CN112375589A - Use method of inclined covering pressing electric degassing device - Google Patents
Use method of inclined covering pressing electric degassing device Download PDFInfo
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- CN112375589A CN112375589A CN202110033251.XA CN202110033251A CN112375589A CN 112375589 A CN112375589 A CN 112375589A CN 202110033251 A CN202110033251 A CN 202110033251A CN 112375589 A CN112375589 A CN 112375589A
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- 238000007872 degassing Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000003825 pressing Methods 0.000 title claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 71
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000000926 separation method Methods 0.000 claims abstract description 26
- 230000018044 dehydration Effects 0.000 claims abstract description 22
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 22
- 239000000839 emulsion Substances 0.000 claims description 17
- 238000004891 communication Methods 0.000 claims description 6
- 230000001804 emulsifying effect Effects 0.000 claims description 6
- 238000005485 electric heating Methods 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- 239000010865 sewage Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 238000012899 de-mixing Methods 0.000 claims 2
- 238000011161 development Methods 0.000 abstract description 4
- 238000004880 explosion Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 40
- 239000010779 crude oil Substances 0.000 description 11
- 239000007789 gas Substances 0.000 description 8
- 238000005457 optimization Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000005684 electric field Effects 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011033 desalting Methods 0.000 description 2
- 239000007792 gaseous phase Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000007762 w/o emulsion Substances 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G33/00—Dewatering or demulsification of hydrocarbon oils
- C10G33/02—Dewatering or demulsification of hydrocarbon oils with electrical or magnetic means
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Fluid Mechanics (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Electrostatic Separation (AREA)
- Degasification And Air Bubble Elimination (AREA)
Abstract
The invention relates to the technical field of oilfield development and production, in particular to a use method of an inclined covering pressing electric degassing and overflowing device, which comprises the following steps: the method comprises the following steps: the oil-gas-water mixed liquid enters an oil-gas-water separation cavity for primary separation; step two: after the height of the separated emulsified oil reaches the height of the first overflow weir plate, the emulsified oil enters the emulsified oil cavity through the first liquid inlet by utilizing the height difference; step three: the emulsified oil in the emulsified oil cavity reaches the second liquid inlet by utilizing the height difference and enters the alternating current and direct current dehydration cavity through the second liquid inlet to be dehydrated; step four: after the purified oil dehydrated by the alternating current and direct current dehydration cavity reaches the height of the second overflow weir plate, the purified oil enters the buffer cavity through the third liquid inlet; step five: the purified oil entering the buffer chamber is discharged through the purified oil outlet. The invention can ensure that the liquid level of the alternating current and direct current stripping cavity is always higher than the safe liquid level of the electrode plate, thereby fundamentally eliminating the possibility of explosion and ensuring the safe operation of the alternating current and direct current stripping cavity.
Description
Technical Field
The invention relates to the technical field of oilfield development and production, in particular to a use method of an inclined covering pressing electric degassing and overflowing device.
Background
Crude oil produced from an oil well contains a small amount of solid impurities such as silt and rust, and also contains water due to the presence of groundwater and flooding of the oil field, and salts such as sodium, calcium, magnesium and the like are dissolved in the water. The content of the salt dissolved in the water is related to the geological conditions and the development years of the oil field.
The water content of crude oil not only increases the load of equipment in the processes of storage, transportation and refining, but also increases the fuel consumption at the time of temperature rise, and even causes the scaling or corrosion of equipment and pipelines because the water contains salts. Therefore, the water content of the crude oil is harmless and beneficial. Therefore, the dehydration of crude oil becomes an indispensable link in the development process of oil fields and is always paid attention by people.
After the crude oil is separated by multiple sedimentation, the water content of the crude oil is greatly reduced, and then the water in the crude oil is basically in the form of emulsified water drops. Because of the high viscosity of crude oil, the water-in-oil emulsion has stable state and can not be separated by using a common sedimentation method, and the water is finally gathered, sedimented and separated by depending on the actions of various factors such as chemical substances, electric fields, gravity and the like to destroy the stable state.
The destruction of the stabilized emulsion film by an electric field is an effective method. The working principle of the electric dehydration is as follows: when emulsified liquid drops pass through a high-voltage electric field, water drops in the emulsified liquid drops are inductively charged to form dipoles, the dipoles are linearly arranged in the direction of electric lines, and adjacent water drops are close to, contact and coalesce to be separated by sedimentation through electric attraction. In the electric dehydration process, a proper amount of demulsifier is generally added into the crude oil to break an emulsion membrane and enhance the water drop aggregation capability, namely the electric-chemical desalting and dehydration process.
