LPG (liquefied petroleum gas), its volume is considerably reduced when it is liquefied by applying pressure. Thanks to this action, transport, storage and measuring operations can be carried out with ease. For use, the pressure is reduced and is transformed into gas by the heat of the air and the gas is used in this phase.


Description and characteristics of LPG:

LPG (liquefied petroleum gas), is supplied from underground gas deposits, and is obtained during the decomposition and liquefaction under pressure of propane, butane and mixtures of hydrocarbons which consist of these gases emitted by distillation and oil fragmentation. LPG is liquefied by applying pressure. The volume of the LPG is reduced and thus can be easily transported, stored and the measurements carried out easily. LPG stored in the liquid state in pressurized containers, changes to the gas state on transfer to the appliance of use by removing the applied pressure and is used in the gaseous phase. Normally LPG is colorless and odorless but to be easily distinguished by users in the environment of use, it is odorized with ethyl mercaptan.

Illustrative picture of  LPG

Advantages of LPG

Use of LPG

Sector of employment:

There are three sectors of use for LPG: Gas Cylinder, Gas Vehicle and Bulk LPG. Due to its high calorific value and its ease of transport, it meets all the needs of LPG in many fields, industry and residential use. It has the same characteristics as natural gas and gas in the air, due to the heat and energy it emits during combustion. In addition, requiring no maintenance and having exceptional safety features, it comes to the fore and offers great convenience to consumers. LPG, or Liquefied Petroleum Gases, is the name given to the derivatives emitted during the refining of crude oil, gasoline fuels, diesel or the mixture of extracts freely in nature. propane and butane. LPG is a flammable gas which is heavier than air, its mixing ratio in Turkey is 30% propane and 70% butane. LPG is used in our country in industrial companies, in domestic energy, heating and lighting.

The ban imposed on going out in traffic, during excessive air pollution, does not apply to vehicles equipped with LPG. There are no LPG usage taxes in Belgium. The fact, also, of being cheaper than gasoline shows a growing interest in LPG. Furthermore, it is known that the use of LPG in vehicles increases the oil change interval and also provides a cleaner engine due to less carbon deposits.

Refined from natural gas and crude oil, LPG is presented to users in compressed gas and liquid form in steel tanks and deposits.

The constitution of the gas is 70% butane and 30% propane.

Clean and environmentally friendly LPG fuel, does not emit polluting exhaust gases such as carbon monoxide, and does not leave ashes.

When entering combustion as a gas, LPG leaving no carbon and acid deposits, is more cost effective than other fuels.

To detect any leaks, refineries perfume this product with Ethyl mercaptan.

Frequently Asked

Questions about CNG

  • Show answer to the question Type IV tanks safe?

    Type IV tanks safe?

    Inside of CNG Type IV cylinder is made of plastic, so it doesn’t do bomb effect in case of an explosion.Plastic inside shell just bursts and the gas just flies away in a few seconds, because CNG is lighter than air.

    Other CNG cylinders (Type 1-2-3) themselves or insides are metal, so they do bomb effect in case of an explosion, spreads away like shrapnel. This causes life and goods loss.

    There are two important structure as safety factors at natural gas systems.

    • Special design of natural gas systems
    • Physical and chemical features of natural gas

    Using industry and home natural gas is safer than diesel and coal. Because unlike liquid and solid fuels, natural gas is mixed into atmosphere in case of leaking. However liquid fuels have a huge risk of spoiling on ceiling and causing to fire.

    Natural gas cylinders are more resistant to physical and chemical effects than other fuel storages of systems because of composite materials.

    Ratio of evaporation is close to zero, so there is no risk of leakage. Even in case of puncturing of cylinder, natural gas which is lighter gas than air, mixes into air directly without causing any hazzard.

    Natural gas whose ignition heat is 6500C, is safer than benzine whose ignition heat is 3500C. Besides, there is no risk of explosion of natural gas unless ratio of mixage with air is between %5 and %15. Natural gas is the most reliable gas in terms of safety according to other liquid fuels in case of an accident because of its high iginiton heat and low range of burning.

  • Show answer to the question CNG an Alternative Fuel?

    CNG an Alternative Fuel?

    In recent years, CNG is accepted as main fuel, but also it is used as an alternative fuel at passenger vechiles. There are many models of vechiles using CNG. Heavy vechiles like buses and tracks are prefered CNG as main fuel. In recent years, CNG engines reached at high technlogy level.

