混合濶葉樹之四種製漿法及碳水化合物改變之研究

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Title:	混合濶葉樹之四種製漿法及碳水化合物改變之研究 The Pulping of Mixed Hardwoods by Four Processes and Their Changes in Carbohydrates during Pulping
Authors:	許慶雲吳國泉
Contributors:	華岡工程學報
Date:	1991-07
Issue Date:	2014-11-10 12:46:28 (UTC+8)
Abstract:	本研究之目的是研究混合濶葉樹用硫酸鹽法，硫酸鹽法加蒽醌法、多硫化物法、多硫化物加蔥醌法等四種製漿方式之蒸煮效果與蒸煮前後碳水化合物組成分（單糖）含量的變化及影響。實驗結果綜合如下： 1.於硫酸鹽法和多硫化物法製漿，添加蒽醌時得漿率增加，當蒽醌類和多硫化物製漿同時存在時，得漿率之增加有加乘之效果。 2.多硫化物加蒽醌法所得未漂紙漿之強度略低於硫酸鹽法及硫酸鹽一蔥醒法，但較易漂白與打漿。 3.由氣相層析法分析經糖醇醋酸酯化之原木單糖組成分爲：葡萄糖：45.7~47.2%、甘露糖：6.3~6.5%、木糖：11.6~11.9%、樹膠糖：6.3~6.5%、半乳糖：微量。 4.得漿率較高之多硫化物加蒽醌漿用氣相層析法分析時，其單糖損失情形，除了甘露糖變化甚小外，其它損失均較小。較低碳水化合物之損失解釋了較高得漿率之提升與較易打漿之現象。 5.按照分析結果與分析時間，李建等建議之（醋酸酐－乙酸丁酯）糖醇醋酸酯法層析結果比美國TAPPI T249 pm-75法總糖提高了1.0%~4.9%，且處理時間約可縮短2小時。 The purposes of this study is to determine the effect of four pulping processes on mixed hardwoods and the change in carbohydrate composition (monosaccharides) during the pulping. Pulping processes used were Kraft (KP), Kraft-anthraquinone (KP+AQ), Polysulfide (PS) and Polysuifide-anthraquinone (PS+AQ) The results of experiment are summarrzed as follows: 1. The addition of 0.05% anthraquinone to kraft cooking liquor and the polysulfide gives an increased yield, and that the combination of polysulfide and anthraquinonic compounds resulted a higher yield gain than those of sum of respective yield increase. 2. The PS+AQ pulps have lower strength properties than those of KP and KP-AQ pulps, but PS+AQ pulps are easier to beat and bleach. 3. The composition of monosaccharides of the extracted mixed hardwoods used are: glucose: 45.7-47.2% mannose: 24-2.5%, xylose: 11.6-11.9%, arabinose: 63-6.4%, galactose: trace. 4. For the PS-AQ pulps, the loss of monosaccharides are less than those of other pulps with the exception that amount of mannose, which has no appreciable change, The lower carbohydrate losses explain the higher yield obtained and the pulps are easier to beat. 5. According to the analytic results and analytic time, the method of using acetic anhydride-butye acetate of preparing alditol acetate for chromatography (Lee, et al, 1988) give 1.0-4.9% higher sugar contents than the TAPPI Method T249 pm-75.11. On the other hand, method of Lee, et al, needs less pretreatment time than TAPPI's.
Relation:	華岡工程學報； 5 期 (1991 / 07 / 01) ， P169 - 189
Appears in Collections:	[College of Engineering] Chinese Culture University Hwa Kang Journal of Engineering

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