remove sulfur from steel - search results


Process for removing sulfur from naphtha - ExxonMobil ...

The invention claimed is: 1. A process for removing sulfur from a sulfur-containing naphtha feed comprising: (1) contacting the feed with a hydrotreating catalyst under hydrotreating conditions such that at least 50 wt. % of olefins in the feed are preserved and at least 95 wt. % of the sulfur compounds in the feed are converted to produce a hydrotreated effluent, (2) contacting the ...

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Calcium Carbide Applications - Carbide Industries LLC

In the integrated steel mill, this practice has now been largely replaced by the use magnesium to remove an initial amount of sulfur in the transfer ladle, and the use of carbide as a steel ladle deoxidizer and slag conditioner to obtain the final sulfur specification.

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US3926575A - Removal of pyritic sulfur from coal - Google ...

Finely divided coal or coal derivatives, containing pyrite, are reacted with sulfurous acid (the oxidizing agent); if desired, HCl may also be used to improve the reaction efficiency to remove pyritic sulfur from coal as shown by the following equations: Primary: Oxidation - reduction 4 FeS2 (pyrite) +3SO2 + 12 HCl -> 4 FeCl3 + 11S + 6 H2O Secondary: Oxidation - reduction 4 FeCl3 + FeS2 ...

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Adsorption Desulfurization Over Modified Y Zeolite

Transition-metal ions are often introduced into NaY zeolites for removing the sulfur compounds from fuels to obtain ultra clean fuels with low energy consumption, easier equipment operation and non-pollution. However, the loaded transition-metal ions were washed away during the adsorptive desulfurization and regeneration of adsorbent.

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Possibility of Sulfur Removal from Ladle Slag by Oxidation ...

steel is the removal of sulfur. The final sulfur removal takes place in the ladle where a synthetic slag with high affinity to sulfur is used. Sulfur is then transferred from the steel to the slag. After the ladle treatment,the slagis discarded. For some steel processes, the main impurity element in the slag after ladle treatment is sulfur.

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Desulfurizing Steel: Magnesium is the Reagent of Choice

In many applications, sulfur content control is critical, since sulfur in the form of iron sulfides (FeS) can lead to structural failure. Steel mills use a variety of materials and technologies to remove sulfur from steel, because structural steel applications demand low sulfur levels in order to achieve the highest quality structural steel ...

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US4509989A - Cleaning method for removing sulfur ...

Process for removing hard to remove deposits containing elemental sulfur and multivalent compounds from a surface comprising (1) contacting the deposits with a cleaning composition comprising (a) a major portion of aliphatic amine, (b) water, and (c) an oxidizing or reducing agent, (2) allowing the cleaning composition to remain in contact with the deposits for sufficient time to allow ...

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Sulphur removal in ironmaking and oxygen steelmaking

the metal phase and the sulphur activity in the slag phase should be as low as possible. Furthermore, it is known that an increased basicity leads to a higher sulphur capacity of the slag, which is good for desulphurisation of the metal. In steel plants the basicity is calculated based on the weight Figure 1. Block scheme of the BF-BOF ...

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REMOVAL OF SULFUR AND PHOSPHOROUS FROM IRON ORE ...

ore concentrate to remove sulfur by leaching technique. Technically, chemicals are used to react with the sulfur bearing minerals in the iron ore to convert them into a soluble fraction, resulting in an easy separation from the insoluble solid phase. Since the amount of the iron ore concentrates, which must be treated, is massive, the process

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Removal sulfur components from heavy crude oil by natural ...

Therefore various metal cations were impregnated at various supports have been used as adsorbents for the desulfurization of liquid fuels, . Al hamed and Bamufleh indicated that desulfurization of model diesel oil using granular activated carbon modified with ZnCl 2 as adsorbent was effective in removing organic sulfur compounds .

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10 Some Methods of Reducing Sulfur Oxides from Power ...

utility industry consumed 352.9 million tons of coal of which only somewhat over 1 percent had a sulfur content 0.5 percent or less, about 12 percent had a sulfur content of 0.6 to 1.0 percent, 56 percent had sulfur content between 1.1 and 3.0 percent, while 31 percent had a sulfur content over 3 percent.

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Sulfur Removal, ZnO Catalyst, Iron Oxide Desulfurizer ...

Metal oxide promoted zeolite are widely used in sulfur removal, especially the mercaptan. CuX type catalyst is Cu promoted zeolite which use 13X molecular sieves as carrier and has been used to remove mercaptan from aviation kerosene. CUX-10, CuO Based Sulfur Adsorbent, Dia.3-5mm, Form: Spheres. It is for the removal of the mercaptan from ...

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Removal of Hydrogen Sulfide and Sulfate | UGA Cooperative ...

The synthetic gel removes as much contaminant as natural greensand, but the synthetic version requires less backwash water and also softens the water while it removes the hydrogen sulfide. If the water pH is below 6.7, increasing the pH to 7.5 to 8.3 will be beneficial for hydrogen sulfide removal.

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Selective adsorption for removing sulfur with oxidatively ...

TiO 2-CeO 2 mixed metal oxides represent an interesting type of oxidatively regenerable adsorbents developed from ongoing work in our laboratory, which show selectivity to adsorption of sulfur compounds in the presence of aromatic and olefinic compounds in liquid fuels. As an example, the adsorption selectivity trend of the selected mixed oxide ...

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Process for removal of sulfur dioxide from gaseous ...

