-
公开(公告)号:WO2014179673A1
公开(公告)日:2014-11-06
申请号:PCT/US2014/036550
申请日:2014-05-02
Applicant: CELANESE INTERNATIONAL CORPORATION
Inventor: FALLON, Denis , GARRETT, Thomas , KIZER, Lawton, E. , LI, Bin , LI, Rongfu , MEHTA, Jay , PAN, Tianshu , TU, Xiaoyan , ALLEN, Leslie , ARORA, Dinesh , BANSAL, Prabuddha , COMBS, Michael
CPC classification number: D21C3/20 , D21C9/005 , D21C9/02 , D21C11/0007
Abstract: A process for treating a cellulosic material comprising extracting the cellulosic material with an extractant to selectively extract hemicellulose therefrom and separating the extracted hemicellulose to form a cellulosic product comprising less hemicellulose than the cellulosic material. The extractant comprises a cellulose solvent and a co-solvent. The cellulosic product advantageously retains its cellulosic fiber morphology. The processes involve separating and recovering the hemicellulose and separating and recycling various process streams employed in the process.
Abstract translation: 一种用于处理纤维素材料的方法,包括用萃取剂萃取纤维素材料以从其中选择性提取半纤维素,并分离提取的半纤维素以形成包含比纤维素材料少的半纤维素的纤维素产品。 萃取剂包括纤维素溶剂和共溶剂。 纤维素产品有利地保留其纤维素纤维形态。 该方法包括分离和回收半纤维素,并分离和回收在该方法中使用的各种工艺流。
-
公开(公告)号:WO2014031667A1
公开(公告)日:2014-02-27
申请号:PCT/US2013/055832
申请日:2013-08-20
Applicant: CELANESE INTERNATIONAL CORPORATION
Inventor: LI, Rongfu , MEHTA, Jay , TU, Xiaoyan , BANSAL, Prabuddha , COMBS, Michael , FALLON, Denis , KIZER, Lawton E.
CPC classification number: D21C3/20 , C08B37/0057 , C08H8/00 , C12P19/04 , C12P19/14 , D21C9/005 , D21C9/007
Abstract: A method for treating a cellulosic material comprising extracting the cellulosic material with an extractant to selectively extract hemicellulose therein and separating the extracted hemicellulose to form a cellulosic product comprising less hemicellulose than the cellulosic material. The extractant comprises an amine oxide and a non-solvent. The cellulosic product retains the cellulosic fiber morphology.
Abstract translation: 一种用于处理纤维素材料的方法,包括用提取剂萃取纤维素材料以选择性提取半纤维素,并将提取的半纤维素分离以形成包含比纤维素材料少的半纤维素的纤维素产品。 萃取剂包括氧化胺和非溶剂。 纤维素产品保留纤维素纤维的形态。
-
公开(公告)号:WO2014031672A2
公开(公告)日:2014-02-27
申请号:PCT/US2013/055838
申请日:2013-08-20
Applicant: CELANESE INTERNATIONAL CORPORATION
Inventor: LI, Rongfu , MEHTA, Jay , TU, Xiaoyan , BANSAL, Prabuddha , COMBS, Michael , FALLON, Denis , KIZER, Lawton E.
IPC: D21C3/04
CPC classification number: D21C3/003 , C08B1/00 , C08B37/0057 , C08B37/14 , C08H8/00 , D21C3/04 , D21C3/20 , D21C5/00 , D21C11/0007 , Y02P20/542
Abstract: A method for treating a cellulosic material comprising extracting the cellulosic material with an extractant to selectively extract hemicellulose therein and separating the extracted hemicellulose to form a cellulosic product comprising less hemicellulose than the cellulose-containing material. The extractant comprises an ionic liquid and a non-solvent. The cellulosic product retains the cellulosic fiber morphology.
Abstract translation: 处理纤维素材料的方法包括用提取剂提取纤维素材料以选择性地提取其中的半纤维素并分离提取的半纤维素以形成包含比含纤维素材料少的半纤维素的纤维素产品。 萃取剂包含离子液体和非溶剂。 纤维素产品保留纤维素纤维形态。 p>
-
-