CN114682397B - Conical liquid-liquid axial centrifugal separator and separation monitoring device - Google Patents
Conical liquid-liquid axial centrifugal separator and separation monitoring device Download PDFInfo
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- CN114682397B CN114682397B CN202210309063.XA CN202210309063A CN114682397B CN 114682397 B CN114682397 B CN 114682397B CN 202210309063 A CN202210309063 A CN 202210309063A CN 114682397 B CN114682397 B CN 114682397B
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- 239000007788 liquid Substances 0.000 title claims abstract description 83
- 238000000926 separation method Methods 0.000 title claims abstract description 35
- 238000012806 monitoring device Methods 0.000 title claims abstract description 13
- 238000003860 storage Methods 0.000 claims abstract description 23
- 238000004062 sedimentation Methods 0.000 claims abstract description 18
- 230000008602 contraction Effects 0.000 claims abstract description 3
- 238000007599 discharging Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 19
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B13/00—Control arrangements specially designed for centrifuges; Programme control of centrifuges
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- Centrifugal Separators (AREA)
Abstract
The invention discloses a conical liquid-liquid axial centrifugal separator and a separation monitoring device. The centrifugal separator comprises a generating separator and an intensified separator; liquid to be separated enters from the bottom of the centrifugal separator and sequentially passes through the generating separator, the conical contraction section and the reinforced separator; the heavy phase liquid is discharged from a heavy phase outlet HPO at the top of the centrifugal separator, and the light phase liquid is discharged from the separator and the enhanced separator respectively. The centrifugal separation monitoring device comprises a heavy phase liquid storage tank, a light phase liquid storage tank, a sedimentation tank A, a sedimentation tank B, a pressure sensor and an equipment monitor. The invention adopts corresponding separators in two separation stages, and can keep higher separation performance in a wider range of inlet flow and oil content; meanwhile, the design of multiple outlets ensures high separation efficiency and low split ratio.
Description
Technical Field
The invention belongs to the technical field of centrifugal separation, and particularly relates to a conical liquid-liquid axial centrifugal separator and a separation monitoring device.
Background
Compared with the traditional gravity separation technology, the centrifugal separation technology has the advantages of small volume, low cost, high separation efficiency, large capacity and the like, and is widely applied in various fields. In industrial production, the gas-liquid and solid-liquid two-phase flow separation can reach higher efficiency, and the liquid-liquid separation is difficult to realize due to the problems of emulsification caused by droplet breakage, small density difference and the like.
The traditional liquid-liquid separator is a device which utilizes the characteristics of density difference and immiscibility of mixed liquid, generates vortex by tangential inlet under high-speed rotation, and separates two liquids due to different centrifugal forces. However, due to the special tangential inlet design of the separator, flow field asymmetry is generated, the shearing force is too large, and liquid drops swing and break to influence the separation efficiency, so that certain limitations exist.
The design of liquid-liquid axial separators is extremely challenging, mainly for several reasons: first, the conventional liquid-liquid axial separator has only one separator and one light phase outlet, and the separation efficiency is low. Secondly, the outlet of the traditional liquid-liquid axial separator is positioned at the top of the separator or positioned at the center of a downstream pipe to be used as an outlet for discharging oil, and the load of a light phase outlet is large. Thirdly, the traditional axial separator has complex separation process and is easy to break liquid drops.
The small-sized conical liquid-liquid axial centrifugal separator can avoid the drop breaking caused by overlarge shearing force by changing the inlet mode, solve the problem that the drop is forced to move inwards due to insufficient vortex degree, further improve the separation efficiency and effectively replace the traditional separator. But to date, few documents are concerned with the research of axial separators for industrial use.
Disclosure of Invention
The invention provides a small-sized conical liquid-liquid axial centrifugal separator and a separation monitoring device aiming at the defects of the prior art.
In one aspect of the invention, a conical liquid-liquid axial centrifugal separator is provided, comprising a generating separator and a reinforcing separator;
liquid to be separated enters from the bottom of the centrifugal separator and sequentially passes through the generating separator, the conical contraction section and the reinforced separator; the heavy phase liquid is discharged from a heavy phase outlet HPO at the top of the centrifugal separator, and the light phase liquid is discharged from the separator and the enhanced separator respectively.
Further, in the further course of this,
the hub of the generating separator is provided with a first light phase outlet LPO1 for discharging light phase liquid;
the hub of the reinforced separator is provided with a second light phase outlet LPO2 and a third light phase outlet LPO3 for discharging light phase liquid.
