SET-UP AND SAFE OPERATING PROCEDURES
3-13
0056-0114
COMBUSTION PROPERTIES
Natural Gas Propane
Neutral flame temperature (°F) 4600 4579
Burning velocity in oxygen (ft. / sec.) 15.2 12.2
Primary flame (BTU / cu. ft.) 55 295
Secondary flame (BTU / cu. ft.) 995 2,268
Total heat (BTU / cu. ft.) 1,050 2,563
Total heating value [after vaporization] (BTU / lb.) 24,800 21,600
Auto ignition temperature (°F) 999 874
VALVE OUTLET AND REGULATOR INLET CONNECTION
Natural Gas By Pipeline
Methane CGA 350
Methane (5500 Max. PSIG) CGA 695
Propane CGA 510
*All values are approximations*
If more detailed specifications are required, contact your fuel gas supplier for the specific properties
of the fuel gas.
3.04 PROPYLENE AND PROPYLENE-BASED FUEL GASES
Propylene, also known by its IUPAC name propene, is an organic compound having the chemical formula
C
3
H
6
. It is the second simplest member of the alkene class of hydrocarbons, ethylene (ethene) being
the simplest. At room temperature and pressure, propylene is a gas. It is colorless, highly flammable,
and has an odor similar to garlic.
Propylene is found in coal gas and can be synthesized by cracking petroleum.
In newer designs, cracking takes place using a very active zeolite-based catalyst in a short-contact
time vertical or upward sloped pipe called the “riser”. Pre-heated feed is sprayed into the base of the
riser via feed nozzles where it contacts extremely hot fluidized catalyst at 1230 to 1400 °F (665 to
760 °C). The hot catalyst vaporizes the feed and catalyzes the cracking reactions that break down the
high molecular weight oil into lighter components, including LPG, gasoline, and diesel. The catalyst-
hydrocarbon mixture flows upward through the riser for just a few seconds and then the mixture is
separated via cyclones. The catalyst-free hydrocarbons are routed to a main fractionator for separation
into fuel gas, LPG, gasoline, light cycle oils used in diesel and jet fuel, and heavy fuel oil.
These gases are industrial fuel gases used for flame cutting, scarfing, heating, flame hardening,
stress relieving, brazing and soldering. They may also be used in certain applications for welding
cast iron and aluminum.
Propylene and Propylene-Based Fuel Gas Cylinders
Available in on-site bulk storage tanks. Also available in portable 30 lb. cylinders, and larger 60-70
lb. and 100-110 lb. cylinders.
Industrial Gases
To Next Page
Loading...
