Emission reduction furnace door for electrolytic aluminum
By designing the emission reduction furnace door for electrolytic aluminum, the outer frame door and inner frame door are used to distinguish the operating degree, and combining hollow double-layer aluminum plate, iron sheet material and magnetic field force to automatically attract and close the smoke caused by the opening of the furnace door in electrolytic aluminum production is solved. The problem of dissipation has achieved the effect of reducing heat dissipation and flue gas dissipation, improving the working environment and improving work efficiency.
Patent Information
- Application Number
- CN202420224687.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-30
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-01-30
AI Technical Summary
During the electrolytic aluminum production process, flue gas escapes when the furnace door is opened, resulting in pollution. The existing technology relies on limiting operating time and artificial control, and there are problems of management defects and high labor.
Design an electrolytic aluminum emission reduction furnace door. By setting the outer frame door and the inner frame door, the working degree is distinguished and the opening area of the furnace door is reduced. It uses hollow double-layer aluminum plate and iron material, and uses magnetic field force to automatically attract and close it, and combines the door with the and sealing cloth to reduce flue gas dissipation and negative pressure loss.
It effectively reduces the heat dissipation of the electrolytic cell and the flue gas dissipation, improves the working environment, reduces manual management costs, increases work efficiency, and achieves the purpose of energy conservation and emission reduction.
Smart Images
Figure CN222434650U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a furnace door, in particular to an emission reduction furnace door for electrolytic aluminum, belonging to the technical field of electrolytic aluminum. Background Art
[0002] In the process of electrolytic aluminum production, many small operations are usually required to adjust the condition of the electrolytic cell, investigate the condition inside the cell or perform salvage operations, etc. This requires opening the furnace door to perform various operations to adjust and operate the electrolytic cell; when the furnace door is opened, the flue gas generated by the electrolytic cell production will be destroyed along with the furnace door, and the negative pressure of the flue gas recovery system will fail after the negative pressure is connected to the atmosphere. Sulfur dioxide, sulfur monoxide and carbon dioxide, which are by-products of electrolytic production, will expand and dissipate outward with the high temperature of the electrolytic cell, forming a pollution phenomenon of flue gas discharge; and at present, aluminum plants in the industry basically use methods such as limiting operating time and strengthening human control to adjust small operations of electrolytic cells. There are some management defects themselves, which lead to long pollution time or large emissions, which not only increases the workload of on-site management, but also affects the efficiency of employees at work. Utility Model Content
[0003] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art and provide an emission reduction furnace door for electrolytic aluminum, which effectively distinguishes the working degree by arranging an outer frame door and an inner frame door, thereby reducing the heat dissipation of the electrolytic cell and the escape of smoke, and improving the working environment.
[0004] The technical solution adopted by the utility model to solve the technical problem is:
[0005] An emission reduction furnace door for electrolytic aluminum comprises an electrolytic cell door-shaped outer frame and a handle, wherein an outer frame door is hingedly connected to the interior of the electrolytic cell door-shaped outer frame, a rectangular through hole is dug in the middle and lower part of the outer frame door, and an inner frame door is hingedly connected at the rectangular through hole, a handle is arranged on the outside of the inner frame door, a door ledge is arranged between the electrolytic cell door-shaped outer frame and the outer frame door, and a handle is arranged on the outside of the door ledge.
[0006] There are two outer frame doors, which are centrally symmetrically arranged inside the electrolytic cell door-shaped outer frame. The outer sides of the outer frame doors are hinged to the electrolytic cell door-shaped outer frame through hinges.
[0007] The outer frame door is made of hollow double-layer aluminum plates.
[0008] There are two inner frame doors, both of which are made of aluminum plates. The left side of the inner frame door is hinged to the inner side of the outer frame door through a hinge, and the inner frame door and the outer frame door form a rectangular door panel structure.
[0009] The door sling is distributed in an L shape, the upper end of the door sling is hinged to the electrolytic cell door-shaped outer frame, and the lower end of the door sling covers two outer frame doors.
[0010] The door sill is made of iron plates.
[0011] The edge of the inner side surface of the outer frame door is provided with iron sheets.
[0012] The bottom of the outer frame door and the outer corner of the bottom are provided with an L-shaped polymer heat-resistant insulation layer.
[0013] A dust collecting cloth is arranged at the gap between the electrolytic cell door-shaped outer frame and the outer wall of the outer frame door.
[0014] The positive beneficial effects of the utility model are:
[0015] The utility model can effectively distinguish the degree of operation by digging a hole in the outer frame door and installing the inner frame door. When performing small operations such as aluminum tapping and carbon slag salvaging, only the inner frame door can be opened, which effectively reduces the heat dissipation of the electrolytic cell and the escape of smoke, and improves the working environment.
