Chemical Engineering

Ethylene liquid is stored in a 0.5m3 vessel at its vapor pressure and at temperature of 243K. The liquid occupies only 70% of the vessel volume. Estimate the mass of the liquid. The vapor pressure of ethylene at 243 is 40bar

Ethylene liquid is stored in a 0.5m3 vessel at its vapor pressure and at temperature of 243K.The liquid occupies only 70% of the vessel volume. Estimate the mass of the liquid. Thevapor pressure of ethylene at 243 is 40bar EXPERT ANSWER

construct txy diagram ata pressure of 101.3kpa and pxy diagram at atemperature of 105 degree celsius for n heptane and n octane mixture which behaves ideally.

construct txy diagram ata pressure of 101.3kpa and pxy diagram at atemperature of 105 degree celsius for n heptane and n octane mixture which behaves ideally. EXPERT ANSWER I will use aspen plus to construct Txy & Pxy diagram. (1) TXY Diagram I will use ideal gas method as a property estimation method. Data from …

construct txy diagram ata pressure of 101.3kpa and pxy diagram at atemperature of 105 degree celsius for n heptane and n octane mixture which behaves ideally. Read More »

7.27 A mixture of 40 mol% carbon disulfide (CS2) in carbon tetrachloride (CC14) is continuously distilled. The feed is 50% vaporized (q 0.5). The top product from a total condenser is 95 mol% CS2, and the bottoms product from a partial reboiler is a liquid of 5 mol% CS 2. The column operates with a reflux ratio, LID, of 4 to 1. The Murphree vapor efficiency is 80% (a) Calculate graphically the minimum reflux, the minimum boilup ratio from the reboiler, VIB, and the minimum num ber of stages (including reboiler). (b) How many trays are required for the actual column at 80% efficiency by the McCabe-Thiele method The vapor-liquid equilibrium data at column pressure for this mixture in terms of CS2 mole fraction are x 0.05 0.1 0.2 0.3 0.4 0.5 0.6 0.70.8 0.9 y 0.135 0.245 0.42 0.545 0.64 0.725 0.79 0.85 0.905 0.955

Solve the carbon disulfide/carbon tetrachloride system discussed in problem 7.27 of the text and determine the following additional quantities: 1. The minimum reflux ratio 2. The minimum number of equilibrium stages 3. The number of equilibrium stages required at 1.5 times the minimum reflux EXPERT ANSWER

Q4) Yousif pushes toward the right on a box with a force of magnitude 31.0 N. Sarah applies an 11.0 N force on the box in the opposite direction. The magnitude of the kinetic friction force between the box and the very smooth floor is 4.50 N as the box slides toward the right. Also, the magnitude of the normal force is 98 N. For the above information, find the following? 1. The free-body diagram 2. The mass of the box 3. The box’s acceleration in the x-direction 4. The box’s acceleration in the y-direction 5. coefficient of dynamic friction

EXPERT ANSWER EXPLANATION- here given the all forces in all directions . normal force is = 98 N. kinetic force is = 4.5 N. take value of gravitational acceleration is = 9.8 m/s^2 see full solution in my hand written—— Criven – All force direction => with Free body Diagram or our किया गया। या …

Q4) Yousif pushes toward the right on a box with a force of magnitude 31.0 N. Sarah applies an 11.0 N force on the box in the opposite direction. The magnitude of the kinetic friction force between the box and the very smooth floor is 4.50 N as the box slides toward the right. Also, the magnitude of the normal force is 98 N. For the above information, find the following? 1. The free-body diagram 2. The mass of the box 3. The box’s acceleration in the x-direction 4. The box’s acceleration in the y-direction 5. coefficient of dynamic friction Read More »

A furnace burns a petroleum coke containing 90% C, 2% H, 3% ash, and 5% moisture. Excess air for combustion is maintained at 20%, and 5% of the carbon and hydrogen in the fuel is lost unburned in the refuse. Eight percent of the carbon in the flue gas is present as carbon monoxide. The air used for combustion contains water vapor at a pressure of 10 mmHg, and the barometric pressure is 740 mm Hg. Calculate the following:

a. The analysis of the dry flue gas b. The mole of wet flue gas per pound of coke fired. EXPERT ANSWER The reactions occuring are Basis : 1 lb coke Fuel analysis C – 0.90 lb H – 0.02 lb Ash – 0.03 lb Moisture – 0.05 lb M. W of C = 12 …

