KR20170061381A - Separator for multiphase mixture - Google Patents

Separator for multiphase mixture Download PDF

Info

Publication number
KR20170061381A
KR20170061381A KR1020150166323A KR20150166323A KR20170061381A KR 20170061381 A KR20170061381 A KR 20170061381A KR 1020150166323 A KR1020150166323 A KR 1020150166323A KR 20150166323 A KR20150166323 A KR 20150166323A KR 20170061381 A KR20170061381 A KR 20170061381A
Authority
KR
South Korea
Prior art keywords
mixture
passage
sand
separation tank
polyphase
Prior art date
Application number
KR1020150166323A
Other languages
Korean (ko)
Other versions
KR101774773B1 (en
Inventor
이희웅
김성우
임효남
Original Assignee
삼성중공업 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 삼성중공업 주식회사 filed Critical 삼성중공업 주식회사
Priority to KR1020150166323A priority Critical patent/KR101774773B1/en
Publication of KR20170061381A publication Critical patent/KR20170061381A/en
Application granted granted Critical
Publication of KR101774773B1 publication Critical patent/KR101774773B1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0208—Separation of non-miscible liquids by sedimentation
    • B01D17/0211—Separation of non-miscible liquids by sedimentation with baffles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0208—Separation of non-miscible liquids by sedimentation
    • B01D17/0214—Separation of non-miscible liquids by sedimentation with removal of one of the phases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0217—Separation of non-miscible liquids by centrifugal force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B2035/448—Floating hydrocarbon production vessels, e.g. Floating Production Storage and Offloading vessels [FPSO]

Abstract

A multiphasic mixture separation apparatus is disclosed. The apparatus for separating a polyphase mixture according to an embodiment of the present invention includes a separation tank having a mixture inlet portion into which a polyphase mixture flows, separates into gas, oil, water and sand by a specific gravity difference, A momentum damping portion connected to the mixture inlet portion inside the separation tank and having a passage through which the multiphase mixture introduced through the mixture inlet portion falls into a spiral trajectory; And a sand discharge unit for discharging the sand falling from the edge of the passage in a spiral shape trajectory by the difference in density among the multiphasic mixture from the separation tank.

Description

Separator for multiphase mixture [

The present invention relates to a multiphasic mixture separation apparatus.

With the rapid development of industries and industries internationally, the use of earth resources such as petroleum is gradually increasing, and thus the stable production and supply of crude oil is emerging as an important issue on a global scale.

For this reason, recently marginal field or deep-sea oil development has been economically feasible, which has been neglected due to economic difficulties so far. Therefore, with the development of submarine mining technology, drilling facilities suitable for the development of such oilfields A floating type of offshore structure has been developed.

In other words, conventional seabed drilling is mainly used for a rig ship or a fixed platform dedicated to deep sea drilling, which can be sailed only by another tugboat, Recently, it has developed so-called Floating Production Storage Off-loading Vessels (FPSO), which is equipped with advanced drilling equipment and built in the same shape as a general ship so that it can navigate with its own power. It is used for drilling underwater.

Floating Crude Oil Production Storage and Handling Facility (FPSO) classifies and refines well fluids extracted from offshore plants and drillships to produce crude oil and store it to shuttle tankers Tanker or other special ship capable of being unloaded at the transfer site.

This floating crude oil production storage and unloading facility (FPSO) is composed of a lower hull structure (Hull) that functions as a storage facility and a topsides that produces and processes crude oil. Depending on storage capacity, Small size, between 100 and 1.5 million barrels, between 150 and 200 million barrels, and over 2 million barrels.

On the other hand, the floating oil production storage and unloading facility is equipped with a separating device for separating the drilled wells. An oil well jet mix is a multiphase mixture of water, oil, gas, and sand.

Such a separation device separates the oil-gas mixture into oil, water and solid components using specific gravity difference. That is, the oil-in-water mixture supplied to the separation device is separated into oil component, water component and solid component from the inside of the separation device over time, and the separated oil component is separated into water The solid component (eg sand), which is located above the component and has the highest specific gravity, is deposited on the bottom of the separator.

If a solid component such as sand is continuously accumulated on the floor, it is necessary to remove the sand because it interferes with the separation function. However, in order to remove the sand, the separation device must be stopped, so that the separation efficiency is lowered, and additional equipment and energy are required for removing the sand, thereby increasing the cost.

An embodiment of the present invention is to provide a multiphase mixture separation apparatus configured to effectively remove sand contained in a polyphase mixture.

According to an aspect of the present invention, there is provided a separation tank, comprising: a separation tank in which a polyphase mixture is introduced and separated into gas, oil, water and sand by a specific gravity difference, A momentum damping portion connected to the mixture inlet portion inside the separation tank and attenuating kinetic energy of the polyphase mixture introduced through the mixture inlet portion and having a passageway for dropping the polyphase mixture into a spiral trajectory; And a sand discharge unit for discharging the sand falling from the edge of the passage by the density difference of the multiphasic mixture into the spiral trajectory from the separation tank.

