EP0038325A4 - Horizontal vapor-liquid separator. - Google Patents

Horizontal vapor-liquid separator.

Info

Publication number
EP0038325A4
EP0038325A4 EP19800900282 EP80900282A EP0038325A4 EP 0038325 A4 EP0038325 A4 EP 0038325A4 EP 19800900282 EP19800900282 EP 19800900282 EP 80900282 A EP80900282 A EP 80900282A EP 0038325 A4 EP0038325 A4 EP 0038325A4
Authority
EP
European Patent Office
Prior art keywords
liquid
pipes
inlet tubing
chamber
tubing
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP19800900282
Other languages
German (de)
French (fr)
Other versions
EP0038325A1 (en
Inventor
Robert A Hodgson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maloney Crawford Corp
Original Assignee
Maloney Crawford Corp
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 Maloney Crawford Corp filed Critical Maloney Crawford Corp
Publication of EP0038325A1 publication Critical patent/EP0038325A1/en
Publication of EP0038325A4 publication Critical patent/EP0038325A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes

Definitions

  • Vapor-liquid mixtures are often encountered in the process industries.
  • the dispersion of liquids in gas streams include unstable mixtures which usually must be separated prior to further processing of the phases. Most dispersions will separate naturally if left undisturbed, however, the natural separation rate is often too slow for economic con ⁇ sideration.
  • One variety of artificial separator commonly employed to accelerate the separation rate of dispersion utilizes centrifugal force of the entrained droplets for separation.
  • a second variety relies upon the impingement and coalescing of the entrained liquid upon a suitable obstruction placed in the path of the flow stream.
  • An object of the present invention is to achieve ef ⁇ ficient phase separation with minimum pressure drop in an inline installation without the use of complicated structure.
  • the present invention contemplates a horizontal vapor- liquid separator designed for inline installation for the efficient phase separation of a vapor-liquid mixture with relatively low pressure drop of the flow stream passing through the separator.
  • the invention includes a housing providing an elongated separation chamber.
  • a horizontal inlet tubing having internal vanes for imparting a helical motion to fluid flow therethrough, extends through the housing wall into the chamber.
  • a series of at least three separator pipes are mounted in spaced coaxial alignment with the inlet tubing to form a minimum of three annular orifices. The heavier entrained liquid droplets hurled to the inner peripheries of the tubing and pipes by centrifugal force pass through the orifices aided by the generally forward movement of the stream.
  • a conical baffle is placed near the end of
  • the liquid trapped in the separation chamber flows by gravity through one or more downcomers to a separate liqui accumulation chamber.
  • a normal liq level is maintained as a vapor barrier by means of suitabl level control apparatus, and the liquid is withdrawn from the bottom of the accumulation chamber at a rate equal to the liquid collection rate.
  • FIGURE 1 is a sectional elevational view of the hori ⁇ zontal vapor-liquid separator embodying the invention.
  • FIGURE 2 is a broken enlarged sectional elevational viev/ of a portion of a separator embodying the invention a showing the relative spatial arrangement of the tubing and baffle members.
  • reference character 10 generally indicates a horizontal vapor-liquid separator comprising a housing 12 having an elongated chamber 14 therein for the collection entrained liquid in a manner as will be hereinafter set fo
  • the heads 16 of the housing 12 as shown in FIGURE 1 are of an elliptical configuration for pressure service, although the actual configuration thereof plays no significant role in the invention.
  • An inlet tubing 18 extends through a central port 19 provided in left-hand head 16 of the housing 12 as viewed in FIGURE 1 and into the chamber 14.
  • a spiral vane 20 is secured in any suitable manner to the inner periphery of
  • the inlet tubing 18 for imparting a helical flow pattern to any flow stream moving therethrough.
  • the inner periphery of the downstream end 22 of inlet tub ⁇ ing 18 is preferably beveled outwardly to form a generally frusto-conical shape.
