University:
North Seattle College
Course:
CHEM 122 | Introduction to Organic Chemistry
Academic year:

2022
Views:

5

Pages:

2
Author:

WillAnd88

★ - right answer 1) The common type of Dry shedder used for reducing the size of biomass is Hydropulper Horizontal shaft hammer mill Vertical shaft hammer mill ★ Both b and c 2) The density and moisture content of baled straw is in the range of 50-70 kg/m^3 and 5-10 wt% 70-90 kg/m^3 and 20-30 wt% ★ 70-90 kg/m^3 and 10-15 wt% 50-70 kg/m^3 and 10-15 wt% 3) The increase in moisture content of biomass _ the boiler efficiency ★ Decreases Increases Boiler efficiency is independent of moisture content None of the above 4) The temperature maintained in the pyrolysis zone of a gasifier is 200-300°C ★ 315-1000°C 1000-1100°C 1100-1200°C 5) In the updraft gasifier, the gasfying agent enters from _ and fuel enters from _ Bottom and top Top and top ★ Bottom and top Bottom and bottom 6) The retention time for vacuum pyrolysis is? Less than 2s 55-60 s 30-45 s ★ 2-30 s 7) In the pyrolysis process, the mechanical mixing of biomass and sand is done in which type of the reactor? Fluidized bed reactor Ablative reactor ★ Rotating cone reactor Fixed-bed batch reactor 8) Which of the following is/are false for DBT-ICT 2G-ethanol technology? Low conversion Recovery of enzyme/chemicals Slow process (takes more than 24h) ★ Both a and c 9) Which of the following can be identified as pre-consumer food and post-consumer food respectively? Commercial (cafeteria) and institutional (agricultural waste) ★ Commercial (agricultural waste) and institutional(cafeteria) Institutional(cafeteria) and Commercial (agricultural waste) None of the above 10)The reactor employed in the BTG fast pyrolysis is? Fluidized bed reactor Vacuum pyrolysis reactor ★ Rotating cone reactor Ablative reactor