Method for transportation of low molecular weight hydrocarbons

A method for transporting first hydrocarbon gases including c1 and c2 hydrocarbons in transport vehicles comprising the steps of:

• mixing said first hydrocarbon gases with second hydrocarbon gases and liquids in the transport vehicle at a shipping point, the second hydrocarbon gases and liquids including hydrocarbons c2 through c7, in order to achieve a partial density of said first hydrocarbon gases higher than a density of said first hydrocarbon gases alone at a given transport temperature and pressure;
• moving the transport vehicle to a delivery point;
• and
• discharging the mixture of said first hydrocarbon gases and said second hydrocarbon gases and liquids at the delivery point.

A method for transporting first hydrocarbon gases in transport vehicles comprising the steps of:

• receiving said first hydrocarbon gases at a shipping point;
• mixing a second hydrocarbon substance in the transport vehicle with said first hydrocarbon gases in order to achieve a partial density of said first hydrocarbon gases higher than a density of said first hydrocarbon gases alone at a given transport temperature and pressure, the second hydrocarbon substance including one of second hydrocarbon gases, second hydrocarbon liquids and a mixture of second hydrocarbon gases and second hydrocarbon liquids;
• moving the transport vehicle to a delivery point;
• and
• discharging said first hydrocarbon gases at the delivery point.

A gas transport system for transport of first hydrocarbon gases comprising a vehicle, the vehicle including:

• means for receiving and discharging the first hydrocarbon gases;
• one or more pressure vessels coupled to the means for receiving and discharging, the pressure vessels being capable of withstanding pressure in a range of 5 to 25 MPa;
• and
• a store of second hydrocarbon substances contained in the pressure vessels, the second hydrocarbon substances having a molecular weight greater than a molecular weight of the first hydrocarbon gases, the second hydrocarbon substances including one of second hydrocarbon gases, second hydrocarbon liquids and a combination of second hydrocarbon gases and second hydrocarbon liquids;
• wherein a gas and liquid mixture of the first hydrocarbon gases with the second hydrocarbon substances in the one or more pressure vessels has a lower compressibility factor than a compressibility factor of the first hydrocarbon gases alone.