Biomass combustion furnace with flue gas purification function

Abstract

The utility model relates to the technical field of combustion furnaces, in particular to a biomass combustion furnace with a flue gas purification function, which comprises a furnace body, the top of the furnace body is fixedly communicated with a gas outlet pipe, and the outer wall of one side of the gas outlet pipe is provided with three slots at intervals along the height direction of the gas outlet pipe. A first filter plate, a second filter plate and an activated carbon adsorption plate are arranged in the three inserting grooves respectively and are sequentially distributed from bottom to top, filter holes of the second filter plate are smaller than those of the first filter plate, and a water tank is arranged on the outer side of the air outlet pipe in a sleeving mode and placed on the top of the furnace body. One side of the water tank fixedly communicates with a circulating water pump, the other end of the circulating water pump communicates with a refrigeration box, and the refrigeration box communicates with the water tank through a circulating water pipe; the biomass combustion device is simple in structure, convenient and fast to operate and capable of purifying smoke generated after biomass is combusted.

Description

Technical Field

[0001] The utility model relates to the technical field of combustion furnaces, in particular to a biomass combustion furnace with a flue gas purification function. Background Technique

[0002] A biomass combustion furnace is a thermal energy device designed to process biomass fuels. It usually adopts a horizontally placed structure, with a combustion chamber and combustion medium (such as biomass materials like wood chips, straws, and wood slices) placed inside the furnace. When the fuel burns inside the furnace, the released thermal energy is transferred to the heat carrier (such as water or air) through the heat transfer structure of the furnace body, and is used for heating buildings, generating electricity, or other thermal energy utilization.

[0003] After retrieval, the Chinese patent with the publication number CN205372528U discloses a horizontal biomass combustion furnace. In a horizontal biomass combustion furnace, four grates are placed end-to-end and lapped on four lapping columns. Above the grates inside the furnace body is the furnace chamber, and below the grates is the air box. An inlet is provided at the right end of the furnace body, and the inlet communicates with the furnace chamber. A flame outlet is opened at the position corresponding to the left end of the furnace body inside the furnace. The leftmost end inside the furnace body is the ash chamber. A blower is provided on the right side of the furnace body. The furnace cover is a hollow structure composed of an inner wall and an outer wall. A plurality of air equalizing openings are opened on the inner wall of the furnace cover, and the outlet ends of the air equalizing openings all face the direction of the flame outlet. The air outlet of the blower is simultaneously communicated with the air box and the hollow structure of the furnace cover. As an intermediate combustion medium, the biomass fuel is put into this furnace for combustion, and then the flame outlet of the biomass combustion furnace is directly docked with the furnace chamber of a boiler or a blast furnace, so as to achieve the purpose of burning biomass fuel in the boiler or blast furnace, saving the transformation cost, having high combustion efficiency, being energy-saving and environment-friendly. The patent records the technical solution of putting the biomass fuel into this furnace for combustion, and then directly docking the flame outlet of the biomass combustion furnace with the furnace chamber of a boiler or a blast furnace, so as to achieve the purpose of burning biomass fuel in the boiler or blast furnace, saving the transformation cost, having high combustion efficiency, being energy-saving and environment-friendly.

[0004] The above device achieves the effects of low cost and high combustion rate. However, harmful gases are generated after the biomass burns, and the device directly discharges the harmful gases into the air, resulting in air pollution, reducing air quality, and endangering the physical and mental health of the staff. Content of the Utility Model

[0005] The main technical problem to be solved by the utility model is to provide a biomass combustion furnace with a flue gas purification function, which has a simple structure, is convenient to operate, and can purify the flue gas generated after the biomass burns.

[0006] To solve the above technical problem, the utility model provides the following technical solutions:

[0007] A biomass combustion furnace with flue gas purification function, comprising a furnace body. A gas outlet pipe is fixedly communicated with the top of the furnace body. Three slots are spaced along the height direction on the outer wall of one side of the gas outlet pipe. A first filter plate, a second filter plate and an activated carbon adsorption plate are respectively arranged in the three slots. The first filter plate, the second filter plate and the activated carbon adsorption plate are distributed from bottom to top in sequence. And the filter holes of the second filter plate are smaller than those of the first filter plate. A water tank is sleeved outside the gas outlet pipe, and the water tank is placed on the top of the furnace body. One side of the water tank is fixedly communicated with a circulating water pump. The other end of the circulating water pump is communicated with a refrigeration box. The refrigeration box is connected with the water tank through a circulating water pipe.

[0008] The following is the further optimization of the above technical solution by the present utility model:

[0009] A water adding pipe is fixedly communicated with the top of the refrigeration box. The top of the water adding pipe is threadedly connected with a sealing cover.

[0010] Further optimization: Pull openings are respectively formed through the tops of the first filter plate, the second filter plate and the activated carbon adsorption plate near one end thereof.

