摘要:
A process for the simultaneous hydroconversion of a first feedstock comprising unsaturated, halogenated organic compounds and a second feedstock comprising saturated, halogenated organic compounds which process comprises: (a) contacting the first feedstock comprising unsaturated, halogenated organic compounds with hydrogen in a first hydrogenation reaction zone operated at hydrogenation conditions selected to minimize the polymerization of unsaturated organic compounds and to produce a first hydrogenated hydrocarbonaceous stream; (b) contacting at least a portion of the first hydrogenated hydrocarbonaceous stream and the second feedstock comprising saturated, halogenated organic compounds with hydrogen in a second hydrogenation reaction zone operated at hydrogenation conditions selected to produce a second hydrogenated hydrocarbonaceous stream and to generate at least one water-soluble hydrogen halide compound; (c) contacting the resulting effluent from the second hydrogenation zone containing hydrogenated hydrocarbonaceous compounds, a hydrogen-rich gas and at least one water-soluble hydrogen halide compound with a halide-lean absorber solution in an absorption zone; (d) withdrawing a halide-rich absorber solution containing at least a portion of the water-soluble hydrogen halide compound from the absorption zone; (e) withdrawing a stream comprising hydrogenated hydrocarbonaceous compounds and a hydrogen-rich gas from the absorption zone; and (f) introducing the stream recovered in step (e) into a separation zone to provide a hydrogen-rich gaseous stream and a third hydrogenated hydrocarbonaceous stream.
摘要:
A process for treating a hydrocarbonaceous stream containing a non-distillable component to produce a hydrogenated distillable hydrocarbonaceous product while minimizing thermal degradation of the hydrocarbonaceous stream which process comprises the steps of: (a) contacting the hydrocarbonaceous stream with a hot first hydrogen-rich gaseous stream having a temperture greater than the hydrocarbonaceous stream in a flash zone at flash conditions thereby increasing the temperature of the hydrocarbonaceous stream without indirect heat exchange and vaporizing at least a portion thereof to provide a hydrocarbonaceous vapor stream comprising hydrogen and a heavy stream comprising the non-distillable component; (b) contacting the hydrocarbonaceous vapor stream comprising hydrogen with a hydrogenation catalyst in a hydrogenation reaction zone at hydrogenation conditions to increase the hydrogen content of the hydrocarbonaceous compounds contained in the hydrocarbonaceous vapor stream; (c) condensing at least a portion of the resulting effluent from the hydrogenation reaction zone to provide a second hydrogen-rich gaseous stream and a liquid stream comprising hydrogenated distillable hydrocarbonaceous compounds; (d) recovering a hydrogenated distillable hydrocarbonaceous product from the liquid stream comprising hydrogenated distillable hydrocarbonaceous compounds; and (e) reacting at least a portion of the heavy stream comprising the non-distillable component recovered from step (a) in a thermal coking zone at thermal coking conditions to provide a thermal coking zone effluent.
摘要:
A process for treating a temperature-sensitive hydrocarbonaceous stream containing a non-distillable component to produce a hydrogenated distillable hydrocarbonaceous product and a heavy product comprising the non-distillable component while minimizing thermal degradation of the hydrocarbonaceous stream which process comprises the steps of: (a) contacting the hydrocarbonaceous stream with a first hydrogen-rich gaseous stream having a temperature greater than the hydrocarbonaceous stream in a flash zone at flash conditions thereby increasing the temperature of the hydrocarbonaceous stream with minimal thermal degradation and vaporizing at least a portion thereof to provide a hydrocarbonaceous vapor stream comprising hydrogen and a heavy product comprising the non-distillable component; (b) contacting the hydrocarbonaceous vapor stream comprising hydrogen recovered from step (a) without intermediate separation with a hydrogenation catalyst in a hydrogenation reaction zone at hydrogenation conditions to increase the hydrogen content of the hydrocarbonaceous compounds contained in the hydrocarbonaceous vapor stream; (c) condensing at least a portion of the resulting effluent from the hydrogenation reaction zone to provide a second hydrogen-rich gaseous stream and a liquid stream comprising hydrogenated distillable hydrocarbonaceous compounds; and (d) recovering a hydrogenated distillable hydrocarbonaceous product from the liquid stream comprising hydrogenated distillable hydrocarbonaceous compounds.
摘要:
A process for the simultaneous hydroconversion of a first feedstock comprising unsaturated, halogenated organic compounds and a second feedstock comprising saturated, halogenated organic compounds which process comprises: (a) contacting the first feedstock comprising unsaturated, halogenated organic compounds with a first dried hydrogen-rich gas stream in a first hydrogenation reaction zone operated at hydrogenation conditions selected to minimize the polymerization of unsaturated organic compounds and to produce a first hydrogenated stream comprising hydrocarbonaceous compounds; (b) reacting at least a portion of the first hydrogenated stream comprising hydrocarbonaceous compounds and the second feedstock comprising saturated, halogenated organic compounds with hydrogen in a second hydrogenation reaction zone operated at hydrogenation conditions selected to produce a second hydrogenated stream comprising hydrocarbonaceous compounds and to generate at least one water-soluble hydrogen halide compound; (c) contacting the the second hydrogenated stream with a halide-lean absorber solution in an absorption zone; (d) withdrawing a halide-rich absorber solution containing at least a portion of the water-soluble hydrogen halide compound from the absorption zone; (e) withdrawing a stream comprising hydrogenated hydrocarbonaceous compounds and a hydrogen-rich gas from the absorption zone; (f) introducing the stream recovered in step (e) into a separation zone to produce a hydrogen-rich gas stream comprising water vapor and a third hydrogenated stream comprising hydrocarbonaceous compounds; (g) removing at least a portion of the water vapor from the hydrogen-rich gas stream comprising water vapor in a drying zone to produce a second dried hydrogen-rich gas stream; and (h) recycling at least a portion of the second dried hydrogen-rich gas stream to step (a) as the first dried hydrogen-rich gas stream.
