Abstract. Oxidative desulfurization, in which the aromatic sulfur containing compounds are oxidized to their analogical sulfones and subsequently extracted, has assured to be one of the exceedingly effective desulfurization processes for resulting ultra-low sulfur import fuels.
What is desulfurization of fuel?
Desulfurization is the removal of sulfur or sulfur compounds (as from coal or flue gas), mostly from fuels. The most commonly required desulfurization process is in natural gas, but it is also required for flue gas, coal and oil.
Which is used for removing sulphur from petroleum products?
Hydrodesulfurization (HDS) is the current industrial method to remove aliphatic and acyclic sulfur-containing compounds from diesel oil.
Why is sulphur removed from fuel?
The automobile manufacturers demand removal of sulfur containing compounds out of petroleum in order to reduce overall emissions from vehicles. This is because sulfur compounds poison the catalytic converters that reduce particulates and NOx emissions.
Why is desulphurization important?
These processes are of great industrial and environmental importance as they provide the bulk of sulfur used in industry (Claus process and Contact process), sulfur-free compounds that could otherwise not be used in a great number of catalytic processes, and also reduce the release of harmful sulfur compounds into the …
What is hydrodesulfurization process?
Hydrodesulfurization (HDS) is the process that organosulfur compounds are removed over heterogenous catalysts during the refinement of petroleum. Failure to remove sulfur during this process results in the formation of noxious sulfur oxides, which are a major cause of air pollution, upon fuel combustion.
What is desulfurization of natural gas?
One of the most common problems in the gas industry is the removal and disposal of H2S also known as natural gas desulfurization or sweetening of sour gas. Biological oxidation offers a safe, energy efficient, and cost-effective method for natural gas desulfurization.
Why is desulfurization important?
How do you remove sulphur from oil?
The removal of organosulfur compounds from crude oil is an important aspect of all countries to reduce air pollution. The sulfur compounds from gasoline are generally removed by treating it with an alkaline solution sodium plumbite.
How is sulphur extracted from petroleum refineries?
Refineries separate crude oil by boiling point, which is related to density. Decades ago oil refineries adopted a process called hydrodesulfurization (HDS) to strip sulfur atoms from oil molecules. Sulfurous fractions are mixed with hydrogen and a cobalt-molybdenum catalyst, yielding hydrogen sulfide.
What is HDS in refinery?
Hydrodesulfurization (HDS) is a catalytic chemical process widely used to remove sulfur (S) from natural gas and from refined petroleum products, such as gasoline or petrol, jet fuel, kerosene, diesel fuel, and fuel oils.
What do refineries do with sulfur?
Most of the sulfur produced by refineries is sold into the petrochemicals market where it is used to make sulfuric acid. Processing of high-sulfur natural gas is also a large source of sulfur supply.
