CN112495064B - Horizontal cyclone sand remover for shale gas - Google Patents
Horizontal cyclone sand remover for shale gas Download PDFInfo
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- CN112495064B CN112495064B CN202011523601.2A CN202011523601A CN112495064B CN 112495064 B CN112495064 B CN 112495064B CN 202011523601 A CN202011523601 A CN 202011523601A CN 112495064 B CN112495064 B CN 112495064B
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- 239000004576 sand Substances 0.000 title claims description 56
- 239000007788 liquid Substances 0.000 claims abstract description 61
- 238000000926 separation method Methods 0.000 claims abstract description 60
- 230000007246 mechanism Effects 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 74
- 238000005192 partition Methods 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 description 26
- 230000005484 gravity Effects 0.000 description 11
- 239000007787 solid Substances 0.000 description 7
- 238000001914 filtration Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000011010 flushing procedure Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/02—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
- B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Cyclones (AREA)
Abstract
The invention belongs to the technical field of shale gas desanding and dewatering, and particularly relates to a horizontal cyclone desander for shale gas. The technical scheme is as follows: a horizontal cyclone desander for shale gas comprises a horizontal cylinder, wherein one side of the horizontal cylinder is connected with a separation tower, the other side of the horizontal cylinder is provided with a medium outlet, a plurality of cyclone mechanisms are connected in the separation tower, the separation tower is provided with a medium inlet, and the medium inlet is communicated with the cyclone mechanisms; the bottom of the horizontal cylinder is connected with a liquid collecting bag; the horizontal type barrel is characterized in that a high-position baffle and a low-position baffle are arranged in the horizontal type barrel at intervals, the high-position baffle is sealed with the top of the horizontal type barrel, and a gap is formed between the low-position baffle and the top of the horizontal type barrel. The horizontal cyclone desander for shale gas provided by the invention has the advantages of high separation precision and reduced equipment damage.
Description
Technical Field
The invention belongs to the technical field of shale gas desanding and dewatering, and particularly relates to a horizontal cyclone desander for shale gas.
Background
The shale gas exploitation is generally performed by a hydraulic fracturing method, and a large amount of water mixed with silt and a small amount of chemical substances are injected into a well during exploitation. The main component of the sand is 30-100 meshes of ceramsite, the ceramsite is large in quantity, high in hardness and large in sand adding amount per well, if the ceramsite and the sand are not separated, serious erosion is generated on downstream equipment and pipelines, the safe and stable operation of a system is affected, and therefore effective sand removal is very important.
The existing shale gas desanding and dewatering process generally adopts two stages: in the first stage, a sand remover is adopted for coarse filtration, the pressure is high (26MPa), the flow rate is high, and coarse gravel in the fluid is separated; and in the second stage, the gas-liquid separator is adopted for fine filtration, the pressure is low (8.5MPa) and the flow rate is low, and fine gravel and water are separated from the fluid, so that the problems of sand removal and water removal are thoroughly solved.
According to the field practice, the prior sand and water removing method has the following defects:
the first stage adopts the desander, needs artifical sand removal after the grit is filled up, but because the desander volume is little, the sand removal activity duration is wayward, and the sand removal operation is frequent, and on-the-spot workman intensity of labour is big.
Secondly, because the water quantity is large, the pressure is high, the desander generally adopts a filtering mode to desalt, the separating element is easy to damage, and the separating element needs to be cleaned after being used for a period of time, and the labor intensity of workers is increased.
And thirdly, the desander and the separator are connected by adopting a pipeline, and because a part of unseparated fine gravel still exists behind the desander, the part of gravel can erode the pipeline between the desander and the separator, and the pipeline is punctured on site, so that safety risk exists.
Fourthly, in order to avoid sand discharge and well closing operation, two common desanders are designed to be mutually standby, so that the aim of sand discharge and well closing is fulfilled, the number of the desanders, valves and instruments is increased, the occupied area is increased, and the investment is increased.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide the horizontal shale gas cyclone sand remover which is high in separation precision and capable of reducing equipment damage.
