EP0645585B1 - Siphon et son mode de fonctionnement - Google Patents

Siphon et son mode de fonctionnement Download PDF

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Publication number
EP0645585B1
EP0645585B1 EP94113810A EP94113810A EP0645585B1 EP 0645585 B1 EP0645585 B1 EP 0645585B1 EP 94113810 A EP94113810 A EP 94113810A EP 94113810 A EP94113810 A EP 94113810A EP 0645585 B1 EP0645585 B1 EP 0645585B1
Authority
EP
European Patent Office
Prior art keywords
liquid
flow
gas
liquid seal
submerged
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.)
Expired - Lifetime
Application number
EP94113810A
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German (de)
English (en)
Other versions
EP0645585A3 (fr
EP0645585A2 (fr
Inventor
Sebastian Dr. Dipl.-Ing. Muschelknautz
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.)
Linde GmbH
Original Assignee
Linde GmbH
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Filing date
Publication date
Application filed by Linde GmbH filed Critical Linde GmbH
Publication of EP0645585A2 publication Critical patent/EP0645585A2/fr
Publication of EP0645585A3 publication Critical patent/EP0645585A3/fr
Application granted granted Critical
Publication of EP0645585B1 publication Critical patent/EP0645585B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • F23G7/08—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases using flares, e.g. in stacks
    • F23G7/085—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases using flares, e.g. in stacks in stacks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/50—Control or safety arrangements

