Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Problem-
Grains, such as com and sorghum are used to produce ethanol for use in motor oil. A process for producing ethanol from grains is shown in the following figure. Crushed grains, water and enzymes are added to the enzyme reactor and heated to approximately 140°F and held at this temperature for 60-80 hours so that the enzymes can break down the carbohydrates of the grain into glucose. Steam is fed to a set of submerged coils in the tank to heat the solution and maintain the temperature. After the conversion to glucose is complete, the content of the enzyme reactor is pumped into the fermenter. Initially, a portion of the glucose stream is pumped into the fermenter and the inoculum (active yeast) is added. After the incubation period of approximately 2-3 hours, the reminder of the glucose from the enzyme reactor is pumped into the fermenter. Then the fermenter is operated at batch mode while maintaining pH by adding NaOH solution and temperature by using cooling water for total fermentation time of 15-20 hours until the desired EtOH concentration is attained. After the fermentation reactions are complete, the content is pumped to a distillation column, which concentrates EtOH in the overhead product to an 80 volume percent product. Please draw the control scheme with the following process information. The reflux ratio is 5. And, a partial condenser is used. The bottoms product of the column contains unconverted solids and weak EtOH solution (Figure given below).
(1) What is the control objective of this process?
(2) What safety control do you think are need for this process (do not need draw the scheme of safety controls)?
(3) Please draw the control scheme.
Additional information-
The problem relates to Mechanical Engineering and the problem is about the process of producing ethanol for motor oil production. The whole schemas for ethanol production starting from grain to glucose conversion, fermentation process and distillation process have been given. The safety control and safety schema of the process needs to be improved and verified. The solution contains all the details.
one pound mass of water in a piston-cylinder assembly initially a saturated liquid at 1 atm undergoes a
structure of body- centered cubic bcc crystal.a. the body-center atom in a conventional bcc unit cell has
air enters a machine at 373 k with a speed of 200 msec and leaves it at the temperature of the standard sea level
refrigerant 134a enters a compressor with a mass flow rate of 5 kgs and negligible velocity. the refrigerant enters the
a centrifugal compressor used in a gas turbine engine increases the pressure of 2000 lbmmin of air from 15 psia to 150
a 90 percent efficient turbine accepts water at 400 kpa in a 16 cm diameter pipe. what is the maximum power output if
The solid circular aluminium rod has a diameter d=40 mm and can be subjected simultaneously to a torque T in the direction shown and to a tensile axial load P. The modulus of elasticity is E=73 Gpa, and the shear modulus G= 28 Gpa.
Compute the electrical conductivity of a 3.6-mm diameter cylindrical semiconductor specimen 91 mm long in which a current of 0.90 A passes in an axial direction. A voltage of 7.5 V is measured across two probes that are separated by 61 mm. (b) Comput..
an appropriate correlation for heat transfer by natural commotion from a honzontal pipe to the atmosphere isnu
Water vapor enters a turbine operating at steady state at 1000°F, 140 lbf/in2, with a volumetric flow rate of 12.6 ft3 /s, and expands isentropic ally to 2 lbf/in2. Determine the power developed by the turbine, in hp. Ignore kinetic and potential ene..
hot air is contained in a vertical frictionless piston-cylinder device.the piston has a mass of 4 kg and a
An ideal gas (MW = 26.0 lbm/lb·mol) undergoes a poly tropic process (with poly tropic index being 1.67) from an initial state of 6.9836 ft3/lbm and 60°F to a final volume of 0.86848 ft3/lbm. Show the process on a P-v diagram. Find the specific work o..
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd