Division 2 Emission factors related to process emissions

United Kingdom

Table 2:

Stoichiometric emission factor for process emissions from carbonate decomposition (Method A)

Carbonate	Emission factor [t CO₂/t Carbonate]
CaCO₃	0,44
MgCO₃	0,522
Na₂CO₃	0,415
BaCO₃	0,223
Li₂CO₃	0,596
K₂CO₃	0,318
SrCO₃	0,298
NaHCO₃	0,524
FeCO₃	0,38
General	Emission factor = [M(CO₂)]/{Y * [M(x)] + Z *[M(CO₃ ^2-)]} X metal M(x) molecular weight of X in [g/mol] M(CO₂) molecular weight of CO₂ in [g/mol] M(CO₃ ^2-) molecular weight of CO₃ ^2- in [g/mol] Y stoichiometric number of X Z stoichiometric number of CO₃ ^2-

Table 3:

Stoichiometric emission factor for process emissions from carbonate decomposition based on alkali earth oxides (Method B)

Oxide	Emission factor [t CO₂/t Oxide]
CaO	0,785
MgO	1,092
BaO	0,287
general: X_YO_Z	Emission factor = [M(CO₂)]/{Y * [M(x)] + Z * [M(O)]} X alkali earth or alkali metal M(x) molecular weight of X in [g/mol] M(CO₂) molecular weight of CO₂ [g/mol] M(O) molecular weight of O [g/mol] Y stoichiometric number of X = 1 (for alkali earth metals) = 2 (for alkali metals) Z stoichiometric number of O = 1

Table 4:

Stoichiometric emission factors for process emissions from other process materials (production of iron and steel, and processing of ferrous metals)^f1

Input or output material	Carbon content(t C/t)	Emission factor(t CO₂/t)
IPCC 2006 Guidelines for National Greenhouse Gas Inventories.
Direct reduced iron (DRI)	0,0191	0,07
EAF carbon electrodes	0,8188	3,0
EAF charge carbon	0,8297	3,04
Hot briquetted iron	0,0191	0,07
Oxygen steel furnace gas	0,3493	1,28
Petroleum coke	0,8706	3,19
Purchased pig iron	0,0409	0,15
Scrap iron	0,0409	0,15
Steel	0,0109	0,04

Table 5:

Stoichiometric emission factors for process emissions from other process materials (Bulk organic chemicals)^f2

Substance	Carbon content(t C/t)	Emission factor(t CO₂/t)
IPCC 2006 Guidelines for National Greenhouse Gas Inventories.
Acetonitril	0,5852	2,144
Acrylonitrile	0,6664	2,442
Butadiene	0,888	3,254
Carbon black	0,97	3,554
Ethylene	0,856	3,136
Ethylene dichloride	0,245	0,898
Ethylene glycol	0,387	1,418
Ethylene oxide	0,545	1,997
Hydrogen cyanide	0,4444	1,628
Methanol	0,375	1,374
Methane	0,749	2,744
Propane	0,817	2,993
Propylene	0,8563	3,137
Vinyl chloride monomer	0,384	1,407

Annotations

Footnotes

f1: IPCC 2006 Guidelines for National Greenhouse Gas Inventories.
f2: IPCC 2006 Guidelines for National Greenhouse Gas Inventories.