http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Meghedi Deravanesiyan,Masoud Beheshti,Akbar Malekpour 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.21 No.1
The immobilization of alumina nanoparticles onto the NaX zeolite granules, using the sol–gel and aphysical method, for the removal of Cr (III) and Co (II) was investigated. Alumina nanoparticlesimmobilized zeolite (ANIZ) was characterized by SEM/EDX, XRD and AAS. The results suggested theformation of nanoscale alumina ( 30–50 nm) on the zeolite (loading 8–10 wt%) and the stability of thezeolite structure after the immobilization of alumina nanoparticles. ANIZ showed a good capacity for theremoval ofmetal ions. Kinetic and equilibrium data were best fitted with the pseudo second ordermodeland the Langmuir model respectively.
Water and mercaptan adsorption on 13X zeolite in natural gas purification process
Tahereh Kaghazchi,Babak Shirani,Masoud Beheshti 한국화학공학회 2010 Korean Journal of Chemical Engineering Vol.27 No.1
The aim of this work is to model the adsorption process used for mercaptan and water removal from natural gas. Three fixed beds containing Zeolite molecular sieve type 13X, are used in this plant. In this operation, two beds are in process for adsorption purposes and the other one is regenerated simultaneously. This system is also operated under isothermal condition. In modeling of this process, rate of adsorption is approximated by linear driving force (LDF)expression, and the extended Langmuir isotherm is used to describe adsorption equilibrium. The set of partial differential equations of dynamic model is solved by Crank-Nicolson method. The effect of equations of state is also studied and the best equation fitting the industrial data is selected. Also, concentration profile is presented versus bed length at various times. The influences of pressure, inlet concentration and bed height on the breakthrough time are also investigated.