The technical scheme adopted by the invention is as follows:
a horizontal cyclone desander for shale gas comprises a horizontal cylinder, wherein one side of the horizontal cylinder is connected with a separation tower, the other side of the horizontal cylinder is provided with a medium outlet, a plurality of cyclone mechanisms are connected in the separation tower, the separation tower is provided with a medium inlet, and the medium inlet is communicated with the cyclone mechanisms; the bottom of the horizontal cylinder is connected with a liquid collecting bag; the horizontal type barrel is characterized in that a high-position baffle and a low-position baffle are arranged in the horizontal type barrel at intervals, the high-position baffle is sealed with the top of the horizontal type barrel, and a gap is formed between the low-position baffle and the top of the horizontal type barrel.
Shale gas containing sand and water enters the separation tower through a medium inlet in the middle of the separation tower, and the cyclone mechanism coarsely separates the shale gas. Due to the action of rotational flow centrifugal force and gravity, a large amount of liquid and gravel flow into the liquid collecting bag at the lower part of the horizontal cylinder from the lower opening of the cyclone mechanism, and gas and a small amount of impurities enter the horizontal cylinder. When the gas passes through the high-level baffle and the low-level baffle, the baffle is baffled between the baffles, and then impurities in the gas can be effectively blocked by the low-level baffle and the high-level baffle. Lighter impurities fall into the bottom of the horizontal cylinder under the action of gravity, and clean gas enters the rear end of the horizontal cylinder and is discharged from the medium outlet.
Because the cyclone mechanism can separate a large amount of liquid and gravel, the impurities in the gas entering the horizontal cylinder are less. The high-level baffle and the low-level baffle can fully block impurities in the gas, so that the shale gas can be fully purified by the shale gas separation device, and the separation precision is high.
The gas after the separation of whirlwind mechanism contains less impurity, and impurity can be fully blockked by high-order baffle and low level baffle, has avoided the easy problem of damaging of filter element when adopting the filtration mode degritting. The separation tower is connected to the horizontal cylinder, so that the condition that a pipeline between the sand remover and the separator is easily eroded when the sand remover and the separator are used is avoided.
As a preferable scheme of the invention, the lower part of the liquid collecting bag is provided with a sand discharge port, the liquid collecting bag is positioned below the separation tower, a water baffle is also arranged in the horizontal cylinder and is positioned between the separation tower and the medium outlet, and the bottom of the horizontal cylinder is provided with a water discharge port which is positioned on one side of the water baffle, which is far away from the sand discharge port.
Water and gravel in the horizontal cylinder gradually precipitate and stratify, and lighter water turns over the breakwater, flows out by the outlet, and heavier gravel can be discharged by the mouth of discharging sand in the front portion of horizontal cylinder all the time. Therefore, the present invention can sufficiently separate water and gravel in the gas.
As a preferable scheme of the invention, two clapboards are arranged in the separation tower, the cyclone mechanism is fixed between the two clapboards, and the medium inlet is positioned in the area between the two clapboards on the separation tower. The two clapboards and the cyclone mechanism form a closed space, and the medium inlet is positioned in the area between the two clapboards on the separation tower, so that the shale gas containing water and gravel can completely enter the cyclone mechanism after entering the separation tower from the medium inlet, and the shale gas can be fully separated by the cyclone mechanism.
