DME

Product Description

Chemical properties:

Easy to burn: a flame that emits light slightly when burning, and is not corrosive itself.

It is not easy to oxidize: it is more stable at room temperature and pressure, but under certain conditions, such as under the action of a catalyst, it can react with oxygen to form formaldehyde.

Can occur carbonylation reaction: reaction with carbon monoxide to produce methyl acetate, acetic anhydride, etc.

Can occur coupling reaction: as an substance, it is easy to occur coupling reaction with itself or its homologues.

Production method:

Methanol dewatering method: DME is produced by dehydration of methanol under the action of catalyst, such as the use of permeable molecular sieve membrane reactor, so that methanol is dehydrated under the catalyst to generate DME.

Synthesis gas method: controlling the proportion of silicon in CuZnAl catalyst system, using carbon monoxide and hydrogen to prepare DME directly; It can also be synthesized from gas in industrial production, the gas is converted into syngas by compression combustion, and then reacts to synthesize methanol under specific conditions after impurity treatment, and then dehydrates methanol to produce DME; The waste gas produced by fermentation of biomass such as corn stalk can also be used to separate syngas and then prepare DME.

Product use

Fuel field:

1. industrial fuel: can be used to obtain clean fuel hydrogen, used in the field of fuel cells, can also replace acetylene gas for cutting and welding, more energy saving and environmental protection.

Civil fuel: It can be used as an alternative energy source of LPG, with stronger heat transfer effect, and can be used after modification of LPG fuel.

Engine fuel: as an auxiliary fuel mixed with diesel, the fuel in the engine can achieve better combustion emission effect and reduce environmental pollution.

2.chemical production: It can be used to produce ethanol, and can be directly oxidized to polymethoxy DME at the appropriate catalytic site.

Aerosol field: as a mixed solvent can make hydrocarbons better compatible, achieve better aerosol effect, can also be used as a separate aerosol, can also be used in daily cosmetics and other aspects.

Refrigerant: It is a refrigerant with great environmental protection potential, and the cooling effect is equivalent to that of existing refrigerants, and it is more energy saving.

Pharmaceutical ejector: can be used as a new ejector material in the field of medicine, has successfully developed a new generation of environmentally friendly surface anesthetic aerosol.

Storage and transportation

Storage: Should be stored in a closed container, stored in a cool, dry and well-ventilated environment, away from direct sunlight, away from heat sources and open flames, and separated from oxidizing materials.

Transportation: Small batch products are packed and transported with steel cylinders, and the quality and filling of steel cylinders should meet the regulations; Large quantities of products are transported by liquefaction tankers. Fireworks, impact, fall and exposure are strictly prohibited during transportation and loading and unloading. Positive pressure should be maintained in packaging and storage containers to prevent air entry.

Safety and health

Safety: It is highly flammable, easy to form explosive peroxides when exposed to air (oxygen), and the explosion limit is 2%-50%.

Health: It is a low-toxic chemical, which is a highly combustible gas at normal temperature and pressure, and is non-corrosive, but inhalation can cause cough and sore throat, which can seriously make people confused and confused, etc. Skin contact is easy to cause frostbite, which can make people's eyes painful and redness.