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The second Frasch-process mine opened in 1912 in Brazoria County, Texas. The Gulf Coast came to dominate world sulfur production in the early and middle 20th century. [7] However, starting in the 1970s, byproduct sulfur recovery from oil and natural gas lowered the price of sulfur and drove many Frasch-process mines out of business.
In this sense, the European Union has taken steps to decrease the sulfur content in diesel below 10 ppm, [6] while the US has made efforts to restrict the sulfur content in diesel and gasoline to a maximum of 15 ppm. [7] The reduction of sulfur compounds in oil fuels can be achieved by a process named desulfurization. [8]
The heat from the production of syngas is used to produce steam from cooling water which is then used for steam turbine electricity production. The syngas must go through a pre-combustion separation process to remove CO 2 and other impurities to produce a more purified fuel. Three steps are necessary for the separation of impurities: [3]
Piles of sulfur produced in Alberta by the Claus process awaiting shipment at docks in Vancouver, Canada. The Claus process is the most significant gas desulfurizing process, recovering elemental sulfur from gaseous hydrogen sulfide. First patented in 1883 by the chemist Carl Friedrich Claus, the Claus process has become the industry standard.
The STG+ Process. This process follows four principal steps in one continuous integrated loop, comprising four fixed bed reactors in a series in which a syngas is converted to synthetic fuels. The steps for producing high-octane synthetic gasoline are as follows: [1]
The wet sulfuric acid process (WSA process) is a gas desulfurization process. After Danish company Haldor Topsoe introduced this technology in 1987, it has been recognized as a process for recovering sulfur from various process gases in the form of commercial quality sulfuric acid (H 2 SO 4) with the simultaneous production of high-pressure steam.