Flue gas cooling and purifying device for hydrolysis furnace
The flue gas cooling and purification device addresses water waste and high discharge temperatures in hydrolysis furnaces by recirculating water through a cooling system, reducing sewage discharge and improving water reuse efficiency.
Patent Information
- Application Number
- CN202420506857.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-15
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-03-15
AI Technical Summary
The existing hydrolysis furnaces require large amounts of tap water for flue gas cooling, leading to significant water waste and increased sewage load, with high discharge temperatures making sewage treatment challenging, especially in summer.
A flue gas cooling and purification device that recirculates water through a cooling water plate and sedimentation tank, using a meandering cooling water pipe with U-shaped buffer pipes, and connects to a workshop exhaust gas treatment system, reducing water usage and temperature.
Reduces sewage discharge from 30 tons to less than 10 tons per day, maintains discharge water at room temperature, and improves water resource utilization by reusing cooling water, effectively managing sewage treatment loads.
Smart Images
Figure CN222257746U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydrolysis furnaces, in particular to a smoke cooling and purification device for a hydrolysis furnace. Background Art
[0002] The exhaust gas from the hydrolysis furnace needs to be sprayed with water to intercept the flue gas after hydrolysis and cool it down. The common source of spray water is tap water, which overflows directly to the sewage station after spraying. In order to intercept the flue gas, a large amount of water is usually required for spraying and cooling, resulting in nearly 30 tons of water per day, increasing the load of the sewage station and causing waste of water resources; in addition, the water temperature after spraying is relatively high, making it difficult for the sewage station to handle it, and cooling treatment is required in summer, so a flue gas cooling and purification device for a hydrolysis furnace is proposed. Utility Model Content
[0003] 1. Technical issues to be solved
[0004] In view of the deficiencies in the prior art, the utility model provides a flue gas cooling and purification device for a hydrolysis furnace, which solves the problems raised in the above-mentioned background technology.
[0005] (II) Technical solution
[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a flue gas cooling and purification device for a hydrolysis furnace, comprising a hydrolysis furnace, the air inlet end of the hydrolysis furnace is externally connected to a steam injection pipe, the air outlet end of the hydrolysis furnace is externally connected to a sprayer, the air outlet end of the sprayer is externally connected to a smoke exhaust pipe and the smoke in the sprayer is discharged along the smoke exhaust pipe to the workshop waste gas processor, the water outlet end of the sprayer is externally connected to a water tank, the water outlet end of the water tank is externally connected to a cooling water plate for cooling the water in the water tank and the water in the cooling water plate is circulated to the sprayer, and the water tank is provided with a cooling water pipe for auxiliary cooling of the water in the water tank.
[0007] Furthermore, an electric heater is provided between the hydrolysis furnace and the steam injection pipe; an external suction pipe is also provided between the smoke exhaust pipe and the workshop waste gas processor, and the workshop waste gas processor is a liquid-sealed box.
[0008] Furthermore, a sedimentation tank is connected between the sprinkler and the water tank, an overflow pipe connected to the water tank is provided on the outside of the water tank, a collecting box connected to the overflow pipe is provided on the outside of the water tank, a circulating pump for injecting water in the water tank into the cooling water plate is provided between the water tank and the cooling water plate, and a return pipe connected to the water tank is provided between the circulating pump and the cooling water plate.
[0009] Furthermore, a water outlet is provided at the bottom end of the sprayer, a sewage pipe connected to the collecting box is provided at the bottom end of the collecting box, and a discharge pipe is provided at the bottom of the water tank.
[0010] Furthermore, the cooling water pipe is a meandering pipe, and a plurality of buffer pipes with U-shaped cross-sections are arranged in the meandering pipe located in the water tank.
[0011] Furthermore, a displacement pipe connected to the water tank is provided in the meandering pipe.
[0012] This patent changes the source of spray water to water circulation, reuses it, and uses a water tank and cooling water plate for dual cooling, so that the spray water is cooled to room temperature before discharge; and a water line is connected from the cooling water pipe to the water tank to replace the water circulation, preventing the blockage of pipelines and nozzles due to excessive water circulation concentration and COD rise due to multiple hydrolysis. The exhaust pipe of the hydrolysis furnace is also connected to the workshop exhaust gas treatment system to prevent the flue gas generated by the abnormality of the spray system from polluting the environment.
[0013] Compared with the prior art, this flue gas cooling and purification device for a hydrolysis furnace can effectively intercept the flue gas generated by hydrolysis; the sewage discharge is effectively controlled from nearly 30T / day to less than 10T / day, and the discharge water temperature is also controlled at room temperature, which effectively reduces the treatment pressure of the sewage station; the COD of the measured discharge water can be controlled at 1000+, which effectively improves the utilization rate of water resources, and the water replaced in the water tank comes from cooling water, which is also a replacement of the cooling water system, belonging to wastewater reuse. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the utility model.
