Biogas desulfurization combustion device

Abstract

The utility model provides a methane desulfurization combustion device which comprises a desulfurization tank, a grating plate, a dehydration mechanism and a combustion mechanism, the desulfurization tank is arranged on the ground, the interior of the desulfurization tank is hollow, and a gas inlet is formed in the desulfurization tank; the grating plate is arranged in the desulfurization tank, and a desulfurization agent is arranged on the grating plate and is used for carrying out desulfurization treatment on the biogas; the dehydration mechanism is arranged in the desulfurization tank, is positioned on one side, close to the ground, of the grating plate, corresponds to the position of the gas inlet, and is used for dehydrating the biogas; the combustion mechanism is arranged on the side, away from the ground, of the desulfurization tank and communicates with the desulfurization tank, the combustion mechanism is used for combusting desulfurized tail gas, dehydration, desulfurization and tail gas combustion treatment are integrated, independent treatment is not needed, the occupied area is small, the treatment cost is low, and therefore the practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of biogas treatment, in particular to a biogas desulfurization combustion device. Background Art

[0002] When biogas is produced from anaerobic fermentation equipment, especially when fermented at medium or high temperatures, it carries a large amount of H2S. Since there is still a large amount of water vapor in the biogas, the water and H2S in the biogas work together to accelerate the corrosion and blockage of metal pipes, valves and flow meters. In addition, the SO2 generated after the combustion of H2S combines with the water vapor in the combustion products to form sulfurous acid, which causes corrosion on the metal surface of the equipment and also causes pollution to the atmospheric environment and affects human health. Therefore, before using the biogas, the H2S must be removed.

[0003] The biogas desulfurization and dehydration device with publication number CN106433833A includes a desulfurization and dehydration tank, a dehydration bottle group, a desulfurization bottle group and a gas storage tank which are arranged in sequence; the outlet pipe of the desulfurization and dehydration tank is connected to a first gas main pipe, the first gas main pipe is connected to a plurality of first gas branch pipes, the first gas branch pipes are connected to the dehydration bottle, the dehydration bottle group is connected to a second gas main pipe, the second gas main pipe is connected to a plurality of second gas branch pipes, the second gas branch pipe is connected to the desulfurization bottle, and the desulfurization bottle is connected to the gas storage tank; the desulfurization and dehydration tank includes a dehydration layer and a desulfurization layer arranged from bottom to top.

[0004] At present, the existing biogas needs to be dehydrated and desulfurized during the desulfurization process. However, in the existing biogas desulfurization devices, dehydration and desulfurization are both processed by separate equipment, which results in a large footprint and high processing costs, thereby reducing practicality. Utility Model Content

[0005] In view of this, the utility model proposes a biogas desulfurization and combustion device, which can dehydrate, desulfurize and burn tail gas of biogas, and integrate the dehydration, desulfurization and tail gas combustion treatment into one, without the need for separate treatment, thereby occupying a small area and having low processing cost, thereby improving practicality.

[0006] The technical solution of the utility model is implemented as follows: The utility model provides a biogas desulfurization combustion device, including a desulfurization tank, a grid plate, a dehydration mechanism and a combustion mechanism, wherein:

[0007] The desulfurization tank is placed on the ground and is hollow inside. An air inlet is provided on the desulfurization tank.

[0008] The grid plate is arranged in the desulfurization tank, and a desulfurizer is arranged on the grid plate for desulfurizing the biogas;

[0009] The dehydration mechanism is arranged in the desulfurization tank and is located on the side of the grid plate close to the ground and corresponds to the position of the air inlet. The dehydration mechanism is used to dehydrate the biogas;

[0010] The combustion mechanism is arranged on a side of the desulfurization tank away from the ground and is communicated with the desulfurization tank. The combustion mechanism is used for burning the tail gas after desulfurization.

