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3. Steady-State CSTR Assume you have an adiabatic CSTR operating at steady-state. Within the CSTR, reactant...
2 of 6 04-Chem-A4/Dec 2012 1. A first-order, homogeneous, liquid-phase reaction (A - B) occurs in...
2 of 6 04-Chem-A4/Dec 2012 1. A first-order, homogeneous, liquid-phase reaction (A - B) occurs in a CSTR that operates adiabatically at steady state. The reaction is exothermic. Data are as follows and should be considered as exact quantities CA G, 1.75 molA/L (Inlet concentration of A) 2.5 J/g-K (The heat capacity of the reacting fluid; assumed constant at all conversions.) AH, -27 000 J/molA q-30 L/min (Flow into the CSTR.) (-rA) = 1.8( 1013)e(-84000 RDCA (The rate of reaction...
1. The following data are available from steady-state CSTR experiments conducted to estimate the kinetics of...
1. The following data are available from steady-state CSTR experiments conducted to estimate the kinetics of a homogeneous liquid-phase catalytic reaction A-B. CA (mol/L) 3.5 3.0 20 1.0 0.5 r (min 1.96 4.17 10.0 22.5 43.7 For each experiment, CA0 = 4 mol/L. The mass balance for A is RCA CA-Ca)-FTA Estimate k and K using linear regression and Matlab
Problem: A reaction A+ R takes place in a constant-volume isothermal CSTR. The component mass balances...
Problem: A reaction A+ R takes place in a constant-volume isothermal CSTR. The component mass balances are: 1401 =CH-C, -kC,C, de=C-Cp+kC/CR dt where: Cai feed concentration of A (input); CRI: feed concentration of R (assumed constant); CA, CR: concentrations of A,R, respectively, in the reactor and outlet; t, k:, positive constants. a) Linearize the equations around the design steady-state (0.0...) (and put them in deviation variable form. b) Calculate the transfer function between CR and CA c) Under what conditions...
The elementary gas phase reaction (A <--> 2B) is to be carried out in an adiabatic...
The elementary gas phase reaction (A <--> 2B) is to be carried out in an adiabatic CSTR. The feed which is at a temperature of 27oC, consists of 80% of A and the remainder inerts. The volumetric flow rate entering the reactor at this temperature is 100 l/min. The concentration of A in the feed at 27oC is 0.5 mol/liter. For 80% of the adiabatic equilibrium conversion, calculate the required reactor volume. DATA: CpA=12 J/mol.K; CpB=10 J/mol.K; CpI=15 J/mol.K deltaHrxn=-75000...
3. Iwould suggest setting up the equations for this multiple steady state problem in Excel. The...
3. Iwould suggest setting up the equations for this multiple steady state problem in Excel. The irreversible, elementary reaction is carried out in a CSTR. Plot the heat-generated and heat-removed curves on the same graph. Assume the following reactor, reaction, and thermodynamic parameters To 27 °C Ta = 40 °C FAo 10 mol/s V 500I k 0.001 s 1 at 373 K E 150 kJ/mol AHRO-80 kJ/mol UA 2000 J/K-s CpA CpB 40 J/mol-K (a) How many steady states are...
The elementary, reversible gas phase reaction A B is to be carried out in a CSTR with heat exchange. Pure A is fed to t...
The elementary, reversible gas phase reaction A B is to be carried out in a CSTR with heat exchange. Pure A is fed to the reactor. The heat exchange coil in the reactor is maintained at 400K. The rate coefficient is known at 400K, but heat of reaction is unknown. Data: k1(400K) = 0.001 s.! V-1000L To=350K R-831 J/mol K h 5 mol's UA 1000 J/K Kea (450K-1 A) Calculate the conversion (X) if the steady state CSTR is operated...
please ahow all work What will be the steady-state effluent BOD concentration for a CSTR (complete...
please ahow all work
What will be the steady-state effluent BOD concentration for a CSTR (complete mix reactor with flows in and out, and no recycle) treating a wastewater with an initial BOD of 200 mg/L. The influent flow rate is 100 liters/day, and the reactor volume is 120 liters. Assume first order kinetics with a biodegradation rate constant of 0.5 day! Use the space provided below to show your calculations. mg/L Effluent BOD concentration
2. (50 pts) A first order, liquid-phase reaction A → B, is conducted in a 2000...
2. (50 pts) A first order, liquid-phase reaction A → B, is conducted in a 2000 L CSTR. The feed contains pure A, at a rate of 300 L min-1, with an inlet concentration of 4.0 mol L-1. The following additional data are available: Cp,a = Cp,l = 3.5 Jg-1K-4; Pa = 1.15 g cm3; AHRA = -50 kJ mol-1 (you can assume that these values are constants) ka = A e-EART = 2.4 x 1015e-12,000/T min-1, with T in...
QUESTION 1: 20 marks 20 points It is planned to carry out the following second-order, elementary,...
QUESTION 1: 20 marks 20 points It is planned to carry out the following second-order, elementary, non- catalytic gas-phase reaction in an adiabatic CSTR: A+B_C+3D. Only A and B (no inerts) are fed to the reactor at equimolar flow rates of 150 mol/min each. The rate constant is related to the temperature by Arrhenius law as follows: k = 37.68x10^10 exp(-80000/RT) L/mol.min. The heats of formation of A, B, C and D (at 298 K) in kJ/mol are -235.3, -393.5,...
