Waste gas treatment system

Abstract

The utility model discloses a waste gas treatment system which comprises M paths of waste gas treatment devices, and M is an integer greater than 1; each path of waste gas treatment device comprises a waste gas collecting box, a waste gas supply valve, a waste gas fan and waste gas treatment equipment; an inlet of the waste gas collecting box is connected with exhaust ports of a group of production equipment, a first outlet of the waste gas collecting box is connected with an inlet of the waste gas supply valve, an outlet of the waste gas supply valve is connected with an inlet of the waste gas fan, and an outlet of the waste gas fan is connected with an inlet of the waste gas treatment equipment; cavities of the M waste gas collecting boxes of the M paths of waste gas treatment devices are sequentially communicated through pipelines; and waste gas communicating valves are respectively arranged on pipelines for communicating the cavities of the two adjacent waste gas collecting boxes. The waste gas treatment system disclosed by the utility model can improve the utilization rate of waste gas treatment equipment, reduce energy consumption and environmental pollution, and is convenient to repair and maintain.

Description

Technical Field

[0001] The utility model relates to energy-saving and environmental protection technologies, and particularly to an exhaust gas treatment system. Background Art

[0002] When installing coating equipment in the current high-frequency and high-speed substrate industry, exhaust gas treatment equipment is usually equipped synchronously to treat the exhaust gas generated by coating. The exhaust gas treatment equipment generally adopts quantitative control such as one-to-two or one-to-three. When starting the production equipment, the corresponding exhaust gas treatment equipment needs to be started. However, with the industrial upgrade, products are becoming more and more high-end, fragmented, and sporadic, and the exhaust gas generated during production is less and less. The exhaust gas treatment equipment cannot be utilized to the maximum extent, and in order to reach the combustion temperature and emission standards, the less the production exhaust gas is generated, the lower the energy (such as natural gas) use efficiency is. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an exhaust gas treatment system, which can improve the utilization rate of exhaust gas treatment equipment, reduce energy consumption, reduce environmental pollution, and facilitate maintenance.

[0004] To solve the above technical problem, the exhaust gas treatment system provided by the utility model includes M paths of exhaust gas treatment devices, where M is an integer greater than 1;

[0005] Each path of exhaust gas treatment device includes an exhaust gas collecting box 1, an exhaust gas supply valve 3, an exhaust gas fan 4, and an exhaust gas treatment device 5; the inlet of the exhaust gas collecting box 1 is connected to the exhaust port of a group of production equipment 2, the first outlet of the exhaust gas collecting box 1 is connected to the inlet of the exhaust gas supply valve 3, the outlet of the exhaust gas supply valve 3 is connected to the inlet of the exhaust gas fan 4, and the outlet of the exhaust gas fan 4 is connected to the inlet of the exhaust gas treatment device 5;

[0006] The cavities of the M exhaust gas collecting boxes 1 of the M paths of exhaust gas treatment devices are sequentially connected through pipelines;

[0007] Exhaust gas connection valves 6 are respectively arranged on the pipelines connecting the cavities of adjacent two exhaust gas collecting boxes 1.

[0008] Preferably, a group of production equipment 2 includes at least N production equipment, where N is a positive integer.

[0009] Preferably, the first outlet of the exhaust gas treatment device 5 is connected to a chimney 7.

[0010] Preferably, the production equipment 2 is a coating machine.

[0011] Preferably, the exhaust gas supply valve 3 is a pneumatic valve;

[0012] The exhaust gas connection valve 6 is a pneumatic valve;

[0013] The power of each exhaust gas supply valve 3 and the exhaust gas connection valve 6 is supplied by an air storage tank;

[0014] The opening and closing of the exhaust gas supply valve 3 and the exhaust gas connection valve 6 are controlled by a PLC.

[0015] Preferably, the exhaust gas treatment system further includes M exhaust gas heating devices;

[0016] Each exhaust gas heating device includes a hot air blower 11, a hot air heat exchanger 12, a hot air supply valve 13 and a hot air pressure stabilizing box 14; the inlet of the hot air blower 11 is connected to the second outlet of an exhaust gas treatment device 5; the outlet of the hot air blower 11 is connected to the inlet of the hot air heat exchanger 12; the outlet of the hot air heat exchanger 12 is connected to the inlet of the hot air supply valve 13; the outlet of the hot air supply valve 13 is connected to the inlet of the hot air pressure stabilizing box 14; the outlet of the hot air pressure stabilizing box 14 is used to supply heat to a group of production equipment 2;

[0017] The cavities of the M hot air pressure stabilizing boxes 14 of the M exhaust gas heating devices are sequentially connected through pipelines;

[0018] Hot air connection valves 16 are respectively arranged on the pipelines connecting the cavities of adjacent two hot air pressure stabilizing boxes 14.

