EP 0949318 A2 19991013 - Process for determining the nitrogen content of the effluent of the pretreatment reactor in a catalytic hydrocracking plant
Title (en)
Process for determining the nitrogen content of the effluent of the pretreatment reactor in a catalytic hydrocracking plant
Title (de)
Verfahren zur Feststellung des Stickstoffgehaltes dem Ausfluss des Vorbehandlungsreaktor in einer katalytischen Hydrokrackanlage
Title (fr)
Procédé pour déterminer la teneur en nitrogène de l'effluent du réacteur de prétraitement dans une installation d'hydrocraquage catalytique
Publication
Application
Priority
IT MI980734 A 19980407
Abstract (en)
Process for determining the nitrogen content of the effluent of the pretreatment reactor in a catalytic cracking plant with hydrogen, the above reactor consisting of at least one fixed catalytic bed, which comprises the following steps: 1) collecting the process and laboratory historical data relating to a high number of runs effected by the pretreatment reactor; 2) selecting from the data of point (1) a subset of data to be used as input for a first neural network (NN1) ; 3) calculating the NABT (NABT = normalized average catalytic bed temperature) for each series of historical data using the data of point (2) and correlations available in literature; 4) constructing a first neural network (NN1) using the data of point (2) and the NABT of point (3); 5) selecting a first set of training data of the first neural network NN1, comprising the data of point (2) and the corresponding calculated NABT values of point (3), generating a set of NABT predictive data of point (5); 6) selecting a second set of training data comprising the data of point (2) and the set of NABT predictive data of point (5); 7) constructing a second neural network NN2 using the data of point (6), generating a set of nitrogen predictive data in the effluent and the configuration parameters of the network NN2; 8) applying the predictive data of points (5) and (7) to continuous process data, thus estimating the NABT of NN1 and the corresponding nitrogen content of the outgoing effluent without effecting laboratory analyses. <IMAGE>
IPC 1-7
IPC 8 full level
C10G 49/26 (2006.01); C10G 65/12 (2006.01)
CPC (source: EP)
C10G 49/26 (2013.01); C10G 65/12 (2013.01)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0949318 A2 19991013; EP 0949318 A3 20000524; IT 1299034 B1 20000207; IT MI980734 A1 19991007
DOCDB simple family (application)
EP 99201033 A 19990401; IT MI980734 A 19980407