Further, in the further course of this,
the third light phase outlet LPO3 is higher than the second light phase outlet LPO2 in height, and the diameters of the first light phase outlet LPO1 and the second light phase outlet LPO2 are larger than the diameter of the third light phase outlet LPO 3.
In another aspect, the invention provides a small-sized conical liquid-liquid axial centrifugal separation monitoring device, which is used for performing separation monitoring on the conical liquid-liquid axial centrifugal separator, and comprises the following components:
the liquid outlets of the heavy phase liquid storage tank and the light phase liquid storage tank are mixed to the bottom of the centrifugal separator through pipelines;
a settling tank A and a settling tank B, wherein the first light phase outlet LPO1, the second light phase outlet LPO2 and the separated light phase liquid are input into the settling tank A, and the third light phase outlet LPO3 is input into the settling tank B; the sedimentation tank A is internally provided with a scale, and the flow rate of the light phase liquid is calculated through the change of the volume in unit time;
pressure sensors for monitoring the pressure at the bottom and top of the conical liquid-liquid axial centrifugal separator;
and the equipment monitor is used for recording the whole working process of the conical liquid-liquid axial centrifugal separator.
Further, in the further course of this,
the sedimentation tank A and the sedimentation tank B are communicated with the light phase liquid storage tank; the heavy phase outlet HPO is connected to the heavy phase liquid storage tank.
Further, in the further course of this,
the liquid outlets of the heavy phase liquid storage tank and the light phase liquid storage tank are mixed after passing through the corresponding pump bodies.
Further, in the further course of this,
the liquid outlet of the pump body is provided with a flowmeter.
The invention has the beneficial effects that:
1. the device has the advantages of ingenious structure, novel design, good integrity, strong pertinence, high efficiency and low cost.
2. While the conventional axial separator has only one separator and one light phase outlet, the invention has two separation stages, and the two separators can maintain high separation performance in a large inlet flow and oil content range.
3. The conventional axial separator outlet is located either at the top of the separator or in the center of the downstream pipe as an outlet drain. The novel separator adopts the prior separation of part of the light phase, so that the load of a subsequent light phase outlet can be reduced.
4. The design of multiple outlets ensures high separation efficiency and low split ratio.
5. Can be used for researching the influence of temperature, inlet flow rate and split ratio on the separation performance and pressure drop of the conical axial separator.
6. The use of multiple separators, the upstream separator produces a lower tangential velocity to avoid droplet break up and gradually increases tangential velocity by decreasing the conical cross-sectional area to separate small size droplets upstream.
Drawings
Fig. 1 is a schematic front view of the device of the present invention.
Fig. 2 is a detailed view of part of the invention.
Detailed Description
The invention is further described below with reference to fig. 1 and 2.
In this embodiment, oil is used as light phase liquid, water is used as heavy phase liquid, and the centrifugal separation monitoring device specifically includes:
the bottom of the oil storage tank 12 and the bottom of the water storage tank 7 are respectively connected with an oil pump 13 and a water pump 14 through valves; further, the flowmeter 15 is respectively connected with an oil pump and a water pump, and records the flow; further, the right side of the water storage tank is connected with a water pipe 6 for supplying water, so that the space is enlarged, and the mixing of the water used and supplied is avoided.
And the bottom of the small conical liquid-liquid axial centrifugal separator is respectively connected with the flowmeter through a valve.
And the pressure sensor 3 is connected with the small conical liquid-liquid axial centrifugal separator.
And the equipment monitor 1 is used for macroscopically recording the whole operation process of the small conical liquid-liquid axial centrifugal separator by using a high-speed camera.
And a sedimentation tank.
As shown in fig. 2, the small cone-shaped liquid-liquid axial centrifugal separator includes, in order, a generator separator 18, a cone-shaped pipe 19 (i.e., cone-shaped section), a cylindrical pipe a 20, a reinforcing separator 24, and a cylindrical pipe B26.
The generating separator is provided with a hub 21, a plurality of blades 23 are fixed on the hub, the front edge of the blades is parallel to the axial direction, and the deflection angle is gradually increased; further, the hub of the generator separator has a light phase outlet 17 for oil extraction.
The enhanced separator is constructed similarly to the resulting separator, further having two light phase outlets 22, 25 on the hub of the enhanced separator for oil drainage.
The cylindrical tube 2 terminates in a heavy phase outlet 27 for drainage.
The small cone-shaped liquid-liquid axial centrifugal separator has three Light Phase Outlets (LPO) which are respectively LPO1 (light phase outlet 17), LPO2 (light phase outlet 22) and LPO3 (light phase outlet 25); further, the diameters of LPO1 and LPO2 are larger than the diameter of LPO3 due to the lower downstream oil content.
