National Gas has a state of the art Deodorizing Plant in its Rusayl facilities, where it produces Aerosol Propellant, which is an environment friendly alternative to ozone depleting CFC based propellants. Aerosol Propellant is used by manufacturers of Pesticides, Air-fresheners, Perfumes, Cosmetics, Spray Paint and Food grade packaging material.

LPG by itself is a colorless liquid and a colorless and odorless gas in its vapor form. For reasons of safety, a strong odorant is however deliberately added to the LPG before it leaves the refinery, to make it easily detectable in case of any leakage, however small.

However, there are some applications of LPG where the odorisation is a distinct disadvantage and it is necessary for the distinct smell of odorisation to be removed. The main industry where de-odorised LPG, or LPG in its natural odourless form is required is in the aerosol industry, where LPG is considered an ideal ’propellant’.

The use of LPG in the aerosol industry has become widespread after other propellants containing CFC were banned worldwide due to their greenhouse effect. Thus the de-odorisation of LPG for such downstream uses has become crucial for the promotion of LPG use .

The most common odorant added to LPG is Ethyl Mercaptan and the primary requisite of a good de-odorising unit is to effectively remove the ethyl mercaptan from LPG. This is achieved by using the adsorbing property of certain substances which act as “Molecular Sieves“.