Pyrolysis gasification furnace

Abstract

The utility model discloses a pyrolysis gasification furnace, which relates to the technical field of pyrolysis gasification furnaces, and comprises a furnace body, the outer side of the bottom end of the furnace body is sleeved with an ash groove, the inner side of the bottom end of the furnace body is provided with a fire grate, the fire grate is fixedly connected with the ash groove, and the ash groove is driven by a motor to rotate; a slag discharging gap is formed between the bottom end of the furnace body and the inner wall of the ash slag groove, and a scraping plate is fixedly connected to the outer side of the furnace body and obliquely arranged along the groove wall of the ash slag groove. According to the pyrolysis gasification furnace, the slag discharging structure is simplified, ash slag can be crushed and discharged through one motor, the structure is simpler, and the arrangement cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of pyrolysis gasification furnace technology, specifically to a pyrolysis gasification furnace. Background Technology

[0002] A rotatable grate and slag removal mechanism are usually installed under the pyrolysis furnace. The main purpose of these mechanisms is to ensure that the ash and slag generated during the pyrolysis process can be discharged smoothly.

[0003] Chinese Utility Model Patent Application No. CN202322560367.6 discloses a small-scale municipal solid waste incinerator, comprising a pyrolysis gasification furnace body, a temporary storage silo, an ash and slag water seal trough, a ash discharge conveying mechanism, and a secondary combustion chamber. A furnace cover is rotatably connected to the top of the pyrolysis gasification furnace body, and a rotating grate mechanism is located at the bottom of the furnace body. This small-scale municipal solid waste incinerator has a relatively complex ash discharge structure, and its ash discharge conveying mechanism and rotating grate mechanism require independent motors for driving, resulting in high equipment deployment costs.

[0004] Therefore, it is necessary to propose a pyrolysis gasification furnace to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The purpose of this utility model is to provide a pyrolysis gasification furnace to solve the problems mentioned in the background art, such as the complex slag discharge structure and high installation cost of existing pyrolysis gasification furnaces.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution: a pyrolysis gasification furnace, including a furnace body, an ash trough sleeved on the outer side of the bottom end of the furnace body, a grate provided on the inner side of the bottom end of the furnace body, the grate being fixedly connected to the ash trough, and the ash trough being driven to rotate by a motor;

[0009] A slag discharge gap is provided between the bottom end of the furnace body and the inner wall of the ash trough. A scraper is fixedly connected to the outside of the furnace body, and the scraper is inclinedly arranged along the wall of the ash trough.

[0010] Preferably, the grate is tower-shaped, and the axis of the grate is collinear with the axis of the ash trough.

[0011] Preferably, the grate has an eccentric structure.

[0012] Preferably, a guide plate is provided on the outer side of the ash trough at a position corresponding to the scraper.

[0013] Preferably, the ash trough is rotatably connected to the base via a slewing bearing, a gear ring is fixedly connected to the outer side of the ash trough, and a gear adapted to the gear ring is fixedly connected to the output shaft of the motor.

[0014] Preferably, a water jacket is provided on the outer side of the furnace body.

[0015] Preferably, the top of the furnace body is connected to a feed pipe, and two slide valves are spaced apart on the feed pipe.

[0016] Preferably, it also includes a secondary combustion chamber, the furnace body is connected to the secondary combustion chamber through a flue, and the secondary combustion chamber is connected to an air distribution pipe.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, the present invention provides a pyrolysis gasification furnace, which has the following beneficial effects:

[0019] This pyrolysis gasifier features a synchronously rotating grate and ash trough, with scrapers fixed to the furnace body on the inner side of the ash trough. This allows for the crushing and discharge of ash slag using a single motor, resulting in a simpler structure and reduced installation costs. Attached Figure Description

[0020] Figure 1 This is a cross-sectional schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a cross-sectional schematic diagram of a grate according to the present invention;

[0022] Figure 3 This is a cross-sectional schematic diagram of another type of grate according to the present invention;

[0023] Figure 4 This is a top view schematic diagram of the ash trough of this utility model.

[0024] In the diagram: 1. Feed pipe; 2. Slide valve; 3. Water jacket; 4. Furnace body; 5. Scraper; 6. Guide plate; 7. Slag discharge trolley; 8. Grate; 9. Motor; 10. Ash trough; 11. Support; 12. Flue; 13. Secondary combustion chamber; 14. Air distribution pipe; 15. Base. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Please see Figure 1-4As shown, a pyrolysis gasification furnace includes a furnace body 4. An ash trough 10 is sleeved on the outer side of the bottom end of the furnace body 4, and a grate 8 is provided on the inner side of the bottom end of the furnace body 4. The grate 8 is fixedly connected to the ash trough 10. The ash trough 10 is rotatably connected to the base 15 and driven to rotate by a motor 9. The furnace body 4 is supported above the ash trough 10 by a bracket 11, and a slag discharge gap is formed between the bottom end of the furnace body 4 and the inner wall of the ash trough 10. A scraper 5 is fixedly connected to the outer side of the furnace body 4, and the scraper 5 is inclinedly arranged along the wall of the ash trough 10.

