Deslagging chute for incinerator
By adopting a water-cooled jacket structure in the slag discharge chute of the incinerator, the problems of waste heat utilization and high equipment costs have been solved, waste heat recovery and equipment miniaturization have been achieved, and maintenance costs have been reduced.
Patent Information
- Application Number
- CN202422975715.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-04
AI Technical Summary
Existing incinerator slag discharge chutes cannot effectively utilize the residual heat of slag and boiler ash, and the refractory casting layer is costly and easily damaged, resulting in high maintenance costs and large equipment size.
The water-cooled jacket structure, consisting of an inner plate and an outer plate, allows for heat exchange between incinerator slag and boiler ash as they pass through the inner cavity of the inner plate. Coolant flows within the jacket to cool the slag and recover heat, eliminating the need for a refractory casting layer.
It enables the recovery and utilization of waste heat from slag and boiler ash, reduces equipment maintenance costs and volume, saves water resources, and improves the space utilization efficiency of the equipment.
Smart Images
Figure CN223537645U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a waste incinerator device, and more particularly to a slag discharge chute for an incinerator. Background Technology
[0002] The slag produced by the incineration of waste in the incinerator enters the slag discharge machine through the slag discharge chute. The slag discharge chute is used to receive and transport the slag after combustion in the furnace of the municipal solid waste incinerator and the boiler ash collected and transported from the upper waste heat boiler passage. The slag and boiler ash are at a high temperature when passing through the slag discharge chute. In industrial production, a common method is to add a refractory castable layer to the inner surface of the slag discharge chute that comes into contact with the incinerator slag and boiler ash to protect the slag discharge chute. At the same time, insulation material is wrapped around the outer surface of the slag discharge chute to reduce heat loss. This method cannot achieve the reuse of waste heat from the incinerator slag and boiler ash, and the refractory castable is expensive and easily damaged, resulting in high maintenance costs for the slag discharge chute. In addition, because the refractory castable layer inside the slag discharge chute has a certain thickness, the volume of the slag discharge chute is large, which reduces the usable space of adjacent equipment. Utility Model Content
[0003] The purpose of this invention is to provide a slag discharge chute for incinerators that can utilize the waste heat of incinerator slag and boiler ash, and is small in size and has low maintenance costs.
[0004] To achieve the above objectives, this utility model provides a slag discharge chute for an incinerator, comprising an inner plate and an outer plate, both of which are cylindrical. The outer plate is located around the inner plate. The inner cavity of the inner plate is used to transport slag and boiler ash. A water-cooled jacket is formed between the inner plate and the outer plate. One end of the water-cooled jacket along its length is provided with a coolant inlet, and the other end is provided with a coolant outlet. The coolant in the water-cooled jacket flows from the coolant inlet end to the coolant outlet end.
[0005] Furthermore, it also includes multiple longitudinal partitions, each of which is connected between the inner plate and the outer plate. Each longitudinal partition is arranged along the length direction of the inner plate and the outer plate. The multiple longitudinal partitions divide the water-cooling jacket into multiple independent spaces, and each independent space is provided with a coolant inlet and a coolant outlet.
[0006] Furthermore, the coolant flow direction within the water-cooled jacket is opposite to the conveying direction of the slag and boiler ash.
[0007] Furthermore, it also includes a coolant inlet pipe, which is connected to the coolant inlet of each of the independent spaces.
[0008] Furthermore, the coolant inlet pipe extends along one end of the water-cooling jacket near the coolant inlet, and a first through hole is provided on the coolant inlet pipe at a position corresponding to each of the independent spaces, through which the coolant enters the independent space.
[0009] Furthermore, it also includes a transverse partition, which is disposed in the end of the water-cooling jacket near the coolant outlet. A baffle is provided at the end of the water-cooling jacket near the coolant outlet. A water outlet receiving space is formed between the transverse partition and the baffle. A water outlet is provided in the water outlet receiving space. A second through hole is provided at the position corresponding to each of the independent spaces on the transverse partition. The coolant in each of the independent spaces enters the water outlet receiving space through the second through hole.
[0010] Furthermore, the inner plate is made of high-strength wear-resistant steel plate, and the outer plate is made of ordinary carbon steel.
[0011] Furthermore, the coolant input pipe is connected to the condenser via a water inlet pipe. A condensate pump and a booster pump are installed on the water inlet pipe. The condensate from the condenser is pressurized by the condensate pump and the booster pump before entering the coolant input pipe. The outlet is connected to a water-using device.