Definitions

  • the invention relates to a method for operating immersion in front of flare systems or in front of exhaust gas burnings, a gas stream being introduced into the immersion via an immersion pipe immersed in a liquid, and immersion.
  • immersion is known from document DE-A-3 341 849.
  • the present invention is therefore based on the object of demonstrating a method of the type mentioned at the outset and immersion which prevent liquid discharge from the immersion by means of almost 100% separation of the liquid in the immersion. In addition, pulsation of the gas flow is to be effectively prevented.
  • This backflow is achieved through hydrostatic pressure build-up in the plenum.
  • circulation of the liquid is maintained within the immersion via the flow of the liquid entrained by the gas flow and via a backflow into the accumulated liquid.
  • This procedure has the advantage that the liquid circulation (circulation) regulates itself.
  • This is advantageously accomplished in that the liquid strands flow into an outer annular space of the immersion, the liquid flowing from there into a storage space and from the storage space via at least one refill opening, preferably a refill tube, into an inner annular space, where the gas flow through the immersion tube counteracts the liquid is led. Due to its inertia, a liquid circulation operated in this way effectively prevents oscillation of the liquid level in the inner and outer annular space and thus prevents pulsating gas discharge from the immersion associated with the vibrations of the liquid level in the two annular spaces.
  • Baffles are advantageously used as internals that generate streaks of liquid.
  • the strands of liquid can be generated by several rows of deflector plates, preferably by two rows.
  • the rows of deflector plates should be staggered in the vertical direction so that the strands of liquid from the first flow of deflector plates meet the deflector plates of the row of deflector plates arranged below.
  • the gas flow is directed against the pent-up liquid via a dip tube end formed with a sawtooth profile.
  • a swirl flow can be generated by a helical toothing of the saw teeth of the dip tube end. This can support the subsequent separation of the gaseous and liquid phases.
  • the immersion is operated in such a way that a loading of the gas / liquid flow, i.e. a ratio of the mass of the liquid to the mass of the gas, between 3 and 5 occurs.
  • the immersion according to the invention is characterized by a centrally and vertically arranged immersion tube, an inner annular space arranged around the lower immersion tube end, which is delimited on the outside by a guide tube projecting over the lower immersion tube end, one at an angle of 70 to 110 °, preferably perpendicular to Immersion tube arranged baffle screen with a deflector collar arranged at its outer end at an angle of 70 to 110 °, preferably 90 °, on which internals producing fluid streaks are attached, and a collecting space which is fluidically connected to the inner annular space and which faces outward from the outer jacket of the immersion is limited.
  • the immersion according to the invention is characterized by a relatively simple construction, which enables any person skilled in the art to design the immersion for a special application without any problems.
  • the pressure loss during immersion can be calculated or estimated particularly well in the case of a specific gas flow and liquid load. This can significantly increase the safety of the system.
  • the internals consist of symmetrically arranged deflector plates.
  • the deflector plates are preferably roof-shaped, i.e. in the form of an upside down "V", with an angle of 15 to 90 °, preferably 20 to 40 °.
  • V upside down
  • the advantages of immersion described above result when the lower end of the immersion tube has a sawtooth profile. As already mentioned, the saw teeth can be arranged obliquely to generate a swirl flow.
  • the inner annular space is fluidly connected to the collecting space on its inside by at least one refill opening, preferably a centrally arranged refill tube.
  • a centrally arranged refill tube When using a centrally arranged refill pipe, this should limit the inner annulus on the inside.
  • the diameter of the refill opening or the refill tube advantageously has 20 to 50%, preferably 30 to 40%, of the diameter of the dip tube.
  • the inner annular space and the collecting space are not connected directly via the refill opening (s) or the refill tube (s), but rather the refill opening (s) or the refill tube (s) is / are in an intermediate wall is installed which, together with the guide tube, delimits a storage space which has openings to an outer annular space, ie the collecting space is divided into an outer annular space and a storage space.
  • This can be accomplished, for example, by extending the guide tube to the base of the immersion. In this way, the increased vibration damping can more effectively prevent the risk of vibrations occurring in the liquid during immersion. Openings between the storage space and the outer annular space in the form of slots or rows of holes arranged in the lower region of the storage space have proven particularly suitable.
  • the total area of the openings in the guide tube is advantageously 1 to 5 times the cross-sectional area of the refill opening (s) or the refill tube (s).
  • the refill opening (s) or the refill tube (s) in particular acts as an attenuator for vibrations of the liquid in the inner and outer annular space.
  • a gas flow 1 is introduced into the immersion via a centrally and vertically arranged dip tube 2.
  • the pressure in the gas flow 1 keeps the liquid in the inner annular space 4 at a medium gas load at a liquid level which is below the liquid level in the outer annular space 10.
  • the gas flow 1 is deflected by 180 ° between the saw teeth 3 of the dip tube end, liquid being entrained and ejected from the inner annular space 4.
  • the liquid flows partially upwards under the action of the slightly rotating gas flow 15 as a wall film along the guide tube 8. Liquid drops are absorbed by the gas flow, a gas / liquid flow being formed. This strikes at high speed the baffle screen 12 arranged perpendicular to the immersion tube 2, which is equipped with a deflecting collar 13 attached to the outer end of the baffle screen and arranged parallel to the immersion tube 2. On the inside of the deflector collar 13, deflector plates 14 are mounted in two rows. The flow is deflected by the impact screen 12 and the deflecting collar 13 by approximately 180 °, as a result of which a liquid film is formed. The liquid film is divided into individual liquid strands by the deflector plates 14 acting as flow dividers.
  • the gas can escape almost completely unimpeded with little pressure loss and, without entraining liquid, upwards from the immersion (17).
  • the strands of liquid flow (16) due to the effect of gravitation and due to the conservation of momentum, into the liquid dammed up in the outer annular space 10, the liquid strands flowing off essentially into the liquid of the outer annular space 10 via the outer jacket 9 of the immersion.
  • the phase separation that has already taken place enables an almost pulsation-free operation of the diving.
  • the liquid reaches the storage space 6 from the outer annular space 10 via the slits 11 provided at the lower end of the guide tube 8. This is delimited at the top by the intermediate wall 7, the liquid flowing from the storage space 6 via the refill tube 5 into the inner annular space 4.
  • the outer annular space 10 and the storage space 6 are closed at the bottom by the bottom wall 18.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Separating Particles In Gases By Inertia (AREA)
  • Incineration Of Waste (AREA)

Claims (19)

