AVAILABILITY OF PORTATIVE CAPACITY IN ALK YLATION REACTORS I

This paper presents the theoretical analysis, based on the finite elem ents method (FEM), for the stress-strain states developed in the criti cal, or the so-called ''hot'' areas of the alkylation reactors. The hy pothesis of the linear-elastic behaviour of the material ''in situ'' w as accepted, taking into account the inside uniform manometer pressure . Within the geometrical and mechanical structure symmetry, the numeri cal simulation was done with a package of original calculation program mes, developed by using the axial symmetrical triangular lineary finit e element. Since the technological operation of the reactors takes pla ce in the high temperatures range, the analysis was completed with an approximate evaluation of the thermal stress level. The concentrating effects were quantified using the mechanical stresses elastic concentr ation.