CN110420517B - Coalescence filter core structure and filter equipment - Google Patents
Coalescence filter core structure and filter equipment Download PDFInfo
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- CN110420517B CN110420517B CN201910742952.3A CN201910742952A CN110420517B CN 110420517 B CN110420517 B CN 110420517B CN 201910742952 A CN201910742952 A CN 201910742952A CN 110420517 B CN110420517 B CN 110420517B
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- 238000004581 coalescence Methods 0.000 title description 5
- 239000007788 liquid Substances 0.000 claims abstract description 223
- 238000001914 filtration Methods 0.000 claims abstract description 49
- 238000011045 prefiltration Methods 0.000 claims abstract description 23
- 239000012535 impurity Substances 0.000 claims description 23
- 239000000835 fiber Substances 0.000 claims description 13
- 239000012528 membrane Substances 0.000 claims description 13
- 239000002121 nanofiber Substances 0.000 claims description 11
- 239000011148 porous material Substances 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 8
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0002—Casings; Housings; Frame constructions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
Abstract
The application provides a coalescing filter element structure and filter device, include: the bottom end of the first inner framework is provided with at least one internal liquid drainage flow channel and an air inlet, the first inner framework is surrounded to form a space to be filtered, and the space to be filtered is communicated with the air inlet; the first inner framework is sleeved outside the first inner framework in sequence: a pre-filter layer and a liquid collecting layer; the second inner framework is sleeved outside the liquid collecting layer, a gap space is formed between the liquid collecting layer and the second inner framework, and the gap space is communicated with the internal liquid discharge flow channel; the outer framework is sleeved outside the second inner framework, and a coalescing space is formed between the second inner framework and the outer framework; a filter element disposed within the coalescing space; the upper end cover at least plugs the end part of the space to be filtered; the lower end cover is provided with an opening for inserting the first inner framework, and the lower end cover is detachably connected with the bottom end of the first inner framework. The coalescing filter element structure and the filtering device provided by the application can prolong the service life of the coalescing filter element.
Description
Technical Field
The invention relates to the field of gas-liquid filtration, in particular to a coalescing filter element structure and a filtering device.
Background
In long-distance natural gas conveying pipelines, solid and liquid impurities are generally entrained in the natural gas, and the existence of the impurities can endanger the safety of pipeline instruments and compressor units, so that corresponding gas-liquid filtering devices such as coalescing filters are required to be arranged for removing the impurities in the natural gas. The core component of the coalescing filter for removing the tiny liquid drops in the natural gas is a coalescing filter element, the requirement on the filtering precision is high, and the coalescing filter is mainly used for removing liquid drop particles below 1 mu m.
The prior art filter cartridge structure and the filtering device refer to fig. 1 to 3. As shown in fig. 1 to 3, the coalescing filter element 2 is supported by a second inner frame 201, a coalescing layer 203 filter material is wound around the outer side thereof, the coalescing layer 203 filter material is fastened by an outer frame 202, and a drainage layer 204 filter material is further wound around the outer side of the outer frame 202. The upper end cover 22 of the coalescing filter element 2 and the lower end cover 23 of the coalescing filter element 2 are used for sealing the inner framework, the outer framework, the coalescing layer 203 and the two ends of the drain layer 204, so that the dust-containing gas of the liquid can only pass through the coalescing filter element 2 in the radial direction. The mechanism of filtering by adopting the device is as follows: the gas containing liquid drops or solid particles enters from the air inlet pipeline 3 of the filter, then the gas enters from the pores of the coalescing filter element 2 under the action of pressure difference, when the gas passes through the coalescing filter element 2, the liquid drops in the gas are intercepted by the fibers in the filter material of the coalescing layer 203, then the small liquid drops form larger liquid drops in the filter material through collision among the liquid drops or interaction between the liquid drops and the fibers, the larger liquid drops are further moved to the liquid discharge layer 204 and discharged, the discharged liquid is discharged to the outside of the filter through the first liquid discharge pipeline 4, and the clean gas after filtration is discharged from the air discharge pipeline 5 of the filter.
Because the filter precision requirement of the coalescing filter element is higher, the aperture of the coalescing filter element needs to be smaller to meet the requirement. The natural gas in the gas transmission pipeline contains more complex impurities, and the liquid impurities mainly comprise condensate oil, free water and high-viscosity liquid drops such as lubricating oil carried by the gas transmission pipeline after passing through a compressor unit of a gas compression station. Particularly in multiphase flow working conditions, when the working conditions change greatly, the fluctuation of the liquid content and dust content in the gas is caused to be large. When the high-concentration impurity and large-particle-diameter liquid drop working condition is adopted, the treatment capacity of the coalescing filter element in the prior art cannot meet the use requirement, impurities in gas are jammed on the air inlet side of the coalescing filter element, the filter element is blocked, the pressure drop of the filter element is rapidly increased, so that liquid drops captured by the coalescing filter element enter downstream air flow again under the driving of the air flow, the concentration of the liquid drops in the downstream air flow is increased, the filtering efficiency is reduced, and the operation of the filter must be stopped at the moment, and the filter element needs to be replaced in time.
In the prior art, once the pressure drop of the filter element is overlarge, the filter material needs to be replaced. Because the filter material and the end cover are sealed in a glue fixing mode, the whole coalescing filter element needs to be replaced when the filter material is replaced, and the filter element cannot be reused. In addition, because the materials used for the filter element are expensive, if the filter element is frequently replaced, the operation cost is high.
