Through the hydrogenation experiments for removal of olefin impurities in effluent mixture obtained from alkylation reactor for linear alkylbenzene synthesis, the reaction kinetics was studied. The experimental result...Through the hydrogenation experiments for removal of olefin impurities in effluent mixture obtained from alkylation reactor for linear alkylbenzene synthesis, the reaction kinetics was studied. The experimental results showed that the catalytic activity of Pd/Al2 O3 among four kinds of catalysts was the highest, and the olefin conversion reached 100%when the reaction temperature was higher than 140 ℃. The kinetic model was established through parameters estimation.The experimental validation of the kinetic model showed that the kinetic model had higher simulation accuracy. The results of prediction by the kinetic model indicated that with the intensification of reaction conditions, the olefin conversion would increase and the bromine index of the linear alkyl benzene would decrease. Under the conditions covering a WHSV of 2.0 h^(-1),a temperature of 90 ℃, and a hydrogen partial pressure of 1.5 MPa, the olefin conversion was 99.67%, and the bromine index of the linear alkyl benzene could be reduced to less than 20.00 mgBr/(100 g).展开更多
A continuous mixed flow reactor, in which the supported heteropolyacid catalyst HRP-12 was suspended, was adopted in the experiment. Experimental data were used in parameters estimation for kinetics equation of benzen...A continuous mixed flow reactor, in which the supported heteropolyacid catalyst HRP-12 was suspended, was adopted in the experiment. Experimental data were used in parameters estimation for kinetics equation of benzene alkylation with linear olefin. Parameters, including reaction rate constant, activation energy and reaction order in olefin molar concentration, were determined as 13530s-1, 48743Jmol-1 and 1 respectively. The kinetic equation for benzene alkylation with linear olefin was thus established. Statistics test and model prediction have shown that the kinetics equation is highly credible under the condition α=0.05 and well corresponds with reaction principle.展开更多
文摘Through the hydrogenation experiments for removal of olefin impurities in effluent mixture obtained from alkylation reactor for linear alkylbenzene synthesis, the reaction kinetics was studied. The experimental results showed that the catalytic activity of Pd/Al2 O3 among four kinds of catalysts was the highest, and the olefin conversion reached 100%when the reaction temperature was higher than 140 ℃. The kinetic model was established through parameters estimation.The experimental validation of the kinetic model showed that the kinetic model had higher simulation accuracy. The results of prediction by the kinetic model indicated that with the intensification of reaction conditions, the olefin conversion would increase and the bromine index of the linear alkyl benzene would decrease. Under the conditions covering a WHSV of 2.0 h^(-1),a temperature of 90 ℃, and a hydrogen partial pressure of 1.5 MPa, the olefin conversion was 99.67%, and the bromine index of the linear alkyl benzene could be reduced to less than 20.00 mgBr/(100 g).
文摘A continuous mixed flow reactor, in which the supported heteropolyacid catalyst HRP-12 was suspended, was adopted in the experiment. Experimental data were used in parameters estimation for kinetics equation of benzene alkylation with linear olefin. Parameters, including reaction rate constant, activation energy and reaction order in olefin molar concentration, were determined as 13530s-1, 48743Jmol-1 and 1 respectively. The kinetic equation for benzene alkylation with linear olefin was thus established. Statistics test and model prediction have shown that the kinetics equation is highly credible under the condition α=0.05 and well corresponds with reaction principle.
