公开(公告)号：US20110028675A1

公开(公告)日：2011-02-03

申请号：US12808808

申请日：2008-12-16

Applicant: Godefridus Maria Van Dortmont ,  Marleen Horsels ,  Rudy Francois Maria Josef Parton ,  Johan Thomas Tinge

Inventor： Godefridus Maria Van Dortmont ,  Marleen Horsels ,  Rudy Francois Maria Josef Parton ,  Johan Thomas Tinge

IPC: C08G8/10 ,  C07C45/82 ,  C07C51/44 ,  B01J8/00

CPC classification number: C07C29/50 ,  C07C45/006 ,  C07C45/82 ,  C07C51/00 ,  C07C2601/14 ,  C07C49/403 ,  C07C55/14 ,  C07C35/08

Abstract: The present invention relates to a method for continuously preparing cyclohexanone from phenol making use of a catalyst comprising at least one catalytically active metal selected from platinum and palladium comprising hydrogenating phenol to form a product stream comprising cyclohexanone and unreacted phenol; separating at least part of the product stream, or at least part of the product stream from which one or more components having a lower boiling point than cyclohexanone have been removed, into a first fraction comprising cyclohexanone and a second fraction comprising phenol and cyclohexanol, using distillation; separating the second fraction into a third fraction, rich in cyclohexanol, and a fourth fraction, rich in phenol, using distillation;—subjecting at least part of the fourth fraction to a further distillation step, thereby forming a fifth fraction and a sixth fraction, wherein the fifth fraction is enriched in phenol compared to the sixth fraction, and wherein the sixth fraction comprises side-products having a higher boiling point than phenol, and phenol; and which method is characterized in the additional step of continuously or intermittently separating at least part of the sixth fraction to yet a further distillation step, thereby forming a seventh fraction and an eight fraction, wherein the seventh fraction is enriched in phenol compared to the eight fraction, and wherein the eight fraction comprises side-products having a higher boiling point than phenol.

Abstract translation: 本发明涉及使用包含至少一种选自铂和钯的催化活性金属的催化剂从苯酚连续制备环己酮的方法，所述催化活性金属包括氢化苯酚以形成包含环己酮和未反应苯酚的产物流; 将至少部分产物流或至少部分产物流从其中除去一个或多个沸点低于环己酮的组分的产物流转化成包含环己酮的第一馏分和包含苯酚和环己醇的第二馏分，使用 蒸馏 将第二馏分分离成富含环己醇的第三馏分和富含苯酚的第四馏分，使用蒸馏; - 将至少部分第四级分进料至另外的蒸馏步骤，从而形成第五馏分和第六馏分， 其中所述第五馏分与第六馏分相比富含苯酚，并且其中所述第六馏分包含沸点高于苯酚的副产物和苯酚; 并且该方法的特征在于连续或间歇地将至少部分第六馏分分离成另外的蒸馏步骤，从而形成第七馏分和八馏分的附加步骤，其中第七馏分富含苯酚，与八 馏分，其中八馏分包含沸点高于苯酚的副产物。