Close Go back Collapse all sections
Process Data set: cement production;cement, ordinary portland cement, 42.5MPa (en) en zh

Key Data Set Information
Location BJ-CN
Geographical representativeness description Beijing Liulihe Cement Plant
Reference year 2008
Name
cement production;cement, ordinary portland cement, 42.5MPa
Use advice for data set When using this data set for Life Cycle Assessment (LCA) of construction projects involving 42.5 MPa OPC, it is critical to include both the coal used for clinker calcination and the supplementary coal for waste heat power generation. The user should apply the accumulated unit process data for energy consumption and air pollution as per the LCI results. Ensure that the methodological framework of the LCA considers the full scope of the production process, from raw material extraction to cement grinding. Comparisons with other cement production data sets should consider technological variability, geographic specificity, and temporal relevance to ensure accurate and context-appropriate LCA results.
Technical purpose of product or process Ordinary Portland cement (OPC) with a strength grade of 42.5 MPa, as described in this data set, is commonly used for general construction purposes including buildings, bridges, pavements, and other infrastructure works. This specific grade of cement is suitable for use in concrete where moderate strength is sufficient and in environments with a low risk of sulfate attack.
Classification
Class name : Hierarchy level
  • ILCD: Unit processes / Materials production / Other mineralic materials
General comment on data set The coal consumption of this cement factory includes two parts: coal for clinker calcination and coal for supplementary firing of waste heat power generation boilers.
Copyright No
Owner of data set
Quantitative reference
Reference flow(s)
Technological representativeness
Mathematical model
Model description It is stipulated that the performance of 1kg42.5 ordinary Portland cement is a functional unit; the research scope includes the production process from cement raw material mining, energy production, raw meal preparation, clinker calcination, to cement grinding.
LCI method and allocation
Type of data set LCI result
Deviation from LCI method principle / explanations None
Deviation from modelling constants / explanations None
Data sources, treatment and representativeness
Deviation from data cut-off and completeness principles / explanations None
Data selection and combination principles Primary resource consumption adopts the life cycle emission data of my country's resource and energy production calculated by Di Xianghua. Basic cement production data (process resources, energy consumption) of Beijing Liulihe Cement Plant.
Deviation from data selection and combination principles / explanations None
Data treatment and extrapolations principles Energy consumption and air pollutant data: unit process data accumulation.
Deviation from data treatment and extrapolations principles / explanations None
Data source(s) used for this data set
Completeness
Completeness of product model No statement
Validation
Type of review
Dependent internal review
Reviewer name and institution
Data generator
Data set generator / modeller
Data entry by
Time stamp (last saved) 2024-04-19T19:02:06+08:00
Publication and ownership
UUID a20a9fb3-7d8e-4fbb-a47e-233b82f2aa39
Date of last revision 2024-04-20T14:40:21.797324+08:00
Data set version 00.01.005
Permanent data set URI https://lcadata.tiangong.world/showProcess.xhtml?uuid=a20a9fb3-7d8e-4fbb-a47e-233b82f2aa39&version=01.00.000&stock=TianGong
Owner of data set
Copyright No
License type Free of charge for all users and uses

Inputs

Type of flow Classification Flow Location Mean amount Resulting amount Minimum amount Maximum amount
Elementary flow
Resources / Resources from ground / Non-renewable material resources from ground 1060.0 kg1060.0 kg
General comment Limestone
Product flow
Materials production / Other mineralic materials 90.4 kg90.4 kg
General comment Sandstone
Elementary flow
Resources / Resources from ground / Non-renewable element resources from ground 61.6 kg61.6 kg
General comment Iron
Elementary flow
Resources / Resources from ground / Non-renewable material resources from ground 65.3 kg65.3 kg
General comment Bauxite
Elementary flow
Resources / Resources from ground / Non-renewable material resources from ground 76.1 kg76.1 kg
General comment Gupsum
Elementary flow
Resources / Resources from ground / Non-renewable energy resources from ground 394.0 MJ394.0 MJ
General comment Coal consumption
Product flow
Energy carriers and technologies / Crude oil based fuels 7.15 kg7.15 kg
General comment The original literature is fuel oil consumption (i.e. heavy oil).
Product flow
Materials production / Other mineralic materials 0.657 kg0.657 kg
General comment Natural gas

Outputs

Type of flow Classification Flow Location Mean amount Resulting amount Minimum amount Maximum amount
Elementary flow
Emissions / Emissions to air / Emissions to air, unspecified 846.0 kg846.0 kg
General comment CO2. The main sources of CO2 emissions are from the combustion of fossil fuels such as fuel and coal, as well as the decomposition of limestone in raw materials used in cement production. (1) The formula for estimating the amount of CO2 emissions from fossil fuel combustion is E = 3.67FQka, where E is the amount of CO2 emissions (kg), F is the amount of fuel consumption (kg), Q is fuel heat (MJ/kg), k is the carbon emission coefficient of the fuel, and a is the fuel carbon oxidation rate. (2) During cement production, the chemical reaction of raw material limestone produces a large amount of CO2, the chemical reaction formula is as follows CaCO3→CaO+CO2↑, the calcium carbonate content of limestone is estimated at 96%, 1kg decomposition generates about 0.54kg of CaO, and 0.42kg of CO2 is generated. The formula for estimating CO2 emissions is CO2 emissions = limestone consumption × CaCO3 content × (CO2 molecular weight/CaCO3 molecular weight) + E.
Elementary flow
Emissions / Emissions to air / Emissions to air, unspecified 3.4 kg3.4 kg
General comment The NOx emission estimation formula is E = 0.001Fa (1-rf), where E is the amount of NOx emissions (kg), F is the amount of fuel consumption (kg), a is the NOx emission factor during fuel combustion, r is the coverage of nitrogen removal equipment, and f is the average nitrogen removal efficiency. Currently, there are few nitrogen removal equipment in China, so nitrogen removal is not considered. The emission factors for raw coal and crude oil are 9.95 kg/t and 7.24 kg/t, respectively, and for natural gas it is 4.1 g/m3.
Elementary flow
Emissions / Emissions to air / Emissions to air, unspecified 2.24 kg2.24 kg
General comment The formula for estimating SO2 emissions is E = Fa (1-rf), where E is the amount of SO2 emissions (kg), F is the amount of fuel consumption (kg), a is the SO2 emission factor during fuel combustion, r is the coverage rate of desulfurization equipment, and f is the average desulfurization efficiency. Emission factor of SO2, raw coal is taken as (1.05E-2) kg/kg.
Elementary flow
Emissions / Emissions to air / Emissions to air, unspecified 0.59 kg0.59 kg
General comment The formula for estimating CO emissions is E = Fqa, where E is the amount of CO emissions (kg), F is the amount of fuel consumption (kg), a is the CO emission factor during fuel combustion, and Q is the fuel heat content (MJ/kg). The CO emission factor for raw coal generation is taken as 106kg/MJ.
Elementary flow
Emissions / Emissions to air / Emissions to air, unspecified 24.5 kg24.5 kg
General comment Dust, with an unspecified particle size, is treated as PM > 10 micrometers in diameter.
Product flow
Materials production / Other mineralic materials 1000.0 kg1000.0 kg
General comment 42.5 Ordinary portland cement.