  1. Procédé pour la mise en oeuvre d'un siphon isolateur disposé en amont de torchères ou de dispositifs de combustion de gaz en excès, selon lequel un flux de gaz (1) est admis dans le siphon via un tube plongeur (2) immergé dans un liquide, le flux de gaz (1) étant détourné par le liquide retenu (4) et subissant un renversement de la direction d'écoulement de 160 à 200°, de préférence de 180°, une fraction du liquide étant entraînée par le flux de gaz, et le gaz et le liquide étant entraînés dans un tourbillon (15), caractérisé en ce que :
    a) le flux de gaz/liquide (15) résultant est amené contre un écran d'impact (12) pourvu d'un rebord de renvoi (13) et subit à cet endroit un renversement de la direction d'écoulement de 140 à 200°, de préférence de 180°;
    b) le renversement de la direction d'écoulement donne lieu à la formation d'un film de liquide;
    c) le film de liquide est dissocié en différents filets de liquide par des chicanes (14), et
    d) les filets de liquide s'écoulent (16) dans un collecteur (10 + 6) du siphon, tandis que le gaz s'échappe vers le haut (17) après un nouveau renversement de la direction d'écoulement, par les espaces séparant les filets de liquide.
  2. Procédé suivant la revendication 1, caractérisé en ce qu'à l'intérieur du siphon isolateur une circulation du liquide est maintenue par le flux de liquide entraîné par le flux de gaz et par un reflux depuis le collecteur (10 + 6) dans le liquide retenu.
  3. Procédé suivant la revendication 1 ou 2, caractérisé en ce que les filets de liquide s'écoulent vers le bas dans un espace annulaire externe (10) du siphon isolateur, le liquide s'écoulant de cet endroit dans une chambre d'accumulation (6) et par l'intermédiaire d'au moins une ouverture de refluement (5) dans un espace annulaire interne (4) où le flux de gaz est amené au contact du liquide par le tube plongeur (2).
  4. Procédé suivant l'une quelconque des revendications 1 à 3, caractérisé en ce que des tôles de renvoi (14) sont utilisées comme chicanes produisant des filets de liquide.
  5. Procédé suivant la revendication 4, caractérisé en ce que les filets de liquide sont produits par plusieurs, de préférence deux, rangées de tôles de renvoi (14).
  6. Procédé suivant la revendication 5, caractérisé en ce que les filets de liquide apparaissant à une rangée de tôles de renvoi (14) de la première à l'avant-dernière dans la direction d'écoulement sont amenés à la rangée suivante de tôles de renvoi (14) dans la direction d'écoulement.
  7. Procédé suivant l'une quelconque des revendications 1 à 6, caractérisé en ce que le flux de gaz (1) est amené au contact du liquide retenu via une extrémité de tube plongeur (3) profilée en dents de scie.
  8. Procédé suivant l'une quelconque des revendications 1 à 7, caractérisé en ce qu'un flux rotatoire est produit par une inclinaison oblique des dents de scie de l'extrémité du tube plongeur (3).
  9. Procédé suivant l'une quelconque des revendications 1 à 8, caractérisé en ce que le flux de gaz/liquide (15) présente une charge, c'est-à-dire un rapport entre la masse du liquide et la masse du gaz de 3 à 5.
  10. Siphon isolateur comprenant un tube plongeur (2) disposé verticalement en son centre, caractérisé par un espace annulaire interne (4) disposé autour de l'extrémité inférieure du tube plongeur (3) et limité vers l'extérieur par un tube guide (8) s'élevant plus haut que l'extrémité inférieure du tube plongeur (3), un écran d'impact (12) formant un angle de 70 à 110°, de préférence un angle droit, avec le tube plongeur (2) et comprenant, à son extrémité extérieure, un rebord de renvoi (13) formant un angle de 70 à 110°, de préférence de 90°, sur lequel sont montées des chicanes (14) produisant des filets de liquide, et un collecteur (10 + 6) communiquant, conformément à la technique des fluides, avec l'espace annulaire interne (4) et limité vers l'extérieur par l'enveloppe (9) du siphon isolateur.
  11. Siphon isolateur suivant la revendication 10, caractérisé en ce que des tôles de renvoi (14) sont disposées en tant que chicanes symétriquement sur le rebord de renvoi (13).
  12. Siphon isolateur suivant la revendication 11, caractérisé en ce que les tôles de renvoi se présentent sous la forme d'un toit et forment un angle de 15 à 90°, de préférence de 20 à 40°.
  13. Siphon isolateur suivant l'une quelconque des revendications 10 à 12, caractérisé en ce que l'extrémité inférieure du tube plongeur (2) est profilée en dents de scie (3).
  14. Siphon isolateur suivant la revendication 13, caractérisé en ce que les dents de scie (3) sont inclinées.
  15. Siphon isolateur suivant l'une quelconque des revendications 10 à 14, caractérisé en ce que l'espace annulaire interne (4) communique, conformément à la technique des fluides, avec le collecteur (10 + 6) par l'intermédiaire d'au moins une ouverture de refluement, de préférence un tube de refluement (5).
  16. Siphon isolateur suivant la revendication 15, caractérisé en ce que le diamètre de l'ouverture de refluement ou du tube de refluement (5) représente 20 à 50%, de préférence 30 à 40% du diamètre du tube plongeur (2).
  17. Siphon isolateur suivant la revendication 15 ou 16, caractérisé en ce que la ou les ouvertures de refluement ou le ou les tubes de refluement (5) sont installés dans une paroi intermédiaire (7) délimitant avec le tube guide (8) une chambre d'accumulation (6) qui présente des ouvertures (11) vers un espace annulaire externe (10).
  18. Siphon isolateur suivant la revendication 17, caractérisé en ce que les ouvertures (11) entre la chambre d'accumulation (6) et l'espace annulaire externe (10) se présentent sous la forme de fentes (11) ou de rangées d'orifices disposées dans la zone inférieure de la chambre d'accumulation (6).
  19. Siphon isolateur suivant la revendication 17 ou 18, caractérisé en ce que la surface couverte par les orifices (11) représente 1 à 5 fois la surface de la section transversale de la ou des ouvertures de refluement ou du ou des tubes de refluement (5).
EP94113810A 1993-09-17 1994-09-02 Siphon et son mode de fonctionnement Expired - Lifetime EP0645585B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4331685 1993-09-17
DE4331685A DE4331685A1 (de) 1993-09-17 1993-09-17 Verfahren zum Betreiben einer Tauchung und Tauchung

