SIMULASI DUA DIMENSI REAKS: OKSIDASI METANOL MENJADI FORMALDEHIDA PADA REAKTOR UNGGUN TETAP

• Main Author: Misran, Erni
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/3036
• Institution: Institut Teknologi Bandung

Formaldehyde is the most im/wrtam derivative of methanol. This compound has become one cf the world's most important industrial and research chemicals. Its principal use today is in the production q f thermosetting resins by condensation with urea, phenol or melamine. Industrially, the oxidation process based on iron molvhdate catalysts has an effective importance for formaldehyde production. from methanol due to its improved activity, selectivity and resistance to poisoning. In indu.sirial application. oxidation reaction of methanol takes place in a nuultituhe fixed-bed reac or. The gas reaction takes place exothermically nosing iron molybdate catalyst in the fixed-bed. In this research, the reaction ?rill he observed in a system that is steady state, at a nor isothermal and non-adiabatic single tube fixed--bed reactor. The .simulation 1.s done by means of Ai 0-dimensional fixed-bed reactor model derived from mass and energv balance. The model is solved numerically fusing a semidicreliration method in MA7LAIi language. The result of computation shows a good agreement when it is verified with experimental data of l'anthe/. The variables that are used, namelt'.feed temperature (To). wall temperature (Th), methanol composition in the feed (Co). and, feed mass flo%vrate (m) give a significant effect to the distribution of concentration, temperature, pressure, and superficial velocity. 77w higher the To, 7µr. and Co, the higher the hot spot temperature achieved and its position is shifted to the entrance of the reactor. At higher Tw, the shift is not signniftcant. The reverse thing does happen at the higher feed mass flowrate (m). The outlet temperature increases at higher Tw and Co. but decreases at higher To and m. At higher Co the methanol conversion increases. The pressure drop (OP) is more it fluenced by Co and m: whereas the superficial velocity by To and m