气候变化领域集成服务门户(CCPortal): Cleaner production of cleaner fuels: Wind-to-wheel-environmental assessment of CO2-based oxymethylene ether as a drop-in fuel

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DOI	10.1039/c7ee01657c
	Cleaner production of cleaner fuels: Wind-to-wheel-environmental assessment of CO2-based oxymethylene ether as a drop-in fuel
	Deutz S.; Bongartz D.; Heuser B.; Kätelhön A.; Schulze Langenhorst L.; Omari A.; Walters M.; Klankermayer J.; Leitner W.; Mitsos A.; Pischinger S.; Bardow A.
发表日期	2018
ISSN	17545692
起始页码	331
结束页码	343
卷号	11 期号:2
英文摘要	The combustion of fossil fuels within the transportation sector is a key driver of global warming (GW) and leads to harmful emissions of nitrogen oxides (NOx) and particulates (soot). To reduce these negative impacts of the transportation sector, synthetic fuels are currently being developed, which are produced from renewable energy stored via catalytic conversion of hydrogen (H2) and carbon dioxide (CO2). A promising class of synthetic fuels are oxymethylene ethers (OMEs). This study conducts a prospective environmental assessment of an OME-based fuel using Life Cycle Assessment (LCA). We investigate an OME1-diesel-blend (OME1-blend), where OME1 replaces 24 mass% of diesel fuel. Such an OME1-blend could be a first step towards an OME transition. For the production of OME1 from CO2-based methanol, we consider both the established route via condensation with formaldehyde and a novel direct pathway based on catalytic combination with CO2 and hydrogen. To close the carbon loop, CO2 supply via biogas and direct air capture is considered. In a best-case scenario, hydrogen is produced by water electrolysis using electricity from wind power in the European Union as an input. The direct pathway reduces the required process steps from three to two and is shown to allow for an improved utilization of the energy provided by hydrogen: the exergy efficiency is increased from 74% to 86%. For combustion, we conducted experiments in a single cylinder engine to determine the full spectrum of engine-related emissions. The engine data provide the input for simulations of the cumulative raw emissions over the Worldwide Harmonized Light Vehicles Test Procedures (WLTP) cycle for a mid-size passenger vehicle. Our well-to-wheel LCA shows that OME1 has the potential to serve as an almost carbon-neutral blending component: replacing 24 mass% of diesel by OME1 could reduce the GW impact by 22% and the emissions of NOx and soot even by 43% and 75%, respectively. The key to achieving these benefits is the integration of renewable energy in hydrogen production. The cumulative energy demand (CED) over the life cycle is doubled compared to fossil diesel. With sufficient renewable electricity available, OME1-blends may serve as a promising first step towards a more sustainable transportation sector. © 2018 The Royal Society of Chemistry.
英文关键词	Blending; Carbon dioxide; Combustion; Diesel fuels; Engine cylinders; Engines; Ethers; Fossil fuels; Fuels; Global warming; Hydrogen; Hydrogen production; Life cycle; Motor transportation; Nitrogen oxides; Pollution control; Soot; Testing; Wheels; Wind power; Catalytic conversion; Cumulative energy demands; Environmental assessment; Integration of renewable energies; Renewable electricity; Single cylinder engine; Sustainable transportation; Transportation sector; Synthetic fuels; alternative energy; carbon dioxide; catalysis; chemical compound; efficiency measurement; electricity; electrokinesis; engine; environmental assessment; European Union; fossil fuel; global warming; life cycle analysis; nitrogen oxides; soot
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190331
作者单位	Institute of Technical Thermodynamics, RWTH Aachen University, Schinkelstraße 8, Aachen, 52062, Germany; Process Systems Engineering (AVT.SVT), RWTH Aachen University, Forckenbeckstraße 51, Aachen, 52074, Germany; Institute for Combustion Engines, RWTH Aachen University, Forckenbeckstraße 4, Aachen, 52074, Germany; Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 1, Aachen, 52074, Germany; Max-Planck-Institute for Chemical Energy Conversion, Stiftstraße 34-36, Mülheim a.d. Ruhr, 45470, Germany
推荐引用方式 GB/T 7714	Deutz S.,Bongartz D.,Heuser B.,et al. Cleaner production of cleaner fuels: Wind-to-wheel-environmental assessment of CO2-based oxymethylene ether as a drop-in fuel[J],2018,11(2).
APA	Deutz S..,Bongartz D..,Heuser B..,Kätelhön A..,Schulze Langenhorst L..,...&Bardow A..(2018).Cleaner production of cleaner fuels: Wind-to-wheel-environmental assessment of CO2-based oxymethylene ether as a drop-in fuel.Energy & Environmental Science,11(2).
MLA	Deutz S.,et al."Cleaner production of cleaner fuels: Wind-to-wheel-environmental assessment of CO2-based oxymethylene ether as a drop-in fuel".Energy & Environmental Science 11.2(2018).