In the prior art, when crude oil enters a sledge body arranged in parallel with the ground for desalting and dehydrating, the condition of lower liquid level can occur in an electric de-cavity, and when the liquid level of the crude oil is lower than the position of a high-voltage electrode plate, the high-voltage electrode plate is in an exposed state, so that if more flammable and explosive gas exists at the upper part in the electric de-cavity, explosion can be caused. In order to prevent the occurrence of such accidents, a low liquid level safety switch is installed at the top of the electric disconnecting cavity in the prior art, and the starting position of the low liquid level safety switch is set to be higher than the position of the high-voltage electrode plate for monitoring the liquid level reduction condition. However, the method cannot completely eliminate the possibility of explosion, when the low liquid level switch fails or the sensitivity is reduced, the actual position of the liquid level cannot be monitored, and at the moment, if the gas at the upper part of the electric degassing cavity is more, the safe operation of the electric degassing cavity cannot be ensured.
Disclosure of Invention
In order to solve the problems, the invention provides a use method of an inclined covering suppression electric dehydration and gas overflow device, which adopts the means of inclining a sledge body and arranging a separation chamber and an overflow weir plate to dually suppress the liquid level height of an alternating current and direct current dehydration cavity and ensure the operation safety of the alternating current and direct current dehydration cavity.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the use method of the inclined covering and pressing electric degassing and overflowing device comprises a sledge body, wherein a first supporting leg and a second supporting leg are symmetrically arranged at the bottom of the sledge body, and the height of the first supporting leg is higher than that of the second supporting leg; an oil-gas-water separation cavity, an emulsion oil cavity, an alternating current and direct current dehydration cavity and a buffer cavity are arranged in the sledge body, and the oil-gas-water separation cavity is arranged on one side close to the first support leg; the upper part of the oil-gas-water separation cavity is provided with a first liquid inlet, the lower part of the first liquid inlet is provided with a first overflow weir plate, and the oil-gas-water separation cavity is communicated with the emulsion oil cavity through the first liquid inlet; the emulsion oil cavity is provided with a second liquid inlet and is communicated with the alternating current and direct current dehydration cavity through the second liquid inlet; the upper part of the alternating current and direct current de-watering chamber is provided with a third liquid inlet, the lower part of the third liquid inlet is provided with a second overflow weir plate, and the alternating current and direct current de-watering chamber is communicated with the buffer chamber through the third liquid inlet; an electrode plate is arranged in the alternating current and direct current threshing cavity, the height of the second overflow weir plate is higher than that of the electrode plate, and a purified oil outlet is formed in the bottom of the buffer cavity;
the use method of the inclined covering suppressing electric degassing device comprises the following steps:
the method comprises the following steps: the oil-gas-water mixed liquid enters an oil-gas-water separation cavity for primary separation;
step two: after the height of the separated emulsified oil reaches the height of the first overflow weir plate, the emulsified oil enters the emulsified oil cavity through the first liquid inlet by utilizing the height difference;
step three: the emulsified oil in the emulsified oil cavity reaches the second liquid inlet by utilizing the height difference and enters the alternating current and direct current dehydration cavity through the second liquid inlet to be dehydrated;
step four: after the purified oil dehydrated by the alternating current and direct current dehydration cavity reaches the height of the second overflow weir plate, the purified oil enters the buffer cavity through the third liquid inlet;
step five: the purified oil entering the buffer chamber is discharged through the purified oil outlet.
As optimization, the emulsion oil cavity comprises a first inclined section, a second inclined section and a vertical section, the first inclined section is connected with the second inclined section through the vertical section, and the vertical section is provided with an electric heating rod.
As optimization, the first liquid inlet is arranged above the first inclined section of the emulsion oil cavity, and the second liquid inlet is arranged at the tail end of the second inclined section of the emulsion oil cavity.
As optimization, the top of the oil-gas-water separation cavity is provided with a first gas phase communication port, and the top of the buffer cavity is provided with a second gas phase communication port.
As optimization, the bottom of the alternating current and direct current threshing cavity is provided with a sewage discharge outlet and a sand washing water gap.
As optimization, the first overflow weir plate and the second overflow weir plate are arranged in the vertical direction.
The invention has the beneficial effects that: compared with the prior art, the application method of the inclined covering pressing electric degassing and overflowing device has the advantages that the proper height difference between the supporting legs is set, so that the sledge body is inclined properly, meanwhile, the liquid level height of the alternating current and direct current degassing cavity is pressed through the inclined sledge body and the second overflow weir plate, the liquid level height of the alternating current and direct current degassing cavity is always higher than the safe liquid level of the electrode plate, the condition that the electrode plate is exposed due to the fact that the liquid level of the alternating current and direct current degassing cavity is lower is avoided, and the possibility of explosion is fundamentally eliminated; through setting up overflow weir plate and No. two overflow weir plates, can realize the mutual linkage of oil gas water separation chamber liquid level and alternating current and direct current threshing chamber liquid level, make the alternating current and direct current threshing chamber's liquid level more stable, ensured the safe operation in alternating current and direct current threshing chamber.
