CN219014337U - Secondary combustion facility for smoke dust discharged by smelting regenerated copper - Google Patents

Abstract

The secondary combustion facility for secondary copper smelting and discharging smoke dust belongs to the field of renewable resource processing facilities, a smoke exhausting centrifugal fan and a J-shaped connecting pipe are connected with the bottom of a hollow cylindrical combustion chamber, a J-shaped air supply pipe is horizontally arranged in the combustion chamber, two sides of an exhaust port above the right side of the air supply pipe are respectively provided with a hollow annular combustion disc through long strip brackets, the left side of the air supply pipe penetrates through the side wall of the combustion chamber to extend to the outside of the combustion chamber and is connected with an air outlet of an oxygenation centrifugal fan, an air supply pipe connected with a natural air valve is arranged at the bottom of the combustion disc, smoke in a smelting furnace is fed into the combustion chamber through the smoke exhausting centrifugal fan, a flame is sprayed out of the combustion disc in the combustion chamber to secondarily combust the smoke entering the combustion chamber, and fresh air is sprayed into the center of the combustion disc through the exhaust port by the oxygenation centrifugal fan in the combustion process to support combustion of the flame of natural gas.

Description

Secondary combustion facility for smoke dust discharged by smelting regenerated copper

Technical Field

The utility model discloses a secondary combustion facility for smoke dust discharged by reclaimed copper smelting, and belongs to the field of renewable resource processing facilities.

Background

The copper smelted by adopting copper materials such as waste circuit boards, waste wires and the like is called reclaimed copper. When smelting regenerated copper, the existing enterprises need to break up waste circuit boards and waste wires, and then put the waste circuit boards and the waste wires into a smelting furnace to burn at high temperature to remove impurities, so that the waste circuit boards and the waste wires become primary copper. However, when the waste circuit board and the waste wire are burned in the smelting furnace, as the waste circuit board and the waste wire contain impurities such as resin, plastic and oil stain, the flue gas discharged after combustion contains more dust which is not completely burned, and the flue gas is directly discharged into the air to pollute the air. The existing solution is to add a fire-spraying pipe in the flue dust discharge pipeline to perform secondary combustion on the discharged unburned flue dust. However, the flue gas discharged into the flue gas pipeline is combusted once in the smelting furnace, oxygen contained in the flue gas is depleted, when the fire tube is used for secondary combustion of the flue gas, the oxygen is lacking in the flue gas exhaust pipe, natural gas flame sprayed out of the fire tube cannot be combusted to the maximum extent, so that the natural gas is wasted, and the flame sprayed out of the fire tube is cylindrical and cannot be dispersed, so that the secondary combustion of the flue gas in the flue gas exhaust pipe is incomplete.

Disclosure of Invention

The secondary combustion facility for the smoke dust discharged by the regenerated copper smelting solves the above difficulties, and provides a facility for assisting multi-point combustion by adding fresh air to a circular combustion disc and a centrifugal fan.

The technical proposal of the utility model is that the secondary combustion facility for secondary combustion of smoke dust discharged by secondary copper smelting comprises a smoke discharging pipe, wherein an inlet of the smoke discharging pipe is connected with a smoke outlet of a smelting furnace, an outlet of the smoke discharging pipe is connected with an inlet of a smoke discharging centrifugal fan, an outlet of the smoke discharging centrifugal fan is connected with an inlet of a connecting pipe, a first high-speed motor is arranged in front of the smoke discharging centrifugal fan, an outlet of the connecting pipe is connected with the bottom of a combustion chamber, a flue connected with a neutralization pond is arranged at the top of the combustion chamber, an observation window is arranged in front of the combustion chamber, an air supply pipe is arranged in the combustion chamber, a combustion disc is arranged on an exhaust outlet of the air supply pipe, an oxygen increasing centrifugal fan is arranged on an inlet of the air supply pipe, a second high-speed motor is arranged in front of the oxygen increasing centrifugal fan, the side-mounted igniter of the combustion disk, the air supply pipe is arranged at the bottom of the combustion disk, the inlet of the air supply pipe is connected with the valve of the natural gas pipeline, the control box is arranged on the power distribution cabinet of the assembly line, the switch button is arranged in front of the control box, the power supply, the first contactor, the second contactor and the ignition coil are arranged in the control box, the power supply is connected with the switch button, the first contactor, the second contactor and the ignition coil through power lines respectively, the switch button is connected with the first contactor, the second contactor and the ignition coil through power lines respectively, the first contactor is connected with the second high-speed motor through the power lines, the second contactor is connected with the first high-speed motor through the power lines, and the ignition coil is connected with the igniter through the high-voltage lines.