As the preferred scheme of the invention, the cyclone mechanism comprises an outer cylinder, the outer cylinder is fixed between two partition plates, an inner cylinder is sleeved in the outer cylinder, an inlet pipe is fixed on the inner cylinder, the other end of the inlet pipe extends out of the outer cylinder, a flow deflector is arranged in the inner cylinder, the lower end of the inner cylinder and the lower end of the outer cylinder are both communicated with a horizontal cylinder, the upper end of the inner cylinder is opened, and the upper end of the outer cylinder is sealed; the lower end of the outer cylinder extends to the upper part of the horizontal cylinder body, and the lower end of the inner cylinder extends to the lower part of the horizontal cylinder body. The shale gas containing water and gravel enters the inner cylinder from the inlet pipe, the flow deflector discharges a large amount of liquid and gravel in the shale gas from the lower part of the inner cylinder by utilizing the action of rotational flow, and the shale gas containing a small amount of impurities enters the outer cylinder from the upper part of the inner cylinder. After being discharged from the inner cylinder, a large amount of liquid and gravel are directly discharged into the liquid collecting bag, and the shale gas containing a small amount of impurities is discharged into the horizontal cylinder from the outer cylinder.
In a preferred embodiment of the present invention, the upper end of the outer cylinder has a circular arc shape. The gas is diverted through the arc-shaped top of the outer barrel, so that the gas can enter the outer barrel, and the separation effect is improved.
As a preferable scheme of the invention, a water side liquid level meter and a sand side liquid level meter are installed in the horizontal cylinder, the water side liquid level meter is positioned on one side of the water baffle far away from the sand discharge port, and the sand side liquid level meter is positioned on one side of the water baffle far away from the water discharge port. The water side liquid level meter and the sand side liquid level meter respectively monitor the liquid level of the corresponding side, and after the liquid level reaches a certain height, the water outlet is opened to discharge water.
As a preferable scheme of the invention, a position finder for monitoring the position of the gravel is further installed in the horizontal barrel, and the position finder is positioned on one side of the water baffle, which is far away from the medium outlet. The position finder can monitor the height of grit in the horizontal barrel, and when the grit reached certain height, open row's sand mouth and discharge the grit.
As a preferable scheme of the invention, a recoil pipe is further installed in the horizontal cylinder, the position finder is positioned on one side of the water baffle, which is far away from the medium outlet, the recoil pipe is connected with a recoil pipe joint, and the other end of the recoil pipe joint extends out of the bottom of the horizontal cylinder. The backflushing pipe can backflush the horizontal cylinder body, so that gravel in the horizontal cylinder body is thoroughly discharged.
As a preferable scheme of the invention, a medium outlet of the horizontal cylinder is connected with a wire mesh demister. The wire mesh demister can filter the shale gas excessively, and the cleanliness of the shale gas discharged from the cut-off port to the outlet is guaranteed.
As the preferable scheme of the invention, the two ends of the horizontal cylinder are both fixed with the seal heads, and the seal head close to the medium outlet is provided with the manhole, so that the wire mesh demister is convenient to overhaul and replace.
The invention has the beneficial effects that:
1. the shale gas containing sand and water enters the separation tower through a medium inlet in the middle of the separation tower, and the cyclone mechanism coarsely separates the shale gas. Due to the action of rotational flow centrifugal force and gravity, a large amount of liquid and gravel flow into the liquid collecting bag at the lower part of the horizontal cylinder from the lower opening of the cyclone mechanism, and gas and a small amount of impurities enter the horizontal cylinder. When the gas passes through the high-level baffle and the low-level baffle, the baffle is baffled between the baffles, and then impurities in the gas can be effectively blocked by the low-level baffle and the high-level baffle. Lighter impurities fall into the bottom of the horizontal cylinder under the action of gravity, and clean gas enters the rear end of the horizontal cylinder and is discharged from the medium outlet. Because the cyclone mechanism can separate a large amount of liquid and gravel, the impurities in the gas entering the horizontal cylinder are less. The high-position baffle and the low-position baffle can fully block impurities in the gas, so that the shale gas can be fully purified by the shale gas purification device, and the separation precision is high.
2. The gas after the separation of the cyclone mechanism contains less impurities, and the impurities can be fully blocked by the high-level baffle and the low-level baffle, so that the problem that the filter element is easy to damage when a filtering mode is adopted for sand removal is avoided. The separation tower is connected to the horizontal cylinder, so that the condition that a pipeline between the sand remover and the separator is easily eroded when the sand remover and the separator are used is avoided.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the structure of the separation column and the cyclone mechanism.
