HYDRODYNAMICS SIMULATION IN CYLINDRICAL MICROCHANNEL FOR GASES MIXING IN ONE STEP UREA SYNTHESIS

Miniaturizing process device is able to emerge a new development in industrial
process. In urea and ammonia industries, it is used at the design stage. The major
issue of microreactor study, meanwhile, is in term of the mixing and reaction in
which, in this case, it is highly relied on the microreactor geometry. Microreactor is
commonly in the form of microchannel. Optimizing microchannel for better fluid
mixing and fluid interaction is one way to achieve an effective production with less
energy consumption. On the other hand, studies for urea production in microreactor so
far are not available. Urea production through one step synthesis has been proposed in
which Hj, N2, and CO2 have been introduced simultaneously in the microreactor. The
interest of this research is to investigate die hydrodynamics behavior of H2, N2, and
C02 gas in cylindrical microchannel. Computational flow simulation was performed
and Computational Fluid Dynamics used in this research method was bymeans ofthe
application ofANSYS-FLUENT software.