公开(公告)号：US3929911A

公开(公告)日：1975-12-30

申请号：US10695871

申请日：1971-01-18

Applicant: STAMICARBON

Inventor： VAN DIERENDONCK LAURENTIUS L ,  VON DEN HOFF JOHAN P H

IPC: C07C37/56 ,  C07C37/00

CPC classification number: C07C37/56 ,  Y02P20/52 ,  C07C39/04

Abstract: An improved process for continuous production of a phenol by pyrolytic oxidation and decarboxylation of a benzenemonocarboxylic acid in the presence of dissolved copper followed by hydrolysis of the intermediate reaction mixture from the oxidation and decarboxylation step, wherein the intermediate reaction mixture from the oxidation and decarboxylation step is fed together with steam and a sufficient quantity of molecular oxygen to a hydrolysis zone whereby the copper in the reaction mixture is maintained in solution during the hydrolysis step by maintaining the copper in a bivalent oxidation state.

Abstract translation: 一种改进的方法，用于在溶解的铜存在下，通过苯甲酰羧酸的热解氧化和脱羧连续生产苯酚，随后中间体反应混合物从氧化和脱羧步骤水解，其中来自氧化和脱羧步骤的中间反应混合物 与蒸汽和足够量的分子氧一起加入水解区，由此通过将铜保持在二价氧化态，在水解步骤期间将反应混合物中的铜保持在溶液中。

公开(公告)号：US3929909A

公开(公告)日：1975-12-30

申请号：US10695971

申请日：1971-01-18

Applicant: STAMICARBON

Inventor： VAN DIERENDONCK LAURENTIUS L ,  VON DEN HOFF JOHAN P H

IPC: C07C37/56 ,  C07C205/22 ,  C07C37/00

CPC classification number: C07C37/56 ,  C07C201/12 ,  C07C39/04 ,  C07C205/22

Abstract: An improved process for removing tar from reaction mixtures obtained in preparing phenols by oxidation of benzenemonocarboxylic acid compounds in the presence of a promoter such as copper wherein the reaction solution is periodically or continuously treated to remove by-products in the form of tar from the solution, said treatment comprising maintaining a short reaction product residence time in the reaction zone wherein the degree of polymerization of the byproduct tar is maintained at a sufficiently low level so that the by-product tar is soluble in an organic, water insoluble solvent, dissolving the reaction mixture in the organic water insoluble solvent, adding water to the solution to remove metallic salts, particularly copper salts, fractionally distilling the remaining solution to remove the organic water insoluble solvent from the reaction medium, separating the solid tar products from the reaction medium and recirculating the reaction medium and the metallic salts back to the reaction zone.

Abstract translation: 一种改进的方法，用于在助催化剂例如铜的存在下，通过苯氧基羧酸化合物的氧化制备酚类获得的反应混合物中的焦油，其中定期或连续地处理反应溶液以从溶液中除去焦油形式的副产物 所述处理包括在反应区保持反应产物停留时间短，其中副产物焦油的聚合度保持在足够低的水平，使得副产物焦油可溶于有机的水不溶性溶剂中， 将反应混合物溶解在有机水不溶性溶剂中，向溶液中加入水以除去金属盐，特别是铜盐，分馏出剩余溶液，从反应介质中除去有机水不溶性溶剂，将固体焦油产物与反应物分离 介质并将反应介质和金属盐再循环回 反应区。