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LPG

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Published in: Mechanical
12,379 Views

LPG and its properties

Sandeep K / Kolkata

3 years of teaching experience

Qualification: M.Tech. (Production Engineering)

Teaches: Chemistry, English, Hindi, Physics, Drawing, Mechanical

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  1. LPG AND ITS PROPERTIES red by; SANDEEP KUMAR (Deptt. Of ME)
  2. • LIQUEFIED PETROLEUM GAS BUTANE (C4 HIO)- 60 0/0 PROPANE (C3 H8) - 40 0/0 AIR LPG
  3. • COLOUR . PROPERTIES COLOURLESS BOTH AS A LIQUID AND A VAPOUR DENSITY : Liquid LPG is only HALF THE WEIGHT of WATER AIR LPG as a gas TWICE heavier than AIR LPG
  4. • ODOURLESS • Ethyl mercaptan is added as an odorant AIR LPG
  5. FLASH POINT
  6. BOILING POINT • At atmospheric pressure • PROPANE boils at -40 * C aec • This varies with vapour pressure AIR LPG
  7. LIQUID EXPANSION • LIQUID EXPANSION FOR LPG IS 12 TIMES HIGHER THAN THAT OF WATER AIR LPG
  8. LATENT HEAT OF EVAPOURATION THE LATENT HEAT OF EVAPORATION FOR LPG IS 1/6 THAT OF WATER • PROPANE - 102 CAL/GM. BUTANE -96 CAL/GM. Therefore Liquid LPG requires only a small AIR amount of heat to become gaseous LPG
  9. AIR More Air Less Gas 1.5 0/0 I-JEL More Gas LPG 9.5 0/0
  10. L] QUID -ro • 1 VOLUME OF LIQUID WILL CREATE 250 VOLUMES OF VAPOUR • 1 VOLUME OF LIQUID COULD CREATE UP TO 12500 VOLUMES OF FLAMMABLE MIXTURE (GAS-AIR) AIR LPG
  11. TYPE OF LPG FIRE INCIDENTS • NORMAL FIRE • UVCE AIR LPG
  12. BLEVE • A BOILING LIQUID EXPANDING VAPOUR EXPLOSION •S STARTED BY THE HEATING OF A VESSEL A FLAMMABLE LIQUID BY AN EXTERNAL HEAT
  13. UVCE • AN UNCONFINED VAPOUR CLOUD EXPLOSION •S AN EVENT WHERE A FLAMMABLE FUEL/AIR CLOUD BURNS IN FREE SPACE
  14. FEYZIN REFINERY DISASTER • 4TH JAN. 1966 (DURING WINTER) • THIS INCIDENT OCCURRED IN AN OIL REFINERY, LOCATED AT FEYZIN, NEAR LYONS IN FRANCE THE CAP. PROPANE SPHERE WAS 1200 M3, AND IT WAS AROUND 3/4 FULL AT THE TIME PRIOR TO THE INCIDENT
  15. MEXICO CITY DISASTER THIS WAS OCCURRED ON 19TH NOVEMBER 1984 AT PEMEX PLANT THIS CAUSED DUE THE RELEASE OF LIQUID LPG FROM SUPPLYING LINE SPHERE CONTAINED AROUND 6500 TONES LPG PRIOR TO THE INCIDENT
  16. MEXICO CITY DISASTER THERE WERE TWO LPG BOTTLING PLANTS IN ADJACENT PREMISES • AROUND 900 PEOPLE Loss THEIR LIVES OVER 7000 PEOPLE INJURED ABOUT 39000 PEOPLE WERE AFFECTED
  17. MAXICO CITY DISASTER CAUSED WIDESPREAD DAMAGE BOTH WITHIN AND OUTSIDE

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