[0019] Preferably, the hot air supply valve 13 and the hot air connection valve 16 are pneumatic valves;

[0020] The power of each hot air supply valve 13 and the hot air connection valve 16 is supplied by an air storage tank;

[0021] The opening and closing of the hot air supply valve 13 and the hot air connection valve 16 are controlled by a PLC.

[0022] To solve the above technical problems, an exhaust gas treatment system provided by the present utility model includes M exhaust gas heating devices, where M is an integer greater than 1;

[0023] Each exhaust gas heating device includes a hot air blower 11, a hot air heat exchanger 12, a hot air supply valve 13 and a hot air pressure stabilizing box 14; the inlet of the hot air blower 11 is connected to the second outlet of an exhaust gas treatment device 5; the outlet of the hot air blower 11 is connected to the inlet of the hot air heat exchanger 12; the outlet of the hot air heat exchanger 12 is connected to the inlet of the hot air supply valve 13; the outlet of the hot air supply valve 13 is connected to the inlet of the hot air pressure stabilizing box 14; the outlet of the hot air pressure stabilizing box 14 is used to supply heat to a group of production equipment 2;

[0024] The cavities of the M hot air pressure stabilizing boxes 14 of the M exhaust gas heating devices are sequentially connected through pipelines;

[0025] Hot air connection valves 16 are respectively arranged on the pipelines connecting the cavities of adjacent two hot air pressure stabilizing boxes 14.

[0026] For the waste gas treatment system of the present utility model, a waste gas supply valve 3 is provided in the pipeline between the waste gas collecting box 1 and the waste gas fan 4 of the same waste gas treatment device to cut off the waste gas; a waste gas connection valve 6 is provided in the pipeline between the waste gas collecting boxes 1 of adjacent waste gas treatment devices. The waste gas collecting boxes 1 of multiple waste gas treatment devices are connected in parallel. After the connection of the waste gas collecting boxes 1, since the effective use volume of the waste gas collecting box 1 increases, the wind pressure is more stable, the frequency fluctuation of the waste gas fan 4 during production is smaller, and the production process is more stable; the waste gas treatment equipment 5 in multiple waste gas treatment devices can be used in parallel, and the waste gas treatment equipment 5 participating in the work can be flexibly switched according to the actual production conditions of each group of production equipment. Each waste gas treatment equipment 5 is flexibly scheduled to treat the waste gas generated by each group of production equipment 2. When the production equipment 2 is not running enough, the waste gas treatment equipment 5 can be flexibly selected for use, improving the utilization rate of the waste gas treatment equipment 5, saving the fuel (natural gas) consumption of the waste gas treatment equipment 5, reducing energy consumption, and reducing environmental pollution. In addition, after the waste gas treatment equipment 5 / production equipment 2 reaches the shutdown and maintenance cycle, it can be flexibly switched for use to implement shutdown and maintenance, which is convenient for the repair and maintenance of the waste gas treatment system. Brief Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for the present utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 It is a schematic structural diagram of an embodiment of the waste gas treatment system of the present utility model;

[0029] Figure 2 It is a schematic structural diagram of another embodiment of the waste gas treatment system of the present utility model.

[0030] Description of the Reference Numerals:

[0031] 1 waste gas collecting box; 3 waste gas supply valve; 4 waste gas fan; 5 waste gas treatment equipment; 2 production equipment; 6 waste gas connection valve; 7 chimney; 11 hot air fan; 12 hot air heat exchanger; 13 hot air supply valve; 14 hot air pressure stabilizing box; 16 hot air connection valve. Detailed Description of the Embodiments

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0033] In this application, the use of "first", "second" and similar terms does not denote any order, quantity or importance, but is only used to distinguish different components. Words such as "comprising" or "including" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", "front", "rear", etc. are only used to represent relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0034] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments may be combined with each other.

