CN219300759U - Coating exhaust treatment system - Google Patents
Coating exhaust treatment system Download PDFInfo
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- CN219300759U CN219300759U CN202221406203.7U CN202221406203U CN219300759U CN 219300759 U CN219300759 U CN 219300759U CN 202221406203 U CN202221406203 U CN 202221406203U CN 219300759 U CN219300759 U CN 219300759U
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- rto
- heat exchanger
- coating machine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The utility model discloses a coating waste gas treatment system which comprises an RTO, a first heat exchanger and a coating machine oven, wherein the RTO is connected with a hot side inlet of the first heat exchanger, a cold side outlet of the first heat exchanger is connected with the coating machine oven, the RTO is used for burning waste gas generated by the coating machine oven, and heat generated by the RTO burning waste gas is used for heating the coating machine oven after being replaced by the first heat exchanger. The system directly sends high-temperature and high-concentration waste gas at the baking oven of the coating machine into the RTO (regenerative thermal incinerator) for combustion, and the concentration of the waste gas at the baking oven of the coating machine is high, so that when the concentration reaches a certain degree, the self-operation of the RTO can be maintained, and natural gas is not required to be consumed. The energy consumption of RTO is reduced, and heat generated by the RTO heats the baking oven of the coating machine after passing through the first heat exchanger, so that the energy generated by the RTO is fully utilized, and the energy is saved and the emission is reduced.
Description
Technical Field
The utility model relates to an exhaust gas treatment system, in particular to a coating exhaust gas treatment system.
Background
The coating machine is mainly used for the surface coating process production of films, papers and the like, and the machine is used for coating a layer of glue, paint or ink with specific functions on a coiled base material, drying and coiling the coiled base material. In the working process of the coating machine, volatile organic waste gas such as methanol and the like can be generated, and the volatile organic waste gas is directly discharged to pollute the atmospheric environment. The coating exhaust gas mainly comes from the head of the coating machine, the tail of the coating machine and the oven of the coating machine. The existing waste gas treatment mainly directly sends the three waste gases into the RTO for combustion, so that the energy consumption of the RTO is higher, and the heat generated by the RTO is not utilized to heat the baking oven of the coating machine, so that the heat is wasted.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks, an object of the present utility model is to provide a coating exhaust gas treatment system, which uses heat generated by RTO itself to heat a coater oven, thereby saving the heating cost of the coater oven.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a coating exhaust treatment system, includes RTO, first heat exchanger and coating machine oven, RTO with the hot side access connection of first heat exchanger, the cold side export of first heat exchanger with the coating machine oven is connected, the RTO is used for burning the waste gas that the coating machine oven produced, the heat that the RTO burns waste gas and is used for right after the replacement of first heat exchanger the coating machine oven heats. The system directly sends high-temperature and high-concentration waste gas at the baking oven of the coating machine into the RTO (regenerative thermal incinerator) for combustion, and the concentration of the waste gas at the baking oven of the coating machine is high, so that when the concentration reaches a certain degree, the self-operation of the RTO can be maintained, and natural gas is not required to be consumed. The energy consumption of RTO is reduced, and heat generated by the RTO heats the baking oven of the coating machine after passing through the first heat exchanger, so that the energy generated by the RTO is fully utilized, and the energy is saved and the emission is reduced.
The utility model is further provided with: the coating machine also comprises a second filter, wherein the second filter is used for filtering the exhaust gas generated by the coating machine, and the second filter is connected with the cold side inlet of the first heat exchanger. The second filter is used for filtering the waste gas that the coating machine produced, and the fresh air that is used for heating the coating machine oven after filtering is lower than the heat exchanger, and the waste gas that produces the coating machine is directly sent into RTO burning for the tradition after heating, and the waste gas of coating machine does not send into RTO burning in this system, reduces the amount of wind that gets into RTO on the one hand, increases the concentration that gets into RTO waste gas, reduces the energy consumption of RTO. And on the other hand, the waste gas at the coating machine is used as fresh air, heat exchange is performed between the waste gas and high-temperature gas discharged by RTO, and the high-temperature fresh air after heat exchange is sent into the oven to heat the oven, so that the heating cost of the oven is saved.