In the figure, 1-horizontal cylinder; 2-a separation column; 3-a cyclone mechanism; 4-liquid collecting bag; 5-a water baffle; 6-back flushing the pipe; 7-wire mesh demister; 8-sealing the end; 11-a medium outlet; 12-high baffle; 13-low level baffle; 14-a sand discharge port; 15-a water outlet; 16-a water side level gauge; 17-sand side level gauge; 18-a position finder; 21-a media inlet; 22-a separator; 31-an outer barrel; 32-an inner cylinder; 33-an inlet tube; 34-a flow deflector; 61-recoil pipe joint; 81-manhole.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1, the horizontal cyclone desander for shale gas in the embodiment comprises a horizontal cylinder 1, wherein one side of the horizontal cylinder 1 is connected with a separation tower 2, the other side of the horizontal cylinder 1 is provided with a medium outlet 11, a plurality of cyclone mechanisms 3 are connected in the separation tower 2, the separation tower 2 is provided with a medium inlet 21, and the medium inlet 21 is communicated with the cyclone mechanisms 3; the bottom of the horizontal cylinder 1 is connected with a liquid collecting bag 4; high-position baffles 12 and low-position baffles 13 are arranged in the horizontal cylinder 1 at intervals, the high-position baffles 12 are sealed with the top of the horizontal cylinder 1, and a gap is formed between the low-position baffles 13 and the top of the horizontal cylinder 1.
Shale gas containing sand and water enters the separation tower 2 through a medium inlet 21 in the middle of the separation tower 2, and the cyclone mechanism 3 coarsely separates the shale gas. Due to the action of rotational flow centrifugal force and gravity, a large amount of liquid and gravel flow into the liquid collecting bag 4 at the lower part of the horizontal cylinder 1 from the lower opening of the cyclone mechanism 3, and gas and a small amount of impurities enter the horizontal cylinder 1. When the gas passes through the high-level baffle plate 12 and the low-level baffle plate 13, the gas is baffled between the baffle plates, and then impurities in the gas can be effectively blocked by the low-level baffle plate 13 and the high-level baffle plate 12. Lighter impurities fall into the bottom of the horizontal cylinder 1 under the action of gravity, and clean gas enters the rear end of the horizontal cylinder 1 and is discharged from the medium outlet 11.
Since the cyclone mechanism 3 can separate a large amount of liquid and gravel, the impurities in the gas entering the horizontal cylinder 1 are less. The high-position baffle plate 12 and the low-position baffle plate 13 can fully block impurities in the gas, so that the shale gas can be fully purified, and the separation precision is high.
The gas separated by the cyclone mechanism 3 contains less impurities, and the impurities can be fully blocked by the high-level baffle 12 and the low-level baffle 13, so that the problem that a filter element is easy to damage when a filtering mode is adopted for sand removal is avoided. The separation tower 2 is connected to the horizontal cylinder 1, so that the condition that a pipeline between a sand remover and a separator is easily eroded when the sand remover and the separator are used is avoided.
In order to separate water from gravel, a sand discharge port 14 is formed in the lower portion of the liquid collecting bag 4, the liquid collecting bag 4 is located below the separation tower 2, a water baffle 5 is further arranged in the horizontal cylinder 1, the water baffle 5 is located between the separation tower 2 and the medium outlet 11, a water outlet 15 is formed in the bottom of the horizontal cylinder 1, and the water outlet 15 is located on one side, away from the sand discharge port 14, of the water baffle 5.
Water and gravel in the horizontal cylinder 1 are gradually settled and layered, lighter water turns over the water baffle 5 and flows out from the water outlet 15, and heavier gravel is always in the front part of the horizontal cylinder 1 and can be discharged from the sand outlet 14. Therefore, the present invention can sufficiently separate water and gravel in the gas.