[0035] Embodiment 1

[0036] As Figure 1 shown, the waste gas treatment system includes M waste gas treatment devices, where M is an integer greater than 1 (such as 2, 3, 6, 9, etc.);

[0037] Each waste gas treatment device includes a waste gas collecting box 1, a waste gas supply valve 3, a waste gas fan 4 and a waste gas treatment equipment 5; the inlet of the waste gas collecting box 1 is connected to the exhaust port of a group of production equipment 2, the first outlet of the waste gas collecting box 1 is connected to the inlet of the waste gas supply valve 3, the outlet of the waste gas supply valve 3 is connected to the inlet of the waste gas fan 4, and the outlet of the waste gas fan 4 is connected to the inlet of the waste gas treatment equipment 5;

[0038] The cavities of the M waste gas collecting boxes 1 of the M waste gas treatment devices are sequentially connected through pipelines;

[0039] Waste gas connection valves 6 are respectively arranged on the pipelines connecting the cavities of adjacent two waste gas collecting boxes 1.

[0040] Preferably, a group of production equipment 2 includes at least N production equipment, where N is a positive integer, such as N is 1, 2, 3, 4, 7, etc.

[0041] Preferably, the first outlet of the waste gas treatment equipment 5 is connected to a chimney 7.

[0042] Preferably, the production equipment 2 is a coater.

[0043] Preferably, the exhaust gas supply valve 3 is a pneumatic valve; the exhaust gas connection valve 6 is a pneumatic valve.

[0044] Preferably, the power of each exhaust gas supply valve 3 and exhaust gas connection valve 6 is supplied by an air storage tank.

[0045] Preferably, the opening and closing of the exhaust gas supply valve 3 and the exhaust gas connection valve 6 are controlled by a PLC, so as to realize the interconnection of the exhaust gas of the production equipment.

[0046] In the exhaust gas treatment system of the first embodiment, under normal circumstances, each exhaust gas supply valve 3 is in an open state, and each exhaust gas connection valve 6 is in a closed state. At this time, the exhaust gas treatment equipment 5 of each exhaust gas treatment device operates independently. The exhaust gas generated by a group of production equipment 2 connected to the inlet of the exhaust gas collecting box 1 in each exhaust gas treatment device is treated by the exhaust gas treatment equipment 5 in the corresponding exhaust gas treatment device (for example, combustion treatment). When it is necessary to use the exhaust gas treatment equipment 5 in one exhaust gas treatment device to simultaneously treat the exhaust gas generated by the production equipment 2 in other exhaust gas treatment devices adjacent to this exhaust gas treatment device in sequence, the exhaust gas supply valve 3 in this exhaust gas treatment device can be opened, and the exhaust gas supply valves 3 in other exhaust gas treatment devices adjacent to this exhaust gas treatment device in sequence can be closed, and the exhaust gas connection valve 6 provided on the pipeline connecting the cavity of the exhaust gas collecting box 1 of this exhaust gas treatment device and the exhaust gas collecting boxes 1 of other exhaust gas treatment devices adjacent to this exhaust gas treatment device in sequence can be opened; and so on. It is possible to use A exhaust gas treatment equipment 5 to treat the exhaust gas generated by the production equipment 2 in B exhaust gas treatment devices, where A is a positive integer less than M, B is a positive integer less than or equal to M, and A is less than B.

[0047] The waste gas treatment system of the first embodiment is provided with a waste gas supply valve 3 in the pipeline between the waste gas collecting box 1 of the same waste gas treatment device and the waste gas fan 4 to cut off the waste gas; a waste gas connection valve 6 is provided in the pipeline between the waste gas collecting boxes 1 of adjacent waste gas treatment devices, and the waste gas collecting boxes 1 in multiple waste gas treatment devices are connected in parallel. After the waste gas collecting boxes 1 are connected, due to the increase in the effective use volume of the waste gas collecting boxes 1, the wind pressure becomes more stable, the frequency fluctuation of the waste gas fan 4 during production is smaller, and the production process is more stable; the waste gas treatment equipment 5 in multiple waste gas treatment devices can be used in parallel, and the waste gas treatment equipment 5 participating in work can be flexibly switched according to the actual production conditions of each group of production equipment, and each waste gas treatment equipment 5 can be flexibly scheduled to treat the waste gas generated by each group of production equipment 2. When the production equipment 2 is not fully started, the waste gas treatment equipment 5 can be flexibly selected for use, improving the utilization rate of the waste gas treatment equipment 5, saving the fuel (natural gas) consumption of the waste gas treatment equipment 5, reducing energy consumption, and reducing environmental pollution. In addition, after the waste gas treatment equipment 5 / production equipment 2 reaches the shutdown and maintenance period, they can be flexibly switched for use to implement shutdown and maintenance, which is convenient for the repair and maintenance of the waste gas treatment system.

