PROPYLENE THE RIGHT FUEL GAS
FUEL GAS COMPARISON GOOD METHYL- PROPYLENE ACETYLENE ACETYLENE PROPANE REFINERY BLENDS GRADE COMBUSTION PROPYLENE 50-70% Flame Temp. in Oxygen ºF 5295 5589 5301 4579 PROPANE 30-50% ETHANE Flame Velocity in Oxygen, st/sec 15.0 22.7 15.4 12.2
Heating Value/Primary Flame 438 507 517 295
Seconday Flame 1962 963 1889 2268 BETTER TOTAL 2400 1470 2406 2563 CHEMICAL
PHYSICAL GRADE PROPYLENE 90-95% Dissolved Liquid Density at 70º F, lbs./gal. 4.27 4.71 4.14 Gas PROPANE 5-10% ETHANE Gas Specific Vol at 71º F, ft. 3/lb. 9.03 14.7 9.03 8.61
Vapor Pressure
at 70º F, psig 137 Dissolved 94 120 BEST at 0º F, psig 34 Gas 18 28 POLYMER SAFETY GRADE Explosive Limits in Air, % 2.0 - 11.1 2.4 - 80 3.4 - 10.8 2.3 - 9.5 PROPYLENE (MIN.) 99.5% PROPANE (LESS THAN) .5% Relatively Shock Sensitivity Stable Unstable Stable Stable ETHANE
Tendency to Backfire Slight Extreme Moderate Slight Toxicity Low Low Low Low Maximum Allowable Use Cylinder 15 Cylinder Cylinder Pressure, psig Reacts with Reacts with Few Few Reaction with Common Materials copper & copper & Restrictions Restrictions sliver alloys sliver alloys
EACH CYLINDER OF PROPYLENE HAS MORE PRODUCT THAN A CYLINDER OF ACETYLENE.
A SINGLE 100LB PROPYLENE 100 60 25 CYLINDER IS EQUIVALENT TO FIVE, ACETYLENE CYLINDERS. 100 60 25 This can significantly decrease both product PROPYLENE CONTAIN MORE POUNDS and delivery costs as well as increase CYLINDERS OF USABLE FUEL GAS productivity because less time is spent changing out cylinders. PROPYLENE THE PREFERRED FUEL GAS
WHY FABRICATORS, CONTRACTORS AND PLUMBERS ARE CHANGING TO PROPYLENE? PROPYLENE, LIKE ACETYLENE, IS SAFER REDUCED CHANCE OF FLASHBACKS, A SINGLE COMPONENT GAS MORE STABLE
IT IS THE SAME FROM TOP TO 40% REDUCTION BOTTOM OF THE CYLINDERS IN COST OVER ACETYLENE FROM DELIVERY TO DELIVERY IT DOES NOT STRATIFY OR DISTILL 50% REDUCTION IN GAS PRESSURE VS. PROPANE (LESS GAS) NO ADDITIVES TO FOUL UP HOSES AND TORCHES IT IS CONSISTENT 75% LESS CYLINDER CHANGE OUTS (1 - 63LB VS. 300 CU FT / ACETYLENE)
QUALITY CUTS LESS GRINDING, BETTER JOINT FIT-UP METHYL ACETYLENE BLENDS
MIXTURES OF FOUR MAJOR AND MINOR COMPONENTS HIGHER VAPOR PRESSURE IN COLDER TEMPERATURE PRODUCE MIXED, FUZZY FLAMES HARD TO ADJUST FASTER CUTTING SPEEDS PRODUCTIVITY IMPROVEMENT MIXTURE CHANGES AS CYLINDER EMPTIES
LONGER TIP LIFE LESS CHANGE OUT TIME EQUIPMENT
HIGHER BTU RATES UNIFORM HEAT TRANSFER FOR USE EXISTING REGULATOR & TORCHES HEATING AND BRAZING REPLACE CUTTING TIPS USE T-GRADE HOSE
PROPYLENE ACETYLENE PROPANE NATURAL GAS You only need to switch out O ers high heat Cutting speed Cutting speed The most expensive the gas and cutting tips to in both primary and su ers on thick is limited due to the production uel, due begin using propylene for secondary flames material due to its lack o heat in the to poor heat content your cutting project as long as making it the ideal weak scondary flame primary flame throughout all you’re already using a T-grade cutting uel or both aspects of the flame hose. thin & thick material FLAME Any fuel gas other than TEMPERATURE 5312 5589 4586 4460 O acetylene requires the use of F IN OXYGEN a T-grade hose.
PRIMARY FLAME HEAT 433 507 255 11 LONGER LASTING CUTTING TIPS BTU S
SECONDARY Cutting tip consumables last longer when using propylene. This is due to the FLAME HEAT BTU S 1938 963 2243 989 increased tip-to-work distance: tip is not exposed to such high temperatures or effects from the work surface. Propylene cutting does not produce soot due to the chemistry of the gas that makes it a cleaner burning fuel. Heat created by the Heat created by the primary flame secondary flame
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