Fluidized bed double-gas combustion furnace for incinerating straw garbage

Abstract

The fluidized bed double-gas combustion furnace comprises a furnace body, a plurality of supporting legs are fixedly connected to the outer wall of the furnace body, a partition net is arranged in the furnace body, a feeding port is formed in the right side of the furnace body, igniters are installed on the inner walls of the left side and the right side of the furnace body, and the left side and the right side of the furnace body are both provided with a gas inlet. L-shaped plates are fixedly connected to the left side and the right side of the furnace body correspondingly, rotating joints are installed on the opposite sides of the two L-shaped plates correspondingly, gas injection pipes communicate with the adjacent sides of the two rotating joints correspondingly, the two gas injection pipes extend into the furnace body correspondingly, and gas pipes communicate with the opposite sides of the two rotating joints correspondingly. According to the combustion furnace, when straw is incinerated, pipe openings of the two gas injection pipes can rotate downwards, the situation that the pipe openings of the gas injection pipes are blocked by ash generated in the combustion process is avoided, meanwhile, the situation that the straw is stacked together can be avoided in the adding process, and after incineration is completed, the generated ash can be cleared away more easily.

Description

Technical Field

[0001] The utility model relates to the technical field of straw waste treatment, in particular to a fluidized bed dual-gas combustion furnace for burning straw waste. Background Technique

[0002] Biomass resources in our country are very rich, among which cotton stalks, corn stalks, tree branches, etc. account for a large proportion. How to efficiently utilize these agricultural wastes to achieve their harmlessness, reduction and resource utilization has become an important topic at home and abroad. Applying the circulating fluidized bed combustion technology to the large-scale treatment of cotton stalks, corn stalks and tree branches to solve the disadvantages of low efficiency and high pollution of traditional treatment methods, and at the same time using it for power generation or heating to replace part of the fossil fuels will play a very important role in China's energy and environmental protection strategies.

[0003] When the existing fluidized bed combustion furnace is in use, in order to ensure the combustion of straw in the combustion furnace, a partition net is usually arranged in the furnace body. The straw is located above the partition net, and the gas pipe is located below the partition net. Thus, during combustion, air can enter from the bottom. However, during the actual combustion process, ashes will be generated, and these ashes will fall through the partition net, which easily causes the partition net to be blocked. Moreover, before burning the straw, since the straw is poured through the feeding port, the straw will all pile up together, resulting in a relatively long burning time for the straw. Therefore, it is necessary to design a fluidized bed dual-gas combustion furnace for burning straw waste to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art, and to propose a fluidized bed dual-gas combustion furnace for burning straw waste. When burning the straw, the nozzles of the two injection pipes can rotate downward, avoiding the situation that the nozzles of the injection pipes are blocked by the ashes during combustion. At the same time, during the addition process, the situation of straw piling up together can be avoided, and after burning, it is easier to clean the generated ashes.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A fluidized bed dual-gas combustion furnace for burning straw waste, comprising a furnace body, a plurality of supporting feet fixedly connected to the outer wall of the furnace body, a partition net provided inside the furnace body, a feed inlet provided on the right side of the furnace body, igniters installed on the inner walls of the left and right sides of the furnace body, L-shaped plates fixedly connected to the left and right sides of the furnace body respectively, rotary joints installed on the opposite sides of the two L-shaped plates respectively, injection pipes communicated with the adjacent sides of the two rotary joints respectively, the two injection pipes both extending into the furnace body, gas pipes communicated with the opposite sides of the two rotary joints respectively, control boxes fixedly connected to the adjacent sides of the two L-shaped plates respectively, the two injection pipes both penetrating through the corresponding control boxes, electric telescopic rods fixedly connected to the inner tops of the two control boxes respectively, moving plates fixedly connected to the telescopic ends of the two electric telescopic rods respectively, racks fixedly connected to the lower ends of the two moving plates respectively, and gears provided on the two injection pipes.

[0007] Preferably, a driving motor is installed at the upper end of the furnace body, the end of the output shaft of the driving motor extends into the furnace body and is fixedly connected with a rotating rod, and a plurality of disturbing rods are fixedly connected to the outer wall of the rotating rod.

[0008] Preferably, two pneumatic rods are fixedly connected to the lower end of the furnace body, a circular plate is fixedly connected to the telescopic ends of the two pneumatic rods together, and a collection box is placed on the upper end of the circular plate.