[0012] The slag discharge chute for the incinerator of this utility model has at least the following beneficial effects:
[0013] This utility model relates to a slag discharge chute for incinerators. It includes an inner plate and an outer plate. The inner cavity of the inner plate is used to transport slag and boiler ash. A water-cooled jacket is formed between the inner and outer plates. Therefore, when the slag and boiler ash pass through the inner cavity of the inner plate, they exchange heat with the inner plate. After the temperature decreases, the slag discharge chute outlet is discharged, reducing the water consumption of the slag discharge machine. The cooling water exchanges heat with the inner plate in the water-cooled jacket and is heated. The heated cooling water is discharged from the coolant outlet for reuse, making it more energy-efficient and environmentally friendly. Furthermore, because the slag discharge chute no longer requires a refractory casting material layer, it reduces equipment costs and size, freeing up space for adjacent components.
[0014] The following description, in conjunction with the accompanying drawings, details the slag discharge chute for the incinerator of this utility model. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the slag discharge chute for the incinerator of this utility model after installation.
[0016] Figure 2 This is a schematic diagram of the slag discharge chute for the incinerator of this utility model;
[0017] Figure 3 This is a schematic diagram showing the flow direction of the cooling liquid in the slag discharge chute of the incinerator of this utility model;
[0018] Figure 4 This is a front view of the slag discharge chute for the incinerator of this utility model;
[0019] Figure 5 for Figure 4 BB-direction sectional view. Detailed Implementation
[0020] like Figure 1 , Figure 3 , Figure 4 , Figure 5 As shown, this utility model discloses a slag discharge chute for an incinerator, comprising an inner plate 11 and an outer plate 12, both forming a cylindrical shape. The outer plate 12 is located around the inner plate 11. The inner cavity of the inner plate 11 is used to transport slag and boiler ash. A water-cooled jacket 14 is formed between the inner plate 11 and the outer plate 12. One end of the water-cooled jacket 14 along its length is provided with a coolant inlet, and the other end is provided with a coolant outlet. The coolant in the water-cooled jacket 14 flows from the coolant inlet to the coolant outlet. In this embodiment, the coolant is water. When the slag and boiler ash pass through the inner cavity of the inner plate 11, they exchange heat with the inner plate 11. After the temperature of the slag and boiler ash decreases, they are discharged from the outlet of the slag discharge chute. The cooling water flows from the coolant inlet into the water-cooled jacket 14. Inside the water-cooled jacket 14, the cooling water exchanges heat with the inner plate 11 and is heated. The heated cooling water is discharged from the coolant outlet for reuse. This utility model relates to a slag discharge chute for an incinerator. It includes an inner plate 11 and an outer plate 12. The inner cavity of the inner plate 11 is used to transport slag and boiler ash. A water-cooled jacket 14 is formed between the inner plate 11 and the outer plate 12. Therefore, when the slag and boiler ash pass through the inner cavity of the inner plate 11, they exchange heat with the inner plate 11. After the temperature decreases, the slag is discharged from the outlet of the slag discharge chute, reducing the water consumption of the slag discharger. The cooling water exchanges heat with the inner plate 11 within the water-cooled jacket 14, recovering and utilizing the heat from the slag and boiler ash. The heated cooling water is discharged from the coolant outlet for reuse, making it more energy-efficient and environmentally friendly. Furthermore, because the slag discharge chute no longer requires a refractory casting material layer, it reduces equipment costs and size, freeing up space for adjacent components.
[0021] Optionally, the system also includes multiple longitudinal partitions 15, each connected between the inner plate 11 and the outer plate 12. Each longitudinal partition 15 is arranged along the length of the inner plate 11 and the outer plate 12. These partitions divide the water-cooled jacket 14 into multiple independent spaces 142. Each independent space 142 has a coolant inlet and a coolant outlet. Cooling water enters each independent space 142, exchanges heat with the inner plate 11, and then exits. The longitudinal partitions 15 divide the water-cooled jacket 14 into multiple independent spaces 142, ensuring uniform distribution and heating of the cooling water. Furthermore, the longitudinal partitions 15 also act as reinforcing ribs, enhancing the strength of the slag discharge chute for the incinerator of this invention.
[0022] Optionally, the coolant flow direction in the water-cooled jacket 14 is opposite to the conveying direction of the slag and boiler ash. The coolant flows in the water-cooled jacket 14 under a certain pressure, so that the coolant and the inner plate 11, and the inner plate 11 and the slag and boiler ash can exchange heat fully.
[0023] Optionally, it also includes a coolant inlet pipe 16, which is connected to the coolant inlet of each individual space 142.
[0024] Optionally, the coolant inlet pipe 16 extends along one end of the water-cooled jacket 14 near the coolant inlet. A first through hole 161 is provided on the coolant inlet pipe 16 at a position corresponding to each independent space 142, through which coolant enters the independent space 142. Specifically, the coolant inlet pipe 16 is welded to the inner plate 11 and the outer plate 12.
