Knowledge of safe to use LPG
Knowledge of safe to use LPG
The main components of LPG
LPG is generally called liquefied petroleum gas, mainly composed of: ethylene, ethane, propane, propylene, butane, butylene, etc. Appearance: colorless gas or yellow-brown oily liquid with special smell. To remind people to discover liquefied gas leaks, plants often mixed with a small amount of liquefied gas to the evil smell of mercaptan or sulfide compounds, which is a special odor source.
Precautions when using LPG
LPG is one of the widely used energy urban and rural residents, per kilogram LPG combustion heat value of 11,000 kcal, liquefied petroleum gas accounted for 2.5 kg / cubic meter, per cubic LPG combustion heat value of 25,200 calories, so LPG can be seen in a cube is three times the heat of combustion of natural gas.
Currently LPG bottle filling weight of 13 ± 0.5 kg, the total value of 159,500 kcal heat of combustion, heat of combustion is equivalent to 20 cubic meters of natural gas. Life in general use two kinds of bottled liquefied petroleum gas and liquefied petroleum gas pipelines. To avoid security incidents, should science be used safely bottled gas, and pay attention to the following points:
Note the use of liquefied petroleum gas
First, the gas cylinders must be inspected by the technical supervision departments, not filling untested use. Response to security checks when ventilation cylinders and assist service stations to dynamically cylinder angle valve leak testing.
Second, the gas cylinders away from open flames and high temperatures, non-liquefied petroleum gas and other sources of ignition in the same room to use.
Third, the hose connecting the two ends of the cylinder and the stove must tightening hose clamps, gas stoves put into horizontally from the outside of the cylinder and the stove must not be less than 0.5 meters, hose length should not exceed 2 meters.
Fourth, the gas stove ignition, first of all open angle valve on the cylinder, then lit the stove. After use, turn off the gas stove and gas cylinder angle valve.
Fifth, when the ventilation, handling regulator regulator to carefully check the front of the sealing gasket should be intact, otherwise can not be used when installing the regulator, the regulator should tighten the handwheel and check the angle valve should open the cylinder Interface leaks.
Six bottle of liquid gas cylinders due to decreased pressure is small, do not flame with fire is not busy or hot water heating with gas cylinders. When the pressure is not less than the normal combustion of liquefied gas, to gas cylinder units to deal with the residue, no user will be outdoors or residue down drains, this is very prone to fire accidents.
Seven, should always check the cylinders, stoves and other leaks can be soapy water angle valve, pressure regulator, cooker switches, etc. coated cylinders and hoses checked, if applied at the bubbles emerge, immediately close the cylinder angle valve, supply units to report repair.
Eight, when found indoor gas leak, should be promptly and ventilate, so no fire spread to the direction of nearby flare is strictly prohibited. When cylinders fire, immediately close the valve, moved to the outdoor open space, with a dry powder extinguishing agent, carbon dioxide fire extinguishing agent or cover with wet burlap cover methods such as fire.
Nine, met cylinder and regulator joints etc. cylinders fire or accidentally knocked over while the spread of fire, to seize the fence will immediately cylinders cylinders propped up, then cover with a wet towel rails on the cylinder, close the cylinder Angle, fire Jimie, such as the fire is large, difficult to control, due Letters 119 fire, fire easily and quickly move away surrounding objects.
Cylinder test method
Cylinder Safety Inspection valid identification methods:
First, look at the production date marked with a stamp on the cylinder cover, such as: 1998.07,2004.01,2007.06, etc., if the production date in March 2007 before belonging expired cylinders, you need to test.
Second, look at the inspection date. 1, under the inspection angle valve cylinder above the ring, seal playing with inspection date or effective date; 2, in the lower part of the bottle in the next inspection date is valid or spray paint, such as more than valid or the next inspection date, belonging expired cylinders.
The main ingredient of natural gas
Natural gas is a multicomponent gas mixture, the main ingredient is paraffin, which accounts for the vast majority of methane, while a small amount of ethane, propane and butane, in addition to general also contain hydrogen sulfide, carbon dioxide, nitrogen and water vapor, as well as trace inert gases such as helium and argon. Under standard conditions, the methane to butane gas state, the above liquid pentane.
Precautions when using natural gas
① use of natural gas should be the ignition, the gas after opening, sometimes not lit, to quickly turn off gas stove switch, pause for a moment, to be re-ignition of gas to dissipate.
② Note adjust the size of the flame and the throttle, the combustion flame was blue cones, flame stability.
When people do not use ③ away, so Feitang spill off the flame extinguished or the wind, causing the gas to run.
④ closed after use should pay attention to gas appliance switch, so that people fire off; When no longer required while the valve is closed before the statement. ⑤ hose connection stove, keep a distance of 10 cm above the cooktop, so the fire scorched lead to accidents.
The difference between LPG and natural gas
Natural gas is the nature of all naturally occurring gas, including the atmosphere, hydrosphere, biosphere and lithosphere gases of various natural processes formation. People long universal definition of "natural gas" refers to the natural reserves in the formation of hydrocarbons and non-hydrocarbon gas mixture, mainly in the oil gas, gas gas, coalbed methane, gas and biological mud volcanoes generate gas. Associated gas and natural gas can be divided into two kinds of non-associated gas. With the crude symbiosis, while crude oil and gas is called associated gas recovery; non-associated gas, including natural gas field two kinds of pure gas and condensate, both in gaseous exist in the formation.
LPG in the refined gas oil, kerosene, diesel oil, heavy oil, etc. A process of oil remaining in the exhaust gas, through a procedure to be recycled exhaust oil, pressurized to take measures, it becomes liquid, installed in the pressure vessel, the name of liquefied gas that is resulting. It was in liquid form in the cylinder, once the outflow will vaporize into combustible gases than the original volume is about 250 times, and can easily spread, encountered fire will burn or explode.