CN214437953U - Multistage catalytic treatment device of waste gas for enamelling machine - Google Patents
Multistage catalytic treatment device of waste gas for enamelling machine Download PDFInfo
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- CN214437953U CN214437953U CN202023121757.6U CN202023121757U CN214437953U CN 214437953 U CN214437953 U CN 214437953U CN 202023121757 U CN202023121757 U CN 202023121757U CN 214437953 U CN214437953 U CN 214437953U
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Abstract
The utility model discloses a multistage catalytic treatment device of waste gas for enamelling machine, including enamelling furnace body (1), the external connection of enamelling furnace body (1) has circulation tuber pipe (2), is equipped with catalytic unit (3) in circulation tuber pipe (2), and the tip of catalytic unit (3) is connected with waste discharge pipe (4) and return air duct (5) respectively, end connection circulation tuber pipe (2) of return air duct (5), the outside of catalytic unit (3) is equipped with heat exchange tube (6), and the one end of heat exchange tube (6) is equipped with hot-blast import (7) of connecting enamelling furnace body (1). The utility model has the characteristics of heat utilization rate is high, the accuse temperature is effectual.
Description
Technical Field
The utility model relates to an exhaust treatment device for the enameling machine, especially a multistage catalytic treatment device of waste gas for enameling machine.
Background
Because the paint film on the surface of the enameled wire can evaporate the paint solvent in the drying process, harmful gases such as benzene substances are generated, a waste gas treatment device is required to be arranged in the enameled furnace, and the waste gas in the enameled furnace is discharged to the outside after harmless treatment. The prior waste gas treatment device generally comprises a circulating air pipe connected with an enamelling oven, a catalytic device is arranged in the circulating air pipe, part of waste gas treated by the catalytic device is directly discharged through a waste discharge pipe, and part of waste gas flows back to the circulating air pipe again, so that the waste gas is recycled. However, the waste gas can generate a large amount of heat energy after being combusted and catalyzed by the catalytic device, so that the waste of the heat energy can be caused after the waste gas is directly discharged, and the energy-saving effect is poor. On the other hand, in order to avoid the continuous rise of the temperature in the furnace, the conventional circulating air pipe can be connected with a supplementary fan outside the air inlets at the two ends of the furnace body, external cold air and the circulating air pipe are supplied together through the supplementary fan, and the temperature control effect is achieved through the mutual mixing of the cold air and the hot air. However, the furnace body is affected by two types of air inlets at the air inlet position in such a way, so that the temperature at the position is unstable, and the temperature control effect on the furnace body is reduced. Therefore, the waste gas treatment device of the existing enamelling furnace has the problems of low heat energy utilization rate and poor temperature control effect.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a waste gas multi-stage catalytic treatment device for enamelling machine. It has the characteristics of high heat energy utilization rate and good temperature control effect.
The technical scheme of the utility model: multistage catalytic treatment device of waste gas for enamelling machine, including the enamelling furnace body, the external connection of enamelling furnace body has the circulation tuber pipe, is equipped with catalytic unit in the circulation tuber pipe, and catalytic unit's tip is connected with waste discharge pipe and return air duct respectively, and the end connection circulation tuber pipe of return air duct, catalytic unit's outside is equipped with the heat exchange tube, and the one end of heat exchange tube is equipped with the hot-blast import of connecting the enamelling furnace body.
In the multistage catalytic treatment device for waste gas for the enamelling machine, the two ends of the circulating air pipe are respectively provided with the circulating air inlet and the circulating air outlet, the circulating air inlet is connected with the return air pipe, and the circulating air outlet is connected with the catalytic device.
In the multi-stage catalytic treatment device for waste gas of the enamelling machine, the temperature sensors are arranged in the enamelling furnace body at the inner sides of the hot air inlet, the circulating air inlet and the circulating air outlet.
In the multistage catalytic treatment device for waste gas for the enamelling machine, a primary catalytic chamber and a secondary catalytic chamber are sequentially arranged in the catalytic device, and ceramic carrier catalysts are respectively arranged in the primary catalytic chamber and the secondary catalytic chamber; the end part of the waste discharge pipe is provided with a three-stage catalysis chamber, and a low-temperature combustion ceramic carrier catalyst, a low-temperature combustion metal catalyst and an active carbon adsorption device are respectively arranged in the three-stage catalysis chamber.
In the multistage catalytic treatment device for waste gas for the enamelling machine, the side part of the return air pipe is connected with the cold air inlet.
