PROCESS FOR WORKING-UP A NITROUS OXIDE COMPRISING OFF-GAS STREAM

The invention relates on a process for working-up a nitrous oxide comprising off-gas stream from a production process of adipic acid by decomposing the nitrous oxide contained in the off-gas stream into nitrogen and oxygen in a fixed bed reactor (21) of a N2O decomposition unit (9) at a temperature...

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Bibliographic Details
Main Authors GMEINER, Wolfgang, WÖLFERT, Andreas, FRIEDRICH, Holger, WEICKGENANNT, Andreas, WATERS, Gerrit, REBLE, Marcus, LORENZ, Michael
Format Patent
LanguageEnglish
Published 04.07.2024
Subjects
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
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Summary:The invention relates on a process for working-up a nitrous oxide comprising off-gas stream from a production process of adipic acid by decomposing the nitrous oxide contained in the off-gas stream into nitrogen and oxygen in a fixed bed reactor (21) of a N2O decomposition unit (9) at a temperature in the range from 430 to 800° C. to obtain a purified gas, wherein for controlling the N2O decomposition unit (9) a nonlinear model predictive control is used which is based on a reactor model of the fixed bed reactor based on equations of energy transport and species transport for nitrogen, oxygen and N2O.
Bibliography:Application Number: US202218271877