CN214745807U - Micro-emission exhaust gas catalytic combustion system based on air reduction and concentration increasing and waste heat recovery technology - Google Patents
Micro-emission exhaust gas catalytic combustion system based on air reduction and concentration increasing and waste heat recovery technology Download PDFInfo
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- CN214745807U CN214745807U CN202120759116.9U CN202120759116U CN214745807U CN 214745807 U CN214745807 U CN 214745807U CN 202120759116 U CN202120759116 U CN 202120759116U CN 214745807 U CN214745807 U CN 214745807U
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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
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Abstract
The utility model discloses a little emission exhaust gas catalytic combustion system based on subtract wind densification and waste heat recovery technique, including circulation pipeline and once set up the heated air circulation fan on circulation pipeline, electromagnetic heater and catalytic oxidation device, circulation pipeline is connected with air mixing box through outlet pipeline, air mixing box is connected with chimney and panel section bar drying chamber through discharge pipeline and waste heat recovery pipeline respectively, panel section bar drying chamber is connected with the automatic paint spray booth of panel section bar through subtracting wind densification pipe connection, and the automatic paint spray booth of panel section bar passes through filtering pipeline and circulation pipeline connection. The utility model discloses the exhaust-gas treatment system of two technologies that produce VOCs integrates a system in, through VOCs's stack in two processes, forms the waste gas that contains high concentration VOCs to can reduce the power of fan, realize the air reduction densification, reach energy-conserving purpose.
Description
Technical Field
The utility model relates to a waste gas treatment technical field especially relates to little exhaust gas catalytic combustion system based on subtract wind thickening and waste heat recovery technique.
Background
Be provided with the station that stoving technology, spray painting technology etc. can produce VOCs on the production line of panel, section bar, often adopt the mode of handling in introducing catalytic combustion device respectively to the processing of these waste gases to in entire system, because the VOCs concentration that single station produced is lower, so this just leads to the fan to be in can guarantee entire system's normal operating in powerful running state, great improvement the consumption of energy, increased manufacturing cost.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to avoid prior art's weak point, provide the little exhaust gas catalytic combustion system that discharges based on subtract wind thickening and waste heat recovery technique to effectively solve the weak point that exists among the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the micro-emission waste gas catalytic combustion system based on the air reducing and thickening technology and the waste heat recovery technology comprises a circulating pipeline, a hot air circulating fan, an electromagnetic heater and a catalytic oxidation device, wherein the hot air circulating fan, the electromagnetic heater and the catalytic oxidation device are arranged on the circulating pipeline at one time;
a preheating switching valve is arranged between the catalytic oxidation device and the hot air circulating fan in the circulating pipeline;
the connecting position of the outlet pipeline and the circulating pipeline is positioned between the catalytic oxidation device and the preheating switching valve;
an outlet switching valve is arranged on the outlet pipeline;
the connecting position of the filtering pipeline and the circulating pipeline is positioned between the preheating switching valve and the hot air circulating fan, and the filtering pipeline is provided with an inlet switching valve.
Further, a heat exchanger is arranged on the circulating pipeline.
Furthermore, a low-temperature inlet of the heat exchanger is directly connected with an outlet of the hot air circulating fan, a low-temperature outlet of the heat exchanger is directly connected with an inlet of the electromagnetic heater, a high-temperature inlet of the heat exchanger is directly connected with an outlet of the catalytic oxidation device, and a high-temperature outlet of the heat exchanger is directly connected with the preheating switching valve.
Further, a discharge valve is arranged on the discharge pipeline.
Further, a discharge fan is arranged on the discharge pipeline.
Further, a waste heat drying adjusting valve is arranged on the waste heat recovery pipeline.
Further, a waste heat drying fan is arranged on the waste heat recovery pipeline.
Furthermore, a wind-reducing and thickening fan is arranged on the wind-reducing and thickening pipeline.
Furthermore, a dry type filter box is arranged on the filter pipeline.
The above technical scheme of the utility model following beneficial effect has: the utility model discloses the waste gas treatment system of two production VOCs's technologies integrates to a system in, through VOCs's stack in two processes, forms the waste gas that contains high concentration VOCs to can reduce the power of fan, realize the air reduction densification, reach energy-conserving purpose, and before entire system is in the operation, can realize preheating through preheating the system, guarantee that catalytic oxidation device is in normal operating temperature, guarantee to discharge the waste gas up to standard in the air.