The sedimentation tank further comprises:
a sedimentation tank A9, wherein the sedimentation tank A is internally provided with a scale 11, and the flow rate of liquid flowing into the sedimentation tank A from the LPO1 and the LPO2 is calculated through the change of the volume in unit time; further, the light oil layer on the upper layer of the sedimentation tank A flows back to the oil storage tank to be recovered; further, a valve may be opened to drain a small amount of water from the bottom of the settling tank a.
And the sedimentation tank B10 is connected with the LPO3, and is a common rectangular container with volume measurement scales.
The cone cross-sectional area design is tapered because wall friction and liquid drainage from LPO1 results in a decrease in tangential velocity in order to maintain or increase tangential velocity.
The pressure sensor is respectively positioned at the upstream of the generating separator and the downstream of the strengthening separator; the pressure sensor is connected with the computer 2, stores all data for subsequent analysis, and can calculate the pressure drop of the small-sized conical liquid-liquid axial centrifugal separator through the data of the computer 2 and the data of the computer.
The hub is designed with a hemispherical tail, so that liquid drops are prevented from being broken due to abrupt speed change.
The blade is of an oval design.
The working process of the centrifugal separation monitoring device comprises the following steps:
(a) Before the test starts, the water storage tank is filled with water, the water storage tank is divided into two parts by the partition plate 8, and water is supplied to the right side by the water pipe.
(b) The test is started, the valve is opened, the oil pump and the water pump are started, oil and water are pumped out of the oil storage tank and the water storage tank, the flow meters are opened to record the flow rates respectively, and the oil and the water are mixed through the T-shaped joint pipe 16 and then enter the small-sized conical liquid-liquid axial centrifugal separator. The mixture enters a generating separator to be accelerated and generate tangential velocity; then enters a conical tube, and oil drops spirally advance; then the oil enters a cylindrical pipe A, the residence time of the oil drops is increased, the cylindrical pipe A and the conical pipe form an upstream separation chamber, and the oil drops flow into a sedimentation tank A from LPO1 and LPO 2; then enters the reinforced separator and the cylindrical pipe B, and oil drops move in the pipe and are discharged from the LPO3 to flow into the sedimentation tank B; water is recovered from the HPO outflow through valve 5 to the left side of the storage tank.
In summary, the invention provides a small-sized conical liquid-liquid axial centrifugal separation monitoring device, which not only optimizes the geometric structure of a traditional liquid-liquid separator, but also provides a novel method capable of discharging oil from two sides of the axial separator. The invention is expected to be widely applied to the related fields, provides more support for improving the liquid-liquid separation efficiency, and has important significance.
In the description of the present invention, it should be understood that the terms "top," "vertical," "bottom," "inner," "side," "vertical," "upper," "lower," "rear," "height," "front," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally formed, for example; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The foregoing description of the preferred embodiments of the present invention is not intended to limit the scope of the invention, but rather to limit the scope of the invention using equivalent structural transformations of the present invention or directly or indirectly attach to other related products.
Claims (2)
1. The small-sized conical liquid-liquid axial centrifugal separation monitoring device is used for carrying out separation monitoring on a conical liquid-liquid axial centrifugal separator;
the conical liquid-liquid axial centrifugal separator comprises a generating separator and an enhanced separator;
liquid to be separated enters from the bottom of the centrifugal separator and sequentially passes through the generating separator, the conical contraction section and the reinforced separator; discharging heavy phase liquid from a heavy phase outlet HPO at the top of the centrifugal separator, and discharging light phase liquid in the separator and the enhanced separator respectively;
the hub of the generating separator is provided with a first light phase outlet LPO1 for discharging light phase liquid;
the hub of the reinforced separator is provided with a second light phase outlet LPO2 and a third light phase outlet LPO3 for discharging light phase liquid;
the third light phase outlet LPO3 is higher than the second light phase outlet LPO2 in height, and the diameters of the first light phase outlet LPO1 and the second light phase outlet LPO2 are larger than the diameter of the third light phase outlet LPO 3;
characterized in that the monitoring device comprises:
the liquid outlets of the heavy phase liquid storage tank and the light phase liquid storage tank are mixed to the bottom of the centrifugal separator through pipelines;
a settling tank A and a settling tank B, wherein the first light phase outlet LPO1, the second light phase outlet LPO2 and the separated light phase liquid are input into the settling tank A, and the third light phase outlet LPO3 is input into the settling tank B; the sedimentation tank A is internally provided with a scale, and the flow rate of the light phase liquid is calculated through the change of the volume in unit time; the sedimentation tank B is a common rectangular container with volume measurement scales;
pressure sensors for monitoring the pressure at the bottom and top of the conical liquid-liquid axial centrifugal separator; obtaining the pressure drop of the conical liquid-liquid axial centrifugal separator through the pressure at the bottom and the top;
the equipment monitor is used for recording the whole working process of the conical liquid-liquid axial centrifugal separator;
the bottom of the small conical liquid-liquid axial centrifugal separator is respectively connected with the flowmeter through a valve;
the sedimentation tank A and the sedimentation tank B are communicated with the light phase liquid storage tank; said heavy phase outlet HPO being connected to said heavy phase liquid storage tank;
the liquid outlets of the heavy phase liquid storage tank and the light phase liquid storage tank are mixed after passing through the corresponding pump bodies;
the influence of the separation performance and pressure drop of the conical liquid-liquid axial centrifugal separator is obtained through the inlet flow rate and the split ratio at the bottom of the centrifugal separator.