  • a pipe 24 is disposed in the chamber 14 in substantial coaxial alignment with the inlet tubing 18, and has one end thereof swaged inwardly as shown at 26 to form a generally frusto-conical outer facing.
  • the inner periphery of the opposite end of the pipe 24 is beveled outwardly as shown at 29 in a generally frusto-conical shape.
  • the swaged end 26 of pipe 24 is inserted in the beveled end 22 of inlet tubing 18 but spaced apart therefrom to form an annular orifice 30 flaring outwardly in a downstream direction.
  • the tubing 18 and the pipe 24 are secured in spaced but aligned relationship by spacer elements 32 which span the orifice 30 and are secured between the inlet tubing 18 and pipe 24 in any suitable manner (not shown) .
  • the pipe 24 is preferably concentrically disposed within the housing 12 and may be supported therein by numerous means; but as shown in FIGURE 1, the pipe 24 is supported by a plurality of struts 34 secured between the outer periphery of the pipe and the inner periphery of the housing 12.
  • a pair of pipes 36 and 38 is coaxially aligned behind pipe 24 in spaced swage-to-bevel sequence by means of spacer elements 32 to provide additional orifices 40 and 42 which are substantial ⁇ ly identical to the orifice 30.
  • the pipes 36 and 38 are preferably supported in the chamber 14 by struts 34 attached to the inner periphery of the .housing wall 12.
  • a baffle 44 having an inwardly directed substantially conical face 43, is coaxially aligned with pipe 38 and spaced apart from the beveled end 29 thereof by means of axially extending circu ferentially spaced rib members 46 secured between pipe 38 and the baffle base 41.
  • the cone apex of baffle 44 is directed toward the end of pipe 38, and the base 41 of the cone is extended radially to form a circumferential cup-like projection 45 as shown in FIGURE 2.
  • E xhaust tubing 48 is disposed in substantial coaxial alignment with inlet tubing 18 and spaced downstream from the baffle 44.
  • the exhaust tubing 48 extends from the interior of chamber 14 through a central aperture 49 pro- vided in the right-hand head 16, as viewed in FIGURE 1.
  • a second housing 54 is secured beneath housing 12 and provides a liquid accumulation chamber 56.
  • a pair of down co ers 50 and 52 are secured to the lower portion of housi 12 in open communication with chamber 14 and extend downwa ly through the upper wall of housing 54 into open communic tion with the liquid accumulation chamber 56.
  • a liquid dr line 58 is connected to the bottom of housing 54 in open communication with chamber 56 for withdrawal of liquid the from.
  • a control valve 60 is interposed in the draw line 5 and is operated by a suitable valve actuator 64 which is operably connected to a float 62 which is disposed in the chamber 56.
  • the valve 60 is preferably preset to open whe the liquid level maintained in the accumulator chamber ex ⁇ ceeds a predetermined normal level.
  • a vapor-liquid mixture (not shown) is continuously fed into inlet tubing 18.
  • the spiral vanes 20, located in tubing 18, impart a helical motion to the flow stream, and the heavier liquid components thereof are forced to the outer perimeter of the swirling flow by cen ⁇ trifugal force.
  • the separated liquid droplets exit from the main flow stream through the orifices 30, 40, and 42, and fall to the bottom of chamber 14 by gravity.
  • the flow stream exiting from the beveled end of the pipe 38 and any remaining droplets contained therein is directed against conical baffle 44.
  • Baffle 44 reverses the generally forward flow of the stream and any droplets impinging on the baffle are coalesced and fall to the bottom of chamber 14.
  • the flow stream exits the chamber 14 through the exhaust tubing 48.
  • Liquid in the chamber drains therefrom by gravity flow via downcomers 50 and 52 into the liquid accumu ⁇ lation chamber 56.
  • the separated liquid is withdrawn from chamber 56 through drain line 58.
  • Control valve 60 operated by float 62 and valve actuator 64, maintains a liquid level in the liquid accumulation chamber 56 at a predetermined level at all times, thus preventing escape of vapor there ⁇ through while withdrawing liquid at the rate of accumulation.
  • the invention disclosed operates with relatively low pressure drop and eliminates the need for conventional demister pads while achieving high separation efficiencies.

