PROCESS DYNAMIC+CONTROL-EBOOK>I<
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ISBN: 2819480255712
Author: Seborg
Publisher: INTER WILE
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Chapter 3, Problem 3.22E
Solve this ODE using a Symbolic software program:
All initial conditions for y and its derivatives are zero.
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Hydrogenation of Ethylbenzene to Styrene
Reaction: C₈H₁₀ → C₈H₈ + H₂ΔHᵣ°(300°C) = -124 kJ/mol (exact value unknown)
Process Description:
The basis is 1000 kg/h of separated styrene. The reaction conversion rate is 35%. The temperature increase in heat exchanger 2 is adiabatic.
A fresh stream of pure ethylbenzene (25°C) enters a mixing vessel, where it is combined with a recycle stream (from the distillation column, as explained later), which also consists of pure ethylbenzene at 25°C. After mixing, the stream is sent to a heat exchanger (HX1), where the mixture is heated to 200°C.
Next, the mixture enters an adiabatic heat exchanger (HX2), where it is further heated to 300°C by adding steam (at 350°C). This steam is used to prevent side reactions and carbon deposition in the reactor.
The heated mixture is then fed into the reactor, where the reaction takes place with a conversion rate of 35%. As a result, the mixture cools down to 260°C.
The resulting mixture is then sent to HX4, where…
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Chapter 3 Solutions
PROCESS DYNAMIC+CONTROL-EBOOK>I<
Ch. 3 - Find the Laplace transforms of the following...Ch. 3 - Prob. 3.2ECh. 3 - Prob. 3.3ECh. 3 - Prob. 3.4ECh. 3 - Prob. 3.5ECh. 3 - Using PFE where required, find X(t) for a....Ch. 3 - Expand each of the following s-domain functions...Ch. 3 - For the integro-differential equation,...Ch. 3 - Prob. 3.9ECh. 3 - Which solutions of the following equations will...
Ch. 3 - Prob. 3.11ECh. 3 - Find the complete time-domain solutions for the...Ch. 3 - Prob. 3.13ECh. 3 - Prob. 3.14ECh. 3 - Prob. 3.15ECh. 3 - Prob. 3.16ECh. 3 - UseLaplace transforms to find the solution to the...Ch. 3 - Prob. 3.18ECh. 3 - Prob. 3.19ECh. 3 - Prob. 3.20ECh. 3 - Prob. 3.21ECh. 3 - Solve this ODE using a Symbolic software program:...
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- Consider a mixture of carbon monoxide and water at 25°C:a. Does an azeotrope exist for this mixture at 25°C? If so, at what composition andpressure? If not, how do you know?b. If the total composition of the mixture is 10. mol% carbon monoxide, what will bethe pressure limits of VLE for this mixture at 25°C? show all the calculation stepsarrow_forwardA passive solar house was determined to lose heat to the outdoors at an average rate of 50,000 kJ/h during a typical 10-hour winter night. The house is to be maintained at 22°C at all times. Passive heating is accomplished by 50 glass containers each containing 20 L of water that is heated to 80°C during the day by absorbing solar energy. A 15-kW back-up electric resistance heater turns on whenever necessary to keep the house at 22°C. (a) How many hours does the electric heating system run during a typical winter night? (b) How many hours would the electric heater run during a typical winter night if the house did not have passive solar heating? For the density and specific heat of water at room temperature, use p = 1 kg/L and cp = 4.18 kJ/kg.°Carrow_forwardA well-insulated rigid tank contains 3 kg of a saturated liquid-vapor mixture of water at 200 kPa. Initially, three-quarters of the mass is in the liquid phase. An electric resistance heater placed in the tank is now turned on and kept on until all the liquid in the tank is vaporized. Determine the entropy change of the water during this process.arrow_forward
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