Journal of South China University of Technology(Natural Science) >
Kraft Pulping of Hibiscus cannabines and ECF Bleaching of the Pulp
Received date: 2010-03-10
Revised date: 2010-05-10
Online published: 2010-11-25
Supported by
国家自然科学基金-工程科技发展战略研究联合基金资助项目(U0970164); 华南理工大学制浆造纸工程国家重点实验室自主创新项目(2007ZD01)
By using Hibiscus cannabines as the raw material,this paper analyzes the chemical component of the material,investigates the optimal kraft pulping(KP) conditions at different H factor,and discusses the element chlorine-free(ECF) bleaching of the KP pulp and corresponding bleaching process.It is found that Hibiscus cannabines is a good material for paper making,with the chemical composition as follows: 45.0% of nitrate-ethanol cellulose,16.5% of Klason lignin,pentosan and low content of extraction.Moreover,the results indicate that,in the optimal pulping conditions,namely,a H-factor of 1 000,an active alkali dosage of 20% and a sulphidity of 22%,screened pulp with a yield of 44.9%,a Kappa number of 20.4 and a residual alkali content of 11.67 g/L can be obtained,and that ECF bleaching sequence(ODED) can produce pulp with a brightness of 82.3%ISO when OD0,2%-EpD1,1.5% process is employed.
Wang Qiang Chen Ke-fu Xu Jun Li Jun Tang Jie-bin Wu Hui-min Liu Shan-shan . Kraft Pulping of Hibiscus cannabines and ECF Bleaching of the Pulp[J]. Journal of South China University of Technology(Natural Science), 2010 , 38(11) : 86 -90 . DOI: 10.3969/j.issn.1000-565X.2010.11.016
/
| 〈 |
|
〉 |