Investigation of water-energy-emission nexus of air pollution control of the coal-fired power industry: A case study of Beijing-Tianjin-Hebei region, China

Investigation of water-energy-emission nexus of air pollution control of the coal-fired power industry: A case study of Beijing-Tianjin-Hebei region, China
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火电行业大气污染治理水-能源-排放关系研究——以京津冀地区为例

DOI:
10.1016/j.enpol.2018.01.035
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发表时间:
2018-04
期刊:
影响因子:
9
通讯作者:
Liu Yi
Liu Yi
中科院分区:
经济学2区
文献类型:
--
作者:
Wang Chunyan;Li Paging;Liu Yi

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燃煤发电是水和能源密集型的,并伴随着高排放。因此,中国对燃煤发电行业出台了严格的排放政策(“超低排放控制”)。本研究探讨了水、能源和排放之间的关系,重点研究了京津冀地区燃煤发电行业的末端治理技术。结果显示,2014年,118家被调查工厂的污染物去除能耗为120万吨煤当量(Mtce)。其中,SO_2、NOx和除尘分别占总能耗的60%、11%和29%。除污用水量占发电总用水量的13%。结果表明,这一政策可以减少SO2,NOx和粉尘排放量分别为89%,90%和88%,而消耗的能源平均减少2%,用水量增加8%作为权衡。与实施这些技术变革相关的建设成本总计可能高达50 - 140亿元。本研究中量化的协同增效和权衡提供了数字信息,可以帮助在考虑水、能源、排放和成本的情况下就最适合的排放控制技术集作出决定。
Coal-fired power generation is water- and energy-intensive and is associated with high emissions. As a result, China has issued a strict emission policy ("ultra-low emission control") for the coal-fired power industry. This study investigated the water, energy and emissions nexus (WEEN), focusing on end-of pipe treatment technologies for the coal-fired power industry in the Beijing-Tianjin-Hebei region. The result revealed that the energy consumption for pollutant removal was 1.2 million tons coal equivalent (Mtce) for the 118 investigated plants in 2014. Of the energy consumed, 60%, 11% and 29% was used for SO2, NOxand dust removal, respectively. Water consumption for pollutant removal was 13% of total water consumption for electricity generation. The result implied that this policy could reduce SO2, NOxand dust emissions by 89%, 90%, and 88%, respectively, while consuming an average of 2% less energy and 8% more water as tradeoffs. Construction cost associated with implementing these technology changes could be as high as 5–14 billion yuan in total. The synergies and tradeoffs quantified in this study provide numerical information that could assist with making decisions on the most suitable technology sets for emission control with consideration of water, energy, emissions and cost.
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