Modeling the multiple benefits of electricity savings for emissions reduction on power grid level: A case study of China’s chemical industry
Modeling the multiple benefits of electricity savings for emissions reduction on power grid level: A case study of China’s chemical industry
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DOI：
10.1016/j.apenergy.2018.09.078
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发表时间：
2018-11
期刊：
影响因子：
11.2
通讯作者：
H. Yue;E. Worrell;Wina Crijns-Graus
中科院分区：
文献类型：
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作者：
H. Yue;E. Worrell;Wina Crijns-Graus
工业是用电大户。中国的化学工业（按销售额计算是全球最大的）对中国GDP的贡献率为7%，同时消耗了工业总用电量的11%，并占化学工业排放总量的40%的CO2当量、40%的SO2、59%的NOx和18%的PM排放量。分析中很少考虑跨电网（一个国家内）的温室气体和空气污染物排放的异质性。本文开发了节电供给曲线（区分电网），以评估中国化工行业节电的成本效益和技术潜力。计算每个网格的温室气体（即CO2、CH4和N2O）和空气污染物（即SO2、NOx和PM2.5）排放因子，并用于量化2012-2035年期间化工行业节电技术所实现的减排量。结果表明，通过实施电效率措施可以获得显着的多重效益。六大电网在节电量、温室气体和空气污染物减排方面存在较大差异。总节电潜力的 83% 由北部、西北和中部电网贡献，相当于 2035 年基准电力消耗的 32%。 2035 年，这三个电网将减少 129 吨二氧化碳、33 吨甲烷二氧化碳当量、571 吨氧化亚氮二氧化碳当量、235 吨二氧化硫、275 吨氮氧化物和 52 吨 PM2.5由于节省电力（与基准排放量相比减少 31-33%），可以避免使用电网。决策者在制定节能减排目标时，不能忽视多重效益和电网异质性。
Industry is a large electricity user. China’s chemical industry (globally the largest based on sales) contributes 7% to China’s GDP, while it consumes 11% of the total electricity consumption in industry and is responsible for 40% of total CO2eq, 40% of SO2, 59% of NOxand 18% of PM-emissions of the chemical industry emissions. The heterogeneity of GHG and air pollutant emissions across electricity grids (within a country) is rarely included in analyses. In this paper, electricity conservation supply curves are developed (distinguishing the grids) to estimate the cost-effective and technical potentials of electricity conservation in China’s chemical industry. The emission factors per grid for GHG (i.e. CO2, CH4and N2O) and air pollutants (i.e. SO2, NOxand PM2.5) are calculated and used to quantify the emissions mitigation achieved by electricity saving technologies in the chemical industry for the period 2012–2035. Results show that significant multiple benefits can be obtained by implementing electricity efficiency measures. There are large differences among the six grids in terms electricity savings and emissions abatement of GHG and air pollutants. 83% of the total electricity saving potential is contributed by the North, Northwest and Central grids, equal to 32% of baseline electricity consumption in 2035. In 2035, 129 Mt of CO2, 33 kt CO2eqof CH4, 571 kt CO2eqof N2O, 235 kt of SO2, 275 kt of NOxand 52 kt of PM2.5in these three grids can be avoided as a result of electricity savings (a reduction of 31–33% compared to baseline emissions). When decision-makers set targets for energy saving and emission reduction, the multiple benefits and grid heterogeneity should not be ignored.