System and process for cumene hydroperoxide cleavage with improved online instrumentation configuration

Patent metadata

Field	Value
Publication number	US-10065171-B2
Application number	US-201515520559-A
Country	US
Kind code	B2
Filing date	Oct 22, 2015
Priority date	Oct 24, 2014
Publication date	Sep 4, 2018
Grant date	Sep 4, 2018

Abstract

Disclosed herein are a method and systems for cumene hydroperoxide cleavage with an improved configuration for online instrumentation. The systems comprise a first fluid loop comprising one or more reactors and a fluid pump and a second fluid loop in fluid communication with the first fluid loop. This second fluid loop comprises an instrument configured to measure a characteristic of a fluid flowing through the second loop, wherein an input of the second fluid loop is disposed downstream of said fluid pump and an output of the second fluid loop is disposed upstream of said fluid pump. The method comprises causing fluid to flow within a first stage comprising one or more reactors and a fluid pump, wherein the first stage is configured to decompose a cumene hydroperoxide in the presence of a catalyst mixture to form a dicumyl peroxide mixture. The method also comprises causing at least a portion of the fluid to flow through a instrumentation line in open fluid communication with the first stage. This instrumentation line comprises an instrument configured to measure a characteristic of the fluid flowing through the instrumentation line and an input of the instrument line is disposed downstream of said fluid pump.

First claim

What is claimed is:

1. A system comprising:
a first fluid loop comprising one or more reactors and a fluid pump configured in fluid communication with each other, wherein the fluid pump is configured to cause an output of the one or more reactors to flow as an input to the one or more reactors; and
a second fluid loop in fluid communication with the first fluid loop, the second fluid loop comprising an instrument configured to measure a characteristic of a fluid flowing through the second loop, wherein an input of the second fluid loop is disposed downstream of the fluid pump and an output of the second fluid loop is disposed upstream of the fluid pump;
further comprising a second stage including one or more second reactors in fluid communication with the output of the one or more reactors of the first fluid loop.

2. The system of claim 1 , wherein the one or more reactors of the first fluid loop comprise tubing, a pre-heater, a heat exchanger, a calorimeter, or any combination thereof.

3. The system of claim 1 , wherein the first fluid loop is configured to react cumene hydroperoxide with dimethyl benzyl alcohol to form dicumyl peroxide.

4. The system of claim 1 , further comprising a storage vessel in fluid communication with the output of the one or more reactors to receive a fluid there from.

5. The system of claim 1 , wherein the second stage is configured to form a phenol, acetone, and alpha-methylstyrene mixture from decomposition of a dicumyl peroxide mixture.

6. The system of claim 5 , wherein the dicumyl peroxide mixture is received from the first fluid loop.

7. The system of claim 1 , wherein the instrument is configured to measure one or more of a water percentage, conductivity, spectral characteristics, and flow rate.

8. The system of claim 1 , wherein the instrument comprises a near infrared spectroscopy device.

9. The system of claim 1 , wherein the second fluid loop is in open fluid communication with the first fluid loop.

10. A system comprising:
a first stage comprising one or more reactors and a fluid pump configured in fluid communication with each other, wherein the fluid pump is configured to cause an output of the one or more reactors to flow as an input to the one or more reactors, and wherein the first stage is configured to decompose a cumene hydroperoxide in the presence of a catalyst mixture to form a dicumyl peroxide mixture; and
an instrumentation line in open fluid communication with the first stage, the instrumentation line comprising an instrument configured to measure a characteristic of a fluid flowing through the instrumentation line, wherein an input of the instrumentation line is disposed downstream of the fluid pump;
further comprising a second stage including one or more second reactors in fluid communication with the output of the one or more reactors of the first stage.

11. The system of claim 10 , wherein the one or more reactors of the first stage comprise tubing, a pre-heater, a heat exchanger, a calorimeter, or any combination thereof.

12. The system of claim 11 , wherein the second stage is configured to form a phenol, acetone, and alpha-methylstyrene mixture from decomposition of the dicumyl peroxide mixture received from the first stage.

13. The system of claim 1 , wherein the instrument is configured to measure one or more of a water percentage, conductivity, spectral characteristics, and flow rate.

14. The system of claim 1 , wherein the instrument comprises a near infrared spectroscopy device.

15. A method comprising:
causing fluid to flow within a first stage comprising one or more reactors and a fluid pump configured in fluid communication with each other, wherein the first stage is configured to decompose a cumene hydroperoxide in the presence of a catalyst mixture to form a dicumyl peroxide mixture; and
causing at least a portion of the fluid to flow through a instrumentation line in open fluid communication with the first stage, the instrumentation line comprising an instrument configured to measure a characteristic of the at least a portion of the fluid flowing through the instrumentation line, wherein an input of the instrumentation line is disposed downstream of the fluid pump;
wherein the instrument is configured to measure one or more of a water percentage, conductivity, spectral characteristics, and flow rate.

16. The method of claim 15 , wherein the one or more reactors comprise tubing, a pre-heater, a heat exchanger, a calorimeter, or any combination thereof.

17. The method of claim 1 , wherein the instrument comprises a near infrared spectroscopy device.

Assignees

• Sabic Global Technologies Bv

Inventors

• Nelson Mark Erik
• Williams James Patrick

Classifications

• B01J19/242 Primary

  in series · CPC title

• C07C37/08

  by decomposition of hydroperoxides, e.g. cumene hydroperoxide · CPC title

• C07C407/00

  Preparation of peroxy compounds · CPC title

• B01J2219/00164

  controlling the flow · CPC title

• B01J2208/00283

  involving reactant liquids · CPC title