Roberts (1997) states that elemental sulfur freezes at 119°C at atmospheric pressure, but the freezing point decreases by increasing H2S concentration in the sour-gas. Packing group: III We can help. The herein described method of making a stable solution of sulphur in a mineral oil which comprises dissolving the sulphur in an oil at temperature slightly above the melting point of sulphur, allowing the solution to cool and precipitate sulphur, and adding sulphur so precipitated to mineral oil at a temperature below the melting point of sulphur. Login to view pricing and place your PCCA order. What I claim is: 1. The solvation capacity is weighed with other properties desired of a good process solvent (e.g., gas solubility, low vapor pressure, etc.) PRACTICALLY INSOLUBLE IN WATER; VERY SLIGHTLY SOLUBLE IN ALCOHOL, VERY SOLUBLE IN CARBON DISULFIDE; SLIGHTLY SOLUBLE IN OLIVE OIL. Either a light mineral oil or lard oil can be advantageously used as a sulphur solvent. Caustic washing method is mainly aimed at removing the sulfides from the... Dry gas desulfurization method. Acetone =0.079. These metallic salts are not soluble in mineral oil and immediately begin to precipitate, or in laymen’s terms – to form crystals - onto “substrates”, as … These lubricants usually are mineral oils or a mixture of mineral oils and animal or vegetable oils to which may be-added various ingredients for increasing film strength and the heat absorbing capacity of the lubricant. PG:III. 5 3. This invention relates to a method of producing a soluble sulphur and more particularly to a method of producing stable solutions of sulphur in mineral and other oils. Prevention of sulfur deposition in the production equipment requires the application of a sulfur solvent. Another disadvantage is that the stain made by the lubricant on the metal is difficult to remove. International Water & Terms of Use. Lubricants employed in metal working operations such as drawing and cutting should have very high film strength and high heat... 516/37, 516/926, Click for automatic bibliography Solubility of elemental sulfur (orthorhombic S 8) at 25°C in organic solvents (data in mass-%): Ethanol = 0.066. The method heretofore commonly employed has been to add to mineral oil a sulphurized fatty oil which is produced by heating a mixture of sulphur and oil for a considerable length of time to a temperature of about 450* F. Lubricating compositions so made are of very dark color, almost black, and a considerable portion of the sulphur is chemically combined with the oil. Proper Shipping Name: Sulfur The amount of total sulfur in a crude oil depends on the type of oil field and it varies from 0.05% to 14%. Lubricants employed in metal working operations such as drawing and cutting should have very high film strength and high heat capacity. <=0.5 % max. The solvent used may be a mineral, vegetable or fatty oil or any other solvent from which a substantial proportion of the sulphur will precipitate upon cooling. If the solvent is undesirable in the lubricating composition, the sulphur can be filtered out and washed prior to its addition to the lubricating oil. The injection of sulfate-containing seawater into an oil reservoir, for maintaining the reservoir pressure, can promote the growth of sulfate reducing bacteria and archaea near the injection wells, leading to the formation of sulfides such as hydrogen sulfide. Domestic & Canada: The solution is then allowed to cool and sulphur is precipitated in the form of very fine needlelike crystals. Privacy Policy @article{osti_5789687, title = {Application of alkylnaphthalene absorption oil as a sulfur solvent in sour-gas wells}, author = {Wilken, G}, abstractNote = {This paper reports on elemental sulfur which is soluble in sour gas and often precipitates in sour-gas wells during production. The liquid solvent is heated to a temperature of from 250" to 260* F. and sulphur, either rock sulphur or flowers of sulphur is stirred into the liquid until a substantially saturated solution is obtained. ’ S highest quality chemicals, devices, equipment and more from the... Dry gas method...... Dry gas desulfurization method ; SLIGHTLY SOLUBLE in ALCOHOL, very SOLUBLE in ALCOHOL, very SOLUBLE in oil! Sulphur solvent of mineral oil does not injuriously affect the lubricating properties of the liquid also! Formula S8: 9 ( Misc sulphur solvent conditions, sulfur values as low as 0.2 are. 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