EP0286880B1 - Dispositif de séchage pour marchandises en vrac - Google Patents

Dispositif de séchage pour marchandises en vrac Download PDF

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Publication number
EP0286880B1
EP0286880B1 EP88104688A EP88104688A EP0286880B1 EP 0286880 B1 EP0286880 B1 EP 0286880B1 EP 88104688 A EP88104688 A EP 88104688A EP 88104688 A EP88104688 A EP 88104688A EP 0286880 B1 EP0286880 B1 EP 0286880B1
Authority
EP
European Patent Office
Prior art keywords
liquid
drying
water
drying chamber
moisture
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
EP88104688A
Other languages
German (de)
English (en)
Other versions
EP0286880A1 (fr
Inventor
Siegfried Dr. Rer. Nat. Dipl.-Chem. Birkle
Johann Gehring
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.)
Siemens AG
Original Assignee
Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT88104688T priority Critical patent/ATE67024T1/de
Publication of EP0286880A1 publication Critical patent/EP0286880A1/fr
Application granted granted Critical
Publication of EP0286880B1 publication Critical patent/EP0286880B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/005—Drying solid materials or objects by processes not involving the application of heat by dipping them into or mixing them with a chemical liquid, e.g. organic; chemical, e.g. organic, dewatering aids
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
    • C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
    • C23G5/04—Apparatus

