Title:
化学プロセス・プラントのオンライン制御
Document Type and Number:
Japanese Patent JP4435307
Kind Code:
B2
Abstract:
A process plant for the manufacture of halobutyl rubber is provided with online monitoring and control of the process parameters to control the properties of the product. It incorporates an in-situ measurement system that does not require the removal of any sample material from the process. It uses a Fourier Transform Near Infrared (FTNIR) spectrometer, fiber-optic cables, a viscometer for measuring solution viscosity and a Resistance Temperature Device (RTD) for temperature measurement. An online real-time analyzer system using a Constrained Principal Spectral Analysis program predicts the property of the polymer product and provides the process control system with analysis of the data using derived relationships between the physical properties of the polymer and these spectral measurements and the measured values of fluid viscosity and temperature. Differences between the predicted and desired property of the product are used to control process parameters. The method can be used for a variety of chemical process plants.
Inventors:
McDonald's, Michael F
Long, Robert El
Thomas, Karl Jay
Long, Robert El
Thomas, Karl Jay
Application Number:
JP53015698A
Publication Date:
March 17, 2010
Filing Date:
December 31, 1997
Export Citation:
Assignee:
ExxonMobil Chemical Patents, Inc.
International Classes:
B01J19/00; C08F2/00; G01N24/08; G01J3/28; G01J3/453; G01N21/27; G01N21/35; G05D11/00; G05D21/02
Domestic Patent References:
| JP4231849A | ||||
| JP8301793A |
Foreign References:
| WO1996005498A1 | ||||
| US5121337 | ||||
| WO1996041822A1 | ||||
| WO1996018881A1 | ||||
| EP0328826B1 |
Attorney, Agent or Firm:
Yuzo Yamazaki
Kiko Okada
Kiko Okada