A novel circulating fluidized bed gasification furnace
By introducing a cleaning component into the circulating fluidized bed gasifier, a drive motor is used to scrape off coal dust from the separation cylinder, solving the problem of coal dust adhesion, improving separation efficiency, and enabling the reuse of coal dust.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINAN HUANGTAI GAS STOVE CO LTD
- Filing Date
- 2025-07-30
- Publication Date
- 2026-07-17
AI Technical Summary
The existing circulating fluidized bed gasifier suffers from reduced separation efficiency due to coal dust adhesion inside the separation cylinder.
A novel circulating fluidized bed gasifier was designed, which includes a cleaning component. A drive motor drives a scraper to rotate inside a separation cylinder, scraping off the adhering coal dust, which is then reinjected into the calcining furnace through a dust discharge cylinder for re-combustion.
This improved the separation efficiency of the separator, prevented coal dust accumulation, ensured the separation effect, and enabled the reuse of coal dust.
Smart Images
Figure CN224516765U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fluidized bed gasification furnaces, specifically a novel circulating fluidized bed gasification furnace. Background Technology
[0002] Fluidized bed combustion is a new type of combustion equipment developed in recent decades. It uses fluidized bed combustion technology to produce steam, high-temperature flue gas, and high-temperature air. It can be widely used in industries such as power generation, papermaking, building materials, chemicals, and metallurgy. Currently, a large amount of coal gangue is generated every year during coal mining and washing in my country. The reason why coal gangue has a low utilization rate is that it is a low-calorific-value, high-ash, and inferior fuel. Many studies are now on how to make full use of coal gangue fuel to achieve heat exchange. At present, circulating fluidized bed boilers can effectively solve this problem.
[0003] Chinese Patent CN203549800U discloses a novel multi-stage combustion circulating fluidized bed furnace, comprising a fluidized bed furnace, a cyclone separator, and a return valve. Its key feature is that the flue gas outlet of the fluidized bed furnace is connected to the cyclone separator, the ash hopper outlet of the cyclone separator is connected to the inlet of the return valve, and the outlet of the return valve is connected to the raw coal particle feed pipe of the fluidized bed furnace. However, the aforementioned patent has some shortcomings. In existing devices, coal dust in the steam is typically filtered for the first time through a separation cylinder. However, during the filtration process, the coal dust rotates and falls within the separation cylinder due to the airflow, causing it to come into contact with the inner wall of the separation cylinder. This results in some coal dust adhering to the inner wall of the separation cylinder, accumulating over time and easily reducing the separation cylinder's effectiveness. Therefore, those skilled in the art have provided a novel circulating fluidized bed gasification furnace to solve the problems mentioned in the background art. Utility Model Content
[0004] The purpose of this invention is to provide a novel circulating fluidized bed gasifier to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A novel circulating fluidized bed gasification furnace includes a calcining furnace, wherein a cooling component is installed inside the calcining furnace, a conveying component is connected to the outer surface of the calcining furnace, a calcining component is installed at the bottom of the calcining furnace, a connecting cylinder is connected to the outer surface of the calcining furnace, a separation component is connected to the right end of the connecting cylinder, a cleaning component is installed inside the separation component, and a control component is installed on the outer surface of the separation component.
[0007] As a further improvement of this utility model: the cooling component includes a water cooler, which is located on the inner wall of the calcining furnace.
[0008] As a further improvement of this utility model: the conveying assembly includes two injection cylinders, and the left ends of both injection cylinders are connected to the material conveying device.
[0009] As a further embodiment of this utility model: the calcination assembly includes a calciner, which is located on the inner bottom wall of the calcination furnace, and a connecting valve is installed at the bottom of the calcination furnace.
[0010] As a further embodiment of this utility model: the separation component includes a separation cylinder, a bottom frame is installed at the bottom end of the separation cylinder, a dust discharge cylinder is connected to the outer surface of the bottom frame, the left end of the dust discharge cylinder is connected to the calcining furnace, and a smoke exhaust cylinder is connected to the upper surface of the separation cylinder.