A furnace burns a petroleum coke containing 90% C, 2% H, 3% ash, and 5% moisture. Excess air for combustion is maintained at 20%, and 5% of the carbon and hydrogen in the fuel is lost unburned in the refuse. Eight percent of the carbon in the flue gas is present as carbon monoxide. The air used for combustion contains water vapor at a pressure of 10 mmHg, and the barometric pressure is 740 mm Hg. Calculate the following: Read More »

E4.6-3 Yield and Selectivity in a Dehydrogenation The reactions take place in a continuous reactor at steady state. The feed contains 85.0 mole% ethane and the balance inerts (1). The fractional conversion of ethane is 0.501, and the fractional vi) ethylene is 0.471. the to methane production. ethylene e producifnlate the molar composition of the product gas and the selctivity of etnld e Basis: 100 mol Feed 100 mol 0.850 mol C2He/mol 0.150 mol Umo! し ,ri (mol C2H6) ,12 (mol C2H4) n3 (mol H2) n4 (mol CH4) ns (mol )

EXPERT ANSWER given data feed F=100 mol mole fraction of ethane in feed xethane = 0.85                 moles of ethane in feed = xethane F =85 mol moles fraction of inert xi =0.15                               moles of inert in feed=xiF=15mol fractional convertion of ethane Xe = 0.501   =reacted ethane/total ethane in feed therefore reacted ethane=0.501*85=42.585mol unreacted ethane=85-42.585=42.415 fractional Yield of ethylene Yethylene=0.471=ethane reacted …

E4.6-3 Yield and Selectivity in a Dehydrogenation The reactions take place in a continuous reactor at steady state. The feed contains 85.0 mole% ethane and the balance inerts (1). The fractional conversion of ethane is 0.501, and the fractional vi) ethylene is 0.471. the to methane production. ethylene e producifnlate the molar composition of the product gas and the selctivity of etnld e Basis: 100 mol Feed 100 mol 0.850 mol C2He/mol 0.150 mol Umo! し ,ri (mol C2H6) ,12 (mol C2H4) n3 (mol H2) n4 (mol CH4) ns (mol ) Read More »

Methane and oxygen react in the presence of a catalyst to form formaldehyde. In a parallel reaction, methane is oxidized to carbon dioxide and water:

CH4 + O2 => HCHO + H2OCH4 + 2O2 => CO2 + H2O The feed to the reactor contains equimolar amounts of methane and oxygen. Assume a basis of 100mol feed/s.a) Draw and label a flowchart. Use a degree-of-freedom analysis based on extents of reaction todetermine how many process variable values must be specified for …

Methane and oxygen react in the presence of a catalyst to form formaldehyde. In a parallel reaction, methane is oxidized to carbon dioxide and water: Read More »

A furnace burns a petroleum coke containing 90% C, 2% H, 3% ash, and 5% moisture. Excess air for combustion is maintained at 20%, and 5% of the carbon and hydrogen in the fuel is lost unburned in the refuse. Eight percent of the carbon in the flue gas is present as carbon monoxide. The air used for combustion contains water vapor at a pressure of 10 mmHg, and the barometric pressure is 740 mm Hg. Calculate the following:

a. The analysis of the dry flue gas b. The mole of wet flue gas per pound of coke fired A furnace burns a petroleum coke containing 90% C, 2% H, 3% ash, and 5% moisture. Excess air for combustion is maintained at 20%, and 5% of the carbon and hydrogen in the fuel is …

A furnace burns a petroleum coke containing 90% C, 2% H, 3% ash, and 5% moisture. Excess air for combustion is maintained at 20%, and 5% of the carbon and hydrogen in the fuel is lost unburned in the refuse. Eight percent of the carbon in the flue gas is present as carbon monoxide. The air used for combustion contains water vapor at a pressure of 10 mmHg, and the barometric pressure is 740 mm Hg. Calculate the following: Read More »