[0027] During operation, water is injected into the ash trough 10 to seal the lower end of the furnace body 4, and the material is fed into the furnace body 4 for pyrolysis and gasification. When discharging ash, the grate 8 and the ash trough 10 are driven to rotate synchronously by the motor 9. The rotation of the grate 8 breaks large pieces of ash into smaller particles, allowing them to pass through the grate 8 and fall into the ash trough 10. At the same time, the water in the ash trough 10 can cool the ash. Simultaneously, as the ash trough 10 rotates, the scraper 5 scrapes up the ash in the ash trough 10. As the ash accumulates, it is gradually discharged.

[0028] The ash trough 10 is circular and its sidewalls are sloped to facilitate the discharge of ash. At the same time, the top of the scraper 5 is inclined in the direction of rotation of the ash trough 10, so that the arrangement direction of the scraper 5 forms an angle with the radial line of the ash trough 10, so that the scraper 5 acts on the ash and discharges it.

[0029] In some embodiments, for fine materials, a tower-shaped grate 8 is used, with its axis collinear with the axis of the ash trough 10, and a small gap is provided to reduce the particle size of the material that can pass through, so that it can process materials with smaller particles.

[0030] In some embodiments, for fine materials, an eccentric grate 8 is used with an enlarged gap. By using an eccentric grate 8, it has a stronger crushing capacity during rotation, so as to crush large pieces of ash and slag.

[0031] To facilitate the collection and transportation of materials, a guide plate 6 is used to guide the ash and slag flow. Specifically, the guide plate 6 is fixedly connected to the support 11, and is located on the outside of the ash and slag trough 10, corresponding to the position of the scraper 5. In use, the ash and slag can be collected and transported by the slag discharge trolley 7.

[0032] In some embodiments, the motor 9 is fixedly connected to the base 15, a gear is fixedly connected to the output shaft of the motor 9, the ash trough 10 is rotatably connected to the base 15 through a slewing bearing, and a gear ring is fixedly connected to the outer side of the ash trough 10, with the gear and the gear ring meshing with each other.

[0033] Specifically, a water jacket 3 is provided on the outside of the furnace body 4. By setting the water jacket 3, the furnace body 4 can be ensured to operate stably at high temperatures, reducing safety hazards caused by excessive temperature.

[0034] Specifically, the top of the furnace body 4 is connected to a feed pipe 1, and two slide gate valves 2 are spaced apart on the feed pipe 1. When feeding, the upper slide gate valve 2 is opened first to let the material fall, then the upper slide gate valve 2 is closed and the lower slide gate valve 2 is opened to let the material fall into the furnace body 4. The double slide gate valve 2 design is used to control the amount of material added.

[0035] In some embodiments, a secondary combustion chamber 13 is also included. The furnace body 4 is connected to the secondary combustion chamber 13 via a flue 12, and an air distribution pipe 14 is connected to the secondary combustion chamber 13. The flue gas generated by pyrolysis enters the secondary combustion chamber 13 through the flue 12, and air is introduced into it through the air distribution pipe 14 to ensure complete oxidation and combustion of the flue gas.

[0036] 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 pyrolysis gasifier comprising a furnace body (4), characterised in that: The bottom end of the furnace body (4) is sleeved with an ash chute (10) outside, and the bottom end of the furnace body (4) is provided with a grate (8) inside, the grate (8) is fixedly connected with the ash chute (10), and the ash chute (10) is driven to rotate by a motor (9); A slag discharge gap is arranged between the bottom end of the furnace body (4) and the inner wall of the ash chute (10), and a scraper (5) is fixedly connected to the outside of the furnace body (4), and the scraper (5) is arranged obliquely along the chute wall of the ash chute (10).

2. A pyrolysis gasifier according to claim 1, characterised in that: The grate (8) is in a tower shape, and the axis of the grate (8) is collinear with the axis of the ash chute (10).

3. A pyrolysis gasifier according to claim 1, wherein: The grate (8) is an eccentric structure.

4. A pyrolysis gasifier according to claim 1, wherein: A guide plate (6) is arranged at a position corresponding to the scraper (5) outside the ash chute (10).

5. A pyrolysis gasifier according to claim 1, wherein: The ash chute (10) is rotatably connected with a base (15) through a rotary bearing, a gear ring is fixedly connected to the outside of the ash chute (10), and a gear adapted to the gear ring is fixedly connected to the output shaft of the motor (9).

6. A pyrolysis gasifier according to claim 1, wherein: The outside of the furnace body (4) is provided with a water jacket (3).

7. A pyrolysis gasifier according to claim 1, wherein: The top end of the furnace body (4) is connected with a feeding pipe (1), and two plug valves (2) are arranged at intervals on the feeding pipe (1).

8. A pyrolysis gasifier according to claim 1, wherein: Further comprising a second combustion chamber (13), the furnace body (4) is connected with the second combustion chamber (13) through a flue (12), and the second combustion chamber (13) is connected with an air distribution pipe (14).

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