Publications (3)

Publication Number Publication Date
EP0645585A2 EP0645585A2 (fr) 1995-03-29
EP0645585A3 EP0645585A3 (fr) 1995-08-23
EP0645585B1 true EP0645585B1 (fr) 1997-12-10

Family

ID=6497983

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94113810A Expired - Lifetime EP0645585B1 (fr) 1993-09-17 1994-09-02 Siphon et son mode de fonctionnement

Country Status (4)

Country Link
US (1) US5520714A (fr)
EP (1) EP0645585B1 (fr)
DE (2) DE4331685A1 (fr)
ES (1) ES2110165T3 (fr)

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JP3695665B2 (ja) * 1995-06-30 2005-09-14 株式会社ニコテック 湿式集塵装置
AU9616798A (en) * 1997-10-08 1999-05-03 D. Andrew Trivett Gas scrubber
US6210468B1 (en) * 1998-04-27 2001-04-03 William D. Carson Multiple weir scrubber
US6149137A (en) * 1998-11-02 2000-11-21 Callidus Technologies, Inc. Method and apparatus for quenching hot flue gases
TW404491U (en) * 1999-11-19 2000-09-01 Wang Sheng Shiung Air Cleaner
US6761756B1 (en) * 2002-04-23 2004-07-13 Sandy Gomez Air purification system for a central air conditioning unit
FR2901684B1 (fr) * 2006-06-02 2008-08-29 Gerard Curien Melangeur air eau formant clapet de securite pour aspirateur eau et poussiere
US7963508B1 (en) * 2009-06-01 2011-06-21 Mcguffin Thomas R Method and apparatus for digesting sludge
US20100325956A1 (en) * 2009-06-30 2010-12-30 General Electric Company Cooling chamber assembly for a gasifier
US8986403B2 (en) * 2009-06-30 2015-03-24 General Electric Company Gasification system flow damping
CN102203222B (zh) * 2009-12-25 2013-03-20 航天长征化学工程股份有限公司 高效洁净含碳物质干粉加压气化装置及方法
US10406473B2 (en) * 2016-06-01 2019-09-10 Toyota Motor Engineering & Manufacturing North America, Inc. Exhaust unit
FR3089822B1 (fr) * 2018-12-12 2022-01-14 Suez Groupe Dispositif d’injection de fluide dans un liquide
US12215863B2 (en) 2020-10-02 2025-02-04 John Zink Company, Llc Liquid seal with mating collar
WO2022150441A1 (fr) * 2021-01-06 2022-07-14 University Of Florida Research Foundation, Incorporated Filtre à air à bain liquide
GB2614248A (en) * 2021-12-22 2023-07-05 Edwards Ltd Mist trap

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Also Published As

Publication number Publication date
DE4331685A1 (de) 1995-03-23
US5520714A (en) 1996-05-28
DE59404772D1 (de) 1998-01-22
EP0645585A3 (fr) 1995-08-23
EP0645585A2 (fr) 1995-03-29
ES2110165T3 (es) 1998-02-01

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