[0011] As a further embodiment of this utility model: the cleaning component includes a bearing, the bearing is located on the inner bottom wall of the bottom frame, the inner ring of the bearing is connected to a connecting rod, the bottom end of the connecting rod is equipped with a drive motor, the outer surface of the connecting rod is equipped with two support rods, the left ends of the two support rods are connected to a scraper, and the left side of the scraper is in contact with the inner wall of the separation cylinder.
[0012] As a further improvement of this utility model: the control component includes a heat insulation plate, the heat insulation plate is located on the front of the bottom frame, and a control panel is installed on the front of the heat insulation plate.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] This novel circulating fluidized bed gasifier utilizes a drive motor within a cleaning assembly. With the aid of bearings, the motor rotates a connecting rod, causing a scraper fixed to the outer surface of the connecting rod to rotate within the separation cylinder. Because the outer surface of the scraper contacts the inner wall of the separation cylinder, it scrapes off coal dust adhering to the inner wall, ensuring efficient coal dust separation. Furthermore, the fallen coal dust can be reinjected into the calcining furnace via airflow and a dust discharge pipe, preventing coal dust accumulation within the separation cylinder. Attached Figure Description
[0015] Figure 1 A three-dimensional structural schematic diagram of a novel circulating fluidized bed gasification furnace;
[0016] Figure 2 This is a schematic diagram of the front section structure of a novel circulating fluidized bed gasification furnace;
[0017] Figure 3 A top-section schematic diagram of a novel circulating fluidized bed gasification furnace;
[0018] Figure 4 This is a front view schematic diagram of the control components in a novel circulating fluidized bed gasifier.
[0019] In the diagram: 1. Calcination furnace; 2. Cooling component; 3. Conveying component; 4. Calcination component; 5. Separation component; 6. Control component; 7. Cleaning component; 8. Control panel; 9. Connecting valve; 10. Connecting cylinder; 11. Exhaust duct; 12. Dust exhaust duct; 13. Separation cylinder; 14. Water cooler; 15. Injection cylinder; 16. Calcination unit; 17. Drive motor; 18. Bearing; 19. Base frame; 20. Scraper; 21. Connecting rod; 22. Support rod; 23. Insulation plate. Detailed Implementation
[0020] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0022] Please see Figures 1-4 In this embodiment of the present invention, a novel circulating fluidized bed gasification furnace includes a calcining furnace 1, a cooling component 2 installed inside the calcining furnace 1, a conveying component 3 connected to the outer surface of the calcining furnace 1, a calcining component 4 installed at the bottom end of the calcining furnace 1, a connecting cylinder 10 connected to the outer surface of the calcining furnace 1, a separation component 5 connected to the right end of the connecting cylinder 10, a cleaning component 7 installed inside the separation component 5, and a control component 6 installed on the outer surface of the separation component 5. The drive motor 17 installed in the cleaning component 7 can drive the scraper 20 to rotate inside the separation cylinder 13, thereby scraping off the coal dust inside the separation cylinder 13.
[0023] The cooling component 2 includes a water cooler 14, which is located on the inner wall of the calcining furnace 1 and can cool the combustion steam, thereby causing larger coal dust particles that are lifted by the steam to fall down.
[0024] The conveying assembly 3 includes two injection cylinders 15, the left ends of which are connected to the material conveying device to facilitate the injection of materials into the calcining furnace 1.
[0025] The calcination assembly 4 includes a calciner 16, which is located on the inner bottom wall of the calcination furnace 1. A connecting valve 9 is installed at the bottom of the calcination furnace 1. Through the calciner 16, the coal slag injected into the calcination furnace 1 can be fully burned.
[0026] The separation component 5 includes a separation cylinder 13, a bottom frame 19 is installed at the bottom end of the separation cylinder 13, a dust discharge cylinder 12 is connected to the outer surface of the bottom frame 19, the left end of the dust discharge cylinder 12 is connected to the calcining furnace 1, and the upper surface of the separation cylinder 13 is connected to the flue 11. The separated coal dust can be easily injected back into the calcining furnace 1 for recalcination through the dust discharge cylinder 12.
