Absolute or 100% ethanol is produced from a mixture of 95%
ethanol and 5% water using the Keyes distillation process. A third
component, benzene, is added to lower the volatility of the
alcohol. Under these conditions, the overhead product is a
constat-boiling mixture of 18.5% ethanol, 7.4% water and 74.1%
benzene. Use the following data to calculate the volume of benzene
that should be fed to the still in order to produce 250 litres of
absolute ethanol: density of 100%...
The ethanol-water mixture is separated on a distillation column. Feed contains 20% ethanol
and 1000 kmol / hour speed is entering the system. The feed temperature is 30ºC and its enthalpy is 15kcal / kg.
Saturated feed steam enthalpy 485 kcal / kg and saturated feed liquid enthalpy
70kcal / kg. Distillate has at least 80% ethanol and 2% ethanol concentration of the sub-product
is required to be. The feedback / distillate ratio is 5/3. System pressure is 1 atm....
After fermentation, a mixture of ethanol and water is sent to a
small distillation column. At the top of the distillation column, a
95% ethanol solution at 65°C is produced at a flow rate of 3.5
kg/s. Your job is to design a double-pipe heat exchanger that will
cool the 95% ethanol mixture to 40°C by using cooling water that is
available at 10°C. Assume an outlet temperature of the cooling
water of 55°C, and only use Schedule 40 pipe...
1.
A mixture of ethanol (ethyl alcohol, C2H6O) and water contains
70.0% water by mass. Assuming volume additivity of the components,
estimate the specific gravity of the mixture at 20 oC. What volume
(in liters) of this mixture is required to provide 100 mol of
ethanol? Molecular weight and density of ethanol are 46.07 and
789g/L, respectively.
2. A gas stream contains 18.0 mole% hexane and the remainder
nitrogen. The stream flows to a condenser, where its temperature is
reduced...
If a mixture of water-ethanol containing a significant amount of
methanol is being distilled (separation by VLE), can we state that
the methanol is not a problem because it boils off first?
Material Safety Data Sheets or Safety Data Sheets (MSDS/SDS) –
The Worker’s Right to Know Law grants employees the right to know
the hazards of all chemicals in their work place. These hazards can
be found in the MSDS or SDS forms that employers are required to
maintain for all hazardous chemicals used at the facility. MSDS and
SDS are very similar, but the latter is an updated version designed
to increase consistency.
MSDS/SDS: (10pts) (need word file) and post...
A liquid mixture containing ethanol (55.0wt%) and the balance
water enters a separation process unit at a rate of 90.5 kg/s. A
technician draws samples of the two product streams leaving the
separator and analyzes them with a gas chromatograph, obtaining
values of 86.2wt% ethanol (product stream 1) and 10.9% ethanol
(product stream 2). The technician then reads a manometer attached
to an orifice meter mounted in the pipe carrying product stream 1,
converts the reading to a volumetric flow...