Continuous process for production of cellulose pulp from grass-like feedstock

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United States of America Patent

PATENT NO 11976416
APP PUB NO 20210355636A1
SERIAL NO

17386557

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Abstract

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An improved continuous process for production of cellulose from glass-like feedstock, which includes:

    (i) cooking of comminuted grass-like feedstock in white liquor which contains 0.5-2.0% w/w NaOH and 0.5-25.0% w/w NaCl at 95-100° C.;(ii) bleaching process of the brown cellulose in the white liquor of the same composition with oxygen (O2) and chlorine (Cl2) at 70-100° C., yielding bleached cellulose pulp; where,(iii) lignin and other side-products are separated by continuous electrolysis, where the white liquor is regenerated, together with O2 and Cl2 for the bleaching purpose, thereby closing the cycle of the process.

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Patent Owner(s)

Patent OwnerAddress
MIKULIC MARINKO10000 ZAGREB

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Mikulic, Marinko Zagreb, HR 2 3

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