[0011] On the basis of the above technical solution, preferably, the dehydration mechanism comprises a ring, a cylinder and a water baffle, wherein:

[0012] The annular member is fixed in the desulfurization tank, and the annular member is located on the side of the air inlet away from the ground, and a through hole is opened in the middle of the annular member;

[0013] The grid plate is arranged on a side of the annular member away from the ground;

[0014] The cylinder is fixed on the side of the annular member away from the grid plate, and the interior of the cylinder is hollow, with interconnected openings on both sides, the interior of the cylinder is connected to the through hole of the annular member, and the cylinder is spaced apart from the inner wall of the desulfurization tank;

[0015] The water-blocking plate is arranged in the cylinder body, and the water-blocking plate is provided with evenly distributed air holes, which are arranged in an inclined manner and are used for separating the water vapor of the biogas.

[0016] On the basis of the above technical solution, preferably, a connected drainage pipe is provided on the side of the desulfurization tank close to the ground, and a water valve is provided on the end of the drainage pipe away from the desulfurization tank for discharging water out of the desulfurization tank.

[0017] On the basis of the above technical solution, preferably, it further comprises a first connecting pipe, a valve, a flame arrester and a second connecting pipe, wherein:

[0018] The first connecting pipe is arranged on a side of the desulfurization tank away from the ground and is connected to the desulfurization tank;

[0019] The valve is arranged at one end of the first connecting pipe away from the desulfurization tank;

[0020] The flame arrester is arranged at one end of the valve away from the first communicating pipe, and is used to cut off the spread of flame;

[0021] The second communicating pipe is arranged at an end of the flame arrester away from the valve;

[0022] The combustion mechanism is arranged on a side of the second communicating pipe away from the flame arrester;

[0023] The desulfurized tail gas enters the combustion mechanism through the first connecting pipe and the second connecting pipe for combustion.

[0024] On the basis of the above technical solution, preferably, the combustion mechanism includes a connecting tube, a combustion tube and a burner, wherein:

[0025] The connecting tube is fixed on the outside of the second communicating pipe, and one end of the second communicating pipe penetrates and extends to the inside of the connecting tube;

[0026] The combustion cylinder is fixed on the outside of the connecting cylinder, and the inside of the combustion cylinder is connected with the inside of the connecting cylinder;

[0027] The burner is arranged in the connecting tube and is used for burning the desulfurized tail gas.

[0028] On the basis of the above technical solution, preferably, it also includes a protective cover and a rainproof member, wherein:

[0029] The protective cover is fixed on a side of the combustion tube away from the second connecting pipe, and the interior of the protective cover is connected to the interior of the combustion tube and the outside air respectively;

[0030] The rainproof piece is fixed in the protective cover and is used for shielding against rain.

[0031] On the basis of the above technical solution, preferably, it also includes a methane detector, an oxygen detector and a controller, wherein:

[0032] Both sides of the first connecting pipe are provided with interconnected branch pipes, and the methane detector and the oxygen detector are respectively fixed at the ends of the two branch pipes, and are used to detect the methane concentration and the oxygen concentration in the pipe respectively;

[0033] An electric control cabinet is fixedly installed on the outer side of the first connecting pipe, the controller is arranged in the electric control cabinet, and the methane detector and the oxygen detector are both electrically connected to the controller.

[0034] On the basis of the above technical solution, preferably, it also includes batteries and solar panels, wherein:

[0035] The battery is arranged in the electric control cabinet, and the battery is electrically connected to the controller to supply power to the controller;

[0036] The solar panel is arranged on the outside of the first connecting pipe and is used to store electricity for the battery.

[0037] On the basis of the above technical solution, preferably, a feed port is provided on the side of the desulfurization tank away from the ground for adding desulfurization agent into the desulfurization tank.

[0038] On the basis of the above technical solution, preferably, a discharge port is provided on the outer side of the desulfurization tank, and the discharge port corresponds to the height position of the grid plate, and is used to remove the desulfurizer from the desulfurization tank.