Disclosure of Invention
In view of this, this application provides a coalescence filter core structure and filter equipment, under the higher circumstances of dust content in the liquid, can be to a great extent improve the too fast problem of filter core pressure drop growth, prolonged coalescence filter core's life. The technical scheme provided is as follows:
a coalescing filter element structure comprising: the filter comprises a first inner framework, a second inner framework and a filter body, wherein the first inner framework is provided with a top end and a bottom end which are opposite, at least one internal liquid drainage flow channel is arranged on the bottom end, and a space to be filtered is formed by surrounding the first inner framework; the first inner framework is sleeved outside in sequence: a pre-filter layer for filtering impurities and a liquid-collecting layer for capturing liquid droplets; the second inner framework is sleeved outside the liquid collecting layer, a gap space is formed between the liquid collecting layer and the second inner framework, and the gap space is communicated with the internal liquid draining flow channel; the outer framework is sleeved outside the second inner framework, and a coalescing space is formed between the second inner framework and the outer framework; a filter element disposed within the coalescing space; the upper end cover is arranged at the top end of the outer framework and is matched with the top end of the first inner framework to seal the end part of the space to be filtered; the lower end cover is arranged at the bottom end of the outer framework and detachably connected with the bottom end of the first inner framework, and the lower end cover is provided with an air inlet communicated with the space to be filtered.
As a preferred embodiment, the extending direction of the internal liquid discharge flow passage is inclined with respect to the horizontal plane, and the internal liquid discharge flow passage communicates with the space to be filtered.
As a preferred embodiment, the filter cartridge comprises: the aggregation layer and the liquid draining layer are sequentially sleeved in the aggregation space, the aperture of the aggregation layer is smaller than that of the liquid draining layer, the aggregation layer is provided with a lyophobic channel with lyophobic characteristics, and the liquid draining layer is provided with a lyophile channel with lyophile characteristics;
the liquid drops in the gas can move to the liquid draining layer along the lyophobic channel after being gathered by the coalescing layer, part of the liquid drops which move to the liquid draining layer under the driving of the air flow can be discharged to the outside of the filter element through the pores of the liquid draining layer, and part of the liquid drops can flow along the lyophobic channel.
As a preferred embodiment, the lyophobic channels are provided with a plurality of lyophobic channels, the lyophobic channels are arranged at intervals, a preset inclination angle is formed between the extending direction of the lyophobic channels and the horizontal plane, and liquid drops carried in the gas can move to the liquid draining layer along the preset inclination angle.
As a preferred embodiment, the predetermined inclination angle is 30 ° to 60 °.
As a preferred embodiment, the plurality of lyophilic channels are arranged at intervals, the extending direction of the lyophilic channels is perpendicular to the horizontal direction, and part of the liquid drops transferred to the liquid discharge layer can flow downwards through the lyophilic channels.
As a preferred embodiment, the lyophile channel is specifically a nanofiber membrane, the nanofiber membrane is compounded on the drainage layer to form the lyophile channel, and the diameter of the nanofiber membrane is 0.1-0.5 μm.
As a preferred embodiment, the upper end cover is provided with a groove matched with the top end of the first inner framework, and the lower end cover is in threaded connection with the bottom end of the first inner framework.
As a preferred embodiment, the fiber diameter of the pre-filter layer is 2-15 μm and the fiber diameter of the liquid collecting layer is 15-25 μm.
A filter device having a housing with a hollow cavity, the housing being provided with an exhaust line and an intake line, comprising:
the coalescing filter element structure is arranged in the hollow cavity, and a drainage space is formed between the coalescing filter element structure and the shell;
the first liquid draining pipeline is communicated with the liquid draining space;
wherein, coalescing filter element structure includes: a first inner frame having opposite top and bottom ends, the bottom end being provided with: the first inner framework is surrounded to form a space to be filtered, the space to be filtered is communicated with the air inlet, and the air inlet is communicated with the air inlet pipeline; the first inner framework is sleeved outside in sequence: a pre-filter layer for filtering impurities and a liquid-collecting layer for capturing liquid droplets; the second inner framework is sleeved outside the liquid collecting layer, a gap space is formed between the liquid collecting layer and the second inner framework, and the gap space is communicated with the internal liquid draining flow channel; the outer framework is sleeved outside the second inner framework, and a coalescing space is formed between the second inner framework and the outer framework; a filter element disposed within the coalescing space; the upper end cover is arranged at the top end of the outer framework and at least seals the end part of the space to be filtered; the lower end cover is arranged at the bottom end of the outer framework and is provided with an opening for being inserted into the first inner framework, and the lower end cover is detachably connected with the bottom end of the first inner framework;
a second drain line in communication with the internal drain flow passage;
and the pressure detection unit is used for detecting the pressure parameter of the coalescing filter element structure and is arranged on the exhaust pipeline and the air inlet pipeline. The coalescing filter element structure and the filter device provided by the embodiment of the application have the following advantages and characteristics: when in multiphase flow and the working condition changes greatly, a large number of liquid drops with large particle size and solid particles are carried in the gas. The gas enters the space to be filtered through the gas inlet, sequentially passes through the first inner framework, the pre-filtering layer and the liquid collecting layer for filtering, and then enters the filter element for filtering through the second inner framework and is discharged. In the process, when the gas passes through the pre-filtering layer, the pre-filtering layer can intercept most of solid impurities carried in the gas, so that the filter element is prevented from being blocked by the solid impurities; when passing through the liquid collecting layer, the liquid collecting layer can timely capture liquid drops with large particle sizes, and the captured liquid drops can be timely discharged along an internal liquid discharge flow channel on the bottom end of the first inner framework, so that the influence on subsequent filtration of gas is avoided. Therefore, the concentration of dust and liquid in gas entering the filter element is obviously reduced, so that the problem of too fast increase of the pressure drop of the filter element can be improved to a greater extent, the service life of the filter element is prolonged, and the running cost is reduced.
Further, the filtering device is further provided with a pressure detection unit for detecting pressure parameters of the coalescing filter element structure, and the pressure detection unit is respectively provided with an exhaust pipeline and an air inlet pipeline. When carrying a large amount of, large-particle-diameter liquid drops and solid particles in the gas, once detect the pressure drop increase of coalescence filter core structure, can only dismantle prefilter layer and liquid collecting layer on the first inner skeleton and change on the basis of keeping second inner skeleton filter core and outer skeleton to the frequent problem of filter core change has been avoided.
Specific embodiments of the present application are disclosed in detail below with reference to the following description and drawings, indicating the manner in which the principles of the present application may be employed. It should be understood that the embodiments of the present application are not limited in scope thereby.
Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments in combination with or instead of the features of the other embodiments.
It should be emphasized that the term "comprises/comprising" when used herein is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.
Drawings
FIG. 1 is a schematic illustration of a prior art coalescing filter element filtration device;
FIG. 2 is a schematic view of a coalescing filter element of the prior art;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
fig. 4 is a schematic structural diagram of a filtering device according to an embodiment of the present disclosure;
FIG. 5 is a schematic illustration of a coalescing filter element structure provided in an embodiment of the present application;
FIG. 6 is a cross-sectional view B-B of FIG. 5;
fig. 7 is a schematic view of a first inner skeleton structure according to an embodiment of the present disclosure;
FIG. 8 is a cross-sectional view of C-C of FIG. 7;
FIG. 9 is a schematic view of a coalescing layer structure provided in an embodiment of the present application;
fig. 10 is a schematic view of a liquid draining layer according to an embodiment of the present disclosure.
Reference numerals illustrate:
1. a housing; 2. cartridge/coalescing cartridge; 200. a liquid discharge space; 201. a second inner skeleton; 202. an outer skeleton; 203. a coalescing layer; 203a, lyophobic channels; 204. a liquid discharge layer; 204a, lyophile channels; 210. a space to be filtered; 211. a first inner skeleton; 211a, external threads; 212. a pre-filter layer; 213. a liquid collecting layer; 22. an upper end cap; 23. a lower end cap; 231. an internal drain flow passage; 3. an air intake line; 4. a first drain line; 5. an exhaust line; 6. and a second liquid discharge pipeline.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and the specific embodiments, it being understood that these embodiments are for illustrating the invention only and not for limiting the scope, and that various equivalent modifications of the invention will fall within the scope defined by the present application by those skilled in the art after reading the present invention.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Embodiments of the present application provide a coalescing filter element structure, see fig. 4-7, comprising: a first inner frame 211, the first inner frame 211 having opposite top and bottom ends, the bottom end being provided with: at least one internal drain flow channel 231 and an air inlet, wherein the first inner framework 211 encloses a space 210 to be filtered, and the space 210 to be filtered is communicated with the air inlet; the first inner frame 211 is sequentially sleeved outside: a pre-filter layer 212 for filtering impurities and a liquid-collecting layer 213 for capturing liquid droplets; the second inner skeleton 201 is sleeved outside the liquid collecting layer 213, a gap space is formed between the liquid collecting layer 213 and the second inner skeleton 201, and the gap space is communicated with the internal liquid draining flow channel 231; an outer skeleton 202 sleeved outside the second inner skeleton 201, wherein a coalescing space is formed between the second inner skeleton 201 and the outer skeleton 202; a filter element 2 arranged in said coalescing space; an upper end cover 22 disposed at the top end of the outer frame 202, wherein the upper end cover 22 seals at least the end of the space 210 to be filtered; the lower end cover 23 is arranged at the bottom end of the outer framework 202, the lower end cover 23 is provided with an opening for inserting the first inner framework 211, and the lower end cover 23 is detachably connected with the bottom end of the first inner framework 211.
When in multiphase flow and the working condition changes greatly, a large number of liquid drops with large particle size and solid particles are carried in the gas. The gas enters the space 210 to be filtered through the gas inlet, sequentially passes through the first inner framework 211, the pre-filtering layer 212 and the liquid collecting layer 213 for filtering, and then enters the filter element 2 through the second inner framework 201 for filtering and then is discharged. In the process, when passing through the pre-filtering layer 212, the pre-filtering layer 212 can intercept most of solid impurities entrained in the gas, so that the filter element 2 is prevented from being blocked by the solid impurities; when passing through the liquid collecting layer 213, the liquid collecting layer 213 can timely capture liquid drops with large particle diameters, and the captured liquid drops can be timely discharged along the internal liquid discharge flow channel 231 on the bottom end of the first inner skeleton 211, so that the influence on the subsequent filtration of gas is avoided. Therefore, the concentration of dust and liquid in the gas entering the filter element 2 is obviously reduced, so that the problem that the pressure drop of the filter element 2 increases too fast can be solved to a large extent, the service life of the filter element 2 is prolonged, and the running cost is reduced.
The first inner frame 211 is used to provide support for the pre-filter layer 212 and the liquid collection layer 213. The first inner frame 211 has a longitudinally extending body provided with a through hole along a longitudinal direction thereof for gas circulation. The first inner frame 211 has a cylindrical structure, and the first inner frame 211 encloses a space 210 to be filtered. The pre-filter layer 212 and the liquid collecting layer 213 are sequentially sleeved outside the first inner frame 211. The pre-filter layer 212 is used for filtering out most of solid impurities entrained in the gas, and the liquid collecting layer 213 can timely capture large-particle-size liquid drops in the gas. The prefilter layer 212 and the acquisition layer 213 may be made of materials such as glass fiber, polypropylene, polyester fiber, and metal fiber.
Wherein, the cylindrical structure includes a cylindrical structure, a triangular prism structure, a quadrangular prism structure, etc., including but not limited to this, and for convenience of description, the embodiments of the present application take the cylindrical structure as an example to describe each component by way of example, and those skilled in the art will understand that the cylindrical structure is only an example and not a limitation of the present application.
Referring to fig. 5, 7 and 8, the first inner frame 211 has opposite top and bottom ends, and at least one inner drain channel 231 and an air inlet are disposed on the bottom end, and the air inlet is in communication with the space 210 to be filtered. The gas enters the space 210 to be filtered through the gas inlet, and is sequentially processed through the pre-filtering layer 212 and the liquid collecting layer 213, and the liquid drops captured by the liquid collecting layer 213 can be discharged to the outside of the coalescing filter element structure along the inner liquid discharge flow channel 231. Specifically, the width of the bottom end of the first inner frame 211 is greater than that of the pre-filtering layer 212 and the liquid collecting layer 213, and the liquid captured by the liquid collecting layer 213 falls into the bottom end of the first inner frame 211 under the action of gravity and flows out along the internal liquid drain flow channel 231.
