How to design Batch and semi-batch reactors
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Chemical reactors sometimes use batch processes to heat chemical compounds in a transient heating operation. Assume that a chemical compound of density p = 1400 kg/m and specific heat c = 2500 J/kg/K is in a batch reactor of volume of V = 3.5 m in an insulated vessel. The chemical is to be heated from cold storage temperature of T; = 260 K, to a process temperature of T = 420 K by passing saturated steam at Th =...
3.1
Answer (a), (b), and (c)
3.1 A batch of parts is produced on a semi-automated production machine in a sequential batch production operation. Batch quantity is 300 units. Setup takes 55 min. A worker loads and unloads the machine each cycle, which takes 0.75 min. Machine processing time is 3.46 min/cycle, and tool handling time is negligible. One part is produced each cycle. Determine (a) average cycle time, (b) time to complete the batch, and (c) average production rate.
Following figure shows part of a plant in which five reactors
were in parallel. There were two gas-feed lines with cross
connections between them. Oxygen was also fed to the reactors, but
the oxygen lines are not shown. Al the time of the incident only
two reactors, Nos. 1 and 4, were on line. The operator thought
valve B was open, so he shut valve A. This stopped the flow of gas
to No. 1 reactor. The oxygen flow was...
Question 1: Design of isothermal reactors 30 Marks The irreversible, gas-phase reaction A+B D is to be carried out in an isotherma °C) plug-flow reactor (PFR) at 5.0 atm. The mole fractions of the feed streams are A 0 B 0.50, and inerts 0.30. The activation energy for the above reaction is 80 000 cal/mol. the pressure drop due to fluid friction in the reactor is so small that it can be ignored, perform the following tasks: 2T a s...
Liquid sodium metal is used as a heat transfer material to cool nuclear reactors. How much heat is required to heat 75.0 g of sodium from 25oC to 515oC? The melting point of sodium is 97.8oC; the specific heat of sodium is 1.23 J/goC; the molar heat of fusion of sodium is 2.60 kJ/mol; and the specific heat of liquid sodium is 1.38 J/g oC.
. Please design a standard TM (i.e., a single semi-infinite tape, deterministic) for the laın guage of all palindromes over alphabet {a, b} . Please give both the high-level description (text description or pseudo-code algorithm) and the low-level state transition diagram. Please analyze how many steps (one transition is considered as a step) it takes to accept an input palindrome with n symbols . Please design a deterministic Turing machine with two semi-infinite tapes for the same language. Please give...
What are your delivery batch quantities? How could you reduce batch size and reduce delivery cost simultaneously using Operations Management concepts?
QUESTION 2: Design of Multiple Reactors: 30 marks B +C was a a) An elementary reaction A reaction A B +C was carried out in a reactor system using an ideal STR followed by an ideal PER Isothermany. The rate constant is k = 0.4 min ". The volumetric flow rate is 20 L/min. The concentration of A in the feed is 5 moles/L. 1. Calculate the volume of the CSTR necessary to achieve a conversion of 50%. (7 marks)...
What are your delivery batch quantities? How could you reduce batch size and reduce delivery cost simultaneously using Operations Management concepts?
Need help answering these questions 1. How does interactive processing differ from batch processing? 2. Discuss the importance of consistency in programming design. 3. Under what circumstances would you use a validation loop? 4. Discuss the meaning of the following sentence: Although functions, methods, and properties can yield the same results, their syntax differs.