[0015] In the figure: 1. hydrolysis furnace; 2. steam injection pipe; 3. sprinkler; 4. smoke exhaust pipe; 5. water tank; 6. cooling water plate; 7. cooling water pipe; 8. electric heater; 9. suction pipe; 10. liquid seal box; 11. sedimentation box; 12. overflow pipe; 13. collection box; 14. circulation pump; 15. reflux pipe; 16. water outlet; 17. discharge pipe; 18. round bend pipe; 19. buffer pipe; 20. workshop exhaust gas treatment device; 21. replacement pipe. DETAILED DESCRIPTION
[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0017] See also Figure 1The utility model provides a technical solution: a flue gas cooling and purification device for a hydrolysis furnace, comprising a hydrolysis furnace 1, an air inlet end of the hydrolysis furnace 1 is externally connected to a steam injection pipe 2, an air outlet end of the hydrolysis furnace 1 is externally connected to a sprayer 3, an air outlet end of the sprayer 3 is externally connected to a smoke exhaust pipe 4, and the smoke in the sprayer 3 is discharged to a workshop waste gas processor 20 along the smoke exhaust pipe 4, a water outlet end of the sprayer 3 is externally connected to a water tank 5, a water outlet end of the water tank 5 is externally connected to a cooling water plate 6 for cooling the water in the water tank 5, and the water in the cooling water plate 6 is circulated to the sprayer 3, a sedimentation tank 11 is connected between the sprayer 3 and the water tank 5, an overflow pipe 12 connected to the water tank 5 is provided outside the water tank 5, a collecting box 13 connected to the overflow pipe 12 is provided outside the water tank 5, and a collecting box 13 for collecting water is provided between the water tank 5 and the cooling water plate 6. The water in the box 5 is injected into the circulation pump 14 in the cooling water plate 6. A return pipe 15 connected to the water tank 5 is provided between the circulation pump 14 and the cooling water plate 6. A water outlet 16 is provided at the bottom end of the sprinkler 3. A sewage pipe connected to the collecting box 13 is provided at the bottom end of the collecting box 13. A discharge pipe 17 is provided at the bottom of the water tank 5. A cooling water pipe 7 for auxiliary cooling of the water in the water tank 5 is provided in the water tank 5. The cooling water pipe 7 is a meandering pipe 18. A plurality of buffer pipes 19 with a U-shaped cross-section are provided in the meandering pipe 18 located in the water tank 5. A displacement pipe 21 connected to the water tank 5 is provided in the meandering pipe 18. An electric heater 8 is provided between the hydrolysis furnace 1 and the steam injection pipe 2. A suction pipe 9 is also externally connected between the smoke exhaust pipe 4 and the workshop waste gas processor 20. The workshop waste gas processor 20 is a liquid seal box 10.
[0018] The electrical components mentioned in this article are all connected to an external main controller and 380V commercial power, and the main controller can be a conventional known device for control such as a computer.
[0019] In the description of this specification, the terms "connect", "install", "fix", "set", etc. are understood in a broad sense. For example, "connection" can be a fixed connection or an indirect connection through an intermediate component without affecting the relationship between components and the technical effect. It can also be an integral connection or a partial connection. As in this example, for ordinary technicians in this field, the specific meanings of the above terms in this utility model or utility model can be understood according to the specific circumstances.
[0020] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A flue gas cooling and purification device for a hydrolysis furnace, comprising a hydrolysis furnace (1), characterized in that: The air inlet end of the hydrolysis furnace (1) is externally connected to a steam injection pipe (2), the air outlet end of the hydrolysis furnace (1) is externally connected to a sprayer (3), the air outlet end of the sprayer (3) is externally connected to a smoke exhaust pipe (4), and smoke in the sprayer (3) is discharged along the smoke exhaust pipe (4) to a workshop waste gas treatment device (20), the water outlet end of the sprayer (3) is externally connected to a water tank (5), the water outlet end of the water tank (5) is externally connected to a cooling water plate (6) for cooling the water in the water tank (5), and the water in the cooling water plate (6) is circulated to the sprayer (3), and the water tank (5) is provided with a cooling water pipe (7) for auxiliary cooling of the water in the water tank (5).
2. The flue gas cooling and purification device for a hydrolysis furnace according to claim 1, characterized in that: An electric heater (8) is provided between the hydrolysis furnace (1) and the steam injection pipe (2); an external suction pipe (9) is also provided between the smoke exhaust pipe (4) and the workshop waste gas processor (20); the workshop waste gas processor (20) is a liquid-sealed box (10).
3. The flue gas cooling and purification device for a hydrolysis furnace according to claim 1, characterized in that: A sedimentation tank (11) is connected between the sprayer (3) and the water tank (5); an overflow pipe (12) connected to the water tank (5) is provided outside the water tank (5); a collecting tank (13) connected to the overflow pipe (12) is provided outside the water tank (5); a circulation pump (14) for injecting water in the water tank (5) into the cooling water plate (6) is provided between the water tank (5) and the cooling water plate (6); and a return pipe (15) connected to the water tank (5) is provided between the circulation pump (14) and the cooling water plate (6).
4. The flue gas cooling and purification device for a hydrolysis furnace according to claim 3, characterized in that: The bottom end of the sprayer (3) is provided with a water outlet (16), the bottom end of the collection box (13) is provided with a sewage discharge pipe connected to the collection box (13), and the bottom of the water tank (5) is provided with a discharge pipe (17).
5. The flue gas cooling and purification device for a hydrolysis furnace according to claim 1, characterized in that: The cooling water pipe (7) is a meandering pipe (18), and a plurality of buffer pipes (19) having a U-shaped cross-section are arranged in the meandering pipe (18) located in the water tank (5).
6. The flue gas cooling and purification device for a hydrolysis furnace according to claim 5, characterized in that: The serpentine bend pipe (18) is provided with a displacement pipe (21) which is connected to the water tank (5).