Preferably, the fiber diameter of the pre-filter layer 212 is 2-15 μm and the fiber diameter of the acquisition layer 213 is 15-25 μm. The gas is filtered through the pre-filter layer 212 and the liquid collecting layer 213, and then enters the filter element 2 through the second inner skeleton 201. The pre-filtering layer 212 intercepts solid impurities carried in the gas, the liquid collecting layer 213 can capture large-granularity liquid drops carried in the gas, and then the liquid drops are timely discharged along the internal liquid discharge flow channel 231 on the bottom end of the first inner skeleton 211, so that the gas is prevented from carrying the liquid drops again so as not to influence the subsequent filtering link.
Further, the substantially extending direction of the inner drain flow channel 231 may have an inclined angle with respect to the horizontal plane, and the inner drain flow channel 231 communicates with the space 210 to be filtered. The horizontal plane is taken as an example of the installation direction shown in fig. 4 to 7, and the horizontal plane direction in the embodiment of the application refers to the direction of the coalescing filter element structure in a normal use state, and is not limited to the direction of the filter element structure in the embodiment of the application in other scenes including, but not limited to, use, transportation and the like which may cause the inversion of the structural orientation or the change of the position. The number of the internal drain flow passages 231 is not particularly limited herein.
In this embodiment, the internal drain flow channels 231 are uniformly disposed at the bottom end of the first inner frame 211 in the circumferential direction, and a plurality of the internal drain flow channels 231 are symmetrically distributed, and a plurality of the internal drain flow channels 231 are all communicated with the space 210 to be filtered. The large-sized droplets captured by the liquid collecting layer 213 can be collected into the space 210 to be filtered through the plurality of inner liquid discharge passages 231 and discharged together.
The second inner skeleton 201 and the outer skeleton 202 are sleeved outside the liquid collecting layer 213. Wherein, a gap space is formed between the second inner frame 201 and the liquid collecting layer 213, the gap space is communicated with the inner liquid discharging channel 231, and the liquid drop captured by the liquid collecting layer 213 is first discharged from the inner liquid discharging channel 231 in time under the action of gravity.
The second inner skeleton 201 and the outer skeleton 202 each have a longitudinally extending body, and the bodies are each provided with a through hole along the longitudinal direction thereof, so as to be used for gas circulation. Specifically, the second inner skeleton 201 and the outer skeleton 202 are both in cylindrical structures, and the outer skeleton 202 is sleeved outside the second inner skeleton 201. The second inner frame 201 is configured to provide support for the filter element, a coalescing space is defined between the second inner frame 201 and the outer frame 202, the filter element 2 is located in the coalescing space, and the filter element 2 continues to filter the gas after being treated by the pre-filtering layer 212 and the liquid collecting layer 213.
The upper end cover 22 is disposed at the top end of the outer skeleton 202, and the upper end cover 22, after being matched with the top ends of the outer skeleton 202 and the first inner skeleton 211, can at least seal off the end of the space 210 to be filtered. The lower end cover 23 is arranged at the bottom end of the outer skeleton 202, the lower end cover 23 is provided with an opening for inserting the first inner skeleton 211, and the lower end cover 23 is detachably connected with the bottom end of the first inner skeleton 211.
In this embodiment, the upper end cap 22 is provided with a groove matching with the top end of the first inner frame 211, and the lower end cap 23 and the bottom end of the first inner frame 211 may be connected by a screw structure. Specifically, the upper end of the first inner frame 211 may be inserted into the upper end cover 22 through a groove, the lower end cover 23 is provided with an internal thread structure, and the first inner frame 211 is provided with an external thread 211a structure matched with the internal thread structure. In the disassembly, the upper end cap 22 may be removed, and then the first inner frame 211 may be screwed off from the lower end cap 23 through a screw structure to replace the pre-filter layer 212 and the liquid collecting layer 213.
In this embodiment, the filter element 2 includes: the coalescing layer 203 and the liquid draining layer 204 are sequentially sleeved in the coalescing space, the aperture of the coalescing layer 203 is smaller than that of the liquid draining layer 204, the coalescing layer 203 is provided with a lyophobic channel 203a with lyophobic characteristics, and the liquid draining layer 204 is provided with a lyophile channel 204a with lyophile characteristics. Droplets in the gas can migrate to the liquid draining layer 204 along the lyophobic channel 203a after being gathered by the coalescing layer 203, and part of droplets migrating to the liquid draining layer 204 under the driving of the air flow can be discharged to the outside of the filter element 2 through the pores of the liquid draining layer 204, and part of droplets can flow along the lyophobic channel 204a.
Specifically, the coalescing layer 203 and the drain layer 204 are both disposed between the second inner frame 201 and the outer frame 202. The pre-filtered gas enters the coalescing layer 203 from the through hole on the second inner skeleton 201, the coalescing layer 203 is mainly composed of a material with smaller pore diameter, a material with hydrophilic and oleophilic characteristics is selected, and the smaller fiber diameter can capture the liquid drops with smaller particle diameter carried in the gas and then move to the liquid draining layer 204. Preferably, the coalescing layer 203 is a glass fiber substrate. The drainage layer 204 is made of a material having a larger pore size than the coalescing layer 203 to provide drainage channels for liquid passing through the coalescing layer 203. The drain layer 204 is made of a material with hydrophobic and oleophobic properties, and preferably, the drain layer 204 is made of a needled felt substrate. The liquid droplets discharged through the liquid discharge layer 204 are discharged to the outside through the through holes in the exoskeleton 202 by the gas.
Further, as shown in fig. 9, the coalescing layer 203 is further provided with a plurality of lyophobic channels 203a having lyophobic properties, and the lyophobic channels 203a are spaced apart from each other on the surface of the coalescing layer 203. The lyophobic channel 203a may attach an oleophobic and hydrophobic fiber membrane having a certain width to the glass fiber substrate of the coalescing layer 203 by a thermal fusion method. The lyophobic channel 203a may also be disposed on the glass fiber substrate of the coalescing layer 203 by plasma spraying, surface finishing, or the like.
