Simple Output Method (B1) - Standard Calcination EF

B1 is the simple output method for determining the CO₂ emission from the calcination of raw materials. The method is based on clinker production, CKD and bypass dust leaving the kiln system and one standard CO₂ emission factor for the calcination CO₂ referenced to clinker (CSI default = 525 kg CO₂/t clinker). It has no separate calcination sheet as the other calculation methods have, but its data fields have been integrated into the plant sheet. For this reason, the simple output method is the pre-selection in line007n. Applying the detailed calcination CO₂ methods B2 (output) or A2 (input) is preferable, if more detailed and sufficiently accurate data can be made available.

Figure 6: Diagram of the simple output method (B1)

Please also see the Please also see the Protocol Guidance Document (Chapter 3.4).

The relevant input lines in the Plant sheet are:

line008: Clinker Production

line022, line023 and line024: Bypass dust and cement kiln dust (CKD) leaving the kiln system

The calcination rate d of the CKD should preferably be based on plant-specific data. In the absence of such data, a default value of 0 should be used for dry process kilns because CKD is usually not or only to a negligible degree calcined in a dry process. In other processes (half dry, half-wet or wet) calcination rates can be significant. In the absence of data, a default value of 1 should be used for these kiln types. This value is conservative, i.e. it will in most cases lead to an overstatement of CKD-related emissions.

The Protocol Guidance Document (Appendix 3) provides more detailed information on how to determine the calcination CO₂ emissions and the degree of calcination d based on analysis of the CO₂ content of CKD and raw meal.

line034m, line034n, line034o:

The grey colour of the input cells in the Plant sheet indicates that default values were pre-selected. These values shall be corrected by the cement company if more precise data are available

The standard calcination emission factor (EF) shall preferably be based on plant-specific data. National or regional standard values are also acceptable in the simple output method B1. In the absence of better data, a CSI default value of 525 kg CO₂/t clinker shall be used. This value is comparable to the IPCC default (510 kg CO₂/t) corrected for typical MgO contents in clinker.

Sheets

• See Sheet CalcB2 (Detailed Output Method)

FAQs

• See FAQs on Calcination

Line-by-Line

• See Calcination Sheet B2

See Also