Method for producing alkylphenol

Patent metadata

Field	Value
Publication number	US-2016318833-A1
Application number	US-201615001368-A
Country	US
Kind code	A1
Filing date	Jan 20, 2016
Priority date	Apr 30, 2015
Publication date	Nov 3, 2016
Grant date	—

Abstract

A method for producing alkylphenol is provided. The method includes charging phenol and an olefinic compound into a reaction zone of a reactive distillation tower for a reaction; and separating a product stream containing alkylphenol from the reactive distillation tower, wherein the boiling point of the olefinic compound is lower than that of the phenol, and the phenol is charged into the reactive distillation tower at a charging position located above a position for charging the olefinic compound.

First claim

We claim:

1 . A method for producing alkylphenol, comprising:
charging phenol and an olefinic compound with a boiling point lower than a boiling point of the phenol into a reaction zone of a reactive distillation tower for a reaction; and separating a product stream containing the alkylphenol from the reactive distillation tower, wherein the phenol is charged into the reactive distillation tower at a charging position located above a position for charging the olefinic compound.

2 . The method of claim 1 , wherein the phenol is charged into the reaction zone of the reactive distillation tower, or charged into the reactive distillation tower at a position above the reaction zone of the reactive distillation tower.

3 . The method of claim 1 , wherein the olefinic compound is charged into the reaction zone of the reactive distillation tower, or charged into the reactive distillation tower at a position below the reaction zone of the reactive distillation tower.

4 . The method of claim 1 , wherein the product stream is separated from a bottom of the reactive distillation tower.

5 . The method of claim 1 , wherein the reaction zone is packed with a solid catalyst.

6 . The method of claim 5 , wherein the solid catalyst is an ion-exchange resin.

7 . The method of claim 1 , wherein the olefinic compound is selected from the group consisting of C 2 -C 9 chain olefins and C 3 -C 9 cyclic olefins.

8 . The method of claim 7 , wherein the olefinic compound is nonene.

9 . The method of claim 1 , wherein the molar ratio of the charged phenol to the charged olefinic compound is from 1 to 1.5.

10 . The method of claim 1 , wherein the reaction takes place in a vacuum environment.

11 . The method of claim 10 , wherein an inner pressure of the reactive distillation tower is from 5 ton to 150 torr.

12 . The method of claim 1 , wherein a temperature of the reaction zone of the reactive distillation tower is from 80° C. to 150° C.

13 . The method of claim 1 , wherein a reflux ratio at a top of the reactive distillation tower is from 2 to total reflux.

Assignees

• Chang Chun Petrochemical Co Ltd

Inventors

• Lin Tian-Yuan
• Hung Shih-Bo

Classifications

• B01D3/009 Primary

  in combination with chemical reactions · CPC title

• C07C37/86 Primary

  by treatment giving rise to a chemical modification (chemisorption C07C37/82) · CPC title

• Y02P20/10

  Process efficiency · CPC title

• C07C37/14

  by addition reactions, i.e. reactions involving at least one carbon-to-carbon unsaturated bond · CPC title