Fundamental data for design of ammonia synthesis reactor

4 Fundamental data for design of ammonia synthesis reactor 

It is carried out at high pressmes in industry, and all gases cannot be treated as ideal gases. Therefore, the reaction heat is a function of temperature, pressure and initial gas composition, and a modification for reaction heat obtained at ideal state is needed. The formation and heat of mixing of the system that pme 3H2 + N2 form 17.6% NH3 + 20.6% N2 + 61.8% H2 have been calculated and the reaction heat obtained from this are given in Table 2.17. 

The equations for the calculation of reaction heat in Table 2.17 obtained by regression with least square method, respectively  

The relationships between specific heats at constant pressure C-p [kJ/(kmol-K)] and temperature T(K), partial pressure of various components pi (MPa) for each component are, respectively  

The relations between viscosities pi and total pressures p (MPa) and temperatures t (°C) for hydrogen, nitrogen, ammonia, argon and methane are as follows. 

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