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WO2009127769A1 - Procédé de nettoyage de courants de fluide gazeux avec des détergents liquides ou solides à l’aide d'un séparateur cyclonique - Google Patents

Procédé de nettoyage de courants de fluide gazeux avec des détergents liquides ou solides à l’aide d'un séparateur cyclonique Download PDF

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Publication number
WO2009127769A1
WO2009127769A1 PCT/FI2008/000052 FI2008000052W WO2009127769A1 WO 2009127769 A1 WO2009127769 A1 WO 2009127769A1 FI 2008000052 W FI2008000052 W FI 2008000052W WO 2009127769 A1 WO2009127769 A1 WO 2009127769A1
Authority
WO
WIPO (PCT)
Prior art keywords
flow
cyclone separator
medium
outlet
cleansing
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.)
Ceased
Application number
PCT/FI2008/000052
Other languages
English (en)
Inventor
Vesa Leppanen
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.)
LEANCOM Oy
Original Assignee
LEANCOM Oy
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 LEANCOM Oy filed Critical LEANCOM Oy
Priority to PCT/FI2008/000052 priority Critical patent/WO2009127769A1/fr
Publication of WO2009127769A1 publication Critical patent/WO2009127769A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/06—Spray cleaning
    • 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

Definitions

  • a method for cleansing gaseous medium flows with liquid or solid washing media by using a cyclone separator
  • the invention focuses on a method for cleansing gaseous medium flows with different liquid or solid substances by the use of a cyclone separator.
  • a gaseous medium flow flows into the cyclone separator through an inlet duct and is forced into a revolving flow movement inside the cyclone separator.
  • the flow changes into an outlet flow that flows through the center of the inlet flow in a direction contrary to that of the inlet flow.
  • the utilization of the durations of these different flows provides the washing media being used with sufficient time to act on the medium flow in order to obtain a good cleansing result.
  • the utilization of correct feeding points and the structure of the cyclone separator prevent the washing medium and the impurities that it has cleansed from the medium flow from being released along with the outlet flow.
  • cyclone separators are used for separating solid matter and liquid droplets contained within a gaseous medium flow from the gaseous medium flow.
  • a gaseous medium flow is forced inside the cyclone separator into a centrifugal flow that revolves within the cyclone separator usually from the top downwards.
  • the inlet duct for the gaseous medium flow is at the upper edge of the cyclone separator, as a result of which the in-flowing gaseous medium flow starts to revolve on the inside of the cylindrical cyclone separator in a downward spiral movement.
  • the spiral medium flow flows downwards to the conical lower part of the cyclone separator, maintaining its flow speed, the revolving medium flow accelerates at an angular speed which is dependant on the steepness of the cone.
  • the spiral medium flow reaches the bottom of the conical lower part of the cyclone separator, the spiral medium flow turns upwards and becomes a spiral outlet flow that maintains its direction of revolution.
  • the separation efficiency of a cyclone separator depends on the centrifugal field that forms within the cyclone separator. It is generally known that the greater the angular speed of a gaseous medium flow, the stronger the centrifugal field is, and the strength of a centrifugal field is directly proportional to the square of the angular speed of the medium flow. Since these movements and their durations can be calculated mathematically, it is also possible to calculate the time period during which the washing media being used act on the medium within the cyclone separator.
  • the goal of the invention is to incorporate the possibility for cleansing a gaseous medium into a cyclone separator and to ensure that the cleansed gaseous medium is removed from the cyclone separator without impurities or washing medium residuals.
  • the method applied in this invention is known for the fact that the correct positioning of the washing medium injection is used as an addition to the structure of a cyclone separator in order to improve the separation capability of the cyclone separator.
  • the solution applied in this invention makes it possible to prevent impurities contained in the outlet flow from making their way to the outlet duct and from there to the outlet flow.
  • the mechanical structure of the outlet duct brings about an improvement in the separation capability in comparison to that obtained with a conventional outlet duct.
  • the invention is based on the fact that the washing medium used in cleansing a medium is injected into the medium flow either immediately after the inlet duct through one or several nozzles during the first revolution if the washing medium requires a long action time or in the outlet flow in which case the outlet flow has to re-enter the circulation and join the uncleansed gaseous medium that is entering separator. These injections can also be used simultaneously.
  • Cyclone separator A consists of a main frame, which is a cylinder labeled B, an inlet duct C through which the medium flow to be purified 1 enters as well as an outlet tube D through which the purified medium exits as flow 3.
  • a cone E that narrows downwards is attached to cylinder B of the Cyclone separator A.
  • At the bottom of cone there is a removal hole F through which the impurities separated from the medium are removed as outlet flow 2.
  • washing medium 12 can be injected into this flow at a pressure generated by a separate pump when the washing medium requires as long a duration as possible to act on the impurities contained in medium flow 11 and in order to enable these impurities to be removed. This is the situation, in particular, when the impurities are in gaseous form.
  • the washing medium solution is more often than not water, although it can also be any other injectable liquid or solid substance or chemical compound.
  • this outlet flow 13 can be dispersed by injecting washing medium 14 at the flow in a direction directly against its direction of flow at a pressure generated by a separate pump when the purpose of injecting the washing medium is to improve the structural separation capability of the cyclone separator and the cleansing result.
  • the solid particles and liquid droplets contained in the outlet flow are dispersed into flow 11 and, thereby, back into the separation. After acting on flow 11 that revolves in the cyclone separator, washing medium 14 is sent into the outlet flow.
  • washing medium 14 In order to obtain the best cleansing result and separation capability, washing medium 14 must be injected at a point at which the force generated by the injection is equivalent to that required to disperse outlet flow 13. This differs depending on the structure of the cyclone and, among other things, the steepness of the conical part.
  • the invention enables the solid particles and liquid droplets contained in the outlet flow to return back into the main circulation as efficiently as possible.
  • the method developed in this invention makes it possible to achieve a controlled and very good cleansing result and high separation efficiency in comparison to those obtained using a conventional cyclone.
  • the effect of the solution developed in this invention on the structure and appearance of a cyclone separator is very small.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Cyclones (AREA)

