Industrial Plastics: Theory and Applications
6th Edition
ISBN: 9781285061238
Author: Lokensgard, Erik
Publisher: Delmar Cengage Learning
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We have a feed that is a binary mixture of methanol and water (55.0 mol% methanol) that is sent to a system of two flash drums hooked together. The vapor from the first drum is cooled, which partially condenses the vapor, and then is fed to the second flash drum. Both drums operate at a pressure of 1.0 atm and are adiabatic. The feed rate to the first drum is 1000.0 kmol/h. We desire a liquid product from the first drum that is 30.0 mol% methanol (x1 = 0.300). The second drum operates at a fraction vaporized of (V/F)2 = 0.250. The equilibrium data are in Table 2-8.
Find the following for the first drum: y1, T1, (V/F)1, and vapor flow rate V1.
Find the following for the second drum: y2, x2, T2, and vapor flow rate V2.
Show that the overall mass transfer coefficient, Ky, can be related to the individual
gas and liquid film mass transfer coefficients, ky and kx, respectively, by the
following equation:
1
K
y
=
1
+
m
kk
y
x
Use the approach given to solve
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- Antoine constants for vapor pressure for n-pentane and n-hexane are listed in Table 2-3. a. Predict the vapor pressure at 0.0°C for pure n-pentane. b. Predict the boiling point of pure n-pentane at 3.0 atm pressure. c. Predict the boiling pressure if pure n-pentane is boiling at 0.0°C. d. At a pressure of 500.0 mm Hg and temperature of 30.0°C, predict the K values for n-pentane and n-hexane using Raoult’s law. e. If T = 30.0°C and p = 500.0 mm Hg, determine the mole fractions in the liquid and vapor phases of an equilibrium mixture of n-pentane and n-hexane. f. 1.0 moles of a mixture that is 75.0 mol% n-pentane and 25.0 mol% n-hexane is placed in a closed chamber. The pressure is adjusted to 500.0 mm Hg, and the temperature to 30.0°C. The vapor and liquid mole fractions were found in part e. How many moles of liquid and moles of vapor are there at equilibrium? g. If 1.0 mol/min of a mixture that is 75.0 mol% n-pentane and 25.0 mol% n-hexane is fed continuously to an equilibrium flash…arrow_forwardA 40 mol % ethanol 60 mol % water mixture at 60 °C and 1 atm is heated. Using Figure 2-3 answer the following:a. At what temperature does the mixture first begin to boil? What is the composition of the first bubble of vapor?b. At what temperature would it stop boiling (assume no material is removed)? What is the composition of the last droplet of liquid?c. At 82 °C, what fraction is liquid? d. When 90% has been vaporized, what is the temperature, and what are the liquid and vapor compositions?arrow_forwardIs a component with a lower vapor pressure more or less volatile than a component with a higher vapor pressure? Briefly explain.arrow_forward
- 3.3. Use the following crude assay data with crude API of 36 to estimate cut vol%, critical properties and molecular weight for Light Naphtha (90- 190 °F) and Kerosene (380-520 °F). In addition, calculate the fractions of paraffins, naphthenes and aromatics in the two cuts. ASTM D86 (°F) Volume % Cum vol% SG 86 0.0 0.0 122 0.5 0.5 0.6700 167 1.2 1.7 0.6750 212 1.6 3.3 0.7220 257 2.7 6.0 0.7480 302 3.1 9.1 0.7650 347 3.9 13.0 0.7780 392 4.7 17.7 0.7890 437 5.7 23.4 0.8010 482 8.0 31.4 0.8140 527 10.7 42.1 0.8250 584 5.0 47.1 0.8450 636 10.0 57.1 0.8540 689 7.8 64.9 0.8630 742 7.0 71.9 0.8640 794 6.5 78.4 0.8890 20 8 002 09310 Iarrow_forwardProblem 1) A fractional factorial design has been used to study on the effect of 3 parameters including adsorbent concentration (300 and 500 ppm), pH value (4 and 10) and reaction time (6 and 12 hours) on the adsorption capacity of a composite for