Adsorption desulfurization agent for desulfurizing petroleum fraction and desulfurization method using the same
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United States of America Patent
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Issued Date -
Aug 11, 2005
app pub date -
Nov 19, 2004
filing date -
May 22, 2002
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Abandoned
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Abstract
A desulfurization method for a gas oil which includes a step of removing sulfur compounds contained in a gas oil distillate product by the adsorption with an adsorptive desulfurization agent formed of a fibrous active carbon and provided in an adsorption tower (1), and a desorption regeneration step of washing the used adsorptive desulfurization agent with an aromatic solvent to regenerate the desulfurization agent. The method allows the production of gas oil being satisfactorily freed of sulfur content at relatively low equipment and operation costs over a long period of time, and in the method, difficult-to-remove sulfur compounds, such as 4,6-DMDBT, and polycyclic aromatic compounds having two or more rings are selectively removed.
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