CN219400189U - Waste catalyst recovery system - Google Patents
Waste catalyst recovery system Download PDFInfo
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- CN219400189U CN219400189U CN202223578849.6U CN202223578849U CN219400189U CN 219400189 U CN219400189 U CN 219400189U CN 202223578849 U CN202223578849 U CN 202223578849U CN 219400189 U CN219400189 U CN 219400189U
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- sodium bicarbonate
- bicarbonate solution
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Abstract
The waste catalyst recovery system comprises a heating furnace, wherein an exhaust pipe I is connected to the upper part of the heating furnace, the exhaust pipe I is connected with a waste heat recovery pipe through a connecting flange, the waste heat recovery pipe is arranged in a water tank, the waste heat recovery pipe is communicated with a reaction tank through a connecting pipe, sodium bicarbonate solution is arranged in the reaction tank, the position where the connecting pipe is communicated with the reaction tank is located above the liquid level of the sodium bicarbonate solution, a rotating shaft is arranged in the reaction tank and is driven to rotate by a motor, a plurality of round reaction plates are fixedly arranged on the rotating shaft at intervals, and air holes are uniformly formed in one end of each reaction plate; among the two adjacent reaction plates, one of them reaction plate sets up the one end setting of gas pocket in sodium bicarbonate solution's top, and another reaction plate sets up the one end setting of gas pocket in sodium bicarbonate solution, and the end of reaction box is provided with blast pipe II, and flange department is provided with filter equipment, can effectually get rid of the sulfur dioxide gas that the old and useless catalyst produced of dry recovery.
Description
Technical Field
The utility model belongs to the technical field of waste catalyst recovery, and particularly relates to a waste catalyst recovery system.
Background
The dry method for recovering the waste catalyst generally utilizes a heating furnace to heat and melt the waste catalyst, a reducing agent and a cosolvent together, so that metal components are reduced and melted into metal or alloy for recovery, the metal or alloy is used as alloy or alloy raw material, and the carrier and the cosolvent form slag for discharge. When recycling waste catalysts with low noble metal content, some metals such as iron are often added to be used as a trapping agent for co-smelting. When the waste catalyst is recovered by adopting a dry method, the gas discharged by the heating furnace contains sulfur dioxide. In removing sulfur dioxide from the gas discharged from the heating furnace, it is common to directly introduce the gas into sodium bicarbonate solution.
The method for removing sulfur dioxide in the gas discharged from the heating furnace has the following defects:
1. after the gas discharged from the heating furnace enters the sodium bicarbonate solution, the gas can be quickly and easily discharged from the sodium bicarbonate, the reaction time and the contact area of the gas and the sodium bicarbonate solution can not be ensured, and the effect of removing sulfur dioxide is poor.
2. The gas discharged from the heating furnace is directly connected into sodium bicarbonate solution, so that on one hand, the sodium bicarbonate solution is evaporated too quickly, and on the other hand, the heat in the gas is wasted.
This is a disadvantage of the prior art.
Disclosure of Invention
The utility model aims to provide a waste catalyst recovery system which can be used for better removing sulfur dioxide in the exhaust gas of a heating furnace on one hand and recovering heat in the exhaust gas of the heating furnace on the other hand so as to solve the problems in the background technology.
The technical scheme for solving the technical problems is as follows: the waste catalyst recovery system comprises a heating furnace, wherein the upper part of the heating furnace is connected with an exhaust pipe I, the exhaust pipe I is connected with a waste heat recovery pipe through a connecting flange, the waste heat recovery pipe is arranged in a water tank and is communicated with a reaction tank through a connecting pipe, sodium bicarbonate solution is arranged in the reaction tank, the communicating position of the connecting pipe and the reaction tank is positioned above the liquid level of the sodium bicarbonate solution, a rotating shaft is arranged in the reaction tank and is driven to rotate by a motor, a plurality of round reaction plates are fixedly arranged on the rotating shaft at intervals, and air holes are uniformly formed in one end of each reaction plate; in two adjacent reaction plates, one of them reaction plate sets up the one end setting of gas pocket in sodium bicarbonate solution's top, and another reaction plate sets up the one end setting of gas pocket in sodium bicarbonate solution, the end of reaction box is provided with blast pipe II, flange department is provided with filter equipment.
