To efficiently remove zinc from methanol contaminated during transportation or storage by placing a filter and an ion exchange resin at an inlet or an outlet line of a methanol transporting means or a storing apparatus.
A filter and an ion exchange resin pipe are placed at an inlet or an outlet line of a methanol transporting means or a storing apparatus and methanol is passed through the filter, etc. The filter is preferably e.g. a Teflon (R) membrane filter having a pore diameter of ≤10μm. The use of an easily detachable cartridge filter is preferable for industrial use. The ion exchange resin pipe is preferably a single pipe containing a mixture of a styrene-based sulfonic acid-type strongly acidic cation exchange resin and a styrene-based quaternary ammonium-type strongly basic anion exchange resin. The flow rate of the methanol through the filter and the ion exchange resin is preferably 50-500Hr-1 in terms of liquid space velocity.
TAMURA YUTAKA
KAYAMA TAKASHI
