What is desulfurization of crude oil?

Desulfurization is the process of removing sulfur from crude oil (or its fractions). It prevents contamination and also improves the efficiency of petroleum. Desulfurization removes elemental sulfur and its compounds from solids, liquids and gases.

What is desulfurization of fuel?

What Does Desulfurization Mean? 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.

What is catalytic desulfurization?

Catalysts for Desulfurization HDS process is one of the ways to remove sulfur compounds inside the hydrocarbon fuels. Molybdenum and tungsten with nickel or cobalt promoters were discovered as HDS catalysts in the 1920s and the 1930s in Germany [40].

What is desulfurization diesel?

Ultra-deep desulfurization reduces the sulfur content in diesel to less than 15 ppm. These adsorbents consist of clusters of catalytic metals, such as Ni, supported on zinc oxide (ZnO) nanowires. The metallic clusters act as a catalyst to remove sulfur from aromatics.

What is oxidative desulfurization?

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.

How is sulphur removed 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.

Where is desulfurization used?

Flue Gas Desulfurization Systems: Scrubbers They are used in coal-and-oil fired combustion units including utility and industrial boilers, municipal and medical waste incinerators, petroleum refineries, cement and lime kilns, metal smelters, and sulphuric acid plants.

What is the importance of desulphurisation?

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 reactor is used for desulfurization?

fixed bed catalytic reactors
Desulfurization reactions take place in fixed bed catalytic reactors (∆R) where a minimum ratio H2/hydrocarbon must be ensured for catalyst maintenance reasons.

Why do we need hydrotreating?

Hydrotreating processes are standard in refineries primarily to remove sulfur from refined petroleum fuels. This helps reduce sulfur dioxide emissions that are formed when the fuels are combusted.

Why is flue gas desulfurization important for the environment?

Flue Gas Desulfurization (FGD) Processes. In many plants it is necessary to remove sulfur from the flue gases after the combustion process to meet environmental requirements.