In general, the coalescing layer 203 can quickly wet the substrate after capturing the droplets, and a plurality of liquid channels are formed in the substrate of the coalescing layer 203, and after the substrate is wetted, the liquid channels are diffused around and connected with each other to form a large liquid area, so that the liquid content in the coalescing layer 203 is increased, and at this time, the liquid is not easy to drain, and the resistance of the filter element is easily increased. According to the embodiment of the application, the lyophobic channels 203a which are distributed at intervals are arranged on the coalescing layer 203 with lyophile characteristics, so that formation of large liquid areas can be prevented, liquid drops can be rapidly discharged out of the coalescing layer 203 through the lyophobic channels 203a, liquid content of the coalescing layer 203 is reduced, gas flow obstruction is reduced, and pressure drop of the filter element is slowly increased. Preferably, the width of the lyophobic channel 203a is 10-20 mm, and the distance between adjacent lyophobic channels 203a is 20-40 mm.
Still further, as shown in fig. 10, the drainage layer 204 is provided with a plurality of lyophilic channels 204a having lyophilic properties, and the plurality of lyophilic channels 204a are spaced apart on the surface of the drainage layer 204. The lyophilic channels 204a may attach a lipophilic hydrophilic fibrous membrane having a certain width to the needled felt substrate of the drainage layer 204 by a thermal fusion method. The lyophilic channels 204a may also be disposed on the needled felt substrate of the drainage layer 204 by plasma spraying, surface finishing, or the like.
In general, when the liquid in the coalescing layer 203 migrates to the drainage layer 204, the liquid cannot enter the drainage layer 204 rapidly due to the hydrophobic and oleophobic properties of the drainage layer 204, so that the liquid accumulates between the coalescing layer 203 and the drainage layer 204, resulting in a liquid film on the surface of the coalescing layer 203, and the pressure drop of the filter element increases. When the gas passes through the liquid film, the liquid film is easily broken, so that the downstream gas liquid content is increased, and the filter element fails to filter. In the embodiment of the present application, the lyophile channels 204a are provided on the lyophobic drain layer 204 at intervals, so that the drain flow path can be formed on the surface of the drain layer 204. Thereby reducing the accumulation of liquid drops between the aggregation layer 203 and the liquid draining layer 204, reducing the formation of a liquid film, effectively avoiding the rapid increase of the pressure drop of the filter element and improving the filtering effect of the filter element. Preferably, the lyophilic channels 204a have a width of 20 to 40mm so as to effectively absorb the liquid film accumulated between the coalescing layer 203 and the drain layer 204, and the distance between adjacent lyophilic channels 204a is 20 to 30mm.
Preferably, the lyophile channel 204a is specifically a nanofiber membrane, the nanofiber membrane is compounded on the drainage layer 204 to form the lyophile channel 204a, and the diameter of the nanofiber membrane is 0.1-0.5 μm. The nanofiber membrane has a large specific surface area and has a strong adsorption capacity for liquid. Thus, the liquid in the coalescing layer 203 can be rapidly absorbed by the nanofiber membrane when being discharged, thereby reducing the formation of a liquid film on the surface of the coalescing layer 203.
In one embodiment, the lyophobic channel 203a has a predetermined inclination angle between its extending direction and the horizontal plane, and the droplets carried in the gas can move to the liquid draining layer 204 along the predetermined inclination angle.
Specifically, the droplets captured in the coalescing layer 203 can be rapidly discharged to the drain layer 204 along the predetermined inclination angle of the lyophobic channel 203a, a part of the liquid entering the drain layer 204 is discharged to the outside of the filter element 2 along the aperture of the drain layer 204 and the through hole of the exoskeleton 202 under the driving action of the air flow, and the other droplet is left downwards along the lyophile channel 204a inside the drain layer 204 and then is discharged to the filter element 2 under the action of the air flow. Preferably, the predetermined inclination angle of the lyophobic channel 203a is 30 ° to 60 °, so that the droplets can be smoothly transferred to the liquid discharge layer 204, and the droplets can be quickly transferred.
In one embodiment, the lyophilic channels 204a extend in a direction perpendicular to the horizontal direction, and a portion of the droplets traveling to the liquid discharge layer 204 can flow downward through the lyophilic channels 204a.
The present application further provides a filtering device, as shown in fig. 4 to 7, the filtering device has a housing 1 with a hollow cavity, the housing 1 is provided with an exhaust pipeline 5 and an air inlet pipeline 3, and the air inlet pipeline is communicated with the air inlet on the first inner skeleton 211. The filtering device includes: the coalescing filter element structure is arranged in the hollow cavity, and a drain space 200 is formed between the coalescing filter element structure and the shell 1; a first drain line 4, the first drain line 4 being in communication with the drain space 200; and a pressure detection unit for detecting a pressure parameter in the space 210 to be filtered.
In particular, the housing 1 of the filtering device has a hollow cavity, and the specific shape of the housing 1 is not limited herein. The housing 1 has opposite closed ends and side walls that enclose between the top and bottom walls of the housing 1. The coalescing filter element structure is arranged in the hollow cavity of the filtering device, and a drainage space 200 is formed between the coalescing filter element structure and the shell 1. The bottom wall of the housing 1 may be provided with a groove that mates with the lower end cover 23 and the first inner skeleton 211 of the coalescing filter element structure, and the coalescing filter element structure is clamped to the bottom wall of the housing 1 through the groove, so as to maintain good stability. A sealing ring may be further disposed between the groove and the first inner frame 211.
The side wall of the shell 1 is provided with an exhaust pipeline 5 and an air inlet pipeline 3, the air inlet pipeline 3 is communicated with an air inlet on the first inner framework 211 of the coalescing filter element structure, and gas can enter the coalescing filter element structure through the air inlet pipeline 3 and the air inlet. The gas filtered by the coalescing filter element structure is discharged to the outside of the filter device by the exhaust pipeline 5, so that subsequent production application is performed. The filter device is further provided with a first liquid draining pipeline 4, the shell 1 is provided with an orifice matched with the first liquid draining pipeline 4, the first liquid draining pipeline 4 is communicated with the liquid draining space 200, and liquid drops filtered out by the coalescing filter element structure enter the liquid draining space 200 under the action of gas and are discharged to the outside of the filter device through the first liquid draining pipeline 4.