[0039] Compared with the prior art, the biogas desulfurization combustion device of the utility model has the following beneficial effects:

[0040] (1) The biogas enters the desulfurization tank from the air inlet, is first dehydrated by the dehydration mechanism, and then desulfurized by the desulfurizer on the grid plate. The desulfurized tail gas is burned by the combustion mechanism above the desulfurization tank and discharged into the air. This device integrates dehydration, desulfurization and tail gas combustion treatment into one, and does not need to be treated separately, so it occupies a small area and has low treatment cost, thereby improving practicality;

[0041] (2) The valve, flame arrester and second connecting pipe are arranged to ensure that biogas can enter the combustion mechanism safely and efficiently for combustion, thereby achieving effective treatment of the exhaust gas after desulfurization; this not only improves the efficiency of biogas treatment, but also enhances the safety performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 This is a schematic diagram of the structure of the biogas desulfurization combustion device of the utility model;

[0044] Figure 2 It is a cross-sectional view of the dehydration mechanism of the biogas desulfurization combustion device of the utility model;

[0045] Figure 3 It is a cross-sectional view of the combustion mechanism of the biogas desulfurization combustion device of the utility model;

[0046] Figure 4 This is a control block diagram of a controller for the biogas desulfurization combustion device of the utility model. DETAILED DESCRIPTION

[0047] The following will be combined with the implementation of the utility model to clearly and completely describe the technical solutions in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0048] like Figure 1-4 As shown, a biogas desulfurization combustion device of the utility model comprises a desulfurization tank 1, a grid plate 2, a dehydration mechanism 3 and a combustion mechanism 4.

[0049] Among them, the desulfurization tank 1 is arranged on the ground and is hollow inside, and an air inlet 100 is arranged on the desulfurization tank 1; a grille plate 2 is arranged in the desulfurization tank 1, and a desulfurizer is arranged on the grille plate 2 for desulfurizing biogas; a dehydration mechanism 3 is arranged in the desulfurization tank 1, and is located on the side of the grille plate 2 close to the ground and corresponds to the position of the air inlet 100, and the dehydration mechanism 3 is used to dehydrate biogas; a combustion mechanism 4 is arranged on the side of the desulfurization tank 1 away from the ground and is connected to the desulfurization tank 1, and the combustion mechanism 4 is used to burn the desulfurized exhaust gas.

[0050] It should be noted that the biogas enters the desulfurization tank from the air inlet, is first dehydrated by the dehydration mechanism, and then desulfurized by the desulfurizer on the grille plate. The desulfurized exhaust gas is burned by the combustion mechanism above the desulfurization tank and discharged into the air. This device integrates the three main steps of desulfurization, dehydration and combustion into one device, without the need for separate treatment, thus occupying a small area and having low treatment costs, thereby improving treatment efficiency and practicality.

[0051] In this embodiment, a feed port 110 is provided on the side of the desulfurization tank 1 away from the ground, which is used to add desulfurizer to the desulfurization tank 1; a discharge port 120 is provided on the outside of the desulfurization tank 1, and the discharge port 120 corresponds to the height position of the grid plate 2, which is used to remove the desulfurizer from the desulfurization tank 1.

[0052] It should be noted that the feed port arranged on the side of the desulfurization tank away from the ground allows the staff to easily add desulfurizer into the desulfurization tank; at the same time, the discharge port on the outside of the desulfurization tank corresponds to the height position of the grid plate, making the replacement of the desulfurizer simple and quick; this design not only improves work efficiency, but also reduces the difficulty of operation.

[0053] The dehydration mechanism 3 in this embodiment includes an annular member 31, a cylinder 32 and a water-blocking plate 33, wherein the annular member 31 is fixed in the desulfurization tank 1, and the annular member 31 is located on the side of the air inlet 100 away from the ground, and a through hole is opened in the middle of the annular member 31; the grille plate 2 is arranged on the side of the annular member 31 away from the ground; the cylinder 32 is fixed on the side of the annular member 31 away from the grille plate 2, and the interior of the cylinder 32 is hollow, and both sides are provided with interconnected openings, the interior of the cylinder 32 is connected to the through hole of the annular member 31, and the cylinder 32 is spaced apart from the inner wall of the desulfurization tank 1; the water-blocking plate 33 is arranged in the cylinder 32, and the water-blocking plate 33 is provided with evenly distributed pores 330, and the pores 330 are arranged at an angle for separating the water vapor of the biogas.

