Dehumidifying and dedusting device and dehumidifying and dedusting method

Abstract

The present application relates to air pollution particle control technical field, especially to a kind of dehumidification dust removal device and dehumidification dust removal method.The device includes filter cartridge and louvre flow guide device arranged annularly around the filter cartridge by inside and outside sequentially, the top of the filter cartridge is provided with clean gas outlet, the components of the louvre flow guide device include hoop beam and flow guide vane, wherein the flow guide vane is arranged around the filter cartridge, and the upper and lower ends of the flow guide vane are limited as cylindrical by the hoop beam, and there is gap between adjacent two flow guide vanes;Hook-shaped water collecting tank is located between the filter cartridge and the louvre flow guide device, and the inner wall of the hook-shaped water collecting tank is hydrophilic coating, for trapping moisture in the moisture and dust-containing gas.The dehumidification dust removal device of the present application can effectively dehumidify and remove dust, and the dehumidification rate reaches more than 50%, and the dust removal rate reaches more than 99%.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of atmospheric pollution particle control, in particular to a dehumidification and dust removal device and a dehumidification and dust removal method, and more particularly to a dehumidification and dust removal device and a dehumidification and dust removal method required for treatment of high-humidity unorganized dust generated in the operation process of a crusher, a screening machine and other equipment. BACKGROUND

[0002] In the operation process of a crusher, a screening machine and other equipment, due to the positive pressure environment of the internal space of the equipment, a certain amount of dust is discharged from the discharge port along with the gas, causing regional environmental pollution. Such dust often contains a high humidity, for example, when a coal crusher is used to crush lignite, the moisture content of the coal dust generated can be more than 30%. The treatment of such high-humidity dust has become a new industry demand. The dust pollution of this type is of an intermittent type, with small gas volume and large variation in dust concentration. At present, a dry filter cartridge dust remover is mostly used. The filter cartridge dust remover is based on a pleated filter cartridge structure, significantly improves the filtration area per unit space, and has the characteristics of high treatment efficiency, high integration, small size, light weight and flexible arrangement, and gradually becomes the mainstream technical equipment for treatment of such pollution. However, for high-humidity dust-containing gas, the filter cartridge dust remover shows certain inadaptability. The main reason is that the mud cake formed by the wet and ash blocks the filter gap, thereby rapidly reducing the performance of the dust remover. For treatment of high-humidity dust-containing gas, most of the filter cartridge dust removers are optimized in the following ways: (1) using a PTFE super-hydrophobic filter core; and (2) heating the dust-containing gas to vaporize the liquid droplets in the dust-containing gas. However, the above ways still have certain disadvantages. When a high-performance PTFE super-hydrophobic filter core is used, the service life of the filter core can be significantly shortened by the high-humidity gas, resulting in high one-time cost and use cost of the filter cartridge dust remover. When the dust-containing gas is heated, great energy consumption is generated, and safety hazards are also caused. SUMMARY

[0003] The present application aims at the deficiencies in the prior art that the treatment of high-humidity dust-containing gas by using a PTFE super-hydrophobic filter core or heating the dust-containing gas increases the cost and causes safety hazards, and thus proposes a dehumidification and dust removal device and a dehumidification and dust removal method. The dehumidification and dust removal device is provided with a filter cartridge and a louver guide device from inside to outside in sequence, and a guide vane is arranged in the inside annular of the louver guide device. The guide vanes have gaps therebetween, so that the high-humidity dust-containing gas forms a rotating flow field when passing through the guide vanes. Meanwhile, a hook-shaped water collecting groove is arranged on the inner side of the louver guide device, so that the rotating flow field is folded multiple times by the hook-shaped water collecting groove with a hydrophilic coating on the inner wall, and then flows down along the hook-shaped water collecting groove under the action of gravity, thereby effectively separating the moisture from the high-humidity dust-containing gas, creating favorable conditions for subsequent filter cartridge dust removal, prolonging the service life of the filter cartridge and reducing the operation cost.

[0004] In order to achieve the above object, the present application provides a dehumidifying and dedusting device, which comprises a filter cylinder and a louvered flow guide device arranged around the filter cylinder, the filter cylinder is provided with a clean gas outlet at the top, the louvered flow guide device comprises a hoop beam and flow guide blades, the flow guide blades are arranged around the filter cylinder, the upper and lower ends of the flow guide blades are limited to a cylindrical shape by the hoop beam, and a gap is formed between two adjacent flow guide blades; a hook-shaped water collecting groove is arranged between the filter cylinder and the louvered flow guide device, and the inner wall of the hook-shaped water collecting groove is provided with a hydrophilic coating for capturing moisture in the humid and dusty gas.

