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Process Data set: open-pit coal mining ; coal mining (en) en zh

Key Data Set Information
Location CN
Geographical representativeness description Open-pit coal production in 1994 according to China Coal Industry Yearbook statistics. There is no gas disaster and no measured data of methane emission in open-pit coal mine. Considering that the mining depth of this kind of coal mine is small and the gas content of coal seam is low, when estimating the methane emission coefficient, it is taken as half of the methane emission coefficient of the low gas mine in the state-owned key coal mine.
Reference year 2005
Name
open-pit coal mining ; coal mining
Use advice for data set When utilizing this data set for Life Cycle Assessment (LCA), users should take into account that the estimated methane emission coefficients are specifically tailored for open-pit coal mines with low gas content and no gas disasters. The coefficient is set at half the rate of methane emissions from low gas mines in state-owned key coal mines. Adjustments may be needed for mines with different gas emission profiles. Output flow is primarily methane (CH4).
Technical purpose of product or process This data set describes the process of open-pit coal mining operations in 1994 based on statistics from the China Coal Industry Yearbook. The coal produced from this process is typically used for energy generation, metallurgical processes, or as a raw material for chemical production. Due to the mining characteristics, it is considered to have no gas disasters or significant methane emissions.
Classification
Class name : Hierarchy level
  • ILCD: Unit processes / Energy carriers and technologies / Energetic raw materials
General comment on data set There is no gas disaster and no measured data of methane emission in open-pit coal mine. The mining depth of this kind of coal mine is small, and the gas content of coal seam is also low.
Copyright No
Owner of data set
Quantitative reference
Reference flow(s)
Technological representativeness
Technology description including background system There is no gas disaster in open-pit coal mine. When estimating the methane emission coefficient, it is taken as half of the methane emission coefficient of low gas mine in state-owned key coal mine.
Flow diagram(s) or picture(s)
  • DFdkbOHeyoVB8gxkBTVcWvTenVg.png Image
LCI method and allocation
Type of data set Unit process, black box
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
Deviation from data selection and combination principles / explanations None
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) 2024-03-29T19:45:38+08:00
Publication and ownership
UUID 469fdbba-725e-4e40-a500-db49d661a527
Date of last revision 2024-04-20T14:31:05.273103+08:00
Data set version 00.01.005
Permanent data set URI https://lcadata.tiangong.world/showProcess.xhtml?uuid=469fdbba-725e-4e40-a500-db49d661a527&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
Product flow
Energy carriers and technologies / Hard coal based fuels 3.081E10 kg3.081E10 kg
General comment The literature does not explain the amount of coal input. Assume : the amount of coal input : output = 1 : 1.

Outputs

Type of flow Classification Flow Location Mean amount Resulting amount Minimum amount Maximum amount
Product flow
Energy carriers and technologies / Hard coal based fuels 3.081E10 kg3.081E10 kg
General comment According to the ' China Coal Industry Yearbook ', the open-pit coal output was 30.81 Mt ( 1994 ).
Elementary flow
Emissions / Emissions to air / Emissions to air, unspecified 4.9E7 kg4.9E7 kg
General comment Methane emissions from open-pit coal mining in 1994 (results from a methane emission factor of 1.59 m3/t *30.81Mt ) ; the original text does not distinguish the flow of bio and fossil, which is judged by experts to be fossil.