The utility model is further provided with: the coating machine further comprises a second heat exchanger, wherein the cold side inlet of the second heat exchanger is connected with the cold side outlet of the first heat exchanger, and the cold side outlet of the second heat exchanger is connected with the coating machine oven. The fresh air is heated by the second heat exchanger so as to improve the temperature of the fresh air and enable the temperature of the fresh air to reach the temperature required by the baking oven of the heating coating machine.
The utility model is further provided with: the heat exchanger further comprises a heat taking box, wherein the heat taking box is connected with the RTO, a hot side inlet of the second heat exchanger is connected with the heat taking box, and a hot side outlet of the second heat exchanger is connected with a hot side inlet of the first heat exchanger.
The utility model is further provided with: the hot air furnace is characterized by further comprising a hot air furnace, wherein an air inlet of the hot air furnace is connected with a cold side outlet of the second heat exchanger, and an air outlet of the hot air furnace is connected with the coating machine oven.
The utility model is further provided with: the coating machine further comprises a first filter, wherein the first filter is connected with the RTO, and the first filter can filter gas generated by the coating machine oven.
The utility model is further provided with: still include the RTO fan, the RTO fan air inlet with first filter is connected, the gas outlet of RTO fan with the RTO is connected.
The utility model is further provided with: still include the new trend fan, the air inlet of new trend fan with the second filter is connected, the gas outlet of new trend fan with the cold side entry linkage of first heat exchanger.
The utility model is further provided with: the first filter and the second filter are both dry filters.
The beneficial effects of the utility model are as follows:
1) The system directly sends high-temperature and high-concentration waste gas at the baking oven of the coating machine into the RTO (regenerative thermal incinerator) for combustion, and the concentration of the waste gas at the baking oven of the coating machine is high, so that when the concentration reaches a certain degree, the self-operation of the RTO can be maintained, and natural gas is not required to be consumed. The energy consumption of RTO is reduced, and heat generated by the RTO heats the baking oven of the coating machine after passing through the first heat exchanger, so that the energy generated by the RTO is fully utilized, and the energy is saved and the emission is reduced.
2) The second filter is used for filtering the waste gas that the coating machine produced, and the fresh air that is used for heating the coating machine oven after filtering is lower than the heat exchanger, and the waste gas that produces the coating machine is directly sent into RTO burning for the tradition after heating, and the waste gas of coating machine does not send into RTO burning in this system, reduces the amount of wind that gets into RTO on the one hand, increases the concentration that gets into RTO waste gas, reduces the energy consumption of RTO. And on the other hand, the waste gas at the coating machine is used as fresh air, heat exchange is performed between the waste gas and high-temperature gas discharged by RTO, and the high-temperature fresh air after heat exchange is sent into the oven to heat the oven, so that the heating cost of the oven is saved.
3) The method reduces the processing air quantity of the RTO system, reduces the investment of enterprises, saves the energy consumption in the production process of the enterprises, ensures that the enterprises treat waste gas, protects the environment, meets the national emission standard, and reduces the production and operation costs.
Drawings
FIG. 1 is a schematic diagram of the exhaust trend of an exhaust treatment system according to an embodiment of the present utility model;
FIG. 2 is a front view of an exhaust treatment system according to an embodiment of the present utility model;
FIG. 3 is a top view of an exhaust treatment system according to an embodiment of the present utility model.
In the figure: 1. a first filter; 2. an RTO fan; 3. an RTO device; 4. a first heat exchanger; 5. a second heat exchanger; 6. hot blast stove; 7. a heat taking box; 8. a second filter; 9. fresh air blower; 10. an air duct; 11. a chimney; 12. and (5) recycling the pipeline.
Detailed Description
The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.