Drawings
Fig. 1 is a schematic structural diagram (preheating stage) of the embodiment of the present invention;
fig. 2 is a schematic structural diagram (normal operation stage) of the embodiment of the present invention.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the micro-emission exhaust gas catalytic combustion system based on the wind-reducing and concentration-increasing and waste heat recovery technology in this embodiment includes a circulation pipeline 1, and a hot air circulation fan 2, an electromagnetic heater 3 and a catalytic oxidation device 4 sequentially arranged on the circulation pipeline 1, wherein the circulation pipeline 1 is connected with a wind mixing box 6 through an outlet pipeline 5, the wind mixing box 6 is respectively connected with a chimney 9 and a plate profile drying chamber 10 through a discharge pipeline 7 and a waste heat recovery pipeline 8, the plate profile drying chamber 10 is connected with an automatic plate profile paint spraying chamber 12 through a wind-reducing and concentration-increasing pipeline 11, and the automatic plate profile paint spraying chamber 12 is connected with the circulation pipeline 1 through a filtering pipeline 13;
a preheating switching valve 14 is arranged between the catalytic oxidation device 4 and the hot air circulating fan 2 in the circulating pipeline 1;
the connection position of the outlet pipeline 5 and the circulating pipeline 1 is positioned between the catalytic oxidation device 4 and the preheating switching valve 14;
an outlet switching valve 15 is arranged on the outlet pipeline 5;
the connection position of the filtering pipeline 13 and the circulating pipeline 1 is positioned between the preheating switching valve 14 and the hot air circulating fan 2, and the filtering pipeline 13 is provided with an inlet switching valve 23.
The circulating pipeline 1 is provided with a heat exchanger 16, specifically, a low-temperature inlet 16a of the heat exchanger 16 is directly connected with an outlet of the hot air circulating fan 2, a low-temperature outlet 16b of the heat exchanger 16 is directly connected with an inlet of the electromagnetic heater 3, a high-temperature inlet 16c of the heat exchanger 16 is directly connected with an outlet of the catalytic oxidation device 4, and a high-temperature outlet 16d of the heat exchanger 16 is directly connected with the preheating switching valve 14.
The discharge pipeline 7 is provided with a discharge valve 17 and a discharge fan 18.
And a waste heat drying regulating valve 19 is arranged on the waste heat recovery pipeline 8.
The waste heat recovery pipeline 8 is provided with a waste heat drying fan 20.
The air-reducing and thickening pipeline 11 is provided with an air-reducing and thickening fan 21.
In this embodiment, the heated air circulation fan, the residual heat drying fan 20 and the air reduction and concentration increasing fan 21 are all variable frequency fans.
The filter pipeline 13 is provided with a dry filter box 22 for filtering paint mist.
In order to facilitate the monitoring of the whole system, 7 temperature sensors are provided, four of which are located at the ports of the heat exchanger 16, 1 is located on the inlet-end circulation pipeline 1 of the catalytic oxidation device 4, 1 is located at the inlet end inside the catalytic oxidation device 4, and 1 is located at the outlet end inside the catalytic oxidation device 4.