Definitions

  • the invention relates to a drying device for pourable material, in particular for pretreatment for the galvanic deposition of aluminum from aprotic, oxygen and water-free, organoaluminum electrolytes, with a helical vibratory conveyor for transporting the pourable material through a drying room and with one contained in the drying room, not with Water-miscible liquid, by means of which moisture adhering to the pourable material can be displaced and discharged to the outside.
  • drying is to be understood as meaning the removal of moisture adhering to pourable material and in particular a drainage of the pourable material.
  • drying of pourable material is carried out, for example, in so-called drying cabinets, which are heated electrically, with gas or with steam and have several perforated transverse walls made of sheet metal one above the other. At the top of the drying cabinet are openings through which the warm, humid air can escape.
  • the electroplating devices are often also followed by drying devices in which the moisture is removed either by hot air or by fluorinated hydrocarbon baths which interact with ultrasound generators.
  • a drying device of the type mentioned in which a liquid is contained in the drying room which is specifically heavier than water and which displaces moisture adhering to the pourable material towards the bath surface.
  • the water that collects on the surface of the bath can then be drawn off to the outside.
  • the use of vibratory conveyors as a transport organ enables extremely gentle conveying of the pourable goods There is no fear of jammed goods.
  • the oscillations and vibrations required for the conveyance of the pourable material have an extremely positive effect on the drying process.
  • Aluminum deposited from aprotic, oxygen and water-free, organoaluminum electrolytes is characterized by its ductility, low pore density, corrosion resistance and anodizing ability. Since the entry of air by reaction with atmospheric oxygen and air humidity causes a considerable reduction in the conductivity and the service life of these electrolytes, the electroplating must be carried out in an air-tight galvanizing device. In order that the access of air can also be prevented during loading and unloading of this galvanizing device working in the absence of air, import and export locks are also required, which are designed as gas locks, as liquid locks or as combined gas-liquid locks and with means of conveyance for passing through the electroplating material are equipped. An aluminizing device of this type, working in the absence of air and provided with import and export locks, for the mass electroplating of pourable material is known, for example, from EP-A 0 070 011.
  • the aluminizing using aprotic, aluminum-organic electrolytes requires a particularly careful drainage of the alumni goods.
  • the moisture adhering to the aluminum material has to be removed as completely as possible in order not to impair the conductivity and service life of the aluminum-organic electrolytes.
  • neither atmospheric oxygen nor atmospheric moisture may be carried into the aluminizing device with the aluminizing material.
  • the invention has for its object to further improve the drying of pourable material in a generic drying device.
  • the prerequisites for this should be through effective drainage of bulk goods subsequent galvanic deposition of aluminum from aprotic, oxygen and water-free, organoaluminum electrolytes can be achieved.
  • the pourable material is conveyed with the help of a helical vibratory conveyor through a gas-tightly closable drying chamber which can be charged with an inert gas.
  • the dried material can then, without coming into contact with air, be introduced directly or via an import lock into a downstream treatment facility.
  • the drying device according to the invention is therefore particularly suitable for a subsequent electrodeposition of aluminum from aprotic, oxygen and water-free, organoaluminum electrolytes, in which case even an aqueous pretreatment of the aluminum material is made possible.
  • drying processes before or after electroplating are drying processes before or after electroplating, where the moisture to be removed can consist, for example, of aqueous pre- or post-treatment baths, electrolytes or lock fluids. Drying processes outside of electroplating technology, such as, for example, the metallization of pourable goods in a vacuum, the application of layers of paint or other embellishing or protective coatings, can likewise advantageously be carried out with the aid of drying devices according to the invention. Finally, the use of the drying devices according to the invention can also have the aim of regaining the moisture adhering to pourable material or of preventing this moisture from being released to the environment.
  • the use of a liquid that is specifically lighter than water has a significant influence on the quality of the drying or dewatering.
  • the moisture adhering to the pourable material is then displaced by the liquid during transport, whereupon it sinks to the bottom of the drying room and can be discharged from there to the outside.
  • a drying profile is created in the drying room, which ensures progressive drying of the material as the conveying path through the liquid increases.
  • the liquid contains saturated hydrocarbons or cycloparaffins or aromatic hydrocarbons in the drying room.
  • Liquids of this type that are specifically lighter than water are particularly well suited to displacing moisture or water.
  • the conveyor track of the vibratory conveyor is provided with a perforation at least in some areas.
  • a spray device for spraying a liquid at least in the end region of the conveyor path of the vibratory conveyor, this liquid being intended to wash off any residual moisture that may still be adhering to the material.
  • a condensation device is then preferably arranged in the space above the level of the liquid, the condensate formed in the condensation device being able to be fed to the spray device.
  • the same liquid is then used as the spray liquid, which displaces the moisture in the form of a bath. Since this bath is then heated by an internal heating device or externally in circulation, the steam rising from the bath also rinses off any residual moisture still adhering to the material.
  • the drawing shows a longitudinal section through a tower-shaped drying device for pourable material G, which is, for example, bolts, nuts, screws, spacer bushings and the like.
  • the drying of the material G which has been pretreated, for example, in aqueous baths, is intended to enable subsequent electrodeposition of aluminum from aprotic, oxygen-free and water-free, organoaluminum electrolytes.
  • the drying of the goods G is carried out in a drying space Tr which can be closed gas-tight with the aid of an upper lid De and which is filled with an inert gas such as e.g. Nitrogen is applied, the supply of this inert gas being indicated by an arrow Ia.
  • an inert gas such as e.g. Nitrogen
  • the material G to be dried is introduced into the lower region of the drying space Tr via a downpipe Frl, the downpipe Frl being designed as a gas lock that can be closed on the inlet side by a cover Dl.
  • the supply of inert gas into the downpipe Frl and the discharge of this inert gas A vertical branch Az of the downpipe Frl is shown by arrows Ig.
  • the pourable material G introduced via the downpipe Frl falls onto the lower end of the conveying path Fb of an oscillating conveyor arranged within the drying space Tr and referred to overall as Sf.
  • the material G is transported upwards on the conveyor track Fb, which is designed as a vibrating trough and spirally upwards, and then falls into the funnel-shaped upper end of a downpipe Fr2 leading out of the drying chamber Tr and closable by a cover D2.
  • the downpipe Fr likewise designed as a gas lock and closable on the outlet side by a cover D3, is flushed with the inert gas entering the drying chamber Tr, the outlet of which is indicated by an arrow Ig.
  • a pretreatment device with an anhydrous treatment bath, a liquid lock or, if appropriate, an aluminizing device can then be connected to the downpipe Fr2.
  • the conveyor track Fb leading upwards in a helical manner inside the drying room Tr is attached to a centrally arranged support column Ts, the lower end of which is supported on the floor of the drying room Tr by a supporting plate Tp and several springs Fd and the upper end of which carries a vibrator V.
  • This vibrator V has a motor M which drives eccentric flywheels Ss arranged on both sides.
  • the drive axis Aa of the motor M is inclined at an angle of, for example, 45 ° to the horizontal, so that the unbalance of the flywheels Ss generates vibrations with a somewhat helical movement of the vibrator V of the support column Ts.
  • the drying room Tr there is a non-aqueous liquid Fl up to the level Sp, which displaces the moisture adhering to the material G.
  • This displacement effect is greatly promoted by the vibrations of the material G and to a certain extent also by the perforation P of the conveyor track Fb.
  • the perforation P is only indicated at one point in the drawing. Since the liquid Fl is lighter than water, the water displaced by the liquid Fl can be discharged from the floor area of the drying room Tr to the outside via a line L1, as is indicated by an arrow Pfl. In the area of the mirror Sp, the liquid F1 can optionally be supplemented from the outside via a line L1, as is indicated by an arrow Pf2.
  • any residual moisture still adhering to the product G is rinsed off with the aid of a spray device Se, which is only indicated in the drawing.
  • the spray liquid used is obtained from the liquid Fl contained in the drying room Tr.
  • this liquid Fl is heated so strongly externally in circulation or directly by a heater arranged in the drying room Tr that the liquid Fl partially evaporates and condenses again on a cooling device Ke arranged in the upper region of the drying room Tr.
  • the condensate Ko formed by the cooling device Ke is collected in a collecting trough Sr and fed to the spray device Se via a pump (not shown in the drawing).
  • the fact that the vapor rising from the liquid Fl comes into contact with the material G in the region above the mirror Sp also greatly enhances the drying process.
  • liquids F1 of the substance classes a) and b) are preferred.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Claims (7)

