RELATIVE IMPORTANCE OF WOOD DENSITY AND CARBOHYDRATE CONTENT ON PULPING YIELD AND PRODUCT QUALITY

编号 zgly0000332869

文献类型 期刊论文

文献题名 RELATIVE IMPORTANCE OF WOOD DENSITY AND CARBOHYDRATE CONTENT ON PULPING YIELD AND PRODUCT QUALITY

学科分类 220.5570;林产化学加工学

作者 Colodette  J.L.  Mokfienski  Gomide  J.L.  Oliveiral  R.C. 

作者单位 ForestryEngineeringDepartmentFederalUniversityofVicosaVicosa 

母体文献 天津科技大学学报 

年卷期 2004,19(A01)

页码 71-80

年份 2004 

分类号 TS74 

关键词 纸浆生产  产量  木质  纤维密度  碳水化合物  桉木  漂白牛皮纸浆 

文摘内容 The purpose of this study was to evaluate basicdensity, chemical composition and fiber dimensionsof ten Eucalyptus sp wood samples and verify theimpact of this set of parameters and theiicombination on the Kraft pulping process yield andon bleached pulp quality. Ten eucalypt woods ofdifferent species, with basic densities varying from365 to 544 kg/m3 and total wood carbohydratecontents varying from 70.0 to 74.5% , weretransformed into kraft pulp of kappa number 17-18and bleached to 90% ISO brightness by the sequenceOD (PO)D. Wood basic density showed strongercorrelations with fiber dimensions, pulping yield andpulp quality than did chemical composition. Lighterwoods resulted in higher yields. However, woodspecific consumption was lower for denser woods,even though these demanded more drastic pulpingconditions to achieve a given kappa number. Thepulp quality results suggest that lower density woodsshould be directed towards fabrication of refinedpaper (printing and writing grades) while the denserwoods be directed to the sanitary papers segment(tissue grades)。