter cloth 12 is fixedly connected to the top side of the first horizontal plate 8 away from the first filter cloth 10 by bolts. A cover plate 14 is fixedly connected to the lower side of one side of the housing 1 by bolts.

[0023] In the specific implementation process, it is worth noting that the first horizontal plate 8 and the second horizontal plate 13 are made of heat-resistant and heat-insulating materials. Composite splicing materials can be used if necessary. The specific materials and installation methods are not limited, as long as they meet the technical characteristics of this case. Furthermore, workers need to regularly disassemble and clean the first filter cloth 10 and the second filter cloth 12 to ensure the filtration quality of the first filter cloth 10 and the second filter cloth 12. Workers can place iron oxide between the first filter cloth 10 and the perforated plate 11, thereby utilizing the iron oxide to adsorb sulfur-containing gases in the biogas. The main reaction at room temperature is iron oxide (… Fe2O3 reacts directly with H2S to produce ferrous sulfide (FeS) or ferric sulfide (Fe2S3). A desiccant should be placed between the perforated plate 11 and the box 1 to adsorb and dry the moisture in the biogas. Of course, workers can also use other treatment agents to purify sulfur-containing gases and moisture in the biogas. This case does not impose any restrictions, as long as the usage requirements are met. It should be noted that workers should replace the treatment agent regularly. There are no restrictions on the specific replacement cycle, as long as the actual usage requirements are met. There are no restrictions on the mesh size of the first filter cloth 10 and the second filter cloth 12, as long as the usage requirements are met.

[0024] Furthermore, the top of the second horizontal plate 13 is fixedly connected to the heat insulation box 17, and the outer wall of the heat insulation box 17 is fixedly connected to the inner wall of the box body 1.

[0025] In the specific implementation process, it is worth noting that the heat insulation box 17 can greatly reduce the degree of heat loss, thereby improving energy utilization.

[0026] Specifically, when using a boiler with a biogas purification structure, when biogas enters the interior of the housing 1 through the biogas pipe 9, the biogas is first filtered for particles through the first filter cloth 10, then desulfurized through the first filter cloth 10, then adsorbed and dried by a desiccant through the perforated plate 11, and then filtered for particles again through the second filter cloth 12. At this point, the biogas purification work is completed, and then it can be used for combustion.

[0027] Example 2: From Figure 1 , 2 As can be seen from section 4, a gas guide pipe 4 runs through the top of the second horizontal plate 13, an ignition pipe 3 is connected to the top of the side of the combustion chamber 2 near the biogas pipe 9, and one end of the ignition pipe 3 extends to the top of the side of the box 1 near the biogas pipe 9, a water inlet pipe 6 is connected to the bottom of the side of the heat insulation box 17 near the biogas pipe 9, and the end of the water inlet pipe 6 extends to the bottom of the side of the box 1 near the biogas pipe 9, a water outlet pipe 5 is connected to the top of the side of the heat insulation box 17 away from the water inlet pipe 6, and the end of the water outlet pipe 5 extends to the top of the side of the box 1 away from the biogas pipe 9, and an exhaust pipe 18 is connected to the top of the combustion chamber 2, and the end of the exhaust pipe 18 extends to the top of the box 1.

[0028] In the specific implementation process, it is worth noting that the staff can use the ignition pipe 3 to ignite the biogas inside the combustion chamber 2, while the external water source can enter the interior of the heat insulation box 17 through the water inlet pipe 6, and after being heated, it will be discharged from the water outlet pipe 5. It should be noted that the staff installs a flue gas purification device at the end of the exhaust pipe 18, and then uses the flue gas purification device to purify the exhaust gas. This case does not make any structural or principle improvements to the flue gas purification device, so it will not be elaborated on. The staff can connect the flue gas purification device to the exhaust pipe 18 according to the actual use situation. Those skilled in the art should understand this in a broad sense.