The exhaust gas of the coater is mainly from the head, tail and oven of the coater. The concentration and temperature of the waste gas at the baking oven of the coating machine are high, and the temperature and concentration of the waste gas at the machine head and the machine tail of the coating machine are low (normal temperature). The coater oven needs to be heated during the production process. The high-temperature high-concentration waste gas at the baking oven of the coating machine is directly fed into an RTO (regenerative thermal incinerator) for combustion, and the waste gas at the machine head and the machine tail of the coating machine is not fed into the RTO for combustion, so that the air quantity entering the RTO is reduced, and the concentration of the waste gas entering the RTO is increased. Because the concentration of the waste gas at the baking oven of the coating machine is high, when the concentration reaches a certain degree, the concentration can maintain the RTO self-running without consuming natural gas. And meanwhile, the waste gas at the head and tail of the coating machine is used as fresh air and exchanges heat with high-temperature gas discharged by RTO. The high-temperature fresh air after heat exchange is sent into the oven to heat the oven, so that the heating cost of the oven is saved. The design reduces the processing air quantity of the RTO system, reduces the investment of enterprises, saves the energy consumption in the production process of the enterprises, ensures that the enterprises treat waste gas, protects the environment, meets the national emission standard, and reduces the production and operation costs.
Referring to fig. 1-3, a coating exhaust gas treatment system in this embodiment includes an RTO3, where the RTO3 is connected to a coater oven, and a first filter 1 and an RTO fan 2 are further disposed between the RTO and the coater oven, where the coater oven, the first filter 1, the RTO fan 2 and the RTO3 are sequentially connected through an air pipe 10, and exhaust gas generated by the coater oven is filtered by the first filter 1, and after solid particles in the gas are removed, the exhaust gas enters the RTO3 to burn under the action of the RTO fan 2. The burnt gas accords with the emission standard and can be directly discharged.
In some embodiments, the system further comprises a second filter 8, a fresh air fan 9 and a first heat exchanger 4, the second filter 8, the fresh air fan 9 and the first heat exchanger 4 are sequentially connected, the second filter 8 is connected with a coating machine, waste gas generated by the coating machine is filtered by the second filter 8 and then used as fresh air, the fresh air enters the first heat exchanger 4 under the action of the fresh air fan 9, the first heat exchanger 4 is connected with an RTO3, high-temperature gas after RTO combustion enters the first heat exchanger 4 and is subjected to heat replacement by the waste gas (low temperature) of the coating machine entering through a cold side inlet of the first heat exchanger 4, the temperature of the high-temperature gas after RTO combustion is reduced after passing through the low-temperature heat exchanger, the waste gas is discharged by a chimney 11 connected with the first heat exchanger 4, and the temperature of the waste gas (low temperature) of the coating machine is increased after passing through the first heat exchanger 4.
In some embodiments, the system further comprises a second heat exchanger 5 and a heat-taking box 7, wherein the heat-taking box 7 is connected with the RTO3, the heat-taking box 7 is connected with a hot side inlet of the second heat exchanger 5, a cold side inlet of the second heat exchanger is connected with a cold side outlet of the first heat exchanger 4, and the heat-taking box 7 heats fresh air by heat of the RTO3 through the second heat exchanger 5. The fresh air (coater exhaust gas) output from the first heat exchanger 4 is heated again by the second heat exchanger 5, so that the temperature of the fresh air can reach the temperature required for heating the coater oven.
In some embodiments, to ensure that the temperature of the fresh air can meet the requirements of the coater oven, a hot blast stove 6 is further included, and when the temperature of the fresh air is insufficient, the hot blast stove 6 is used to heat the fresh air. The air inlet of the hot blast stove 6 is connected with the cold side outlet of the second heat exchanger 5, the air outlet of the hot blast stove 6 is connected with the coating machine oven through a recycling pipeline 12, and after fresh air (waste gas of the coating machine) is heated by the second heat exchanger 5, if the temperature does not reach the temperature of the heating coating machine oven, the fresh air is heated by the hot blast stove 6, so that the fresh air can reach the temperature of the heating coating machine oven. If the fresh air after passing through the second heat exchanger 5 has reached the temperature required to heat the coater oven, the hot blast stove 6 is not started. After the fresh air (waste gas of the coating machine) heats the baking oven of the coating machine, the fresh air (waste gas of the coating machine) and other waste gases generated by the baking oven of the coating machine enter RTO together for combustion, and the circulation is performed.
