A process and apparatus for sweetening a hydrocarbon stream. The apparatus includes two vessels. In a first extraction vessel, caustic removes mercaptans from the hydrocarbon stream. In a second oxidation vessel, the mercaptans in the rich caustic are converted in disulfides. The lean caustic and disulfides are passed back to the first extraction vessel in which the disulfides are separated into the sweetened hydrocarbon phase. The second vessel may receive a wash oil, such as the sweetened hydrocarbon phase, to remove disulfides from a vented gas stream.

The present technology provides a process that includes heating a first mixture of elemental sulfur and particles comprising an alkali metal sulfide in a liquid hydrocarbon to a temperature of at least 150 C., to provide a sulfur-treated mixture comprising agglomerated particles; and separating the agglomerated particles from the sulfur-treated mixture to provide a desulfurized liquid hydrocarbon and separated solids. This process may be used as part of a suite of processes for desulfurizing liquid hydrocarbons contaminated with organosulfur compounds and other heteroatom-based contaminants. The present technology further provides processes for converting carbon-rich solids (e.g., petroleum coke) into fuels.

The present technology provides a process that includes heating a first mixture of elemental sulfur and particles comprising an alkali metal sulfide in a liquid hydrocarbon to a temperature of at least 150 C., to provide a sulfur-treated mixture comprising agglomerated particles; and separating the agglomerated particles from the sulfur-treated mixture to provide a desulfurized liquid hydrocarbon and separated solids. This process may be used as part of a suite of processes for desulfurizing liquid hydrocarbons contaminated with organosulfur compounds and other heteroatom-based contaminants. The present technology further provides processes for converting carbon-rich solids (e.g., petroleum coke) into fuels.

One exemplary embodiment can be a process for oxidizing one or more thiol compounds from an alkaline stream. The process may include passing a mixed stream having the alkaline stream to a vessel having an oxidation section, a separation section and a vent gas section. Often, the oxidation section includes a body containing one or more packing elements. The process can further include passing an oxidized alkaline stream to the separation section containing a first chamber and a second chamber. Usually, the first chamber contains a coated mesh and packing. The two sections further form a neck contains a packing, a distributor, and a mesh.

The invention involves an integrated process in which a hydrocarbon feedstock is treated with a caustic (alkaline) extraction to remove sulfides, disulfides, and mercaptans. These extracted materials are further treated, and are then used to activate hydrotreating catalysts.

The invention involves an integrated process in which a hydrocarbon feedstock is treated with a caustic (alkaline) extraction to remove sulfides, disulfides, and mercaptans. These extracted materials are further treated, and are then used to activate hydrotreating catalysts.

The invention involves an integrated process in which a hydrocarbon feedstock is treated with a caustic (alkaline) extraction to remove sulfides, disulfides, and mercaptans. These extracted materials are further treated, and are then used to activate hydrotreating catalysts.

The present invention relates to a process of conversion of waste streams of petroleum refinery into industrially useful products.

The present invention relates to a process of conversion of waste streams of petroleum refinery into industrially useful products.

The present invention relates to the field of the extraction of sulphur-containing compounds such as the mercaptans, COS or H.sub.2S from a hydrocarbon-containing cut. This selective extraction is carried out by bringing the hydrocarbon-containing cut in liquid phase into contact with an alkaline solution, for example soda. The process according to the invention is an improved process for the regeneration of the alkaline solution, making it possible to reduce the quantity of alkaline solution required in the regeneration section