DEP0049404DA - Process for drying goods sensitive to oxidation, especially hardwood - Google Patents
Process for drying goods sensitive to oxidation, especially hardwoodInfo
- Publication number
- DEP0049404DA DEP0049404DA DEP0049404DA DE P0049404D A DEP0049404D A DE P0049404DA DE P0049404D A DEP0049404D A DE P0049404DA
- Authority
- DE
- Germany
- Prior art keywords
- oxidation
- drying
- drying goods
- especially hardwood
- hardwood
- 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
Links
- 238000001035 drying Methods 0.000 title claims description 10
- 239000011121 hardwood Substances 0.000 title claims description 4
- 238000000034 method Methods 0.000 title claims description 4
- 230000003647 oxidation Effects 0.000 title claims description 4
- 238000007254 oxidation reaction Methods 0.000 title claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 claims 1
- 238000002845 discoloration Methods 0.000 description 3
- FFRBMBIXVSCUFS-UHFFFAOYSA-N 2,4-dinitro-1-naphthol Chemical compound C1=CC=C2C(O)=C([N+]([O-])=O)C=C([N+]([O-])=O)C2=C1 FFRBMBIXVSCUFS-UHFFFAOYSA-N 0.000 description 1
- 240000000731 Fagus sylvatica Species 0.000 description 1
- 235000010099 Fagus sylvatica Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Description
Bei der Trocknung beispielsweise von Hartholz ist nach einigen Stunden eine Verfärbung des Trockengutes festzustellen. Beispielsweise wird Eiche dunkelgrau, Buche rötlich bis violett. Diese Verfärbung mindert häufig den Wert des Trockengutes. Man erwartet beispielsweise von einem Parkettboden eine goldgelbe und keine dunkelgraue Farbe. Die Verfärbung ist auf einen Oxydationsvorgang zurückzuführen. Bestimmte Bestandteile des Trockengutes nehmen Sauerstoff aus der Luft auf und verbinden sich mit ihm.When drying hardwood, for example, discoloration of the dry goods can be observed after a few hours. For example, oak turns dark gray, beech reddish to purple. This discoloration often reduces the value of the dry goods. For example, a parquet floor is expected to be golden yellow and not dark gray. The discoloration is due to an oxidation process. Certain components of the dry material absorb oxygen from the air and combine with it.
Die Erfindung betrifft ein Verfahren, welchem die oben erwähnte Erkenntnis zu Grunde liegt, und das zur Trocknung oxydationsempfindlicher Güter, insbesondere Hartholz gemäß der Erfindung derart durchgeführt wird, daß der Sauerstoff auf mechanischem Weg, beispielsweise durch Einleitung leichterer oder schwererer Gase in die Trockenkammer oder auf chemischen Weg aus der gasdicht verschliessbaren Trockenkammer zu Beginn der Trocknung verdrängt wird.The invention relates to a method, which is based on the above-mentioned knowledge, and which is carried out for drying oxidation-sensitive goods, in particular hardwood according to the invention in such a way that the oxygen is mechanically, for example by introducing lighter or heavier gases into the drying chamber or on chemical way out of the gas-tight closable drying chamber at the beginning of the drying is displaced.
Claims (1)
Family
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