Quenching chamber of gasification furnace
By integrating a slag-breaking structure on the lower side of the gasifier quench chamber shell, using a rotatably connected slag-breaking disc and wear-resistant liner, combined with the meshing of slag-breaking teeth, the slag blockage problem of the gasification unit is solved, achieving a compact structure, reducing the manufacturing cost of the equipment, and improving the stability of the unit.
Patent Information
- Application Number
- CN202520223905.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-12
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-02-12
AI Technical Summary
The existing gasification unit has an unreasonable structure, which leads to problems such as large equipment space occupation and easy slag blockage.
A slag-breaking structure is integrated on the lower side of the gasifier quench chamber shell. A rotatable slag-breaking disc and a wear-resistant liner are used, and the first and second slag-breaking teeth mesh together to break up the slag and avoid slag blockage.
This design achieves a compact structure for the gasifier quench chamber, reduces manufacturing costs, effectively solves the problem of slag accumulation and blockage, and improves the stable operation of the unit.
Smart Images
Figure CN223936443U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of gasifier systems, and in particular to a gasifier quench chamber shell with slag breaking function. Background Technology
[0002] In existing gasification units, a slag-breaking device is often installed between the gasifier and the hopper to prevent large pieces of slag and refractory bricks from falling and clogging the hopper outlet, thus maintaining stable operation. However, traditional slag-breaking devices are independently located at the bottom of the gasifier, resulting in inefficient use of space within the quench chamber shell. A separate pressure vessel is needed to hold the slag-breaking mechanism, undoubtedly increasing the height of the gasification unit and raising the overall equipment and civil engineering costs. Furthermore, traditional slag-breaking devices achieve their function by having moving blades driven by the radial axis of the shell intersect with stationary blades fixed to the inner wall of the gasifier shell. Since the diameter of the moving blades is limited by the shell dimensions and the guide plates have narrowing openings, bridging can easily occur at the top of the slag-breaking device, causing the moving blades to idle and resulting in slag blockage, thus affecting the stable operation of the unit. Utility Model Content
[0003] The technical problem this invention aims to solve is that the existing gasification devices have an unreasonable structure, resulting in a large equipment footprint and a tendency to clog.
[0004] To address the aforementioned technical problems, this utility model provides the following technical solution:
[0005] A gasifier quench chamber includes a quench chamber shell, with a slag-breaking zone formed on the lower side of the quench chamber shell. A slag-breaking assembly is disposed within the slag-breaking zone. The slag-breaking assembly includes a slag-breaking disc rotatably connected to the inner side of the quench chamber shell. The upper surface of the slag-breaking disc is a conical surface, and there is a gap between the outer circumferential surface of the slag-breaking disc and the inner wall of the quench chamber shell. A plurality of first slag-breaking teeth arranged circumferentially are disposed on the conical surface of the slag-breaking disc, and a plurality of second slag-breaking teeth arranged circumferentially are disposed on the inner wall of the quench chamber shell. The first slag-breaking teeth and the second slag-breaking teeth interlock with each other.
[0006] In some embodiments of this utility model, the slag breaking zone of the quench chamber shell is formed into an inverted cone shape opposite to the direction of the conical surface of the slag breaking disc.
[0007] In some embodiments of this utility model, a wear-resistant liner is provided on the inner wall of the slag breaking zone, and the second slag breaking tooth is disposed on the wear-resistant liner.
[0008] In some embodiments of this utility model, the inner wall of the wear-resistant liner is provided with multiple conical surfaces from top to bottom, and the cone angle of the lowest conical surface is smaller than the cone angle of the inner wall of the quench chamber shell. The second slag-breaking tooth is located on the lowest conical surface.
[0009] In some embodiments of this utility model, the upper surface of the slag breaking disc is provided with a first conical surface and a second conical surface from top to bottom, the cone angle of the first conical surface is greater than the cone angle of the second conical surface, and the first slag breaking tooth is provided on the second conical surface of the slag breaking disc.