[0005] Preferably, the included angle a between the flow guide blade and the hoop beam is 30-60°, more preferably 40-50°.

[0006] Preferably, the device further comprises louvered vertical columns, which are arranged at equal intervals inside the louvered flow guide device.

[0007] Preferably, the hydrophilic coating is nano-silicon dioxide.

[0008] Preferably, the number of louvered vertical columns is 4-8.

[0009] Preferably, the upper and lower ends of the louvered vertical columns are detachably connected with the upper and lower top covers of the filter cylinder, respectively.

[0010] Preferably, the louvered vertical columns are connected with the hook-shaped water collecting groove.

[0011] Preferably, the material of the flow guide blade is stainless steel or wear-resistant engineering plastic.

[0012] The present application provides a dehumidifying and dedusting method, which is implemented in the above-mentioned device, and the method comprises the following steps: introducing the humid and dusty gas into the louvered flow guide device, forming a rotating flow field through the flow guide blades, and entering the hook-shaped water collecting groove tangentially to capture the moisture in the humid and dusty gas, the dehumidified gas continues to be introduced into the filter cylinder for dedusting, and then is discharged from the clean gas outlet.

[0013] Preferably, the relative humidity of the humid and dusty gas is 40-100%.

[0014] Preferably, the flow rate of the humid and dusty gas is 2000-40000 m 3 / h.

[0015] Through the above technical solution, the dehumidifying and dedusting device provided by the present application has at least the following beneficial effects:

[0016] (1) In the present application, the high-humidity dust-containing gas forms a rotating airflow after passing through the louver guide vane, and then passes through the hook-shaped water collecting groove with a hydrophilic coating on the inner wall multiple times, under the action of centrifugal force, small droplets in the gas are captured, and under the action of gravity, they flow down along the hook-shaped water collecting groove, creating favorable conditions for the subsequent filter cartridge dust removal, which can prolong the service life of the filter cartridge. At the same time, the water collecting scheme provided by the present application does not depend on external energy input, reducing operating costs;

[0017] (2) In the preferred case, the included angle between the guide vane and the circular tangent of the ring beam is adjusted to 40-50° to ensure that the airflow forms the best rotating flow field after passing through the louver guide vane, providing favorable conditions for capturing small droplets in the gas.

[0018] (3) In the present application, in the preferred case, nano-silicon dioxide is brushed on the windward side (inner wall) of the hook-shaped water collecting groove as a hydrophilic coating, which is more conducive to capturing small droplets in the gas. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a sectional view of the dehumidifying and dust-removing device described in Embodiment 1 of the present application;

[0020] Figure 2 is an enlarged partial top view of the dehumidifying and dust-removing device described in Embodiment 1 of the present application;

[0021] Figure 3 is an enlarged schematic view of the hook-shaped water collecting groove of the dehumidifying and dust-removing device described in Embodiment 1 of the present application.

[0022] REFERENCE NUMERALS

[0023] 1, filter cartridge; 2, hook-shaped water collecting groove; 3, louver guide device; 4, clean gas outlet; 5, ring beam; 6, louver stand; 7, guide vane. DETAILED DESCRIPTION

[0024] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present application, and are not intended to limit the present application.

[0025] The endpoints of the ranges and any values disclosed herein are not limited to the precise values stated. The endpoints of the ranges and the values are approximate values and should be understood to include values approximately the same as the stated values. For ranges, the endpoints are included in the ranges, and the ranges are inclusive of the single values therein. For values, the value includes approximately the same value.

[0026] In the present application, the louver flow guide device is combined with the hook-shaped water collecting groove with the inner wall (windward side) coated with a hydrophilic coating, so that the humid and dusty gas forms a rotating flow field in the louver flow guide device. Due to the rotating flow field having a rotating turbulent flow effect, the gas forming the rotating flow field is further deflected in the hook-shaped water collecting groove, and the liquid droplets in the gas are captured under the action of centrifugal force and gravity, thereby realizing efficient dehumidification of high-humidity and dusty gas, solving the limitation of high humidity on the performance and efficiency of filter cartridge dust collector, and achieving the purposes of reducing cost and being safe and reliable.

