PATENT ASSIGNEE'S COUNTRY | Sweden |
UPDATE | 05.00 |
PATENT ASSIGNEE | This data is not available for free |
PATENT CLAIMS |
Method of treating cellulose pulp comprising the steps - Delignifying the pulp by contacting the pulp with first gas mixt comprising oxygen - Washing the delignified pulp by contacting the pulp with a wash liquid - Bleaching the washed pulp by contacting the pulp with a second gas mixt comprising ozone & oxygen - Regenerating the second gas mixt from the bleaching step by contacting the second gas mixt with the wash liquid from the washing step, said regeneration of the second gas mixt converting CO2 in the second gas mixt into a carbonate - Delivering at least a portion of said regenerated second gas mixt in the form of the first gas mixt to the delignifying step, & - Delivering at least a portion of the wash liquid from the regenerating step to the wash step |
PATENT PHOTOCOPY | Available on request |
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