[0029] Furthermore, multiple heat-conducting plates 16 are fixedly connected to the inner wall of the combustion chamber 2;

[0030] In the specific implementation process, it is worth noting that the heat-conducting plate 16 can improve the heating efficiency of the combustion chamber 2 for the water source;

[0031] Furthermore, a one-way valve 15 is fixedly connected inside the gas pipe 4, a sealing cap is threaded to the end of the ignition pipe 3, and valves are installed on the water outlet pipe 5, water inlet pipe 6, biogas pipe 9 and air pipe 7.

[0032] In the specific implementation process, it is worth noting that the one-way valve 15 can prevent the backflow of biogas inside the combustion chamber 2, the design of the sealing cover can prevent biogas and heat from escaping from the ignition pipe 3 during normal operation, and the design of the valve can make it more convenient for the staff to control the boiler with biogas purification structure.

[0033] Specifically, based on the above embodiment one, the staff injects external water into the interior of the heat insulation box 17 through the water inlet pipe 6. Then, when the biogas enters the interior of the combustion chamber 2 through the gas guide pipe 4, the staff simultaneously turns on the air pipe 7. At this time, the external gas supply device can inject air into the interior of the combustion chamber 2. Then, the biogas is ignited using the ignition pipe 3. At this time, the heat from the biogas combustion can be used to heat the water source. The heated water can then be discharged from the interior of the box 1 through the water outlet pipe 5.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A boiler with a biogas purification structure comprising a tank (1), characterized in that: The lower side of the box (1) is communicated with a biogas pipe (9), the lower inner wall of the box (1) is fixedly connected with a first horizontal plate (8), the upper side of the first horizontal plate (8) is provided with a second horizontal plate (13) fixedly connected with the lower inner wall of the box (1), the top of the second horizontal plate (13) is fixedly connected with a combustion bin (2), one side of the combustion bin (2) is fixedly connected with an air pipe (7), and one end of the air pipe (7) extends to the lower side of the box (1), the bottom of the first horizontal plate (8) is fixedly connected with a first filter cloth (10) fixedly connected with the lower inner wall of the box (1) on one side, the bottom of the first horizontal plate (8) is fixedly connected with a hole plate (11) on the side away from the first filter cloth (10), the top of the first horizontal plate (8) is fixedly connected with a second filter cloth (12) on the side away from the first filter cloth (10) through bolts, and the lower side of the box (1) is fixedly connected with a cover plate (14) through bolts.

2. A boiler with biogas cleaning structure according to claim 1, characterized in that: The top of the second horizontal plate (13) is fixedly connected with a heat insulation box (17), and the outer wall of the heat insulation box (17) is fixedly connected with the inner wall of the box (1).

3. A boiler with biogas cleaning structure according to claim 2, characterized in that: The upper side of the second horizontal plate (13) is communicated with a gas guide pipe (4), the upper side of the combustion bin (2) near the biogas pipe (9) is communicated with a lighter pipe (3), one end of the lighter pipe (3) extends to the upper side of the box (1) near the biogas pipe (9), the lower side of the heat insulation box (17) near the biogas pipe (9) is communicated with a water inlet pipe (6), and the tail end of the water inlet pipe (6) extends to the lower side of the box (1) near the biogas pipe (9), the upper side of the heat insulation box (17) away from the water inlet pipe (6) is communicated with a water outlet pipe (5), and the tail end of the water outlet pipe (5) extends to the upper side of the box (1) away from the biogas pipe (9), the top of the combustion bin (2) is communicated with an exhaust pipe (18), and the tail end of the exhaust pipe (18) extends to the upper side of the box (1).

4. The boiler with biogas cleaning structure according to claim 1, characterized in that: The inner wall of the combustion bin (2) is fixedly connected with a plurality of heat conducting plates (16).

5. The boiler with biogas cleaning structure according to claim 3, characterized in that: The inside of the gas guide pipe (4) is fixedly connected with a one-way valve (15), the tail end of the lighter pipe (3) is threadedly connected with a sealing cover, and the water outlet pipe (5), the water inlet pipe (6), the biogas pipe (9) and the air pipe (7) are all provided with valves.

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