Oxymethylenether als potenziell CO2-neutraler Kraftstoff für saubere Dieselmotoren Teil 2: Erfüllung des Nachhaltigkeitsanspruchs

Jacob, Eberhard; Maus, Wolfgang

doi:10.1007/s35146-017-0017-z

Cited by 23 publications

(9 citation statements)

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“…The role of water, which is present in the engine exhaust gas, has been emphasized in synthesis and decomposition many times [12]. Investigations on burning OME and OME blends in slightly modified lean combustion engines have been performed intensively [13][14][15][16]. It was concluded that replacing diesel with OME leads to a strong reduction of particle emissions.…”

Section: Introductionmentioning

confidence: 99%

Light-off Investigation of Oxymethylene Ether (OME) Considering the Presence of the Exhaust Components Heptane, Carbon, and Nitrogen Monoxide

Rümmele

Susdorf

Haider

et al. 2021

Emiss. Control Sci. Technol.

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Synthetic fuels and fuel blends like OMEs can contribute to tank-to-wheel CO2 emission savings. At the same time, it is known that these fuels have a lower exhaust temperature compared to conventional diesel. This effect has major impact on the exhaust after-treatment system, particularly in cold start conditions. This paper investigates the light-off behavior of exhaust gases containing OMEs by temperature-programmed oxidation experiments using a state-of-the-art oxidation catalyst. The main side product of catalytic oxidation of OMEs between 100 °C and the oxidation temperature T50, which was around 160 °C, was shown to be formaldehyde. While alkane oxidation, in this case heptane, was little influenced by OME oxidation, the oxidation temperature T50 of CO increases by more than 10 °C by OME addition. Nitrogen monoxide impeded the oxidation of OME in a similar way to the other components investigated. Due to the amount of FA produced and its toxicity, it could be concluded that it is necessary to heat up exhaust after-treatment systems of OME diesel engines even faster than conventional diesel exhaust after-treatment systems. The relatively high reactivity of OME on oxidation catalyst can be used by active thermal management approaches.

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Section: Introductionmentioning

confidence: 99%

Light-off Investigation of Oxymethylene Ether (OME) Considering the Presence of the Exhaust Components Heptane, Carbon, and Nitrogen Monoxide

Rümmele

Susdorf

Haider

et al. 2021

Emiss. Control Sci. Technol.

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show abstract

Section: Introductionmentioning

confidence: 99%

“…Several alternative fuels exhibit the potential to significantly reduce pollutant formation compared to the conventional fossil fuels in addition to reducing greenhouse gas emissions . Among these, oxymethylene dimethyl ethers (OME n ) have attracted particular attention recently , because of their potential to drastically reduce formation of soot and (through adapted engine calibration) nitrogen oxides (NO x ) in CI engines. , OME n form a homologous series with the general formula CH 3 O(CH 2 O) n CH 3 . The first member, OME 1 , is also known as methylal or dimethoxymethane and has been shown to be an excellent blend component for fossil diesel. , Mixtures of higher OME n , in particular those with n = 3–5, have properties similar to diesel fuel and are considered both as blend components or as neat fuels. , …”

Section: Introductionmentioning

confidence: 99%

Production of Oxymethylene Dimethyl Ethers from Hydrogen and Carbon Dioxide—Part I: Modeling and Analysis for OME₁

Bongartz

Burre

Mitsos

2019

Ind. Eng. Chem. Res.

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Oxymethylene dimethyl ethers (OMEn) are potential compression ignition fuels or blend components that enable drastic reductions in pollutant formation. By combining multiple conversion steps, OMEn can be produced from carbon dioxide (CO2) and hydrogen (H2) and hence from renewable electricity. However, established processes for OMEn production are challenging to model and detailed analyses of OMEn production from H2 and CO2 are not yet available in the open literature. In the first part of our two-part article, state-of-the-art models for the formaldehyde-containing mixtures involved in OMEn production are implemented in AspenPlus and used to analyze a process chain for production of OME1 from H2 and CO2 via methanol and aqueous formaldehyde solution. The exergy efficiency of the process chain is 73%. Tailored processes aiming at improved heat and mass integration as well as novel synthesis routes leading to reduced process complexity or avoiding oxidative intermediate steps hold significant promise for future efficiency improvements.