As shown in fig. 2, two partition plates 22 are arranged in the separation tower 2, the cyclone mechanism 3 is fixed between the two partition plates 22, and the medium inlet 21 is located in the area between the two partition plates 22 on the separation tower 2. The two partition plates 22 and the cyclone mechanism 3 form a closed space, and the medium inlet 21 is positioned in the area between the two partition plates 22 on the separation tower 2, so that the shale gas containing water and gravel can completely enter the cyclone mechanism 3 after entering the separation tower 2 from the medium inlet 21, and the shale gas can be fully separated by the cyclone mechanism 3.
Furthermore, the cyclone mechanism 3 comprises an outer cylinder 31, the outer cylinder 31 is fixed between the two partition plates 22, an inner cylinder 32 is sleeved in the outer cylinder 31, an inlet pipe 33 is fixed on the inner cylinder 32, the other end of the inlet pipe 33 extends out of the outer cylinder 31, a flow deflector 34 is arranged in the inner cylinder 32, the lower end of the inner cylinder 32 and the lower end of the outer cylinder 31 are both communicated with the horizontal cylinder 1, the upper end of the inner cylinder 32 is open, and the upper end of the outer cylinder 31 is sealed; the lower end of the outer cylinder 31 extends to the upper part of the horizontal cylinder 1, and the lower end of the inner cylinder 32 extends to the lower part of the horizontal cylinder 1. The shale gas containing water and gravel enters the inner cylinder 32 from the inlet pipe 33, the flow deflector 34 discharges a large amount of liquid and gravel in the shale gas from the lower part of the inner cylinder 32 by the action of rotational flow, and the shale gas containing a small amount of impurities enters the outer cylinder 31 through the upper part of the inner cylinder 32. After being discharged from the inner cylinder 32, a large amount of liquid and gravel are directly discharged into the liquid collecting bag 4, and the shale gas containing a small amount of impurities is discharged into the horizontal cylinder 1 from the outer cylinder 31.
The upper end of the outer cylinder 31 is shaped like a circular arc. The gas is diverted through the circular arc-shaped top of the outer cylinder 31 so that the gas can enter the outer cylinder 31, improving the separation effect.
In order to monitor the liquid level conveniently, a water side liquid level meter 16 and a sand side liquid level meter 17 are installed in the horizontal barrel 1, the water side liquid level meter 16 is located on one side, away from the sand discharge port 14, of the water baffle 5, and the sand side liquid level meter 17 is located on one side, away from the water discharge port 15, of the water baffle 5. The water side liquid level meter 16 and the sand side liquid level meter 17 respectively monitor the liquid level of the corresponding side, and after the liquid level reaches a certain height, the water outlet 15 is opened to discharge water.
In order to conveniently monitor the height of the gravel, a position finder 18 for monitoring the position of the gravel is further installed in the horizontal cylinder body 1, and the position finder 18 is located on the side, away from the medium outlet 11, of the water baffle 5. The position finder 18 can monitor the height of the gravel in the horizontal barrel 1 and open the sand outlet 14 to discharge the gravel when the gravel reaches a certain height.
Furthermore, a recoil pipe 6 is further installed in the horizontal cylinder 1, the position finder 18 is located on one side, away from the medium outlet 11, of the water baffle 5, a connector of the recoil pipe 6 is connected to the recoil pipe 6, and the other end of the connector of the recoil pipe 6 extends out of the bottom of the horizontal cylinder 1. The backflushing pipe 6 can backflush the horizontal cylinder 1, so that gravel in the horizontal cylinder 1 is thoroughly discharged.
Furthermore, a wire mesh demister 7 is connected to the medium outlet 11 of the horizontal cylinder 1. The wire mesh demister 7 can excessively filter the shale gas, and the cleanliness of the shale gas discharged from the cut-off port to the outlet is guaranteed. The horizontal cylinder 1 is provided with two fixed end sockets 8 at two ends, and the end socket 8 close to the medium outlet 11 is provided with a manhole 81, so that the screen demister 7 can be conveniently maintained and replaced.