Drawings
FIG. 1 is a front view of the overall structure of the present invention.
Wherein, 1 sledge body, 2 first supporting legs, 3 second supporting legs, 4 gas-oil-water separation chamber, 5 emulsion oil chamber, 6 alternating current and direct current take off the chamber, 7 cushion chamber, 501 first slope section, 502 second slope section, 503 vertical section, No. 8 inlet, No. 9 overflow weir plate, 10 electric heating rod, No. 11 inlet, No. 12 inlet, No. 13 overflow weir plate, 14 electrode board, 15 first gaseous phase intercommunication mouth, 16 second gaseous phase intercommunication mouth, 17 purified oil export, 18 drain, 19 towards the sand mouth.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the embodiments of the present invention.
As shown in figure 1, the use method of the inclined covering pressing electric degassing and overflowing device comprises a sledge body 1, wherein a first supporting leg 2 and a second supporting leg 3 are symmetrically arranged at the bottom of the sledge body 1, and the height of the first supporting leg 2 is higher than that of the second supporting leg 3; an oil-gas-water separation cavity 4, an emulsion oil cavity 5, an alternating current-direct current dehydration cavity 6 and a buffer cavity 7 are arranged in the sledge body 1, and the oil-gas-water separation cavity 4 is arranged on one side close to the first support leg 2; the upper part of the oil-gas-water separation cavity 4 is provided with a first liquid inlet 8, the lower part of the first liquid inlet 8 is provided with a first overflow weir plate 9, and the oil-gas-water separation cavity 4 is communicated with the emulsion oil cavity 5 through the first liquid inlet 8; the emulsifying oil cavity 5 is provided with a second liquid inlet 11, and the emulsifying oil cavity 5 is communicated with the alternating current and direct current oil removing cavity 6 through the second liquid inlet 11; a third liquid inlet 12 is arranged at the upper part of the alternating current and direct current de-watering chamber 6, a second overflow weir plate 13 is arranged at the lower part of the third liquid inlet 12, and the alternating current and direct current de-watering chamber 6 is communicated with the buffer chamber 7 through the third liquid inlet 12; an electrode plate 14 is arranged in the alternating current and direct current de-watering chamber 6, the height of the second overflow weir plate 13 is higher than that of the electrode plate 14, and a purified oil outlet 17 is arranged at the bottom of the buffer chamber 7;
the use method of the inclined covering suppressing electric degassing device comprises the following steps:
the method comprises the following steps: the oil-gas-water mixed liquid enters an oil-gas-water separation cavity 4 for primary separation;
step two: after the height of the separated emulsified oil reaches the height of the first overflow weir plate 9, the emulsified oil enters the emulsified oil cavity 5 through the first liquid inlet 8 by utilizing the height difference;
step three: the emulsified oil in the emulsified oil cavity 5 reaches the second liquid inlet 11 by utilizing the height difference and enters the alternating current and direct current dehydration cavity 6 through the second liquid inlet 11 for dehydration;
step four: after the purified oil dehydrated by the alternating current and direct current dehydration cavity 6 reaches the height of a second overflow weir plate 13, the purified oil enters the buffer cavity 7 through a third liquid inlet 12;
step five: the cleaned oil entering the buffer chamber 7 is discharged through the cleaned oil outlet 17.
The emulsifying oil cavity 5 comprises a first inclined section 501, a second inclined section 502 and a vertical section 503, the first inclined section 501 and the second inclined section 502 are connected through the vertical section 503, and the vertical section 503 is provided with an electric heating rod 10;
the first liquid inlet 8 is arranged above the first inclined section 501 of the emulsion oil chamber 5, and the second liquid inlet 11 is arranged at the tail end of the second inclined section 502 of the emulsion oil chamber 5.
The top of the oil-gas-water separation cavity 4 is provided with a first gas communication port 15, and the top of the buffer cavity 7 is provided with a second gas communication port 16.
The bottom of the alternating current and direct current threshing cavity 6 is provided with a sewage discharge outlet 18 and a sand washing water gap 19.
The first overflow weir plate 9 and the second overflow weir plate 13 are arranged in the vertical direction.
The application method of the inclined covering suppression electric degassing device can effectively control the liquid level height of the alternating current and direct current degassing cavity 6, so that the liquid level of the alternating current and direct current degassing cavity 6 is always higher than the position of the electrode plate 14, and the safe operation of the alternating current and direct current degassing cavity 6 is guaranteed.