The passage extends in the up-and-down direction and has a circular cross-section, and the polyphase mixture can be introduced into the passage with a tangential direction to the circular cross-section.

The passage may become narrower as it goes down.

And an outlet through which the gas separated from the polyphase mixture is discharged may be formed at one side of the momentum damping unit in the process of attenuating the kinetic energy of the polyphase mixture introduced into the momentum damping unit.

Wherein the sand discharge unit comprises: a base member located below the passage and forming a receiving space in which the sand falling along the edge of the passage enters and is temporarily received; And a discharge line for providing a path for discharging the sand introduced into the accommodation space to the outside of the separation tank.

The discharge line may extend in a tangential direction to a spiral trace of the sand falling along the passage.

According to the embodiment of the present invention, the sand falling from the edge of the passage into the spiral-shaped trajectory is discharged from the separation tank through the sand discharge portion by the density difference among the polyphase mixture introduced into the passage of the momentum damping portion, It is possible to prevent accumulation.

As a result, the separation efficiency can be improved and the cost can be reduced unlike the conventional method in which the separating device is stopped to remove the sand accumulated in the separation tank or the expensive sand removal device is used.

1 is a view showing a device for separating a polyphase mixture according to an embodiment of the present invention,
FIG. 2 is a top view of a momentum damping unit according to an embodiment of the present invention,
FIG. 3 is a view showing a momentum damping unit according to an embodiment of the present invention,
FIG. 4 is a side view of the inside of a momentum damping unit according to an embodiment of the present invention,
5 is a view showing a modified example of the sand discharge unit shown in FIG. 4,
6 is a top view of the inside of the sand discharge unit of FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Referring to the accompanying drawings, the same or corresponding components are denoted by the same reference numerals, do.

1 is a view showing an apparatus for separating a polyphase mixture according to an embodiment of the present invention. 1, the X-axis direction means the longitudinal direction of the separation tank 110, the Y-axis direction means the width direction of the separation tank 110, and the -X direction means the front of the separation tank 110 do.

1, the multiphase mixture separation apparatus 100 includes a separation tank 110, a partitioning member 120, a momentum damping unit 140, and a sand discharge unit 150.

The polyphase mixture enters the separation tank (110). The polyphase mixture introduced into the separation tank 110 can be separated into gas, oil and water by the specific gravity difference.

For example, the polyphase mixture introduced into the separation tank 110 can be separated so that the water having a relatively large specific gravity is located below the water, the oil having the next largest specific gravity is placed thereon, and the gas having the lowest specific gravity is positioned at the top.

The polyphase mixture may be an oil spill mixture ejected from a subsea well. In this case, the polyphase mixture may comprise water, oil, gas, sand, and the like.

The polyphase mixture flowing into the separation tank 110 moves in the longitudinal direction of the separation tank 110 and can be separated into gas, oil and water.

In the separation tank 110, a mixture inlet portion 131 is formed. The mixture inlet 131 may be formed at the front of the separation tank 110. The polyphase mixture may be introduced into the separation tank 110 through the mixture inlet 131. At the rear end of the mixture inlet 131 in the separation tank 110, a momentum damping unit 140 may be installed. This will be described later.

The oil separator 134 may be formed in the separation tank 110. The separated oil in the separation tank 110 may be discharged to the outside through the oil discharge portion 134.

The oil discharge portion 134 may be formed at a rear portion of the separation tank 110. The oil discharge portion 134 is preferably located far from the mixture inlet portion 131. In this case, the moving distance of the polyphase mixture flowing into the separating tank 110 is increased, so that the separation time can be increased.

The separation tank 110 may be provided with a gas discharge portion 136. The separated gas in the separation tank 110 may be discharged to the outside through the gas discharge portion 136. A mist extractor 137 may be installed at the tip of the gas discharge part 136. The gas in the separation tank 110 may be discharged through the gas discharge unit 136 in a state in which moisture is removed from the water extractor 137.

A water discharge portion 138 may be formed in the separation tank 110. The separated water in the separation tank 110 can be discharged to the outside through the water discharge portion 138.

The partitioning member 120 may be disposed inside the separating tank 110. The partitioning member 120 blocks water from flowing into the oil discharge portion 134.

1, the left side of the partitioning member 120 is referred to as a 'separation zone,' and the right side of the partitioning member 120 is referred to as a ' Oil field '.

The partition member 120 prevents water in the separation zone from entering the oil space. This partitioning member 120 can be formed higher than the water level in the separation zone.

When the polyphase mixture continuously flows into the separation tank 110, the amount of oil in the separation zone continuously increases, so that the oil in the separation zone can eventually flow into the oil zone beyond the partition member 120. The oil introduced into the oil space can be discharged to the outside through the oil discharge portion 134.