[0011] Further optimization: A feeding pipe is fixedly communicated with the top of the furnace body. A cover plate is inserted into the top of the feeding pipe. A handle is fixedly installed on the top of the cover plate. A handle sleeve is sleeved on the handle. The handle sleeve is made of heat-insulating material.

[0012] Further optimization: An igniter is fixedly installed on the outer side wall of the furnace body through a connecting member. The ignition end of the igniter penetrates through the furnace body and extends into its interior.

[0013] Further optimization: A blower is arranged on one side of the furnace body. The blower is fixedly installed on the furnace body through a support plate.

[0014] Further optimization: The air outlet end of the blower is fixedly communicated with an air inlet pipe. The other end of the air inlet pipe penetrates through the furnace body and extends into the interior of the furnace body.

[0015] Further optimization: A support frame is fixedly arranged on the inner wall of the lower part of the furnace body. A grate is placed on the top of the support frame.

[0016] Further optimization: An ash collection drawer is slidably arranged on the furnace body below the grate.

[0017] By arranging the first filter plate, the second filter plate and the activated carbon adsorption plate to be distributed from bottom to top in sequence, the present utility model can perform multi-stage filtration and treatment on the flue gas generated by combustion. Different filter plates can remove pollutants of different sizes and properties, and the activated carbon adsorption plate can effectively adsorb peculiar smells and some harmful gases, thereby significantly improving the emission quality of the flue gas, reducing environmental pollution and protecting human health.

[0018] In the present utility model, a water tank is sleeved outside the air outlet pipe. The water in the water tank enters the refrigeration box through a circulating water pump for cooling, and then returns to the water tank through a circulating water pipe, forming a circulating cooling system. This system can not only cool down the high-temperature flue gas passing through, which helps protect the subsequent pipelines and treatment equipment and extends their service life, but also make full use of water resources, reduce water consumption. At the same time, the use of the refrigeration box can improve the cooling efficiency and achieve the purpose of energy conservation. In long-term operation, the energy cost can be reduced.

[0019] Adopting the above technical solution, the structure of the present utility model is simple and the operation is convenient, and it can purify the flue gas generated after the combustion of biomass. Brief Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0021] Figure 2 It is a schematic diagram of the internal structure of the furnace body in an embodiment of the present utility model;

[0022] Figure 3 It is a schematic diagram of the internal structure of the air outlet pipe in an embodiment of the present utility model.

[0023] In the figure: 1 - furnace body; 2 - air outlet pipe; 3 - slot; 4 - first filter plate; 5 - second filter plate; 6 - activated carbon adsorption plate; 7 - water tank; 8 - circulating water pump; 9 - refrigeration box; 10 - circulating water pipe; 11 - water adding pipe; 12 - sealing cover; 13 - pulling opening; 14 - feeding pipe; 15 - cover plate; 16 - igniter; 17 - fan; 18 - air inlet pipe; 19 - support plate; 20 - support frame; 21 - grate; 22 - ash collection drawer. Detailed Description of the Preferred Embodiments

[0024] Please refer to Figures 1-3 , a biomass combustion furnace with a flue gas purification function, including a furnace body 1. The top of the furnace body 1 is fixedly communicated with an air outlet pipe 2. Three slots 3 are spaced apart along the height direction on one outer wall of the air outlet pipe 2. A first filter plate 4, a second filter plate 5 and an activated carbon adsorption plate 6 are respectively arranged in the three slots 3. The first filter plate 4, the second filter plate 5 and the activated carbon adsorption plate 6 are distributed from bottom to top in sequence, and the filter holes of the second filter plate 5 are smaller than those of the first filter plate 4. A water tank 7 is sleeved outside the air outlet pipe 2, and the water tank 7 is placed on the top of the furnace body 1. One side of the water tank 7 is fixedly communicated with a circulating water pump 8, and the other end of the circulating water pump 8 is communicated with a refrigeration box 9. The refrigeration box 9 is connected with the water tank 7 through a circulating water pipe 10.

[0025] During use, the high-temperature flue gas generated by the combustion of biomass fuel in the furnace body 1 is discharged outward through the outlet pipe 2. When passing through the outlet pipe 2, it successively passes through the first filter plate 4, the second filter plate 5, and the activated carbon adsorption plate 6. The first filter plate 4 and the second filter plate 5 can filter out some dust and impurities in the flue gas, and the activated carbon adsorption plate 6 can adsorb some harmful gases.

[0026] Meanwhile, the cold water in the water tank 7 is transported to the refrigeration box 9 for cooling under the action of the circulating water pump 8. The cooled water then returns to the water tank 7 through the circulating water pipe 10. The cold water flows around the outlet pipe 2 in the water tank 7 to cool the passing high-temperature flue gas, reduce its temperature, and minimize the impact of high temperature on subsequent equipment and the environment. The flue gas after cooling and purification meets the national environmental protection emission standards.

