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WorksheetsBiomass Pyrolysis
Total questions: 15
Worksheet time: 12mins
What are the products of a pyrolysis process?
Bio-oil
Gaseous products
Biochar
Oxygen
These are the characteristics of bio-oil except?
High mosture content
High acidity
High density
High heating value
Which type pyrolysis process require a high heating rate but with a very short residence time?
Carbonization
Fast pyrolysis
Gasification
Vacuum pyrolysis
What is the main product of carbonization?
Charcoal
Bio-oil
Alcohols
Gaseous products
Which one of these is the correct order of the steps and stages of a conceptual fast pyrolysis process?
Drying, grinding, pyrolysis reaction, char separation, quenching
Drying, queching, pyrolysis reaction, char separation, grinding
Drying, grinding, queching, pyrolysis reaction, char separation
Drying, grinding, pyrolysis reaction, queching, char separation
What makes biomass pyrolysis interesting?
Substantial energy densification compared to solid fuel
Low retention of biomass carbon and energy
Easier handling and logistics for liquid
Operation at atmospheric pressure
Microalgae also can be used for pyrolysis process.
True
False
What are the types of fast pyrolysis reactors?
Bubbling fluidized bed
Ablative
Auger
Understoker
What are the fluidized bed heating options for a pyrolysis process?
Hot wall
Recycled hot sand
Hot fluidizing gas
Hot tubes
Heat is transferred from hot reactor wall surface to melt biomass in virtue of high pressures, achieved due to centrifugal force. This statement refers to which type of pyrolysis reactor?
(a)
The concept of this pyrolysis reactor is that the biomass particles are fed into an impeller that is mounted at the base of heated cone which rotating. Which type of reactor is this?
(a)
What is the weakest part of the biomass to bio-oil development or fast pyrolysis system?
(a)
What are the positive impacts of the presence of water in bio-oil?
Improves flow characteristics during pumping and atomization
Leads to lower NOx emission
Lowers heating value of bio-oils
Increase in ignition delays
In a hydrodeoxygenation process, bio-oil react with which gas?
(a)
Besides bio-oil and gaseous compounds, what are other products of fast pyrolysis?
(a)