In the multistage catalytic treatment device for waste gas for the enamelling machine, a main circulating fan is arranged at the joint of the circulating air pipe and the return air pipe.
In the multistage catalytic treatment device for waste gas for the enamelling machine, the heat exchange tubes are arranged outside the circulating air pipe side by side along the length direction of the catalytic device, and the side wall parts of the heat exchange tubes and the circulating air pipe are overlapped.
In the multistage catalytic treatment device of waste gas for the enamelling machine, the end of the heat exchange tube is attached to the side wall of the waste discharge tube.
Compared with the prior art, the heat exchange tube arranged outside the catalytic device is matched with the hot air inlet, so that the waste gas in the catalytic device can be subjected to heat exchange at the heat exchange tube when external air enters, the utilization of heat energy in the discharged waste gas is realized, and the heat energy utilization rate of the catalytic device is improved; through the matching of the return air pipe and the cold air inlet, the outside air and the high-temperature waste gas treated by the catalytic device can be mixed and then enter the circulating air pipe, so that the temperature stability at the circulating air inlet is effectively improved, and the temperature control difficulty of the utility model is reduced; the other end of the enamelled furnace body is supplied with air through the heat exchange tube, so that the heat exchange quantity of the supplied air can be changed by adjusting the air speed, the temperature control effect is further realized, and the temperature control effect of the utility model is further improved; through one-level catalysis room, second grade catalysis room and tertiary catalysis room, then can carry out the cubic catalysis before the discharge to the waste gas in the furnace body, and then effectively improve the catalytic effect to waste gas, improve the utility model discloses an environmental protection nature. Therefore, the utility model has the characteristics of heat utilization rate is high, the temperature control is effectual.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
The labels in the figures are: 1-an enamelled furnace body, 2-a circulating air pipe, 3-a catalytic device, 4-a waste discharge pipe, 5-a return air pipe, 6-a heat exchange pipe, 7-a hot air inlet, 8-a temperature sensor, 9-a three-stage catalytic chamber, 10-a cold air inlet, 11-a main circulating fan, 201-a circulating air inlet and 202-a circulating air outlet.
Detailed Description
The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.
Examples are given. Multistage catalytic treatment device of waste gas for enamelling machine constitutes as shown in figure 1, including enamelling furnace body 1, the external connection of enamelling furnace body 1 has circulation tuber pipe 2, is equipped with catalytic unit 3 in the circulation tuber pipe 2, and catalytic unit 3's tip is connected with respectively and arranges useless pipe 4 and return air duct 5, and return air duct 5's end connection circulation tuber pipe 2, catalytic unit 3's outside is equipped with heat exchange tube 6, and the one end of heat exchange tube 6 is equipped with hot-blast import 7 of connecting enamelling furnace body 1, and the other end of heat exchange tube 6 is connected with the supplementary fan.
And two ends of the circulating air pipe 2 are respectively provided with a circulating air inlet 201 and a circulating air outlet 202, the circulating air inlet 201 is connected with the return air pipe 5, and the circulating air outlet 202 is connected with the catalytic device 3.
And temperature sensors 8 are arranged in the enamelled furnace body 1 at the inner sides of the hot air inlet 7, the circulating air inlet 201 and the circulating air outlet 202.
A primary catalytic chamber and a secondary catalytic chamber are sequentially arranged in the catalytic device 3, and ceramic carrier catalysts are arranged in the primary catalytic chamber and the secondary catalytic chamber; the end part of the waste discharge pipe 4 is provided with a three-stage catalysis chamber 9, and a low-temperature combustion ceramic carrier catalyst, a low-temperature combustion metal catalyst and an active carbon adsorption device are respectively arranged in the three-stage catalysis chamber 9.
The lateral part of the return air pipe 5 is connected with a cold air inlet 10, and the end part of the cold air inlet 10 is connected with a supplementary fan.
And a main circulating fan 11 is arranged at the joint of the circulating air pipe 2 and the return air pipe 5.
The heat exchange tubes 6 are arranged on the outer side of the circulating air pipe 2 side by side along the length direction of the catalytic device 3, and the side wall parts of the heat exchange tubes 6 and the circulating air pipe 2 are overlapped.
The end part of the heat exchange tube 6 is mutually attached to the side wall of the waste discharge tube 4.
