Why does acetylene burn so hot?

Acetylene, for example, burns very hot because of the triple bond between the carbon atoms in it. Other factors increasing flame temperature include using pure oxygen rather than air, having just the right amount of oxygen to ensure complete combustion of the fuel, and low heat radiation to the surroundings.

Does acetylene burn hotter than anything?

With welding, people will often argue that hotter is better. However, does acetylene actually burn hotter? The simple answer to this question is yes. The maximum neutral flame for acetylene in oxygen is about 5720 F, while the temperature for propane is 5112.

What gas burns hotter than acetylene?

Propane has greater stoichiometric oxygen requirements than acetylene. For the maximum flame temperature in oxygen, the ratio of the volume of oxygen to fuel gas are 1,2 to 1 for acetylene and 4.3 to 1 for propane. So, there is far more oxygen being consumed when using Propane.

Why does acetylene burn hotter than propane?

Propane releases only a small proportion of heat in the inner flame cone (less than 10%), so most of the heat in the flame is located in the outer cone. Acetylene releases almost 40% of its heat in the inner flame cone.

How hot is acetylene flame?

The heat is generated by the combustion of acetylene in oxygen, which gives a flame temperature of about 3100 °C. This is lower than the temperature of an electric arc, and also produces a less concentrated heat.

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How hot is oxy acetylene?

The oxyacetylene process produces a high temperature flame, over 3000 degrees C, by the combustion of pure oxygen and acetylene.

Is acetylene more explosive than propane?

The flammability limit of acetylene in the air is 2.5% to 82%, whereas that of propane is 2.1% to 9.5%.

Does acetylene burn clean?

Acetylene burns a little hotter but is considered a “dirty gas” since it splays soot everywhere when lighting it. This can be mitigated by being quick to turn on the oxygen which eliminates the soot. The temperatures are: Maximum neutral flame temperature of acetylene in oxygen is about 5720^oF.

Does acetylene burn without oxygen?

Decomposition is a chemical reaction whereby acetylene breaks down into its constituent elements, carbon and hydrogen. This reaction gives out a great deal of heat, which can cause the gas to effectively ignite without the presence of air or oxygen.

What is hotter MAPP gas or acetylene?

Although acetylene has a higher flame temperature (3160 °C, 5720 °F), MAPP has the advantage that it requires neither dilution nor special container fillers during transport, allowing a greater volume of fuel gas to be transported at the same given weight, and it is much safer in use.

Is acetylene an explosive?

Acetylene is an extremely flammable gas and can form an explosive atmosphere in the presence of air or oxygen.

Can I use propane in place of acetylene?

Propane is the easiest fuel gas alternative to Acetylene to obtain and is normally supplied in cylinders on a Deposit basis, rather than rented (as is usually the case with Acetylene). For most users, Propane works out cheaper, especially for infrequent users of Oxygen + Fuel kits.

How hot is blue fire?

Blue flames usually appear at a temperature between 2,600º F and 3,000º F. Blue flames have more oxygen and get hotter because gases burn hotter than organic materials, such as wood. When natural gas is ignited in a stove burner, the gases quickly burn at a very high temperature, yielding mainly blue flames.

What's the hottest burning substance known to man?

Thermite, a mixture of metal powder and metal oxide, is the hottest burning man-made substance in the world. It burns at temperatures of more than 2,200C, enough to burn through steel or asphalt.

Is there anything hotter than fire?

No. Lava, when being forced from the earth, is between 700 and 1200 Celsius or roughly 1300 to 2200 Fahrenheit. The hottest fire is from an Oxyacetylene torch, also called a cutting torch, that reaches roughly 3000 Celsius or about 5400 Fahrenheit.

What is the black stuff from acetylene?

Carbon black (subtypes are acetylene black, channel black, furnace black, lamp black and thermal black) is a material produced by the incomplete combustion of coal and coal tar, vegetable matter, or petroleum products, including fuel oil, fluid catalytic cracking tar, and ethylene cracking.

Can acetylene tank explode?

Acetylene is highly unstable. High pressure or temperatures can result in decomposition that can result in fire or explosion. Acetylene cylinders must never be transported or stored in a closed vehicle.

Why are acetylene cylinders kept upright?

Acetylene cylinders contain a porous mass and liquid acetone that dissolves the gas. An upright position gives the liquid acetone time to settle back into its correct place in the porous mass. This prevents the release of solvent which can quickly vaporise and lead to problems that affect both safety and quality.

Why is acetylene an excellent fuel?

The hottest and most efficient of all fuel gases, acetylene (C₂H₂) provides high levels of productivity thanks to good localised heating with a minimum of thermal waste. It also requires the least amount of oxygen to ensure complete combustion.

Can you freeze acetylene?

The storage temperature of the acetylene tank significantly affects the cylinder's pressure reading. More often than not, in freezing temperatures you will experience a reduced flow rate, even when the cylinder is completely full.

What happens when you lay an acetylene tank on its side?

Acetylene cylinders must not be placed on their sides, since the acetone and binders will have dislodged. The result may be formation of an acetylene "pocket" that is subject to polymerization and the possibility that liquid acetone will be released into the regulator.

Why is acetylene the only fuel gas used for welding?

Acetylene produces a flame temperature of ~3100 degree Celsius along with oxygen. This high flame temperature makes acetylene a suitable choice for gas welding steel. 2. Welding: When burned in oxygen, acetylene produces a reducing zone, which easily cleans the metal surface.

Can you solder with acetylene?

Because soldering alloys all melt at temperatures much below 427⁰C, to use an oxy- acetylene flame for a soldering operation is not only pointless, but difficult, since that flame is so hot that overheating of the metal is hard to avoid.

Can you weld with oxygen and acetylene?

Oxyacetylene welding, commonly referred to as gas welding, is a process which relies on combustion of oxygen and acetylene. When mixed together in correct proportions within a hand-held torch or blowpipe, a relatively hot flame is produced with a temperature of about 3,200 deg.