[0054] It should be noted that after the biogas enters the desulfurization tank 1 from the air inlet 100, it first encounters the annular member 31 located above the air inlet. The biogas can smoothly pass through and enter the space between the annular member 31 and the inner wall of the desulfurization tank 1. Then, the biogas enters the cylinder 32, which is an internally hollow structure with interconnected openings on both sides, so that the biogas can flow freely inside the cylinder 32. Inside the cylinder 32, a water-blocking plate 33 is provided, and the plate is evenly distributed with inclined pores 330. When the biogas flows through these pores, due to the inclined design of the pores 330, the water vapor in the biogas will be blocked when it contacts the pores 330 and flow down along the plate surface, thereby achieving the preliminary separation of the biogas and the water vapor. The dehydrated biogas continues to flow upward and passes through the grid plate 2 for desulfurization.

[0055] In addition, a connected drainage pipe 5 is provided on one side of the desulfurization tank 1 close to the ground, and a water valve 6 is provided on one end of the drainage pipe 5 away from the desulfurization tank 1 for discharging water out of the desulfurization tank 1 .

[0056] This embodiment also includes a first connecting pipe 7, a valve 8, a flame arrester 9 and a second connecting pipe 10, wherein the first connecting pipe 7 is arranged on the side of the desulfurization tank 1 away from the ground and is connected to the desulfurization tank 1; the valve 8 is arranged at the end of the first connecting pipe 7 away from the desulfurization tank 1; the flame arrester 9 is arranged at the end of the valve 8 away from the first connecting pipe 7, for cutting off the spread of flame; the second connecting pipe 10 is arranged at the end of the flame arrester 9 away from the valve 8; the combustion mechanism 4 is arranged on the side of the second connecting pipe 10 away from the flame arrester 9; the desulfurized exhaust gas passes through the first connecting pipe 7 and the second connecting pipe 10 into the combustion mechanism 4 for combustion.

[0057] It should be noted that the function of the valve 8 is to control the flow of biogas. When the combustion mechanism 4 needs to be inspected or an abnormal situation occurs, the supply of biogas can be cut off by closing the valve 8 to ensure safe operation. The main function of the flame arrester 9 is to cut off the spread of flame and avoid flame backflow caused by backfire or other reasons during the combustion of biogas, thereby protecting the safety of the desulfurization tank 1 and the entire device; and through the arrangement of the valve 8, the flame arrester 9 and the second connecting pipe 10, it is ensured that biogas can safely and efficiently enter the combustion mechanism 4 for combustion, thereby achieving effective treatment of the exhaust gas after desulfurization; not only the efficiency of biogas treatment is improved, but also the safety performance of the device is enhanced.

[0058] In this embodiment, the combustion mechanism 4 includes a connecting tube 41, a combustion tube 42 and a burner 43, wherein the connecting tube 41 is fixed on the outside of the second connecting pipe 10, and one end of the second connecting pipe 10 passes through and extends to the inside of the connecting tube 41; the combustion tube 42 is fixed on the outside of the connecting tube 41, and the inside of the combustion tube 42 is connected to the inside of the connecting tube 41; the burner 43 is arranged in the connecting tube 41, and is used to burn the desulfurized exhaust gas.

[0059] The burner 43 is an ignition device, which can ignite the biogas and make it burn completely, thereby releasing heat energy. The biogas desulfurization combustion device can effectively treat the exhaust gas after desulfurization, thereby improving the biogas treatment effect.

[0060] This embodiment also includes a protective cover 11 and a rainproof member 12, wherein the protective cover 11 is fixed on the side of the combustion tube 42 away from the second connecting pipe 10, and the interior of the protective cover 11 is respectively connected to the interior of the combustion tube 42 and the outside air; the rainproof member 12 is fixed in the protective cover 11 for sheltering from rain.

[0061] It should be noted that the rainproof part 12 can effectively prevent rainwater from entering the protective cover 11 and the combustion tube 42, avoiding moisture from interfering with the combustion process or damaging the burner 43 and other components; it effectively ensures that the biogas desulfurization combustion device can operate normally under severe weather conditions, thereby improving its applicability and reliability.

