Di methylether (DME ) is a non toxic gas a normal conditions but liquefy at about 6 bars and has similar properties as LPG. It has many applications such as propellant, power generation, fuel for heating and cooking or as transportation fuel.
DME can be produced from natural gas, coal or biomass. DME has potential as and ideal fuel for the highly efficient diesel process and for ultra low exhaust emission and reduced noise levels.
Investigations have shown that DME produced via biomass gasification and catalytic synthesis has very high well to wheel energy efficiency and thus result in very high yields of transport work per hectare and year.
The California Department of Food and Agriculture has approved specifications for dimethyl ether (DME) used as fuel in compression ignition engines. (The Department of Food and Agriculture Division of Measurement Standards has the responsibility for establishing and enforcing the quality standards for spark- and compression-ignition engine fuels sold in California. These include gasoline, diesel fuel, and other fuels such as biodiesel and hydrogen.)
This latest approval builds on earlier approvals and ongoing work by other regulatory bodies, including the US Environmental Protection Agency, the California Air Resources Board, and ASTM International, and will help accelerate commercial adoption of this low carbon fuel, commented Oberon Fuels, a California-based company that is the first to produce fuel-grade DME in North America.
Oberon Fuels Inc., the first company to announce plans to commercialize biogas-based dimethyl ether (DME) fuel production in North America (earlier post), announced that the US Environmental Protection Agency (EPA) has approved Oberon’s biogas-based DME for inclusion under the Renewable Fuel Standard (RFS).
Oberon’s biogas-based DME is now eligible for high-value D3 (cellulosic) and D5 (advanced) renewable identification numbers (RINs) under the RFS. (Earlier post.) The EPA determined that biogas-based DME produced from the Oberon process resulted in an approximate 68% reduction in greenhouse gases when compared to baseline diesel fuel.