18 Questions
What is the first step in the production of biogas, syngas, pure hydrogen, and alkaline gases?
Conversion of coal or biomass in a gasifier
What is a disadvantage of the indirect hydration method of ethanol synthesis?
It produces SO2 as a side product
What is the current target of ethanol blending in India?
10%
What is the primary use of ethanol in the synthesis of esters?
As a reactant
Which company first used the direct catalytic hydration method of ethanol synthesis in 1947?
Shell
What is the primary purpose of using a submerged burner in the indirect hydration method of ethanol synthesis?
To evaporate water from dilute H2SO4
What percentage of propylene is used by the petroleum refining industry?
50-70%
What is the primary use of propylene oxide?
Polyurethane plastic and foam
What is the percentage of ethylene used for the production of ethylene oxide?
13%
What is the percentage of propylene used for the production of polypropylene?
47%
What is the percentage of ethylene used for the production of polyethylene (LD)?
27%
What is the traditional method of producing ethylene?
Partial hydrogenation of acetylene
What is the conversion percentage of C2H4?
4%
What is the primary source material used in industrial ethanol production?
Molasses
What is the purpose of adding sulphuric acid in the ethanol production process?
To favour yeast growth and inhibit bacterial growth
What is the percentage of fermentable sugar present in molasses?
60%
What is the temperature at which yeast is added to the molasses solution?
35°C
What is the percentage of purity of ethanol obtained after fermentation?
15% to 18%
Test your knowledge on the properties and uses of ethanol, including its synthesis, applications as a solvent and gasoline additive, and production statistics.
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