2. A compact cone-shaped liquid-liquid axial centrifugal separation monitoring device according to claim 1, characterized in that: the liquid outlet of the pump body is provided with a flowmeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210309063.XA CN114682397B (en) | 2022-03-28 | 2022-03-28 | Conical liquid-liquid axial centrifugal separator and separation monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210309063.XA CN114682397B (en) | 2022-03-28 | 2022-03-28 | Conical liquid-liquid axial centrifugal separator and separation monitoring device |
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| CN114682397A CN114682397A (en) | 2022-07-01 |
| CN114682397B true CN114682397B (en) | 2024-03-15 |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| NL1012451C1 (en) * | 1999-06-28 | 2001-01-02 | Cds Engineering B V | Apparatus and method for separating natural gas and water. |
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| CN108434787A (en) * | 2018-05-16 | 2018-08-24 | 中国海洋石油集团有限公司 | A kind of pipe type oil-water separator |
| CN109260761A (en) * | 2018-10-18 | 2019-01-25 | 中国石油化工股份有限公司 | A kind of combined type liquid-liquid separator |
| CN210814048U (en) * | 2019-08-29 | 2020-06-23 | 上海安赐环保科技股份有限公司 | High-precision liquid-liquid phase separator |
| CN111974027A (en) * | 2020-08-03 | 2020-11-24 | 哈尔滨工程大学 | Pipeline type multistage oil-water separator utilizing angular momentum conservation |
| CN112236236A (en) * | 2018-06-08 | 2021-01-15 | 纽麦迪克斯格尔公司 | Centrifuge system for separating cells in a suspension |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011112403A2 (en) * | 2010-03-09 | 2011-09-15 | Dresser-Rand Company | Bladed drum for rotary separator system and method |
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2022
- 2022-03-28 CN CN202210309063.XA patent/CN114682397B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1349436A (en) * | 1999-03-08 | 2002-05-15 | 阿尔法拉瓦尔有限公司 | Method and device for indicating an undesired operation condition of a centrifugal separator |
| NL1012451C1 (en) * | 1999-06-28 | 2001-01-02 | Cds Engineering B V | Apparatus and method for separating natural gas and water. |
| CN1686615A (en) * | 2005-04-28 | 2005-10-26 | 复旦大学 | Mixture air floatation type dynamic vortex flow separation method and its device |
| CN102743898A (en) * | 2012-06-12 | 2012-10-24 | 中海石油(中国)有限公司深圳分公司 | Ducted two-stage flow deflector type oil-water separator and its application method |
| CN103394213A (en) * | 2013-07-09 | 2013-11-20 | 哈尔滨工程大学 | Spiral blade type small-size air bubble separation device |
| CN206546679U (en) * | 2017-02-20 | 2017-10-10 | 福州大学 | Agitating extraction column self assembly experimental provision |
| CN108434787A (en) * | 2018-05-16 | 2018-08-24 | 中国海洋石油集团有限公司 | A kind of pipe type oil-water separator |
| CN112236236A (en) * | 2018-06-08 | 2021-01-15 | 纽麦迪克斯格尔公司 | Centrifuge system for separating cells in a suspension |
| CN109260761A (en) * | 2018-10-18 | 2019-01-25 | 中国石油化工股份有限公司 | A kind of combined type liquid-liquid separator |
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| CN111974027A (en) * | 2020-08-03 | 2020-11-24 | 哈尔滨工程大学 | Pipeline type multistage oil-water separator utilizing angular momentum conservation |
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| CN114682397A (en) | 2022-07-01 |
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