Device for reducing filtering load of bag filter

Abstract

The utility model provides a device for reducing the filter load of a bag filter, which comprises a box body and a bag filter cone, the box body is arranged above the bag filter cone, the bag filter cone is of a hollow structure and is communicated with the bottom of the box body, a filter bag is arranged in the bag filter cone, the side wall of the box body is communicated with a flue gas inlet, and the box body is of a cylindrical structure. The flue gas inlet faces the tangential direction of the inner wall of the box body, a box body inner cone is arranged in the box body, and the outer wall of the box body inner cone and the inner wall of the box body form a cyclone flow channel. The smoke inlet faces the tangential direction of the inner wall of the box body, smoke rotates in the cyclone flow channel after entering the box body, due to the action of centrifugal force, part of carbon black impacts on the inner wall of the box body and deposits to fall into a cone of the bag filter, 20%-30% of carbon black can be collected, and the remaining carbon black is filtered and collected through the filter bag along with gas. And under the condition of the same filtering area, the production load can be improved or the filtering load of the filter bag is reduced to prolong the service life of the filter bag.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon black production equipment, in particular to a device for reducing the filtering load of a bag filter. Background Art

[0002] Carbon black, also known as carbon black, is a type of amorphous carbon. It is a light, loose and extremely fine black powder with a very large surface area. It is a product of incomplete combustion or thermal decomposition of carbon-containing substances such as coal tar and anthracene oil in the absence of air.

[0003] In the process of producing carbon black, the fuel combustion in the reactor is relatively complex, and the hydrocarbon raw materials are thermally decomposed. The temperature of the carbon black after the combustion furnace can reach 1600-1950℃, generating carbon black flue gas containing carbon black, N2, H2, CO, CO2, etc., and then it needs to be quenched in the quenching section. In the quenching section, atomized water is directly sprayed into the carbon black flue gas for rapid cooling to terminate the carbon black reaction. Since the water spray method is used for direct cooling, the sprayed water absorbs the temperature in the carbon black flue gas and quickly vaporizes. The carbon black flue gas temperature drops to about 260℃ and enters the bag filter to separate the carbon black from the gas. The carbon black is collected and granulated, dried and other processes, and finally enters the product storage tank, and the gas is sent to the power generation workshop. When filtering the gas, carbon black is easy to adhere to the filter bag, reducing the filter efficiency of the filter bag, and the higher the carbon black concentration, the greater the filter resistance of the filter bag. Utility Model Content

[0004] In view of this, an embodiment of the utility model provides a device for reducing the filtering load of a bag filter to eliminate or improve one or more defects existing in the prior art.

[0005] The utility model provides a device for reducing the filtering load of a bag filter, comprising: a box body and a bag filter cone, the box body is arranged above the bag filter cone, the bag filter cone is a hollow structure and is connected with the bottom of the box body, a filter bag is arranged in the bag filter cone, a side wall of the box body is connected with a smoke inlet, the box body is a cylindrical structure, the smoke inlet is oriented toward the tangent direction of the inner wall of the box body, an inner cone of the box body is arranged inside the box body, the outer wall of the inner cone of the box body and the inner wall of the box body form a cyclone flow channel for a mixture of carbon black and gas to pass through.

[0006] In some embodiments of the utility model, the inner cone of the box body is a hollow conical thin-walled structure, and the small end of the inner cone of the box body faces the bag filter cone.

[0007] In some embodiments of the present invention, the filter bag is arranged above the cone in the box.

[0008] In some embodiments of the present invention, a porous flower plate is provided on the top of the box.

[0009] In some embodiments of the present invention, a compressed air blowing device is provided on the top of the box.

[0010] In some embodiments of the present invention, at least two compressed air blowing devices are provided and located on both sides of the box.

[0011] In some embodiments of the present invention, a vibration device is provided on the top of the box.

[0012] In some embodiments of the present invention, a support is provided on the side wall of the bag filter cone.

