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Fiber Resources for the Pulp Paper Industry in the 21st Century

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Fiber Resources for the Pulp Paper Industry in the 21st Cent...

第四届国际非木材纤维制浆造纸会议

作者： xie laisu Long Yanquan Tianjin University of Light Industry (1038 Dagu Nanlu Hexi Tianjin 300222 China

＜正＞In the later 50 years of 20st century, the production of the paper and board from 43 million tons in 1950 raised to 301 million tons in 1998. The average increasing rate was 4.24% per one year in 48 years. The production in one year was average increased 3.14 million tons in first 10 years but 7.8 million tons in last 10 years. However, the increasing rate of one year in first 10 years was 6.27% and in last 10 years was reduced to 3.36%. The ratio of the pulp versus paper and board from 89.74% reduced to 56.31%. This trend will be continued in the 21st century if no special change. The production of the paper and board will be increased to 410 million tons in 2010, 620 million tons in 2030, and 1680 million tons in 2100. In last 10 years of 21 century, the average production per one year will be increased 19 million tons but the increasing rate of one year will be reduced to 1.33%. The virginal pulp would be produced 490 million tons in 2100. In last 10 years of 21st century, the average production per one year will be increased 4 million tons and the increasing rate of one year will be reduced to 0.95%. The production ratio of the virginal pulp versus paper and board will be reduced to 28.99%. The difference between the production in virginal pulp and paper and board will be mainly balanced by secondary fiber. The 90% of virginal pulp produced from wood will be still not changed considerably, but the wood species and their supply area would be obviously changed. However, the nonwood plant will be taken more attentions. The reason besides that, the large part of nonwood plant is the residues of the agriculture and more easily to renew, the following facts also inspire confidence in papermakers: 1. Mixing the nonwood fiber in the wood and/or secondary fiber, the quality of the end product will be improved. 2. Some difficult problems with the nonwood fiber will be solved because many new technologies of the advance papermaking were developed. For example: reducing

关键词： 21st century Fiber Resources Secondary fiber Wood Nonwood

STUDIES ON THE TREATMENT OF BLACK LIQUOR FROM WHEAT STRAW SODA-AQ PULPING PROCESS BY PHOTOSYNTHETIC BACTERIUM

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STUDIES ON THE TREATMENT OF BLACK LIQUOR FROM WHEAT STRAW SO...

第四届国际非木材纤维制浆造纸会议

作者： xie laisu (Tianjin University of Light Industry 1038 Dagu Nanlu Hexi Tianjin China 300222) Wu Shubin (South China University of Technology)

＜正＞Photosynthetic Bacterium （PSB） was the name of a group Bacterium, which the Bacterium performance photosynthetic and not release the Oxygen in anaerobic condition. It includes the rhodospirillum Bacterium and the other species. They widely distributed in the rice field, marsh, lakes and rivers. The body of this Bacterium contains rich protein, vitamin as so on, which can promote the growing of the animals and water living things. Photosynthetic Bacterium has the potential to clean the wastewater. Since 1967, the researchers have been confirming that the COD and BOD of the wastewater can be reduced by Photosynthetic Bacterium. Using Photosynthetic Bacterium to treat the high concentrate organic wastewater was taken more interest in the peoples. The characteristics and biodegradability of the black liquor from wheat straw Soda-AQ pulping process was analyzed firstly in this study. The content of the wheat straw black liquor is high in the lignin, its CODcr reached 89838mg/L and BOD5 reached 20850mg/L, so that it must be pretreated to suit for bacterial treatment. The treatment of wheat straw black liquor by Photosynthetic Bacterium （PSB） was researched, at the same time, a process of the acid pretreatment and PSB treatment was advanced for treating the black liquor. The factors which affect the PSB treatment are treating temperature, time, illumination strength, effluent concentration and inoculation dose. The better condition for PSB treatment are 30℃ aerobic, darken lightly aerobic or illuminating anaerobic treatment by mixed culture. The process proposed in this paper can be used for treating wheat straw black liquor. The advantages are performed well under high loads and good stability. The removal rates of CODcr and BOD, were found to be 70%, 14% respectively after acid pretreatment and 65%, 82% after PSB treatment.

