| INFLUENCE OF NON-PROCESS ELEMENTS ON REED PULP'S CHARACTERS DURING OXYGEN DELIGNIFICATION |
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| 作者姓名： | Hui Li Youming Li Yanjin Bi Yu ZhaoState Key Laboratory of Pulp and Paper Engineering South China University of Technology Guang Zhou |
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| 作者单位： | Hui Li Youming Li，Yanjin Bi，Yu ZhaoState Key Laboratory of Pulp and Paper Engineering，South China University of Technology，Guang Zhou，510640 |
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| 摘 要： | INTRODUCTIONOxygen delignification is widely used in many bleached pulp-grade operation to diminish the levels of residual lignin in kraft1]. The chemistry of oxygen delignification has undergone a renaissance in the last decade.Although the chemical structure and reactivity of residual lignin play a role in its effective removal, a variety of metal ions, frequently refers to as non-process elements(NPEs), they are either originated in pulp or introduced are also suggested to strongly a…
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INFLUENCE OF NON-PROCESS ELEMENTS ON REED PULP'S CHARACTERS DURING OXYGEN DELIGNIFICATION |
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| Hui Li Youming Li,Yanjin Bi,Yu ZhaoState Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guang Zhou,.INFLUENCE OF NON-PROCESS ELEMENTS ON REED PULP''''S CHARACTERS DURING OXYGEN DELIGNIFICATION[J].Journal of Tianjin University of Science & Technology,2004(Z2). |
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| Authors: | Hui Li Youming Li Yanjin Bi Yu ZhaoState Key Laboratory of Pulp and Paper Engineering South China University of Technology Guang Zhou |
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| Institution: | Hui Li Youming Li,Yanjin Bi,Yu ZhaoState Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guang Zhou,510640 |
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| Abstract: | A series of Reed Pulps were prepared in which the level of Non-Process Elements(NPEs), including calcium, manganese,copper,iron were seclectively enriched and depleted, these pulps were then oxygen delignification,and the pulps were characterized according to kappa number,viscosity,brightness. The results indicated that the enrichment of NPEs have an important effulence on delignification,pulp viscosity and brightness, iron is the most harmful during oxygen delignification but manganese is just like a kind of aid and can enhance brightness and delignification. |
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| Keywords: | Non-process elements oxygen delignification reed pulp characters |
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