[0016] 2. The outer frame door of the utility model is made of hollow double-layer aluminum plate, which reduces the weight of the furnace door itself, reduces the influence of magnetic field force on the furnace door, reduces the labor intensity during use, and because of the selection of aluminum alloy material, it is convenient for future modification and installation and disassembly.
[0017] 3. The utility model utilizes the magnetic field force of the electrolytic cell by installing iron sheets on the inner side of the outer frame door. When not in operation, the furnace door can be adsorbed on the electrolytic cell door frame, reducing smoke emission and labor management costs. It is easy to use and simple to operate.
[0018] 4. The utility model effectively reduces the negative pressure loss of the electrolytic cell fume recovery system by installing door covers and sealing cloth, effectively reduces the fan load, reduces the auxiliary power consumption, achieves the purpose of energy saving and emission reduction, and is easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the structure of the utility model;
[0020] Figure 2 It is a structural schematic diagram of the door frame of the utility model;
[0021] Among them: 1-electrolytic cell door-type outer frame, 2-outer frame door, 3-inner frame door, 4-handle, 5-door span, 6-handle, 7-L-type polymer heat-resistant insulation layer, 8-dust collecting cloth. DETAILED DESCRIPTION
[0022] The utility model is further explained and illustrated below in conjunction with the accompanying drawings:
[0023] For example, see Figure 1-Figure 2A reduction furnace door for electrolytic aluminum comprises an electrolytic cell door-shaped outer frame 1 and a handle 4, an outer frame door 2 is hingedly connected to the inner part of the electrolytic cell door-shaped outer frame 1, a rectangular through hole is dug in the middle and lower part of the outer frame door 2, and an inner frame door 3 is hingedly connected at the rectangular through hole, a handle 4 is arranged on the outside of the inner frame door 3, a door ledge 5 is arranged between the electrolytic cell door-shaped outer frame 1 and the outer frame door 2, and a handle 6 is arranged on the outside of the door ledge 5.
[0024] There are two outer frame doors 2, which are centrally symmetrically arranged inside the electrolytic cell door-shaped outer frame 1. The outer sides of the outer frame doors 2 are hinged to the electrolytic cell door-shaped outer frame 1 through hinges.
[0025] The outer frame door 2 is made of hollow double-layer aluminum plates.
[0026] There are two inner frame doors 3, both of which are made of aluminum plates. The left side of the inner frame door 3 is hinged to the inner side of the outer frame door 2 through a hinge, and the inner frame door 3 and the outer frame door 2 form a rectangular door panel structure.
[0027] The door sling 5 is distributed in an L shape, and is hinged to the electrolytic cell door-shaped outer frame 1 at its upper end, and covers the two outer frame doors 2 at its lower end.
[0028] In the above description, the size of the door flap is such that the staff can open the outer frame door by reversing the door flap upward.
[0029] The door sill 5 is made of iron plate.
[0030] Iron sheets are arranged at the edges of the inner sides of the outer frame door 2 .
[0031] An L-shaped polymer heat-resistant insulating layer 7 is provided at the bottom of the outer frame door 2 and at the outer corner of the bottom.
[0032] A dust collecting cloth 8 is provided at the gap between the electrolytic cell door-shaped outer frame 1 and the outer wall of the outer frame door 2 .
[0033] In the above description, there are two outer frame doors and two inner frame doors, a rectangular through hole is dug in the middle and lower part of each outer frame door, and the inner frame door is installed in the rectangular through hole, and each outer frame door and inner frame door form a rectangular panel, and the rectangular panel is half of the internal space of the electrolytic cell door-type outer frame 1.
[0034] In the above description, the entire inner frame door can be opened during small operations. Due to the function of the inner hinge of the inner frame door, it can be opened 0°~170°, which increases the operating area and improves the operating flexibility.
[0035] In the above description, the outer frame door is made of hollow double-layer aluminum plates. The hollow double-layer door panels can effectively reduce the heat dissipation in the electrolytic cell, while also reducing the outer contact temperature to avoid overheating of the furnace door and causing burns to personnel. In addition, due to the quality of the door panels, they are easy to install and cut, and can also avoid the magnetic field force generated by the magnetic field of the electrolytic cell.