关键词： Photosynthetic Bacterium Wheat straw Black liquor

Influence of fillers on optical and strength properties of handsheet made from Kenaf CMP

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Influence of fillers on optical and strength properties of h...

第三届国际非木材纤维制浆造纸会议

作者： xie laisu Li Ming Wu Siming Jia yuanyuan Tan Guomin Long Yanquan Tianjin university of Light Industry 1038 Dagu Nanlu Hexi Tianjin CHINA 300222

＜正＞In this paper, the effect of talc, precipitated calcium carbonate, synthetic organic filler （urea-formaldehyde resin） and synthetic inorganic filler （white carbon black） are used as fillers for kenaf CMP handsheets, and their effects are studied. The result shows that when the amount of the filler added does not exceed 15%, the opacity of the handsheet increases with increasing filler addition. Synthetic organic filler and precipitated calcium carbonate are more effective for improving the opacity of the handsheet, and the strength properties of the calcium carbonate filled handsheet suffer more adverse effects.

关键词： Kenaf CMP Fillers Opacity Strength

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硫酸铝和聚合氯化铝性能的比较

造纸科学与技术 2001年第4期20卷 19-23页

作者：胡芳陈蕴智谢来苏齐齐哈尔大学齐齐哈尔161006 天津轻工业学院天津300222

添加硫酸铝和聚合氯化铝的纸浆的电荷特征 ,是决定铝化物发挥功效的重要因素。本文利用胶体滴定技术 ,从电荷分析的角度 ,比较了硫酸铝和聚合氯化铝的性能。研究了它们对纸浆pH值和电导率的影响 ;用量对纸浆电荷的影响 ;研究了 pH值对... 详细信息

添加硫酸铝和聚合氯化铝的纸浆的电荷特征 ,是决定铝化物发挥功效的重要因素。本文利用胶体滴定技术 ,从电荷分析的角度 ,比较了硫酸铝和聚合氯化铝的性能。研究了它们对纸浆pH值和电导率的影响 ;用量对纸浆电荷的影响 ;研究了 pH值对添加相同量硫酸铝和聚合氯化铝的纸浆的电荷的影响 ;最后比较了两者的助留、助滤和施胶效果。结果表明。

关键词：硫酸铝聚合氯化铝电荷胶体滴定造纸纸浆施胶

CORRELATION BETWEEN THE HANDSHEET STRENGTH AND THE SPECIFIC SURFACE AND SPECIFIC VOLUME OF THE PULP BEATING AT VARIOUS CONSISTENCIES

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CORRELATION BETWEEN THE HANDSHEET STRENGTH AND THE SPECIFIC ...

第二届国际非木材纤维制浆造纸会议

作者： xie laisu Su Qiufeng Li Jianyong Zhong Yong and Long Yanquan Chemical Engineering Department Tianjin Institute of Light Industry 1038 Dagu Nanlu Hexi Tianjin 300222 CHINA

＜正＞As we known, the specific surface and specific volume of the pulp have considerable influence on the strength of the handsheet. Beating in different equipments and various consistencies,the changes of the specific surface and specific volume will be different, that is our research published in Tappi J. 74（2）:223 (*** this paper is the continue of the front, it mainly discusses the correlation of the handsheet strengths and the specific surface and specific volume of the Mg-bisulfite reed pulp beating at various consistencies in PFI mill. The results shown that, the pulp beating at various consistencies,the changes of the specific surface and specific volume have different influence on the changes of the handsheet strength. Beating at low consistencies （6%,10%）,the strengthes （breaking length, burst, fold endurance）basing mainly on the bond increase with increasing specific surface and specific volume of the pulp. Beating at medium or high consistencies（15%,20%,25%,30%）,the influence of the specific surface and specific volume on the strength of the handsheet is very complex and must be considered comprehensively. In addition, the changes of the other properties of the fiber with changing specific surface and specific volume also influence on the handsheet strength, which must be further considered.

关键词： beating consistencies specific surface specific volume handsheet strength

Influences of Bleaching on the Brightness and Colority of Enzyme-deinked Pulps

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Influences of Bleaching on the Brightness and Colority of En...

