Amid concerns over LPG shortages and rising energy import dependence, scientists in India are exploring Dimethyl Ether (DME) as a promising clean alternative to conventional cooking gas. Researchers at the CSIR–National Chemical Laboratory (NCL) in Pune have developed indigenous technology to produce DME, which could reduce reliance on imported LPG and strengthen India’s energy security.
What Is Dimethyl Ether (DME)?
Dimethyl Ether (DME) is a synthetic fuel produced from methanol, which can be derived from sources such as natural gas, coal, biomass, or even captured carbon dioxide. It has physical properties similar to LPG and can be stored as a liquid under pressure, making it suitable for use in existing fuel systems.
Because of these similarities, DME can either replace LPG or be blended with it without requiring major infrastructure changes in cylinders, regulators, or pipelines.
Developed by Scientists in Pune
Researchers at CSIR-NCL have developed a patent-protected technology that converts methanol into DME using a specially designed catalyst. The pilot facility at the lab is currently capable of producing about 250 kg of DME per day, and plans are underway to scale up production.
Scientists are now working with engineering partners to build a demonstration plant capable of producing around 2.5 tonnes per day, which could pave the way for large-scale commercial production in India.
Why DME Is Considered a Better Alternative
DME offers several advantages over conventional LPG and other fossil fuels:
- Cleaner combustion: Produces very low levels of soot, sulphur oxides, nitrogen oxides, and particulate matter.
- Comparable efficiency: Provides thermal efficiency similar to conventional fuels.
- Flexible usage: Can be used in blends with LPG or independently with compatible burners.
In addition, the Bureau of Indian Standards (BIS) allows blending of up to 20% DME with LPG, and up to 8% blending requires no change in existing infrastructure.
Potential Economic Benefits for India
India imports a large portion of its LPG requirements. Researchers estimate that replacing just 8% of LPG consumption with DME could save nearly ₹9,500 crore annually in foreign exchange.
Local production of DME using methanol derived from domestic resources could also help reduce India’s vulnerability to global supply disruptions and geopolitical tensions.
Beyond Cooking Fuel
Apart from cooking gas, DME has several other applications. It can be used as an automotive fuel, aerosol propellant, and industrial chemical feedstock, making it a versatile alternative energy source.
Conclusion
With growing concerns over LPG supply disruptions and import dependence, Dimethyl Ether is emerging as a viable indigenous alternative for India. Developed by scientists in Pune, the technology promises cleaner fuel, lower emissions, and potential economic savings. If scaled up successfully, DME could play an important role in India’s transition toward more secure and sustainable energy sources.
