低压Haber-Bosch工艺生产绿色氨的技术经济及生命周期温室气体评价

IF 8 Q1 ENERGY & FUELS
Guohui Song , Yumeng Chen , Yingfeng He , Qize Jia , Qingjiao Wu , Xiaobo Cui , Hao Zhao
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引用次数: 0

摘要

绿色氨可以作为一种能量储存载体和可持续化学品。为提高绿色氨的竞争力,基于技术、经济和环境性能,设计并优化了低压(LP)和超低压(ULP) Haber-Bosch (HB)技术相结合的两种动力制氨(PtA)工艺。研究了多个变量的影响。LP技术优于ULP技术,因为后者具有更复杂的配置和稍高的平准化成本。不含液氨冷能的系统能效比达到68.71%,不含液氨冷能的系统能效比达到73.75%。绿色氨的单位电耗低至7.64 kWh/kg。厂房规模不应大于10t /h。按照储能电价(0.041€/kWh)计算,要实现盈利,等效运行小时数应超过5000 h。中国情景下风电绿氨全生命周期温室气体排放量为257 ~ 316kgco2e /t。从吹扫气中回收NH3的全生命周期氨排放量为0.06 kgNH3/t。该研究表明,PtA技术可以有效地储存冷能利用的间歇性电力,有效地使氨工业脱碳。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Techno-economic and life cycle greenhouse gas assessment of green ammonia produced by low-pressure Haber-Bosch process
Green ammonia can be used as an energy storage carrier and a sustainable chemical. To improve the competitiveness of green ammonia, two power-to-ammonia (PtA) processes integrated with low-pressure (LP) and ultra-low-pressure (ULP) Haber-Bosch (HB) techniques were designed and optimized based on technical, economic, and environmental performances. The effects of multiple variables were studied. The LP technique is preferred over the ULP technique because the latter has a more complex configuration and a slightly higher levelized cost. The systematic energy efficiency excluding or including the cold energy of liquid ammonia reaches 68.71 % or 73.75 %, respectively. The unit power consumption of green ammonia is as low as 7.64 kWh/kg. The plant scale should not be <10 t/h. Based on the electricity price for energy storage (0.041 €/kWh), the equivalent operating hours should exceed 5000 h to achieve profitability. The life cycle greenhouse gas emission of green ammonia derived from wind power under the Chinese scenario is 257–316 kgCO2e/t. The life cycle ammonia emissions with NH3 recovery from the purge gas is <0.06 kgNH3/t. This study indicates that the PtA technology can efficiently store intermittent electricity with cold energy utilization and effectively decarbonize the ammonia industry.
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来源期刊
Energy nexus
Energy nexus Energy (General), Ecological Modelling, Renewable Energy, Sustainability and the Environment, Water Science and Technology, Agricultural and Biological Sciences (General)
CiteScore
7.70
自引率
0.00%
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审稿时长
109 days
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