What is desulphurization process?
What is desulphurization process?
Desulfurization refers to the industrial process of removing sulfur from a mineral resource mixture such as crude oil. It predominantly involves a gas-purification industrial procedure used to remove hydrogen sulfide (H2S) and carbon dioxide (CO2) from a given mineral resource.
What chemical is used in the desulfurization process?
Desulfurization or desulphurisation is a chemical process for the removal of sulfur from a material. This involves either the removal of sulfur from a molecule (e.g. A=S → A:) or the removal of sulfur compounds from a mixture such as oil refinery streams….References.
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What is FGD project?
The flue gas desulfurization (FGD) plant removes sulfur dioxides (SO2) from flue gas produced by boilers, furnaces, and other sources.
Why is desulphurization needed?
About Desulphurization in a Ladle Furnace The principle of desulphurization is to transfer the sulfur dissolved in the liquid steel to a CaO-rich slag phase. The slag must be fully liquid (liquid fraction > 0.9). This is required for kinetic reasons.
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 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.
What is FGD in boiler?
Flue-gas desulfurization (FGD) material is a product of a process typically used for reducing SO2 emissions from the exhaust gas system of a coal-fired boiler. This powdered material is referred to as dry FGD ash, dry FGD material, or lime spray dryer ash.
Why is flue gas desulfurization important?
In many plants it is necessary to remove sulfur from the flue gases after the combustion process to meet environmental requirements. For this reason FGD is widely used to control emissions of sulfur dioxide (SO2) and sulfur trioxide (SO3) from plants burning coals with high sulfur contents.
What are the favorable conditions for desulphurization?
The high temperature and low oxygen potential in hot metal after tapping from the BF provides a favourable condition for hot metal desulphurization. Removal of sulphur from the hot metal is called desulphurization of hot metal.
How does dry desulfurization work?
The equipment’s fundamental principle of dry desulfurization is oxidizing the H2 S to sulfur or sulfur oxides, which can be described as a dry oxidation process. After the concentration of H 2 S is desulfurized to <150 mg/m 3 by wet desulfurization, the precision desulfurization by ferric oxide is carried out to 15 mg/m 3.
How does a desulfurization tower work?
The desulfurization tower is filled with ferric oxide, which has a large volume for the sulfur, and the desulfurizer is efficient. When the concentration of H 2 S at the entrance is <10 mg/m 3, the concentration of H 2 S at the exit can be desulfurized to <1 ppm in seconds.
When did desulfurization start in power plants?
The Chendu power plant in China started up such a flue gas desulfurization unit on a 100 MW scale in 1998. The Pomorzany power plant in Poland also started up a similar sized unit in 2003 and that plant removes both sulfur and nitrogen oxides.
What is desulfurization cost (DC)?
Desulfurization cost (DC) is defined as the cost of sweetening one thousand standard cubic feet (MSCF) natural gas. Aspen Plus process simulations are used to calculate raw material and utility requirements, and equipment sizes for each process.
