Modeling, Designing and Construction of the Hydrazine Decomposition Fixed-Bed Reactor
In this research, firstly, a one-dimensional steady state model for a catalytic fixed bed reactor is presented. All mass transfer, heat transfer and momentum equations are considered in this model, applying appropriate assumptions. The results of modeling predict temperature and concentration changes and also pressure drop along the reactor bed length. By applying the modeling, hydrazine catalytic reactor was designed. The design procedure includes thrust and specific impulse and continues with calculation of the bed diameter. Ammonia dissociation and the mass flux were calculated along the length of the bed. Finally, the reactor was designed and tested. In these tests, the maximum reactor temperature was 650 oC, the ammonia dissociation was 59% and the pressure drop was 1.3 bar, presenting a good coherency with the modeling data.
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