Further, the middle part of combustion chamber is hollow cylindrical, upper and lower are conical, upper and lower all set up circular opening, the blast pipe of the below horizontal installation of combustion chamber left side inner wall is J type, the combustion disk of the circular gas vent of blast pipe right top's both sides through the support mounting of rectangular shape respectively is hollow ring shape, the higher authority of combustion disk has evenly set up circular reticular exhaust hole, the igniter of combustion disk side-mounting is L type, the high-pressure line of installation is the high temperature resistant wire of outside parcel asbestos insulating layer between igniter and the ignition coil, the outside that the lateral wall of blast pipe was passed the combustion chamber extends to the combustion chamber is connected with oxygenation centrifugal fan's gas outlet.

The beneficial effects are that: the secondary combustion facility for secondary combustion of the secondary copper smelting exhaust smoke dust is connected with the bottom of a hollow cylindrical combustion chamber through a smoke exhausting centrifugal fan and a J-shaped connecting pipe, a J-shaped air supply pipe is horizontally arranged in the combustion chamber, two sides of an exhaust port above the right side of the air supply pipe are respectively provided with a hollow annular combustion disc through long strip brackets, the left side of the air supply pipe extends to the outside of the combustion chamber through the side wall of the combustion chamber and is connected with an air outlet of an oxygenation centrifugal fan, the side surface of the combustion disc is provided with an L-shaped igniter, and the bottom of the combustion disc is provided with an air supply pipe connected with a natural air valve;

the secondary combustion facility for the smoke dust discharged by the secondary copper smelting sends the smoke gas in the smelting furnace into the combustion chamber through the smoke discharging centrifugal fan, the annular mist natural gas is sprayed out of the combustion disc in the combustion chamber, the flame after the natural gas burns carries out secondary combustion on the smoke gas entering the combustion chamber, and fresh air is sprayed into the center of the combustion disc through the air outlet by the oxygen increasing centrifugal fan in the combustion process to carry out combustion supporting on the flame burning the natural gas through the air outlet, so that the smoke dust in the smoke gas burns more thoroughly.

Drawings

FIG. 1 is a schematic diagram of a secondary combustion facility for secondary copper smelting and smoke dust emission;

FIG. 2 is a schematic view of the structure of the air supply pipe, the combustion disk, the air outlet, the air supply pipe, the igniter and the high-voltage wire;

FIG. 3 is a schematic diagram of the connection of a first high-speed motor, a second high-speed motor, an igniter, a high-voltage wire, a control box, a power supply, a switch button, a first contactor, a second contactor, an ignition coil and a power wire;

in the figure, 1, a smoke exhaust pipe; 2. a smoke exhausting centrifugal fan; 3. a first high-speed motor (AC 380V/3-5 kw); 4. a connecting pipe; 5. a combustion chamber; 6. an observation window; 7. an air supply pipe; 8. a combustion plate; 9. oxygenation centrifugal fan; 10. a second high-speed motor (AC 380V/0.5 kw); 11. an exhaust port; 12. a gas supply pipe (2 kpa); 13. igniter (AC 1000V/0.1A); 14. high voltage line (AC 1000V/0.1); 15. a control box; 16. a power supply (AC 380V/30A); 17. a switch button (AC 220V/5A); 18. a contactor number one (AC 380V/5A); 19. a contactor II (AC 380V/20A); 20. ignition coil (AC 220V/1000V/0.01A); 21. and a power supply line.

