B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
183/0.5
B29C 35/02 (2006.01) B01D 5/00 (2006.01) F26B 21/14 (2006.01) F26B 25/00 (2006.01)
Patent
CA 1190484
CONTROLLED INERTING OF CHAMBER ATMOSPHERES ABSTRACT OF THE DISCLOSURE A chamber such as a curing oven or drier is inerted during the curing of solvent borne resin coatings with the solvent vapor formed wherein being withdrawn together with inert gas at a substantially constant flow rate. The withdrawn gas stream is supplied to a condensation unit to enable re- covery of solvent and the noncondensed gas discharged from the condensation unit is returned to the oven at a flow rate which may be varied so as to maintain a material balance with respect to the oven atmosphere. Appropriate adjustments are made in response to changes occurring in the oven solvent vapor and/or oxygen concentration without disturbing the material balance mentioned above while the oven atmosphere is withdrawn it a substantially constant flow rate. A plurality of ovens may be connected to a single condensation unit and upon detecting undesired conditions such as excessive oxygen levels in one oven, the same may be separately isolated from the condensation unit. BACKGROUND OF THE INVENTION The present invention relates to methods and apparatus for recovering solvent vapor from an oven or the like and more particularly to such methods and apparatus wherein a material balance is maintained with respect to the oven atmosphere. Prior art techniques for recovering solvent vapor from curing ovens during the curing of solvent borne resin coatings typically include the withdrawal of oven atmosphere and the condensation of solvent vapor therefrom. In certain processes, the oven atmosphere is comprised essentially of inert gas and
426789
Gowling Lafleur Henderson Llp
The Boc Group Inc.
LandOfFree
Controlled inerting of chamber atmospheres does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Controlled inerting of chamber atmospheres, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Controlled inerting of chamber atmospheres will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1256311