[0013] In some embodiments of the present invention, a carbon black collection port is provided at the bottom of the bag filter cone.

[0014] A device for reducing the filtering load of a bag filter in an embodiment of the utility model has the following technical effects: the smoke inlet is toward the tangent direction of the inner wall of the box body, and the smoke enters the box body and rotates in the cyclone flow channel. Due to the action of centrifugal force, part of the carbon black hits the inner wall of the box body and settles and falls into the cone of the bag filter. 20% to 30% of the carbon black can be collected, and the remaining carbon black is filtered and collected with the gas through the filter bag. Under the condition of the same filtering area, the production load can be increased or the filtering load of the filter bag can be reduced to extend the service life of the filter bag.

[0015] Additional advantages, purposes, and features of the present invention will be partially described in the following description, and will become partially apparent to those skilled in the art after studying the following, or may be learned from the practice of the present invention. The purposes and other advantages of the present invention can be achieved and obtained by the structures specifically pointed out in the specification and the drawings.

[0016] Those skilled in the art will understand that the purposes and advantages that can be achieved by the present invention are not limited to the above specific description, and the above and other purposes that can be achieved by the present invention will be more clearly understood based on the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of the present application, and do not constitute a limitation of the present invention. The components in the drawings are not drawn to scale, but are only for the purpose of illustrating the principles of the present invention. In order to facilitate the illustration and description of some parts of the present invention, the corresponding parts in the drawings may be enlarged, that is, they may become larger relative to other components in the exemplary device actually manufactured according to the present invention.

[0018] Figure 1 The present invention is a schematic structural diagram of a device for reducing the filtering load of a bag filter in one embodiment of the present invention.

[0019] Figure numerals: 1. porous flower plate; 2. compressed air blowing device; 3. box body; 4. filter bag; 5. cone inside the box body; 6. flue gas inlet; 7. support; 8. bag filter cone. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in combination with the implementation mode and the accompanying drawings. Here, the schematic implementation mode of the utility model and its description are used to explain the utility model, but are not used as a limitation of the utility model.

[0021] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the scheme according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0022] It should be emphasized that the term “include / comprises” when used herein refers to the presence of features, elements, steps or components, but does not exclude the presence or addition of one or more other features, elements, steps or components.

[0023] It should also be noted that, unless otherwise specified, the term “connection” herein may refer not only to a direct connection but also to an indirect connection involving an intermediate.

[0024] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the accompanying drawings, the same reference numerals represent the same or similar components, or the same or similar steps.

[0025] Reference Figure 1 The embodiment of the utility model provides a device for reducing the filtering load of a bag filter, comprising: a box body 3 and a bag filter cone 8, the box body 3 is arranged above the bag filter cone 8, the bag filter cone 8 is a hollow structure and is connected to the bottom of the box body 3, a filter bag 4 is arranged in the bag filter cone 8, the side wall of the box body 3 is connected to a smoke inlet 6, the box body 3 is a cylindrical structure, the smoke inlet 6 is tangential to the inner wall of the box body 3, an inner cone 5 is arranged inside the box body 3, and the outer wall of the inner cone 5 and the inner wall of the box body 3 form a cyclone flow channel for the mixture of carbon black and gas to pass through.

[0026] In the prior art, the flue gas inlet 6 is usually oriented in the radial direction of the box body 3. In this embodiment, the flue gas inlet 6 is oriented in the tangential direction of the inner wall of the box body 3. After the flue gas enters the box body 3, it rotates in the cyclone flow channel. Due to the action of centrifugal force, part of the carbon black hits the inner wall of the box body 3 and settles and falls into the bag filter cone 8. 20% to 30% of the carbon black can be collected, and the remaining carbon black is filtered and collected with the gas through the filter bag 4. Under the condition of the same filtering area, the production load can be increased or the filtering load of the filter bag can be reduced to extend the service life of the filter bag.

[0027] In some embodiments, the inner cone 5 of the box body is a hollow conical thin-walled structure, and the small end of the inner cone 5 of the box body faces the bag filter cone 8.