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“…In addition, OME 3–5 blends may even increase engine efficiency and, thus, improve fuel economy . Nowadays, OME 3–5 are produced industrially in China at a scale of more than 240 000 t/a . Since their production is based on coal and future mobility is supposed to be environmentally friendly, novel production processes need to be based on a renewable feedstock.…”

Section: Introductionmentioning

confidence: 99%

“…Considering these process assumptions along with a low methanol price and low investment cost, OME 3–5 production using their benchmark process chain is found to be competitive with conventional diesel. Jacob and Maus use the results to compare the process developed by Schmitz et al with the coal-based production process in China, a novel route by Schmitz et al, a perspective route using DME and FA, as well as with the production of OME 1 . The coal-based production process and the perspective route was found to be cheaper by 16% and 45%, respectively.…”

Section: Introductionmentioning

confidence: 99%

Production of Oxymethylene Dimethyl Ethers from Hydrogen and Carbon Dioxide—Part II: Modeling and Analysis for OME_3–5

Burre

Bongartz

Mitsos

2019

Ind. Eng. Chem. Res.

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Oxymethylene dimethyl ethers (OME n ) have high potential as diesel fuels or blending components due to their promising combustion properties and can be produced from hydrogen (H2) and carbon dioxide (CO2) by combining existing process concepts. However, such a process chain has not been analyzed in detail yet, so its performance and bottlenecks are unknown. In this second part of our two-part article, we analyze a process chain for production of the longer chain variant OME3–5 from renewable H2 and green CO2 via trioxane and OME1. We simulate in Aspen Plus using detailed thermodynamic models with coupled oligomerization reactions and rigorous unit operation models. The overall exergy efficiency of OME3–5 production from H2 and CO2 using established process concepts is 53%. Therein, the trioxane process step has the highest losses due to its high heat demand. Considering a pinch-based heat integration throughout the entire process chain its total heat demand can be reduced by 16%. Thus, the exergy efficiency increases to 54%. This is still significantly lower compared to the production of other alternative fuels like OME1, methane, and dimethyl ether. Thus, more efficient processes, e.g., by avoiding trioxane production, are required.

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Oxymethylenether als potenziell CO2-neutraler Kraftstoff für saubere Dieselmotoren Teil 2: Erfüllung des Nachhaltigkeitsanspruchs

Cited by 23 publications

References 0 publications

Light-off Investigation of Oxymethylene Ether (OME) Considering the Presence of the Exhaust Components Heptane, Carbon, and Nitrogen Monoxide

Light-off Investigation of Oxymethylene Ether (OME) Considering the Presence of the Exhaust Components Heptane, Carbon, and Nitrogen Monoxide

Production of Oxymethylene Dimethyl Ethers from Hydrogen and Carbon Dioxide—Part I: Modeling and Analysis for OME₁

Production of Oxymethylene Dimethyl Ethers from Hydrogen and Carbon Dioxide—Part II: Modeling and Analysis for OME_3–5

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Oxymethylenether als potenziell CO2-neutraler Kraftstoff für saubere Dieselmotoren Teil 2: Erfüllung des Nachhaltigkeitsanspruchs

Cited by 23 publications

References 0 publications

Light-off Investigation of Oxymethylene Ether (OME) Considering the Presence of the Exhaust Components Heptane, Carbon, and Nitrogen Monoxide

Light-off Investigation of Oxymethylene Ether (OME) Considering the Presence of the Exhaust Components Heptane, Carbon, and Nitrogen Monoxide

Production of Oxymethylene Dimethyl Ethers from Hydrogen and Carbon Dioxide—Part I: Modeling and Analysis for OME1

Production of Oxymethylene Dimethyl Ethers from Hydrogen and Carbon Dioxide—Part II: Modeling and Analysis for OME3–5

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Production of Oxymethylene Dimethyl Ethers from Hydrogen and Carbon Dioxide—Part I: Modeling and Analysis for OME₁

Production of Oxymethylene Dimethyl Ethers from Hydrogen and Carbon Dioxide—Part II: Modeling and Analysis for OME_3–5