    Reducing reserves of petrol and increasing price make alternative fuels as main fuel. CNG and hydrogen become first choice as the result of petrol’s price and effect to the environment. Besides CNG, Hydrogen or HCNG(%20 Hydrogen %80 CNG) can be filled by adding equipment at CNG stations.

    After natural gas come out from well with basic cleaning process, transfered through pipeline without effects of air conditions. Filling without storing at CNG stations eases natural gas to spread and establishment of sytem At the same time, simplicity of processing and transport of natural gas causes lower cost than petrol.

    Comparing CNG with Other Fuels
    Advantages of CNG by other fuels:

    • Safety standarts of CNG are higher
    • CNG is more environmental fuel with low emissions.
    • Higher emission than EURO 5 standarts
    • CO2 emission is %25 lower at CNG
    • Security of supply of natural gas in Turkey is high,
    • CNG is heaper than other fuels
    • Octane number is 124 and higher.
    • Emission of particles is close to zero,
    • Being gas state at engines, CNG provies most effective ignition at engines.
    • CNG is the fuel causing least knock at engines,
    • CNG engines are silent and vibration-free
    • The same performance at cold or hot air conditions.

    Service buses in ABD, Califonia use CNG necessarily. Usage of CNG at canal boat has been completed in Holand. In many countries, only vechiles running on CNG are allowed to enter in center of the city. These examples proofs superority of the safety and emissions of CNG

    Periodic maintenence time extends, Wearing out caused by vibration reduces, CNG doesn’t include contaminants, so oil life extends. Addition of these positive values and very important advantage of its cost makes CNG more economic than other fuels.

    Other fuels equals to 1m³ CNG:

    1 m³ CNG

    1 m³ CNG

    1 m³ CNG

    1 m³ Benzin

    Conversition is according to ABD GGE system. The amount of savings can be calculated according to a bus driving in a city.

    Using area of CNG
    CNG can be used in two field areas as a compressing of natural gas:

    • CNG AUTOGAS can be used at vechiles,
    • CNG ENERGY in special ransporting container can be transferred to consumers who use it as natural gas and it cen be consumes by reducing pressure.

    Vechiles using CNG Autogas

    • Automobiles
    • Local and non-city buses
    • Local logistic vechiles and vechile fleets
    • Vechiles like garbage traks and road cleaner
    • Heavy vechiles, military and public service vechiles
    • Boats using in canals and seas, ferryboat, sea taxis
    • Trains, motorcycles, tripators
    • Airplains and all kinds of apron tools
    • Work machines, earth-moving truck fleets, forklifts

    How does CNG use in vechiles?
    Basic equipments at CNG vechiles

    • Suitable engine for CNG
    • CNG cylinders
    • Fuel line and regulators

    CNG cylinders and Technology
    Cylinders that is suitable for being filled CNG are seperated as made of steal and other chemicals. Comparasion between steal and carbon fiber cylinders is below.

    Carbon fiber


    Water Capacity




    Tare Weight




    Full Weight




    CNG Capacity








    Which part of vechiles can be filled with CNG?
    CNG is filled with equipments that compress natural gas at high pressure and fill in cylinders. Natural gas with different pressures coming to pipeline, is increased to He 200 or 250 bar pressure by compression system. CNG is filled to vechiles by dispensers. According to filling velocity and dispensers capacity, for example 300 m³ in 4 minutes, CNG is filled in a bus tank.

    Transport System of CNG Energy
    The most economic way to transport CNG to consumers where natural gas pipelines can not be reached to, is CNG method. Pressure of Natural gas is increased to 200-250 bar by CNG compressor and gas is loaded at special transport vechiles. Widely used CNG energy transporting cantainers are;:

    • CNG Battery: 150 m³ at 200 bar,
    • CNG cylinders trailer: 4500- 5500 m³ CNG is filled to this vechile consisted of steal cylinders and moved by tow track.
    • CNG Cylinder truck: 14,000 m³ CNG is filled to these trailers consisted of 250 bar carbon fiber cylinders and moved by tow truck.
      Different sizes of models of hese ttransporting systems can be made. 200 or 250 bar pressure can be chosen. Different stocking technics can be used at consumer area.

Interested in CNG ?

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