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Propylene

2024/9/26


  Chinese name: 丙烯

  Chemical formula: C3H6
  Structural formula:CH2=CH-CH3


  Acrylic technical indicators

Components/Impurities Propylene/2.5N
Propylene/3.0N
Propylene/4.0N
C3H6 0.995 0.999 0.9999
THC ≤500ppm ≤500ppm ≤10ppm
CO2 ≤5ppm ≤4ppm ≤1ppm
N2 ≤50ppm ≤20ppm ≤5ppm
O2 ≤5ppm ≤2ppm ≤1ppm
H2O ≤5ppm ≤4ppm ≤2ppm


  Acrylic packaging types

Types of steel cylinders
Pressure
Gas volume
Net weight of gas
118L steel cylinder ≈1.5MPa 28m³ 50kg
800L steel cylinder ≈1.5MPa - 330kg
400L steel cylinder ≈1.5MPa - 160kg

  

  1、Basic physical properties

Propylene
English name
propylene
CAS Registry Number
115-07-1
EINECS login number
204-062-1
Relative molecular mass
42.081
 Molar volume (standard state)/L 21.99
Appearance and Characteristics Colorless, odorless, and sweet tasting gas
Dangerous goods transportation number
UN 1077 2.1
Dangerous Goods Number
21018
Customs HS code
29012200
Packing group
O52
Packaging method
Welding steel gas cylinders tank、 tank wagon
Boiling point -47.7
Heat of vaporizationKJ/Kg 438.02
Gas density(kg/m³) 1.914
Liquid density(kg/m³)20℃ 513.9
Critical temperature 91.9
Critical pressure MPa 4.6
Critical density kg/m³ 233
Melting point -191.2
Upper explosive limit(V/V) 0.111
Lower Explosion Limited(V/V) 0.02
Combustion heat(KJ/m³) 81224
Flash point 455
Flash point <66.7
Refrigerant number
R1270


  2、Source of propylene
  Propane catalytic cracking method:This is currently the most commonly used method for producing propylene.By decomposing propane into components such as propylene and propane under the action of a catalyst,and then separating and purifying to obtain propylene products.This method has the advantages of high production efficiency and low cost.
  Coal gasification method:producing propylene through the synthesis gas generated during the gasification process of coal.The advantage of this method is that it utilizes renewable resources for production,but the production cost is relatively high.
  Acetylene method:By reacting acetylene gas with water under the action of a catalyst,propylene is produced.This method has low requirements for raw materials,but high production costs.
  Refinery gas recovery:The refinery gas recovered during the production process of the refinery contains propylene,which can be separated and purified to obtain propylene.
  Ethylene co production:In the production process of ethylene,ethylene and propylene are often co produced,which can be separated to obtain propylene.
  Coal to olefin conversion from methanol:Coal is first converted into methanol,and then further converted into olefins,including propylene.
  Propane dehydrogenation to produce propylene:Propylene is produced through propane dehydrogenation reaction,which is a specialized production process.

  3、Main purpose
  (1) Used for producing acrylonitrile,epichlorohydrin,acetone,etc.Used to produce various important organic chemical raw materials,generate synthetic resins,synthetic rubber,and various fine chemicals.
  (2) The largest amount of propylene is used in the production of polypropylene.In addition,propylene can be used to produce acrylonitrile,isopropanol,phenol and acetone,butanol and octanol,acrylic acid and its esters,as well as epoxy propane and propylene glycol,epoxy chloropropane,and synthetic glycerol.
  (3) The main advantage of using propylene refrigerant as a refrigerant is that it does not damage the ozone layer and has a very small greenhouse effect,making it considered an environmentally friendly refrigerant.

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