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A new process is being developed for converting benzene to cyclohexane by hydrogenation over a noble metal catalyst. The reaction is carried out at 50 bara, at a feed temperature of 220 °C, and the reactor contents should not exceed 300 °C, to minimize formation of methylcyclopentane (MCP) by-product. The reaction is essentially irreversible under these conditions and the temperature can be controlled by staged addition of cold hydrogen. Six beds are to be used, each converting the same amount of benzene, with overall conversion of 100%. The average weight hourly space velocity based on benzene is 10 h-1 for each adiabatic bed, and a pressure drop of 0.5 bar is acceptable across each bed. The catalyst is in the form of 1/16th inch (1.588 mm) beads with average bulk density of 700 kg/m3 . Design, size, and cost a reactor for making 200,000 metric tons per year of cyclohexane using this process.
the paint formerly used on some storage tanks contained aluminum powder which reflected heat from the surface of the
Using the information in the above table to show how the specific volume of each liquid varies with temperature. You should plot a graph for each liquid and use this graph to estimate the exact value of a at 50°C for each liquid.
In the Deacon process for the manufacture of chlorine, HC1 and O2 react to form Cl2 and H20. Sufficient air (21 mole% 02, 79% N2) is fed to provide 35% excess oxygen and the fractional conversion of HCI is 85%.
Equal rates of mass transfer for the production of the fine chemical are required. This is often required for certain types of organic synthesis.
adsorption and membrane processeszeolites are used to adsorb a wide range of solutes from vapour and gas streams. what
Calculate the energy required to heat 1kg of CO 2 from 400ºC to 600ºC at a constant pressure of 1atm using:-
Reconsider the Methanol Water Distillation. If the feed stream contains 60 mol % methanol, reevaluate reflux ratio, number of stages required, and the column diameter.
(a) Describe the provisions of Occupational Safety and Health Act 2005 with regard to ‘Substances hazardous to health' (b) Describe four types of hazard which arise from the use of chemicals
The atmospheric pressure of 100k Pa acts on the other side of the piston. The gas is heated until the volume is doubled and the final pressure is 500 kPa. Calculate the work done by the gas.
1. A newly constructed power plant proposes to burn coal with a sulfur content of (a) 1.8 and (b) 2.4 percent by weight. If the plant is to meet the new source review performance standard (see attached CFR new source regulation), what percent of SO 2..
question 1a describe the main purpose of the globally harmonised system of classification and labelling of chemicalsb
What concentration of phosphorus (P) would you expect at the top of the boule (X=0)? If the boule is 1 m long and has a uniform cross section,at what position (or Xvalue)would you expect the concentration of phosphorus to be twice as large as it is..
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