[0009] Preferably, a plurality of positioning blocks are fixedly connected to the upper end of the circular plate.

[0010] Preferably, a plurality of gas injection pipes are installed on the front and rear side walls of the furnace body, and an exhaust gas discharge pipe is communicated with the top space of the furnace body.

[0011] Preferably, the outer diameter of the collection box is the same as the inner diameter of the furnace body, and the outer wall of the collection box is slidably connected with the inner wall of the furnace body.

[0012] Compared with the existing technology, the advantages of this device are as follows:

[0013] 1. Compared with the existing technology, through the setting of the electric telescopic rods, after the straw is ignited, the staff controls the two electric telescopic rods to contract, so that the two racks move upward, driving the two injection pipes to rotate 180 degrees, making the nozzles of the injection pipes face downward, avoiding the situation that the subsequent ash enters the injection pipes and causes the nozzles to be blocked.

[0014] 2. Compared with the existing technology, through the setting of a plurality of disturbing rods, when adding straw, the straw can be made to be laid flat above the partition net as much as possible, so that the straw can be burned quickly, improving the burning efficiency of the straw.

[0015] 3. Compared with the prior art, through the setting of the pneumatic rod and the collection box, it is convenient for the staff to handle the ashes generated by incineration after each incineration. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of a fluidized bed dual-gas combustion furnace for burning straw waste proposed by the present utility model;

[0017] Figure 2 is Figure 1 the enlarged structural diagram at A in

[0018] Figure 3 is Figure 1 the structural diagram from another perspective;

[0019] Figure 4 is Figure 1 the half-sectional view of

[0020] In the figure: 1 furnace body, 2 drive motor, 3 exhaust gas discharge pipe, 4 feed inlet, 5 gas supply pipe, 6 support feet, 7 circular plate, 8 collection box, 9 positioning block, 10 pneumatic rod, 11 L-shaped plate, 12 gas pipe, 13 rotary joint, 14 control box, 15 electric telescopic rod, 16 moving plate, 17 gear, 18 injection pipe, 19 rack, 20 rotating rod, 21 disturbing rod, 22 igniter. Detailed Embodiment

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0022] Refer to Figures 1-4, a fluidized bed dual-gas combustion furnace for burning straw waste, includes a furnace body 1. Multiple support feet 6 are fixedly connected to the outer wall of the furnace body 1. A partition net is provided inside the furnace body 1. A feed inlet 4 is provided on the right side of the furnace body 1. Igniters 22 are installed on the inner walls of the left and right sides of the furnace body 1. L-shaped plates 11 are fixedly connected to both the left and right sides of the furnace body 1. Rotary joints 13 are installed on the opposite sides of the two L-shaped plates 11. Injecting pipes 18 are communicated with the adjacent sides of the two rotary joints 13. The two injecting pipes 18 are both L-shaped, with the initial pipe orifice facing upward. The two injecting pipes 18 both extend into the furnace body 1. Gas pipes 12 are communicated with the opposite sides of the two rotary joints 13. Valves are provided on both of the two gas pipes 12. Natural gas is injected into one of the gas pipes 12, and diesel is injected into the other gas pipe 12. Control boxes 14 are fixedly connected to the adjacent sides of the two L-shaped plates 11. The two injecting pipes 18 both penetrate through the corresponding control boxes 14. Electric telescopic rods 15 are fixedly connected to the inner tops of the two control boxes 14. Moving plates 16 are fixedly connected to the telescopic ends of the two electric telescopic rods 15. Rack bars 19 are fixedly connected to the lower ends of the two moving plates 16. Gear wheels 17 are provided on both of the two injecting pipes 18.

[0023] Among them, a driving motor 2 is installed at the upper end of the furnace body 1. The end of the output shaft of the driving motor 2 extends into the furnace body 1 and is fixedly connected to a rotating rod 20. A plurality of disturbing rods 21 are fixedly connected to the outer wall of the rotating rod 20.

[0024] Among them, two pneumatic rods 10 are fixedly connected to the lower end of the furnace body 1. A circular plate 7 is fixedly connected to the telescopic ends of the two pneumatic rods 10. A collection box 8 is placed on the upper end of the circular plate 7. A plurality of positioning blocks 9 are fixedly connected to the upper end of the circular plate 7, so that the collection box 8 can be located in the middle position of the circular plate 7 after being placed. The outer diameter of the collection box 8 is the same as the inner diameter of the furnace body 1. The outer wall of the collection box 8 is slidably connected to the inner wall of the furnace body 1.