A process is claimed for removing sulfur dioxide from a mixture of gases and recovery of sulfur dioxide. The sulfur dioxide is first contacted in a scrubbing zone with an aqueous solution of a salt, M/sub 2/B, where M is an alkali metal cation, and B is a divalent anion derived from a weak acid which has an ionization constant (Pka) value of at least 3.0.

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Desulfurization of steel [SubsTech]

The most popular method of desulfurization is removal of sulfur from molten steel to the basic reducing slag. Basic slag is a slag containing mainly basic oxides: CaO, MgO, MnO, FeO. A typical basic slag consists of 35-60% CaO + MgO, 10-25% FeO, 15-30% SiO 2, 5-20% MnO. Transition of sulfur from steel to slag may be presented by the chemical equation: [S] + (CaO) = (CaS) + [O] The …

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Best Sulfur Water Filter for Well Water (Find Your Removal ...

It has a decorative and durable stainless-steel tank, can remove sulfur from water in homes with up to 4 bathrooms, and it offers the convenience of being a maintenance-free well water treatment system. Main Features & Benefits. Sulfur Treatment Method: This sulfur lowering system works based on what is known as continuous injection technology.

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Removal of Phosphorous from Steel Produced by Melting ...

However, when using pure metal batch, the reduction in sulfur content in the arc furnace is often sufficient, and subsequent ladle treatment to remove sulfur may be scaled back or even eliminated.

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hot metal desulphurisation process

1 Introduction. Hot metal desulfurization serves as the main unit process for removing sulfur in blast-furnace-based steelmaking. Hot metal desulfurization is commonly conducted in a ladle or a torpedo car, 1 using a desulfurization reagent that is either injected into the metal bath or added on top of it. 2 From the thermodynamic point of view, the fundamental requirement for the ...

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Removing Corrosive Sulfur and Its Compounds From ...

The first is to protect metal surfaces from corrosive sulfur compounds by coating them with special lacquer. This approach does not aim to remove …

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How Does Stainless Steel Neutralize Smells?

The sulfur compounds bind to the steel—efficiently removing the odor from your fingers. So, next time you find your fingers and hands smelling from fish, onions or garlic, don't reach for the scented spray; grab a stainless steel knife. Take care, though, to wipe your hands on the flat side, and your limbs will be scentless in no time.

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equipment - How can I clean solid sulfur and its oxides ...

Chromic acid (sulfuric acid and potassium dichromate) will remove sulfur. Pour the chromic acid into the test tube and let it sit for a couple of days, then pour it out, and with the help of a spatula, you should be able to remove the sulfur as a solid chunk. Carbon disulfide dissolves sulfur, but $ce{CS_2}$ is toxic and extremely flammable

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Method for removing sulfur from fossil fuels - California ...

A process for removal of sulfur from fossil fuels, such as coal, lignite, peat and fuel oil. The process includes the oxidative treatment of the fuel at or about ambient temperature, followed by a wash with a dilute basic aqueous solution of a basic compound of alkali metal or alkaline earth metal at or about ambient temperature.

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6.2. Syngas Contaminant Removal and Conditioning | netl ...

Raw synthesis gas (syngas) from the high temperature gas cooling (HTGC) system needs to be cleaned to remove contaminants including fine particulates, sulfur, ammonia, chlorides, mercury, and other trace heavy metals to meet environmental emission regulations, as well as to protect downstream processes. In the case of carbon sequestration, carbon dioxide (CO2) is also removed.

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Removal of Sulfur From Iron Ore with Physical and Chemical ...

these impurities on steel are ductility, impact resistance, and reduction of the resistance to corrosion. Oxygen and sulfur are also the source of non-metallic particles in steel, known as inclusion. These inclusions should be removed from steel as far as possible since they have dangerous effects on the properties of steel.

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Remove Iron & Sulfur From Your Well Water - Safeway Water ...

One filter that will remove iron, sulfur, and Manganese. Chemical Free! Plumber Mate Iron & Sulfur systems use a chemical-free approach for Iron, Sulfur and Manganese removal when bacteria is not present, and when your well pump can produce sufficient …

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Flue Gas Desulfurization Reducing Acid Rain | Howden

Flue gas desulfurization (FGD) is a set of technologies used to remove sulfur dioxide (SO2) from flue gases produced from industrial combustion at petrol refineries, chemical manufacturing industries, mineral ore processing plants, and power stations to name a few. ... causing paint to peel, corrosion of steel structures such as bridges, and ...

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Sulphur removal in ironmaking and oxygen steelmaking

Scrap 0.094 Steel 0.091 Steel 0.091 Steel 0.057 HM slag 0.036 Balance 0.022 HM 0.028 Total 0.176 0.176 0.096 0.096 Schrama Sulphur removal in ironmaking and oxygen steelmaking 334 Ironmaking and Steelmaking 2017 VOL 44 NO 5. Lime Desulphurisation of metal can be …

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Whole House Water Filter For Iron And Sulfur - obiavata.com

Whole house water filters removing iron, sulfur and manganese iron is the most prolific metal in the earth's crust and therefore one of the most commonly seen contaminants by well owners. The natural element is notorious for making its way into your water from rock formations in the ground or seeps into aquifers after being dissolved in heavy.

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How To Remove Sulfur And Rotten Egg Odor From Water ...

The presence of sulfur in water causes metals such as iron, steel, copper, and brass to become corroded over time quickly. fixtures and appliances manufactured/designed with such metals often suffer a lot, needing repairs, replacement, and maintenance always. Corrosion of iron and steel also causes black water. Sulfur water affects ...

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