EBK ELEMENTARY PRINCIPLES OF CHEMICAL P
4th Edition
ISBN: 9781119192107
Author: BULLARD
Publisher: JOHN WILEY+SONS,INC.-CONSIGNMENT
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Textbook Question
Chapter 4, Problem 4.48P
In the production of a bean oil, beans containing 13.0 wt% oil and 87.0% sobds are ground and fed to a stirred tank (the extractor ) along with a recycled stream of liquid /i-hexane. The feed ratio is 3 kg hexane/kg beans. The ground beans are suspended in the liquid, and essentially all of the oil in the beans is extracted into the hexane. The extractor effluent passes to a filter where the solids are collected and form a filter cake. The filter cake contains 75.0 wt% bean solids and the balance bean oil and hexane, the latter two in the same ratio in which they emerge from the extractor. The filter cake is discarded and the liquid filtrate is fed to a heated evaporator in which the hexane is vaporized and the oil remains as a liquid. The oil is stored in drums and shipped. The hexane vapor is subsequently cooled and condensed, and the liquid hexane condensate is recycled to the extractor.
- Draw and label a flowchart of the process, do the degree-of-freedom analysis, and write in an efficient order the equations you would solve to determine all unknown stream variables, circling the variables for which you would solve.
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Students have asked these similar questions
a feed containing equimolar amounts of methanol and water is mixed with 10 moles of a 40% mol aqueous methanol stream. the mixture enters a first separation unit that creates two streams. a top stream exits the separation unit that contains 70% mol methanol and rest water. the bottom stream, which is 70 moles enters a second separation unit. A top stream exists the second separation unit as a 50% methanol & 50% water mixture. the other stream is unknown. if the fresh feed to the system is 100 moles (equimolar mixture) and the two top streams exiting the separation units have the same flow, draw the flow sheet and find the molar flow and the composition of the bottom streams existing the second separation unit?
A mixture containing 42 wt% benzene (B) and 58 wt% toluene (T) is fed to a distillation column at a flow rate of 100 kg per minute. The product steam leaving the top of the column (the overhead product) contains 90 wt% benzene and 85 wt% of the total benzene fed to the column exits in this overhead product stream.
Calculate the mass flow rate and mass composition of the product stream leaving the bottom of the column. Calculate the volumetric flow rate of the overhead product, assuming that it exits the distillation column as a vapour stream at 82C and 1 atm (abs).
Physical Property Data (S.G.= specific gravity) from table B-1:
Benzene
S.G. = 0.879
MW = 78.11 g/mol
Toluene
S.G. = 0.866
MW = 92.13 g/mol
Water
Density = 1.00 kg/L
MW = 18.02 g/mol
R = 0.08206 L atm/mol K
1. Fresh air containing 4.00 mole % water vapor is to be cooled and dehumidified to a water
content of 1.70 mole% H20. A stream of fresh air is combined with a recycle stream of
previously dehumidified air and passed through the cooler. The blended stream entering
the unit contains 2.30 mole% H2O. In the air conditioner, some of the water in the feed
stream is condensed and removed as liquid. A fraction of the humidified air delivered to
the cooler is recycled and the remainder is delivered to a room. Taking 100 mole of
dehumidified air delivered to the room as a basis of calculation; calculate the moles of
fresh feed, moles of water condensed, and moles of dehumidified air recycled.
