A COMPARISON OF FUEL GAS PROPERTIES
|
COMBUSTION PROPERTIES
|
Chem-O-Lene® Fuel Gas
|
ACETYLENE
|
NATURAL GAS
|
PROPANE
|
Propylene
|
|
Flame temperature in oxygen, °F
|
5800°
|
5875
|
4600
|
4579
|
5300
|
|
Total heating value (after vaporization) BTU/lb
|
21,570
|
21,500
|
24,800
|
21,600
|
22,100
|
|
Heating value of gas, BTU/ft³
|
2700
|
1480
|
1050
|
2560
|
2400
|
|
Burning velocity in oxygen, ft/sec
|
14.3
|
22.7
|
15.2
|
12.2
|
15.0
|
|
Formation Reaction
|
Exothermic
|
Endothermic
|
Exothermic
|
Exothermic
|
Endothermic
|
|
Primary Combustion Heating Value
BTU/ft³
|
350
|
505
|
55
|
295
|
438
|
|
Secondary Combustion Heating Value,
BTU/ft³
|
2350
|
975
|
995
|
2265
|
1962
|
|
Combustion
Ratio
|
2.1:1
|
1.5:1
|
2:1
|
4.7:1
|
3.1:1
|
|
SAFETY
|
Chem-O-Lene® Fuel Gas
|
ACETYLENE
|
NATURAL GAS
|
PROPANE
|
Propylene
|
|
Shock sensitivity
|
Stable
|
Unstable
|
Stable
|
Stable
|
Stable
|
|
Explosive limits in Oxygen, %
|
2.5-56
|
3.0-93
|
5.0-59
|
2.4-57
|
2.0-57
|
|
Explosive limits in
air, %
|
2.25-940
|
2.5-80
|
5.3-14
|
2.3-9.5
|
2.0-10.0
|
|
Maximum allowable use pressure
|
Cylinder
|
15 psig
|
Line
|
Cylinder
|
Cylinder
|
|
Tendency to backfire
|
Slight
|
Considerable
|
Slight
|
Slight
|
Slight
|
|
Toxicity
|
Low
|
Low
|
Low
|
Low
|
Low
|
|
Reactions with
common materials
|
Few restrictions
|
Reacts with copper and silver alloys
|
Few restrictions
|
Few restrictions
|
Few restrictions
|
|
PHYSICAL PROPERTIES
|
Chem-O-Lene® Fuel Gas
|
ACETYLENE
|
NATURAL GAS
|
PROPANE
|
Propylene
|
|
Specific Gravity of liquid (60° F)
|
0.514
|
--
|
--
|
0.507
|
0.527
|
|
Pounds per gallon
at 60° F
|
4.26
|
--
|
--
|
4.22
|
4.38
|
|
Cubic Feet per pound of gas at 60° F
|
8.76
|
14.5
|
23.6
|
8.45
|
9.20
|
|
Specific Gravity of gas (air=1) at 60° F
|
1.60
|
0.906
|
0.555
|
1.55
|
1.42
|
|
Vapor pressure at
70° F, psig
|
118
|
--
|
--
|
120
|
135
|
|
Boiling range at 760 mm Hg, °F
|
-46
|
-119
|
-250
|
-44
|
-50
|
|
Latent heat of vaporization
BTU/lb
|
183
|
--
|
--
|
184
|
187
|
|