The filtration device is also provided with a pressure detection unit for detecting a pressure parameter of the coalescing filter element structure. The pressure detection units may be differential pressure sensors respectively provided on the exhaust line 5 and the intake line 3 of the housing 1. When an increase in pressure drop of the coalescing filter element structure inside the housing 1 is detected, only the pre-filter layer 212 and the liquid collection layer 213 on the first inner frame 211 can be removed and replaced while retaining the second inner frame 201, the filter element 2, and the outer frame 202. Specifically, the upper end cover 22, the lower end cover 23 and the first inner frame 211 are in fit connection, so that the first inner frame 211 can be taken out, and the subsequent filter materials can be replaced, thereby avoiding the frequent replacement of the filter element 2. In this embodiment, the filtering device further includes: a second drain line 6 communicating with the space to be filtered 210, the second drain line 6 communicating with the internal drain flow passage 231, and the pressure detection unit may be provided on the second drain line 6 and/or the intake line 3.
The large-sized droplets intercepted by the liquid collecting layer 213 can enter the second liquid discharge pipe 6 through the inner liquid discharge flow path 231 and then be discharged to the outside of the filtering apparatus. In this embodiment, the internal drain flow channels 231 are uniformly disposed at the bottom end of the first inner frame 211 in the circumferential direction, and a plurality of internal drain flow channels 231 are all communicated with the space 210 to be filtered. The second drain pipe 6 may be disposed at the bottom of the air inlet of the lower end cover 23, and is in communication with the space 210 to be filtered. The liquid droplets captured through the plurality of internal drain channels 231 are collected in the space 210 to be filtered and then discharged together through the second drain pipe 6.
In one embodiment, the second drain line 6 is in communication with the first drain line 4, and valves may be provided on the second drain line 6 and the first drain line 4 to control the draining of the liquid.
For a better understanding of the present application, the operation of the filtering device provided in the present application will be further described below:
the gas with liquid drops enters a space 210 to be filtered of the coalescing filter element structure through the air inlet pipeline 3, and sequentially enters a pre-filtering layer 212 and a liquid collecting layer 213 through the first inner framework 211. The pre-filter layer 212 can intercept most of solid impurities in the gas, and the liquid collecting layer 213 can intercept large-particle-size liquid drops in the gas. The droplets captured by the liquid collecting layer 213 enter the internal liquid discharge channel 231 on the bottom of the first inner frame 211 from the gap space under the action of gravity and the driving action of gas, and are collected by the second liquid discharge pipeline 6 and discharged.
And the gas after prefiltering enters a subsequent filtering link from the clearance space. Flows sequentially through the second endoskeleton 201, coalescing layer 203, drainage layer 204, exoskeleton 202, and then drains to the exterior of the coalescing filter element structure. The coalescing layer 203 is provided with a plurality of lyophobic channels 203a, the lyophobic channels 203 are arranged on the coalescing layer 203 at intervals, and an inclination angle of 30-60 degrees is formed between each lyophobic channel 203a and the horizontal plane. The drain layer 204 is provided with a plurality of lyophilic channels 204a, and a plurality of lyophilic channels 204a are arranged on the drain layer 204 at intervals, and each lyophilic channel 204a is perpendicular to the horizontal direction.
The micro droplets carried in the gas are caught by the fibers of the coalescing layer 203 while passing through the coalescing layer 203, and then rapidly discharged toward the drain layer 204 along the inclined angle of the lyophobic channel 203 a. Part of the liquid entering the liquid draining layer 204 is discharged to the outside of the filter element 2 along the outer surface of the liquid draining layer 204 by the through holes of the outer skeleton 202 under the action of the air flow, and the other part of liquid drops are reserved downwards along the lyophilic channel 204a in the liquid draining layer 204 and then discharged out of the filter element 2 under the action of the air flow. The liquid discharged through the liquid discharge layer 204 enters the liquid discharge space 200, and is then collected by the first liquid discharge pipe 4 and discharged. The filtered gas is discharged from the exhaust pipeline 5 on the filtering device and enters the subsequent production and use.
When a large number of large-sized droplets and solid particles are carried in the gas, once the differential pressure sensor on the intake pipe 3 and the exhaust pipe 5 shows an increase in pressure drop of the coalescing filter element structure, it indicates that the liquid collecting layer 213 and/or the pre-filter layer 212 are severely blocked, and only the pre-filter layer 212 and the liquid collecting layer 213 on the first inner frame 211 are removed and replaced on the basis of retaining the second inner frame 201, the filter element 2 and the outer frame 202.
The coalescing filter element structure and the filter device provided by the application have the following advantages:
(1) The coalescing filter element structure provided by the application is additionally provided with the prefilter element, so that impurities with larger particle sizes in gas can be filtered in advance, the change of impurity concentration in the gas is dealt with, and the captured impurities are timely discharged, so that the dust-containing concentration and the liquid-containing concentration of the gas entering the coalescing filter element are reduced, and the service life of the filter element is prolonged;
(2) According to the coalescing filter element structure, the lyophobic channels are additionally arranged on the coalescing layer, so that the formation of large liquid areas in the coalescing layer can be prevented, the formation of a liquid film is reduced, the liquid content in the filter element is reduced, and the increase of pressure drop is delayed;
(3) According to the coalescing filter element structure, the lyophilic channel is additionally arranged on the liquid discharge layer, so that a liquid film formed at the coalescing layer can be destroyed, liquid is promoted to rapidly enter the liquid discharge layer, and the filtering effect of the filter element is improved;
(4) The application provides a prefilter element convenient to detach, easily change can handle the higher operating mode of liquid or solid impurity concentration in the gas, when the filter core pressure drop appears growing too fast the condition, only need change the filter media on the first inner skeleton can to avoided the filter core to change frequent problem, reduced running cost.
