Novel water-cooling gate device for outlet flue of fixed anode furnace in recycled copper industry
By improving the water-cooled gate structure of the anode furnace outlet flue, including the settling chamber, air-sealed air duct and annular smoke hood, and using softened water circulation cooling and a steel internal insulation gate frame, the problems of gate coking, jamming and smoking were solved, the equipment stability was improved and environmental pollution was reduced.
Patent Information
- Application Number
- CN202422957544.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-12-02
AI Technical Summary
The existing anode furnace outlet flue gate is prone to coking and getting stuck, and there are problems such as scaling of the gate or gate frame, water leakage, damage due to high temperature, and smoke in the flue, which affects equipment stability and environmental pollution.
A new type of water-cooled flue gate device for the fixed anode furnace outlet in the recycled copper industry is designed. It adopts an improved structure of water-cooled flue gate and gate frame, including a settling chamber, air-sealed air duct and an annular smoke collection hood. It uses softened water for forced circulation cooling and is equipped with water temperature and pressure alarm devices. It uses a steel internal insulation gate frame and an electric hoist for lifting.
It effectively solves the problems of gate coking, sticking, scaling and smoking, improves equipment stability, reduces the probability of gate damage and reduces environmental pollution.
Smart Images
Figure CN223412510U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of anode furnace outlet flue gates, in particular to a novel fixed anode furnace outlet flue water-cooling gate device in the recycled copper industry. Background Art
[0002] Currently, the secondary copper industry primarily relies on stationary anode furnaces as its primary refining furnaces. The flue gas temperature at the anode furnace outlet is extremely high, reaching around 1300°C. The flue gas contains high levels of dust and carries some molten metal or metal oxides, which can easily cause coking. The anode furnace's operating life varies periodically, with flue gas volumes varying at each stage. Excessive carbon monoxide is generated during the reduction phase, which, if improperly handled, can accumulate in downstream equipment and cause explosions.
[0003] At present, most traditional anode furnace outlet flue gates adopt a water-cooled gate and a water-cooled gate frame structure with circulating water cooling in the furnace body. There are problems such as easy coking causing the gate to get stuck, scaling of the gate or gate frame or uneven water distribution, the gate temperature is too high and it is easy to be damaged and leaked, and smoke from the flue gate causes environmental pollution. Utility Model Content
[0004] In order to solve the above technical problems, the utility model designs a novel water-cooled gate device for the flue outlet of a fixed anode furnace in the recycled copper industry.
[0005] The utility model adopts the following technical solutions:
[0006] A novel water-cooled gate device for the flue outlet of a fixed anode furnace in the recycled copper industry comprises a flue and a gate frame disposed within the flue. The gate frame is provided with a gate, and a water-cooled flue gate is installed within the gate. An ash outlet is provided at the bottom of the gate below the water-cooled flue gate, and the bottom of the ash outlet is connected to a settling chamber. An air-sealed air duct and a ring smoke hood are sequentially disposed from bottom to top at the movable joint between the water-cooled flue gate and the gate frame. The air-sealed air duct comprises a blower, a duct, and an air hood, and the ring smoke hood comprises a smoke hood, a duct, a bag dust collector, and a fan. The blower blows air through the duct and the air hood to the smoke leakage point of the gate, forming a gas seal to reduce smoke overflow. The small amount of smoke that overflows enters the ring dust collection system through the smoke hood, duct, bag dust collector, fan, etc., and is then discharged after being treated to meet the standards. An ash dropout port is located at the bottom of the gate, and a settling chamber is located below. Dust and small amounts of coke that would otherwise settle on the gate plate are preferentially dropped into the settling chamber, mitigating the risk of dust accumulation affecting the gate opening and closing. This prevents the need to periodically clean the flue at high temperatures during normal furnace production to remove accumulated dust and coke.
[0007] Preferably, the water-cooled flue gate uses forced circulation of softened water for cooling and consists of a high-level soft water tank, a circulation pump, valves, and piping. The calcium and magnesium ion hardness in the softened water is below 0.01 mmol / L, making it less susceptible to scaling at high temperatures. This significantly reduces the risk of gate burnout due to localized high temperatures caused by scaling within the gate.
[0008] Preferably, the water-cooled flue gate is also equipped with a water temperature and pressure alarm device. The newly added water temperature and pressure alarm device can provide timely warnings in the event of valve misoperation or water shortage, thereby reducing the risk of gate burnout due to water shortage.
[0009] Preferably, the gate frame is a steel internal insulation gate frame. The original water-cooled flue gate frame is changed from water-cooled to refractory material, which reduces the failure points of water cooling and improves system stability.
[0010] Preferably, the top of the water-cooled flue gate is connected to and raised and lowered by an electric hoist.
[0011] Preferably, the flue is a brick flue.