[0048] The second embodiment

[0049] As Figure 2 shown, the waste gas treatment system further includes M waste gas heating devices, where M is an integer greater than 1;

[0050] Each waste gas heating device includes a hot air fan 11, a hot air heat exchanger 12, a hot air supply valve 13 and a hot air pressure stabilizing box 14; the inlet of the hot air fan 11 is connected to the second outlet of a waste gas treatment equipment 5, the outlet of the hot air fan 11 is connected to the inlet of the hot air heat exchanger 12, the outlet of the hot air heat exchanger 12 is connected to the inlet of the hot air supply valve 13, the outlet of the hot air supply valve 13 is connected to the inlet of the hot air pressure stabilizing box 14, and the outlet of the hot air pressure stabilizing box 14 is used to supply heat to a group of production equipment 2;

[0051] The cavities of the M hot air pressure stabilizing boxes 14 of the M waste gas heating devices are sequentially connected through pipelines;

[0052] Hot air connection valves 16 are respectively provided on the pipelines connecting the cavities of adjacent two hot air pressure stabilizing boxes 14.

[0053] Preferably, the hot air supply valve 13 and the hot air connection valve 16 are pneumatic valves.

[0054] Preferably, the power of each hot air supply valve 13 and hot air connection valve 16 is supplied by an air storage tank.

[0055] Preferably, the opening and closing of the hot air supply valve 13 and the hot air connection valve 16 are controlled by a PLC, so as to realize the interconnection of hot air entering the production equipment.

[0056] For the waste gas treatment system of the second embodiment, under normal circumstances, each hot air supply valve 13 is in an open state, and each hot air connection valve 16 is in a closed state. At this time, the waste gas treatment equipment 5 corresponding to each waste gas heating device generates heat and supplies heat to a corresponding group of production equipment 2 separately. When one waste gas heating device is selected to supply heat to the groups of production equipment 2 corresponding to other adjacent waste gas heating devices in sequence, the hot air supply valve 13 in the waste gas treatment device of this path can be opened, and the hot air supply valves 13 in other waste gas heating devices adjacent to this waste gas heating device in sequence can be closed, and the hot air connection valve 16 provided on the pipeline connecting the cavity of the hot air pressure stabilizing box 14 of this waste gas heating device and other waste gas heating devices adjacent to this waste gas heating device in sequence can be opened; and so on. A waste gas treatment equipment 5 can be used to supply heat to the production equipment 2 corresponding to B waste gas heating devices. A is a positive integer less than M, B is a positive integer less than or equal to M, and A is less than B.

[0057] For the waste gas treatment system of the second embodiment, the waste heat generated by multiple waste gas treatment equipment 5 is recovered in a parallel manner and supplied to multiple groups of production equipment 2; a hot air supply valve 13 is provided on the pipeline between the hot air pressure stabilizing box 14 and the hot air heat exchanger 12 of the same waste gas heating device to cut off the hot air; a hot air connection valve 16 is provided on the pipeline between the hot air pressure stabilizing boxes 14 of adjacent waste gas heating devices; the hot air pressure stabilizing boxes 14 in multiple waste gas heating devices are connected in a parallel manner. After the hot air pressure stabilizing boxes 14 are connected, due to the increase in the effective use volume of the hot air pressure stabilizing boxes 14, the wind pressure is more stable, and the heat supply to the production equipment 2 is more stable; the waste gas treatment equipment 5 corresponding to each waste gas heating device can be used in parallel, and the waste gas treatment equipment 5 participating in the heat supply can be flexibly switched according to the actual production conditions of each group of production equipment requiring heat supply, and each waste gas treatment equipment 5 can be flexibly scheduled to supply heat to each group of production equipment 2. When there are fewer production equipment 2 requiring heat supply, under the condition of meeting the heat supply demand of the production equipment 2, the valves can be switched to make as few waste gas treatment equipment 5 supply heat as possible, improving the utilization rate of the waste gas treatment equipment 5, saving the fuel (natural gas) consumption of the waste gas treatment equipment 5, reducing energy consumption, and reducing environmental pollution. In addition, after the waste gas treatment equipment 5 / production equipment 2 reaches the shutdown maintenance period, it can be flexibly switched for use to implement shutdown maintenance, which is convenient for the repair and maintenance of the waste gas treatment system.