Description

Background of the Invention
Horizontal Vapor-Liquid Separator
Vapor-liquid mixtures are often encountered in the process industries. The dispersion of liquids in gas streams include unstable mixtures which usually must be separated prior to further processing of the phases. Most dispersions will separate naturally if left undisturbed, however, the natural separation rate is often too slow for economic con¬ sideration. One variety of artificial separator commonly employed to accelerate the separation rate of dispersion utilizes centrifugal force of the entrained droplets for separation. A second variety relies upon the impingement and coalescing of the entrained liquid upon a suitable obstruction placed in the path of the flow stream.
Heretofore the prior art separators have been bulky and/or inefficient in achieving the desirable phase separa¬ tion. An object of the present invention is to achieve ef¬ ficient phase separation with minimum pressure drop in an inline installation without the use of complicated structure.
Summary of the Invention The present invention contemplates a horizontal vapor- liquid separator designed for inline installation for the efficient phase separation of a vapor-liquid mixture with relatively low pressure drop of the flow stream passing through the separator.
The invention includes a housing providing an elongated separation chamber. A horizontal inlet tubing, having internal vanes for imparting a helical motion to fluid flow therethrough, extends through the housing wall into the chamber. A series of at least three separator pipes are mounted in spaced coaxial alignment with the inlet tubing to form a minimum of three annular orifices. The heavier entrained liquid droplets hurled to the inner peripheries of the tubing and pipes by centrifugal force pass through the orifices aided by the generally forward movement of the stream. A conical baffle is placed near the end of
_OM?I ' the pipe series in coaxial alignment therewith. The baffl reverses the generally forward flow of the stream and any remaining liquid droplets impinging upon the baffle as a result of their forward momentum are coalesced. An exhaus tubing, extending through the housing wall into the chambe in coaxial alignment with the inlet tubing and terminating behind the baffle permits substantially liquid-free vapor flow from the separation chamber.
The liquid trapped in the separation chamber flows by gravity through one or more downcomers to a separate liqui accumulation chamber. In the latter chamber, a normal liq level is maintained as a vapor barrier by means of suitabl level control apparatus, and the liquid is withdrawn from the bottom of the accumulation chamber at a rate equal to the liquid collection rate.
Brief Description of the Drawings FIGURE 1 is a sectional elevational view of the hori¬ zontal vapor-liquid separator embodying the invention. FIGURE 2 is a broken enlarged sectional elevational viev/ of a portion of a separator embodying the invention a showing the relative spatial arrangement of the tubing and baffle members.
Detailed Description of the Preferred Embodiment
Referring to the drawings in detail and in particular to FIGURE 1, reference character 10 generally indicates a horizontal vapor-liquid separator comprising a housing 12 having an elongated chamber 14 therein for the collection entrained liquid in a manner as will be hereinafter set fo The heads 16 of the housing 12 as shown in FIGURE 1 are of an elliptical configuration for pressure service, although the actual configuration thereof plays no significant role in the invention. An inlet tubing 18 extends through a central port 19 provided in left-hand head 16 of the housing 12 as viewed in FIGURE 1 and into the chamber 14. A spiral vane 20 is secured in any suitable manner to the inner periphery of
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WHO
/ the inlet tubing 18 for imparting a helical flow pattern to any flow stream moving therethrough. As shown in FIGURE 2, the inner periphery of the downstream end 22 of inlet tub¬ ing 18 is preferably beveled outwardly to form a generally frusto-conical shape.
A pipe 24 is disposed in the chamber 14 in substantial coaxial alignment with the inlet tubing 18, and has one end thereof swaged inwardly as shown at 26 to form a generally frusto-conical outer facing. The inner periphery of the opposite end of the pipe 24 is beveled outwardly as shown at 29 in a generally frusto-conical shape. The swaged end 26 of pipe 24 is inserted in the beveled end 22 of inlet tubing 18 but spaced apart therefrom to form an annular orifice 30 flaring outwardly in a downstream direction. The tubing 18 and the pipe 24 are secured in spaced but aligned relationship by spacer elements 32 which span the orifice 30 and are secured between the inlet tubing 18 and pipe 24 in any suitable manner (not shown) . The pipe 24 is preferably concentrically disposed within the housing 12 and may be supported therein by numerous means; but as shown in FIGURE 1, the pipe 24 is supported by a plurality of struts 34 secured between the outer periphery of the pipe and the inner periphery of the housing 12.
A pair of pipes 36 and 38, substantially identical to pip® 24, is coaxially aligned behind pipe 24 in spaced swage-to-bevel sequence by means of spacer elements 32 to provide additional orifices 40 and 42 which are substantial¬ ly identical to the orifice 30. Similarly to pipe 24, the pipes 36 and 38 are preferably supported in the chamber 14 by struts 34 attached to the inner periphery of the .housing wall 12.
A baffle 44, having an inwardly directed substantially conical face 43, is coaxially aligned with pipe 38 and spaced apart from the beveled end 29 thereof by means of axially extending circu ferentially spaced rib members 46 secured between pipe 38 and the baffle base 41. The cone apex of baffle 44 is directed toward the end of pipe 38, and the base 41 of the cone is extended radially to form a circumferential cup-like projection 45 as shown in FIGURE 2. Exhaust tubing 48 is disposed in substantial coaxial alignment with inlet tubing 18 and spaced downstream from the baffle 44. The exhaust tubing 48 extends from the interior of chamber 14 through a central aperture 49 pro- vided in the right-hand head 16, as viewed in FIGURE 1.
A second housing 54 is secured beneath housing 12 and provides a liquid accumulation chamber 56. A pair of down co ers 50 and 52 are secured to the lower portion of housi 12 in open communication with chamber 14 and extend downwa ly through the upper wall of housing 54 into open communic tion with the liquid accumulation chamber 56. A liquid dr line 58 is connected to the bottom of housing 54 in open communication with chamber 56 for withdrawal of liquid the from. A control valve 60 is interposed in the draw line 5 and is operated by a suitable valve actuator 64 which is operably connected to a float 62 which is disposed in the chamber 56. The valve 60 is preferably preset to open whe the liquid level maintained in the accumulator chamber ex¬ ceeds a predetermined normal level. Although a float mech anism is described as a preferred means of maintaining a liquid level in the liquid accumulation chamber 56, other means of liquid level control could be used equally as wel within the spirit of this invention.
In operation, a vapor-liquid mixture (not shown) is continuously fed into inlet tubing 18. The spiral vanes 20, located in tubing 18, impart a helical motion to the flow stream, and the heavier liquid components thereof are forced to the outer perimeter of the swirling flow by cen¬ trifugal force. In traveling downstream,the separated liquid droplets exit from the main flow stream through the orifices 30, 40, and 42, and fall to the bottom of chamber 14 by gravity. The flow stream exiting from the beveled end of the pipe 38 and any remaining droplets contained therein is directed against conical baffle 44. Baffle 44 reverses the generally forward flow of the stream and any droplets impinging on the baffle are coalesced and fall to the bottom of chamber 14. The flow stream, substantially free of liquid, exits the chamber 14 through the exhaust tubing 48. Liquid in the chamber drains therefrom by gravity flow via downcomers 50 and 52 into the liquid accumu¬ lation chamber 56. The separated liquid is withdrawn from chamber 56 through drain line 58. Control valve 60, operated by float 62 and valve actuator 64, maintains a liquid level in the liquid accumulation chamber 56 at a predetermined level at all times, thus preventing escape of vapor there¬ through while withdrawing liquid at the rate of accumulation.
Although at least three orifices are required for the effective removal of entrained liquid from the vapor stream, the invention disclosed operates with relatively low pressure drop and eliminates the need for conventional demister pads while achieving high separation efficiencies.
Whereas the present invention has been described in particular relation to the drawings attached hereto, it should be understood that other and further modifications, apart from those shown or suggested herein, may be made with¬ in the spirit and scope of this invention.
0JΛP1