[0027] With this design, firstly, by arranging the first filter plate 4, the second filter plate 5, and the activated carbon adsorption plate 6 to be distributed from bottom to top in sequence, it is possible to perform multi-stage filtration and treatment on the flue gas generated by combustion. Different filter plates can remove pollutants of different sizes and properties, and the activated carbon adsorption plate 6 can effectively adsorb odors and some harmful gases, thereby significantly improving the emission quality of the flue gas, reducing environmental pollution, and protecting human health.

[0028] Secondly, the water tank 7 is sleeved outside the outlet pipe 2, which can cool and lower the temperature of the passing high-temperature flue gas. This helps protect the subsequent pipelines and treatment equipment and extends their service life.

[0029] Thirdly, the water in the water tank 7 enters the refrigeration box 9 for cooling through the circulating water pump 8 and then returns to the water tank 7 through the circulating water pipe 10, forming a circulating cooling system. This design can make full use of water resources, reduce water consumption, and at the same time, the use of the refrigeration box 9 can improve the cooling efficiency, achieve the purpose of energy conservation, and reduce the energy cost during long-term operation.

[0030] Fourthly, the design of the slot 3 makes the installation and disassembly of the first filter plate 4, the second filter plate 5, and the activated carbon adsorption plate 6 very convenient. When the first filter plate 4, the second filter plate 5, and the activated carbon adsorption plate 6 reach the end of their service life or need cleaning and maintenance, they can be easily taken out for treatment or replacement to ensure the continuous and effective operation of the combustion furnace.

[0031] The refrigeration box 9 is a prior art and can be obtained by purchase, so it will not be elaborated in detail in this embodiment.

[0032] The refrigeration box 9 is fixedly arranged on the top of the furnace body 1.

[0033] The top of the refrigeration box 9 is fixedly connected and communicated with a water filling pipe 11, and the top of the water filling pipe 11 is threadedly connected with a sealing cover 12.

[0034] With this design, firstly, the water adding pipe 11 is provided to facilitate the addition of water into the refrigeration box 9. Secondly, the top of the water adding pipe 11 is threadedly connected to the sealing cover 12, which can be tightly sealed when no water is added, effectively preventing external dust, debris, etc. from entering the refrigeration box 9, ensuring the cleanliness of the internal water quality, thereby improving the refrigeration effect and the stability of the equipment.

[0035] In this embodiment, the first filter plate 4 is made of glass fiber cloth material, and the second filter plate 5 is made of synthetic fiber filter material.

[0036] The first filter plate 4 , the second filter plate 5 , and the activated carbon adsorption plate 6 are each provided with a draw opening 13 at the top near one end thereof.

[0037] With this design, the first filter plate 4, the second filter plate 5 and the activated carbon adsorption plate 6 can be easily pulled out or inserted into the slot 3 through the pull-out opening 13 without using other tools or complicated operations, so that these parts can be quickly replaced during daily maintenance and cleaning, thereby improving work efficiency.

[0038] The top of the furnace body 1 is fixedly connected with a feed pipe 14 , and the top of the feed pipe 14 is plugged with a cover plate 15 .

[0039] With this design, when no material is being fed, the cover plate 15 is plugged into the top of the feed pipe 14, which can not only effectively block foreign matter, dust, impurities, etc. from entering the furnace body 1, ensuring the cleanliness of the furnace environment, thereby contributing to the stability and efficiency of the combustion process; but also can reduce the heat loss in the furnace through the feed pipe 14 to a certain extent, helping to maintain the temperature in the furnace and improve energy efficiency.

[0040] A handle is fixedly mounted on the top of the cover plate 15 , and a handle cover is sleeved on the handle. The handle cover is made of a heat-insulating material.

[0041] With this design, firstly, a handle is fixedly installed on the top of the cover plate 15, which provides a convenient fulcrum for opening and closing the cover plate 15, making the operation easier and faster; secondly, a handle cover made of a heat-insulating material is sleeved on the handle to effectively isolate heat. When the interior of the furnace body 1 is in a high temperature state, the operator will not be burned when touching the handle, thereby improving the safety of the operation.

[0042] An igniter 16 is fixedly mounted on the outer wall of the furnace body 1 via a connecting piece, and an ignition end of the igniter 16 penetrates the furnace body 1 and extends into the interior thereof.

[0043] Such a design, by directly fixing the igniter 16 on the outer wall of the furnace body 1 and extending the ignition end through the furnace body 1 to the inside, can reduce the energy loss during the ignition process, shorten the ignition time, thereby achieving ignition quickly and effectively, and improving the overall work efficiency.

[0044] On one side of the furnace body 1, a blower 17 is provided, and the blower 17 is fixedly installed on the furnace body 1 through a support plate 19.

