b) The reaction is to be carried out isothermally in three different size mixed flowreactors (MFR) in series. The first reactor has a volume of 200 dm, the secondreactor has a volume of 400 dm, while the reactor has a volume of 600 dm?.Species A and B are fed in separate lines to the first MFR. The volumetric flowrate to the first MFR is 10 dm/min of A and 10 dm /min of B.Given;C2H4 = H2O = 2 mol/dm3k = 0.025 dm/mol-min.(PO2, Co2, C4)i. Determine the steady state concentration of A from each reactor.ii. Determine the steady state conversion of A for each reactor. ii. If all of the reactors are in equal size, determine the steady state conversionof A and compare your answer with question Q1b (i).

b) Given: The reaction of ethylene and water to produce ethanol is carried out in three CSTRs or…

Answered: b) The reaction is to be carried out…

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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Consider a second order reaction where ? → ?. The reaction is performed in a batch reactorwhere the concentration of component A decreases from CA0=2.03 mol/L to CA=1.97 mol/L inone minute. What is the reaction constant of this second order reaction
Q2/ An ester is to be prepared in a continuous reactor system. Batch experiments showed that the reaction is first order and irreversible. 50% conversion occurs at 8 minute and 40°C. We need to process 100 gmol. /hr. of 4 molar feed to 95% conversion. Calculate the reactor volumes for this process in: 1. Plug Flow Reactor at 60°C. 2. Continuous Stirred Tank Reactor at 60°C. The activation energy for this reaction is 40KJ/gmol.
Question: In a continuous flow reactor, a first-order irreversible reaction (A → Products) is taking place. The volumetric flow rate of the feed stream is 200 L/min, and the concentration of A in the feed is 0.5 mol/L. The reaction rate constant is 0.02 min^-1. What will be the volumetric flow rate of the effluent stream if 80% of A is converted to products in the reactor? a) 50 L/min b) 100 L/min c) 150 L/min d) 200 L/min
Question 1) The gas phase reaction (A→ B+C) must be carried out in a fixed-bed tubular reactor using a solid catalyst in a spherical shape of 0.4 cm in diameter. The reactor must operate isothermally at 573 K and an inlet pressure of 1 atm. The reaction is first order and the reactor is fed with pure A at a molar flow of FA0-1 g-mol/s. The internal diameter of the reactor must be 2.54 cm.It is known: -The reaction on the surface of the catalyst is of the type r₁=kCA.; -The particle density gp=2 g/cm3; -The porosity of the bed gl= 0.40.-This reaction, when carried out using the catalyst in powder form, obtained a speed of R 1 10-3 g-mol/g-cat.s, at a temperature of 573 K and pure reagent A at a pressure of 1 atm .-Consider that the reactor is being operated under conditions free from resistance to external mass transfer to the particle.-The effective molecular diffusivity in the gas phase (DAB) to solve this exercise must also be considered constant with the temperature and composition…
21.5 The reversible catalytic reaction AZR, X=05 proceeds with decaying catalyst in a batch reactor (batch-solids, batch- fluid). What can you say of the kinetics of reaction and deactivation from the following data: t, hr CA, mol/liter 0 0.25 0.5 1 2 1.000 0.901 0.830 0.766 0.711 0.684
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A liquid reactant stream (1 mol/liter) passes through two mixed flow reactors in a series. The concentration of A in the exit of the first reactor is 0.5 mol/liter. Find the concentration in the exit stream of the second reactor. The reaction is second-order with respect to A and V2/V1 = 2. reactor design
We wish to produce B in the reaction A B in a continuous reactor at a volumetric flow rate of 4 L/min with CAo=2 mol/L. However, we find that there is a second reaction A C, which can also occur. We find that both reactions are first order and irreversible with ki = 0.8 min and k2 = 0.05 min. To determine which reactor is better suited for this reaction, please calculate r, V, Cs and the overall selectivity and overall yield for 90 % conversion of A, for: a) PFR, b) CSTR Which reactor type would you choose to conduct this reaction?
The liquid phase reaction A + B → C follows an elementary law of velocity and occurs isothermally in a flow-through system. The rules for the feed streams of A and B are 2.0 mol/L before mixing. The volumetric flow rate of each stream is 5 dm3/min, and the inlet temperature is 300 K. The streams are mixed just before entering. Two reactors are available. One is a 200 dm3 CSTR, which can be heated to 77oC or cooled to 0oC; another is an 800 dm3 PFR, operated at 300 K, which cannot be heated or cooled. Note that k = 0.07 dm3 / mol.min at 300K and E = 20 kcal / mol. (A) What conversion would be achieved if the CSTR and PFR were operated at 300K and connected in series? And in parallel with 5 mols/min each? (B)Knowing that the operating times (loading, unloading, heating, cleaning, etc.) of the batch reactor is around 3 h, what volume of batch reactor would be necessary to process, per day, the same amount of species A as in reactors with Flow so as to achieve 90% conversion?
The disinfection of water is carried out in a stirred tank. The treatment process has water as the input at a rate of 38 000 L/h. The tank carries 3800 L of water at all times. Sufficient chlorine is fed to the water. The rate of disinfection can be described as a first-order reaction with a rate constant of 0.055/min. The efficiency of the system can be expected to be (A) 0.050 (В) 0.25 (C) 0.50 (D) 0.75
Problem 4 The reversible, exothermic, liquid phase, homogeneous reaction A ₹R is being carried out in two ideal CSTRs. Both reactors operate at 150°C. The molar flow rate of A entering the first CSTR is 55,000 mol/h, the concentration of A in this stream is 6.5 mol/L, and the concentration of R is zero. The fractional conversion of A in the outlet stream from the second CSTR is 0.75. The fractional conversion is based on the molar flow rate entering the first CSTR. The reaction is first order in both directions. The rate constant for the forward reaction is 1.3 h-¹ and the equilibrium constant based on concentration at 150°C is 10.0. If the volume of the second CSTR is 10,000 L, what is the required volume of the first CSTR?
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