[0010] In some embodiments of this utility model, the angle between the lowest conical surface of the inner wall of the wear-resistant liner and the second conical surface of the slag-breaking disc is between 30° and 60°.
[0011] In some embodiments of this utility model, a support frame is provided inside the quench chamber shell, and the slag breaking disc is connected to the support frame via bearings.
[0012] In some embodiments of this utility model, a drive assembly for driving the slag-breaking disc to rotate is also included. The drive assembly includes a rotary power device and a transmission assembly. The transmission assembly includes a drive gear fixedly connected to the output shaft of the rotary power device and a gear ring fixedly connected to the slag-breaking disc. The drive gear meshes with the gear ring.
[0013] In some embodiments of this utility model, the rotary power device is installed on the outside of the quench chamber housing, the quench chamber housing is provided with a bushing connector passing through it, the rotary power device is installed at the end of the bushing connector located on the outside of the quench chamber housing, and the output shaft of the rotary power device extends along the bushing connector to the inside of the quench chamber housing and is connected to the drive gear.
[0014] In some embodiments of this utility model, the quench chamber shell includes a detachably connected upper shell and a lower shell, the slag breaking assembly is located in the lower region of the lower shell, and the upper region of the lower shell is cylindrical.
[0015] The technical solution of this utility model has the following technical advantages over the prior art:
[0016] The gasifier quench chamber provided by this utility model integrates a slag-breaking structure on the lower side of the quench chamber shell, eliminating the need for a separate slag-breaking machine. This results in a compact structure, small footprint, and reduced manufacturing costs for the gasifier quench chamber. Furthermore, the slag-breaking structure uses a rotatable slag-breaking disc connected to the quench chamber shell to guide the slag on its upper side. Larger slag particles can also slide down the conical surface of the slag-breaking disc to the slag discharge gap, where they are then broken by the interlocking of the first and second slag-breaking teeth located between them. This completely solves the problem of slag accumulation and blockage in existing gasifiers. Attached Figure Description
[0017] The preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, which will help to understand the purpose and advantages of this utility model, wherein:
[0018] Figure 1 This is a schematic diagram of a specific embodiment of the gasifier quench chamber of this utility model;
[0019] Figure 2 This is a cross-sectional view of a specific embodiment of the gasifier quench chamber of this utility model;
[0020] Figure 3 This is a schematic diagram of a specific embodiment of the slag breaking component in the quench chamber of the gasifier of this utility model. Detailed Implementation
[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0023] 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 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.
[0024] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0025] like Figure 1 , Figure 2The diagram illustrates a specific embodiment of the gasifier quench chamber provided by this utility model. The gasifier quench chamber includes a quench chamber shell 100. The quench chamber shell 100 uses a water bath to preliminarily wash and cool the high-temperature synthesis gas, ensuring that the gas reaches a suitable temperature before entering the next processing step. During the washing process, the quench chamber shell 100 can remove some fly ash and carbon black entrained in the synthesis gas, ensuring the purity of the gas. The quench chamber shell 100 also separates the slag from the synthesis gas, ensuring that the two do not mix, facilitating subsequent processing. The quench chamber shell 100 includes an upper shell and a lower shell detachably connected by flanges. The internal cavity of the quench chamber shell 100 has cooling water for quenching. A gas guide cylinder (not shown in the figure) is provided inside the upper shell to introduce the high-temperature synthesis gas into the water body for quenching. The lower shell... Figure 1 , Figure 2 As shown, it is equipped with a slag breaking component 200 inside.