[0045] The air outlet end of the blower 17 is fixedly communicated with an air inlet pipe 18, and the other end of the air inlet pipe 18 penetrates the furnace body 1 and extends into the furnace body 1.

[0046] With such a design, the air outlet end of the blower 17 is fixedly communicated with the air inlet pipe 18, and the air inlet pipe 18 extends into the furnace body 1, which can directly transport external air into the furnace body 1. Thus, it not only helps to provide sufficient and stable oxygen for the combustion process, promotes the full combustion of fuel, and improves the combustion efficiency and energy utilization rate; and this directly connected design can more precisely control the air volume entering the furnace body 1; by adjusting the rotation speed or damper of the blower 17, the air intake volume can be flexibly adjusted according to different combustion requirements and working conditions to achieve the best combustion effect and temperature control.

[0047] On the inner wall of the lower part of the furnace body 1, a support frame 20 is fixedly provided, and a grate 21 is placed on the top of the support frame 20.

[0048] With such a design, the grate 21 can be directly placed on the top of the support frame 20, the installation process is simple and fast, and when the grate 21 needs to be replaced, it can also be easily taken out, saving operation time and labor costs.

[0049] A dust collection drawer 22 is slidably arranged on the furnace body 1 below the grate 21.

[0050] With such a design, the sliding design of the dust collection drawer 22 makes the cleaning of furnace ash simple and fast, without complex operations. Just pull out the drawer, and the collected furnace ash can be directly processed, so that the furnace ash generated by combustion can be collected in a timely and effective manner, preventing the accumulation of furnace ash in the furnace, thus keeping the furnace environment clean and helping to improve the combustion efficiency and air quality.

[0051] For those of ordinary skill in the art, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, the changes, modifications, substitutions, and variations made to the embodiments still fall within the protection scope of the present invention.

Claims

1. A biomass combustion furnace with flue gas purification function, comprising a furnace body (1), and an air outlet pipe (2) is fixedly communicated with the top of the furnace body (1), and is characterized in that: On one side outer wall of the air outlet pipe (2), three slots (3) are spaced apart along its height direction. A first filter plate (4), a second filter plate (5) and an activated carbon adsorption plate (6) are respectively arranged in the three slots (3). The first filter plate (4), the second filter plate (5) and the activated carbon adsorption plate (6) are distributed from bottom to top in sequence, and the filter holes of the second filter plate (5) are smaller than those of the first filter plate (4). A water tank (7) is sleeved outside the air outlet pipe (2), and the water tank (7) is placed on the top of the furnace body (1). One side of the water tank (7) is fixedly communicated with a circulating water pump (8), and the other end of the circulating water pump (8) is communicated with a refrigeration box (9). The refrigeration box (9) and the water tank (7) are connected and communicated through a circulating water pipe (10).

2. The biomass combustion furnace with a flue gas purification function according to claim 1, characterized in that: A water adding pipe (11) is fixedly communicated with the top of the refrigeration box (9), and a sealing cover (12) is threadedly connected to the top of the water adding pipe (11).

3. The biomass combustion furnace with a flue gas purification function according to claim 2, characterized in that: The first filter plate (4), the second filter plate (5) and the activated carbon adsorption plate (6) are respectively provided with pulling openings (13) through the top near one end thereof.

4. A biomass combustion furnace with a flue gas purification function according to claim 3, characterized in that: A feed pipe (14) is fixedly communicated with the top of the furnace body (1), a cover plate (15) is inserted into the top of the feed pipe (14), a handle is fixedly installed on the top of the cover plate (15), and a handle sleeve is sleeved on the handle. The handle sleeve is made of heat-insulating material.

5. A biomass combustion furnace with a flue gas purification function according to claim 4, characterized in that: An igniter (16) is fixedly installed on the outer wall of the furnace body (1) through a connecting piece, and the ignition end of the igniter (16) penetrates through the furnace body (1) and extends into its interior.

6. A biomass combustion furnace with a flue gas purification function according to claim 5, characterized in that: A blower (17) is arranged on one side of the furnace body (1), and the blower (17) is fixedly installed on the furnace body (1) through a support plate (19).

7. The biomass combustion furnace with a flue gas purification function according to claim 6, characterized in that: The air outlet end of the blower (17) is fixedly communicated with an air inlet pipe (18), and the other end of the air inlet pipe (18) penetrates through the furnace body (1) and extends into the interior of the furnace body (1).

8. A biomass combustion furnace with a flue gas purification function according to claim 7, characterized in that: A support frame (20) is fixedly arranged on the lower inner wall of the furnace body (1), and a grate (21) is placed on the top of the support frame (20).

9. The biomass combustion furnace with a flue gas purification function according to claim 8, characterized in that: An ash collection drawer (22) is slidably arranged below the grate (21) on the furnace body (1).

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