The formation of nitroanalyine (an important intermediate in dyes, called ‘fast orange’)
is formed from the reaction of ortho-nitrochlorobenzene (ONCB) and aqueous
ammonia. (See Table 3-1 and Example 9-2.)
The liquid-phase reaction is first-order in both ONCB and ammonia with k = 0.0017
m3/kmol.min at 188 °C with E = 11,273 cal/mol. The initial entering concentrations of
ONCB and ammonia are 1.8 kmol/m3 and 6.6 kmol/m3, respectively.
(a) Write the rate expression for the rate of disappearance of ONCB in terms of concentration.
(b) Set up a stoichiometric table for this reaction for a flow system.
(c) Explain how part (a) would be different for a batch system.
(d) Write –rA solely as a function of conversion. –rA = _______
(e) What is the initial rate of reaction (X = 0) at 188 °C? –rA = _______
at 25 °C? –rA = _______
at 288 °C? –rA = _______
(f) What is the rate of reaction when X = 0.90 at 188 °C? –rA = _______
at 25 °C? –rA = _______
at 288 °C? –rA = _______
(g) What would be the corresponding CSTR reactor volume at 25 °C to achieve 90%
conversion at 25 °C and at 288 °C for a molar feed rate of 2 mol/min:
at 25 °C? V = _______
at 288 °C? V = _______