Continuous Chemical Supplement, a Novel Solution to Improve the Efficiency of Peroxide Bleaching

DOI

10.2991/ifeesm-17.2018.150How to use a DOI?

Keywords

Continuous chemical supplement; Bleaching efficiency; peroxide decomposition; Poplar chemi-mechanical pulp

Abstract

In conventional peroxide bleaching of chemi-thermomechanical pulp (CTMP), the bleaching efficiency of hydrogen peroxide (H2O2) is far lower than its expected level. In this paper, a novel bleaching method is proposed to improve the H2O2 bleaching efficiency of poplar CTMP. This novel method, namely Continuous Chemical Supplement (CCS), maintained constant concentrations of H2O2 and total alkali in the bleaching system for a long time by supplementing continuously H2O2 and NaOH solutions using peristaltic pumps. The H2O2 decomposition was reduced and the brightness was improved. Consequently, the bleaching efficiency was improved. The experimental results indicated that the bleaching efficiency reached 16.5 by CCS, which was significantly higher than that obtained by the traditional high-consistency bleaching method (7.4). This novel bleaching method may be helpful to industrial production practice.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Xianqi Sun
AU  - Haizhen Shi
AU  - Jianfeng Ji
AU  - Lichun Zhou
PY  - 2018/02
DA  - 2018/02
TI  - Continuous Chemical Supplement, a Novel Solution to Improve the Efficiency of Peroxide Bleaching
BT  - Proceedings of the 2017 3rd International Forum on Energy, Environment Science and Materials (IFEESM 2017)
PB  - Atlantis Press
SP  - 794
EP  - 802
SN  - 2352-5401
UR  - https://doi.org/10.2991/ifeesm-17.2018.150
DO  - 10.2991/ifeesm-17.2018.150
ID  - Sun2018/02
ER  -