露天煤矿碳排放核算及碳中和实现路径:以魏家峁煤矿为例

    Accounting of carbon emission in open-pit coal mines and path for carbon neutrality: taking Weijiamao Coal Mine as an example

    • 摘要: 厘清露天煤矿碳排放特征是实现露天煤矿“双碳”目标的前提和基础。在分析识别露天煤矿碳排放源的基础上,基于煤炭开发碳排放源清单分析方法构建了露天煤矿碳排放核算模型。以魏家峁煤矿为例,分析了不同排放源的碳排放特征,并提出了露天煤矿碳中和实现路径。研究结果表明:露天煤矿碳排放源包括直接碳排放源(能源消耗(以燃油和炸药为主)、逃逸和非受控燃烧)和间接碳排放源(电力消耗和水消耗)两类。2022年,魏家峁煤矿的碳排放总量为112 785.978 t,其中,直接碳排放量为79 874.508 t,间接碳排放量为32 911.470 t。燃油消耗为魏家峁煤矿碳排放的主要贡献者,由其产生的碳排放量占煤矿碳排放总量的47.152%。基于碳排放特征,魏家峁煤矿可采取四大路径实现低碳发展:优化煤矿生产系统和能源利用模式,减少能源消耗带来的碳排放;综合利用矿山智能化和物联网技术,降低不必要的设备损耗和能源消耗;促进传统能源和新能源的耦合利用,降低能源消耗的碳排放系数;通过生态恢复,增强矿区生态系统的固碳增汇效益。研究结果可为露天煤矿碳排放核算和减排策略制定提供参考。

       

      Abstract: Clarifying the carbon emission characteristics of open-pit coal mines is the prerequisite and foundation for realizing the goal of “double carbon”. On the basis of analyzing and identifying the carbon emission sources of open-pit coal mines, the accounting model of carbon emission is constructed based on carbon emission source inventory method. The carbon emission characteristics of different emission sources are analyzed by taking Weijiamao Coal Mine as an example, and paths for carbon neutrality of Weijiamao Coal Mine are proposed. The results show that the carbon emission sources from open-pit coal mines including two categories: the one is direct carbon emission sources, including carbon emission from energy consumption (mainly fuel oil and explosives), fugitive emissions and uncontrolled combustion; the other one is indirect carbon emission sources, mainly form electricity and water consumption. The total carbon emission of Weijiamao Coal Mine in 2022 is 112 785.978 tons. The direct carbon emission is 79 874.508 tons and the indirect carbon emission is 32 911.470 tons. Fuel consumption is the main contributor of carbon emission in Weijiamao Coal Mine, accounting for 47.152% of the total carbon emission. Based on the carbon emission characteristics, Weijiamao Coal Mine can adopt four major paths to achieve low-carbon development: optimizing the production system and energy utilization mode of coal mine to reduce carbon emission from energy consumption; comprehensively utilizing the intelligence and Internet of Things technology of mine to reduce unnecessary equipment loss and energy consumption; promoting the coupled use of traditional energy and new energy to reduce the emission coefficient of energy consumption; restore the ecological environment to enhance the carbon sequestration and sink enhancement benefits of the ecosystems in mining areas. The obtained results can provide a reference for carbon emission accounting and emission reduction strategy development in open-pit coal mines.

       

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