Method for treatment of fibers with ozone-steam mixtures
AssigneeThe United States of America as represented by the Secretary of Agriculture
InventorWalter J. Thorsen
Life of this patent
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Abstract
Fibers are treated with ozone-steam mixtures by conveying them through an open-ended chamber having a horizontal middle section substantially elevated with respect to the open chamber end. The fibers are exposed to the ozone-steam mixture in the horizontal middle section wherein the ozone-steam mixture is centrally introduced. An apparatus for carrying out this method includes an open-ended chamber having a horizontal middle section substantially elevated with respect to the open chamber end. Also included are means for moving the substances through the chamber and means for supplying an ozone-steam mixture to the horizontal middle region of the chamber.
Claims4
A method for treating fibers with an ozone-steam mixture, which comprises
- (a) conveying the substance through an open-ended chamber having a horizontal middle section,
- (b) centrally introducing the ozone-steam mixture in said horizontal middle section,
- (c) exposing the fibers to the ozone-steam mixture in said horizontal middle section, and
- (d) confining said ozone-steam mixture within said middle section by maintaining the bottom of said section about 15-45 centimeters above the top of the open chamber end.
Dependencies are inferred from the claim text.