[0027] The cleaning component 7 includes a bearing 18, which is located on the inner bottom wall of the bottom frame 19. The inner ring of the bearing 18 is connected to a connecting rod 21. A drive motor 17 is installed at the bottom end of the connecting rod 21. Two support rods 22 are installed on the outer surface of the connecting rod 21. The left ends of the two support rods 22 are connected to a scraper 20. The left side of the scraper 20 contacts the inner wall of the separation cylinder 13. The speed of the drive motor 17 is set so as not to affect the normal separation effect of the separation cylinder 13, and its specific model should be based on actual use.
[0028] The control assembly 6 includes a heat insulation plate 23 located on the front of the bottom frame 19. The control panel 8 is mounted on the front of the heat insulation plate 23. The heat insulation plate 23 can block heat and prevent damage to the control panel 8.
[0029] The working principle of this utility model is as follows: When using this novel circulating fluidized bed gasifier, the operator first connects the device to the conveying device via the conveying component 3 and connects the various discharge pipes in the device to enable normal operation. Then, the device is started to burn the coal slag inside. Next, the cleaning component 7 in the device is started, causing the drive motor 17 in the cleaning component 7 to drive the connecting rod 21 to rotate at a suitable speed, thereby enabling the scraper 20 to rotate inside the separation cylinder 13 and scrape off the coal dust adhering to the inner wall of the separation cylinder 13. Finally, the scraped coal dust is discharged back into the calcining furnace 1 through the dust discharge pipe 12 for re-combustion.
[0030] The above description is merely a preferred embodiment of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalent elements of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A new circulating fluidized bed vaporizer furnace comprising a calciner (1), characterized in that, The calcining furnace (1) is equipped with a cooling component (2) inside, a conveying component (3) is connected to the outer surface of the calcining furnace (1), a calcining component (4) is installed at the bottom of the calcining furnace (1), a connecting cylinder (10) is connected to the outer surface of the calcining furnace (1), a separation component (5) is connected to the right end of the connecting cylinder (10), a cleaning component (7) is installed inside the separation component (5), and a control component (6) is installed on the outer surface of the separation component (5).
2. A novel circulating fluidized bed vaporizer as claimed in claim 1, wherein, The cooling component (2) includes a water cooler (14) located on the inner wall of the calcining furnace (1).
3. A novel circulating fluidized bed vaporizer as claimed in claim 1, wherein, The conveying assembly (3) includes two injection cylinders (15), the left ends of which are connected to the material conveying device.
4. A novel circulating fluidized bed vaporizer as claimed in claim 1, wherein, The calcination assembly (4) includes a calciner (16), which is located on the inner bottom wall of the calcination furnace (1), and a connecting valve (9) is installed at the bottom of the calcination furnace (1).
5. A novel circulating fluidized bed vaporizer as claimed in claim 1, wherein, The separation component (5) includes a separation cylinder (13), a bottom frame (19) is installed at the bottom end of the separation cylinder (13), a dust discharge cylinder (12) is connected to the outer surface of the bottom frame (19), the left end of the dust discharge cylinder (12) is connected to the calcining furnace (1), and a smoke exhaust cylinder (11) is connected to the upper surface of the separation cylinder (13).
6. A novel circulating fluidized bed vaporizer as claimed in claim 1, wherein, The cleaning assembly (7) includes a bearing (18) located on the inner bottom wall of the bottom frame (19). The inner ring of the bearing (18) is connected to a connecting rod (21). A drive motor (17) is installed at the bottom end of the connecting rod (21). Two support rods (22) are installed on the outer surface of the connecting rod (21). The left ends of the two support rods (22) are connected to a scraper (20). The left side of the scraper (20) is in contact with the inner wall of the separation cylinder (13).
7. A novel circulating fluidized bed vaporizer as claimed in claim 1, wherein, The control component (6) includes a heat insulation plate (23) located on the front of the bottom frame (19), and a control panel (8) is mounted on the front of the heat insulation plate (23).