[0028] In some embodiments, the filter bag 4 is arranged above the inner cone 5 of the box, so that the smoke first passes through the inner cone 5 of the box and then is filtered by the filter bag 4.

[0029] In some embodiments, a porous flower plate 1 is provided on the top of the box body 3, and the porous flower plate 1 is used to discharge the gas after filtering by the filter bag 4.

[0030] In some embodiments, a compressed air blowing device 2 is provided on the top of the box body 3 .

[0031] In some embodiments, at least two compressed air blowing devices 2 are provided and located on both sides of the box body 3. The carbon black has a small particle size and a light specific gravity, and is easily adhered to the filter bag 4, affecting the air permeability of the filter bag 4. After the compressed air blowing device 2 is periodically sprayed and vibrated, the adhered carbon black falls off and enters the bag filter cone 8.

[0032] In some embodiments, a vibration device (not shown) is provided on the top of the box 3, which can periodically knock the box 3 to cause the carbon black adhering to the inner wall of the box 3 to fall off.

[0033] In some embodiments, a support 7 is provided on the side wall of the bag filter cone 8, and the support 7 plays a supporting role to facilitate the connection of the bag filter cone 8 with other devices.

[0034] In some embodiments, a carbon black collecting port is provided at the bottom of the bag filter cone 8 for collecting carbon black or facilitating the carbon black to enter the next process.

[0035] It should be clear that the present invention is not limited to the specific configurations and processes described above and shown in the figures. For the sake of simplicity, a detailed description of the known device for reducing the filter load of the bag filter is omitted here. In the above embodiment, several specific steps are described and shown as examples. However, the device process for reducing the filter load of the bag filter of the present invention is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications and additions, or change the order between the steps after understanding the spirit of the present invention.

[0036] In the present invention, features described and / or illustrated for one embodiment may be used in the same manner or in a similar manner in one or more other embodiments, and / or combined with features of other embodiments or replace features of other embodiments.

[0037] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the embodiments of the utility model may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A device for reducing the filtering load of a bag filter, characterized in that: include: A box body (3) and a bag filter cone (8), wherein the box body (3) is arranged above the bag filter cone (8), the bag filter cone (8) is a hollow structure and is connected to the bottom of the box body (3), a filter bag (4) is arranged inside the bag filter cone (8), a side wall of the box body (3) is connected to a smoke inlet (6), the box body (3) is a cylindrical structure, the smoke inlet (6) faces the tangent direction of the inner wall of the box body (3), an inner cone (5) is arranged inside the box body (3), the outer wall of the inner cone (5) and the inner wall of the box body (3) form a cyclone flow channel for a mixture of carbon black and gas to pass through.

2. The device for reducing the filtering load of a bag filter according to claim 1, characterized in that: The inner cone (5) of the box body is a hollow conical thin-walled structure, and the small end of the inner cone (5) of the box body faces the bag filter cone (8).

3. The device for reducing the filtering load of a bag filter according to claim 1, characterized in that: The filter bag (4) is arranged above the cone (5) inside the box.

4. The device for reducing the filtering load of a bag filter according to claim 1, characterized in that: A porous flower plate (1) is arranged on the top of the box body (3).

5. The device for reducing the filtering load of a bag filter according to claim 1, characterized in that: A compressed air blowing device (2) is provided on the top of the box body (3).

6. The device for reducing the filtering load of a bag filter according to claim 5, characterized in that: At least two compressed air blowing devices (2) are provided and are located on both sides of the box body (3).

7. The device for reducing the filtering load of a bag filter according to claim 1, characterized in that: A vibration device is arranged on the top of the box body (3).

8. The device for reducing the filtering load of a bag filter according to claim 1, characterized in that: A support (7) is provided on the side wall of the bag filter cone (8).

9. The device for reducing the filtering load of a bag filter according to claim 1, characterized in that: A carbon black collection port is provided at the bottom of the bag filter cone (8).

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