Hydrothermal pretreatment of wheat straw for the production of pulp and paper

被引：0

作者：

Kubikova, J ^{[1
]}

Zemann, A ^{[1
]}

Krkoska, P ^{[1
]}

Bobleter, O ^{[1
]}

机构：

[1] SLOVAK UNIV TECHNOL BRATISLAVA, DEPT CHEM TECHNOL WOOD PULP & PAPER, SK-81237 BRATISLAVA, SLOVAKIA

来源：

TAPPI JOURNAL | 1996年 / 79卷 / 07期

关键词：

Alkali extraction; bibliographies; biomass; circulation; hemicelluloses; lignins; paper properties; percolation; peroxide bleaching; pretreatment; pyrolysis; recycling; wheat straw;

D O I：

暂无

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

A chemical-free pretreatment process for the production of pulp is described. By treating wheat straw biomass with hot compressed liquid water (e.g, 200 degrees C, 22 bar), almost all the hemicellulose and up to 62% of the lignin are extracted from the lignocellulosic matrix. The remaining solid residue, the pulp, consists of cellulose and residual lignin. Several modes of operation (percolation, recirculation, and combined modes) in a 1 O-L pilot plant were used for this investigation. The combined recirculation-percolation process is advantageous because of its low water and energy consumption. Bleaching was carried out by alkaline extraction and by using hydrogen peroxide only. Indications as to how bleaching can be improved are given. With unbleached pulp, paper tensile strengths of over 3 km were reached. Bleaching increased this value by approximately 1 km.

引用

页码：163 / 169

页数：7