基于渗透剂降低黄竹APMP磨浆能耗及提升成浆性能研究

Study on Saving the Energy Consumption of Bambusa Rigida APMP Refining and Improving the Pulp Performance Based on Penetrating Agents

针对竹材化学机械浆药液渗透困难、磨浆能耗高、成浆性能较差的问题,研究了聚乙二醇脂肪酸酯渗透剂P1(以下简称P1)和脂肪醇聚醚渗透剂P2(以下简称P2)对黄竹碱性过氧化氢机械浆(APMP)磨浆能耗和成浆性能的影响。结果表明,P1和P2均能有效降低黄竹APMP磨浆能耗,提升成浆质量;当成浆加拿大游离度为300~350 mL时,与空白对照样(无渗透剂)相比,P1和P2(渗透剂用量均为0.05%,相对于绝干竹片质量)可使黄竹APMP磨浆能耗分别降低13.5%和9.0%,成浆纤维束含量分别降低52.9%和23.5%,纤维分丝帚化率分别提高17.3%和7.2%,手抄片的抗张指数、撕裂指数和耐破指数分别提高30.5%、16.4%、46.4%和12.7%、21.5%、10.7%。

The bamboo alkaline peroxide mechanical pulp(APMP)production is plagued by difficulty in chemical liquid penetration,high en‐ergy consumption,and poor pulp properties.The effects of the polyethylene glycol fatty acid ester penetrating agent(P1)and the fatty alcohol polyether penetrating agent(P2)on the pulp performance and energy consumption of Bambusa Rigida APMP were systematically studied.The results showed that the applications of both P1 and P2 could reduce energy consumption and improve pulp properties,effectively.The energy consumptions of Bambusa Rigida APMP(Canadian standard freeness(CSF)values of pulps were controlled in the range of 300 to 350 mL)with P1 and P2 addition(dosage of 0.05%,oven dry),were reduced by 13.5%and 9.0%by comparison with the control group,respectively.The fiber bundle contents of pulp were decreased by 52.9%and 23.5%,while the fiber fibrillation ratios of pulp were increased by 17.3%and 7.2%by adding P1 and P2,respectively.Similarly,the tensile index,tear index,and burst index of the handsheets were increased by 30.5%,16.4%,and 46.4%with P1 addition,while those indexes were increased by 12.7%,21.5%and 10.7%with P2 addition.