Abstract

L'invention porte sur un procédé de nettoyage de courants de fluide gazeux (1) avec différentes substances liquides ou solides (12, 14) à l’aide d'un séparateur cyclonique (A). Un courant de fluide gazeux (1), qui pénètre dans le séparateur cyclonique (A) par un conduit d'entrée (C), est soumis de force à un mouvement d'écoulement tournant (11) à l'intérieur du séparateur cyclonique. A l'extrémité de la section conique inférieure (E) du séparateur cyclonique (A), le courant (11) se transforme en un courant de sortie (13), qui passe par le centre du courant d'entrée dans une direction opposée à celle du courant d'entrée. L'utilisation de la durée de ces différents courants donne aux détergents utilisés (12, 14) suffisamment de temps pour agir sur le courant de fluide dans le but d'obtenir un bon résultat de nettoyage. L'utilisation de points d'alimentation corrects (12, 14) et la structure du séparateur cyclonique (G, H) empêchent que le détergent et les impuretés qui sont éliminées du courant de fluide ne s'échappent en même temps que le courant de sortie (3).
PCT/FI2008/000052 2008-04-16 2008-04-16 Procédé de nettoyage de courants de fluide gazeux avec des détergents liquides ou solides à l’aide d'un séparateur cyclonique Ceased WO2009127769A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/FI2008/000052 WO2009127769A1 (fr) 2008-04-16 2008-04-16 Procédé de nettoyage de courants de fluide gazeux avec des détergents liquides ou solides à l’aide d'un séparateur cyclonique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FI2008/000052 WO2009127769A1 (fr) 2008-04-16 2008-04-16 Procédé de nettoyage de courants de fluide gazeux avec des détergents liquides ou solides à l’aide d'un séparateur cyclonique

Publications (1)

Publication Number Publication Date
WO2009127769A1 true WO2009127769A1 (fr) 2009-10-22

Family

ID=41198812

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2008/000052 Ceased WO2009127769A1 (fr) 2008-04-16 2008-04-16 Procédé de nettoyage de courants de fluide gazeux avec des détergents liquides ou solides à l’aide d'un séparateur cyclonique

Country Status (1)

Country Link
WO (1) WO2009127769A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5761466B1 (ja) * 2013-10-31 2015-08-12 千住金属工業株式会社 フラックス回収装置及びはんだ付け装置
IT201600118991A1 (it) * 2016-11-24 2018-05-24 Univ Degli Studi Genova Processo di sintesi a freddo di nanoparticelle da fasi aerosolizzate e impianto per la sua attuazione
CN108067048A (zh) * 2016-11-11 2018-05-25 中国石油化工股份有限公司抚顺石油化工研究院 一种双锥筒形除雾器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1356866A (en) * 1972-04-27 1974-06-19 Schwarz Holywell Ltd Filters for removing airborne dust
SU915908A1 (ru) * 1977-09-06 1982-03-30 Letyuk Aleksandr Устройство для очистки газа i

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1356866A (en) * 1972-04-27 1974-06-19 Schwarz Holywell Ltd Filters for removing airborne dust
SU915908A1 (ru) * 1977-09-06 1982-03-30 Letyuk Aleksandr Устройство для очистки газа i

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5761466B1 (ja) * 2013-10-31 2015-08-12 千住金属工業株式会社 フラックス回収装置及びはんだ付け装置
JP5761467B1 (ja) * 2013-10-31 2015-08-12 千住金属工業株式会社 フラックス回収装置及びはんだ付け装置
CN108067048A (zh) * 2016-11-11 2018-05-25 中国石油化工股份有限公司抚顺石油化工研究院 一种双锥筒形除雾器
IT201600118991A1 (it) * 2016-11-24 2018-05-24 Univ Degli Studi Genova Processo di sintesi a freddo di nanoparticelle da fasi aerosolizzate e impianto per la sua attuazione

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