Waste residue cooling device for thermal power generation

Abstract

The utility model relates to a waste residue cooling device for thermal power generation. A heat exchange box is arranged on one side of a cooling box; a water outlet pipe is arranged at the lower part of one end, far away from the cooling box, of the heat exchange box; a water collecting box is arranged at the bottom in the heat exchange box, and the top of the water collecting box is connected with a plurality of U-shaped heat exchange pipes; a partition plate is arranged in the water collecting box and arranged between the two ports of the same U-shaped heat exchange tube, and a through hole is formed in the bottom of the partition plate. Vapor generated when slag is cooled is blown into the heat exchange box through the ventilation pipe and the air blower, the vapor can be effectively prevented from flowing back through the first protective cover, and damage to the boiler caused by backflow of the vapor is avoided; the water vapor blown into the heat exchange box heats cold water in the heat exchange box through the U-shaped heat exchange pipe, so that the waste of heat is reduced; meanwhile, water drops formed after the water vapor is subjected to heat exchange and liquefaction in the U-shaped pipe flow into the water collecting box, so that the water vapor is collected, and the waste of water resources is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of waste residue treatment devices, in particular to a waste residue cooling device for thermal power generation. Background Art

[0002] Thermal power plants are key facilities for converting traditional energy sources. The selection and design of their waste slag treatment systems are directly impacted by factors such as power generation efficiency, economic costs, and environmental protection. The traditional hydraulic waste slag treatment system for thermal power plants is a stable and mature system, representing the optimal choice based on comprehensive considerations of the current technological, economic, and environmental contexts. However, with technological advancements, growing environmental awareness, and increasing demands for energy efficiency, the limitations of hydraulic waste slag treatment systems have become increasingly apparent. Existing hydraulic waste slag treatment systems use water to cool the hot slag at the furnace bottom. Direct contact between the hot slag and water creates a rapid heat exchange, instantly generating large amounts of water vapor. This water vapor enters the boiler furnace, affecting the furnace temperature distribution and combustion stability, reducing combustion efficiency and potentially causing problems such as coking and ash accumulation, increasing maintenance complexity and costs. Furthermore, the water vapor releases a significant amount of heat from the waste slag directly into the atmosphere, preventing heat recovery and resulting in significant energy waste. Furthermore, maintaining the normal operation of the hydraulic waste slag treatment system consumes significant amounts of water resources, which cannot be recovered even after conversion to water vapor, exacerbating water resource constraints. Therefore, designing and developing a waste slag treatment device that causes less damage to the furnace, reduces water waste, and improves heat recovery efficiency is of great significance to improving the overall economic benefits of thermal power plants. Utility Model Content

[0003] In response to the problems in the prior art that water vapor easily enters the boiler furnace, resulting in heat waste and water resource waste, the utility model provides a waste slag cooling device that utilizes the heat of the waste slag while also recovering water resources.

[0004] To achieve the above purpose, the technical solution of the utility model is as follows:

[0005] A waste slag cooling device for thermal power generation, comprising a cooling box and a heat exchange box; a feeder and a discharger are respectively provided on both sides of the cooling box, and a protective cover 1 and a protective cover 2 are respectively provided on the outsides of the feeder and the discharger, and a feeding pipe is provided on the top of the protective cover 1; a fixing pipe is provided on the top of the cooling box, and a discharge pipe is provided on the bottom; a guide plate is provided at one end of the cooling box near the feeder, and the end of the discharger extends to the bottom of the guide plate; a water supply pipe is provided on the upper part of the cooling box, and the heat exchange box is provided on one side of the cooling box; the heat exchange box A water inlet pipe is provided at the upper part of one end away from the cooling box, and a water outlet pipe is provided at the lower part; a water collecting box is provided at the bottom inside the heat exchange box, and the two ends of the top of the water collecting box are respectively connected to the air inlet pipe and the exhaust pipe extending to the outside of the heat exchange box, and the air inlet pipe is connected to the fixed pipe through a connecting pipe; a plurality of U-shaped heat exchange tubes are connected to the top of the water collecting box; a drain pipe extending to the outside of the heat exchange box is provided at the lower part of one end of the water collecting box; a plurality of partitions are provided inside the water collecting box, and the partition is arranged between the two ports of the same U-shaped heat exchange tube, and a through hole is provided at the bottom of the partition.

