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Process Data set: ethylene glycol production ; ethylene glycol ; ethane to ethylene glycol (en) en zh

Key Data Set Information
Location LYG-JS-CN
Geographical representativeness description The case factory for modelling the OEG route sources from the project Lianyungang Petrochemical Co. Ltd. The project was built in 2018, with an annual production capacity of ethylene glycol approximately 1.82 million ton
Reference year 2018
Name
ethylene glycol production ; ethylene glycol ; ethane to ethylene glycol
Use advice for data set Users of this LCA dataset for paraxylene production should note that we considered the waste flows from production processes but excluded the environmental burdens of waste disposals (e.g., incineration), factory infrastructure construction, and equipment maintenance from the scope of analysis.
Technical purpose of product or process As a basic chemical material, ethylene glycol is crucial to its downstream economic industries of polyester, textile and apparel, packaging materials, electronic appliances.
Classification
Class name : Hierarchy level
  • ILCD: Materials production / Organic chemicals
General comment on data set The objective of the LCA model in this study is to quantitatively assess the environmental loads of ethylene glycol produced by OEG. The functional unit of the LCA model is defined as making one ton of ethylene glycol product with a purity of 99.9% in weight. The system boundary of ethylene glycol production was defined as "cradle to gate". The LCA was performed by the attributional method that assigns the specific environmental impacts to its functional unit. The specific processes include ethylene production by cracking naphtha as raw material, followed by ethylene oxide, which is finally converted to ethylene glycol product by hydration.
Copyright No
Owner of data set
Quantitative reference
Reference flow(s)
Time representativeness
Time representativeness description Craft built in 2018
Technological representativeness
Technology description including background system The inflows includes the consumption of all raw materials, energy, electricity, steam, water and auxiliary chemicals, while the outflows reflects the outputs of ethylene glycol and its byproducts (e.g., diethylene glycol and triethylene glycol).
Flow diagram(s) or picture(s)
  • DWwXbcGqyoT6hdx4iWFcpzcbnVd.png Image
Mathematical model
Model description Feedstocks of coal, naphtha and ethane come from varied market sources. Therefore, we excluded the environmental burdens of raw materials transportation to lower the uncertainties.
LCI method and allocation
Type of data set Unit process, black box
LCI Method Principle Attributional
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 Raw data are from the case plant of Lianyungang Petrochemical Co., Ltd.
Deviation from data selection and combination principles / explanations None
Data treatment and extrapolations principles We followed the cut-off rule to ignore the environmental impacts of complex chemicals with mass less than 1% of the total materials input. For example, in the ethane cracking process to produce ethylene in the EEG route, we ignored the environmental bur dens of the polymerization inhibitor.
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) 2024-05-11T18:00:56+08:00
Publication and ownership
UUID f5a9c2d3-b3c9-46f5-af30-e81d3851f0c2
Date of last revision 2024-05-13T15:00:12.810758+08:00
Data set version 01.00.005
Permanent data set URI https://lcadata.tiangong.world/showProcess.xhtml?uuid=f5a9c2d3-b3c9-46f5-af30-e81d3851f0c2&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
Emissions / Emissions to air / Emissions to air, unspecified 660.47 kg660.47 kg
General comment Ethylene
Product flow
Materials production / Inorganic chemicals 6038.43 kg6038.43 kg
General comment Oxygen
Product flow
Materials production / Inorganic chemicals 8.09 kg8.09 kg
General comment Nitrogen
Product flow
Use and consumption / Other use and consumption 1.0E-8 kg1.0E-8 kg
General comment Catalysts
Product flow
Materials production / Raw materials 0.013900000000000001 kg0.013900000000000001 kg
General comment Activated Carbon
Elementary flow
Emissions / Emissions to water / Emissions to water, unspecified 0.03 kg0.03 kg
General comment Ammonia
Product flow
Energy carriers and technologies / Electricity 918.432 MJ918.432 MJ
General comment Electricity

Outputs

Type of flow Classification Flow Location Mean amount Resulting amount Minimum amount Maximum amount
Product flow
Materials production / Organic chemicals 1000.0 kg1000.0 kg
General comment Ethylene glycol
Product flow
Materials production / Raw materials 126.41 kg126.41 kg
General comment Ethylene oxide
Elementary flow
Emissions / Emissions to water / Emissions to water, unspecified 0.47529000000000005 kg0.47529000000000005 kg
General comment COD