FIG. 2 is a top view of a momentum damping unit according to an embodiment of the present invention. FIG. 3 is a plan view of a momentum damping unit according to an embodiment of the present invention. And the inside of the momentum damping portion is viewed from the side.

Referring to FIGS. 2 to 4, the momentum damping unit 140 attenuates the kinetic energy of the polyphase mixture introduced into the separation tank 110 through the mixture inlet 131.

For example, when the polyphase mixture flows into the momentum attenuation unit 140, the polyphase mixture collides with the inner side of the momentum attenuation unit 140, so that kinetic energy can be attenuated. In this process, some gases can be separated from the polyphase mixture by impact. The separated gas may be introduced into the inner space of the separation tank 110 through the outlet 143 formed in the upper wall of the momentum damping unit 140 as shown in FIG.

When the multiphase mixture in which the momentum is attenuated by the momentum damping unit 140 flows into the separation tank 110, the flow inside the separation tank 110 can be stabilized. Whereby the polyphase mixture can be effectively separated.

In this embodiment, the momentum damping unit 140 may be provided with a passage 141 through which the inflowing polyphase mixture falls down into the spiral trajectory.

For example, the passage 141 may extend in the vertical direction and have a circular horizontal cross section. And the polyphase mixture may enter the passageway 141 tangentially to the circular cross-section of the passageway 141. In this case, the polyphase mixture introduced into the momentum damping unit 140 may fall down into the spiral trajectory in the passage 141.

When the polyphase mixture falls down into the spiral trajectory, the sand in the polyphase mixture falls on the edge of the passage 141 due to the density difference and falls. The water, oil, and gas in the polyphase mixture are sequentially positioned close to the center of the passage 141 by the density difference and fall.

In this embodiment, the sand discharge unit 150 discharges sand falling along the edge of the passage 141 of the momentum damping unit 140 to the outside.

For example, the sand discharge unit 150 may include a base member 151 and a discharge line 153.

The base member 151 is located below the passage 141 and blocks the sand falling along the edge of the passage 141 from falling into the separation tank 110. The base member 151 forms a receiving space 151a in which the sand falling along the passage 141 flows in and is temporarily accommodated. The receiving space 151a may have a circular horizontal cross section.

The base member 151 is formed with a base outlet 151b for dropping the oil and water located at the center of the passage 141 to the interior of the separation tank 110 than the sand among the polyphase mixture falling along the passage 141 .

The base outlet 151b has a concentric circular structure with the passage outlet 141a formed at the lower end of the passage 141 and may have a smaller diameter than the passage outlet 141a.

A barrier 152 protruding upward may be formed at the periphery of the base outlet 151b. The barrier wall 152 blocks the inflow of the sand introduced into the accommodation space 151a formed by the base member 151 into the separation tank 110 through the base outlet 151b.

The discharge line 153 is connected to the base member 151. The discharge line 153 provides a path for discharging the sand introduced into the accommodation space 151a formed by the base member 151 to the outside of the separation tank 110. [ The discharge line 153 may extend in the tangential direction to the spiral trace of the sand falling along the passage 141.

In this case, the sand falling in the spiral locus in the passage 141 can be smoothly introduced into the discharge line 153 via the accommodating space 151a of the base member 151 and discharged.

The discharge line 153 may be provided in plurality as shown in FIGS. 2 to 4, but may be provided in a single number.

As another example, the sand discharge unit 150 'may include a discharge line 153 as shown in FIGS. 5 is a view showing a modified example of the sand discharge unit shown in FIG. 4, and FIG. 6 is a view showing the inside of the sand discharge unit shown in FIG. 5 from above. Referring to FIGS. 5 and 6, the discharge line 153 may be formed in the momentum damping unit 140.

The inlet of the discharge line 153 may be located at the edge of the passage 141. The discharge line 153 may extend in the tangential direction of the spiral trace of the sand falling at the edge of the passage 141.

The discharge lines 153 may be provided in plural, and the plurality of discharge lines 153 may be arranged in the vertical direction.

On the other hand, the passage 141 may have a shape that narrows downward as shown in Figs. 4 and 5. In this case, the gas located at the center of the passage 141 can not escape smoothly through the passage outlet 141a and is raised by the specific gravity difference. The raised gas can be introduced into the inner space of the separation tank 110 through the outlet 143 formed on the upper wall of the momentum damping unit 140. Therefore, the separation efficiency can be improved.