[0027] The present application provides a dehumidification and dust removal device in the first aspect, as shown in the figure. Figure 1 The device comprises a filter cartridge 1 and a louver flow guide device 3 arranged annularly around the filter cartridge 1, the top of the filter cartridge 1 is provided with a clean gas outlet 4, the components of the louver flow guide device 3 include a ring beam 5 and a flow guide blade 7, wherein the flow guide blades 7 are arranged around the filter cartridge 1, and the upper and lower ends of the flow guide blades 7 are limited to a cylindrical shape by the ring beam 5, and there is a gap between adjacent two flow guide blades 7; a hook-shaped water collecting groove 2 is located between the filter cartridge 1 and the louver flow guide device 3, and the inner wall of the hook-shaped water collecting groove 2 is a hydrophilic coating for capturing moisture in the humid and dusty gas.

[0028] In the present application, the filter cartridge 1 is a PDFE (polytetrafluoroethylene) filter cartridge dust removal filter in the art.

[0029] In the present application, the ring beam 5 can be a conventional choice in the art as long as it can limit and support the flow guide blades 7.

[0030] In the present application, the flow guide blades 7 can be a conventional choice in the art, specifically, they can be single-plate flat or single-plate arc-shaped. The material of the flow guide blades 7 can be stainless steel or wear-resistant engineering plastic.

[0031] In the specific embodiment, the flow guide blades 7 are arranged in a circle around the filter cartridge 1, and then the upper and lower ends of the flow guide blades 7 are limited to a cylindrical shape by the ring beam 5, and there is a gap between the flow guide blades 7, which is the inlet of the humid and dusty gas, and the humid and dusty gas enters in the tangential direction after passing through the flow guide blades 7 to form a rotating gas flow.

[0032] In the present application, in the specific embodiment, an acute angle α is formed between the flow guide blades 7 and the circular tangent of the ring beam 5. In order to ensure that the gas flow forms the best rotating flow field after passing through the louver flow guide blades and provide more favorable conditions for capturing small liquid droplets in the gas, in the preferred case, the acute angle α is 30-60°, more preferably 40-50°, for example 40°, 45° or 50°.

[0033] In the present application, the shutter column 6 can be a cylindrical or square column, which is made of stainless steel. In order to serve as a support component and framework of the shutter flow guide device 3, the shutter column 6 is arranged between the flow guide vanes 7, and the upper and lower ends thereof are connected to the upper cover 8 and the lower cover 9 of the filter cartridge 1, respectively. Preferably, the upper and lower ends of the shutter column 6 are detachably connected to the upper cover 8 and the lower cover 9 of the filter cartridge 1, respectively, for example, by bolts. More preferably, 3-10 flow guide vanes 7 are arranged between two shutter columns 6. Further preferably, the number of shutter columns 6 is 4-8.

[0034] In the present application, the profile of the hook-shaped water collecting groove 2 is hook-shaped, which is designed to make the tangential circular motion of the wet and dusty gas change direction again, and the small droplets in the gas are captured by the hook-shaped water collecting groove and flow down along the hook-shaped water collecting groove under the action of gravity. Specifically, the hook-shaped water collecting groove 2 is made of stainless steel.

[0035] In the present application, in the specific embodiment, the profile of the hook-shaped water collecting groove is composed of three parts: long (a), wide (b), and hook (c). In the preferred embodiment, the ratio of the lengths of a, b, and c is 3-8:2-3:1, for example, 3:3:1, 3:2:1, 4:2:1, 5:3:1, 6:3:1, or 8:2:1.

[0036] In the present application, in the specific embodiment, the hook-shaped water collecting groove 2 and the shutter column 6 can be connected by welding.

[0037] In the present application, in order to improve the efficiency of capturing droplets, in the preferred embodiment, the hydrophilic coating is a nano-silicon dioxide hydrophilic coating.

