Coal Flashcards
1
Q
Primary energy consumption
A
coal = 25%
2
Q
electricity generation
A
coal = 40%
3
Q
Top coal producers
A
China USA India Australia S Africa
4
Q
Coal reservers
A
almost every country, resources in around 70
5
Q
proven coal reserves (time)
A
147 years
6
Q
proven oil and gas (time)
A
41 and 63 years
7
Q
68% oil 67% gas where?
A
Middle East
8
Q
Coal prices
A
varied, currently quite high (US$63.67/tonne)
9
Q
properties of coal
A
high C and H
10
Q
Volatile content of coal
A
> 30% RICH easy to ignite
LOW hard to ignite but smoke free flame
11
Q
calorific values of coal
A
15-25kJg-1 lignites
31-35kJg-1 bituminous coals
30-33kJg-1 anthracites
12
Q
low rank coals [2]
A
lignite (power) and sub-bituminous (power gen, cement)
13
Q
hard coal [2]
A
bituminous and anthracite (domestic)
14
Q
bituminous [2]
A
thermal (steam) or metallurgical (cooking)
15
Q
coal seam env
A
marine/non-marine interface