第三届国际非木材纤维制浆造纸会议

作者： Wang Gaosheng Hao Junfang xie laisu Long Yanquan Pulp & Paper Science and Technology Laboratory Tianjin University of Light Industry 1038 Dagu Nanlu Tianjin 300222 P.R. China

＜正＞Enzyme-deinked ONP pulp was found to be different from conventional chemical-deinked pulp. This paper investigated the effects of certain bleaching agents on the brightness and color spectra of enzyme-deinked pulp and compared the results with that of chemical-deinked pulp. The agents used were sodium hydrosulfite （Na2S2O4） and hydrogen peroxide （H2O2）. There was little difference in the bleachability between the two kinds of deinked pulp with Na2S2O4 bleaching. But with H2O2, enzyme-deinked pulp was found to be more readily bleached than the other pulp. CIE1976L*a*b* system was used to describe colority numerically. For chemical-deinked recycled fiber, bleached either with Na2S2O4 or H2O2, the colority exhibited more lightness and less yellowness. Similar results were observed for enzyme-deinked fibers bleached with H2O2. However, for enzyme-deinked fibers bleached with Na2S2O4, more lightness was observed, but the yellowness was only slightly affected.

关键词： bleaching sodium hydrosulfite hydrogen peroxide brightness colority ONP enzyme-deinked pulp

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测量纤维卡伯值的一种新方法

国际造纸 2001年第2期20卷 30-31页

作者：石岩谢来苏天津轻工业学院天津300222

介绍一种利用吖啶橙染色产生的荧光特性来测量纤维卡伯值的新方法。并对其测定原理、测定方法和测量中要考虑的影响因素作了具体的阐述。

关键词：纤维卡伯值吖啶橙漂白荧光性纸浆测量方法原理

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两性淀粉在中性抄纸中的应用

中国造纸学报 1999年第B10期14卷 78-81页

作者：陈夫山刘丹凤谢来苏隆言泉山东轻工业学院济南250100 天津轻工业学院天津300222

研究了一系列不同阳离子取代度和阴离子取代度的两性淀粉在中性条件下对漂白麦草浆的助留作用,两性淀粉阴离子取代度在0024～0026时,随着两性淀粉阳离子取代度的增加,填料留着率增加,分别加入1%的LSL21(阳离子取代度0034)、LSL22(0040)... 详细信息

研究了一系列不同阳离子取代度和阴离子取代度的两性淀粉在中性条件下对漂白麦草浆的助留作用,两性淀粉阴离子取代度在0024～0026时,随着两性淀粉阳离子取代度的增加,填料留着率增加,分别加入1%的LSL21(阳离子取代度0034)、LSL22(0040)和LSL23(0047)两性淀粉,填料留着率分别从空白38%提高到505%、683%和731%。两性淀粉LSL23在pH值75条件下,加入20%硫酸铝,用量在15%时,填料留着率从空白样的38%提高到80%,强度只下降32%。

关键词：两性淀粉填料留着率中性抄纸漂白麦草浆助留取代度用量阳离子硫酸铝 LS

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新型造纸助剂聚合硅酸硫酸铝的结构特征研究

中国造纸学报 1999年第B10期14卷 73-77页

作者：刘温霞隆言泉王启常谢来苏天津轻工业学院天津300222

制备了不同碱化度和硅铝比的聚合硅酸硫酸铝,样品经固化后利用红外光谱和X射线衍射谱研究了聚合硅酸硫酸铝的结构特征,发现聚合硅酸硫酸铝具有与聚合硫酸铝类似的结构特征。聚合硅酸硫酸铝是硅以与铝类似的结构形态取代聚合硫酸铝中的... 详细信息

制备了不同碱化度和硅铝比的聚合硅酸硫酸铝,样品经固化后利用红外光谱和X射线衍射谱研究了聚合硅酸硫酸铝的结构特征,发现聚合硅酸硫酸铝具有与聚合硫酸铝类似的结构特征。聚合硅酸硫酸铝是硅以与铝类似的结构形态取代聚合硫酸铝中的部分铝而形成的。在稳定的聚合硅酸硫酸铝中硅铝比与碱化度之间存在着成正比例的定量关系。聚合硅酸硫酸铝的常温结晶产物与聚合硫酸铝不同。

关键词：聚合硫酸铝硅酸硫酸铝新型硅铝比碱化度取代定量关系样品固化