  1. Dispositif de séchage de produits en vrac, destiné notamment au prétraitement pour le dépôt par électrolyse d'aluminium dans des électrolytes organoaluminiques, aprotiques, exempts d'oxygène et anhydres, comprenant un transporteur oscillant hélicoïdal destiné à transporter les produits en vrac dans une chambre de séchage et un liquide non miscible à l'eau, qui est contenu dans la chambre de séchage et par lequel de l'humidité adhérant aux produits en vrac peut être repoussée et évacuée à l'extérieur,
       caractérisé en ce que,
    - la chambre de séchage (Tr) peut être fermée d'une manière étanche au gaz et peut être alimentée en un gaz inerte (Ig),
    - le liquide (F1) contenu dans la chambre de séchage (Tr) a une densité inférieure à celle de l'eau, et
    - l'humidité refoulée par le liquide (F1) peut être évacuée à l'extérieur par le fond de la chambre de séchage (Tr).
  2. Dispositif de séchage suivant la revendication 1,
       caractérisé
       en ce que des hydrocarbures saturés ou des paraffines, ou des hydrocarbures aromatiques sont contenus comme liquide (F1) dans la chambre de séchage (Tr).
  3. Dispositif de séchage suivant la revendication 1 ou 2,
       caractérisé
       en ce qu'au moins les pas inférieurs du transporteur oscillant (Sf) hélicoïdal sont disposés en-dessous du niveau (Sp) du liquide (F1) contenu dans la chambre de séchage (Tr).
  4. Dispositif de séchage suivant l'une des revendications précédentes,
       caractérisé,
       en ce que la voie de transport (Fb) du transporteur oscillant (Sf) est munie, au moins par endroits, d'une perforation (P).
  5. Dispositif de séchage suivant l'une des revendications précédentes,
       caractérisé,
       en ce que la voie de transport (Fb) du transporteur oscillant (Sf) dépasse au-dessus du niveau (Sp) du liquide (F1) contenu dans la chambre de séchage (Tr).
  6. Dispositif de séchage suivant l'une des revendications précédentes,
       caractérisé,
       en ce qu'au moins dans la région d'extrémité de la voie de transport (Fb) du transporteur oscillant (Sf) est prévu un dispositif de projection (Se) destiné à projeter un liquide.
  7. Dispositif de séchage suivant l'une des revendications 4 à 9 et suivant la revendication 10,
       caractérisé,
       en ce que dans l'espace au-dessus du niveau (Sp) du liquide (F1) est prévu un dispositif de condensation (Ke), et en ce que le produit condensé (Ko) formé dans le dispositif de condensation (Ke) peut être envoyé au dispositif de projection (Se).
EP88104688A 1987-04-16 1988-03-23 Dispositif de séchage pour marchandises en vrac Expired - Lifetime EP0286880B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88104688T ATE67024T1 (de) 1987-04-16 1988-03-23 Trockeneinrichtung fuer schuettfaehiges gut.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3713069 1987-04-16
DE3713069 1987-04-16