The working principle of the horizontal cyclone sand remover for shale gas is as follows:
the equipment adopts a horizontal structure, the design pressure is medium pressure (8.5MPa), the length-diameter ratio of the horizontal cylinder 1 is a certain proportion, the left end and the right end of the equipment adopt seal head 8 structures, the equipment is provided with double saddles, and the equipment has simple structure and low manufacturing cost.
A separation tower 2 is arranged above the front end of a horizontal barrel 1, a medium inlet 21 is arranged in the middle of the separation tower 2, a plurality of cyclone mechanisms 3 are arranged inside the separation tower 2, and after the medium passes through the cyclone mechanisms 3, heavy liquid, solid and light gas are separated due to the action of centrifugal force and gravity.
Lighter gas and partial impurity get into inside the horizontal barrel 1 after the cyclone mechanism 3 preliminary separation, and the inside baffle of certain quantity has been evenly distributed along the barrel direction in the horizontal barrel 1, utilizes inertial principle to separate the fluid, simultaneously because the major diameter of horizontal barrel 1 is bigger, can utilize the mode of gravity sedimentation to improve the separation efficiency of fluid.
The upper part of the rear end of the horizontal cylinder body 1 is provided with a medium outlet 11, the separated fluid enters the silk screen demister 7 arranged at the medium outlet 11 for final separation, the separated clean gas flows out from the medium outlet 11, a manhole 81 is arranged on the seal head 8 at the rear end of the equipment, and the silk screen demister 7 is convenient to overhaul and replace.
The rear end in the horizontal cylinder 1 is provided with a water baffle 5, a water side liquid level meter 16 and a water outlet 15 are arranged behind the water baffle 5, solid and liquid are gradually deposited at the bottom of the horizontal cylinder 1, and simultaneously, the liquid and the solid are gradually deposited and layered due to the action of gravity. The lighter water turns over the water guard 5 and enters the space behind the water guard 5, and the water level is controlled by the water level gauge 16 and is discharged through the water outlet 15.
A liquid collecting bag 4 is arranged at the lower part of the front end of the horizontal cylinder 1, a sand discharging port 14 is arranged at the lower part of the liquid collecting bag 4, a position finder 18 and a sand side liquid level meter 17 are arranged behind the liquid collecting bag 4, and heavy liquid and solid separated by cyclone separation, gravity separation and inertia are settled at the bottom of the horizontal cylinder 1. When the height of the solid such as gravel reaches the position of the position finder 18, the sand discharge port 14 can perform sand discharge operation, and the sand side liquid level meter 17 is used for controlling the liquid level to achieve the purpose of sand discharge.
The bottom of the inner side of the horizontal cylinder body 1 is provided with a back flushing pipe 6, a connector of the back flushing pipe 6 is connected from the outside of the device, and after the device is used for a period of time, the back flushing pipe 6 can be used for thorough cleaning.
Wherein, the upper and lower parts of the medium inlet 21 of the separation tower 2 are provided with the clapboards 22 to ensure that the medium can flow into the cyclone, and the medium flows into the inner cylinder 32 of the cyclone from the inlet at the middle part of the cyclone.
The inner cylinder 32 of the cyclone is provided with the flow deflector 34, the flow deflector 34 improves the separation efficiency by utilizing the effect of the rotational flow, and meanwhile, the pressure drop is increased, and the light medium is prevented from flowing out from the bottom of the inner cylinder 32.
The heavier solids and liquids separate from the media due to the swirling flow and gravity and exit through an outlet at the bottom of the inner drum 32.
The lighter gas flows out from the top of the inner cylinder 32, the top of the outer cylinder 31 is in a circular arc shape in order to reduce pressure drop, the gas turns at the top of the inner cylinder 32, flows into the outer cylinder 31 of the cyclone and flows out from the outer cylinder 31 of the cyclone, and the separation of the gas, the solid and the liquid is realized.