[0012] The beneficial effects of the utility model are as follows: the utility model adopts a structure in which a hole is opened at the bottom of the gate below the flue gate and a sedimentation chamber is added, so as to solve the problem that the gate cannot be lowered or is stuck due to dust or coking at the gate; only the flue gate is water-cooled, and the softened water high-level water tank is forced to supply water for cooling through a special pump, which greatly reduces the probability of gate damage; the problem of smoke pollution is solved by adding an air sealing airway and a ring smoke collection hood at the joint between the gate and the gate frame. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of the utility model;
[0014] In the figure: 1. Brick flue, 2. Steel internal insulation gate frame, 3. Water-cooled flue gate, 4. Ash drop port, 5. Settling chamber, 6. Gate, 7. Circular smoke hood, 8. Air sealing air duct, 9. Electric hoist. DETAILED DESCRIPTION
[0015] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:
[0016] Example: Figure 1As shown, a new type of water-cooled gate device for the flue outlet of a fixed anode furnace in the recycled copper industry includes a flue and a gate frame arranged in the flue. The gate frame is provided with a gate 6, and a water-cooled flue gate 3 is installed in the gate. An ash outlet 4 is provided at the bottom of the gate below the water-cooled flue gate, and the bottom of the ash outlet is connected to a settling chamber 5. The movable joint between the water-cooled flue gate and the gate frame is provided with an air-sealed air duct 8 and an annular smoke collection hood 7 from bottom to top. The air-sealed air duct includes a blower, a pipe and an air hood, and the annular smoke collection hood includes a smoke hood, a pipe, a bag dust collector and a fan. The blower blows air through the pipe and the air hood to the smoke leakage point of the gate, forming a gas seal to reduce smoke overflow; the small amount of smoke that overflows enters the annular dust collection system through the smoke hood, the pipe, the bag dust collector, the fan, etc., and is discharged after being treated to meet the standards. An ash dropout port is located at the bottom of the gate, and a settling chamber is located below. Dust and small amounts of coke that would otherwise settle on the gate plate are preferentially dropped into the settling chamber, mitigating the risk of dust accumulation affecting the gate opening and closing. This prevents the need to periodically clean the flue at high temperatures during normal furnace production to remove accumulated dust and coke.
[0017] The water-cooled flue gate uses forced circulation of softened water for cooling and consists of a high-level soft water tank, a circulation pump, valves, and piping. The calcium and magnesium ion hardness in the softened water is below 0.01 mmol / L, making it less susceptible to scaling at high temperatures. This significantly reduces the risk of gate burnout due to localized high temperatures caused by scaling within the gate.
[0018] The water-cooled flue gate is also equipped with a water temperature and pressure alarm device. This new device provides timely warnings in the event of valve misoperation or water shortage, reducing the risk of gate burnout due to water shortages.
[0019] The gate frame adopts steel internal insulation gate frame 2. The original water-cooled flue gate frame is changed from water-cooled to refractory material, which reduces the failure points of water-cooled easy damage and improves system stability.
[0020] The top of the water-cooled flue gate is connected to the lifting by an electric hoist 9. The flue adopts a brick flue 1.
[0021] The utility model adopts a structure in which a hole is opened at the bottom of the gate below the flue gate and a sedimentation chamber is added to solve the problem that the gate cannot be lowered or is stuck due to dust or coking at the gate; only the flue gate is water-cooled, and the softened water high-level water tank is forced to supply water for cooling through a special pump, which greatly reduces the probability of gate damage; the problem of smoke pollution is solved by adding an air sealing airway and a ring smoke collection hood at the joint between the gate and the gate frame.
[0022] The embodiment described above is only a preferred solution of the present invention and does not limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.
Claims
1. A novel water-cooled flue gate device for a fixed anode furnace outlet in the recycled copper industry, comprising a flue and a gate frame arranged in the flue, a gate channel arranged on the gate frame, and a water-cooled flue gate installed in the gate channel, characterized in that: An ash drop port is provided at the bottom of the gate below the water-cooled flue gate, and the bottom of the ash drop port is connected to a sedimentation chamber. An air-sealed air duct and an annular smoke collection hood are sequentially provided at the movable joint between the water-cooled flue gate and the gate frame from bottom to top. The air-sealed air duct includes a blower, a pipe and an air blowing hood, and the annular smoke collection hood includes a smoke collection hood, a pipe, a bag dust collector and a fan.
2. A novel water-cooled gate device for the flue outlet of a fixed anode furnace in the recycled copper industry according to claim 1, characterized in that: The water-cooled flue gate adopts softened water for forced circulation cooling and is composed of a high-position soft water tank, a circulation pump, valves and pipelines.
3. A novel water-cooled gate device for the flue outlet of a fixed anode furnace in the recycled copper industry according to claim 2, characterized in that: The water-cooled flue gate is also equipped with a water temperature and pressure alarm device.
4. The novel water-cooled gate device for the flue outlet of a fixed anode furnace in the recycled copper industry according to claim 1 is characterized in that: The gate frame is a steel internal insulation gate frame.
5. The novel water-cooled gate device for the flue outlet of a fixed anode furnace in the recycled copper industry according to claim 1 is characterized in that: The top of the water-cooled flue gate is connected and raised and lowered by an electric hoist.
6. The novel water-cooled gate device for the flue outlet of a fixed anode furnace in the recycled copper industry according to claim 1 is characterized in that: The flue is a brick flue.