High-temperature pyrolysis gasification furnace

Abstract

The utility model discloses a high-temperature pyrolysis gasification furnace which comprises a furnace body provided with a first combustion chamber and a second combustion chamber, a cylinder body arranged at the upper end of the first combustion chamber, a smoke hood arranged at the upper end of the cylinder body, and a fire grate device arranged at the first combustion chamber, a feeding hole is formed in the smoke hood; a flue gas inlet communicated with the secondary combustion chamber is formed in the lower part of the barrel, and a flue gas outlet is formed in the upper part; the fire grate device comprises a support, a plurality of fixed fire grate plates arranged in a step shape, movable fire grate plates arranged between the fixed fire grate plates at intervals, a movable frame located below the movable fire grate plates and capable of moving relative to the support, and a driving cylinder driving the movable frame to move. The movable grate plate is fixedly connected with the movable frame; the fixed fire grate plate and the movable fire grate plate form a continuous step shape; and the fixed grate plate is fixedly connected with the bracket. The device has the advantages that coking layers formed on the surfaces of the fixed fire grate plate and the movable fire grate plate can be removed in time, and the continuity and the stability of the pyrolysis process are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to waste treatment equipment technical field, especially relates to a high temperature pyrolysis gasification furnace. BACKGROUND

[0002] The high temperature pyrolysis gasification furnace heats waste to high temperature under oxygen-free or low-oxygen environment, so that organic matter is decomposed into combustible gas and solid residue. This process effectively reduces the volume of waste and recycles energy and materials, which is of great significance to resource recycling and environmental protection. The generated gas is subjected to high-temperature oxygen-rich combustion in the secondary combustion chamber. This process reduces the generation of harmful substances such as dioxins due to low-oxygen conditions, and the temperature of about 1100℃ in the secondary combustion chamber and the smoke residence time of more than 2 seconds further decompose these harmful substances, ensuring that the emissions meet national standards.

[0003] In the process of cracking gasification of the existing high temperature pyrolysis gasification furnace, as the reaction proceeds, part of the material will coking phenomenon, these coking substances are easy to adhere to the grate of the gasification chamber. This coking not only hinders the smooth discharge of solid residue, but also may cause uneven temperature distribution in the furnace, affecting the overall pyrolysis gasification efficiency. In addition, with the passage of time, the accumulated coking layer will gradually thicken, further reducing the processing capacity of the system, and may increase the maintenance cost. Therefore, it is particularly important to take effective improvement measures for this problem. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a high temperature pyrolysis gasification furnace.

[0005] In order to solve the above technical problem, the technical scheme of the utility model is as follows:

[0006] A high temperature pyrolysis gasification furnace, comprising a furnace body with a combustion chamber and a secondary combustion chamber, a cylinder body arranged at the upper end of the combustion chamber, a smoke hood arranged at the upper end of the cylinder body, and a grate device arranged at the combustion chamber; the smoke hood is provided with a feed inlet; the lower part of the cylinder body is provided with a flue gas inlet communicated with the secondary combustion chamber, and the upper part is provided with a flue gas outlet; the grate device comprises a support, a plurality of fixed grate plates arranged in a stepped manner, movable grate plates arranged at intervals between the fixed grate plates, a movable frame arranged below the movable grate plates and movable relative to the support, and a drive cylinder for driving the movable frame to move; the movable grate plate is fixedly connected with the movable frame; the fixed grate plate and the movable grate plate form a continuous stepped structure; and the fixed grate plate is fixedly connected with the support.

[0007] Preferably, the bracket is fixedly connected with a first fixed shaft corresponding to the fixed grate plate, and the left end of the fixed grate plate is fixedly connected with the first fixed shaft; the movable bracket is fixedly connected with a second fixed shaft corresponding to the movable grate plate, and the left end of the movable grate plate is fixedly connected with the second fixed shaft; the movable grate plate located at the uppermost position is provided with a counterweight; and the bracket is provided with a supporting block for supporting the right end of the lowermost fixed grate plate.

[0008] Preferably, the furnace body is provided with a mounting frame, the driving cylinder comprises a cylinder body fixedly connected with the mounting frame, and a piston rod connected with the movable bracket.

[0009] Preferably, the movable bracket comprises a bottom frame and a plurality of vertical frames fixedly connected with the bottom frame; and the movable grate plate is connected with the corresponding vertical frame.

[0010] Preferably, the bracket is fixedly connected with a guide plate, and the movable bracket is fixedly connected with a guide seat in contact with the guide plate.

[0011] Preferably, the lower portion of the cylinder body is provided with an annular gas distribution cavity in communication with the flue gas inlet, and the upper end of the annular gas distribution cavity is provided with a plurality of gas distribution holes; and the upper portion of the cylinder body is provided with an annular gas inlet cavity in communication with the flue gas outlet, and the lower end of the annular gas inlet cavity is provided with a plurality of gas inlet holes.

