Method for monitoring and ensuring the safety of exothermic...

Details Method for monitoring and ensuring the safety of exothermic... Method for monitoring and ensuring the safety of exothermic...

2003-06-06

2009-08-18

Warden, Jill (Department: 1797)

Chemistry: analytical and immunological testing

Measurement includes change in volume or pressure

C702S098000, C702S028000, C702S031000, C700S090000, C700S266000, C700S268000

Reexamination Certificate

active

07575932

ABSTRACT:
The invention relates to a method for monitoring exothermic reactions in a reactor, in which one or more starting materials react exothermically to give at least one product, and at least one gas is present in the reactor during operation as intended or during a runaway, comprising the following process:A) measurement and storage of an initial temperature and an initial pressure in the reactor,B) calculation of the amount of products and starting materials present in the reactor from an energy balance,C) calculation of a maximum pressure raise that occurs on stepwise reaction of the amount of starting materials present, andD) calculation of a runaway pressure from the maximum pressure raise that occurs, calculated in step C), and the measured initial pressure stored in step A).

REFERENCES:
patent: 6498219 (2002-12-01), Kroener et al.
patent: 297 23 396 (1998-10-01), None
patent: 199 59 834 (2001-08-01), None
patent: WO 00/47632 (2000-02-01), None
A. Yermakova and V.I. Anikeev, Ind. Eng. Chem. Res. 39:1453-1472, 2000.
O. Abel, “Scenario-integrated optimization of semi-batch reactor operation under safety constrains”; Fortschritt-Berichte VDI, Reihe 8, Nr. 867, VDI-Verlag, 2001; is believed to be relevant to the invention and has been found in the specification on page 2.
G. Deerberg; Zur sicherheitstechnischen Beurteilung von Semi-Batch-Prozessen mit Gas/Fluessigkeits-Systemen, Umsichtschriftenreihe Band 1; Frauenhofer IRB Verlag, 1997.

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