[0006] Furthermore, the feeder and the discharger are both chain conveyors.

[0007] Furthermore, a ventilation pipe is provided at one end of the protective cover.

[0008] Furthermore, protective plates are provided on both sides of the material guide plate, and a plurality of through holes are provided on the protective plates.

[0009] Furthermore, a filter is provided at the pipe mouth of the fixed pipe located inside the cooling box; a water pipe is provided at the upper part of the cooling box, one end of the water pipe extends to the bottom of the filter and is connected to a nozzle, and a plurality of nozzles are provided on the nozzle.

[0010] Furthermore, liquid level gauges are provided inside the heat exchange box and the water collecting box.

[0011] Furthermore, the discharge pipe, water supply pipe, water delivery pipe, water inlet pipe, water outlet pipe and drain pipe are all provided with solenoid valves.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model provides a waste slag treatment device which causes little damage to the furnace, reduces water resource waste, and improves heat recovery and utilization rate. Water vapor generated when the slag is cooled is blown into the heat exchange box through a ventilation pipe and a blower, which can effectively prevent the water vapor from flowing back through a protective cover, thereby avoiding the water vapor backflow causing damage to the boiler and affecting the combustion efficiency; the water vapor blown into the heat exchange box heats the cold water in the heat exchange box through the U-shaped heat exchange tube, thereby reducing heat waste and improving heat recovery and utilization rate; at the same time, water droplets formed after the water vapor is liquefied by heat exchange in the U-shaped tube flow into the water collecting box, thereby realizing the collection of water vapor and reducing water resource waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following further describes the embodiments of the present invention with reference to the accompanying drawings, wherein:

[0015] Figure 1 A first structural schematic diagram of an embodiment of a waste slag cooling device for thermal power generation is shown;

[0016] Figure 2 A second structural schematic diagram of an embodiment of a waste slag cooling device for thermal power generation is shown;

[0017] Figure 3 shows a cross-sectional view of an embodiment of a cooling box;

[0018] Figure 4 A cross-sectional view of an embodiment of a heat exchange box is shown;

[0019] Figure identification: 1. Cooling box; 2. Feeder; 3. Discharger; 4. Protective cover 1; 5. Protective cover 2; 6. Fixed pipe; 7. Discharge pipe; 8. Water supply pipe; 9. Guide plate; 10. Ventilation pipe; 11. Feed pipe; 12. Protective plate; 13. Filter; 14. Water pipe; 15. Nozzle; 16. Heat exchange box; 17. Water inlet pipe; 18. Water outlet pipe; 19. Water collecting box; 20. Air inlet pipe; 21. Exhaust pipe; 22. Heat exchange pipe; 23. Connecting pipe; 24. Drain pipe; 25. Partition. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] Reference Attachment Figure 1-4A waste slag cooling device for thermal power generation includes a cooling box 1 and a heat exchange box 16; a feeder 2 and a discharger 3 are provided on both sides of the cooling box 1, and a protective cover 1 4 and a protective cover 2 5 are provided on the outside of the feeder 2 and the discharger 3, respectively. A feed pipe 11 is provided on the top of the protective cover 1 4, and the feed pipe 11 is connected to the slag discharge pipe of the boiler; a fixed pipe 6 is provided on the top of the cooling box 1, and a discharge pipe 7 is provided on the bottom; a guide plate 9 is provided at one end of the cooling box 1 near the feeder 2, and the end of the discharger 3 extends to the bottom of the guide plate 9; a water supply pipe 8 is provided on the upper part of the cooling box 1, and a heat exchange box 16 is provided on one side of the cooling box 1; the heat exchange box 16 is away from the end of the cooling box 1 A water inlet pipe 17 is provided at the upper part, and a water outlet pipe 18 is provided at the lower part; a water collecting box 19 is provided at the bottom inside the heat exchange box 16, and the water collecting box 19 is used to collect water droplets formed after the water vapor is liquefied; the two ends of the top of the water collecting box 19 are respectively connected to the air inlet pipe 20 and the exhaust pipe 21 extending to the outside of the heat exchange box 16, and the air inlet pipe 20 is connected to the fixed pipe 6 through the connecting pipe 23; a plurality of U-shaped heat exchange tubes 22 are connected to the top of the water collecting box 19; a drain pipe 24 extending to the outside of the heat exchange box 16 is provided at the lower part of one end of the water collecting box 19; a plurality of partitions 25 are provided inside the water collecting box 19, and the partition 25 is arranged between the two ports of the same U-shaped heat exchange tube 22, and a through hole is provided at the bottom of the partition 25.

