What is desulphurization 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 the purpose of hydrodesulfurization?
Hydrodesulfurization (HDS) or Hydrotreating is a catalytic chemical process widely used to remove sulfur compounds from refined petroleum products such as gasoline or petrol, jet fuel, diesel fuel, and fuel oils.
How do you remove Sulphur from fuel oil?
The current industrial method for removal of sulfur from fuels is hydrodesulfurization (HDS), which is a high temperature, high pressure catalytic process. This makes HDS a very costly option for deep desulfurization.
What is meant by desulphurization?
Definition of desulfurization : the removal of sulfur or sulfur compounds (as from coal or flue gas)
Which chemical compound is used for desulphurization?
One effective desulfurizer is a calcium-silicon alloy containing 30 percent calcium. Metallic calcium desulfurizes by forming the very stable compound calcium sulfide (CaS), and it is alloyed with silicon because pure calcium reacts instantaneously with water and is therefore difficult to handle.
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.
Which catalyst is used in hydrodesulfurization?
Catalysts and mechanisms Although not practical, ruthenium disulfide appears to be the single most active catalyst, but binary combinations of cobalt and molybdenum are also highly active. Aside from the basic cobalt-modified MoS2 catalyst, nickel and tungsten are also used, depending on the nature of the feed.
What chemical removes organic sulphur from crude oil?
Subsequently, sulfur removal from irradiate samples can take place by direct extraction of inorganic sulfur (aliphatic sulfur compounds) and other oxidized sulfur compounds (water-soluble compounds such as thiols, sulfides and disulfides) using different polar solvents (i.e. salt solution, acetonitrile and methanol).
What kind of technology is used to help remove sulfur?
Sulfur removal is typically carried out by using caustic or soda ash as in Eqs (20.1) and (20.2). Desulfurized paste is separated in a filter press and sent to the furnace while sodium sulfate solution goes to the crystallizer.
How do we evaluate desulfurization strategies for heavy oil?
Strategies for heavy oil desulfurization were evaluated by reviewing desulfurization literature and critically assessing the viability of the various methods for heavy oil.
What is the patent for desulfurization of liquid fuels?
(2010) Oxidative processes of desulfurization of liquid fuels. oils with water and transition metal catalysts. Energy Fuels hydrocarbon fraction. Patent US 3,551,328 (Texaco) sulfur removal during catalytic cracking.
What is the difference between alkylation and desulfurization of oil?
desulfurizing the oil. It does not require separation by the separation. However, alkylation takes place competi- to oils that are aromatic rich. Since heavy oils tend to be
Which approach to purification is applicable only to desulfurization?
Some of the approaches that were pro- uids by distillation. The boiling point of heavier organo- tion. Thus, this method is applicable only to desulfurization