[0038] In the first embodiment of the dehumidifying and dust removing device of the present application, the device comprises a filter cartridge 1 and a shutter flow guide device 3 arranged annularly around the filter cartridge 1, which are arranged in sequence from inside to outside. The top of the filter cartridge 1 is provided with a clean gas outlet 4. The components of the shutter flow guide device 3 include a ring beam 5 and flow guide vanes 7, wherein the flow guide vanes 7 are arranged around the filter cartridge 1, and the upper and lower ends of the flow guide vanes 7 are limited to a cylindrical shape by the ring beam 5, and there is a gap between two adjacent flow guide vanes 7. A hook-shaped water collecting groove 2 is arranged between the filter cartridge 1 and the shutter flow guide device 3, and the inner wall of the hook-shaped water collecting groove 2 is provided with a hydrophilic coating for capturing moisture in the wet and dusty gas.

[0039] In the second embodiment of the dehumidifying and dust-removing device, the device comprises a filter cylinder 1 and a louvered flow guide device 3 arranged annularly around the filter cylinder 1, the top of the filter cylinder 1 is provided with a clean gas outlet 4, the components of the louvered flow guide device 3 include a ring beam 5 and flow guide blades 7, wherein the flow guide blades 7 are arranged around the filter cylinder 1, and the upper and lower ends of the flow guide blades 7 are limited to a cylindrical shape by the ring beam 5, and there is a gap between adjacent two flow guide blades 7; a hook-shaped water collecting groove 2 is located between the filter cylinder 1 and the louvered flow guide device 3, and the inner wall of the hook-shaped water collecting groove 2 is a hydrophilic coating for capturing moisture in the humid and dusty gas; the included angle α between the flow guide blades 7 and the circular tangent of the ring beam 5 is 30-60°, preferably 40-50°.

[0040] In the third embodiment of the dehumidifying and dust-removing device, the device comprises a filter cylinder 1 and a louvered flow guide device 3 arranged annularly around the filter cylinder 1, the top of the filter cylinder 1 is provided with a clean gas outlet 4, the components of the louvered flow guide device 3 include a ring beam 5 and flow guide blades 7, wherein the flow guide blades 7 are arranged around the filter cylinder 1, and the upper and lower ends of the flow guide blades 7 are limited to a cylindrical shape by the ring beam 5, and there is a gap between adjacent two flow guide blades 7; a hook-shaped water collecting groove 2 is located between the filter cylinder 1 and the louvered flow guide device 3, and the inner wall of the hook-shaped water collecting groove 2 is a hydrophilic coating for capturing moisture in the humid and dusty gas; the included angle α between the flow guide blades 7 and the circular tangent of the ring beam 5 is 30-60°, preferably 40-50°; the device further comprises a louvered column 6, which is arranged at equal intervals inside the louvered flow guide device 3.

[0041] In the fourth embodiment of the dehumidifying and dust-removing device, the device comprises a filter cylinder 1 and a louvered flow guide device 3 arranged annularly around the filter cylinder 1, the top of the filter cylinder 1 is provided with a clean gas outlet 4, the components of the louvered flow guide device 3 include a ring beam 5 and flow guide blades 7, wherein the flow guide blades 7 are arranged around the filter cylinder 1, and the upper and lower ends of the flow guide blades 7 are limited to a cylindrical shape by the ring beam 5, and there is a gap between adjacent two flow guide blades 7; a hook-shaped water collecting groove 2 is located between the filter cylinder 1 and the louvered flow guide device 3, and the inner wall of the hook-shaped water collecting groove 2 is a hydrophilic coating for capturing moisture in the humid and dusty gas; the included angle α between the flow guide blades 7 and the circular tangent of the ring beam 5 is 30-60°, preferably 40-50°; the device further comprises a louvered column 6, which is arranged at equal intervals inside the louvered flow guide device 3; the hydrophilic coating is nano silicon dioxide.

[0042] A second aspect of the present invention provides a dehumidification and dust removal method, which is implemented in the aforementioned device. The method includes: introducing a humid and dust-laden gas into the louvered flow guiding device 3, forming a rotating flow field through the guide vanes 7, and entering the hook-shaped water collection tank 2 tangentially along the louvered column 6 to capture moisture in the humid and dust-laden gas; the dehumidified gas is then introduced into the filter cartridge 1 for dust removal, and finally discharged from the clean gas outlet 4.

[0043] In the method described in this invention, in a specific embodiment, the relative moisture content of the humid and dusty gas is 40-100%, for example, it can be 40%, 50%, 60%, 70% or 90%.

