[TheForge] allstate oxy-propane torch

[terry l. ridder]

hello;

no the table is correct:
reference for the table are:

twi world centre for materials joining technology
oxyfuel cutting - process and fuel gases
http://www.twi.co.uk/j32k/protected/band_3/jk49.html

the usa affiliate is edison welding institute at www.ewi.org

college chemistry book

every one   carbon  atom needs 2 oxygen atoms to form CO2.
every two hydrogen atoms  need 1 oxygen  atom to form H2O.

propane == C3H8
oxygen  == O2

C3H8(g) + (5)O2(g) == (3)CO2(g) + (4)H20(g)

the above equation is balanced.

acetylene == C2H2
oxygen    == O2

C2H2(g) + (2.5)O2(g) = (2)CO2(g) + H2O(g)

the above equation is balanced.

propylene == C3H6
oxygen    == O2

C3H6(g) + (4.5)O2(g) = (3)CO2(g) + (3)H2O(g)

the above equation is balanced.

On Sun, 15 Aug 2004, James Binnion wrote:

james> Terry your chart is wrong or has a typo.
james> 
james> Acetylene:
james> Theoretical Oxygen Ratio,  by  volume 2.5 : 1
james> Torch Oxygen Ratio, by Volume 1.1 : 1
james> 
james> Propane:
james> Theoretical Oxygen Ratio,  by  volume 5 .0: 1
james> Torch Oxygen Ratio, by Volume  3.5 : 1
james> 
james> Source for Torch Oxygen Ratio, by Volume
james> Oxygen Cutting; Meyer; Green et. al.; Welding Handbook, Vol. 2, 8th 
james> ed., pg. 454,  American Welding Society
james> 

-- 
terry l. ridder ><>