Condensation-proof high-temperature gas filtering device

Abstract

The utility model belongs to filter equipment technical field relates to a high temperature gas filter device of anti -condensation, including container body, back flushing subassembly and back flushing gas storage tank, the container body includes the clean gas part and dust containing gas part who arranges up and down, and intercommunication, back flushing subassembly includes the pressure -sustaining ring pipe of setting in the container body outer periphery, and along the even interval distribution of pressure -sustaining ring pipe circumferential direction, and with the multiple back flushing pipes of container body inside intercommunication, back flushing gas storage tank connects pressure -sustaining ring pipe, and back flushing gas storage tank is equipped with heating subassembly. The utility model discloses through the design of back flushing gas storage tank heating subassembly, can solve the condensation problem of coking gas on the filter element surface of filter module, through the design of pressure -sustaining ring pipe, can improve the integration, reduce the equipment floor area, can improve the evenness of back flushing gas distribution again.

Description

Technical Field

[0001] This utility model belongs to the field of filtration equipment technology, specifically relating to a high-temperature gas filtration device that prevents condensation. Background Technology

[0002] In high-temperature coal coking and FCC (catalytic cracking) processes, flue gas temperatures can reach as high as 700℃. For example, the filter bricks used in patent CN221131483U can filter dust as small as 25 microns. However, during high-temperature coal coking, the temperature is heated to over 950℃ and then filtered. In the high-temperature and humid environment of 500-600℃, coking gases easily form low-melting-point substances, which deposit and agglomerate in the low-speed zone of the flue gas filter, gradually forming hard lumps that clog the filter brick pores and critical components, significantly reducing the lifespan of the filtration equipment. Patent CN221131483U addresses this by introducing a separate high-temperature gas to maintain a high-temperature environment in the container. However, this patent has the following problems:

[0003] 1. Even if high-temperature gas is introduced to maintain a high temperature environment in the container, the backflushing gas is at a lower ambient temperature. When it is backflushed onto the surface of the filter brick, the surface temperature of the filter brick drops. When it falls below the dew point of the coking gas, the coking gas will condense on the surface of the filter brick, thereby clogging the filter brick's filtration channels and reducing the product's lifespan.

[0004] 2. To achieve the purpose of backflushing, a separate backflushing gas tank is set up. The backflushing gas tank delivers backflushing gas into the container through the backflushing pipe assembly. Depending on the amount of backflushing gas, there may be uneven backflushing gas pressure in each backflushing pipe, which will affect the backflushing effect of some filter elements, thereby shortening the operation and maintenance cycle and reducing the overall service life. Utility Model Content

[0005] The purpose of this invention is to address the defects and shortcomings in the existing technology by designing a high-temperature gas filtration device that prevents condensation.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a high-temperature gas filtration device for preventing condensation, comprising:

[0007] The container body includes a clean gas section and a dust-containing gas section arranged vertically and communicating with each other.

[0008] The backflush assembly includes a pressure-holding ring tube sleeved on the outer periphery of the container body, and multiple backflush tubes evenly spaced along the circumferential direction of the pressure-holding ring tube and communicating with the interior of the container body.

[0009] A backflush gas storage tank is connected to a pressure-holding ring pipe and is equipped with a heating component.

[0010] Preferably, the clean gas section and the dust-laden gas section are connected to a gas outlet and a gas inlet, respectively.

[0011] Preferably, a tube sheet is provided between the clean gas section and the dust-laden gas section, and one end of the plurality of backflush pipes is connected to a pressure-holding ring pipe, while the other end enters from the top of the clean gas section and sends the backflush gas into the dust-laden gas section through the tube sheet.

[0012] Preferably, the dust-laden gas section is provided with multiple filter modules, and the ends of the multiple backflush pipes away from the pressure-holding ring pipe are respectively provided with multiple filter modules.

[0013] Preferably, a connecting pipe is provided between the backflush gas storage tank and the pressure-holding ring pipe.

[0014] After adopting the above technical solution, the high-temperature gas filtration device for preventing condensation provided by this utility model has the following beneficial effects:

[0015] (1) This utility model integrates the heating component into the backflush gas storage tank to heat the backflush gas, which enables the backflush gas to be at a higher temperature during backflushing, thus solving the problem of coking gas condensing on the surface of the filter element of the filter module. At the same time, it eliminates the need for a separate high-temperature gas delivery pipeline, greatly simplifying the complexity of the system and reducing the cost of the equipment.

[0016] (2) By setting a pressure-holding ring pipe between the backflush pipe and the backflush gas storage tank, this utility model can reduce the overall footprint of the equipment on the one hand, and greatly improve the consistency / uniformity of the gas pressure on the filter element surface of the filter module on the other hand, thereby extending the maintenance cycle of the product and increasing the service life of the product. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a high-temperature gas filtration device for preventing condensation according to the present invention.