The utility model discloses divide into two stages in work:
the first stage is as follows: preheating, at this time, closing the outlet switching valve 15 and the inlet switching valve 23, opening the preheating switching valve 14, starting the hot air circulating fan 2, and performing circulating flow heating on the gas in the circulating pipeline 1, wherein the flowing direction of the gas is indicated by an arrow in fig. 1, and when the inlet end temperature (T3 or T4) of the catalytic oxidation device 4 reaches a preset value, the hotter operation is completed, and the next stage is ready to be entered;
and a second stage: opening an outlet switching valve 15 and an inlet switching valve 23, closing a preheating switching valve 14, enabling the flow direction of gas to be the direction indicated by an arrow in figure 2, enabling the gas treated by a catalytic oxidation device 4 to enter an air mixing box 6 through an outlet pipeline 5 for distribution, enabling a part of treated waste gas to be discharged through a discharge pipeline 7 and a chimney 9, enabling the other part of treated waste gas to enter a plate section drying chamber 10, enabling the waste gas to have a certain heat quantity so as to achieve the effect of auxiliary drying, enabling drying tail gas containing VOCs discharged from the plate section drying chamber 10 to enter an automatic plate section spray-painting chamber 12 through an air-reducing concentration-increasing pipeline 11, enabling the waste gas containing high-concentration VOCs to be formed through superposition of VOCs in two processes, and further being capable of reducing the power of a fan and achieving the purposes of air-reducing and concentrating, enabling the waste gas containing high-concentration VOCs to pass through a dry type filter box 22, and pollutants generated in the paint spraying process are filtered, then the waste gas containing high-concentration VOCs enters the catalytic oxidation device 4 after being heated by the electromagnetic heater 3, the VOCs are removed, and the treated waste gas enters the air mixing box 6 to circulate.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (9)
1. Little emission waste gas catalytic combustion system based on subtract wind densification and waste heat recovery technique its characterized in that: the device comprises a circulating pipeline, a hot air circulating fan, an electromagnetic heater and a catalytic oxidation device, wherein the hot air circulating fan, the electromagnetic heater and the catalytic oxidation device are arranged on the circulating pipeline at one time;
a preheating switching valve is arranged between the catalytic oxidation device and the hot air circulating fan in the circulating pipeline;
the connecting position of the outlet pipeline and the circulating pipeline is positioned between the catalytic oxidation device and the preheating switching valve;
an outlet switching valve is arranged on the outlet pipeline;
the connecting position of the filtering pipeline and the circulating pipeline is positioned between the preheating switching valve and the hot air circulating fan, and the filtering pipeline is provided with an inlet switching valve.
2. The micro-emission exhaust gas catalytic combustion system based on wind reduction and concentration enhancement and waste heat recovery technology according to claim 1, characterized in that: and a heat exchanger is arranged on the circulating pipeline.
3. The micro-emission exhaust gas catalytic combustion system based on wind reduction and concentration enhancement and waste heat recovery technology according to claim 2, characterized in that: the low-temperature inlet of the heat exchanger is directly connected with the outlet of the hot air circulating fan, the low-temperature outlet of the heat exchanger is directly connected with the inlet of the electromagnetic heater, the high-temperature inlet of the heat exchanger is directly connected with the outlet of the catalytic oxidation device, and the high-temperature outlet of the heat exchanger is directly connected with the preheating switching valve.
4. The micro-emission exhaust gas catalytic combustion system based on wind reduction and concentration enhancement and waste heat recovery technology according to claim 1, characterized in that: and the discharge pipeline is provided with a discharge valve.
5. The micro-emission exhaust gas catalytic combustion system based on wind reduction and concentration enhancement and waste heat recovery technology according to claim 1, characterized in that: and the discharge pipeline is provided with a discharge fan.
6. The micro-emission exhaust gas catalytic combustion system based on wind reduction and concentration enhancement and waste heat recovery technology according to claim 1, characterized in that: and a waste heat drying regulating valve is arranged on the waste heat recovery pipeline.
7. The micro-emission exhaust gas catalytic combustion system based on wind reduction and concentration enhancement and waste heat recovery technology according to claim 1, characterized in that: and a waste heat drying fan is arranged on the waste heat recovery pipeline.
8. The micro-emission exhaust gas catalytic combustion system based on wind reduction and concentration enhancement and waste heat recovery technology according to claim 1, characterized in that: and the air-reducing and thickening pipeline is provided with an air-reducing and thickening fan.
9. The micro-emission exhaust gas catalytic combustion system based on wind reduction and concentration enhancement and waste heat recovery technology according to claim 1, characterized in that: and a dry type filter box is arranged on the filter pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120759116.9U CN214745807U (en) | 2021-04-14 | 2021-04-14 | Micro-emission exhaust gas catalytic combustion system based on air reduction and concentration increasing and waste heat recovery technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120759116.9U CN214745807U (en) | 2021-04-14 | 2021-04-14 | Micro-emission exhaust gas catalytic combustion system based on air reduction and concentration increasing and waste heat recovery technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214745807U true CN214745807U (en) | 2021-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120759116.9U Active CN214745807U (en) | 2021-04-14 | 2021-04-14 | Micro-emission exhaust gas catalytic combustion system based on air reduction and concentration increasing and waste heat recovery technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214745807U (en) |
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2021
- 2021-04-14 CN CN202120759116.9U patent/CN214745807U/en active Active
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