The "near neutral hemicellulose extraction process" involves the extraction of wood hemicellulose using green liquor prior to conventional kraft pulping. The objective of this work was to develop correlations that could be used in process design and economic studies. Experimental data are presented for the extraction of northeast hardwood chips using green liquor. The effect of green liquor application rate, liquor-to-wood ratio and H-factor on the removal of sugars and organic acids are discussed. Empirical correlations are developed that embody green liquor application rate (GL), liquor-to-wood ratio (LAV) and the H-factor (H). The correlation for acetic acid and lignin is: y = A + B(H (LW + a)×(GL + b))~c while the correlation for component sugars, furfural and wood yield is y=A+B[~H(LW+a)/(GL+b)]~c In the above equations A, B, a, b, and c are empirical constants. Parameters are presented for the response variables (y) after the extraction and hydrolysis processes and includes wood yield, lignin removed, component sugars, acetic acid and furfural.
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机译：“近中性半纤维素提取过程”涉及在常规牛皮纸制浆之前使用绿液提取木材半纤维素。这项工作的目的是开发可用于过程设计和经济研究的相关性。给出了利用绿液提取东北硬木片的实验数据。讨论了绿液施用量，液木比和H因子对糖和有机酸去除的影响。建立了经验相关性，体现了绿液施用率（GL），液木比（LAV）和H因子（H）。乙酸和木质素的相关性为：y = A + B（H（LW + a）×（GL + b））〜c，而糖分，糠醛和木材产量的相关性为y = A + B [〜H （LW + a）/（GL + b）]〜c在上面的方程式A，B，a，b和c是经验常数。在提取和水解过程之后，给出了响应变量（y）的参数，包括木材产量，去除的木质素，糖分，乙酸和糠醛。
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