VOC (volatile organic compound) emission treatment system for impregnation room

Abstract

The utility model relates to an impregnation room VOC (volatile organic compound) emission treatment system which comprises an impregnation room, and a first waste gas exhaust pipe connected with a heat accumulating type incinerator is arranged on one side of the impregnation room; a top air seal blower is arranged at the top of the impregnation room, a bottom air seal blower is arranged at the bottom of the impregnation room, a glass room is arranged on the outer side of the impregnation room, and the glass room is communicated with the bottom of the impregnation room through a second waste gas exhaust pipe; a buffer box is arranged on the outer side of the glass room and communicates with the glass room. The buffer box is provided with a first air conveying pipe and a second air conveying pipe which are communicated with the interior of the buffer box, the first air conveying pipe is communicated with the bottom air seal air blower, and the second air conveying pipe is communicated with the top air seal air blower. According to the VOC emission treatment system for the impregnation room, waste gas is introduced into the top air seal air blower and the bottom air seal air blower to serve as fresh air supplement, emission of harmful gas is reduced, consumption of natural gas by the heat accumulating type incinerator is reduced, energy consumption is saved, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to VOC treatment in the impregnation chamber of a gluing machine, and more particularly to a VOC emission treatment system for an impregnation chamber. Background Technology

[0002] The VOC (volatile organic compound) exhaust system in the impregnation chamber of a coating machine is widely used in the coating process of industries such as copper-clad laminate and fiberglass cloth manufacturing. During the coating process, a large amount of waste gas is generated after baking. If this waste gas is not properly treated or recycled and directly discharged into the environment, it will cause serious damage. The production of copper-clad laminate requires impregnating fiberglass cloth with a mixed resin, followed by baking and cooling to form a semi-cured sheet. Since the mixed resin is usually hazardous and releases a large amount of organic compounds, this process is typically carried out in an impregnation chamber. Currently, the VOC waste gas from these impregnation chambers is directly connected to an RTO (regenerative thermal oxidizer), with two coating machines sharing a single RTO for incineration, recycling, and emission. Due to temperature differences, a large amount of solvent is released during transport, resulting in a low temperature concentration in the waste gas. The low-temperature airflow entering the RTO requires a large amount of natural gas, increasing energy consumption. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a VOC emission treatment system for impregnation chambers that enables the reuse of waste gas and saves energy.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] A VOC emission treatment system for an impregnation chamber includes an impregnation chamber. A first exhaust duct connected to a regenerative thermal ignition (RTI) incinerator is installed on one side of the impregnation chamber, and a main exhaust fan is installed on the first exhaust duct. A top-sealed blower is installed at the top of the impregnation chamber, and a bottom-sealed blower is installed at the bottom. Both the top and bottom-sealed blowers are connected to the impregnation chamber via heat exchangers. A closed glass chamber is installed outside the impregnation chamber, and the glass chamber is connected to a waste exhaust port at the bottom of the impregnation chamber via a second exhaust duct. A buffer box, a closed enclosure, is installed outside the glass chamber and is connected to the glass chamber via a glass chamber exhaust duct, on which an exhaust fan is installed. Two air supply pipes, a first air supply pipe and a second air supply pipe, are installed on the buffer box and are connected to its interior. The first air supply pipe is connected to the air inlet of the bottom-sealed blower, and the second air supply pipe is connected to the air inlet of the top-sealed blower.

[0006] Furthermore, a first filter box is provided between the first air duct and the bottom air-sealed blower.

[0007] Furthermore, a second filter box is installed between the second air duct and the top air-sealed blower.

[0008] Furthermore, a cleaning hole is provided on the side of the glass room, and a hard rubber plug that can be opened is provided on the cleaning hole, with the hard rubber plug inserted into the cleaning hole.

[0009] Furthermore, a wind speed measuring device is installed on the side of the glass room, and the probe of the wind speed measuring device is located inside the glass room.

[0010] Furthermore, a manual exhaust valve is installed on the first exhaust pipe, and the manual exhaust valve is located between the impregnation chamber and the main exhaust fan.

[0011] Compared with the prior art, the advantages of this utility model are: this impregnation chamber VOC emission treatment system connects the exhaust gas to the top and bottom air-sealed blowers as a fresh air supplement, reducing the emission of harmful gases. Finally, the concentration of the exhaust solvent entering the regenerative thermal incinerator increases, reducing the natural gas consumption of the regenerative thermal incinerator, saving energy consumption, and reducing production costs. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the VOC emission treatment system for an impregnation chamber according to this utility model.