The above embodiments are only specific cases of the present invention, and the protection scope of the present invention includes but is not limited to the product form and style of the above embodiments, and any suitable changes or modifications of the method for using the inclined cover pressed electric degassing device according to the claims of the present invention and those of ordinary skill in the art should fall into the protection scope of the present invention.
Claims (6)
1. The use method of the inclined covering pressing electric degassing device is characterized in that: the electric degassing and overflowing preventing device comprises a sledge body (1), wherein a first supporting leg (2) and a second supporting leg (3) are symmetrically arranged at the bottom of the sledge body (1), and the height of the first supporting leg (2) is higher than that of the second supporting leg (3); an oil-gas-water separation cavity (4), an emulsion oil cavity (5), an alternating current-direct current dehydration cavity (6) and a buffer cavity (7) are arranged in the sledge body (1), and the oil-gas-water separation cavity (4) is arranged on one side close to the first support leg (2); the upper part of the oil-gas-water separation cavity (4) is provided with a first liquid inlet (8), the lower part of the first liquid inlet (8) is provided with a first overflow weir plate (9), and the oil-gas-water separation cavity (4) is communicated with the emulsion oil cavity (5) through the first liquid inlet (8); the emulsifying oil cavity (5) is provided with a second liquid inlet (11), and the emulsifying oil cavity (5) is communicated with the alternating current and direct current de-oiling cavity (6) through the second liquid inlet (11); a third liquid inlet (12) is formed in the upper part of the alternating current and direct current de-mixing cavity (6), a second overflow weir plate (13) is arranged at the lower part of the third liquid inlet (12), and the alternating current and direct current de-mixing cavity (6) is communicated with the buffer cavity (7) through the third liquid inlet (12); an electrode plate (14) is arranged in the alternating current and direct current de-watering cavity (6), the height of the second overflow weir plate (13) is higher than that of the electrode plate (14), and a purified oil outlet (17) is arranged at the bottom of the buffer cavity (7);
the use method of the inclined covering suppressing electric degassing device comprises the following steps:
the method comprises the following steps: the oil-gas-water mixed liquid enters an oil-gas-water separation cavity (4) for primary separation;
step two: after the height of the separated emulsified oil reaches the height of the first overflow weir plate (9), the emulsified oil enters the emulsified oil cavity (5) through the first liquid inlet (8) by utilizing the height difference;
step three: the emulsified oil in the emulsified oil cavity (5) reaches the second liquid inlet (11) by utilizing the height difference and enters the alternating current and direct current dehydration cavity (6) through the second liquid inlet (11) for dehydration;
step four: purified oil dehydrated by the alternating current and direct current dehydration cavity (6) enters the buffer cavity (7) through the third liquid inlet (12) after reaching the height of the second overflow weir plate (13);
step five: the purified oil entering the buffer chamber (7) is discharged through a purified oil outlet (17).
2. The use method of the inclined cover pressing electric degassing device according to claim 1, characterized in that: the emulsifying oil cavity (5) comprises a first inclined section (501), a second inclined section (502) and a vertical section (503), the first inclined section (501) and the second inclined section (502) are connected through the vertical section (503), and the vertical section (503) is provided with an electric heating rod (10).
3. The use method of the inclined cover pressing electric degassing device according to claim 2, characterized in that: the first liquid inlet (8) is arranged above the first inclined section (501) of the emulsion oil cavity (5), and the second liquid inlet (11) is arranged at the tail end of the second inclined section (502) of the emulsion oil cavity (5).
4. Use of an inclined cover pressed electric degassing apparatus according to any one of claims 1 to 3, characterized in that: the top of the oil-gas-water separation cavity (4) is provided with a first gas phase communication port (15), and the top of the buffer cavity (7) is provided with a second gas phase communication port (16).
5. The inclined cover pressing electric degassing apparatus according to claim 1, wherein: the bottom of the alternating current and direct current dehydration cavity (6) is provided with a sewage draining outlet (18) and a sand washing water port (19).
6. An inclined shrouded pressure electric degassing apparatus according to any one of claims 1, 2, 3 or 5 wherein: the first overflow weir plate (9) and the second overflow weir plate (13) are arranged in the vertical direction.
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| CN202110033251.XA CN112375589B (en) | 2021-01-12 | 2021-01-12 | Use method of inclined covering pressing electric degassing device |
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| CN202110033251.XA CN112375589B (en) | 2021-01-12 | 2021-01-12 | Use method of inclined covering pressing electric degassing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117844522A (en) * | 2024-03-07 | 2024-04-09 | 森诺科技有限公司 | Electromagnetic shale oil efficient dehydration method and integrated device |
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