Abstract:
During regeneration of a sulfurized sorbent, the amount of sulfur dioxide in the regeneration zone is controlled to minimize sulfation of the sorbent.
Abstract:
A system for producing a mixed gas-oil stream which contains solid particulates wherein gas is to be separated and compressed downhole in a turbine-driven compressor before the gas is injected into a subterranean formation. The stream is passed through an upstream separator to separate out the particulates which pass through a first and second set of slots into first and second passages, both of which empty into a bypass through the turbine whereby the separated particulates do not contact the rotary vanes of the turbine thereby alleviating the erosive effects of the solids in the produced stream.
Abstract:
Deactivation of an isomerization catalyst is inhibited by charging a hydrocarbon feed having a concentration of an organic aluminum halide compound to an isomerization zone operating under isomerization conditions and containing an isomerization catalyst.
Abstract:
A sorbent composition comprising a support and reduced-valence iron can be used to desulfurize a hydrocarbon-containing fluid such as cracked-gasoline or diesel fuel.
Abstract:
A reforming catalyst containing a Group VIII metal, or a Group VII B metal, or tin or germanium, or copper, or selenium or combinations of any two or more metals or oxides thereof is activated by: a) continuously flowing a reducing gas over the catalyst for contact with the catalyst; (b) during step a), flowing a halogen-containing compound over the catalyst for contact with the catalsyt for a first time period, wherein the first time period is greater than about 1 minute, and wherein the first time period is less than about 60 minutes; and (c) following step b), and during step a), substantially discontinuing the flow of the halogen-containing compound over the catalyst for a second time period, wherein the second time period is greater than about 1 minute. Alternatively, the catalyst can be activated in an activation zone by: 1) removing water from the activation zone; 2) reducing iron oxide contained in the activation zone in the presence of a reducing gas thereby forming reduced iron and water; 3) removing water from the activation zone; 4) reducing the metal oxide of the catalyst in the presence of a reducing gas thereby forming reduced metal and water; 5) removing water from the activation zone; 6) during step 4), flowing a halogen-containing compound over the catalyst for contact with the catalyst for a first time period; and 7) following step 6) and during step 4), substancially discontinuing the flow of halogen- containing compound over the catalyst for a second time period.
Abstract:
This invention provides an improved etherification process (20, 30) that reduces the amount of acidic ion-exchange resin catalyst that is deactivated by nitriles. This process uses a water phase to remove nitriles from a hydrocarbon phase followed by an alcohol phase to remove the nitriles from the water phase. A hydrogenation catalyst is used to convert the nitriles to amines so that they can be more easily removed from the alcohol phase. This invention also provides a process to remove nitriles (10, 60). This invention further provides an improved etherification process that reduces the amount of acidic ion-exchange resin catalyst that is deactivated by nitriles. These processes use a water phase to remove nitriles from a hydrocarbon phase followed by a stream, or fuel gas, phase to remove the nitriles from the water phase.
Abstract:
Compositions and processes for using the compositions for applications in a subterranean formation are provided. The compositions include a composition which comprises a nitrogen-containing olefinic compound; a composition comprises a water-soluble polymer prepared from the nitrogen-containing olefinic compound and optionally an olefinic comonomer; a composition which comprises the water-soluble polymer, a cross-linking agent, and a liquid; and a composition which comprises a clay, the water-soluble polymer, and a liquid. These compositions can be used as or in compositions for enhanced oil recovery, drilling fluids, workover fluids, completion fluids, or combinations of any two or more thereof.