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Oxygen delignification intensified by additives for sulfate bamboo pulp

Lei Xing

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Abstract

The optimization of the process of oxygen delignification intensified by OC additives and ODQP bleaching in sulfate bamboo pulping were investigated. The results show that in consideration of the bamboo pulp delignification rate after oxygen delignification rate and viscosity reduction rate, the optimization technological conditions for oxygen delignification of bamboo pulp are: additive dosage 0.1%, alkali charge 4%, MgSO4 dosage 0.5%, temperature 100℃, reaction time 60min and oxygen pressure 0.6 MPa. After ODQP bleaching , the whiteness of bamboo pulp is reached 83.4%ISO, viscosity 810cm3/g and color reversion value 0.63.

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What this paper is about

The optimization of the process of oxygen delignification intensified by OC additives and ODQP bleaching in sulfate bamboo pulping were investigated. The results show that in consideration of the bamboo pulp delignification rate after oxygen delignification rate and viscosity reduction rate, the optimization technological conditions for oxygen delignification of bamboo pulp are: additive dosage 0.1%, alkali charge 4%, MgSO4 dosage 0.5%, temperature 100℃, reaction time 60min and oxygen pressure 0.6 MPa. After ODQP bleaching , the whiteness of bamboo pulp is reached 83.4%ISO, viscosity 810cm3/g and color reversion value 0.63.

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Available abstract

The optimization of the process of oxygen delignification intensified by OC additives and ODQP bleaching in sulfate bamboo pulping were investigated. The results show that in consideration of the bamboo pulp delignification rate after oxygen delignification rate and viscosity reduction rate, the optimization technological conditions for oxygen delignification of bamboo pulp are: additive dosage 0.1%, alkali charge 4%, MgSO4 dosage 0.5%, temperature 100℃, reaction time 60min and oxygen pressure 0.6 MPa. After ODQP bleaching , the whiteness of bamboo pulp is reached 83.4%ISO, viscosity 810cm3/g and color reversion value 0.63.

Key concepts: Bamboo, Pulp (tooth), Oxygen, Chemistry, Pulp and paper industry, Soda pulping, Sulfate, Kraft process

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