It should be noted that, in the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and to distinguish between similar objects, and there is no order of preference between the two, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the present specification, each embodiment is described in a progressive manner, and the same parts of each embodiment participate in each other, and each embodiment mainly describes differences from other embodiments.
It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The disclosures of all articles and references, including patent applications and publications, are incorporated herein by reference for the purpose of completeness.
Claims (9)
1. A coalescing filter element structure comprising:
a first inner frame having opposite top and bottom ends, the bottom end being provided with: the first inner framework is surrounded to form a space to be filtered, and the space to be filtered is communicated with the air inlet;
the first inner framework is sleeved outside in sequence: a pre-filter layer for filtering impurities and a liquid-collecting layer for capturing liquid droplets;
the second inner framework is sleeved outside the liquid collecting layer, a gap space is formed between the liquid collecting layer and the second inner framework, and the gap space is communicated with the internal liquid draining flow channel;
the outer framework is sleeved outside the second inner framework, and a coalescing space is formed between the second inner framework and the outer framework;
a filter element disposed within the coalescing space;
the upper end cover is arranged at the top end of the outer framework and at least seals the end part of the space to be filtered;
the lower end cover is arranged at the bottom end of the outer framework and is provided with an opening for being inserted into the first inner framework, and the lower end cover is detachably connected with the bottom end of the first inner framework;
the filter cartridge includes: the liquid draining device comprises a coalescing layer with oleophilic and hydrophilic characteristics and a liquid draining layer with hydrophobic and oleophobic characteristics, wherein the coalescing layer and the liquid draining layer are sequentially sleeved in the coalescing space, the pore diameter of the coalescing layer is smaller than that of the liquid draining layer, the coalescing layer is provided with a lyophobic channel with lyophobic characteristics, and the liquid draining layer is provided with a lyophobic channel with lyophobic characteristics;
the liquid drops in the gas can move to the liquid draining layer along the lyophobic channel after being gathered by the coalescing layer, part of the liquid drops which move to the liquid draining layer under the driving of the air flow can be discharged to the outside of the filter element through the pores of the liquid draining layer, and part of the liquid drops can flow along the lyophobic channel.
2. The coalescing filter cartridge structure of claim 1, wherein the interior drain flow passage extends at an oblique angle to the horizontal, the interior drain flow passage being in communication with the space to be filtered.
3. The coalescing filter element structure of claim 1, wherein the lyophobic channels are a plurality of, the lyophobic channels are arranged at intervals, a predetermined inclination angle is arranged between the extending direction of the lyophobic channels and the horizontal plane, and liquid drops carried in the gas can move to the liquid draining layer along the predetermined inclination angle.
4. The coalescing filter element structure of claim 3, wherein the predetermined angle of inclination is between 30 ° and 60 °.
5. The coalescing filter element structure of claim 1, wherein the plurality of lyophilic channels are spaced apart, the lyophilic channels extend in a direction perpendicular to the horizontal direction, and a portion of the liquid droplets migrating to the drainage layer can flow downwardly through the lyophilic channels.
6. The coalescing filter element structure of claim 5, wherein the lyophile channel is specifically a nanofiber membrane, the nanofiber membrane is composited on the drainage layer to form the lyophile channel, and the diameter of the nanofiber membrane is 0.1-0.5 μm.
7. The coalescing filter element structure of claim 1, wherein the upper end cap is provided with a recess that mates with a top end of the first inner frame, and wherein the lower end cap is threadably coupled to a bottom end of the first inner frame.
8. The coalescing filter element structure of claim 1, wherein the pre-filter layer has a fiber diameter of 2-15 μm and the liquid collection layer has a fiber diameter of 15-25 μm.
9. A filter device having a housing with a hollow cavity, the housing being provided with an exhaust line and an intake line, comprising:
the coalescing filter element structure is arranged in the hollow cavity, and a drainage space is formed between the coalescing filter element structure and the shell;
the first liquid draining pipeline is communicated with the liquid draining space;
wherein, coalescing filter element structure includes: a first inner frame having opposite top and bottom ends, the bottom end being provided with: the first inner framework is surrounded to form a space to be filtered, the space to be filtered is communicated with the air inlet, and the air inlet is communicated with the air inlet pipeline; the first inner framework is sleeved outside in sequence: a pre-filter layer for filtering impurities and a liquid-collecting layer for capturing liquid droplets; the second inner framework is sleeved outside the liquid collecting layer, a gap space is formed between the liquid collecting layer and the second inner framework, and the gap space is communicated with the internal liquid draining flow channel; the outer framework is sleeved outside the second inner framework, and a coalescing space is formed between the second inner framework and the outer framework; a filter element disposed within the coalescing space; the upper end cover is arranged at the top end of the outer framework and at least seals the end part of the space to be filtered; the lower end cover is arranged at the bottom end of the outer framework and is provided with an opening for being inserted into the first inner framework, and the lower end cover is detachably connected with the bottom end of the first inner framework;
the filter cartridge includes: the liquid draining device comprises a coalescing layer with oleophilic and hydrophilic characteristics and a liquid draining layer with hydrophobic and oleophobic characteristics, wherein the coalescing layer and the liquid draining layer are sequentially sleeved in the coalescing space, the pore diameter of the coalescing layer is smaller than that of the liquid draining layer, the coalescing layer is provided with a lyophobic channel with lyophobic characteristics, and the liquid draining layer is provided with a lyophobic channel with lyophobic characteristics;
the liquid drops in the gas can move to the liquid draining layer along the lyophobic channel after being gathered by the coalescing layer, part of the liquid drops which move to the liquid draining layer under the drive of the air flow can be discharged to the outside of the filter element through the pores of the liquid draining layer, and part of the liquid drops can flow along the lyophobic channel;
a second drain line in communication with the internal drain flow passage;
and the pressure detection unit is used for detecting the pressure parameter of the coalescing filter element structure and is arranged on the exhaust pipeline and the air inlet pipeline.
