Evaluation of synergy in reducing pollution and carbon in the ceramic industry: based on the empirical analysis of dry milling

doi:10.12006/j.issn.1673-1719.2021.179

Abstract

Abstract:

The dry-milling process is an important part of energy conservation and emission reduction technology in ceramic industry. However, it has not been widely applied. This paper evaluates the synergy between pollution reduction and carbon reduction of dry-milling process in the two representative enterprises in the south and the north of China. Through literature research and field research, the emission reductions of air pollutants and CO₂ in dry and wet milling technology were calculated by product coefficient method. Compared with the wet-milling process, the same production of 1 t powder can reduce the CO₂ emission by 51% of the dry milling technology. At the same time, the air pollutants can be significantly reduced, such as PM is reduced by 42%, NO_X is reduced by 45%, and SO₂ is reduced by 42%. The cross elasticity of dry powder collaborative control is positive, which shows that dry milling can realize the synergistic emission reduction of air pollutants and CO₂. Due to the difference in the moisture content of raw materials between the south and the north of China, the energy consumption of dry milling in the north decreased by 51%. The effect of reducing pollution and carbon by dry milling is better in the north with low moisture content of raw materials.

Key words: Dry-milling process, Pollution and carbon reduction, Ceramic industry, Evaluation

WU Yu-Peng, FAN An-Cheng, WU Ren-Hai, FENG Xiang-Zhao, WANG Yun-Qing, XIAO Qi-Mei, ZHONG Bao-Min, LUO Shu-Fen, DENG Jian-Yong, JIANG Song-Hua, ZHANG Zhi-Sheng, ZHANG Yi-Qiang. Evaluation of synergy in reducing pollution and carbon in the ceramic industry: based on the empirical analysis of dry milling[J]. Climate Change Research, 2022, 18(3): 373-380.

Figures/Tables 4

Fig. 1 Basic pollution production process and accounting boundary diagram in milling stage of ceramic industry

Table 1 Emission intensity of air pollutants and carbon dioxide from two milling processes

Table 2 Cross elastic analysis results

Fig. 2 Evaluation of the effects of different milling processes in reducing pollution and carbon

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