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Dimethyl ether (DME) as potential environmental friendly fuel
E3S Web of Conferences
In recent years, there has been a growing interest in replacing petroleum fuels with so-called second generation environmental friendly fuels. Compared to traditional petroleum fuels dimethyl ether (DME) could be used as a clean high-efficiency compression ignition fuel with reduced particulate matter (PM), sulfur oxides (SOx), hydrocarbons (HC), carbon monoxide (CO) as well as combustion noise. Compared to some of the other leading alternative fuel candidates i.e., methane, methanol, ethanol, compressed natural gas, DME appears to have the largest potential impact on society including well-to-wheel greenhouse gas emissions, non-petroleum feedstocks, well-to-wheel efficiencies, fuel versatility, infrastructure, availability, economics, and safety and should be considered as the fuel of choice for eliminating the dependency on petroleum. This paper reviews the properties and the DME combustion effects on environmental and they were compared to diesel characteristic as well as the eff...
Dimethyl ether ( DME ) : a clean fuel / energy for the 21 st century and the low carbon society
2016
Dimethyl ether (DME) is the smallest ether, and its chemical formula is CH3OCH3. DME usually exists as gas, but it is easy to liquefy by cooling at -25 C at atmospheric pressure and by pressurizing under 0.5 MPa at room temperature. Therefore, DME is easy to handle like liquefied petroleum gas (LPG). DME will be used as a fuel of substitute of LPG. Cetane number of DME is 55-60, so DME will be used as a diesel fuel. DME does not contain poisonous substances, and it burns with no particulate matters (PM), no sulphur oxides (SOx), and less nitrogen oxides (NOx). Therefore, DME is expected as a clean fuel/energy for the 21st century. DME is able to replace light oil and LPG, and its physical properties are similar to those of LPG. It is possible that DME infrastructures will be settled more rapidly than hydrogen, because existing LPG infrastructures can be used for DME. DME is expected as excellent hydrogen/energy carrier and hydrogen storage. It is expected that fuel cell is one of th...
Analysis on Synthesis, Storage & Combustion characteristics of DME as fuel in CI engines
This article reviews on various methods of production of Di-Methyl Ether (DME) avail in present scenario, its storage difficulties and the reasons for holding DME still under research as an alternative fuel. The demand for the development of alternative clean energy sources has risen with increase in the rate of depletion of oil reserves. DME, an ultraclean alternative fuel with less emission, higher cetane number has attracted the world researchers. DME is produced from a variety of raw materials starting from biomass, coal and natural gas. Despite of its greater compatibility with diesel, it has some undesirable properties that make it uncomfortable to use in present compression ignition (CI) engines. This paper presents a brief review of the possible DME production processes and its combustion characteristics. Keywords: DME, Alternative fuel, ultraclean fuel, combustion properties.
Dimethyl ether (DME) is a colorless gas that is a useful precursor to other organic compounds. It is also currently being studied as a future energy option.1 As an energy option, DME is a clean and economical alternative fuel which can be synthesized from natural gas. The resulting properties of DME are very similar to those of Liquefied Petroleum Gas or LPG. DME can be used as fuel for various applications such as home heating and cooking, transportation, power generation, etc. DME (CH 3OCH 3) synthesized from natural gas contains no sulfur or nitrogen, thus it is not corrosive to any metal and not toxic nor harmful to the human body. This paper aims to demonstrate to the reader that it is technically feasible to convert natural gas to other forms of energy such as Dimethyl Ether, among others. Detailed design and operating conditions of the various processes as well as the economic viability of natural gas to DME synthesis would not be discussed in this paper.