A purification device for high-temperature, high-humidity, dust-containing exhaust gas

Abstract

The utility model discloses a kind of for high temperature, high humidity, purification device of dust-containing waste gas, including shell, shell is provided with air passage group, air passage group includes air inlet, exhaust passage and backblowing air passage, air inlet, exhaust passage and backblowing air passage are sequentially arranged from bottom to top in shell;Exhaust passage and backblowing air passage between are provided with circulating fan, circulating fan is arranged in shell outside;Air passage group at least one side is provided with one group or multiple groups of purification assembly, dust-containing waste gas enters purification assembly purification by the air inlet and is discharged by exhaust passage, exhaust passage discharged gas is circulated into backblowing air passage by circulating fan and is backblown to the dust removal of purification assembly;High-temperature clean gas after purification is backblown to purification assembly, the water vapor in dust-containing waste gas that remains in purification assembly cannot be condensed into water droplet, avoid filter bag to be wetted and adhere dust to cause air permeability to reduce, to extend filter bag replacement cycle, the overall purification efficiency of purification device improves, operation maintenance cost reduces.

Description

Technical Field

[0001] This utility model belongs to the field of waste gas purification technology, specifically relating to a purification device for high-temperature, high-humidity, dust-laden waste gas. Background Technology

[0002] During factory production and processing, high-temperature, high-humidity, and dusty waste gases are usually emitted. When traditional purification devices purify such gases, the water vapor in the gas easily condenses into water droplets. When dust comes into contact with water droplets, it becomes wet dust. When this waste gas passes through the filter bag, the wet dust adheres to the surface of the filter bag, clogging the air pores and reducing the air permeability of the filter bag. This reduces the purification capacity of the purification device, requiring frequent filter bag replacements, which seriously affects the purification efficiency and service life of the purification device. Utility Model Content

[0003] The purpose of this invention is to provide a purification device for high-temperature, high-humidity, dusty waste gas. The "high-temperature clean gas" purified by the purification device is pressurized by a fan and then sent back into the purification chamber. The filter bag is then reverse-blown to shake off the dust collected by the filter bag, restoring the filter bag's ability to re-collect dust and preventing the filter bag from becoming clogged and unable to filter dusty gas.

[0004] This utility model is achieved through the following technical solution:

[0005] A purification device for high-temperature, high-humidity, dusty waste gas includes a housing. An air duct assembly is disposed within the housing, comprising an inlet duct, an outlet duct, and a backflushing duct, arranged sequentially from bottom to top within the housing. A circulating fan is disposed between the outlet duct and the backflushing duct, and the circulating fan is disposed outside the housing. At least one side of the air duct assembly has one or more purification components. The dusty waste gas enters the purification components through the inlet duct for purification and is discharged through the outlet duct. The gas discharged from the outlet duct is circulated back into the backflushing duct by the circulating fan to backflush and remove dust from the purification components.

[0006] Preferably, an intake valve is provided at the location of each purification component in the intake duct, and an exhaust valve is provided at the location of each purification component in the exhaust duct.

[0007] Preferably, a backflush valve is provided at the location of each group of purification components in the backflush air duct.

[0008] Preferably, the purification assembly includes an ash hopper, a purification chamber, and a clean air chamber. The purification chamber is located between the ash hopper and the clean air chamber. The ash hopper is positioned at the bottom for collecting dust. The bottom of the purification chamber is connected to the ash hopper, and the bottom sidewall of the purification chamber is connected to the air inlet. The clean air chamber is connected to the purification chamber, and the bottom sidewall of the clean air chamber is connected to the exhaust duct. The top sidewall of the clean air chamber is connected to the backflushing air duct.

[0009] Preferably, the purification chamber is provided with multiple air passages, and each air passage is provided with a filter bag.

[0010] Preferably, multiple purification components are provided on both sides of the airway assembly.

[0011] Preferably, a first maintenance corridor is provided inside the housing above the air intake.

[0012] Preferably, a second maintenance corridor is provided inside the housing above the exhaust duct.