[0012] The above technical scheme has the following advantages:

[0013] The utility model discloses can effectively push the coking material adhered to the fixed grate plate and movable grate plate into the ash discharge cavity. Through this mechanical pushing action, the coking layer formed on the surface of the fixed grate plate and movable grate plate can be timely removed, avoiding the accumulation of these difficult-to-handle substances on the fixed grate plate and movable grate plate. In this way, not only the space in the furnace is kept unobstructed, but also the efficiency of pyrolysis gasification is significantly improved, ensuring the continuity and stability of the pyrolysis process. In addition, due to the reduction of local overheating or temperature unevenness caused by coking, the long-term operation stability of the entire system is also enhanced. Therefore, the utility model has important significance for improving the overall performance of the high-temperature pyrolysis gasification furnace, and also simplifies the equipment maintenance work and prolongs the service life. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a front view of the utility model;

[0015] Figure 2 It is a left view of Figure 1 ; It is a top view of ; It is a front view of

[0016] ; It is a left view of Figure 3 ; It is a top view of Figure 1 ; It is a front view of ; It is a left view of

[0017] ; It is a top view of Figure 4The utility model discloses a sectional view of the furnace body, and the sectional view is drawn in part.

[0018] Figure 5 For Figure 4 The enlarged view of A part in the middle;

[0019] Figure 6 For Figure 4 The enlarged view of B part in the middle;

[0020] Figure 7 For the front view of the furnace grate device;

[0021] Figure 8 For Figure 7 The left view of the furnace body;

[0022] Figure 9 For Figure 7 The top view of the furnace body;

[0023] Figure 10 For the sectional view of the furnace grate device;

[0024] In the figure:

[0025] 1 - one combustion chamber, 2 - two combustion chambers, 3 - furnace body, 4 - cylinder, 5 - smoke cover, 6 - feed inlet, 7 - flue gas inlet, 8 - flue gas outlet, 9 - support, 10 - fixed grate plate, 11 - movable grate plate, 12 - movable frame, 13 - drive cylinder, 14 - fixed shaft one, 15 - fixed shaft two, 16 - counterweight, 17 - support block, 18 - mounting frame, 19 - cylinder body, 20 - piston rod, 21 - bottom frame, 22 - vertical frame, 23 - guide plate, 24 - guide seat, 25 - annular air distribution cavity, 26 - air distribution hole, 27 - annular air inlet cavity, 28 - air inlet hole. DETAILED DESCRIPTION

[0026] The specific embodiments of the utility model will be further described below in combination with the drawings. It needs to be explained here that the description of these embodiments is used to help understanding the utility model, but does not constitute the limitation to the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined mutually as long as they do not conflict with each other.

[0027] As shown in the drawings, a high-temperature pyrolysis gasification furnace comprises a furnace body 3 with a combustion chamber 1 and a secondary combustion chamber 2, a cylinder 4 arranged at the upper end of the combustion chamber 1, a smoke hood 5 arranged at the upper end of the cylinder 4, and a grate device arranged at the combustion chamber 1; the smoke hood 5 is provided with a feeding port 6; the lower part of the cylinder 4 is provided with a flue gas inlet 7 communicated with the secondary combustion chamber 2, and the upper part is provided with a flue gas outlet 8; the grate device comprises a support 9, a plurality of fixed grate plates 10 arranged in a stepped manner, movable grate plates 11 arranged at intervals between the fixed grate plates 10, a movable frame 12 below the movable grate plates 11 and movable relative to the support 9, and a drive cylinder 13 driving the movable frame 12 to move; the movable grate plates 11 are fixedly connected with the movable frame 12; the fixed grate plates 10 and the movable grate plates 11 form a continuous stepped structure; and the fixed grate plates 10 are fixedly connected with the support 9.

[0028] As a specific technical solution of the embodiment, a fixed shaft one 14 corresponding to the fixed grate plate 10 is fixedly connected to the left end of the fixed grate plate 10; a fixed shaft two 15 corresponding to the movable grate plate 11 is fixedly connected to the left end of the movable grate plate 11; a counterweight 16 is arranged on the uppermost movable grate plate 11; and a supporting block 17 is arranged on the support 9 for supporting the right end of the lowermost fixed grate plate 10.

[0029] As a further improved technical solution of the embodiment, a mounting frame 18 is arranged on the furnace body 3; the drive cylinder 13 comprises a cylinder body 19 fixedly connected with the mounting frame 18, and a piston rod 20 connected with the movable frame 12. In operation, the drive cylinder 13 drives the movable frame 12 to move back and forth, and drives the movable grate plates 11 to move back and forth relative to the fixed grate plates 10, so that the surface adhesion of coking between the fixed grate plates 10 and the movable grate plates 11 is cleaned, and finally the coking is pushed into the ash discharge cavity (not shown in the figure) of the combustion chamber 1.

[0030] As a further improved technical solution of the embodiment, the movable frame 12 comprises a bottom frame 21 and a plurality of vertical frames 22 fixedly connected to the bottom frame 21 at intervals; and the movable grate plates 11 are connected with the corresponding vertical frames 22. This structure has the advantage of high supporting strength, and obviously other structure forms of movable frame can also be adopted.