[0036] In the above description, at the center line boundary of the outer frame door, two iron sheets are connected at the center line edges of the two outer frame doors, and after drilling holes evenly with a 5mm drill bit, 5mm rivets are used to fix the two iron sheets to the inside of the inner and outer frame doors, and then the connecting iron sheets are cut along the connection between the inner frame and the outer frame door. Under the action of the electrolytic magnetic field force, the iron sheets will automatically attract and close as they approach the electrolytic cell, reducing labor intensity.
[0037] In the above description, two door handles are installed 20 cm below the high point of the center of the inner frame door to facilitate opening and closing the furnace door during operation, which not only improves work efficiency but also reduces accidents such as burns caused by direct contact between personnel and the furnace door.
[0038] In the above description, two iron sheets are welded into an L-shaped door frame, and after a door axis is welded to the top of the connection between the electrolytic cell door frame and the outer frame door, the L-shaped door frame is installed on the door axis. This avoids the outer frame door being always in a closed state when no operation is performed, and does not affect the negative pressure in the cell. The recovery through the flue recovery system reduces the heat dissipation and pollution emissions of the electrolytic cell, and increases the richness and selectivity of the operation time.
[0039] In the above description, the gap produced after the furnace door is made is sealed with dust collecting cloth around the outer frame door connected to the outer frame of the electrolytic cell. A 5mm drill is used to drill holes evenly between the sealing cloth and the furnace door, and then fixed with 5mm rivets. This can effectively ensure the negative pressure of the flue gas recovery system in the cell, greatly reduce the heat dissipation and flue gas dissipation of the electrolytic cell, reduce environmental pollution, and effectively reduce the noise pollution caused by mechanical collision and friction, greatly improving the working environment.
[0040] In the above description, L-shaped polymer heat-resistant insulating materials are installed at the bottom of the outer frame furnace door near the electrolytic cell door column to avoid short circuit caused by contact with the electrolytic cell body when the furnace door is opened and closed, effectively preventing electric shock accidents.
[0041] The utility model can effectively distinguish the degree of operation by arranging the outer frame door and the inner frame door, reduce the opening area of the furnace door, thereby reducing the heat dissipation and smoke emission of the electrolytic cell, thereby achieving the effect of reducing labor management costs, increasing work efficiency, and improving the working environment. The utility model is easy to use and simple to operate.
Claims
1. An emission reduction furnace door for aluminum electrolysis, comprising an electrolytic cell door-shaped outer frame (1) and a handle (4), characterized in that: An outer frame door (2) is hingedly connected to the interior of the electrolytic cell door-shaped outer frame (1); a rectangular through hole is excavated in the middle and lower part of the outer frame door (2); an inner frame door (3) is hingedly connected at the rectangular through hole; a handle (4) is arranged on the outside of the inner frame door (3); a door ledge (5) is arranged between the electrolytic cell door-shaped outer frame (1) and the outer frame door (2); and a handle (6) is arranged on the outside of the door ledge (5).
2. The emission reduction furnace door for electrolytic aluminum according to claim 1, characterized in that: There are two outer frame doors (2), which are centrally symmetrically arranged inside the electrolytic cell door-shaped outer frame (1); the outer sides of the outer frame doors (2) are hingedly connected to the electrolytic cell door-shaped outer frame (1) via hinges.
3. The emission reduction furnace door for electrolytic aluminum according to claim 2, characterized in that: The outer frame door (2) is made of a hollow double-layer aluminum plate.
4. The emission reduction furnace door for electrolytic aluminum according to claim 1, characterized in that: There are two inner frame doors (3), both of which are made of aluminum plates. The left side of the inner frame door (3) is hinged to the inner side of the outer frame door (2) through a hinge, and the inner frame door (3) and the outer frame door (2) form a rectangular door panel structure.
5. The emission reduction furnace door for electrolytic aluminum according to claim 1, characterized in that: The door sling (5) is distributed in an L shape, the upper end of the door sling (5) is hinged to the electrolytic cell door-shaped outer frame (1), and the lower end of the door sling (5) covers the two outer frame doors (2).
6. The emission reduction furnace door for electrolytic aluminum according to claim 5, characterized in that: The door sill (5) is made of iron plate.
7. The emission reduction furnace door for electrolytic aluminum according to claim 1, characterized in that: An iron sheet is provided at the edge of the inner side surface of the outer frame door (2).
8. The emission reduction furnace door for electrolytic aluminum according to claim 1, characterized in that: An L-shaped polymer heat-resistant insulation layer (7) is provided at the bottom and the outer corner of the bottom of the outer frame door (2).
9. The emission reduction furnace door for electrolytic aluminum according to claim 1, characterized in that: A dust collecting cloth (8) is provided in the gap between the electrolytic cell door-shaped outer frame (1) and the outer wall of the outer frame door (2).