[0025] Optionally, it also includes a transverse partition 17, which is disposed within the end of the water-cooled jacket 14 near the coolant outlet. A baffle 141 is also provided at the end of the water-cooled jacket 14 near the coolant outlet. A water outlet receiving space 18 is formed between the transverse partition 17 and the baffle 141. A water outlet 181 is provided on the water outlet receiving space 18. A second through hole is provided at a position corresponding to each independent space 142 on the transverse partition 17. Cooling water in each independent space 142 enters the water outlet receiving space 18 through the second through hole and is discharged through the water outlet 181. Specifically, the baffle 141 is a flange plate, facilitating the installation of the slag discharge chute for the incinerator of this utility model.
[0026] Optionally, the inner plate 11 is made of high-strength wear-resistant steel plate, and the outer plate 12 is made of ordinary carbon steel material, so as to reduce the manufacturing cost of the equipment while ensuring that the overall strength of the slag discharge chute equipment is sufficient.
[0027] Optionally, such as Figure 2 As shown, the coolant inlet pipe 16 is connected to the condenser 163 via the water inlet pipe 162. The water inlet pipe 162 is equipped with a condensate pump 164 and a booster pump 165. The condensate from the condenser 163 is pressurized by the condensate pump 164 and the booster pump 165 and then enters the coolant inlet pipe 16. The outlet 181 is connected to the hot water device of the thermal system. The condensate from the condenser 163 is heated in the water-cooled jacket 14 and then returned to the thermal system of the power plant, realizing the reuse of waste heat from incinerator slag and boiler ash, and improving the efficiency of the power plant.
[0028] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.
Claims
1. A slag discharge chute for an incinerator, characterized in that: It includes an inner plate (11) and an outer plate (12), both of which are cylindrical. The outer plate (12) is located around the inner plate (11). The inner cavity of the inner plate (11) is used to transport slag and boiler ash. A water-cooled jacket (14) is formed between the inner plate (11) and the outer plate (12). The water-cooled jacket (14) has a coolant inlet at one end along its length and a coolant outlet at the other end. The coolant in the water-cooled jacket (14) flows from the coolant inlet to the coolant outlet.
2. The slag discharge chute for an incinerator according to claim 1, characterized in that: It also includes multiple longitudinal partitions (15), each of which is connected between the inner plate (11) and the outer plate (12). Each of the longitudinal partitions (15) is arranged along the length direction of the inner plate (11) and the outer plate (12). The multiple longitudinal partitions (15) divide the water-cooled jacket (14) into multiple independent spaces (142), and each of the independent spaces (142) is provided with a coolant inlet and a coolant outlet.
3. The slag discharge chute for an incinerator according to claim 1, characterized in that: The coolant in the water-cooled jacket (14) flows in the opposite direction to the conveying direction of the slag and the boiler ash.
4. The slag discharge chute for an incinerator according to claim 2, characterized in that: It also includes a coolant inlet pipe (16) that is connected to the coolant inlet of each of the individual spaces (142).
5. The slag discharge chute for an incinerator according to claim 4, characterized in that: The coolant inlet pipe (16) extends along one end of the water-cooled jacket (14) near the coolant inlet. A first through hole (161) is provided on the coolant inlet pipe (16) at a position corresponding to each of the independent spaces (142). The coolant enters the independent space (142) through the first through hole (161).
6. The slag discharge chute for an incinerator according to claim 5, characterized in that: It also includes a transverse partition (17), which is disposed in the end of the water-cooled jacket (14) near the coolant outlet. The end of the water-cooled jacket (14) near the coolant outlet is also provided with a baffle (141). A water outlet receiving space (18) is formed between the transverse partition (17) and the baffle (141). A water outlet (181) is provided on the water outlet receiving space (18). A second through hole is provided at the position corresponding to each of the independent spaces (142) on the transverse partition (17). The coolant in each of the independent spaces (142) enters the water outlet receiving space (18) through the second through hole.
7. The slag discharge chute for an incinerator according to claim 1, characterized in that: The inner plate (11) is made of high-strength wear-resistant steel plate, and the outer plate (12) is made of ordinary carbon steel.
8. The slag discharge chute for an incinerator according to claim 6, characterized in that: The coolant inlet pipe (16) is connected to the condenser (163) through the water inlet pipe (162). The water inlet pipe (162) is equipped with a condensate pump (164) and a pressurized water pump (165). The condensate from the condenser (163) is pressurized by the condensate pump (164) and the pressurized water pump (165) and then enters the coolant inlet pipe (16). The outlet (181) is connected to a water-using device.