Liquefied petroleum gas refers to light hydrocarbons in refinery gas and natural gas, which are gaseous at normal temperature and pressure and can be condensed into liquid under pressurized cooling conditions. Its main components are propane and butane, which are chemical products and belong to secondary energy.
The saturated vapor pressure in civil liquefied gas cylinders is generally 0.0686-0.784MPa, and the gas is led out, depressurized to 2800±500 pa by a pressure reducing valve, and then enters the gas appliance for combustion. LPG single bottle supply is a natural gasification system. Natural gasification depends on the heat of the gas cylinder itself and absorbs the heat of the surrounding medium.
Therefore, the gas cylinder should not be close to the heat source, generally more than 0.5m away from the gas appliance, and should have good ventilation conditions. Liquefied petroleum gas is heavier than air, so it often accumulates on the ground after leakage, and the explosion limit of liquefied petroleum gas is 2%- 10%.
Liquefied petroleum gas has the characteristics of high unit calorific value, convenient transportation and convenient use. In China, it is often used as a supplement to pipeline gas, in rural areas, mountainous areas and other places where pipeline gas can not reach. However, under the condition of convenient use of liquefied petroleum gas, we can't ignore its inherent danger.
How do we know about the leakage of liquefied petroleum gas?
1. odor-household liquefied petroleum gas is mixed with odorant, which will smell when it leaks.
2. Vision-The leakage of liquefied petroleum gas will lead to the formation of foggy white smoke in the air.
3. Hearing-there will be a "hissing" sound.
4. Touch-When the hand is close to the leaking hole, it will feel cool.
What should I do when liquefied petroleum gas leaks?
1. Turn off the LPG switch immediately.
2. Never turn on or off any electrical switch.
3. Gently open all doors and windows and quickly escape from the outdoor.
4. Alarm processing.
Can liquefied petroleum gas kill people?
1. Liquefied petroleum gas itself is not toxic, but it has anesthetic and asphyxiating effects, which reduces the biological reaction ability.
2. Improper use of liquefied petroleum gas will produce a large amount of carbon monoxide, which is easy to combine with heme in blood, leading to hypoxia (carbon monoxide poisoning, leading to death).