Q2: Examine the figure below. NaCl and the feed solution react to form CaCl.In the reactor the conversion of CaCO; is 76% complete. Unreacted CaCO; isrecycled. Calculate (a) the kilograms of Na;CO; exiting the separator per 1000kg of feed, and (b) the kilograms of CaCO, recycled per 1000 kg of feed.NaciReactorSeparatorCaCl,FeedCaco, 90%Na,CO, 10%1000 kghrCaCO,

Here we will assume that the conversion is hundred percent as there are no traces of calcium…

Answered: Q2: Examine the figure below. NaCl and…

Introduction to Chemical Engineering Thermodynamics

8th Edition

ISBN:9781259696527

Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Chapter1: Introduction

Section: Chapter Questions

Problem 1.1P

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when acetone is heated in the gas phase, decomposition into ketene and methane takes place according to: (CH3)2CO > CH2-CO + CH4 the reaction is irreversible and first order. The rate constant is 1.047 s-1 vid 725 C. Calculate the turnover of acetone obtained in an isothermal and isobaric tube reactor under the following operating conditions. The reactor is made up of 20 parallel connected tubes, each with a length of 10 meters and an inner diameter of 10 cm. The working pressure is 4 atm and the temperature is 725 C. The acetone supply amounts to 120 mol/s.
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Consider the pair of reactions in which ethylene is oxidized either to ethylene oxide (desired) or to carbon dioxide (undesired) in the furnace: C₂H4+0₂-C₂H4O C₂H₂ +30₂-2 CO₂ + 2H₂O The feed mixture and air are fed at a temperature To. All gaseous effluents are at temperature T emerging from the non-isothermal reactor. a) Calculate the number of degrees of freedom of the process. How would the answer differ if the reactor were adiabatic? b) Outline a manual calculation procedure to determine the compositions of all streams.
Q2. Consider a fuel which is an equimolar mixture (1 mole each) of propane (C3Hs) and methane (CH4). (a) Write the complete stoichiometric combustion reaction for this fuel with air (b) Determine the stoichiometric A/F ratio of this fuel (C) Estimate the maximum flame temperature using average specific heat cp at 1200 K. Assume the boiler using this fuel operates at 1 atm and the reactants enter at 298 K. AH(C3H8) -103,847 kJ/kmol. AHCHA)-74,831 kJ/kmol AH (H20) =-241,847 kJ/kmol, AH'r(co2) - 393,546 kJ/kmol, CP120-43.87 kJ/kmol.K Cpco2 = 56.20 kJ/kmol.K. Cps2 = 33.71 kJ/kmol.K
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13.7 mole Boron Trichloride (BCl3) enter a reactor with 52.4 mole water for the following reaction: BCl3 + 3 H2O → H3BO3 + 3 HCl 18.2 mole HCl are formed. Calculate the fractional conversion of the limiting reactant.Note: fractional conversions go from 0 to 1
Q1
Problem 2: Liquid-liquid extraction A liquid feed stream of 1500 kg/h consisting of 35 wt. % acetonitrile (1) and 65% water (2) is to be extracted using isobutyl methyl ketone (3) as the solvent. If the flow rate of the solvent is 500 kg/h, determine the flow rates and compositions of the exit streams using the phase diagram (mass fractions) below. The overall process takes place at a constant temperature of 303 K. Acetonitrile OA 1 Extract Phase 0.2 0.8 0.4 0.6 F 0.6 E 0.4 F M 0.8 0.2 Raffinate Phase Isobutyl 1 methyl ketone 0.2 0.4 0.6 0.8 1° Water Settler,
A gaseous reaction, A→2B + C takes place isothermally in a constant pressure reactor. Staring with a gaseous mixture containing 50% A and (rest inert), the ratio of final to initial volume is found to be 1.6. The percentage conversion of A is...?
1,3,5 trimethylbenzene may be reacted with hydrogen over a catalyst to form meta- xylene, which is a valuable product at $1.35/kg. However, meta-xylene may also react with hydrogen to form toluene, which is much less valuable at $0.50/kg. Methane is a side product of both reactions, and it gets recycled elsewhere in the plant. 1 kg of catalyst is degraded for each 200 kg of toluene produced, and it must be disposed of in a toxic waste landfill at a cost of $25/kg. It is proposed to alter the conditions of the reactor such that the selectivity of the reaction is increased from 0.8 (the current selectivity) to 0.9 (the proposed selectivity). Calculate the amount of money gained (in dollars) by making this change to the process, for each 100 kg of 1,3,5 trimethylbenzene reacted.
The formation of NO from Na and O is to be carried out in a small batch reactor. As a first approximation, we shall consider that the reaction time is more rapid than the time of cylinder compression, consequently, the reaction takes place isothermally in car eylinder at 2700 K, in a constant volume reactor (cylinder) and under a pressure of 20 atm, the initial concentration of N2 is 0.0696 mol/liter. By a specifying constant volume, we are assuming that reaction take place rapidly with respect to the movement of the piston in the cylinder. Consider that the feed consists of 77% N2, 15% Oz and 8% other gases, which may be considered inert. At this temperature the equilibrium constant (Ke-0.01). The reaction is reversible: Na + 0z + 2NO With a rate equation: Cho -TN, = k ( CN, Co, Ke Calculate: a) The equilibrium conversion of N2. b) The time required to achieve 80% of the equilibrium conversion. The formation reaction rate- constant k at this temperature is 1.11 liter mol.h' Hint: dx…

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