Recycle stream (R)
Fresh air (F)
Dehumidifier
→ 100 moles
Water removed (Y)
Chapter 4 Solutions
EBK ELEMENTARY PRINCIPLES OF CHEMICAL P
Ch. 4 - Prob. 4.1PCh. 4 - Rain is falling on a poorly designed 150-m" flat...Ch. 4 - A liquid-phase chemical reaction A -* B takes...Ch. 4 - A stream consisting of 44.6 mole% benzene and...Ch. 4 - Prob. 4.5PCh. 4 - A liquid mixture of acetone and water contains 35...Ch. 4 - Prob. 4.7PCh. 4 - Prob. 4.8PCh. 4 - Inside a distillation column (see Problem 4.8), a...Ch. 4 - Prob. 4.10P
Ch. 4 - In the production of soybean oil, dried and flaked...Ch. 4 - Prob. 4.12PCh. 4 - A process is carried out in which a mixture...Ch. 4 - Strawberries contain about 15wt% solids and 85wt%...Ch. 4 - Two streams flow into a 500-gallon tank. The first...Ch. 4 - A fuel distributor supplies four liquid fuels,...Ch. 4 - Prob. 4.17PCh. 4 - One thousand kilograms per hour of a mixture...Ch. 4 - L-Serine is an amino acid that often is provided...Ch. 4 - A 100 kmol/h stream that is 97 mole% carbon...Ch. 4 - A pharmaceutical product, P, is made in a batch...Ch. 4 - A liquid mixture containing ethanol (55.0 wt%) and...Ch. 4 - A stream of humid air containing 1.50 mole% H2O(v)...Ch. 4 - A liquid mixture contains 60.0 wt% ethanol (E),...Ch. 4 - Certain vegetables and fruits contain plant...Ch. 4 - Two aqueous sulfuric acid solutions containing...Ch. 4 - A paint mixture containing 25.0% of a pigment and...Ch. 4 - In the commercial production of sugar (sucrose),...Ch. 4 - Prob. 4.29PCh. 4 - A garment to protect the wearer from toxic agents...Ch. 4 - A dilute aqueous solution of H2SO4 (Solution A) is...Ch. 4 - Gas streams containing hydrogen and nitrogen in...Ch. 4 - An artificial kidney is a device that removes...Ch. 4 - The indicator-dilution method is a technique used...Ch. 4 - Prob. 4.35PCh. 4 - Gas absorption or gas scrubbing is a commonly used...Ch. 4 - The SO2 scrubbing tower described in Problem 4.36...Ch. 4 - Prob. 4.38PCh. 4 - The hormone estrogen is produced in the ovaries of...Ch. 4 - A liquid mixture containing 30.0mole% benzene (B),...Ch. 4 - Seawater containing 3.50 wt% salt passes through a...Ch. 4 - Inside the column a liquid stream flows downward...Ch. 4 - Prob. 4.43PCh. 4 - Effluents from metal-finishing plants have the...Ch. 4 - In an absorption tower (or absorber), a gas is...Ch. 4 - In the production of a bean oil, beans containing...Ch. 4 - Boilers are used in most chemical plants to...Ch. 4 - Following is a diagram of the shirt-cleaning...Ch. 4 - A drug (D) is produced in a three-stage extraction...Ch. 4 - Prob. 4.52PCh. 4 - Ammonia is oxidized to nitric oxide in the...Ch. 4 - Prob. 4.54PCh. 4 - A stream containing H2S and inert gases and a...Ch. 4 - 436. The reaction between ethylene and hydrogen...Ch. 4 - Prob. 4.57PCh. 4 - Prob. 4.58PCh. 4 - Titanium dioxide (TiCb) is used extensively as a...Ch. 4 - Prob. 4.60PCh. 4 - Prob. 4.61PCh. 4 - Oxygen consumed by a living organism in aerobic...Ch. 4 - A genetically engineered strain of Escherichia...Ch. 4 - The gas-phase reaction between methanol and acetic...Ch. 4 - Prob. 4.65PCh. 4 - Prob. 4.66PCh. 4 - Methane and oxygen react in the presence of a...Ch. 4 - Ethane is chlorinated in a continuous reactor:...Ch. 4 - Ethanol can be produced commercially by the...Ch. 4 - Prob. 4.70PCh. 4 - Solid calcium fluoride (CaF2) reacts with sulfuric...Ch. 4 - Prob. 4.72PCh. 4 - Chlorobenzene (C^HsCl), an important solvent and...Ch. 4 - A catalytic reactor is used to produce...Ch. 4 - 4.7'6. Methanol is produced by reacting carbon...Ch. 4 - Methane reacts with chlorine to produce methyl...Ch. 4 - Ethylene oxide is produced by the catalytic...Ch. 4 - Methanol is synthesized from carbon monoxide and...Ch. 4 - The fresh feed to an ammonia production process...Ch. 4 - A gas contains 75.0 wt% methane. 10.0% ethane....Ch. 4 - Five liters of liquid n-hexane and 4 liters of...Ch. 4 - Gasoline, which we will represent as having the...Ch. 4 - Prob. 4.87PCh. 4 - Natural gas containing a mixture of methane,...Ch. 4 - Propane is burned completely with excess oxygen....Ch. 4 - Prob. 4.91PCh. 4 - Prob. 4.92PCh. 4 - Liquid methanol is fed to a space heater at a rate...Ch. 4 - Prob. 4.94PCh. 4 - Prob. 4.95PCh. 4 - A fuel oil is analyzed and found to contain 85.0...Ch. 4 - Prob. 4.97PCh. 4 - Prob. 4.98PCh. 4 - Prob. 4.99PCh. 4 - 4.1 (Mt. You have been sent by the Environmental...Ch. 4 - Fuel oils contain primarily organic compounds and...
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