摘要:
A process for treating a temperature-sensitive hydrocarbonaceous stream containing a non-distillable component to produce a hydrogenated distillable hydrocarbonaceous product and a heavy product comprising the non-distillable component while minimizing thermal degradation of the hydrocarbonaceous stream which process comprises the steps of: (a) contacting the hydrocarbonaceous stream with a hot first hydrogen-rich gaseous stream having a temperature greater than the hydrocarbonaceous stream in a first flash zone at flash conditions including a first pressure thereby increasing the temperature of the hydrocarbonaceous stream and vaporizing at least a portion thereof to provide a first hydrocarbonaceous vapor stream comprising hydrogen and a first heavy product stream comprising the non-distillable component; (b) contacting the first heavy product stream comprising the non-distillable component with a hot second hydrogen-rich gaseous stream in a second flash zone at flash conditions including a second pressure which is less than the first pressure of step (a) thereby vaporizing at least a portion thereof to provide a second hydrocarbonaceous vapor stream comprising hydrogen and a second heavy product stream comprising the non-distillable component; (c) condensing at least a portion of the second hydrocarbonaceous vapor stream to provide a first liquid stream comprising distillable hydrocarbonaceous compounds; (d) contacting the first hydrocarbonaceous vapor stream comprising hydrogen from step (a) and the first liquid stream comprising distillable hydrocarbonaceous compounds from step (c) with a hydrogenation catalyst in a hydrogenation reaction zone at hydrogenation conditions to increase the hydrogen content of the hydrocarbonaceous compounds introduced into the hydrogenation reaction zone; (e) condensing at least a portion of the resulting effluent from the hydrogenation reaction zone to provide a third hydrogen-rich gaseous stream and a liquid stream comprising hydrogenated distillable hydrocarbonaceous compounds; and (f) recovering a hydrogenated distillable hydrocarbonaceous product from the liquid stream comprising hydrogenated distillable hydrocarbonaceous compounds.
摘要:
A process has been developed for producing a diesel boiling point range product and an aviation boiling point range product from renewable feedstocks such as plant and animal oils. The process involves treating a renewable feedstock by hydrogenating and deoxygenating to provide a hydrocarbon fraction which is then isomerized and selectively cracked to form the diesel boiling point range product and the aviation boiling point range product. A portion of the diesel boiling point range product, aviation boiling point range product, naphtha product, LPG, or any combination thereof can be optionally used as a rectification agent in the selective hot high pressure hydrogen stripper to decrease the amount of product carried in the stripper overhead.
摘要:
A process has been developed for producing diesel boiling range fuel from renewable feedstocks such as plant oils and animal oils, fats, and greases. The process involves treating a renewable feedstock by hydrogenating and deoxygenating i.e. decarboxylating, decarbonylating, and/or hydrodeoxygenating to provide a hydrocarbon fraction useful as a diesel boiling range fuel or diesel boiling range fuel blending component. If desired, the hydrocarbon fraction can be isomerized to improve cold flow properties. A portion of the hydrogenated and deoxygenated feedstock is selectively separated and then recycled to the treatment zone to increase the hydrogen solubility of the reaction mixture.
摘要:
A process has been developed for producing diesel boiling range fuel from renewable feedstocks such as plant and animal fats and oils, the process providing for sulfur management. The process involves catalytically treating a renewable feedstock by hydrogenating and deoxygenating to provide a hydrocarbon fraction useful as a diesel boiling range fuel. The hydrocarbon fraction is isomerized to improve cold flow properties. A selective separation such as a hot high pressure hydrogen stripper is used to remove at least the carbon oxides from the first zone effluent before entering the isomerization zone, and to provide liquid recycle to the treating zone at pressure and temperature. A vapor stream is separated from the isomerization effluent and at least carbon dioxide is removed using at least one selective or flexible amine solution absorber. The resulting hydrogen-rich stream is recycled to the deoxygenation reaction zone.
摘要:
A process has been developed for producing diesel fuel from renewable feedstocks such as plant oils and greases. The process involves treating a renewable feedstock by hydrogenating and deoxygenating i.e. decarboxylating and/or hydrodeoxygenating to provide a hydrocarbon fraction useful as a diesel fuel. If desired, the hydrocarbon fraction can be isomerized to improve cold flow properties. A portion of the hydrogenated and deoxygenated feedstock is selectively separated and then recycled to the treatment zone to increase the hydrogen solubility of the reaction mixture. A diesel range stream or a naphtha range stream, or a mixture of the two streams is used as a rectification agent in the selective hot high pressure hydrogen stripper to decrease the amount of product carried in the overhead.
摘要:
A process has been developed for producing a diesel boiling point range product and an aviation boiling point range product from renewable feedstocks such as plant and animal oils. The process involves treating a renewable feedstock by hydrogenating and deoxygenating to provide a hydrocarbon fraction which is then isomerized and selectively cracked to form the diesel boiling point range product and the aviation boiling point range product. A portion of the diesel boiling point range product, aviation boiling point range product, naphtha product, LPG, or any combination thereof can be optionally used as a rectification agent in the selective hot high pressure hydrogen stripper to decrease the amount of product carried in the stripper overhead.