CH226503A - Accelerated drying process. - Google Patents
Accelerated drying process.Info
- Publication number
- CH226503A CH226503A CH226503DA CH226503A CH 226503 A CH226503 A CH 226503A CH 226503D A CH226503D A CH 226503DA CH 226503 A CH226503 A CH 226503A
- Authority
- CH
- Switzerland
- Prior art keywords
- volatile organic
- organic acid
- acid
- drying
- drying process
- Prior art date
Links
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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Description
Procédé de séchage accéléré. Le séchage artificiel des matières, en par ticulier à structure capillaire, se heurte tou jours; au gros obstacle -de la rétention de l'eau.
Les procédés usuels de séchage ;à l'aide de gaz chauds conduisent à une consommation exagérée de combustible.
Lorsque ces matières ne peuvent être désagrégées par action mécanique, comme dans le cas de produits relativement ténus ou dans ,le cas de matières qui ne peuvent être déchiquetées sans perdre leur valeur mar chande, on doit recourir à d'autres moyens pour activer leur processus -de séchage si l'on tient à utiliser judicieusement les calories que dégagent les gaz de séchage.
Dans le procédé de séchage par gaz chaud selon la présente invention, on effectue le séchage en présence d'un acide organique volatil.
Des expériences ont en effet .démontré que l'on parvient à sécher plus rapidement des matières telles que les fourrages: verts, lé- gumes, fruits et toutes les matières de nature ligneuse ou fibreuse d'origine végétale ou synthétique, si le séchage se fait en présence d'un acide organique volatil.
Le procédé s'applique aussi à ,des matières qui ne sont pas de provenance organique. Parmi les acides organiques utilisables, on peut employer spécialement l'acide for mique et l'acide acétique.
Ces acides, sont @de nature telle que, lors qu'il s'agit d'aliments, ils ne peuvent porter préjudice à la digestibilité des produits sé chés. Au contraire, la présence de traces de ces acides .dans les produits séchés ne peut être qu'un facteur améliorant la conservabi- lité des produits séchés et peut même éloi gner les rongeurs et les ferments.
La présence de l'acide organique volatil lors du séchage peut être assurée de .diffé rentes façons, par exemple: 10 par immersion -des matières à sécher dans une solution d'acide ou par vaporisation d'acide sur les matières à sécher, 20 par vaporisation d'acide ou formation d'un brouillard à l'intérieur de l'installation de séchage, <B>30</B> par .séchage à l'aide d'un courant d'air chaud: a) charbé de vapeurs d'acide, b) chargé de brouillard d'acide.
Accelerated drying process. The artificial drying of materials, in particular with a capillary structure, always comes up against; the big obstacle - water retention.
The usual drying processes using hot gases lead to an excessive consumption of fuel.
When these materials cannot be broken down by mechanical action, as in the case of relatively thin products or in the case of materials which cannot be shredded without losing their market value, other means must be used to activate their process. -drying if one wishes to judiciously use the calories given off by the drying gases.
In the hot gas drying process according to the present invention, the drying is carried out in the presence of a volatile organic acid.
Experiments have in fact shown that it is possible to dry materials such as fodder more quickly: greens, vegetables, fruits and all materials of a woody or fibrous nature of vegetable or synthetic origin, if the drying takes place. made in the presence of a volatile organic acid.
The process also applies to materials which are not of organic origin. Among the organic acids which can be used, there may especially be employed formal acid and acetic acid.
These acids are of such a nature that, when it comes to food, they cannot prejudice the digestibility of the dried products. On the contrary, the presence of traces of these acids in the dried products can only be a factor improving the preservability of the dried products and can even keep rodents and ferments away.
The presence of the volatile organic acid during drying can be ensured in various ways, for example: by immersing the materials to be dried in an acid solution or by vaporizing the acid on the materials to be dried, 20 by vaporization of acid or formation of a mist inside the drying installation, <B> 30 </B> by drying with a stream of hot air: acid vapors, b) charged with acid mist.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH226503T | 1941-09-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH226503A true CH226503A (en) | 1943-04-15 |
Family
ID=4454597
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH226503D CH226503A (en) | 1941-09-23 | 1941-09-23 | Accelerated drying process. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH226503A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0402530A1 (en) * | 1989-06-12 | 1990-12-19 | Agfa-Gevaert N.V. | A process of cooling a heated polyethylene terephthalate film |
-
1941
- 1941-09-23 CH CH226503D patent/CH226503A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0402530A1 (en) * | 1989-06-12 | 1990-12-19 | Agfa-Gevaert N.V. | A process of cooling a heated polyethylene terephthalate film |
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