[0058] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An exhaust gas treatment system, characterized in that, It includes M waste gas treatment devices, where M is an integer greater than 1; Each waste gas treatment device includes a waste gas collecting box (1), a waste gas supply valve (3), a waste gas blower (4), and a waste gas treatment equipment (5); the inlet of the waste gas collecting box (1) is connected to the exhaust port of a group of production equipment (2), the first outlet of the waste gas collecting box (1) is connected to the inlet of the waste gas supply valve (3), the outlet of the waste gas supply valve (3) is connected to the inlet of the waste gas blower (4), and the outlet of the waste gas blower (4) is connected to the inlet of the waste gas treatment equipment (5); The cavities of the M waste gas collecting boxes (1) of the M waste gas treatment devices are connected in sequence through pipelines; A waste gas connection valve (6) is respectively arranged on the pipeline connecting the cavities of two adjacent waste gas collecting boxes (1).

2. The waste gas treatment system according to claim 1, wherein A group of production equipment (2) includes at least N production equipment, and N is a positive integer.

3. The waste gas treatment system according to claim 1, wherein The first outlet of the waste gas treatment equipment (5) is connected to a chimney (7).

4. The waste gas treatment system according to claim 1, wherein The production equipment (2) is a coater.

5. The waste gas treatment system according to claim 1, wherein The waste gas supply valve (3) is a pneumatic valve; The waste gas connection valve (6) is a pneumatic valve; The power of each waste gas supply valve (3) and waste gas connection valve (6) is supplied by an air storage tank; The opening and closing of the waste gas supply valve (3) and waste gas connection valve (6) are controlled by a PLC.

6. The waste gas treatment system according to claim 1, wherein The waste gas treatment system further includes M waste gas heating devices; Each waste gas heating device includes a hot air blower (11), a hot air heat exchanger (12), a hot air supply valve (13), and a hot air pressure stabilizing box (14); the inlet of the hot air blower (11) is connected to the second outlet of a waste gas treatment equipment (5); the outlet of the hot air blower (11) is connected to the inlet of the hot air heat exchanger (12); the outlet of the hot air heat exchanger (12) is connected to the inlet of the hot air supply valve (13); the outlet of the hot air supply valve (13) is connected to the inlet of the hot air pressure stabilizing box (14); the outlet of the hot air pressure stabilizing box (14) is used to supply heat to a group of production equipment (2); The cavities of the M hot air pressure stabilizing boxes (14) of the M waste gas heating devices are connected in sequence through pipelines; A hot air connection valve (16) is respectively arranged on the pipeline connecting the cavities of two adjacent hot air pressure stabilizing boxes (14).

7. The waste gas treatment system according to claim 6, wherein The hot air supply valve (13) and hot air connection valve (16) are pneumatic valves; The power of each hot air supply valve (13) and hot air connection valve (16) is supplied by an air storage tank; The opening and closing of the hot air supply valve (13) and hot air connection valve (16) are controlled by a PLC.

8. An exhaust gas treatment system, characterized in that, It includes M waste gas heating devices, where M is an integer greater than 1; Each waste gas heating device includes a hot air blower (11), a hot air heat exchanger (12), a hot air supply valve (13) and a hot air pressure stabilizing tank (14); the inlet of the hot air blower (11) is connected to the second outlet of a waste gas treatment device (5); the outlet of the hot air blower (11) is connected to the inlet of the hot air heat exchanger (12); the outlet of the hot air heat exchanger (12) is connected to the inlet of the hot air supply valve (13); the outlet of the hot air supply valve (13) is connected to the inlet of the hot air pressure stabilizing tank (14); the outlet of the hot air pressure stabilizing tank (14) is used for heating a group of production equipment (2). The cavities of the M hot air pressure stabilizing tanks (14) of the M-way waste gas heating device are connected in sequence through pipelines. A hot air connection valve (16) is respectively arranged on the pipeline connecting the cavities of two adjacent hot air pressure stabilizing tanks (14).

9. The waste gas treatment system according to claim 8, wherein the hot air supply valve (13) and the hot air connection valve (16) are pneumatic valves; the power of each hot air supply valve (13) and hot air connection valve (16) is supplied by an air storage tank; the opening and closing of the hot air supply valve (13) and the hot air connection valve (16) are controlled by a PLC.

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