[0044] In the method described in this invention, in a specific embodiment, the flow rate of the humid and dusty gas is 2000-40000 m³ / h. 3 / h, for example, can be 3000m 3 / h, 5000m 3 / h、20000m 3 / h、30000m 3 / h or 40000m 3 / h.

[0045] The dehumidification and dust removal device and method of the present invention will be described in detail below through embodiments, but the scope of protection of the present invention is not limited thereto.

[0046] Example 1

[0047] A dehumidification and dust removal device, such as Figure 1 As shown, the device includes a filter cartridge 1, a hook-shaped water collection tank 2, and a louvered flow guiding device 3 arranged sequentially from the inside out. The top of the filter cartridge 1 has a clean gas outlet 4. The louvered flow guiding device 3 comprises a ring beam 5, a louvered column 6, and flow guiding blades 7. Both the louvered column 6 and the flow guiding blades 7 are made of stainless steel. The flow guiding blades 7 are arranged around the filter cartridge 1, and the ring beam 5 limits the upper and lower ends of the flow guiding blades 7 into a cylindrical shape. There are gaps between the flow guiding blades 7, and the angle α between the flow guiding blades 7 and the circular tangent of the ring beam 5 is 45 degrees. °The louvered pillars 6 are placed between the guide vanes 7, and five guide vanes 7 are arranged between two louvered pillars 6, for a total of six louvered pillars 6. The upper and lower ends of the louvered pillars 6 are detachably connected to the upper top cover 8 and the lower top cover 9 of the filter cartridge 1, respectively. The hook-shaped water collection tank 2 is connected to the louvered pillars 6 and is used to collect droplets in the humid and dusty gas. The cross-sectional view of the hook-shaped water collection tank is composed of three parts: length a, width b, and hook c. The ratio of the lengths of a, b, and c is 6:3:1. The inner wall of the hook-shaped water collection tank 2 is coated with a hydrophilic coating, which is nano-silica.

[0048] 10000m 3 The moisture content is 80% and the dust content is 300 mg / m³. 3 Moist and dusty gas is fed into the dehumidification and dust removal device described in Example 1 for treatment. First, the gas is introduced through the gap between the guide vanes 7. After passing through the guide vanes 7, the gas forms a rotating flow field and enters the hook-shaped water collection tank 2 tangentially along the louvered column 6. After the rotating flow field passes through the hook-shaped water collection tank multiple times, the droplets in the gas flow down the hook-shaped water collection tank under the action of centrifugal force and gravity, completing the capture of moisture in the moist and dusty gas. The dehumidified gas continues to be fed into the filter cartridge 1 for dust removal, and then discharged from the clean gas outlet 4. Testing showed that the moisture content of the gas discharged from the clean gas outlet 4 was 35%, and the dust content was 3 mg / m³. 3 Calculations show that the dehumidification rate is 56.25% and the dust removal rate is 99%.

[0049] Example 2

[0050] The device is implemented according to Embodiment 1, except that the angle α between the guide vane 7 and the circular tangent of the ring beam 5 is 30°. ° The length ratio of a, b, and c is 3:3:1. (The last part, "6000m," appears to be a separate, unrelated sentence fragment.) 3 The moisture content is 75% and the dust content is 200 mg / m³. 3 Moist and dusty gas was passed into the dehumidification and dust removal device described in Example 2 for treatment, and the treated gas was discharged from the clean gas outlet 4. Testing showed that the moisture content of the gas discharged from the clean gas outlet 4 was 35%, and the dust content was 1.5 mg / m³. 3 Calculations show that the dehumidification rate is 53.33% and the dust removal rate is 99.25%.

[0051] Example 3

[0052] The device is implemented according to Embodiment 1, except that the angle α between the guide vane 7 and the circular tangent of the ring beam 5 is 60°. °, the ratio of the lengths of the a, the b and the c is 8:2:1. 20000m 3 / h of humidity content and 100mg / m 3 of dust content is introduced into the dehumidifying and dedusting device of Example 3 for treatment, and the treated gas is discharged from the clean gas outlet 4. It is detected that the humidity content of the gas discharged from the clean gas outlet 4 is 45%, and the dust content is 1mg / m 3 . It is calculated that the dehumidification rate is 52.63%, and the dedusting rate is 99%.

