EP0123812B1 - Procédé et appareil pour le séchage par évaporation d'un mélange colloidal organique de la matière solide et de l'eau - Google Patents

Procédé et appareil pour le séchage par évaporation d'un mélange colloidal organique de la matière solide et de l'eau Download PDF

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Publication number
EP0123812B1
EP0123812B1 EP84101975A EP84101975A EP0123812B1 EP 0123812 B1 EP0123812 B1 EP 0123812B1 EP 84101975 A EP84101975 A EP 84101975A EP 84101975 A EP84101975 A EP 84101975A EP 0123812 B1 EP0123812 B1 EP 0123812B1
Authority
EP
European Patent Office
Prior art keywords
drying
steam
mixture
solid
boiling
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
Application number
EP84101975A
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German (de)
English (en)
Other versions
EP0123812A1 (fr
Inventor
Karl Dr. Ing. Tils
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.)
WEBER & SEELAENDER
Original Assignee
Weber & Seelander
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6192245&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0123812(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Weber & Seelander filed Critical Weber & Seelander
Priority to AT84101975T priority Critical patent/ATE20539T1/de
Publication of EP0123812A1 publication Critical patent/EP0123812A1/fr
Application granted granted Critical
Publication of EP0123812B1 publication Critical patent/EP0123812B1/fr
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D13/00—Making of soap or soap solutions in general; Apparatus therefor
    • C11D13/26—Drying
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/10—Temperature; Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat

Definitions

  • the invention relates to a process for the evaporation drying of a colloidal organic solid-water mixture with at least two drying steps, the dry material / steam mixture being brought to an overpressure by boiling the liquid in the first drying step and then expanded.
  • Such an organic solid-water mixture of high viscosity and high solids content can e.g. be formed by water-soluble sodium or potassium salts of fatty acids, soaps for cleaning purposes or metal soaps.
  • drying is necessary to reduce the water content, the dried product being given the necessary physical and chemical properties by mixing with additives, homogenizing or refining, extruding and pressing.
  • vacuum relaxation which is carried out, for example, at 40 mbar
  • one heat exchanger stage can be sufficient, since the drying effect in the vacuum container is greater than with atmospheric relaxation.
  • the soap is already cooled in the vacuum process, i.e. freezes.
  • a disadvantage of vacuum expansion is that all of the steam produced must be removed by condensation. Very high cooling water consumption and corresponding condensation apparatus are therefore required, both of which make the process more expensive.
  • the invention is based on the object of designing a method of the type mentioned at the outset in such a way that the problems in the relaxation of the soap-steam mixture are reduced.
  • this object is achieved in that the mixture is transported from the first drying step to the second drying step while maintaining the boiling pressure, the steam volume being largely separated and expanded from the dry material.
  • the boiling temperature of the soap in the heat exchanger is preferably between 110 and 145 ° C.
  • the invention further relates to a device for performing the method described above.
  • the device also serves to avoid the disadvantages that have previously occurred.
  • a pressure-maintaining valve is arranged in the device according to the invention at the end of the first drying stage. In the manner described, this ensures that the excess pressure exceeding a set pressure is released, as a result of which a considerable part of the steam in the drying stage is separated from the soap and expanded.
  • the basic soap is pumped into a first heat exchanger 2 via a pump 1.
  • the basic soap is heated in this heat exchanger 2 and brought to the boil. This creates an overpressure in the heat exchanger 2.
  • the heated soap is pumped at a certain boiling pressure into a second heat exchanger 4, where the boiling process is repeated.
  • the soap passes through a valve 6 into a relaxation tank 7, in which the soap-steam mixture is released into the atmosphere, whereby the last desired degree of drying (for example to 10 to 11 ° water content) is achieved.
  • a pressure holding valve 8 is arranged at the upper end of the first heat exchanger 2 and a pressure holding valve 9 is arranged at the upper end of the second heat exchanger 4.
  • the basic soap introduced into the first heat exchanger 2 is heated up to a boiling pressure set via the pressure holding valve 8.
  • the steam going beyond this is blown off via the pressure holding valve 8.
  • the soap is continuously advanced and introduced into the second heat exchanger 4 via the pump 3. There the process is repeated, which has already taken place in the first heat exchanger 2.
  • the pressure control valve 9 can be set to the same boiling pressure as the pressure control valve 8.
  • FIG. 2 shows an arrangement with only one heat exchanger 2 ′ and a vacuum expansion tank 10, from which the steam is led via a line 11, which leads to a condensation stage, and the dried soap is discharged via a screw conveyor 12.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Microbiology (AREA)
  • Wood Science & Technology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Detergent Compositions (AREA)
  • Drying Of Solid Materials (AREA)