Preferably, the waste heat recovery pipe disc is arranged in the water tank.
Preferably, an exhaust fan is arranged on the connecting pipe.
Preferably, the filtering device is a dust sticking plate arranged at the joint of the connecting flange and the exhaust pipe I.
Preferably, the reaction box is of a barrel-shaped structure, and the outer end of the reaction plate is attached to the inner wall of the reaction box.
Preferably, the reaction plate is provided with at least four.
Preferably, a PH meter and a liquid level meter are arranged in the reaction box.
The beneficial effects of the utility model are as follows: 1. when the waste catalyst is recovered by the dry method, dust is filtered by gas released by the heating furnace through the filtering device in the melting and smelting process, then the gas enters the water tank through the waste heat recovery pipe to exchange heat with water in the water tank, the gas after the waste heat recovery enters the reaction tank and reacts with sodium bicarbonate solution in the reaction tank to remove sulfur dioxide in the gas, and then the gas is discharged through the exhaust pipe II, and the gas released by the heating furnace is dedusted through the filtering device, so that dust accumulation in the waste heat recovery pipe and the connecting pipe is effectively avoided, and the dust is effectively prevented from entering the reaction tank.
2. The gas passes through the reaction plates in the reaction box through the air holes and also reacts with sodium bicarbonate solution suspended on the reaction plates, so that the contact area between the gas and the sodium bicarbonate solution is increased, and sulfur dioxide in the gas can be removed well through the action of a plurality of reaction plates.
3. The waste heat recovery pipe disc is arranged in the water tank, so that heat exchange can be better performed with water in the water tank, and the waste heat recovery efficiency is improved.
4. The connecting pipe is provided with an exhaust fan, so that the flow speed and the flow pressure of gas can be controlled.
5. The reaction plate is attached to the reaction box, so that gas can be effectively prevented from slipping out from the gap between the reaction plate and the reaction box.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Wherein:
1. a heating furnace 2, an exhaust pipe I, 3, a connecting flange 4, a waste heat recovery pipe 5, a water tank 6 and a connecting pipe, 7, a reaction box, 8, a motor, 9, a reaction plate, 9.1, an air hole, 10, a rotating shaft, 11, an exhaust pipe II, 12 and an exhaust fan.
Detailed Description
Fig. 1 shows a waste catalyst recovery system according to an embodiment of the utility model, which comprises a heating furnace 1, wherein an exhaust pipe i 2 is connected to the upper part of the heating furnace 1, the exhaust pipe i 2 is connected with a waste heat recovery pipe 4 through a connecting flange 3, the waste heat recovery pipe 4 is arranged in a water tank 5 in a disc manner, the waste heat recovery pipe 4 is communicated with a reaction tank 7 through a connecting pipe 6, sodium bicarbonate solution is arranged in the reaction tank 7, the position where the connecting pipe 6 is communicated with the reaction tank 7 is positioned above the liquid level of the sodium bicarbonate solution, a rotating shaft 10 is arranged in the reaction tank 7, the rotating shaft 10 is driven to rotate by a motor 8, a plurality of round reaction plates 9 are fixedly arranged on the rotating shaft 8 at intervals, one end of each reaction plate 9 is uniformly provided with air holes 9.1, the reaction tank 7 is of a barrel-shaped structure, and the outer end of each reaction plate 9 is attached to the inner wall of the reaction tank 7; among the two adjacent reaction plates 9, one end of one reaction plate 9 provided with an air hole 9.1 is arranged above sodium bicarbonate solution, one end of the other reaction plate 9 provided with an air hole 9.1 is arranged in sodium bicarbonate solution, the tail end of the reaction box 7 is provided with an exhaust pipe II 11, the connecting flange 3 is provided with a filtering device, and the filtering device is a dust sticking plate arranged at the joint of the connecting flange 3 and the exhaust pipe I2.
