Chemical Process Principles

How will you differentiate unit processes from unit operations in chemical industries? Explain heat transfer operations and fluid flow operations in detail

a.Convert a heat transfer coefficient of 175 Btu/h·ft²·°F into W/m²·°C. (2 marks) b.What is the weight of one litre of propane at standard conditions? (2 marks)

a. An aqueous solution contains 18% ethyl alcohol by volume. Express the composition in weight % and mole %. The densities of ethyl alcohol and water are 790 kg…

When heated to 100 °C and 720 mm Hg, 19.2 g of N₂O₄ gas occupies 11450 cc. Assuming the ideal gas law applies, calculate the percentage dissociation of N₂O₄ to…

A furnace is designed to burn coke at 200 lb/h. The coke is 91.1% C and 8.9% ash. The grate efficiency is such that 90% of the carbon charged is burnt. Air is s…

How many types of unit operations are used in chemical industries? Describe the mechanical operations in detail.

a. Convert the heat transfer coefficient of value 250 Btu/h·ft²·°F into W/m²·°C. (2 marks) b. How many grams of liquid butane will be formed by liquefaction of…

Natural gas has the following composition: CH₄: 91%, C₂H₆: 5% and N₂: 4%. This gas is piped from the well at 80 °F and 80 psi. Calculate the following: (a) Part…

A solvent recovery system delivers a gas saturated with benzene vapour which analyzes on a benzene-free basis as follows: CO: 11%, O₂: 7% and N₂: 82%. This gas…

A spent dye sample obtained from a soap-making unit contains 7.6% glycerol and 9.3% salt. It is concentrated at a rate of 5000 kg/h in a double effect evaporato…

How many types of unit operations are used in chemical industries? Describe the mass transfer operations in detail.

The flow rate of water through a pipe is reported as 20 cubic feet per minute. Taking density of water as 1 g/cm³, calculate the mass flow rate in kg/s.