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首页> 外文会议>TAPPI(Technical Association of the Pulp and Paper Industry) Engineering, Pulping amp; Environmental Conference; 20061105-08; Atlanta,GA(US) >Two-step straw processing-a new concept of silica problem solution
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Two-step straw processing-a new concept of silica problem solution

机译：两步秸秆处理-二氧化硅问题解决方案的新概念

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摘要

Two-step wheat, and rice straw processing, as a new concept of agricultural by-product utilization, is presented. The first step includes wet removal of ash/silica, the second step conventional non-sulfur high-yield pulping. The strength properties are shown and compared with the properties of conventional hardwood high yield pulp (fluting). The beneficial effect of alkali pretreatment of straw on ash/silica removal was confirmed. Under the same experimental conditions of impregnation step, desilication rate of wheat straw sample (WS I) reached the value of 90.8%, based on acid insoluble ash (AISA) content, desilication rate of rice straw sample (RS I) 32.7% was determined, and 51.0% for RS II, respectively. Lower number for RS I was caused most likely by lower charge of impregnation chemical. Also, positive effect of the impregnation, that causes more extensive combined degree of delignification and desilication, was found. The fact, that the most of the strength properties of impregnated and delignified straw samples exceed the strength properties of commercial pulp, and at the same time, the properties of the laboratory samples (red oak, wheat straw) processed without the impregnation, is another positive finding.
机译：提出了小麦和稻草两步加工作为农业副产品利用的新概念。第一步包括湿法去除灰/二氧化硅，第二步是常规无硫高产制浆。显示了强度特性，并将其与常规硬木高产纸浆（切屑）的特性进行了比较。证实了秸秆碱预处理对灰分/二氧化硅去除的有益作用。在相同的浸渍步骤实验条件下，小麦秸秆样品（WS I）的脱硅率达到90.8％，根据酸不溶灰分（AISA）的含量，测定稻草样品（RS I）的脱硅率为32.7％。 ，对于RS II分别为51.0％。 RS I的数字较低很可能是由于浸渍化学药品费用较低所致。另外，发现浸渍的积极作用，其导致更广泛的去木质素和脱硅的综合程度。事实是，浸渍和脱木质秸秆样品的大多数强度特性都超过了商业纸浆的强度特性，同时，未经浸渍处理的实验室样品（赤栎，麦秸）的特性是另一个事实。积极的发现。

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