Method of applying green chelating agent in paper pulp hydrogen peroxide bleaching
The invention discloses a method of applying a green chelating agent in paper pulp hydrogen peroxide bleaching, and belongs to the technical fields of pulping and papermaking engineering. Specifically, after paper pulp is diluted to a concentration of 5%-10%, IDS with a mass percentage of 0.8%-1.2%...
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Main Authors | , , , , |
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Format | Patent |
Language | Chinese English |
Published |
01.05.2018
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Subjects | |
Online Access | Get full text |
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Summary: | The invention discloses a method of applying a green chelating agent in paper pulp hydrogen peroxide bleaching, and belongs to the technical fields of pulping and papermaking engineering. Specifically, after paper pulp is diluted to a concentration of 5%-10%, IDS with a mass percentage of 0.8%-1.2% of the absolute dry content of the paper pulp is added, mixing is performed uniformly, at the same time the chelation treatment temperature is controlled at 60-80 DEG C, and the reaction time is 50min-70min. According to the method provided by the invention, the IDS is used as the chelating agent for chelating treatment and pulp hydrogen peroxide bleaching, the bleaching effect is equivalent to that of hydrogen peroxide bleaching used conventional chelating agent EDTA, the whiteness of bagasse pulp can be improved by 2-4%, the tensile index can be improved by 5-6%, the burst resistant index can be improved by 20-23%, and the tear index can be improved by 8-10%; and the whiteness of waste paper deinking pulp can be |
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Bibliography: | Application Number: CN201711182714 |