III International Conference

PP-III-82MATHEMATICAL MODELING OF MASS-EXCHANGE, CHEMICAL ANDHYDRODYNAMIC PROCESSES IN HIGH-POROUS HONEYCOMBEDCATALYSTSShaimardanov A.S., Kozlov A.I., Jensa A.V., Kostikov V.A., Koltsova E.M.Mendeleev University of Chemical Technology of Russia,Dep. of Cybernetics of Chemical Technological Processes, Moscow, RussiaE-mail: kolts@muctr.edu.ruOn the basis of equations of Navier-Stokes using the method of final elements, thehydrodynamic stream structure in a cell and in a layer of a highly porous cellular material isconsidered. Hydrodynamic resistance of highly porous cellular materials is determined duringthe transfer of liquid and gaseous environments. Experimental data are compared.Support and development of up-to-date level of industrial catalytic processes requiresradical solutions in the field of producing new-generation catalysts possessing uniquephysicochemical and mechanical properties along with high operation characteristics. As suchpromising modern catalysts the block catalysts based on high-porous honeycombed materials(HPHM) can be considered, which are prepared by the polymer matrix replication and arecharacterized by high permeability, reliable work in the external diffusion zone etc. HPHMwere developed for filtration of gases, liquids, metal melts and are virtually unknown ascatalyst supports. In industrial processes HPHM-based block catalysts had not been used at allsince there are no existing preparation technologies for high-porous honeycombed supportsand deposited high-porous honeycombed catalysts. Thus it appears reasonable to investigateHPHM-employing mass-exchange, chemical and hydrodynamic processes in the newapparatus arrangement. Structure of high-permeable high-porous honeycombed materialsrepresents a 3D-skeleton formed by crosspieces conjoined in the nodes in four and having incross-section the form of a curvilinear triangle. Spatial dislocation of the nodes is not randombut possesses certain regularity. Due to such organization HPHM structure can be consideredas a group of elementary cells in form rather close to regular dodecahedron whose verticescorrespond to the nodes while the edges are formed by strips connecting the nodes. However,the angles between faces in a regular dodecahedron are such that can’t allow full volumefilling with regularly aligned dodecahedra.In terms of the work on thesis the HPHM elementary cell geometry was developed thatprovide the volume filling with the regular packing. Such HPHM cell is characterized by:624