[0018] The components include: container body 1, clean gas section 11, dusty gas section 12, gas outlet 13, gas inlet 14, tube sheet 15, backflush assembly 2, pressure holding ring pipe 21, backflush pipe 22, backflush gas storage tank 3, heating assembly 31, and connecting pipe 32. Detailed Implementation

[0019] The present invention will now be described in further clear and complete detail with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. 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.

[0020] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0021] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. 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 need not be further discussed in subsequent drawings.

[0022] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0023] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0024] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0025] This utility model discloses a high-temperature gas filtration device for preventing condensation, such as... Figure 1 As shown, the system includes a container body 1, a backflush assembly 2, and a backflush gas storage tank 3. The container body 1 includes a clean gas section 11 and a dust-laden gas section 12 arranged vertically and interconnected. A tube sheet 15 is provided between the clean gas section 11 and the dust-laden gas section 12. Specifically, a gas outlet 13 is provided on one side of the clean gas section 11, and a gas inlet 14 is provided below one side of the dust-laden gas section 12. Multiple filter modules are provided inside the dust-laden gas section 12, and a discharge port is provided at the bottom. In use, the dust-laden gas enters the dust-laden gas section 12 through the gas inlet 14, is filtered by the filter modules, enters the clean gas section 11 through the through holes on the tube sheet 15, and is discharged from the gas outlet 13.

[0026] The backflush assembly 2 includes a pressure-holding ring tube 21 sleeved on the outer periphery of the container body 1, and multiple backflush tubes 22 evenly spaced along the circumference of the pressure-holding ring tube 21 and connected to the interior of the container body 1. Specifically, one end of each of the multiple backflush tubes 22 is connected to the pressure-holding ring tube 21, and the other end enters from the top of the clean gas section 11 and sends backflush gas into the dust-laden gas section 12 through the tube plate 15. This end is correspondingly set with multiple filter modules in the dust-laden gas section 12. Specifically, the end of the backflush tube 22 away from the pressure-holding ring tube 21 achieves backflush by blowing air into the venturi tube.

[0027] The backflush gas storage tank 3 is connected to the pressure-holding ring pipe 21 via a connecting pipe 32, which is used to supply backflush gas to the pressure-holding ring pipe 21. The backflush gas storage tank 3 is equipped with a heating component 31 for heating the backflush gas. During operation, the heated backflush gas enters the pressure-holding ring pipe 21 through the connecting pipe 32. After the backflush gas reaches the required pressure, the valve of the backflush pipe 22 is opened, and the backflush gas is blown into the container body through the backflush pipe 22. As described above, the problem of uneven gas pressure distribution is solved by the gas distribution of the pressure-holding ring pipe 21. By providing high-temperature backflush gas to the filter module, the dust layer clogging the filter module can be blown off and discharged from the outlet. At the same time, high-temperature backflush solves the problem of filter gas condensation, effectively extending the service life of the filter system.

[0028] In summary, the high-temperature gas filtration device for preventing condensation provided by this utility model has advantages such as large gas storage capacity, uniform backflushing distribution, good backflushing effect, high integration, optimized layout, reduced space occupation, and reduced equipment cost. It has great market value and is worthy of widespread promotion and application.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-temperature gas filtration device for preventing condensation, characterized in that, include: The container body (1) includes a clean gas section (11) and a dust-containing gas section (12) arranged vertically and interconnected. Backflush assembly (2), the backflush assembly (2) includes a pressure-holding ring tube (21) sleeved on the outer periphery of the container body (1), and multiple backflush tubes (22) evenly spaced along the circumferential direction of the pressure-holding ring tube (21) and connected to the interior of the container body (1). A backflush gas storage tank (3) is connected to a pressure-holding ring pipe (21), and the backflush gas storage tank (3) is equipped with a heating component (31). A connecting pipe (32) is provided between the backflush gas storage tank (3) and the pressure-holding ring pipe (21) for supplying backflush gas to the pressure-holding ring pipe (21). A tube sheet (15) is provided between the clean gas section (11) and the dust-laden gas section (12). One end of each of the multiple backflush pipes (22) is connected to a pressure-holding ring pipe (21), and the other end enters from the top of the clean gas section (11) and sends backflush gas into the dust-laden gas section (12) through the tube sheet (15). This end is provided in correspondence with each of the multiple filter modules in the dust-laden gas section (12).

2. The high-temperature gas filtration device for preventing condensation according to claim 1, characterized in that: The clean gas section (11) and the dust-laden gas section (12) are respectively connected to the gas outlet (13) and the gas inlet (14).

3. The high-temperature gas filtration device for preventing condensation according to claim 1, characterized in that: Multiple filter modules are provided in the dust-laden gas section (12), and the ends of the multiple backflush pipes (22) away from the pressure-holding ring pipe (21) are respectively set with the multiple filter modules one by one.

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