4.7 Article

Analysis of carbon footprint and reduction approach of magnesia production in China

期刊

JOURNAL OF CLEANER PRODUCTION
卷 334, 期 -, 页码 -

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.jclepro.2021.130194

关键词

Carbon footprint; Magnesia production; Carbon emission reduction; Clean energy

资金

  1. National Key R&D Program of China 'Technologies and Integrated Application of Magnesite Waste Utilization for High-Valued Chemicals and Materials' [2020YFC1909303]
  2. Anhui Jianzhu University Science Research Foundation [2020QDZ02]

向作者/读者索取更多资源

This paper quantitatively investigates the carbon reduction capacity in magnesia production using the carbon footprint method. The results show that improvement of production process and equipment, as well as energy source replacement, can significantly reduce the carbon footprint of magnesia.
China shares 13.15% and 69.23% of the global magnesite reserves and production respectively. Magnesia is an important connecting link between magnesite and refractory. It is approximately over 80% of magnesite industry that the carbon emitted from magnesia production is directly caused by carbonate decomposition and fossil fuel combustion. Therefore, the study of carbon footprint in magnesia production is valuable for carbon reduction. However, the researches on carbon reduction in magnesia production are rare. In this paper, the carbon footprint method is employed to quantitatively investigate the carbon reduction capacity in magnesia production under the influence of product structure, production process and equipment, and energy source structure. The results show that, for different magnesia, the carbon footprints are 3.937-4.804 kgCO2-eq/kg of fused magnesia, 2.151-3.064 kgCO2-eq/kg of sinter magnesia and 1.440-2.221 kgCO2-eq/kg of light calcinated magnesia at present, respectively. Moreover, for improvement of production process and equipment, the carbon footprint of flash calcinator is 0.489-1.218 kgCO2-eq/kg lower than that of reverberatory furnace for light calcinated magnesia. Similarly, the application of a high-power electricity arc furnace decreases the carbon footprint by 0.763-3.506 kgCO2-eq/kg of fused magnesia. Furthermore, for energy source replacement, the introduction of nuclear power has a carbon reduction capacity of 0.334-2.058 kgCO2-eq/kg-magnesia compared with coal-fired power. It will be 0.473-3.172 kgCO2-eq/kg-magnesia when hydrogen is employed as fuel compared with natural gas and producer gas. Finally, the combination of nuclear power, hydrogen and the carbon capture system will further pull the carbon footprint down to 0.244-0.767 kgCO2-eq/kg-magnesia.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据