[0022] In one embodiment of the present invention, the feeder 2 and the discharger 3 are both chain conveyors.

[0023] In one embodiment of the present invention, a ventilation pipe 10 is provided at one end of the protective cover 4, and the ventilation pipe 10 is connected to the output end of the blower.

[0024] In one embodiment of the present invention, protective plates 12 are provided on both sides of the guide plate 9. The protective plates 12 can prevent the slag from splashing and falling to both sides of the discharge machine 3, so that part of the slag cannot be discharged in time; a plurality of through holes are provided on the protective plate 12 so that cooling water can pass through the protective plate 12.

[0025] In one embodiment of the present invention, a filter screen 13 is provided at the pipe mouth of the fixed pipe 6 located inside the cooling box for filtering the slag in the gas; a water pipe 14 is provided at the upper part of the cooling box 1, one end of the water pipe 14 extends to the bottom of the filter screen 13 and is connected to a nozzle 15, which is provided with multiple nozzles for flushing the filter screen 13.

[0026] In one embodiment of the present invention, liquid level gauges are provided inside the heat exchange box 16 and the water collecting box 19 to facilitate draining the water collecting box 19 and replenishing water to the heat exchange box 16 .

[0027] In one embodiment of the present invention, the discharge pipe 7 , the water supply pipe 8 , the water delivery pipe 14 , the water inlet pipe 17 , the water outlet pipe 18 and the drain pipe 24 are all provided with solenoid valves.

[0028] When in use, the water supply pipe 8, the water delivery pipe 14 and the water inlet pipe 17 are connected to the water supply pipe; the water supply pipe 8 injects cooling water into the cooling box 1, so that the part of the discharger 3 located in the cooling box 1 is completely immersed in the cold water; when the boiler is discharging slag, the blower is turned on, and the slag is transported to the cold water inside the cooling box 1 through the feeder 2, so as to achieve rapid cooling of the slag, and the cooled slag is discharged under the action of the discharger 3; the blower blows air into the cooling box 1, and blows the water vapor generated when the slag is cooled into the heat exchange box 16, which can effectively prevent the water vapor from flowing back and reduce the damage to the boiler caused by the water vapor; the water vapor passes through the connecting pipe 23 and The air inlet pipe 20 enters the water collecting box 19, and heats the cold water in the heat exchange box 16 through the heat exchange tube 22, thereby reducing heat waste. The gas after heat exchange is discharged through the exhaust pipe 21; a certain amount of water is preset in the water collecting box 19, so that the through holes at the bottom of the partition 25 are all immersed in water, thereby ensuring that water vapor can pass through multiple heat exchange tubes 22 in sequence, and at the same time ensure that the lower part of the water collecting box 19 is connected, and the water droplets after the liquefaction of water vapor are discharged through the drain pipe 24, thereby reducing the waste of water resources; when the machine is shut down for maintenance, the solenoid valve on the water supply pipe 14 is opened, and water is sprayed to the filter 13 through the nozzle on the nozzle 15 to flush the filter 13.