Detailed Description

The shape and structure of the present utility model will now be described in detail with reference to the accompanying drawings and reference numerals:

referring to fig. 1-3, the secondary combustion facility for secondary copper smelting exhaust smoke comprises a smoke exhaust pipe 1, wherein the smoke exhaust pipe 1 is used for guiding smoke in a smelting furnace into a smoke exhaust centrifugal fan 2, an inlet of the smoke exhaust pipe 1 is connected with a smoke exhaust port of the smelting furnace, an outlet of the smoke exhaust pipe 1 is connected with an inlet of the smoke exhaust centrifugal fan 2, the smoke exhaust centrifugal fan 2 is used for sucking the smoke in the smoke exhaust pipe 1 and then sending the smoke into a connecting pipe 4, an outlet of the smoke exhaust centrifugal fan 2 is connected with an inlet of the connecting pipe 4, a first high-speed motor 3 is arranged in front of the smoke exhaust centrifugal fan 2 and used for guiding the smoke exhausted by the smoke exhaust centrifugal fan 2 into a combustion chamber 5, the first high-speed motor 3 is used for driving a centrifugal fan in the smoke exhaust centrifugal fan 2 to rotate, an outlet of the connecting pipe 4 is connected with the bottom of the combustion chamber 5 and the combustion chamber 5 is used for burning the smoke exhausted by the smelting furnace, the top of the combustion chamber 5 is provided with a flue connected with a neutralization pond, the front of the combustion chamber 5 is provided with an observation window 6, the observation window 6 is used for observing the combustion condition in the combustion chamber 5, the combustion chamber 5 is internally provided with an air supply pipe 7, the air supply pipe 7 is used for guiding fresh air discharged by an oxygenation centrifugal fan 9 into an exhaust port 11, the exhaust port 11 of the air supply pipe 7 is provided with a combustion disk 8, the exhaust port 11 is used for discharging fresh air into the center of the combustion disk 8, the combustion disk 8 is used for uniformly spraying natural gas, the inlet of the air supply pipe 7 is provided with the oxygenation centrifugal fan 9, the oxygenation centrifugal fan 9 is used for conveying fresh air to the center of the combustion disk 8, and the front of the oxygenation centrifugal fan 9 is provided with a No. two high-speed motor 10, the second high-speed motor 10 is used for driving the centrifugal fan inside the oxygenation centrifugal fan 9 to rotate, the igniter 13 is arranged on the side face of the combustion disc 8, the igniter 13 is used for igniting natural gas sprayed out of the combustion disc 8, the air supply pipe 12 is arranged at the bottom of the combustion disc 8, the air supply pipe 12 is used for guiding natural gas discharged from the natural gas valve into the combustion disc 8, an inlet of the air supply pipe 12 is connected with a valve of a natural gas pipeline, the control box 15 is arranged on a power distribution cabinet of a production line, the switch button 17 is arranged in front of the control box 15, the power supply 16, the first contactor 18, the second contactor 19 and the ignition coil 20 are arranged in the control box 15, the power supply 16 is connected with the switch button 17, the first contactor 18, the second contactor 19 and the ignition coil 20 through power lines 21, the first contactor 18 is connected with the second high-speed motor 10 through the power lines 21, the second contactor 19 is connected with the first high-speed ignition coil 3 through the power lines 21, and the high-speed igniter 13 is connected with the high-speed igniter 20 through the high-speed motor 13.

Referring to fig. 1 and 2, the middle part of the combustion chamber 5 is hollow cylindrical, the upper part and the lower part are conical, circular openings are formed in the upper part and the lower part, the air supply pipe 7 horizontally installed below the inner wall of the left side of the combustion chamber 5 is in a J shape, the combustion disc 8 respectively installed through the long strip-shaped support at the two sides of the circular exhaust port 11 above the right side of the air supply pipe 7 is in a hollow circular shape, circular net-shaped exhaust holes are uniformly formed in the upper surface of the combustion disc 8, the igniter 13 installed on the side surface of the combustion disc 8 is in an L shape, the high-voltage wire 14 installed between the igniter 13 and the ignition coil 20 is a high-temperature-resistant wire for wrapping an asbestos heat insulation layer outside, the left side of the air supply pipe 7 penetrates through the side wall of the combustion chamber 5 to extend to the outside of the combustion chamber 5 and be connected with the air outlet of the oxygenation centrifugal fan 9, and the shapes and the installation positions of the combustion chamber 5, the air supply pipe 7, the combustion disc 8, the igniter 13, the high-voltage wire 14 and the ignition coil 20.