Claims

Claims
1. A horizontal vapor-liquid separator, which comprises: a housing providing a separation chamber; a substantia ly horizontally disposed cylindrical inlet tubing exte ing through the housing wall to said separation chambe and having the inner periphery of the downstream end o said tubing beveled at a given angle outwardly in a generally frusto-conical shape; means located within said inlet tubing for imparting a helical motion to th vapor-liquid mixture introduced into said tubing; at least three cylindrical pipes, coaxially aligned with the inlet tubing, and of the same inside and outside diameter as said inlet tubing along the entire length of said at least three pipes, each of said at least three pipes having its outer periphery upstream end beveled inwardly to form a generally frusto-conical outer facing, and the inner periphery of its downstrea end thereof beveled outwardly to form a generally frus conical inner facing, the upstream end of one of said at least three pipes being inserted in the beveled dow stream end of the inlet tubing and spaced therefrom to form an annular orifice and the other of said at least three pipes mounted in spaced sequence to define addi¬ tional orifices; the upstream end of each of said at least three pipes being swaged to define an orifice of diameter less than the diameter of said pipes, and wherein the leading edge of each of said orifices is located within the said downstream bevel of the respec tive adjacent upstream inlet tubing and at least three pipes; a solid conical baffle means mounted with its apex toward the beveled end of the last of said at least three cylindrical pipes, and spaced therefrom fo coalescing any liquid droplets remaining in the flow existing from said pipe; means for removing liquid col lected in the separation chamber; and exhaust tubing extending through the housing wall into said separatio chamber in substantial axial alignment with the inlet tubing.
OMP 2. A horizontal vapor-liquid separator, as recited in claim 1, wherein the means for removing liquid collected in the separation chamber comprises: a second housing located under the first housing providing a liquid accu¬ mulation chamber; downcomer means connected between the bottom of the first housing and the second housing in open communication with the separation chamber and the liquid accumulation chamber; a draw line connected to the lower portion of the second housing in open communica¬ tion with the liquid accumulation chamber; a control valve operably connected to the draw line; and means for sensing the liquid level in the accumulation chamber and operating the control valve to maintain a predetermined level therein.
3. A horizontal vapor-liquid separator as recited in claim
2, wherein the baffle means includes a cup-like projec¬ tion with the sides of said cup-like projection oriented toward said inlet tubing.
4. A horizontal vapor-liquid separator as recited in claim
3, wherein the means located within the inlet tubing for imparting a helical motion to the vapor liquid mixture comprises: a spiral vane secured to the inner periphery of the inlet tubing.
OM?I / , ~ WIPO «
EP19800900282 1979-10-24 1981-05-04 Horizontal vapor-liquid separator. Withdrawn EP0038325A4 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1979/000890 WO1981001110A1 (en) 1979-10-24 1979-10-24 Horizontal vapor-liquid separator

