Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Reexamination Certificate
2007-06-05
2007-06-05
Hannaher, Constantine (Department: 2884)
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
Reexamination Certificate
active
10769997
ABSTRACT:
A process for monitoring and/or controlling a nitrating process, having the following steps:measuring inline infrared spectra of nitric acid content in a reaction mixture stream downstream of the nitration reaction, preferably near-infrared spectra,evaluating the measured spectra by means of a computer-assisted, matrix-specific calibration model for the purpose of determining the content of nitric acid,transmitting the results of spectrometric examination to a process control system,inputting the results of spectrometric examination for the purpose of specifying the content of nitric acid in the acid phase into a regulator (224) for control of the metering (207,217) of nitric acid into a nitrating reactor.
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Brand Marcus
Giesen Rainer
Hamacher Heinz-Josef
Hilgers Frank
Jäger Klaus
Bayer MaterialScience AG
Gil Joseph C.
Hannaher Constantine
Sung Christine
Whalen Lyndanne M.
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