[0026] Specifically, a slag-breaking zone is formed on the lower side of the quench chamber shell 100, and a slag-breaking assembly 200 is provided in the slag-breaking zone. The slag-breaking assembly 200 includes a slag-breaking disk 201 rotatably connected to the inner side of the quench chamber shell 100. The upper surface of the slag-breaking disk 201 is a conical surface. The slag of the quench chamber shell 100 is guided to slide down the conical surface of the slag-breaking disk 201 to the lower area of the conical surface. The outer peripheral surface of the slag-breaking disk 201 is flush with the inner wall of the quench chamber shell 100. There is a gap between them, specifically, the gap is no more than 50mm, and the slag falls into the slag outlet 100b along the gap between them; a plurality of first slag breaking teeth 202 arranged in a circumferential direction are provided on the conical surface of the slag breaking plate 201, and a plurality of second slag breaking teeth 101 arranged in a circumferential direction are provided on the inner wall of the quench chamber shell 100. The first slag breaking teeth 202 and the second slag breaking teeth 101 interlock with each other to form a slag breaking structure, so as to break the large slag located between them.
[0027] The aforementioned gasifier quench chamber integrates a slag-breaking structure on the lower side of the quench chamber shell 100, eliminating the need for a separate slag-breaking machine. This results in a compact structure, small footprint, and reduced manufacturing costs for the gasifier quench chamber. Furthermore, a slag-breaking disc 201 rotatably connected to the quench chamber shell 100 guides the slag on its upper side. Larger slag pieces can slide down the conical surface of the slag-breaking disc 201 to the slag discharge gap, where they are then crushed by the interlocking of the first slag-breaking tooth 202 and the second slag-breaking tooth 101 located between them. This completely solves the problem of slag accumulation and blockage at the guide plate in existing gasifier quench chambers.
[0028] Specifically, in one optional embodiment, the slag breaking zone of the quench chamber shell 100 is an inverted cone shape. The inverted cone shape of the slag breaking zone makes the slag inlet larger and the slag outlet smaller, which is suitable for introducing large slags from the slag inlet side into the slag breaking zone. The broken slags are then guided by the gradually contracting cone surface of the quench chamber shell 100 to fall to the slag outlet 100b, which facilitates slag collection and avoids the problem of slag fly ash pollution caused by an excessively large slag outlet 100b.
[0029] Specifically, in one optional embodiment, a wear-resistant liner 102 is installed inside the quench chamber shell 100. The wear-resistant liner 102 is made of a material with good wear resistance, such as cast steel or surface-welded with wear-resistant alloy. The second slag-breaking tooth 101 is disposed on the wear-resistant liner 102. By using the wear-resistant liner 102 as a vulnerable part and replacing it periodically, the service life of the quench chamber shell 100 can be improved. More specifically, the wear-resistant liner 102 is connected to the upper end face of the quench chamber shell 100 by fastening components arranged circumferentially. A portion of the wear-resistant liner 102 is embedded in the inner wall of the quench chamber shell 100, and another portion is located on the upper side of the quench chamber shell 100.
[0030] Specifically, in one optional embodiment, the inner wall of the wear-resistant liner 102 is provided with multiple conical surfaces from top to bottom. The cone angle of the lowest conical surface is smaller than the cone angle of the quench chamber shell, and the second slag-breaking tooth 101 is located on the lowest conical surface. More specifically, the inner wall of the wear-resistant liner 102 is divided into a first conical segment 102a and a second conical segment 102b from top to bottom. The cone angle of the first conical segment 102a is between 90° and 120°. The first conical segment 102a of the wear-resistant liner 102 is provided with a plurality of first connecting holes evenly arranged circumferentially. The upper end face of the quench chamber shell 100 is provided with a corresponding second connecting hole. The wear-resistant liner 102 and the quench chamber shell 100 are connected and fixed by fastening screws passing through the first connecting hole and the second connecting hole. The cone angle of the second conical section 102b is smaller than the cone angle of the inner wall of the quench chamber shell 100, which can reduce the engagement interval between the second slag breaking tooth 101 located thereon and the first slag breaking tooth 202 on the slag breaking disc 201, which is beneficial for the first slag breaking tooth 202 and the second slag breaking tooth 101 to bite together and achieve slag crushing.