The polyphase mixture separating apparatus 100 according to the present embodiment as described above can drop down the path of the spiral shape from the edge of the passage 141 due to the density difference among the polyphase mixture flowing into the passage 141 of the momentum damping unit 140 The sand is discharged from the separation tank 110 through the sand discharge unit 150 so that the sand can be prevented from accumulating in the separation tank 110 in advance. As a result, the separation efficiency can be improved and the cost can be reduced unlike the conventional method in which the separating device is stopped to remove the sand accumulated in the separation tank 110 or an expensive sand removal device is used.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, many modifications and changes may be made by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims. The present invention can be variously modified and changed by those skilled in the art, and it is also within the scope of the present invention.

100: Multiphase mixture separator
110: Separation tank
120: partition member
131: mixture inlet
134: Oil discharge portion
136:
137: Water extractor
138:
140: momentum damping unit
141: passage
150:
151: Base member
153: discharge line

Claims (6)

A separating tank in which a polyphase mixture is introduced and separated into gas, oil, water and sand by a specific gravity difference, and in which a mixture inlet portion into which the polyphase mixture flows is formed;
A momentum damping portion connected to the mixture inlet portion inside the separation tank and having a passage through which the multiphase mixture introduced through the mixture inlet portion falls into a spiral trajectory; And
And a sand discharge unit for discharging the sand falling from the edge of the passage in a spiral shape trajectory from the separation tank by a difference in density among the multiphasic mixture. The method according to claim 1,
The passage extends in the vertical direction and has a circular cross section,
Wherein the polyphase mixture has a tangential direction to the circular cross-section and flows into the passage. The multiphase mixture separation apparatus according to claim 1, wherein the passage narrows downward. The method according to claim 1,
Wherein an exit through which the gas separated from the polyphase mixture is formed is formed at one side of the momentum damping unit in a process of attenuating kinetic energy of the polyphase mixture introduced into the momentum damping unit. The method according to claim 1,
The sand-
A base member located below the passage and forming a receiving space for temporarily accommodating the sand falling along the edge of the passage; And
And a discharge line for providing a path for discharging the sand introduced into the accommodation space to the outside of the separation tank. 6. The method of claim 5,
Wherein the discharge line extends in a tangential direction to a spiral trace of the sand falling along the passage.
KR1020150166323A 2015-11-26 2015-11-26 Separator for multiphase mixture KR101774773B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150166323A KR101774773B1 (en) 2015-11-26 2015-11-26 Separator for multiphase mixture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150166323A KR101774773B1 (en) 2015-11-26 2015-11-26 Separator for multiphase mixture

Publications (2)

Publication Number Publication Date
KR20170061381A true KR20170061381A (en) 2017-06-05
KR101774773B1 KR101774773B1 (en) 2017-09-05

Family

ID=59222958

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150166323A KR101774773B1 (en) 2015-11-26 2015-11-26 Separator for multiphase mixture

Country Status (1)

Country Link
KR (1) KR101774773B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019009510A1 (en) 2017-07-05 2019-01-10 김덕우 Auxiliary memory device providing independent backup and recovery functions and apparatus employing same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005219047A (en) * 2004-01-07 2005-08-18 Tetsukazu Urano Oil-in-water separating apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019009510A1 (en) 2017-07-05 2019-01-10 김덕우 Auxiliary memory device providing independent backup and recovery functions and apparatus employing same

Also Published As

Publication number Publication date
KR101774773B1 (en) 2017-09-05

Similar Documents

Publication Publication Date Title
KR101287374B1 (en) Separator to separate a liquid/liquid/gas/solid mixture
EA011658B1 (en) Initial separation of fluid at well head
KR101036621B1 (en) Apparatus for processing drain
US11624249B2 (en) Sand and gas separation apparatus and method thereof
GB2490346A (en) Cyclonic separator having a tapered core element
US20130284026A1 (en) Oil skimming apparatus and method for using same
KR101774773B1 (en) Separator for multiphase mixture
KR101741423B1 (en) Separator for multiphase mixture
KR101563671B1 (en) Separation device for floating Offshore Structure
KR20130025499A (en) Apparatus processing drain
KR101824378B1 (en) Separator for multiphase mixture
KR101824390B1 (en) Separator for multiphase mixture
KR101774778B1 (en) Separator for multiphase mixture
KR101824396B1 (en) Separator for multiphase mixture
KR20140057065A (en) Produced water de-sander system
KR101357370B1 (en) Apparatus for treating drain in drill ship and drill ship having the apparatus
NO20120521A1 (en) Underwater separation systems
KR101854621B1 (en) Separator for multiphase mixture
CA1316840C (en) Method and system for degrading a foam fluid
US10583373B2 (en) Method and device for separation of liquids and gas with use of inclined and rounded holes or channels in the wall of a pipe
KR101652375B1 (en) Separator for oil well fluid
KR20140077388A (en) Produced water de-sander system
KR101670881B1 (en) Drilling cutting disposal system and shaleshaker room
KR101616428B1 (en) Degasser for mud treatment
KR101741540B1 (en) Apparatus for decomposing an emulsion

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right