[0029] The utility model provides a waste slag treatment device which causes little damage to the furnace, reduces water resource waste, and improves heat recovery and utilization rate. Water vapor generated when the slag is cooled is blown into the heat exchange box through a ventilation pipe and a blower, which can effectively prevent the water vapor from flowing back through a protective cover, thereby avoiding the water vapor backflow causing damage to the boiler and affecting the combustion efficiency; the water vapor blown into the heat exchange box heats the cold water in the heat exchange box through the U-shaped heat exchange tube, thereby reducing heat waste and improving heat recovery and utilization rate; at the same time, water droplets formed after the water vapor is liquefied by heat exchange in the U-shaped tube flow into the water collecting box, thereby realizing the collection of water vapor and reducing water resource waste.

[0030] Some exemplary embodiments of the present invention are described above. It will be understood that the above embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention. The features in these embodiments can be recombined in an appropriate manner, and the solutions obtained thereby are still within the scope of protection claimed by the present invention. Based on the above embodiments, all other embodiments obtained by those skilled in the art without making any creative work, that is, all modifications, equivalent substitutions and improvements made within the spirit and principles of this application, fall within the scope of protection claimed by the present invention.

Claims

1. A waste slag cooling device for thermal power generation, characterized in that: The invention comprises a cooling box (1) and a heat exchange box (16); a feeder (2) and a discharger (3) are respectively provided on both sides of the cooling box (1); a protective cover (4) and a protective cover (5) are respectively provided on the outside of the feeder (2) and the discharger (3); a feed pipe (11) is provided on the top of the protective cover (4); a fixed pipe (6) is provided on the top of the cooling box (1), and a discharge pipe (7) is provided on the bottom; a guide plate (9) is provided at one end of the cooling box (1) close to the feeder (2), and the end of the discharger (3) extends to the bottom of the guide plate (9); a water supply pipe (8) is provided on the upper part of the cooling box (1), and the heat exchange box (16) is provided on one side of the cooling box (1); the heat exchange box (16) is provided at one end away from the cooling box (1) A water inlet pipe (17) is provided at the upper end, and a water outlet pipe (18) is provided at the lower end; a water collecting box (19) is provided at the bottom of the heat exchange box (16); the top ends of the water collecting box (19) are respectively connected to an air inlet pipe (20) and an air outlet pipe (21) extending to the outside of the heat exchange box (16); the air inlet pipe (20) is connected to the fixed pipe (6) through a connecting pipe (23); the top of the water collecting box (19) is connected to a plurality of U-shaped heat exchange tubes (22); the lower part of one end of the water collecting box (19) is provided with a drain pipe (24) extending to the outside of the heat exchange box (16); a plurality of partitions (25) are provided inside the water collecting box (19), the partitions (25) are arranged between the two ports of the same U-shaped heat exchange tube (22), and the bottom of the partitions (25) is provided with through holes.

2. The waste slag cooling device for thermal power generation according to claim 1, characterized in that: The feeder (2) and the discharger (3) are both chain conveyors.

3. The waste slag cooling device for thermal power generation according to claim 1, characterized in that: A ventilation pipe (10) is provided at one end of the protective cover (4).

4. The waste slag cooling device for thermal power generation according to claim 1, characterized in that: Protective plates (12) are provided on both sides of the guide plate (9), and a plurality of through holes are provided on the protective plates (12).

5. The waste slag cooling device for thermal power generation according to claim 1, characterized in that: The fixed pipe (6) is provided with a filter screen (13) at its pipe opening inside the cooling box; a water pipe (14) is provided on the upper portion of the cooling box (1), one end of the water pipe (14) extends to the bottom of the filter screen (13) and is connected to a nozzle (15), and a plurality of nozzles are provided on the nozzle (15).

6. The waste slag cooling device for thermal power generation according to claim 1, characterized in that: Liquid level gauges are provided inside the heat exchange box (16) and the water collecting box (19).

7. The waste slag cooling device for thermal power generation according to claim 5, characterized in that: The discharge pipe (7), water supply pipe (8), water delivery pipe (14), water inlet pipe (17), water outlet pipe (18) and drain pipe (24) are all provided with solenoid valves.

Images