An exhaust fan 12 is arranged on the connecting pipe 6.
The reaction plate 9 is provided with at least four.
The PH meter and the liquid level meter are arranged in the reaction box 7 and used for monitoring the PH value and the liquid level of the reaction box, and sodium bicarbonate solution can be added into the reaction box 7 through the exhaust pipe II 11.
When waste catalyst is recovered by a dry method, dust is filtered by gas released by the heating furnace 1 in the melting and smelting process through a filtering device, then the gas enters the water tank 5 through the waste heat recovery pipe 4 to exchange heat with water in the water tank 5, the heat of the gas is recovered, the gas after the waste heat recovery enters the reaction box 7 and reacts with sodium bicarbonate solution in the reaction box 7 to remove sulfur dioxide in the gas, and then the sulfur dioxide is discharged through the exhaust pipe II 11, the gas released by the heating furnace 1 is dedusted through the filtering device, dust accumulation in the waste heat recovery pipe 4 and the connecting pipe 6 is effectively avoided, and the dust is effectively prevented from entering the reaction box 7. The gas can pass through the reaction plate 9 through the air holes 9.1 in the reaction box 7 and also can react with sodium bicarbonate solution suspended on the reaction plate 9, so that the contact area between the gas and the sodium bicarbonate solution is effectively increased, and sulfur dioxide in the gas can be removed well through the functions of a plurality of reaction plates 9.
Claims (7)
1. A waste catalyst recovery system is characterized in that: the device comprises a heating furnace (1), wherein an exhaust pipe I (2) is connected to the upper part of the heating furnace (1), the exhaust pipe I (2) is connected with a waste heat recovery pipe (4) through a connecting flange (3), the waste heat recovery pipe (4) is arranged in a water tank (5), the waste heat recovery pipe (4) is communicated with a reaction tank (7) through a connecting pipe (6), sodium bicarbonate solution is arranged in the reaction tank (7), the communicating part of the connecting pipe (6) and the reaction tank (7) is positioned above the liquid level of the sodium bicarbonate solution, a rotating shaft (10) is arranged in the reaction tank (7), the rotating shaft (10) is driven to rotate by a motor (8), a plurality of circular reaction plates (9) are fixedly arranged on the rotating shaft (10) at intervals, and air holes (9.1) are uniformly formed in one ends of the reaction plates (9); in two adjacent reaction plates (9), one end that one reaction plate (9) set up gas pocket (9.1) sets up in sodium bicarbonate solution's top, and the one end that another reaction plate (9) set up gas pocket (9.1) sets up in sodium bicarbonate solution, the end of reaction box (7) is provided with blast pipe II (11), flange (3) department is provided with filter equipment.
2. The spent catalyst recovery system according to claim 1, wherein: the waste heat recovery pipe (4) is arranged in the water tank (5) in a coiled mode.
3. The spent catalyst recovery system according to claim 1, wherein: an exhaust fan (12) is arranged on the connecting pipe (6).
4. The spent catalyst recovery system according to claim 1, wherein: the filtering device is a dust sticking plate arranged at the joint of the connecting flange (3) and the exhaust pipe I (2).
5. The spent catalyst recovery system according to claim 1, wherein: the reaction box (7) is of a barrel-shaped structure, and the outer end of the reaction plate (9) is attached to the inner wall of the reaction box (7).
6. The spent catalyst recovery system according to claim 1, wherein: the reaction plate (9) is provided with at least four.
7. The spent catalyst recovery system according to claim 1, wherein: a PH meter and a liquid level meter are arranged in the reaction box (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223578849.6U CN219400189U (en) | 2022-12-31 | 2022-12-31 | Waste catalyst recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223578849.6U CN219400189U (en) | 2022-12-31 | 2022-12-31 | Waste catalyst recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219400189U true CN219400189U (en) | 2023-07-25 |
Family
ID=87231647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223578849.6U Active CN219400189U (en) | 2022-12-31 | 2022-12-31 | Waste catalyst recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219400189U (en) |
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2022
- 2022-12-31 CN CN202223578849.6U patent/CN219400189U/en active Active
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