[0014] In the diagram: 1. Impregnation chamber; 1-1. First exhaust duct; 1-2. Second exhaust duct; 2. Glass chamber; 2-1. Glass chamber exhaust duct; 2-2. Cleaning port; 2-3. Air volume detection port; 3. Glass chamber exhaust fan; 4. Buffer box; 4-1. First air supply duct; 4-2. Second air supply duct; 5. First filter box; 6. Bottom air-sealed blower; 7. Cold exchanger; 8. Second filter box; 9. Top air-sealed blower; 10. Regenerative thermal oxidizer; 11. Exhaust valve; 12. Main exhaust fan. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In the description of the embodiments of the present invention, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate orientation or positional relationships based on the orientation or positional relationships shown in the drawings, or the orientation or positional relationships commonly used when the product of the present invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0017] Furthermore, the use of terms such as "horizontal" or "vertical" does not imply that the component must be absolutely horizontal or vertical, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure or component must be completely horizontal, but can be slightly tilted.

[0018] In the description of the embodiments of this utility model, "a plurality of" means at least two.

[0019] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] Example

[0021] Please refer to the instruction manual attached. Figure 1 As shown, the instruction manual is attached. Figure 1 The diagram shows a structural schematic of a VOC emission treatment system for an impregnation chamber according to this utility model, illustrating the structural state of VOC emission and reuse in the impregnation chamber. In this embodiment, the VOC emission treatment system for an impregnation chamber includes an impregnation chamber 1. A first exhaust duct 1-1 connected to a regenerative thermal oxidizer 10 is provided on one side of the impregnation chamber 1. A main exhaust fan 12 is installed on the first exhaust duct 1-1. To adaptively control the ventilation volume of the first exhaust duct 1-1, a manual exhaust valve 11 is installed on the first exhaust duct 1-1, located between the impregnation chamber 1 and the main exhaust fan 12. A top air-sealed blower 9 is installed at the top of the impregnation chamber 1, and a bottom air-sealed blower 6 is installed at the bottom. A cold exchanger 7 is installed between both the bottom air-sealed blower 6 and the top air-sealed blower 9 and the impregnation chamber 1. (Refer to the appendix of the specification.) Figure 1As shown, an enclosed glass room 2 is provided outside the impregnation chamber 1. The glass room is an independent unit used for collecting and transferring some of the waste from the impregnation chamber 1. The glass room 2 is made of heat-resistant glass and is connected to the waste exhaust port at the bottom of the impregnation chamber 1 via a second waste exhaust pipe 1-2. Some of the waste from the impregnation chamber 1 enters the second waste exhaust pipe 1-2 through its bottom exhaust port and then enters the glass room 2 through the second waste exhaust pipe 1-2. To facilitate cleaning of the inner wall of the glass room 2, a cleaning hole 2-2 is provided on the side of the glass room 2. The cleaning hole 2-2 is fitted with an openable hard rubber plug, which is embedded in the cleaning hole 2-2. A closed door that can be opened and closed can also be provided on the cleaning hole 2-2. A sealing ring needs to be installed between the cleaning hole 2-2 and the air vent 2-2 to ensure a tight seal after closure. This structure is the same as the principle of existing conventional closed doors and is not shown in the diagram. To detect the airflow velocity inside the glass chamber 2, an airflow measuring device is installed on the side of the glass chamber 2, with its probe located inside the glass chamber 2. A buffer box 4 is installed outside the glass chamber 2. The buffer box 4 is a closed box and is connected to the glass chamber 2 via the glass chamber exhaust pipe 2-1. VOCs from the impregnation chamber 1 can briefly accumulate and remain in the buffer box 4. To ensure that the VOCs from the impregnation chamber 1 are transported to the buffer box 4, a glass chamber exhaust fan 3 is installed on the glass chamber exhaust pipe 2-1. Fan 3 draws gas from glass chamber 2 into buffer tank 4, creating a negative pressure as the gas is drawn out of glass chamber 2. This negative pressure allows waste gas from impregnation chamber 1 to enter glass chamber 2 through the second waste exhaust pipe 1-2. Buffer tank 4 is equipped with two interconnected air ducts: a first air duct 4-1 and a second air duct 4-2. The first air duct 4-1 connects to the inlet of the bottom air-sealed blower 6, and the second air duct 4-2 connects to the inlet of the top air-sealed blower 9. The top air-sealed blower 9 draws a portion of the VOCs from the impregnation chamber in buffer tank 4 into a connected cold exchanger 7. After processing by the cold exchanger 7, the VOCs enter impregnation chamber 1 through the inlet at the top of the impregnation chamber. Blower 6 draws a portion of the VOCs from the impregnation chamber in buffer box 4 to the connected cold exchanger 7. After being processed by the cold exchanger 7, the VOCs enter the impregnation chamber 1 through the air inlet at the bottom of the impregnation chamber. To ensure higher cleanliness of the VOCs drawn from the impregnation chamber by the bottom air-sealed blower 6 and the top air-sealed blower 9 from the buffer box 4, a first filter box 5 is installed between the first air duct 4-1 and the bottom air-sealed blower 6, and a second filter box 8 is installed between the second air duct 4-2 and the top air-sealed blower 9. It should be noted that both the first filter box 5 and the second filter box 8 are air filters that can filter the VOCs passing through the impregnation chamber. After filtration, the VOCs are cooled by the corresponding cold exchanger 7 and then enter the impregnation chamber 1 as fresh air.