[0013] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0014] In this invention, after the high-temperature dust-laden gas is purified by the purification device, the purified high-temperature clean gas is used to back-flush the purification component, so that the water vapor in the dust-laden waste gas remaining in the purification component cannot condense into water droplets, thus preventing the filter bag from getting wet and sticking to dust, which would reduce the air permeability and extend the filter bag replacement cycle. The overall purification efficiency of the purification device is improved and the operation and maintenance costs are reduced. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings in the embodiments will be briefly described 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.

[0016] Figure 1 This is a front structural diagram of the purification device in this utility model.

[0017] Figure 2 This is a front structural cross-sectional view of the purification device in this utility model.

[0018] Figure 3 This is a cross-sectional view of the purification device of this utility model with a purification component on one side.

[0019] Figure 4 This is a cross-sectional view of the purification device in this utility model, which has purification components on both sides.

[0020] Wherein: 1-shell, 2-inlet duct, 21-inlet valve, 3-exhaust duct, 31-exhaust valve, 4-backflush duct, 41-backflush valve, 5-circulating fan, 6-ash hopper, 7-purification chamber, 71-ventilation duct, 72-filter bag, 8-clean air chamber, 9-first maintenance corridor, 10-second maintenance corridor, 20-exhaust fan. Detailed Implementation

[0021] 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 some embodiments of this utility model, but not all embodiments.

[0022] Example 1:

[0023] A purification device for high-temperature, high-humidity, dust-laden waste gas, such as... Figure 1 , Figure 2 and Figure 3As shown, the system includes a housing 1, within which an air duct assembly is provided. The air duct assembly includes an inlet duct 2, an exhaust duct 3, and a backflush duct 4, arranged sequentially from bottom to top within the housing 1. A circulating fan 5 is installed between the exhaust duct 3 and the backflush duct 4, located outside the housing 1. An exhaust fan 20 is connected to the end of the exhaust duct 3, also located outside the housing 1. Multiple purification components are arranged on one side of the air duct assembly. Dust-laden exhaust gas enters the purification components through the inlet duct 2, is purified, and is discharged through the exhaust duct 3. The purified gas discharged from the exhaust duct 3 is circulated back into the backflush duct 4 by the circulating fan 5 to backflush and remove dust from the purification components. Multiple purification components are arranged side-by-side within the housing 1. The inlet duct 2, exhaust duct 3, and backflush duct 4 are located on the sides of the purification components and sequentially connected to multiple purification components. Each purification component is located within the inlet duct 2. An inlet valve 21 is provided, and an exhaust valve 31 is provided at the position of each group of purification components in the exhaust duct 3. A backflush valve 41 is provided at the position of each group of purification components in the backflush duct 4. During normal purification of dust-laden waste gas, the backflush valves 41 of all purification components are closed, and the inlet valve 21 and exhaust valve 31 are open. The dust-laden waste gas enters the exhaust duct 3 after being purified and filtered by the purification components, and is finally discharged through the exhaust fan 20 at the end of the exhaust duct 3. When it is necessary to regenerate the dust of one group of purification components, the exhaust valve 31 of that group of purification components is closed, the inlet valve 21 is kept open, the backflush valve 41 of that group of purification components is opened, and the circulating fan 5 is turned on to introduce the high-temperature gas purified by the other purification components into the backflush duct 4. The purified high-temperature gas enters the purification components from the backflush duct 4 to backflush and remove dust from the purification components, so that they can restore the purification function. The backflush airflow flows back into the main intake pipe through the inlet valve 21. To facilitate maintenance, a first maintenance corridor 9 is provided inside the housing 1 above the air intake duct 2, and a second maintenance corridor 10 is provided above the exhaust duct 3. The daily inspection and maintenance of the device are carried out using the two maintenance corridors.