The working process comprises the following steps: after being filtered by the first filter 1, the waste gas generated by the coating machine oven enters RTO3 for combustion under the action of the RTO fan 2, and the combusted gas is cooled by the first heat exchanger 4 and then is discharged from the chimney 11. Meanwhile, the waste gas generated by the coating machine is filtered by the second filter 8, and then enters the first heat exchanger 4 as fresh air to be heated by the fresh air fan 9, then enters the second heat exchanger 5 to be heated again, then enters the coating machine oven after being heated by the hot air furnace 6, heats the coating machine oven, finally enters RTO3 together with other waste gas generated by the coating machine oven to be combusted, and is discharged from the chimney 11.
In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.
Claims (9)
1. The utility model provides a coating exhaust treatment system, includes RTO (3), first heat exchanger (4) and coating machine oven, its characterized in that, RTO (3) with the hot side access connection of first heat exchanger (4), the cold side export of first heat exchanger (4) with the coating machine oven is connected, the RTO is used for burning the waste gas that the coating machine oven produced, the heat that RTO (3) burning waste gas produced is used for right after passing through first heat exchanger (4) heat transfer the coating machine oven heats.
2. A coating exhaust gas treatment system according to claim 1, further comprising a second filter (8), said second filter (8) being adapted to filter exhaust gas generated by the coating machine, said second filter (8) being connected to the cold side inlet of said first heat exchanger (4).
3. A coating exhaust gas treatment system according to claim 2, further comprising a second heat exchanger (5), the cold side inlet of the second heat exchanger (5) being connected to the cold side outlet of the first heat exchanger (4), the cold side outlet of the second heat exchanger (5) being connected to the coater oven.
4. A coating exhaust gas treatment system according to claim 3, further comprising a heat extraction tank (7), said heat extraction tank (7) being connected to said RTO, a hot side inlet of said second heat exchanger (5) being connected to said heat extraction tank (7), a hot side outlet of said second heat exchanger (5) being connected to a hot side inlet of said first heat exchanger (4).
5. A coating exhaust gas treatment system according to claim 4, further comprising a hot air stove (6), the air inlet of the hot air stove (6) being connected to the cold side outlet of the second heat exchanger (5), the air outlet of the hot air stove (6) being connected to the coater oven.
6. A coating exhaust treatment system according to claim 5, further comprising a first filter (1), said first filter (1) being connected to said RTO (3), said first filter (1) being capable of filtering gases generated by said coater oven.
7. The coating exhaust treatment system of claim 6, further comprising an RTO fan (2), wherein an intake port of the RTO fan (2) is connected to the first filter (1), and an outlet port of the RTO fan (2) is connected to an intake port of the RTO (3).
8. The coating exhaust gas treatment system according to claim 7, further comprising a fresh air fan (9), wherein an air inlet of the fresh air fan (9) is connected to the second filter (8), and an air outlet of the fresh air fan (9) is connected to a cold side inlet of the first heat exchanger (4).
9. A coated exhaust treatment system according to any of claims 6-8, characterized in that the first filter (1) and the second filter (8) are both dry filters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221406203.7U CN219300759U (en) | 2022-06-07 | 2022-06-07 | Coating exhaust treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221406203.7U CN219300759U (en) | 2022-06-07 | 2022-06-07 | Coating exhaust treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219300759U true CN219300759U (en) | 2023-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221406203.7U Active CN219300759U (en) | 2022-06-07 | 2022-06-07 | Coating exhaust treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219300759U (en) |
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2022
- 2022-06-07 CN CN202221406203.7U patent/CN219300759U/en active Active
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