Publications (2)

Publication Number Publication Date
EP0038325A1 EP0038325A1 (en) 1981-10-28
EP0038325A4 true EP0038325A4 (en) 1981-11-25

Family

ID=22147751

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800900282 Withdrawn EP0038325A4 (en) 1979-10-24 1981-05-04 Horizontal vapor-liquid separator.

Country Status (9)

Country Link
EP (1) EP0038325A4 (en)
JP (1) JPS56501351A (en)
AT (1) AT377927B (en)
BR (1) BR7909044A (en)
DE (1) DE2953875A1 (en)
GB (1) GB2078561B (en)
NL (1) NL7920206A (en)
RO (1) RO85029B (en)
WO (1) WO1981001110A1 (en)

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IT1182228B (en) * 1985-05-27 1987-09-30 Ansaldo Componenti Spa D G V TWO-PHASE GAS-LIQUID OR STEAM-LIQUID MIXING SEPARATOR WITH DESCENDING FLOW
EP0776686B1 (en) * 1995-12-01 2002-01-16 ExxonMobil Research and Engineering Company Multi-stage gas/solids separator and process
WO1999059867A1 (en) * 1998-05-20 1999-11-25 Alliedsignal Inc. Coanda water extractor
DE102013101499A1 (en) * 2013-02-14 2014-08-14 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Compressed air device of a vehicle with centrifugal separator
WO2017104184A1 (en) * 2015-12-17 2017-06-22 臼井国際産業株式会社 Gas-liquid separation device
WO2017104183A1 (en) * 2015-12-17 2017-06-22 臼井国際産業株式会社 Swirling flow generator for gas-liquid separation
CN109219686A (en) 2016-04-01 2019-01-15 比格斯威有限公司 For separating the separator of fluid
JP6730175B2 (en) * 2016-12-16 2020-07-29 臼井国際産業株式会社 EGR cooler
CN108815927B (en) * 2018-06-12 2021-05-14 哈尔滨工程大学 Multifunctional wide-flow-path efficient gas-liquid separation device combining gravity and centrifugal technology
CN109578251A (en) * 2018-12-27 2019-04-05 四川金象赛瑞化工股份有限公司 A kind of compressor collector and method
CN110090517B (en) * 2019-05-08 2023-09-08 俞春华 Stepped gas-liquid separator
CN116139599B (en) * 2023-04-23 2023-06-23 佛山市清极能源科技有限公司 Gas-water separator of fuel cell

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2240771A1 (en) * 1973-08-17 1975-03-14 Siemens Ag
GB2001265A (en) * 1977-06-13 1979-01-31 Perry Equipment Corp Apparatus for separating particles from a gas stream

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US899820A (en) * 1905-11-28 1908-09-29 William G Abbott Jr Apparatus for pumping air and gases.
US1735298A (en) * 1927-02-09 1929-11-12 American Blower Corp Apparatus for collecting dust particles
US2193209A (en) * 1938-07-19 1940-03-12 William A Sandberg Steam and gas separator
DE1078415B (en) * 1953-10-20 1960-03-24 Maschf Augsburg Nuernberg Ag Device for peeling off the dusty outer layer of a dust gas flow conveyed with a swirl in a pipeline
US3884660A (en) * 1973-12-07 1975-05-20 Perry Equipment Corp Gas-liquid separator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2240771A1 (en) * 1973-08-17 1975-03-14 Siemens Ag
GB2001265A (en) * 1977-06-13 1979-01-31 Perry Equipment Corp Apparatus for separating particles from a gas stream

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO8101110A1 *

Also Published As

Publication number Publication date
NL7920206A (en) 1981-09-01
AT377927B (en) 1985-05-28
GB2078561B (en) 1983-03-09
RO85029A (en) 1984-08-17
WO1981001110A1 (en) 1981-04-30
RO85029B (en) 1984-09-30
ATA908579A (en) 1984-10-15
BR7909044A (en) 1981-08-25
JPS56501351A (en) 1981-09-24
DE2953875A1 (en) 1982-02-04
GB2078561A (en) 1982-01-13
EP0038325A1 (en) 1981-10-28

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Inventor name: HODGSON, ROBERT A.