Dehydrogenation of ethylbenzene to styrene is normally accomplished in a fixed-bed reactor. A catalyst is packed...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
Dehydrogenation of ethylbenzene to styrene is normally accomplished in a fixed-bed reactor. A catalyst is packed in tubes to form the fixed bed. Steam is often fed with the styrene to moderate the temperature excursions that are characteristic of adiabatic operation. The steam also serves to prolong the life of the catalyst. Consider the situation in which we model the behavior of this reactor as an isothermal plug flow reactor in which the dehydrogenation reaction occurs homogeneously across each cross- section of the reactor. The stoichiometry of the reaction is: C2H5C6H5 → H2 + CH2=CHC6H5 Consider the case for which the reaction obeys a rate law that is first-order in ethylbenzene with k= 3.5×10-³s¹ at the temperature of interest (200 °C), and the feed is 75% v/v H₂O, 15% v/v C₂H5C6H5, and 10% v/v H₂. If the feed stream enters at 1 atm and behaves as an ideal gas, what space time is necessary for the reactor to achieve 90% conversion? (Problem 8.6 in Hill) Dehydrogenation of ethylbenzene to styrene is normally accomplished in a fixed-bed reactor. A catalyst is packed in tubes to form the fixed bed. Steam is often fed with the styrene to moderate the temperature excursions that are characteristic of adiabatic operation. The steam also serves to prolong the life of the catalyst. Consider the situation in which we model the behavior of this reactor as an isothermal plug flow reactor in which the dehydrogenation reaction occurs homogeneously across each cross- section of the reactor. The stoichiometry of the reaction is: C2H5C6H5 → H2 + CH2=CHC6H5 Consider the case for which the reaction obeys a rate law that is first-order in ethylbenzene with k= 3.5×10-³s¹ at the temperature of interest (200 °C), and the feed is 75% v/v H₂O, 15% v/v C₂H5C6H5, and 10% v/v H₂. If the feed stream enters at 1 atm and behaves as an ideal gas, what space time is necessary for the reactor to achieve 90% conversion? (Problem 8.6 in Hill)
Expert Answer:
Related Book For
Elementary Principles of Chemical Processes
ISBN: 978-1119498759
4th edition
Authors: Richard M. Felder,? Ronald W. Rousseau,? Lisa G. Bullard
Posted Date:
Students also viewed these chemical engineering questions
-
Rate of drying of granular solids in a fixed bed calculate the initial rate of water removal in the drying operation described in Problem 22A.3, if the solids are cylinders with a = 180 ft-1.
-
Steam enters an adiabatic turbine at 8 MPa and 500°C with a mass flow rate of 3 kg/s and leaves at 30 kPa. The isentropic efficiency of the turbine is 0.90. Neglecting the kinetic energy change...
-
Steam enters an adiabatic turbine at 6 MPa, 600°C, and 80 m/s and leaves at 50 kPa, 100°C, and 140 m/s. If the power output of the turbine is 5 MW, determine (a) The reversible power output...
-
Conduct online research for federal income tax brackets for the current year. Which tax bracket do you fit into for your gross household income? How close is your gross household income to the next...
-
For each of the following elementary matrices, describe the corresponding elementary row operation and write the inverse. a. b. c. d. e. f. 103 E=1010 00 1 00 1 E=1010 1 00 0 12 0 100 100 E-1-210 001...
-
Use Python https://www.python.org/downloads/ 1 My electricity bills for the last three months have been $23, $32 and $64. What is the average monthly electricity bill over the three month period?...
-
How does make determine whether a target needs to be rebuilt?
-
Consider the following activity information and the constraint that the project must be completed in 16 weeks. In addition, activities c, f, h, and i may be crashed as follows. Assume partial...
-
Question 3.1 Create a class containing a method name createArray and a main method. The method createArray creates an array where each element contains the square of its index. The size of the array...
-
Rachel Cook is very concerned. Until recently, she has always had the golden touch, having successfully launched two start- up companies that made her a very wealthy woman. However, the timing could...
-
Q4. A man walks at 5 km/h in the direction of a 20 km/h wind. If raindrops fall vertically at 7 km/h in still air, determine direction in which the drops appear to fall with respect to the man. = 20...
-
5. How should non-current financial liabilities be recorded initially? A. At face value. B. At fair value. C. At fair value less transaction costs. D. At face value less transaction costs.
-
The manager of an inpatient medicals surgical unit is participating in fiscal planning for the upcoming year. During this process, the manager should: Group of answer choices delegate and allow...
-
Describe a criterion of what makes someone an ethical person. Compare and apply this criterion to what makes someone an ethical salesperson. Explain and justify why ethics are important to overall...
-
Sensitivity analysis Scenario Manager A break-even analysis is a financial calculation weighing cost against sell price to evaluate break-even point in Excel will vary assumptions in a model, finding...
-
Which option is preferable? (Select the best choice below.) A.Take the present amount offered because it is greater than the present value of the future amount. Take the present amount offered...
-
A risk-averse investor has the following two stocks, A and B, their characteristics are presented in the table below. Stock A B Expected Return 10% 20% Standard Deviation Corr (A,B) 22% 0.25 30% a....
-
Information graphics, also called infographics, are wildly popular, especially in online environments. Why do you think infographics continue to receive so much attention? How could infographics be...
-
Titanium dioxide (TiO 2 ) is used extensively as a white pigment. It is produced from an ore that contains ilmenite (FeT i O 3 ) and ferric oxide (Fe 2 O 3 ). The ore is digested with an aqueous...
-
A stream of oxygen enters a compressor at 298 K and 1.00 atm at a rate of 127m3/h and is compressed to 358 K and 1000 atm. Estimate the volumetric flow rate of compressed O2 using the...
-
A poundal is the force required to accelerate a mass of 1 lbm at a rate of 1 ft/s2, and a slug is the mass of an object that will accelerate at a rate of 1 ft/s2 when subjected to a force of 1 lbf....
-
Reconsider the data from Problem 57 (Orpheum Productions lighting enhancement). Assume that any money not invested in the lighting enhancements will be placed in an interest-bearing account earning...
-
An investor has \($100,000\) to invest in a business venture, or she can earn 10 percent/year with a \($100,000\) certificate of deposit for 4 years. Three possible business ventures have been...
-
This problem is related to Problem 8. Jeff has $10,000 to invest for a period of 5 years. The following three alternatives are available at his bank: Data from problem 8 Jeff has $10,000 to invest...
Study smarter with the SolutionInn App