[0053] Comparative Example 1

[0054] The device is implemented according to Example 1, except that the hook-shaped water collecting tank 2 is replaced by an L-shaped water collecting tank. 400m 3 / h of humidity content and 250mg / m 3 of dust content is introduced into the dehumidifying and dedusting device of Comparative Example 1 for treatment, and the treated gas is discharged from the clean gas outlet 4. It is detected that the humidity content of the gas discharged from the clean gas outlet 4 is 55%, and the dust content is 15mg / m 3 . It is calculated that the dehumidification rate is 35.29%, and the dedusting rate is 94%.

[0055] Comparative Example 2

[0056] The device is implemented according to Example 1, except that the nano-silica (hydrophilic coating) is replaced by silicone high-temperature resistant paint (ordinary anti-corrosion coating). 500m 3 / h of humidity content and 200mg / m 3 of dust content is introduced into the dehumidifying and dedusting device of Example 4 for treatment, and the treated gas is discharged from the clean gas outlet 4. It is detected that the humidity content of the gas discharged from the clean gas outlet 4 is 55%, and the dust content is 10.5mg / m 3 . It is calculated that the dehumidification rate is 38.89%, and the dedusting rate is 94.75%.

[0057] According to the results of Examples 1-3 and Comparative Examples 1-2, it can be seen that the dehumidifying and dedusting device according to the present application can effectively dehumidify the high-humidity and high-dust gas, and the dehumidification rate is more than 50%, thereby prolonging the service life of the filter cartridge and creating favorable conditions for subsequent dedusting of the filter cartridge, and the dedusting rate is more than 99%.

[0058] The above are only examples of the present application, and do not limit the patent scope of the present application. Any equivalent transformation or direct or indirect application in other related technical fields based on the content of the present application is also included in the patent protection scope of the present application.

Claims

1. A dehumidifying and dedusting device, characterized in that, The device comprises a filter cartridge (1) and a louver guide device (3) arranged annularly around the filter cartridge (1) arranged in sequence from inside to outside, the top of the filter cartridge (1) is provided with a clean gas outlet (4), the components of the louver guide device (3) include a ring beam (5) and a guide vane (7), Wherein, the guide vanes (7) are arranged around the filter cartridge (1), and the upper and lower ends of the guide vanes (7) are limited to a cylindrical shape by the ring beam (5), and there is a gap between adjacent two guide vanes (7); A hook-shaped water collecting tank (2) is located between the filter cartridge (1) and the louver guide device (3), and the inner wall of the hook-shaped water collecting tank (2) is a hydrophilic coating for capturing moisture in the wet and dusty gas.

2. The dehumidifying and dedusting device according to claim 1, characterized in that, The included angle α between the guide vane (7) and the circular tangent of the ring beam (5) is 30-60°.

3. The dehumidifying and dedusting device according to claim 2, characterized in that, The included angle α between the guide vane (7) and the circular tangent of the ring beam (5) is 40-50°.

4. The dehumidifying and dedusting device according to claim 1 or 2, characterized in that, The device further comprises a louver stand column (6), which is arranged at equal intervals inside the louver guide device (3).

5. The dehumidifying and dedusting device according to claim 1, wherein The hydrophilic coating is nano silicon dioxide.

6. The dehumidifying and dedusting device according to claim 4, characterized in that, The number of louver stand columns (6) is 4-8.

7. The dehumidifying and dedusting device according to claim 4, characterized in that, The upper and lower ends of the louver stand column (6) are respectively detachably connected with the upper top cover (8) and the lower top cover (9) of the filter cartridge (1).

8. The dehumidifying and dedusting device according to claim 4, characterized in that, The louver stand column (6) is connected with the hook-shaped water collecting tank (2).

9. The dehumidifying and dedusting device according to claim 1, wherein The material of the guide vane (7) is stainless steel or wear-resistant engineering plastic.

10. A method of dehumidifying and dedusting, characterized by, The method is implemented in the device of any one of claims 1-9, the method comprises: passing the wet and dusty gas into the louver guide device (3), forming a rotating flow field through the guide vanes (7), and tangentially entering the hook-shaped water collecting tank (2) for capturing moisture in the wet and dusty gas, the dehumidified gas continues to pass into the filter cartridge (1) for dust removal, and then is discharged from the clean gas outlet (4).

11. The method of claim 10, wherein, The relative humidity of the wet and dusty gas is 40-100%.

12. The method of claim 10, wherein, The flow rate of the moisture-containing dust-containing gas is 2000-40000 m 3 / h.

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