Propane

Description : 

Propane, is an organic compound, chemical formula CH3CH2CH3, is a colorless and odorless gas, slightly soluble in water, soluble in ethanol, ether, chemical stability, not easy to chemical reaction, commonly used as refrigerant, internal combustion engine fuel or organic synthesis raw materials.

High-purity propane is mainly used as organic chemical raw materials, chemical solvents, electronic semiconductors and refrigerants.

As a refrigerant, R290 has no damage to the ozone layer and has a very small greenhouse effect. It is an environmentally friendly material. R290 has no restrictions on the installation, use and maintenance of refrigerant equipment. Used in central air conditioners, heat pump air conditioners, household air conditioners and other small refrigeration equipment, replacing HCFC-22.

Molecular weight: 44.10

Critical pressure Mpa: 4.248

Global warming coefficient value/GWP100: 3.3

Purity/Purity%: ≥99.5

Sulfur content/Sulfur(ppm): ≤1.0

Moisture (ppm by weight): ≤10

Acidity/Acidity(ppm by weight as HCL): ≤1.0

VapResidue(% by volume): ≤0.01

Appearance: colorless transparent liquid 

Applications:

The largest use of propane is as liquefied petroleum gas with butane, which is used primarily as fuel. Propane is also an important feedstock for cracking ethylene. In addition, propane is widely used as a refrigerant in oil refining, chemical and natural gas processing operations

① The largest use of propane is to do liquefied petroleum gas with butane, mainly used as fuel. 

② Propane is an important raw material for cracking ethylene. 

③ The technology of catalytic dehydrogenation of propane to propylene has been industrialized. 

The gas-phase nitration of propane produces mixed nitro compounds: 1-nitropropane and 2-nitropropane, nitroethane and nitromethane.           ④Nitropropane is a good solvent for vinyl and epoxy resins. Nitromethane is used as a fuel filler for racing cars. 

⑤Propane can be oxidized to produce propylene oxide, by-products methanol, formaldehyde, acetaldehyde and acetic acid, but the separation is very troublesome and has not been promoted. 

⑥It is widely used as a refrigerant in oil refining, chemical and natural gas processing operations. 

⑦Used as a lubricating oil distillate deasphalting solvent, asphalt insoluble in liquid propane, propane extraction, asphalt as extraction residue is removed, and then from the distillation of the asphalt will evaporate the propane and leave the lubricating oil. 

⑧Dewaxing solvent: almost insoluble in liquefied propane. When liquid propane evaporates, about 418680kJ/kg of evaporation heat can be obtained. Using these two characteristics, the propane is partially evaporated from the lubricating oil propane solution, and the resulting low temperature precipitates the wax in the raw oil and dewaxes by self-cooling method. 

Perchloroethylene and carbon tetrachloride can be obtained by chlorination of propane. 

⑩ A new process for making acrylonitrile from propane has been developed.

Hair preparation

Liquefied petroleum gas is condensed at 0 ~ 5℃ to remove some high boiling point impurities, enter the adsorber, successively remove water, propylene, ethylene, ethane, n-butane, isobutane, n-butene, isobutene and other hydrocarbon impurities in the raw gas, and then enter the condenser to condense propane into a liquid, and separate it from nitrogen, oxygen and other non-condensable gases. The extraction rate of propane can reach more than 80%.

Use

High purity propane is widely used as standard gas, calibration gas, online instrument standard gas, preparation of some special mixtures in chemical industry, metallurgy, electronics, petroleum and other industrial sectors and basic research, air pollution monitoring, aviation, atomic energy and other fields.

Security

Propane is a narcotic gas with mild anesthetic and irritating effects when inhaled. People have only mild dizziness at 10% concentration, no irritation symptoms, and no effect at 1% concentration. Inhalation of higher concentrations of the mixture of propane and butane may cause dizziness, headache, excitement or drowsiness, nausea, vomiting, salivation, mild reduction in blood pressure, slow pulse, decreased nerve reflexes, and in severe cases, anesthesia and loss of consciousness. Propane cannot be stored with oxygen, chlorine, other oxidizing agents or combustible gas cylinders.