SIMULTANEOUS PRODUCTION OF ETHANOL AND SOFTWOOD KRAFT PULP: ADAPTED OPERATING CONDITIONS

摘要：

Two types of softwood chips were submitted to autohydrolysis and acid hydrolysis to study their behaviour during cooking, oxygen delignification and bleaching. Prehydrolysed wood chips were easier to cook, which means that reduced H factor and/or effective alkali can be used during the kraft cooking. As expected, the global yield was lower for the prehydrolysed chips, partly because the residual hemicelluloses are very sensitive to the cooking. The pulps produced from the prehydrolysed chips were more efficiently delignified during oxygen delignification. Furthermore, their bleaching ability was also much better than the control kraft pulp. One way to improve the overall yield would be to stop the cook of the prehydrolysed pulps at a higher kappa number (between 40 and 50) and then apply an extensive oxygen delignification stage.

关键词： Bioreflnery kraft mill sqftwood.hemicellulose extraction bioethanol ooking ability bleaching ability

作者: Christine Chirat Lucie Boiron Frederic Pouyet Dominique Lachenal John Lloud Ian Suckling

作者单位: LGP2-Grenoble INP-PAGORA, 461 rue de la Papeterie - BP 65, 38402 Saint-Martin dHeres Cedex - France LGP2 - Grenoble INP - PAGORA, 461 rue de la Papeterie - BP 65, 38402 Saint-Martin dHeres Cedex - Scion, Te Papa Tipu Innovation Park,Private bag 3020, Rotorua, New Zealand Scion, Te Papa Tipu Innovation Park, Private bag 3020, Rotorua, New Zealand.

会议类型: 国际会议

会议名称: 16th International Symposium on Wood,Fiber and Pulping Chemistry(第十六届木材、纤维及制浆化学国际会议)

会议地点: 天津

会议语种:英文

页码: 778-783

在线出版日期: 2011-06-08（万方平台首次上网日期，不代表论文的发表时间）