The invention is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.
Claims (7)
1. The horizontal cyclone desander of the shale gas is characterized by comprising a horizontal cylinder (1), wherein one side of the horizontal cylinder (1) is connected with a separation tower (2), the other side of the horizontal cylinder (1) is provided with a medium outlet (11), the separation tower (2) is internally connected with a plurality of cyclone mechanisms (3), the separation tower (2) is provided with a medium inlet (21), and the medium inlet (21) is communicated with the cyclone mechanisms (3); the bottom of the horizontal cylinder (1) is connected with a liquid collecting bag (4); high-position baffles (12) and low-position baffles (13) are arranged in the horizontal cylinder (1) at intervals, the high-position baffles (12) are sealed with the top of the horizontal cylinder (1), and a gap is formed between the low-position baffles (13) and the top of the horizontal cylinder (1); the sand discharge port (14) is formed in the lower portion of the liquid collection bag (4), the liquid collection bag (4) is located below the separation tower (2), a water baffle (5) is further arranged in the horizontal cylinder (1), the water baffle (5) is located between the separation tower (2) and the medium outlet (11), a water discharge port (15) is formed in the bottom of the horizontal cylinder (1), and the water discharge port (15) is located on one side, away from the sand discharge port (14), of the water baffle (5); two partition plates (22) are arranged in the separation tower (2), the cyclone mechanism (3) is fixed between the two partition plates (22), and the medium inlet (21) is positioned in the area between the two partition plates (22) on the separation tower (2); the cyclone mechanism (3) comprises an outer cylinder (31), the outer cylinder (31) is fixed between two partition plates (22), an inner cylinder (32) is sleeved in the outer cylinder (31), an inlet pipe (33) is fixed on the inner cylinder (32), the other end of the inlet pipe (33) extends out of the outer cylinder (31), a flow deflector (34) is arranged in the inner cylinder (32), the lower end of the inner cylinder (32) and the lower end of the outer cylinder (31) are communicated with the horizontal cylinder (1), the upper end of the inner cylinder (32) is opened, and the upper end of the outer cylinder (31) is sealed; the lower end of the outer cylinder (31) extends to the upper part of the horizontal cylinder (1), and the lower end of the inner cylinder (32) extends to the lower part of the horizontal cylinder (1).
2. The horizontal cyclone desander for shale gas as claimed in claim 1, wherein the upper end of the outer cylinder (31) is shaped like a circular arc.
3. The horizontal cyclone desander for shale gas as claimed in claim 1, wherein a water side liquid level meter (16) and a sand side liquid level meter (17) are installed in the horizontal barrel (1), the water side liquid level meter (16) is positioned on one side of the water baffle (5) far away from the sand discharge port (14), and the sand side liquid level meter (17) is positioned on one side of the water baffle (5) far away from the water discharge port (15).
4. The horizontal cyclone desander for shale gas as claimed in claim 1, wherein a position detector (18) for monitoring the position of gravel is further installed in the horizontal barrel (1), and the position detector (18) is positioned on the side of the water baffle (5) far away from the medium outlet (11).
5. The horizontal cyclone desander for shale gas as claimed in claim 1, wherein a back flush pipe (6) is further installed in the horizontal cylinder (1), the position finder (18) is located on one side of the water baffle (5) far away from the medium outlet (11), a back flush pipe joint (61) is connected to the back flush pipe (6), and the other end of the back flush pipe joint (61) extends out of the bottom of the horizontal cylinder (1).
6. The horizontal cyclone desander for shale gas as claimed in any one of claims 1 to 5, wherein a wire mesh demister (7) is connected to a medium outlet (11) of the horizontal barrel (1).
7. The horizontal cyclone desander for shale gas as claimed in claim 6, wherein the two ends of the horizontal barrel (1) are both fixed with end sockets (8), and the end socket (8) close to the medium outlet (11) is provided with a manhole (81).
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| Application Number | Priority Date | Filing Date | Title |
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