Now, in combination with the above specific description, after the smelting furnace is opened, the power supply 16 is turned on by the worker, the first high-speed motor 3 and the second high-speed motor 10 are turned on by the switch button 17, the first high-speed motor 3 drives the centrifugal fan inside the smoke exhausting centrifugal fan 2 to rotate at a high speed, the smoke exhausted by the smelting furnace is sucked through the smoke exhausting pipe 1 and then is pressed into the connecting pipe 4, the smoke is sprayed into the combustion chamber 5 through the connecting pipe 4, at this time, the worker opens the natural gas valve, natural gas is blown into the combustion disc 8 through the gas supply pipe 12 and then is sprayed out through the exhaust hole above the combustion disc 8, at the same time, the worker controls the ignition coil 20 through the switch button 17 to provide high-voltage pulse current for the igniter 13, the igniter 13 sends electric sparks to ignite the natural gas to the combustion disc 8, the natural gas flame forms a cylinder to burn the smoke entering the combustion chamber 5, at the same time, the second high-speed motor 10 drives the centrifugal fan inside the centrifugal fan to rotate at a high speed, fresh air is sent into the combustion chamber 5 through the blast pipe 7 and the exhaust port 11 to the center of the combustion-supporting secondary air, the natural gas is blown into the combustion chamber through the combustion air through the air supply pipe 12, the combustion-supporting device is blown out of the exhaust hole above the combustion disc 8, and the combustion gas is completely burned in the flue gas is burned in the flue gas and the flue gas is completely burned through the top of the flue gas and the flue gas is burned.

Claims (2)

1. The secondary combustion facility for the secondary combustion of the smoke dust discharged by the secondary copper smelting comprises a smoke discharge pipe, and is characterized in that an inlet of the smoke discharge pipe is connected with a smoke outlet of a smelting furnace, an outlet of the smoke discharge pipe is connected with an inlet of a smoke discharge centrifugal fan, an outlet of the smoke discharge centrifugal fan is connected with an inlet of a connecting pipe, a first high-speed motor is arranged in front of the smoke discharge centrifugal fan, an outlet of the connecting pipe is connected with the bottom of a combustion chamber, a flue connected with a neutralization pond is arranged at the top of the combustion chamber, an observation window is arranged in front of the combustion chamber, an air supply pipe is arranged in the combustion chamber, a combustion disc is arranged on an exhaust outlet of the air supply pipe, an oxygenation centrifugal fan is arranged on an inlet of the air supply pipe, a second high-speed motor is arranged in front of the oxygenation centrifugal fan, the side-mounted igniter of the combustion disk, the air supply pipe is arranged at the bottom of the combustion disk, the inlet of the air supply pipe is connected with a valve of a natural gas pipeline, the control box is arranged on a power distribution cabinet of the assembly line, the front of the control box is provided with a switch button, a power supply, a first contactor, a second contactor and an ignition coil, the power supply is connected with the switch button, the first contactor, the second contactor and the ignition coil through power lines respectively, the switch button is connected with the first contactor, the second contactor and the ignition coil through power lines respectively, the first contactor is connected with the second high-speed motor through the power lines, the second contactor is connected with the first high-speed motor through the power lines, and the ignition coil is connected with the igniter through the high-voltage lines.

2. The secondary combustion facility for smelting and discharging smoke dust by regenerated copper according to claim 1, wherein the middle part of the combustion chamber is hollow cylindrical, the upper part and the lower part of the combustion chamber are conical, circular openings are formed in the upper part and the lower part, an air supply pipe horizontally arranged below the inner wall on the left side of the combustion chamber is J-shaped, combustion discs respectively arranged on two sides of a circular exhaust port on the right side of the air supply pipe through long strip-shaped brackets are hollow circular rings, circular net-shaped exhaust holes are uniformly formed in the upper surface of the combustion discs, an igniter arranged on the side surface of the combustion discs is L-shaped, high-temperature-resistant wires for wrapping asbestos heat insulation layers are arranged outside high-pressure wires arranged between the igniter and the ignition coil, and the left side of the air supply pipe penetrates through the side wall of the combustion chamber to extend to the outside of the combustion chamber and be connected with an air outlet of an oxygenation centrifugal fan.

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