[0031] Specifically, in one optional embodiment, the upper surface of the slag-breaking disc 201 is provided with a first conical surface 201a and a second conical surface 201b from top to bottom, wherein the cone angle of the first conical surface 201a is larger than the cone angle of the second conical surface 201b. The first slag-breaking teeth 202 are disposed on the second conical surface 201b of the slag-breaking disc 201. In this way, when slag falls onto the first conical surface 201a of the slag-breaking disc 201, it can slide onto the second conical surface 201b with a certain degree of buffering, avoiding the problem that excessive sliding speed would cause excessive impact force of the slag on the wear-resistant liner 102, which would be detrimental to crushing.
[0032] Specifically, in one optional embodiment, the second conical section 102b of the inner wall of the wear-resistant liner 102 forms an angle of 30°-60° with the second conical surface 201b of the slag breaking disc 201. The above-mentioned angle range is conducive to clamping the slag between the two conical surfaces and realizing the rapid crushing of the slag.
[0033] Specifically, in one optional embodiment, the first slag-breaking tooth 202 is formed as a first arc-shaped rib protruding along the upper surface of the second conical surface 201b of the slag-breaking disc 201. The first arc-shaped rib extends from the lower to the upper region of the second conical surface, and a plurality of first slag-breaking teeth 202 are evenly arranged circumferentially. The second slag-breaking tooth 101 is formed as a second arc-shaped rib protruding along the inner surface of the wear-resistant liner 102. The second arc-shaped rib extends from the lower to the upper region of the wear-resistant liner 102, and a plurality of second slag-breaking teeth 101 are evenly arranged circumferentially. When the first slag-breaking tooth 202 and the second slag-breaking tooth 101 engage, the upper arc-shaped curved regions of the first slag-breaking tooth 202 and the second slag-breaking tooth 101 are used to restrict the position of the slag, avoiding the problem of low crushing efficiency caused by the slag rotating circumferentially with the slag-breaking disc 201.
[0034] Specifically, in one optional embodiment, a support frame 203 is provided inside the quench chamber shell 100. The support frame 203 is located below the slag-breaking disc 201, and a bearing seat is provided at the center of the support frame 203. The slag-breaking disc 201 is connected to the bearing seat via a bearing 204. More specifically, the support frame 203 includes a plurality of support arms symmetrically arranged circumferentially, and a support body located on the upper side of the support arms. The slag-breaking disc 201 is rotatably connected to the bearing seat of the support body via a bearing 204.
[0035] Specifically, in one optional embodiment, the gasifier quench chamber further includes a drive assembly for driving the slag-breaking disc 201 to rotate relative to the quench chamber shell 100. This drive assembly includes a rotary power unit (not shown) and a transmission assembly, such as... Figure 3As shown, the transmission assembly includes a drive gear 205 fixedly connected to the output shaft of the rotary power device, and a gear ring 206 fixedly connected to the slag disc 201. The drive gear 205 and the gear ring 206 are meshed together.
[0036] In order to make the gear ring rotate smoothly, in one possible embodiment, two or more drive gears 205 are symmetrically arranged. The multiple drive gears 205 can be driven to rotate by multiple rotary power devices, or the multiple drive gears 205 can be connected by a synchronous belt and driven to rotate by a rotary power device.
[0037] Specifically, the quench chamber housing 100 is further provided with a bushing connector 207 extending through its inner and outer sides. The bushing connector 207 extends vertically, and the rotary power device is installed at the bottom of the bushing connector 207. The output shaft of the rotary power device extends along the bushing connector 207 to the inner side of the quench chamber housing and is connected to the drive gear 205. A stuffing box and a sealing water ring are provided between the end of the bushing connector 207 and the drive shaft.
[0038] More specifically, the rotating power device is a rotary motor or a hydraulic motor, and the power output can realize the functions of forward and reverse rotation.
