METHANOL DEHYDRATION INTO DIMETHYL ETHER (DME) SIMULATION IN FIXED BED REACTOR
Based on National Energy Scheme (RUEN) 2017, number of liquefied petroleum gas (LPG) import will increase due to deficit of LPG supply in Indonesia. DME could be used in LPG mixture as an alternative to fulfill national LPG demand. DME has few advantages such as LPG-like physical properties, also...
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| 格式: | Final Project |
| 語言: | Indonesia |
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| 在線閱讀: | https://digilib.itb.ac.id/gdl/view/55631 |
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| 機構: | Institut Teknologi Bandung |
| 語言: | Indonesia |
| 總結: | Based on National Energy Scheme (RUEN) 2017, number of liquefied petroleum gas
(LPG) import will increase due to deficit of LPG supply in Indonesia. DME could be used
in LPG mixture as an alternative to fulfill national LPG demand. DME has few
advantages such as LPG-like physical properties, also not as harm to environment
because its combustion produces less to zero NOx and SOx. DME could be produced
through methanol dehydration process, which is favorable because it is easier to optimize.
Research about methanol dehydration on fixed-bed reactor need to be done to obtain the
effect of operating condition such as temperature and concentration on conversion and
bed temperature profile along the reaction.
This research uses the help of Matlab and Aspen HYSYS software to calculate
equilibrium conversion using thermodynamics approach and graph methanol conversion
and bed temperature profile in fixed-bed reactor. Equilibrium calculation is done for
methanol dehydration reaction, also side reactions such as methanol decomposition into
syngas, water gas shift reaction, and DME dehydration into ethylene. Methanol
dehydration reaction in fixed-bed reactor simulated in isothermal and adiabatic reactor.
All analysis is done through variations on the feed temperature (300-350°C) and
concentration (0,01-0,04 mol/m 3).
Based on thermodynamics approach, side reactions are more dominant than methanol
dehydration. Usage of ?-alumina catalyst intended to avoid the side reactions, because
this catalyst is selective to DME production. Methanol dehydration on ?-alumina yielded
42,20% methanol conversion at 350°C while only 9,86% converted at 300°C. Increase
on feed concentration from 2 mol/m 3 to 10 mol/m 3 can increase methanol conversion
from 31,80% to 42,20% at 350°C. Based on methanol dehydration simulation on fixedbed
reactor, the reaction will be faster and bed temperature will increase significantly in
higher feed temperature and concentration. |
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