Claims (8)

1. Procédé de séchage par évaporation d'un mélange organique colloïdal solide-eau comportant au moins deux étapes de séchage, la première étape de séchage consistant à mettre le mélange produit sec-vapeur en surpression, par ébullition du liquide, puis à le détendre, caractérisé en ce que, tout en maintenant la pression d'ébullition, on fait passer le mélange de la première étape à la deuxième étape de séchage, le volume de vapeur étant largement séparé du produit sec et détendu.
2. Procédé selon la revendication 1, caractérisé en ce que la température d'ébullition du liquide pendant la première étape de séchage se situe de préférence entre 110 et 145° C.
3. Procédé selon l'une des revendications 1 ou 2, caractérisé en ce que dans la dernière étape de séchage la vapeur d'eau et le produit sec sont détendus ensemble dans un récipient de détente (7, 10).
4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que la vapeur évacuée lors des étapes de séchage est introduite dans le récipient de détente (7, 10) du dernier étage.
5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que l'on procède à plusieurs étapes de séchage avec la même pression d'ébullition et que la vapeur d'eau extraite est détendue au cours d'une même phase de détente.
6. Dispositif de séchage par évaporation d'un mélange organique colloïdal solide-eau comportant au moins deux étages de séchage (2, 4, 7; 2', 10) reliés l'un à l'autre par une pompe (3, 5; 5'), le mélange vapeur-produit sec étant mis, au premier étage de séchage (2, 4; 2'), en surpression par ébullition de la vapeur, puis détendu, caractérisé en ce qu'à l'extrémité supérieure du premier étage de séchage (2; 2') est disposée une soupape de maintien de la pression (8; 8').
7. Dispositif selon la revendication 6, caractérisé en ce que le dernier étage de séchage est constitué d'un récipient de détente (7) relié à la pression atmosphérique.
8. Dispositif selon la revendication 6, caractérisé en ce que le dernier étage de séchage est constitué d'un récipient (10) de détente sous vide.
EP84101975A 1983-03-02 1984-02-24 Procédé et appareil pour le séchage par évaporation d'un mélange colloidal organique de la matière solide et de l'eau Expired EP0123812B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84101975T ATE20539T1 (de) 1983-03-02 1984-02-24 Verfahren und vorrichtung zur verdampfungstrocknung eines kolloidalen organischen feststoff-wassergemisches.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3307281 1983-03-02
DE3307281A DE3307281C2 (de) 1983-03-02 1983-03-02 Verfahren und Vorrichtung zur Verdampfungstrockung eines kolloidalen organischen Feststoff-Wassergemisches

Publications (2)

Publication Number Publication Date
EP0123812A1 EP0123812A1 (fr) 1984-11-07
EP0123812B1 true EP0123812B1 (fr) 1986-06-25

Family

ID=6192245

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84101975A Expired EP0123812B1 (fr) 1983-03-02 1984-02-24 Procédé et appareil pour le séchage par évaporation d'un mélange colloidal organique de la matière solide et de l'eau

Country Status (3)

Country Link
EP (1) EP0123812B1 (fr)
AT (1) ATE20539T1 (fr)
DE (2) DE3307281C2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6058623A (en) * 1993-09-24 2000-05-09 The Chemithon Corporation Apparatus and process for removing volatile components from a composition
ZA945188B (en) * 1993-09-24 1995-03-10 Chemithon Corp Process for removal of solvents from detergent pastes.
US5723433A (en) * 1993-09-24 1998-03-03 The Chemithon Corporation Sovent removal process

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1271883B (de) * 1963-08-10 1968-07-04 Ind G M B H Verfahren und Anlage zum Trocknen von Seifenmasse
GB1018764A (en) * 1963-12-23 1966-02-02 Procter & Gamble Ltd Soap drying process
DE3100381A1 (de) * 1981-01-09 1982-08-12 Magyar Aluminiumipari Tröszt, 1133 Budapest Verdampfungsanlage

Also Published As

Publication number Publication date
DE3307281A1 (de) 1984-09-06
DE3307281C2 (de) 1984-12-20
EP0123812A1 (fr) 1984-11-07
ATE20539T1 (de) 1986-07-15
DE3460252D1 (en) 1986-07-31

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