[0025] Among them, a plurality of gas adding pipes 5 are installed on the front and rear side walls of the furnace body 1. An exhaust gas discharge pipe 3 is communicated with the top space of the furnace body 1.

[0026] The functional principle of the present utility model can be described through the following operation method: When burning straw, the straw is added into the incinerator through the feed inlet 4, and then the valves on the two gas pipes 12 are opened, so that the gas is supplied into the furnace body 1. The gas is ignited by the igniters 22, and then the straw is ignited for burning. When the straw is burning, the fan will inject air into the furnace body 1 through a plurality of gas adding pipes 5 to ensure sufficient oxygen during the straw burning. The exhaust gas discharge pipe 3 is connected to a heat exchanger in the prior art for heat collection;

[0027] When adding straw, start the driving motor 2, and the rotating rod 20 drives the plurality of disturbing rods 21 to rotate, so that the straw can be laid flat above the partition net as much as possible;

[0028] After igniting the straw, close the valves on the two gas pipes 12, control the two electric telescopic rods 15 to stretch, so that the two moving plates 16 drive the racks 19 to move upward, thereby driving the two injection pipes 18 to rotate, and further making the nozzles of the two injection pipes 18 rotate downward;

[0029] After the straw is burned out, control the two pneumatic rods 10 to stretch, so that the circular plate 7 drives the collection box 8 to move downward. At this time, the staff can take out the collection box 8 for centralized cleaning.

[0030] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, making equivalent replacements or changes, should be covered within the protection scope of the present invention.

Claims

1. A fluidized bed dual-gas combustion furnace for burning straw waste, comprising a furnace body (1), characterized in that: The outer wall of the furnace body (1) is fixedly connected with a plurality of supporting feet (6). A partition net is arranged inside the furnace body (1). A feed inlet (4) is arranged on the right side of the furnace body (1). Igniters (22) are installed on the inner walls of the left and right sides of the furnace body (1). L-shaped plates (11) are fixedly connected to both the left and right sides of the furnace body (1). Rotary joints (13) are installed on the opposite sides of the two L-shaped plates (11). Injecting gas pipes (18) are communicated with the adjacent sides of the two rotary joints (13). The two injecting gas pipes (18) both extend into the furnace body (1). Gas supply pipes (12) are communicated with the opposite sides of the two rotary joints (13). Control boxes (14) are fixedly connected to the adjacent sides of the two L-shaped plates (11). The two injecting gas pipes (18) both penetrate through the corresponding control boxes (14). Electric telescopic rods (15) are fixedly connected to the inner tops of the two control boxes (14). The telescopic ends of the two electric telescopic rods (15) are fixedly connected with moving plates (16). Rack bars (19) are fixedly connected to the lower ends of the two moving plates (16). Gears (17) are arranged on the two injecting gas pipes (18).

2. The dual-gas combustion furnace for fluidized bed of straw and garbage incineration according to claim 1, wherein: A driving motor (2) is installed at the upper end of the furnace body (1). The end of the output shaft of the driving motor (2) extends into the furnace body (1) and is fixedly connected with a rotating rod (20). A plurality of disturbing rods (21) are fixedly connected to the outer wall of the rotating rod (20).

3. A fluidized bed dual-gas combustion furnace for burning straw waste according to claim 1, characterized in that: Two pneumatic rods (10) are fixedly connected to the lower end of the furnace body (1). The telescopic ends of the two pneumatic rods (10) are jointly fixedly connected with a circular plate (7). A collection box (8) is placed on the upper end of the circular plate (7).

4. The dual-gas combustion furnace for fluidized bed of straw waste incineration according to claim 3, wherein: A plurality of positioning blocks (9) are fixedly connected to the upper end of the circular plate (7).

5. A fluidized bed dual-gas combustion furnace for burning straw waste according to claim 1, characterized in that: A plurality of gas adding pipes (5) are installed on the front and rear side walls of the furnace body (1). An exhaust gas discharge pipe (3) is communicated with the top space of the furnace body (1).

6. The dual-gas combustion furnace of fluidized bed for burning straw waste according to claim 3, characterized in that: The outer diameter of the collection box (8) is the same as the inner diameter of the furnace body (1). The outer wall of the collection box (8) is slidably connected with the inner wall of the furnace body (1).

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