[0062] This embodiment also includes a methane detector 13, an oxygen detector 14 and a controller 15, wherein both sides of the first connecting pipe 7 are provided with interconnected branch pipes, and the methane detector 13 and the oxygen detector 14 are respectively fixed at the ends of the two branch pipes, and are respectively used to detect the methane concentration and the oxygen concentration in the pipe; an electric control cabinet is fixedly installed on the outer side of the first connecting pipe 7, and the controller 15 is arranged in the electric control cabinet, and the methane detector 13 and the oxygen detector 14 are both electrically connected to the controller 15.

[0063] It should be noted that the methane concentration and oxygen concentration in the pipeline are detected by the methane detector 13 and the oxygen detector 14. Too high a methane concentration may lead to an explosion risk, while too low an oxygen concentration may affect the combustion effect, thereby effectively avoiding potential safety risks and improving the safety of the device. When the methane detection reaches a threshold value, the controller 15 is used to cut off the biogas supply. When the oxygen is higher or lower than the threshold value, the controller 15 is used to control and adjust the biogas flow rate, thereby effectively ensuring the stable operation of the device.

[0064] This embodiment also includes a battery 16 and a solar panel 17, wherein the battery 16 is arranged in the electric control cabinet, and the battery 16 is electrically connected to the controller 15 for supplying power to the controller 15; the solar panel 17 is arranged on the outside of the first connecting pipe 7 for storing electricity for the battery 16.

[0065] It should be noted that the solar panel 17 can convert solar energy into electrical energy which is stored in the battery 16, thereby reducing energy consumption and helping to reduce carbon emissions.

[0066] Working principle:

[0067] After the biogas enters the desulfurization tank 1 from the air inlet 100, it first enters the space between the annular member 31 and the inner wall of the desulfurization tank 1, and enters the inside from the bottom of the cylinder 32 along the outer side of the cylinder 32. The water-blocking plate 33 is evenly distributed with inclined air holes 330. When the biogas flows through the air holes 330, due to the inclined design of the air holes 330, the water vapor in the biogas will be blocked when it contacts the air holes 330 and flow down along the plate surface, thereby realizing the preliminary separation of the biogas and the water vapor. The dehydrated biogas continues to flow upward and is desulfurized through the grille plate 2. The exhaust gas after desulfurization enters the connecting cylinder 41 through the first connecting pipe 7, the valve 8, the flame arrester 9 and the second connecting pipe 10. The burner 43 arranged in the connecting cylinder 41 burns the desulfurized exhaust gas.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A biogas desulfurization combustion device, characterized in that: It comprises a desulfurization tank (1), a grid plate (2), a dehydration mechanism (3) and a combustion mechanism (4), wherein: The desulfurization tank (1) is arranged on the ground and is hollow inside. The desulfurization tank (1) is provided with an air inlet (100); The grid plate (2) is arranged in the desulfurization tank (1), and a desulfurizer is arranged on the grid plate (2) for desulfurizing the biogas; The dehydration mechanism (3) is arranged in the desulfurization tank (1) and is located on a side of the grid plate (2) close to the ground and corresponds to the position of the air inlet (100). The dehydration mechanism (3) is used to dehydrate the biogas. The combustion mechanism (4) is arranged on a side of the desulfurization tank (1) away from the ground and is connected to the desulfurization tank (1). The combustion mechanism (4) is used to burn the desulfurized tail gas.

2. The biogas desulfurization combustion device according to claim 1, characterized in that: The dehydration mechanism (3) comprises a ring member (31), a cylinder (32) and a water baffle (33), wherein: The annular member (31) is fixed in the desulfurization tank (1), and the annular member (31) is located on a side of the air inlet (100) away from the ground, and a through hole is opened in the middle of the annular member (31); The grid plate (2) is arranged on a side of the annular member (31) away from the ground; The cylinder (32) is fixed on a side of the annular member (31) away from the grid plate (2), and the interior of the cylinder (32) is hollow, with openings connected to each other on both sides. The interior of the cylinder (32) is connected to the through hole of the annular member (31), and the cylinder (32) is spaced apart from the inner wall of the desulfurization tank (1); The water-blocking plate (33) is arranged in the cylinder (32). The water-blocking plate (33) is provided with evenly distributed air holes (330). The air holes (330) are arranged in an inclined manner and are used to separate water vapor from the biogas.

