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首页> 外文期刊>Turkish Journal of Agriculture & Forestry >Autocatalyzed Ethanol-Water Pulping of Wheat (Triticum aestivum L.) Straw
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Autocatalyzed Ethanol-Water Pulping of Wheat (Triticum aestivum L.) Straw

机译：小麦秸秆的自催化乙醇-水制浆

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摘要

This study aimed possibility of organosolv pulp production by adding to the pulping liquor without any inorganic catalyzes from the wheat straw which is known as an important raw-material for pulp production in Turkey. To obtain optimum pulping conditions ethanol ratio to pulping liquor, temperature and cooking time at maximum temperature were changed systematically and 18 pulping trial were made. The results showed that the pulping temperature at 170oC was critical for delignification and fiber liberation. Under the limit of 170oC sufficient delignification and chemical defibration were not observed. However, fast fiber liberation occured by applying 180-190oC pulping temperatures. Increasing of pulping time at high temperature level , caused serious viscosity and strength lacks. As a result, optimum pulp properties obtained at 170oC pulping temperature and at 120 min. cooking time with 50 % aqueous alcohol. Organosolv wheat straw pulps obtained optimum pulping conditions has 48 % screened yield, 43 kappa number, 849 cm3/g, viscosity, and 5.7 km. breaking length, 2.1 kPa.m2/g, brust index, 6.7 mN.m2/g. tear index and 17% ISO brightness at the 50 SRo freeness level.
机译：这项研究的目的是通过向制浆液中添加无麦秸的任何无机催化剂的有机制浆可能性，麦秸被称为土耳其制浆的重要原料。为了获得最佳制浆条件，系统地改变了乙醇与制浆液的比例，最高温度下的温度和烹饪时间，并进行了18次制浆试验。结果表明，制浆温度为170oC对于脱木素和纤维释放至关重要。在170oC的极限下，未观察到足够的脱木素和化学纤维分解。但是，通过施加180-190oC的制浆温度可以快速释放纤维。高温下增加制浆时间，导致严重的粘度和强度不足。结果，在170oC的制浆温度下和120分钟时可获得最佳的纸浆性能。用50％酒精水溶液烹饪时间。获得最佳制浆条件的有机溶剂小麦草浆具有48％的筛选收率，43 kappa值，849 cm3 / g，粘度和5.7 km。断裂长度，2.1 kPa.m2 / g，结壳指数，6.7 mN.m2 / g。在50 SRo游离度下的抗撕裂指数和17％ISO亮度。

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