بایگانی‌های Methane - dawnbreeze

What is Methane?

  • Methane is a colorless, odorless, tasteless, and flammable gas.
  • Methane is the first member of paraffin (fat-saturated) hydrocarbons.
  • Methane is also a major component of natural gas.
  • Methane is soluble in alcohol and ether and slightly soluble in water.
  • Methane is transported as a gas in pressurized cylinders.
  • Liquid methane (the main component of natural gas LNG) is transported in cryogenic containers and trailers.

Available grades:

% 99-% 99.9-% 99.99-% 99.999


Tanks and maintenance:

  • Methane can be charged in any cylinder that can be used for non-liquefied gases.
  • This gas can also be transported in bulk through the pipeline.
  • Methane is transported at sea by ships with cryogenic reservoirs.

Compatible and incompatible materials:

  1. Methane is non-corrosive and can be used in the presence of any ordinary metal.
  2. In the presence of liquid methane, carbon steel, and most steel alloys lose their malleability.
  3. Suitable metals for use with liquid methane are stainless steel 8-18 and austenitized alloys of nickel, chromium, copper, Monel, brass, and aluminum.
Molecular Weight 16.042
steam pressure 3680 K. Pa @ -90 0C
Gas density 0.6784 Kg/m3 @ 15.6 0C and 1 atm
The latent heat of evaporation at the boiling point 509.91 KJ/Kg
Specific heat capacity at the temperature

15.6 0C

in 1 Atm

CP=2.207 KJ/Kg.0C

CV=1.688 KJ/Kg.0C

CP/CV=1.307

Critical temperature -82.1 0C
Critical pressure 4641 K.Pa
Solubility in water 35mg/L vol.(gas)/Vol.(Water) at 170C and 1 atm
Boiling point -161.49 0C
Triple point -182.5 0C
Explosion / ignition range in air  Flammable Gas

Material Compatibility of Methane

 

METALS PLASTICS ELASTOMERS

Brass

CARBON STEEL

StainLess Steel

Alumium

Zinc

CoPPER

Monel

Kel-F

Teflon

Tefzel

Kynar

PVC

Polycarbonate

Viton® Buna-N Neoprene Polyurethane

O

Kalrez

GAS

 

S – Satisfactory for use with the intended gas
C – Conditional. May be incompatible under some circumstances or conditions Contact your Praxair representative for additional information
U – Unsatisfactory for use with the intended gas
I – Insufficient data available to determine compatibility with the intended gas
O – All nonmetalic, even those considered compatible, may be ignitable in oxygen enriched environments or in other oxidizing gases. Successful
use depends upon oxygen purity, pressure, temperature, cleanliness and elimination of ignition mechanisms. Please contact your Praxair
Representative for additional information

Classification of dangerous Products:

Dangerous Products Transport Information:

(For refrigerated liquid)   :UN 1972

IATA IMDG DOT
UN 1971 UN 1971 UN 1971 UN NUMBER
Methane, compressed or Natural gas Methane, compressed or Natural gas Methane, compressed or Natural gas, compressed (with high methane content) UN SHIPPING NAME
2.1 2.1 2.1 TRANSPORT HAZARD CLASS
NO NO NO ENVIRONMENTAL HAZARD

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