The utility model discloses a theory of operation: the utility model discloses when using, waste gas in the furnace body is carried to catalytic unit 3 in through circulated air export 202, carries out catalytic decomposition to waste gas by one-level catalysis room and second grade catalysis room in proper order. The decomposed waste gas part is conveyed to the three-stage catalysis chamber 9 through the waste discharge pipe 4, and is discharged outside after being treated by the three-stage catalysis chamber 9 for three times, so that the waste gas is completely treated. The other part of the waste gas is mixed with the external air entering from the cold air inlet 10 through the return air pipe 5 and then enters the circulating air pipe 2 again, and enters the furnace body through the circulating air inlet 201, so that the circulating treatment of the air is realized. Meanwhile, external air enters from the heat exchange tube 6 under the driving of the fan and exchanges heat with high-temperature waste gas in the catalytic device 3 in the flowing process along the heat exchange tube 6, so that the heat energy of the waste gas is recovered. The air after heat exchange enters the enamelled furnace body 1 through the hot air inlet 7, and then is matched with the circulating air inlet 201 to realize air inlet from the front end and the rear end of the enamelled furnace body 1. Through the utility model discloses an optimize, can effectively improve the air temperature degree of consistency of air in hot-blast import 7 and circulating wind import 201 department to the convenient accuse temperature to the air inlet position, thereby improve the utility model discloses a accuse temperature effect.
Claims (8)
1. Multistage catalytic treatment device of waste gas for enamelling machine, its characterized in that: including enamelled furnace body (1), the external connection of enamelled furnace body (1) has circulation tuber pipe (2), is equipped with catalytic unit (3) in circulation tuber pipe (2), and the tip of catalytic unit (3) is connected with respectively arranges useless pipe (4) and return air duct (5), and the end connection circulation tuber pipe (2) of return air duct (5), the outside of catalytic unit (3) is equipped with heat exchange tube (6), and the one end of heat exchange tube (6) is equipped with hot-blast import (7) of connecting enamelled furnace body (1).
2. The exhaust gas multistage catalytic treatment device for the enamelling machine according to claim 1, characterized in that: and two ends of the circulating air pipe (2) are respectively provided with a circulating air inlet (201) and a circulating air outlet (202), the circulating air inlet (201) is connected with the return air pipe (5), and the circulating air outlet (202) is connected with the catalytic device (3).
3. The exhaust gas multistage catalytic treatment device for the enamelling machine according to claim 2, characterized in that: and temperature sensors (8) are arranged in the enamelled furnace body (1) at the inner sides of the hot air inlet (7), the circulating air inlet (201) and the circulating air outlet (202).
4. The exhaust gas multistage catalytic treatment device for the enamelling machine according to claim 1, characterized in that: a primary catalytic chamber and a secondary catalytic chamber are sequentially arranged in the catalytic device (3), and ceramic carrier catalysts are arranged in the primary catalytic chamber and the secondary catalytic chamber; the end part of the waste discharge pipe (4) is provided with a three-stage catalysis chamber (9), and a low-temperature combustion ceramic carrier catalyst, a low-temperature combustion metal catalyst and an active carbon adsorption device are respectively arranged in the three-stage catalysis chamber (9).
5. The exhaust gas multistage catalytic treatment device for the enamelling machine according to claim 1, characterized in that: and the side part of the air return pipe (5) is connected with a cold air inlet (10).
6. The exhaust gas multistage catalytic treatment device for the enamelling machine according to claim 1, characterized in that: and a main circulating fan (11) is arranged at the joint of the circulating air pipe (2) and the return air pipe (5).
7. The exhaust gas multistage catalytic treatment device for the enamelling machine according to claim 1, characterized in that: the heat exchange tubes (6) are arranged on the outer side of the circulating air pipe (2) side by side along the length direction of the catalytic device (3), and the side wall parts of the heat exchange tubes (6) and the circulating air pipe (2) are overlapped.
8. The exhaust gas multistage catalytic treatment device for the enamelling machine according to claim 7, characterized in that: the end part of the heat exchange tube (6) is attached to the side wall of the waste discharge tube (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023121757.6U CN214437953U (en) | 2020-12-22 | 2020-12-22 | Multistage catalytic treatment device of waste gas for enamelling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023121757.6U CN214437953U (en) | 2020-12-22 | 2020-12-22 | Multistage catalytic treatment device of waste gas for enamelling machine |
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| Publication Number | Publication Date |
|---|---|
| CN214437953U true CN214437953U (en) | 2021-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023121757.6U Active CN214437953U (en) | 2020-12-22 | 2020-12-22 | Multistage catalytic treatment device of waste gas for enamelling machine |
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| CN (1) | CN214437953U (en) |
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2020
- 2020-12-22 CN CN202023121757.6U patent/CN214437953U/en active Active
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