[0024] Example 2:

[0025] This embodiment further defines the purification component based on the above embodiments, such as... Figure 2 and Figure 3As shown, the purification assembly includes a dust hopper 6, a purification chamber 7, and a clean air chamber 8. The purification chamber 7 is located between the dust hopper 6 and the clean air chamber 8. The dust hopper 6 is located at the bottom and is used to collect dust. The dust hopper 6 has a funnel-shaped structure and protrudes from the bottom of the housing 1. The bottom of the purification chamber 7 is connected to the dust hopper 6, and one side wall of the bottom of the purification chamber 7 is connected to the air inlet duct 2. The clean air chamber 8 is located above the purification chamber 7 and is connected to the purification chamber 7. The bottom side wall of the clean air chamber 8 is connected to the exhaust duct 3, and the top side wall of the clean air chamber 8 is connected to the backflushing air duct. 4. The purification chamber 7 is equipped with multiple air passages 71, and each air passage 71 is equipped with a filter bag 72. Dust-laden exhaust gas enters the purification chamber 7 through the air inlet 2, is filtered and captured by the filter bag 72, and then enters the clean air chamber 8. The back-blowing valve 41 at the top of the clean air chamber 8 is closed, and the gas can only be discharged through the exhaust valve 31 and then through the exhaust passage 3. When the dust on the filter bag 72 accumulates, it is regenerated by back-blowing. The dust blown back falls into the ash hopper 6 and is finally discharged through the ash discharge valve at the bottom of the ash hopper 6.

[0026] Example 3:

[0027] This embodiment, based on the above embodiment, further adds a purification component, such as... Figure 1 and Figure 4 As shown, multiple purification components are provided on both sides of the air duct assembly. The purification components on both sides of the air duct assembly are separated by the air duct assembly, the first maintenance corridor 9, and the second maintenance corridor 10. However, the purification components on the left and right sides share the same air intake duct 2, exhaust duct 3, and backflush air duct 4. The purification principle and backflush principle are the same as those in the above embodiment, and will not be repeated here. The other parts of this embodiment are the same as those in the above embodiment, and will not be repeated here.

[0028] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", and "outer" used to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, the use of terms such as "horizontal" or "vertical" in the description of this utility model does not imply that the component is required to be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] In the description 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 based on the specific circumstances.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A purification device for high-temperature, high-humidity, dust-containing exhaust gas, characterized by comprising: The device includes a housing, within which an air duct assembly is provided. The air duct assembly includes an inlet duct, an exhaust duct, and a backflush duct, arranged sequentially from bottom to top within the housing. A circulating fan is provided between the exhaust duct and the backflush duct, and the circulating fan is located outside the housing. Multiple purification components are provided on at least one side of the air duct assembly. Dust-laden waste gas enters the purification components through the inlet duct for purification and is discharged through the exhaust duct. The gas discharged from the exhaust duct is circulated by the circulating fan into the backflush duct to backflush and remove dust from the purification components. An inlet valve is provided at the location of each purification component in the inlet duct, and an exhaust valve is provided at the location of each purification component in the exhaust duct. A backflush valve is provided at the location of each purification component in the backflush duct.

2. The apparatus for cleaning high-temperature, high-humidity, dust-containing exhaust gas according to claim 1, wherein The purification assembly includes a dust hopper, a purification chamber, and a clean air chamber. The purification chamber is located between the dust hopper and the clean air chamber. The dust hopper is located at the bottom and is used to collect dust. The bottom of the purification chamber is connected to the dust hopper, and the bottom side wall of the purification chamber is connected to the air inlet. The clean air chamber is connected to the purification chamber, and the bottom side wall of the clean air chamber is connected to the exhaust duct. The top side wall of the clean air chamber is connected to the backflushing air duct.

3. The apparatus for cleaning high-temperature, high-humidity, dust-containing exhaust gas according to claim 2, wherein The purification chamber is provided with multiple air passages, and each air passage is provided with a filter bag.

4. The apparatus for cleaning high-temperature, high-humidity, dust-containing exhaust gas according to claim 3, wherein Multiple purification components are installed on both sides of the airway assembly.

5. The apparatus for cleaning high-temperature, high-humidity, dust-containing exhaust gas according to claim 1, wherein The housing contains a first maintenance corridor located above the air intake.

6. The apparatus for cleaning high-temperature, high-humidity, dust-containing exhaust gas according to claim 1, wherein A second maintenance corridor is provided inside the housing above the exhaust duct.

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