[0022] This impregnation chamber VOC emission treatment system connects the exhaust gas to the top air-sealed blower 9 and the bottom air-sealed blower 6 as a fresh air supplement, reducing the emission of harmful gases. The final exhaust solvent concentration entering the regenerative thermal incinerator 10 is increased, which reduces the natural gas consumption of the regenerative thermal incinerator 10, saves energy consumption, and reduces production costs.

[0023] It should be emphasized that the above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A VOC emission treatment system for an impregnation chamber, comprising an impregnation chamber (1), wherein a first exhaust pipe (1-1) connected to a regenerative thermal ignition furnace (10) is provided on one side of the impregnation chamber (1), and a main exhaust fan (12) is provided on the first exhaust pipe (1-1); a top air-sealed blower (9) is provided on the top of the impregnation chamber (1), and a bottom air-sealed blower (6) is provided on the bottom; a cold exchanger (7) is provided between the bottom air-sealed blower (6) and the top air-sealed blower (9) and the impregnation chamber (1), characterized in that: The impregnation chamber (1) is provided with a closed glass chamber (2) on the outside. The glass chamber (2) is connected to the waste exhaust port at the bottom of the impregnation chamber (1) through the second waste gas exhaust pipe (1-2). A buffer box (4) is provided on the outside of the glass chamber (2). The buffer box (4) is a closed box and is connected to the glass chamber (2) through the glass chamber exhaust pipe (2-1). A glass chamber exhaust fan (3) is provided on the glass chamber exhaust pipe (2-1). Two air supply pipes (4-1) and (4-2) are provided on the buffer box (4) and are connected to its interior. The first air supply pipe (4-1) is connected to the air inlet of the bottom air seal blower (6), and the second air supply pipe (4-2) is connected to the air inlet of the top air seal blower (9).

2. The VOC emission treatment system for an impregnation chamber according to claim 1, characterized in that: A first filter box (5) is provided between the first air duct (4-1) and the bottom air seal blower (6).

3. The VOC emission treatment system for an impregnation chamber according to claim 1, characterized in that: A second filter box (8) is provided between the second air duct (4-2) and the top air seal blower (9).

4. The VOC emission treatment system for an impregnation chamber according to claim 1, characterized in that: The glass room (2) has a cleaning hole (2-2) on its side. A hard rubber plug that can be opened is provided on the cleaning hole (2-2). The hard rubber plug is inserted into the cleaning hole (2-2).

5. The VOC emission treatment system for an impregnation chamber according to claim 1, characterized in that: A wind speed measuring device is provided on the side of the glass room (2), and the probe of the wind speed measuring device is located inside the glass room (2).

6. The VOC emission treatment system for an impregnation chamber according to claim 1, characterized in that: A manual exhaust valve (11) is provided on the first exhaust pipe (1-1), and the manual exhaust valve (11) is located between the immersion chamber (1) and the main exhaust fan (12).

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