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慈竹模拟置换蒸煮工艺研究
Study on the DDS Cooking of Bamboo (Neosinocalamus)
收稿日期：  
DOI：10.11980/j.issn.0254-508X.2012.06.002
关键词:  慈竹  置换蒸煮  NaOH浓度  硫化度
Key Words:bamboo (Neosinocalamus)  DDS  alkali dosage  sulfidity
基金项目:2008年度国家发改委重大产业技术开发专项“竹材制浆深度脱木素蒸煮和清洁漂白技术”；陕西科技大学校级自选科研项目（ZX11-01）。
作者单位
李佩燚1 1.陕西科技大学造纸工程学院，陕西省造纸技术及特种纸品开发重点实验室，陕西西安，710021 
张美云1 1.陕西科技大学造纸工程学院，陕西省造纸技术及特种纸品开发重点实验室，陕西西安，710021 
夏新兴1 1.陕西科技大学造纸工程学院，陕西省造纸技术及特种纸品开发重点实验室，陕西西安，710021 
赵　琳2 2.四川永丰浆纸股份有限公司，四川乐山，614500 
吴　盼1 1.陕西科技大学造纸工程学院，陕西省造纸技术及特种纸品开发重点实验室，陕西西安，710021 
李小龙1 1.陕西科技大学造纸工程学院，陕西省造纸技术及特种纸品开发重点实验室，陕西西安，710021 
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摘要:研究了慈竹模拟置换蒸煮过程中预浸渍段、温充段、热充段NaOH浓度及硫化度对置换蒸煮的影响。结果表明，在慈竹模拟置换蒸煮过程中，在一定范围内NaOH浓度升高时，有利于药液向慈竹内部的渗透，利于蒸煮；温充段对脱木素的贡献大于预浸渍阶段；热充段NaOH浓度对深度脱木素影响最显著。硫化度从23%提高到44%时，利于深度脱木素，浆料卡伯值下降显著，同时得率也随之下降。当预浸渍段、温充段、热充段的NaOH浓度分别为10、15~20、30 g/L，硫化度为23%~30%时，浆料卡伯值为10.7~17.8，得率为43.1%~45.1%。置换蒸煮与普通蒸煮相比，当成浆得率相当时，置换蒸煮成浆卡伯值较低；当卡伯值相当时，置换蒸煮成浆得率较高。
Abstract:The effects of NaOH dosage on the IC, IMC and MFC stage of DDS cooking of bamboo (Neosinocalamus) were studied in this paper. With NaOH dosage increasing, cooking reagent could penetrate to inner of the bamboo quickly in preimpregnating stage, which could be beneficial to cooking. IMC was better to delignification on cooking than IC, and MFC was the most significant influence on the depth of delignification. It was good for the extended delignification when the sulfidity increased from 23% to 44%, and the Kappa number and the yield decreased. Under the pulping condition of 10 g/L in IC stage, 15~20 g/L in IMC stage and 30 g/L in MFC stage of the NaOH dosage, and with the sulfidity of 23%~30%, the Kappa number was 10.7~17.8, and yielding was 43.1%~45.1%. The pulp of DDS cooking of bamboo, which would be lower kappa number and higher yield, has advantage in pulping qualitatively than common cooking pulp.
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