[0039] The working principle of the gasifier quench chamber is as follows: When carbon-containing raw materials such as coal, coke, and biomass enter the gasifier, they react to generate syngas mainly composed of CO and H2 and molten liquid slag. The syngas and liquid slag enter the upper water area of the gasifier quench chamber. Syngas is cooled and washed in water and flows upward to exit the gasifier; molten liquid slag is cooled to form solid slag, which settles downward and enters the slag breaking assembly 200. The rotational power provided by the drive assembly drives the drive gear 205 through the drive shaft. The drive gear 205 meshes with the gear ring 206, thereby driving the slag breaking disc 201 to rotate. The slag falling on the slag breaking disc 201 slides down the slag breaking disc 201 to the gap between the wear-resistant bushing and the slag breaking disc 201. Slag smaller than 50mm falls through this gap to the slag outlet 100b. Large pieces of slag are broken down step by step by the shearing force between the first slag breaking tooth 202 and the second slag breaking tooth 101 between the wear-resistant bushing and the slag breaking disc 201 and fall through the gap between the wear-resistant liner 102 and the wear-resistant cone disc to the slag outlet 100b for discharge.
[0040] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this utility model.
Claims
1. A gasifier quench chamber, characterized in that, include: A quench chamber shell, wherein a slag-breaking zone is formed in the lower region of the quench chamber shell, and a slag-breaking assembly is provided in the slag-breaking zone, the slag-breaking assembly comprising: A slag-breaking disc is rotatably connected to the inner side of the quench chamber shell. The upper surface of the slag-breaking disc is a conical surface, and there is a gap between the slag-breaking disc and the inner wall of the quench chamber shell. The slag-breaking disc has a plurality of first slag-breaking teeth arranged circumferentially on its conical surface, and the quench chamber shell has a plurality of second slag-breaking teeth arranged circumferentially on its inner wall, with the first slag-breaking teeth and the second slag-breaking teeth meshing with each other.
2. The gasifier quench chamber according to claim 1, characterized in that, The slag breaking zone of the quench chamber shell is shaped as an inverted cone with the direction opposite to that of the conical surface of the slag breaking disc.
3. The gasifier quench chamber according to claim 2, characterized in that, The inner wall of the slag breaking zone is provided with a wear-resistant liner, and the second slag breaking tooth is disposed on the wear-resistant liner.
4. The gasifier quench chamber according to claim 3, characterized in that, The inner wall of the wear-resistant liner is provided with multiple conical surfaces from top to bottom. The cone angle of the lowest conical surface is smaller than the cone angle of the inner wall of the quench chamber shell. The second slag-breaking tooth is located on the lowest conical surface.
5. The gasifier quench chamber according to claim 4, characterized in that, The upper surface of the slag breaking disc is provided with a first conical surface and a second conical surface from top to bottom. The cone angle of the first conical surface is greater than that of the second conical surface. The first slag breaking tooth is provided on the second conical surface of the slag breaking disc.
6. The gasifier quench chamber according to claim 5, characterized in that, The angle between the lowest conical surface of the inner wall of the wear-resistant liner and the second conical surface of the slag-breaking disc is between 30° and 60°.
7. The gasifier quench chamber according to claim 1, characterized in that, The quench chamber shell is equipped with a support frame, and the slag breaking disc is connected to the support frame via bearings.
8. The gasifier quench chamber according to claim 1, characterized in that, It also includes a drive assembly for driving the slag-breaking disc to rotate. The drive assembly includes a rotary power device and a transmission assembly. The transmission assembly includes a drive gear fixedly connected to the output shaft of the rotary power device and a gear ring fixedly connected to the slag-breaking disc. The drive gear meshes with the gear ring.
9. The gasifier quench chamber according to claim 8, characterized in that, The rotary power device is installed on the outside of the quench chamber housing. The quench chamber housing is provided with a bushing connector that passes through it. The rotary power device is installed at the end of the bushing connector located on the outside of the quench chamber housing. The output shaft of the rotary power device extends along the bushing connector to the inside of the quench chamber housing and is connected to the drive gear.
10. The gasifier quench chamber according to claim 1, characterized in that, The quench chamber shell includes a detachably connected upper shell and a lower shell. The slag breaking assembly is located in the lower region of the lower shell, and the upper region of the lower shell is cylindrical.