removing of methylene blue from a wastewater. If the results obtained for two repetitions of the tests are according to the following table, it is desirable: A) Design Resolution Y₁ Y₂ Run (mg/g) (mg/g) B) Drawing graphs of the effect of each parameter on the adsorption capacity 1 28 26 2 36 34 C) Analysis of interactions 3 18 20 D) Calculate the effects percentage of each parameter and error 4 32 30 E) Determining the optimum conditions to achieve the highest adsorption capacityarrow_forwardThermophysical Properties of Petroleum Fractions and Crude Ofls 67 3.4. A gas oil has the following TBP distillation data Volume % TBP (°C) 0 216 10 243 30 268 50 284 70 304 90 318 95 327 100 334 It also has an average boiling point of 280 °C and an average density of 0.850 g/cm³. (a) Split this gas oil fraction into five pseudo-components. Calculate T., Pc and w for each pseudo-component. (b) Calculate T, Pc and w for the whole gas oil fraction. (c) Calculate the enthalpy of this gas oil fraction at 400 °C using the Lee- Kessler correlation with a reference state of ideal gas at 273.15 K.arrow_forward
- 3.3. Use the following crude assay data with crude API of 36 to estimate cut vol%, critical properties and molecular weight for Light Naphtha (90- 190 °F) and Kerosene (380-520 °F). In addition, calculate the fractions of paraffins, naphthenes and aromatics in the two cuts. ASTM D86 (°F) Volume % Cum vol% SG 86 0.0 0.0 122 0.5 0.5 0.6700 167 1.2 1.7 0.6750 212 1.6 3.3 0.7220 257 2.7 6.0 0.7480 302 3.1 9.1 0.7650 347 3.9 13.0 0.7780 392 4.7 17.7 0.7890 437 5.7 23.4 0.8010 482 8.0 31.4 0.8140 527 10.7 42.1 0.8250 584 5.0 47.1 0.8450 636 10.0 57.1 0.8540 689 7.8 64.9 0.8630 742 7.0 71.9 0.8640 794 6.5 78.4 0.8890 20.8 99.2 0.9310arrow_forward۱۱۳ ۱۱۱۰ ۱۱۰ A + C Chegg Learn on the go = Chegg © chegg.com/homewo Open in app EN-US QUESTIONS AND PROBLEMS 4.1. With 100,000 BPD of the following crude (API = 36), estimate the products of the atmospheric distillation column. If the atmospheric residue of the crude is taken at 650+ F. It enters in a vacuum distilla- tion tower to give three products: light vacuum gas oil (650-850 °F), heavy vacuum gas oil (850-1050 °F) and vacuum residue (1050+ °F). Calculate the mass flow rate of these products. Then calculate the sulphur content (lb/hr) for each product. ASTM D86 (°F) vol% Cum vol% SG 86 0.0 0.0 122 0.5 0.5 0.6700 167 1.2 1.7 0.6750 212 1.6 3.3 0.7220 257 2.7 6.0 0.7480 3021 3.1 9.1 0.7650 347 3.9 13.0 0.7780 392 4.7 17.7 0.7890 437 5.7 23.4 0.8010 4821 8.0 31.41 0.8140 527 10,7 42.1 0.8250 584 5.0 47.1 0.8450 6361 10,0 57.1 0.8540 689 7,8 64.9 0.8630 7421 7.0 71.9 0.8640 794 6.5 78.4 0.8890 20.8 99.2 0.9310 Show transcribed image text Here's the best way to solve it. This problem…arrow_forwardQ1/obtain the transfer function for the block diagram shown in the figure below: G4 Garrow_forward
- (Population density parameters from sieve analysis data)2 One hundred fifty grams of crystals separated from one litre of suspension from an MSMPR crystallizer is subjected to screen analysis to get the following data: Tyler mesh Mass(g) 12/14 28.5 14/20 29.2 20/28 28/35 35/48 below 48 mesh 37.5 27 24.7 3.1 Mesh no./ screen opening(um) data: 12/1410 μm; 14/1190; 20/841; 28/595; 35/420; 48/297. The working volume of the crystallizer is 200 litres, and the rate of withdrawal of the slurry is 250 litre per hour. Given pc = 1400 kg/m³ and volume shape factor o, = 0.42, determine the crystal growth rate and the zero-size population density of the crystals. What is the rate of nucleation, Bº?arrow_forwardneed help with this phase transformations practise questionarrow_forwardhelp with this practise question on phase transformations.arrow_forward
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