16-Ciy-A3 May 2017 Closed-Book Problem 1 Provide answers to the following questions as relate Elementary Environmental Engineering d to environmental engineering material balances, reaction kinet...
16-Ciy-A3 May 2017 Closed-Book Problem 1 Provide answers to the following questions as relate Elementary Environmental Engineering d to environmental engineering material balances, reaction kinetics and microbiology and (6) (i) Under ambient environmental conditions the rate of iron (Fe2) oxidato and precipitate out of solution is sccond order with the rate constant these conditions apply, what mean residence time (t in min) is lower the necessary in a completely stirred tank reactor (CSTR) at steady state to Fe2t concentration from...
2 of 6 04-Chem-A4/Dec 2012 1. A first-order, homogeneous, liquid-phase reaction (A - B) occurs in a CSTR that operates adiabatically at steady state. The reaction is exothermic. Data are as follows and should be considered as exact quantities CA G, 1.75 molA/L (Inlet concentration of A) 2.5 J/g-K (The heat capacity of the reacting fluid; assumed constant at all conversions.) AH, -27 000 J/molA q-30 L/min (Flow into the CSTR.) (-rA) = 1.8( 1013)e(-84000 RDCA (The rate of reaction...
1. The following data are available from steady-state CSTR experiments conducted to estimate the kinetics of a homogeneous liquid-phase catalytic reaction A-B. CA (mol/L) 3.5 3.0 20 1.0 0.5 r (min 1.96 4.17 10.0 22.5 43.7 For each experiment, CA0 = 4 mol/L. The mass balance for A is RCA CA-Ca)-FTA Estimate k and K using linear regression and Matlab
Problem: A reaction A+ R takes place in a constant-volume isothermal CSTR. The component mass balances are: 1401 =CH-C, -kC,C, de=C-Cp+kC/CR dt where: Cai feed concentration of A (input); CRI: feed concentration of R (assumed constant); CA, CR: concentrations of A,R, respectively, in the reactor and outlet; t, k:, positive constants. a) Linearize the equations around the design steady-state (0.0...) (and put them in deviation variable form. b) Calculate the transfer function between CR and CA c) Under what conditions...
3. Iwould suggest setting up the equations for this multiple steady state problem in Excel. The irreversible, elementary reaction is carried out in a CSTR. Plot the heat-generated and heat-removed curves on the same graph. Assume the following reactor, reaction, and thermodynamic parameters To 27 °C Ta = 40 °C FAo 10 mol/s V 500I k 0.001 s 1 at 373 K E 150 kJ/mol AHRO-80 kJ/mol UA 2000 J/K-s CpA CpB 40 J/mol-K (a) How many steady states are...
The elementary, reversible gas phase reaction A B is to be carried out in a CSTR with heat exchange. Pure A is fed to the reactor. The heat exchange coil in the reactor is maintained at 400K. The rate coefficient is known at 400K, but heat of reaction is unknown. Data: k1(400K) = 0.001 s.! V-1000L To=350K R-831 J/mol K h 5 mol's UA 1000 J/K Kea (450K-1 A) Calculate the conversion (X) if the steady state CSTR is operated...
please ahow all work
What will be the steady-state effluent BOD concentration for a CSTR (complete mix reactor with flows in and out, and no recycle) treating a wastewater with an initial BOD of 200 mg/L. The influent flow rate is 100 liters/day, and the reactor volume is 120 liters. Assume first order kinetics with a biodegradation rate constant of 0.5 day! Use the space provided below to show your calculations. mg/L Effluent BOD concentration
2. (50 pts) A first order, liquid-phase reaction A → B, is conducted in a 2000 L CSTR. The feed contains pure A, at a rate of 300 L min-1, with an inlet concentration of 4.0 mol L-1. The following additional data are available: Cp,a = Cp,l = 3.5 Jg-1K-4; Pa = 1.15 g cm3; AHRA = -50 kJ mol-1 (you can assume that these values are constants) ka = A e-EART = 2.4 x 1015e-12,000/T min-1, with T in...
QUESTION 1: 20 marks 20 points It is planned to carry out the following second-order, elementary, non- catalytic gas-phase reaction in an adiabatic CSTR: A+B_C+3D. Only A and B (no inerts) are fed to the reactor at equimolar flow rates of 150 mol/min each. The rate constant is related to the temperature by Arrhenius law as follows: k = 37.68x10^10 exp(-80000/RT) L/mol.min. The heats of formation of A, B, C and D (at 298 K) in kJ/mol are -235.3, -393.5,...
16-Ciy-A3 May 2017 Closed-Book Problem 1 Provide answers to the following questions as relate Elementary Environmental Engineering d to environmental engineering material balances, reaction kinetics and microbiology and (6) (i) Under ambient environmental conditions the rate of iron (Fe2) oxidato and precipitate out of solution is sccond order with the rate constant these conditions apply, what mean residence time (t in min) is lower the necessary in a completely stirred tank reactor (CSTR) at steady state to Fe2t concentration from...
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