Lecture 14

Question 1

Gasification

Answer 1

Chemical process whereby gaseous fuel is produced from solid fuel

Question 2

What type of gasification is old technology and used in the 1800s

Answer 2

Coal gasification

Question 3

Another type of gasification besides coal that has been used for heating, lighting, and vehicle fuel

Answer 3

Wood gasification

Question 4

Why did coal and wood taken over over the last 80 years

Answer 4

Low natural gas and gasoline prices

Question 5

Common themes of technology for gasification

Answer 5

• High temperatures
• Pressure
• Oxygen

Question 6

Another name for producer gas

Answer 6

Syngas

Question 7

What is producer gas generated from

Answer 7

Volatiles

Question 8

What combustible compounds are volatiles made from

Answer 8

• Hydrogen
• Carbon monoxide
• Methane
• Other hydrocarbons

Question 9

What can gas from gasification be used for

Answer 9

Anything natural gas could be used for

Question 10

Two main types of gasifiers

Answer 10

Updraft
Downdraft

Question 11

Zones of biomass gasification

Answer 11

Pyrolysis zone
Oxidation zone
Reduction zone

Question 12

Pyrolysis zone

Answer 12

Initial breakdown

Question 13

Oxidation zone

Answer 13

Typical combustion

Question 14

Reduction zone

Answer 14

Small flammable molecules are created

Question 15

What does the choice of gasification depend on

Answer 15

Biomass source, technology available, process used