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|---|---|---|---|---|
| CN109847490A (en) * | 2019-03-20 | 2019-06-07 | 中国石油大学(北京) | A kind of rigidity gas-liquid Coalescence filter core, preparation method and device |
| CN112957834B (en) * | 2021-03-11 | 2021-11-19 | 中国石油大学(北京) | Switching two-stage coalescence-separation system |
| CN112973359B (en) * | 2021-03-18 | 2022-03-29 | 中国石油大学(北京) | Sectional liquid discharge type combined coalescent filter element |
| CN112973295B (en) * | 2021-03-18 | 2022-03-29 | 中国石油大学(北京) | Coalescence filter core with flowing back function |
| CN115212668B (en) * | 2022-02-22 | 2023-11-07 | 国家管网集团川气东送天然气管道有限公司 | Coalescing filter element and coalescing filter |
| CN114515488B (en) * | 2022-02-22 | 2023-11-10 | 国家管网集团川气东送天然气管道有限公司 | Coalescing filter |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4053290A (en) * | 1976-10-18 | 1977-10-11 | Monsanto Company | Fiber bed separator |
| RU2065317C1 (en) * | 1995-06-07 | 1996-08-20 | Товарищество с ограниченной ответственностью - Предприятие "ГКЛ" | Device for separation of heterophase systems |
| CN102671477A (en) * | 2011-03-12 | 2012-09-19 | 江苏新宏大集团有限公司 | Mixed mounting fiber demister and manufacture method thereof |
| CN103463894A (en) * | 2013-09-24 | 2013-12-25 | 中联煤层气有限责任公司 | Coalescent filter and filter element thereof |
| EP2913090A1 (en) * | 2014-01-27 | 2015-09-02 | Walker Filtration Limited | Purification column |
| CN205850465U (en) * | 2016-06-06 | 2017-01-04 | 常州威肯过滤分离环保技术有限公司 | A kind of efficiently mist of oil separation filter element |
| CN107530612A (en) * | 2015-05-11 | 2018-01-02 | Smc株式会社 | Pneumatic filter and filter cell |
| CN206941549U (en) * | 2017-07-07 | 2018-01-30 | 中海石油环保服务（天津）有限公司 | A kind of Novel surface oil spilling film oil recovery device |
| CN208193949U (en) * | 2018-04-09 | 2018-12-07 | 新乡市胜达过滤净化技术有限公司 | A kind of mist of oil recycling filter core |
| CN109758850A (en) * | 2019-03-12 | 2019-05-17 | 中国石油大学(北京) | Gas-liquid Coalescence filter core with pre-separation function |
| CN210584170U (en) * | 2019-08-13 | 2020-05-22 | 中国石油大学(北京) | Coalescence filter core structure and filter equipment |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070224087A1 (en) * | 2004-07-08 | 2007-09-27 | Zhong Ding | Airborne material collection and detection method and apparatus |
| US9144760B2 (en) * | 2012-07-03 | 2015-09-29 | The University Of Akron | Liquid drainage from coalescing filter medium with drainage channels |
| US10682601B2 (en) * | 2015-08-28 | 2020-06-16 | Cummins Filtration Ip, Inc. | Rotating coalescing element with directed liquid drainage and gas outlet |
-
2019
- 2019-08-13 CN CN201910742952.3A patent/CN110420517B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4053290A (en) * | 1976-10-18 | 1977-10-11 | Monsanto Company | Fiber bed separator |
| RU2065317C1 (en) * | 1995-06-07 | 1996-08-20 | Товарищество с ограниченной ответственностью - Предприятие "ГКЛ" | Device for separation of heterophase systems |
| CN102671477A (en) * | 2011-03-12 | 2012-09-19 | 江苏新宏大集团有限公司 | Mixed mounting fiber demister and manufacture method thereof |
| CN103463894A (en) * | 2013-09-24 | 2013-12-25 | 中联煤层气有限责任公司 | Coalescent filter and filter element thereof |
| EP2913090A1 (en) * | 2014-01-27 | 2015-09-02 | Walker Filtration Limited | Purification column |
| CN107530612A (en) * | 2015-05-11 | 2018-01-02 | Smc株式会社 | Pneumatic filter and filter cell |
| CN205850465U (en) * | 2016-06-06 | 2017-01-04 | 常州威肯过滤分离环保技术有限公司 | A kind of efficiently mist of oil separation filter element |
| CN206941549U (en) * | 2017-07-07 | 2018-01-30 | 中海石油环保服务（天津）有限公司 | A kind of Novel surface oil spilling film oil recovery device |
| CN208193949U (en) * | 2018-04-09 | 2018-12-07 | 新乡市胜达过滤净化技术有限公司 | A kind of mist of oil recycling filter core |
| CN109758850A (en) * | 2019-03-12 | 2019-05-17 | 中国石油大学(北京) | Gas-liquid Coalescence filter core with pre-separation function |
| CN210584170U (en) * | 2019-08-13 | 2020-05-22 | 中国石油大学(北京) | Coalescence filter core structure and filter equipment |
Non-Patent Citations (7)
| Title |
|---|
| Lattice-Boltzmann flow simulation of an oil-in-water emulsion through a coalescing filter: Effects of filter structure;Mino, Yasushi;《CHEMICAL ENGINEERING SCIENCE》;20180228;第177卷;210-217 * |
| The effect of a drainage layer on the saturation of coalescing filters in the filtration process;Chang, Cheng;《CHEMICAL ENGINEERING SCIENCE》;20170331;第160卷;354-361 * |
| 天然气净化用过滤元件性能测定与分析;常程;《石油机械》;20151231;第43卷(第12期);81-85 * |
| 天然气聚结滤芯气液分离性能研究;张昱威;《当代化工》;20150831(第8期);全文 * |
| 纳米纤维素晶体对超滤膜亲水性能的提升研究;白朗明;《给水排水》;20170217;30-35 * |
| 聚结滤芯层数对滤材内液体含量的影响;刘佳霖;《工程热物理学报》;20180430;38(10);2176-2182 * |
| 页岩气水平井固井技术难点分析与对策;刘伟;《石油钻采工艺》;20120531;第34卷(第3期);40-43 * |
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