3. The biogas desulfurization combustion device according to claim 2, characterized in that: A connected drainage pipe (5) is provided on the side of the desulfurization tank (1) close to the ground, and a water valve (6) is provided on the end of the drainage pipe (5) away from the desulfurization tank (1) for discharging water out of the desulfurization tank (1).

4. The biogas desulfurization combustion device according to claim 1, characterized in that: It also includes a first communicating pipe (7), a valve (8), a flame arrester (9) and a second communicating pipe (10), wherein: The first connecting pipe (7) is arranged on a side of the desulfurization tank (1) away from the ground and is connected to the desulfurization tank (1); The valve (8) is arranged at an end of the first connecting pipe (7) away from the desulfurization tank (1); The flame arrester (9) is arranged at one end of the valve (8) away from the first connecting pipe (7) and is used to cut off the spread of flame; The second communication pipe (10) is arranged at an end of the flame arrester (9) away from the valve (8); The combustion mechanism (4) is arranged on a side of the second connecting pipe (10) away from the flame arrester (9); The desulfurized tail gas passes through the first connecting pipe (7) and the second connecting pipe (10) and enters the combustion mechanism (4) for combustion.

5. The biogas desulfurization combustion device according to claim 4, characterized in that: The combustion mechanism (4) comprises a connecting tube (41), a combustion tube (42) and a burner (43), wherein: The connecting tube (41) is fixed on the outside of the second communicating pipe (10), and one end of the second communicating pipe (10) passes through and extends to the inside of the connecting tube (41); The combustion cylinder (42) is fixed on the outside of the connecting cylinder (41), and the interior of the combustion cylinder (42) is connected to the interior of the connecting cylinder (41); The burner (43) is arranged in the connecting tube (41) and is used to burn the desulfurized tail gas.

6. The biogas desulfurization combustion device according to claim 5, characterized in that: It also includes a protective cover (11) and a rainproof member (12), wherein: The protective cover (11) is fixed on a side of the combustion cylinder (42) away from the second connecting pipe (10), and the interior of the protective cover (11) is respectively connected to the interior of the combustion cylinder (42) and the outside air; The rainproof member (12) is fixed in the protective cover (11) and is used for shielding against rain.

7. The biogas desulfurization combustion device according to claim 4, characterized in that: It also includes a methane detector (13), an oxygen detector (14) and a controller (15), wherein: Both sides of the first connecting pipe (7) are provided with interconnected branch pipes, and the methane detector (13) and the oxygen detector (14) are respectively fixed at the ends of the two branch pipes, and are used to detect the methane concentration and the oxygen concentration in the pipe respectively; An electric control cabinet is fixedly installed on the outer side of the first connecting pipe (7), the controller (15) is arranged in the electric control cabinet, and the methane detector (13) and the oxygen detector (14) are both electrically connected to the controller (15).

8. The biogas desulfurization combustion device according to claim 7, characterized in that: It also includes a storage battery (16) and a solar panel (17), wherein: The storage battery (16) is arranged in the electric control cabinet, and the storage battery (16) is electrically connected to the controller (15) for supplying power to the controller (15); The solar panel (17) is arranged outside the first connecting pipe (7) and is used to store electricity for the storage battery (16).

9. The biogas desulfurization combustion device according to claim 1, characterized in that: A feed port (110) is provided on the side of the desulfurization tank (1) away from the ground, for adding a desulfurizing agent into the desulfurization tank (1).

10. The biogas desulfurization combustion device according to claim 1, characterized in that: The outer side of the desulfurization tank (1) is provided with a material removal port (120), the material removal port (120) corresponds to the height position of the grid plate (2), and is used to remove the desulfurization agent from the desulfurization tank (1).

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