Main uses of DME
1. Replacement of chlorofluorocarbons as aerosols
As the environmental awareness of countries around the world is increasing, chlorofluorocarbons, which were previously used as aerosols in the aerosol industry, are gradually being replaced by other harmless substances.
2. Used as a refrigerant and foaming agent
Due to the low boiling point, high heat of vaporization, good vaporization effect of DME, and its condensation and evaporation characteristics are close to those of chlorofluorocarbons, DME is very promising as a refrigerant. Domestic and foreign countries are actively developing its application in refrigerators, air conditioners, food preservatives, etc. to replace Freon. DME is used as a foaming agent. Foreign countries have successively developed DME as a foaming agent for polystyrene, polyurethane, and thermoplastic polyester foams. The foamed products have uniform pore size, and their flexibility, pressure resistance, crack resistance and other properties have been enhanced.
3. DME as fuel
DME has a vapor pressure similar to that of liquefied petroleum gas. It becomes liquid at low pressure and gaseous at normal temperature and pressure. It is flammable and has low toxicity. In addition, DME has a high cetane number (about 55). As a substitute for liquefied petroleum gas and diesel in automobile fuel, the conditions are ripe. As it is an excellent clean energy, it has been widely valued at home and abroad. In the next ten years, the application of DME as a fuel will have an immeasurable potential market, and its application prospects are very optimistic. It can be widely used in civilian clean fuels, automobile engine fuels, and alcohol fuels.
Specification Parameters
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Chemical Formula
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C2H6O
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Molecular Weight
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46.07 g/mol
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State
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Gas at normal temperature and pressure
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Density
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Approximately 1.908 kg/m³ (at 21.1°C, 1 atm)
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Melting Point
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-141.5°C
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Boiling Point
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-24.8°C
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Flash Point
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-41.1°C
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Ignition Point
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350°C
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Explosion Limits
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Lower explosion limit in air: 3.4%, Upper explosion limit: 18%
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Octane Number
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High, greater than 55
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Characteristics
· Environmentally Friendly: Combustion produces only carbon dioxide and water, with no sulfur oxides or particulate emissions.
· High Purity: Suitable for use in sensitive applications like aerosol propellants or chemical intermediates.
· Energy Efficient: High calorific value, making it a suitable alternative to traditional fuels.
· Easily Transportable: Can be stored and transported as a liquid under moderate pressure.
Advantages / Selling Points
· Clean Energy: Emits no soot, making it ideal for applications where environmental concerns are paramount.
· Versatile Usage: Compatible with various industrial, automotive, and domestic applications.
· Cost-Effective: An economical alternative to liquefied petroleum gas (LPG) and diesel.
· Safe Storage: Stable under normal conditions, with minimal risk of degradation.
· Reliable Supply: Produced using abundant resources like methanol or natural gas, ensuring consistent availability.
Applications
· Fuel:
o Replacement for LPG in domestic and industrial cooking.
o Alternative diesel fuel for automotive and power generation.
· Aerosol Propellant:
o Widely used in cosmetics, pharmaceuticals, and household sprays.
· Chemical Feedstock:
o Used in the synthesis of dimethyl sulfate, acetic acid, and other intermediates.
· Refrigerant:
o Acts as an efficient cooling agent in refrigeration systems.
· Welding and Cutting:
o Fuel for oxy-DME welding applications.
Technology
The Dimethyl Ether DME project adopts advanced methanol gas-phase catalytic dehydration technology to produce fuel-grade DME with a concentration of more than 99.0%. The fuel-grade DME Dimethyl Ether is further separated through a lightness removal tower (using high-efficiency corrugated rolled perforated plate filler) to obtain refined ethRE with a concentration of 99.9% and high-purity ethRE with a concentration of 99.99%.
Theory
The chemical stability and low molecular weight of DME make it highly reactive for applications in energy and chemical processes. Its combustion reaction is represented as follows:
CH₃OCH₃ + 3O₂ → 2CO₂ + 3H₂O + Energytext{CH₃OCH₃ + 3O₂ → 2CO₂ + 3H₂O + Energy}CH₃OCH₃ + 3O₂ → 2CO₂ + 3H₂O + Energy
Service
· Customized Solutions: Tailored specifications for different industries.
· Logistics Support: Safe and efficient transport of DME worldwide.
· Technical Assistance: On-site and remote troubleshooting for your specific applications.
· 24/7 Customer Support: Dedicated team to address your queries anytime.
Production Process
The production of DME involves:
1. Methanol dehydration under controlled conditions using advanced solid acid catalysts.
2. Purification of the final product to ensure high purity levels (>99.99%).
3. Storage in pressurized tanks for distribution.
Operation Instructions
1. Handling: Always use DME in well-ventilated areas. Avoid inhalation or contact with the skin.
2. Storage: Store in sealed, pressurized containers away from direct sunlight or heat sources.
3. Transport: Ensure compliance with safety regulations when transporting as a liquefied gas.
Precautions
· Avoid exposure to high temperatures to prevent unintentional vaporization.
· Ensure leak-proof containers and proper safety protocols during handling.
· Use flame arrestors in systems handling DME to prevent flashback.
· Wear appropriate protective equipment (gloves, masks) during use.
Product Tags:
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OEM DME Dimethyl Chemical Aerosols Refrigerant Foaming Agent Images
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