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Question 3 In the alkylation process: ALC 1 3 , 4 5 deg C C 6 H 6 + C 1 2 H 2

Question 3 In the alkylation process: ALC13,45\deg C C6H6+C12H24 C6H5.C12H25 A stirred Jacketed reactor is employed to carry out the reaction at 45\deg C, a pump is used to circulate cooling water into the jacket. It is required to: i) Draw a qualitative flowsheet for the process. ii) Estimate the volume of the reactor, in m?. Estimate the dimensions of the reactor, if it is a cylindrical tank, with (H/D=1.3). D and H are the diameter and the height of the reactor, respectively. iv) Estimate the capacity of the cooling water pump, in m/hr. Estimate the heat transfer area needed to cool the reactor, in cm?. Data given: 1) Alkylation is carried out batch wise, the time of the batch is 6 hours. 2) The amounts of reactants per day are: C6H6: 4055 kg,(p =880 kg/m?, MW=78), C12H24: 10893kg,(p =760 kg/m?, MW=168), AICI:: 797 kg (p =2440 kg/m?).3) Heat of reaction =-14826 cal/g.mol. 4) Heat is liberated in 3 hours of the batch time. 5) Cooling water inlet temperature is 22\deg C and outlet temperature is 33\deg C.6) Temperature of reactants should be kept always at 45\deg C.7) Heat capacity of water is 1 cal/g.\deg C.8) Overall heat transfer coefficient (U)=67.8 Kcal/h.m..C.
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