[0031] As a further improved technical solution of the embodiment, a guide plate 23 is fixedly connected to the support 9, and a guide seat 24 in contact with the guide plate 23 is fixedly connected to the movable frame 12. By arranging the guide structure, the stability of the back-and-forth movement of the movable frame 12 can be further improved.

[0032] As a further improved technical scheme of the embodiment, the lower part of the cylinder 4 is provided with an annular air distribution cavity 25 communicated with the flue gas inlet 7, and the upper end of the annular air distribution cavity 25 is provided with a plurality of air distribution holes 26; the upper part of the cylinder 4 is provided with an annular air inlet cavity 27 communicated with the flue gas outlet 8, and the lower end of the annular air inlet cavity 27 is provided with a plurality of air inlet holes 28. In actual use, the flue gas discharged from the second combustion chamber 2 forms an annular hot gas flow along the inner wall of the cylinder 4, and is finally discharged through the flue gas outlet 28. The annular hot gas flow can heat and insulate the inside of the cylinder 4, so as to improve the temperature in the cylinder 4 and improve the drying efficiency of the garbage, and ensure that the garbage in the first combustion chamber 1 can be decomposed more quickly.

[0033] The utility model discloses can effectively push the coking material adhered to fixed grate plate 10 and movable grate plate 11 into the ash removal cavity. Through this mechanical pushing action, the coking layer formed on the surface of fixed grate plate 10 and movable grate plate 11 can be removed in time, avoiding the accumulation of these difficult-to-handle substances on fixed grate plate 10 and movable grate plate 11. In this way, not only the space in the furnace is kept unobstructed, but also the efficiency of pyrolysis gasification is significantly improved, ensuring the continuity and stability of the pyrolysis process.

[0034] The embodiments of the utility model are described in detail in combination with the drawings, but the utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and still fall within the protection scope of the utility model.

Claims

1. A high-temperature pyrolysis gasification furnace, comprising a furnace body (3) with a combustion chamber (1) and a secondary combustion chamber (2), a cylinder (4) arranged at the upper end of the combustion chamber (1), a smoke hood (5) arranged at the upper end of the cylinder (4), and a grate device arranged at the combustion chamber (1); the smoke hood (5) is provided with a feeding port (6); the lower part of the cylinder (4) is provided with a flue gas inlet (7) communicating with the secondary combustion chamber (2), and the upper part is provided with a flue gas outlet (8); characterized in that: The grate device comprises a support (9), a plurality of fixed grate plates (10) arranged in a stepped manner, movable grate plates (11) arranged at intervals between the fixed grate plates (10), movable frames (12) located below the movable grate plates (11) and movable relative to the support (9), and drive cylinders (13) for driving the movable frames (12) to move; the movable grate plates (11) are fixedly connected with the movable frames (12); the fixed grate plates (10) and the movable grate plates (11) form a continuous stepped structure; and the fixed grate plates (10) are fixedly connected with the support (9).

2. The high temperature pyrolysis gasifier according to claim 1, characterized in that: A first fixed shaft (14) corresponding to the fixed grate plates (10) is fixedly connected to the support (9) and the left end of each fixed grate plate (10) is fixedly connected with the first fixed shaft (14); a second fixed shaft (15) corresponding to the movable grate plates (11) is fixedly connected to the movable frames (12) and the left end of each movable grate plate (11) is fixedly connected with the second fixed shaft (15); the uppermost movable grate plate (11) is provided with a counterweight (16); and the support (9) is provided with a support block (17) for supporting the right end of the lowermost fixed grate plate (10).

3. The high temperature pyrolysis gasifier according to claim 1 or 2, characterized in that: The furnace body (3) is provided with a mounting frame (18), the drive cylinder (13) comprises a cylinder body (19) fixedly connected with the mounting frame (18) and a piston rod (20) connected with the movable frame (12).

4. The high temperature pyrolysis gasification furnace according to claim 1 or 2, characterized in that: The movable frame (12) comprises a bottom frame (21) and a plurality of vertical frames (22) fixedly connected to the bottom frame (21) at intervals; and the movable grate plates (11) are connected with the corresponding vertical frames (22).

5. The high temperature pyrolysis gasification furnace according to claim 1 or 2, characterized in that: The support (9) is fixedly connected with a guide plate (23), and the movable frame (12) is fixedly connected with a guide seat (24) in contact with the guide plate (23).

6. The high temperature pyrolysis gasification furnace according to claim 1 or 2, characterized by: The lower part of the cylinder body (4) is provided with an annular gas distribution cavity (25) in communication with the flue gas inlet (7), and the upper end of the annular gas distribution cavity (25) is provided with a plurality of gas distribution holes (26); and the upper part of the cylinder body (4) is provided with an annular gas inlet cavity (27) in communication with the flue gas outlet (8), and the lower end of the annular gas inlet cavity (27) is provided with a plurality of gas inlet holes (28).

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