چكيده به لاتين
Nowadays, Separation is known as an expensive unit in the chemical and petrochemical industries. One of gases that commonly separated from stream, is nitrogen gas. In this study, the role of nitrogen in the chemical and process industries is investigated that found in some cases, this gas is widely used as a separated product and in other cases it’s separated from the main products as an useless product. First of all the introduction of nitrogen separation methods such as membrane, cold box and adsorption is studied and is concentrated on the adsorption method that carbon molecular sieve is most commonly used as adsorbent surface in this separation method. As well as the different types of nitrogen adsorption isotherm models and its accordance with the porous adsorbent is investigated. Then, the modeling of adsorption and the effect of different operating conditions on nitrogen adsorption by zeolite 4A is studied. Is investigated. Increase initial pressure from 1 to 9 bar increase amount of nitrogen adsorbed relative adsorbent (376.030 mgr/gr). Increase temperature process from 298.15K to 353.15K has remarkable difference was observed in the nitrogen adsorption behaviors on the zeolite because increase temperature process from 298.15K to 333.15K, increase amount of nitrogen adsorbed relative adsorbent (107.203 mgr/gr) so decries it in 333K (42.400 mgr/gr). Increase amount of adsorbent from 1 gr to 4 gr in same pressure and temperature decries amount of nitrogen adsorbed relative adsorbent (21.008 mgr/gr).
Keywords: Adsorption, Nitrogen, Molecular Sieve, Isotherm, Kinetics.