Publications (2)

Publication Number Publication Date
EP0286880A1 EP0286880A1 (fr) 1988-10-19
EP0286880B1 true EP0286880B1 (fr) 1991-09-04

Family

ID=6325853

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88104688A Expired - Lifetime EP0286880B1 (fr) 1987-04-16 1988-03-23 Dispositif de séchage pour marchandises en vrac

Country Status (6)

Country Link
US (1) US4876801A (fr)
EP (1) EP0286880B1 (fr)
JP (1) JPS63283701A (fr)
AT (1) ATE67024T1 (fr)
CA (1) CA1306352C (fr)
DE (1) DE3864560D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008037067A1 (de) * 2008-08-08 2010-02-11 Turbo-Clean Gmbh Schwingförderer mit Ultraschallreinigung

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2003859A1 (fr) * 1989-02-01 1990-08-01 David Alan Dickinson Technique de nettoyage des objets avec solvant combustible
CA2011397C (fr) * 1989-03-06 1994-07-12 Michael T. Mittag Methode et appareil de nettoyage de dispositifs electroniques et autres materiels assimiles
JP2922635B2 (ja) * 1990-11-29 1999-07-26 スピードファムクリーンシステム株式会社 温純水乾燥方法及び装置
US5105557A (en) * 1991-03-11 1992-04-21 Vadasz Jozsef T System for rapidly drying parts
US5464480A (en) * 1993-07-16 1995-11-07 Legacy Systems, Inc. Process and apparatus for the treatment of semiconductor wafers in a fluid
US5911837A (en) * 1993-07-16 1999-06-15 Legacy Systems, Inc. Process for treatment of semiconductor wafers in a fluid
KR100456527B1 (ko) * 2001-12-11 2004-11-09 삼성전자주식회사 마란고니 효과를 증대시키기 위한 건조 장비 및 건조 방법
WO2003091163A2 (fr) * 2002-04-24 2003-11-06 Liprie Randal C Systeme d'evaporation de la chaleur residuelle par cogeneration et procede de traitement des eaux usees faisant intervenir la recuperation de la chaleur residuelle

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US24281A (en) * 1859-06-07 Corn-huskek
BE343184A (fr) *
USRE24281E (en) 1957-02-26 Degreasing apparatus
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US3279087A (en) * 1963-11-08 1966-10-18 Phillips Petroleum Co Solid polymer and liquid diluent separator apparatus and method
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US3386181A (en) * 1966-11-15 1968-06-04 Du Pont Method of removing water and apparatus therefor
GB1354117A (en) * 1970-07-02 1974-06-05 Boulton Ltd William Drying or degreasing of parts
US3733710A (en) * 1971-07-13 1973-05-22 Detrex Chem Ind Method for drying metal parts
FR2147523A5 (en) * 1971-07-26 1973-03-09 Cucco Georges Unitary degreasing appts - avoids exhausting noxious solvent fumes into the ambient atmos
US3982325A (en) * 1975-04-30 1976-09-28 Kimberly-Clark Corporation Method of solvent drying
DE3127390A1 (de) * 1981-07-10 1983-02-10 Siemens AG, 1000 Berlin und 8000 München Galvanisiereinrichtung
US4501073A (en) * 1983-01-24 1985-02-26 Nuclear Metals, Inc. Apparatus and method for dehydrating metal pieces
WO1986002434A1 (fr) * 1984-10-10 1986-04-24 Duval Leonard A Procede et appareil de sechage de materiaux solides par deplacement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008037067A1 (de) * 2008-08-08 2010-02-11 Turbo-Clean Gmbh Schwingförderer mit Ultraschallreinigung
DE102008037067B4 (de) * 2008-08-08 2012-03-29 Turbo-Clean Gmbh Schwingförderer mit Ultraschallreinigung

Also Published As

Publication number Publication date
EP0286880A1 (fr) 1988-10-19
ATE67024T1 (de) 1991-09-15
CA1306352C (fr) 1992-08-18
US4876801A (en) 1989-10-31
DE3864560D1 (de) 1991-10-10
JPS63283701A (ja) 1988-11-21

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