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US 10,246,651 B2Granted
Integrated solvent deasphalting, hydrotreating and steam pyrolysis system for direct processing of a crude oil
AssigneeSaudi Arabian Oil Company
InventorsAbdennour Bourane, Raheel Shafi, Essam Sayed, Ibrahim A. Abba, Abdul Rahman Zafer Akhras
Life of this patent
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Abstract
A system is provided integrating a steam pyrolysis zone integrated with a solvent deasphalting zone and a hydrotreating zone to permit direct processing of crude oil feedstocks to produce petrochemicals including olefins and aromatics.
Claims29
An integrated solvent deasphalting, hydrotreating and steam pyrolysis system for the direct processing of a crude oil to produce olefinic and aromatic petrochemicals, the system comprising:
- a solvent deasphalting zone having a deasphalted and demetalized oil stream outlet and a bottom asphalt outlet;
- a catalytic hydroprocessing zone in fluid communication with the deasphalted and demetalized oil stream outlet of the solvent deasphalting zone, the catalytic hydroprocessing zone having inlet for receiving a mixture of the deasphalted and demetalized oil stream and hydrogen recycled from a steam pyrolysis product stream effluent, and make-up hydrogen as necessary, and an outlet for discharging a hydroprocessed effluent, the catalytic hydroprocessing zone including a reactor operating under conditions effective to produce a hydroprocessed effluent;
- a thermal cracking zone including
- a thermal cracking convection section with an inlet in fluid communication with the hydroprocessing zone outlet, and an outlet,
- a vapor-liquid separator having an inlet in fluid communication with the thermal cracking convection section outlet, a vapor fraction outlet and a liquid fraction outlet,
- wherein the vapor liquid separator includes:
- a pre-rotational element having an entry portion and a transition portion, the entry portion having an inlet for receiving a flowing fluid mixture from the thermal cracking convection section outlet, and a curvilinear conduit;
- a controlled cyclonic section having
- an inlet adjoined to the pre-rotational element through convergence of the curvilinear conduit and the cyclonic section,
- a riser section at an upper end of the cyclonic member through a vapor fraction outlet through which vapors passes to a thermal cracking pyrolysis section;
- and
- a liquid collector/settling section through which liquid passes as a discharged liquid fraction,
- and
- the thermal cracking pyrolysis section having an inlet in fluid communication with the vapor fraction outlet of the vapor-liquid separator, and a pyrolysis section outlet;
- a quenching zone in fluid communication with the pyrolysis section outlet, the quenching zone having an outlet for discharging an intermediate quenched mixed product stream and an outlet for discharging quenching solution;
- a product separation zone in fluid communication with the intermediate quenched mixed product stream outlet, and the product separation zone having a hydrogen outlet, one or more olefin product outlets and one or more pyrolysis fuel oil outlets;
- and
- a hydrogen purification zone in fluid communication with the product separation zone hydrogen outlet, the hydrogen purification zone having an outlet in fluid communication with the hydroprocessing zone.
15 more elements
An integrated solvent deasphalting, hydrotreating and steam pyrolysis system for the direct processing of a crude oil to produce olefinic and aromatic petrochemicals, the system comprising:
- a solvent deasphalting zone having a deasphalted and demetalized oil stream outlet and a bottom asphalt outlet;
- a catalytic hydroprocessing zone in fluid communication with the deasphalted and demetalized oil stream outlet of the solvent deasphalting zone, the catalytic hydroprocessing zone having inlet for receiving a mixture of the deasphalted and demetalized oil stream and hydrogen recycled from a steam pyrolysis product stream effluent, and make-up hydrogen as necessary, and an outlet for discharging a hydroprocessed effluent, the catalytic hydroprocessing zone including a reactor operating under conditions effective to produce a hydroprocessed effluent;
- a high pressure separator in fluid communication with the hydroprocessing zone reactor and the high pressure separator having a gas portion outlet in fluid communication with the hydroprocessing zone reactor and a liquid portion outlet;
- a low pressure separator in fluid communication liquid portion outlet of the high pressure separator, and the low pressure separator having a gas portion outlet and a liquid portion outlet;
- a thermal cracking zone including
- a thermal cracking convection section with an inlet in fluid communication with the liquid portion outlet of the low pressure separator, and an outlet, and
- a thermal cracking pyrolysis section having an inlet in fluid communication with the outlet of the thermal cracking convection section, and a pyrolysis section outlet;
- a quenching zone in fluid communication with the pyrolysis section outlet, the quenching zone having an outlet for discharging an intermediate quenched mixed product stream and an outlet for discharging quenching solution;
- a product separation zone in fluid communication with the intermediate quenched mixed product stream outlet, and the product separation zone having a hydrogen outlet, one or more olefin product outlets and one or more pyrolysis fuel oil outlets;
- and
- a hydrogen purification zone in fluid communication with the product separation zone hydrogen outlet, the hydrogen purification zone having an outlet in fluid communication with the hydroprocessing zone.
8 more elements
An integrated solvent deasphalting, hydrotreating and steam pyrolysis system for the direct processing of a crude oil to produce olefinic and aromatic petrochemicals, the system comprising:
- a solvent deasphalting zone having a deasphalted and demetalized oil stream outlet and a bottom asphalt outlet;
- a catalytic hydroprocessing zone in fluid communication with the deasphalted and demetalized oil stream outlet of the solvent deasphalting zone, the catalytic hydroprocessing zone having inlet for receiving a mixture of the deasphalted and demetalized oil stream and hydrogen recycled from a steam pyrolysis product stream effluent, and make-up hydrogen as necessary, and an outlet for discharging a hydroprocessed effluent, the catalytic hydroprocessing zone including a reactor operating under conditions effective to produce a hydroprocessed effluent;
- a hydroprocessed effluent vapor-liquid separator having an inlet in fluid communication with the catalytic hydroprocessing zone outlet, a vapor fraction outlet and a liquid fraction outlet;
- wherein the vapor liquid separator includes:
- a pre-rotational element having an entry portion and a transition portion, the entry portion having an inlet for receiving a flowing fluid mixture and a curvilinear conduit;
- a controlled cyclonic section having
- an inlet adjoined to the pre-rotational element through convergence of the curvilinear conduit and the cyclonic section,
- a riser section at an upper end of the cyclonic member through a vapor fraction outlet through which vapors pass;
- and
- a liquid collector/settling section through which liquid passes;
- a thermal cracking zone including
- a thermal cracking convection section with an inlet in fluid communication with the vapor fraction outlet of the vapor-liquid separator, and an outlet, and
- a thermal cracking pyrolysis section having an inlet in fluid communication with the outlet of the thermal cracking convection section, and a pyrolysis section outlet;
- a quenching zone in fluid communication with the pyrolysis section outlet, the quenching zone having an outlet for discharging an intermediate quenched mixed product stream and an outlet for discharging quenching solution;
- a product separation zone in fluid communication with the intermediate quenched mixed product stream outlet, and the product separation zone having a hydrogen outlet, one or more olefin product outlets and one or more pyrolysis fuel oil outlets;
- and
- a hydrogen purification zone in fluid communication with the product separation zone hydrogen outlet, the hydrogen purification zone having an outlet in fluid communication with the hydroprocessing zone.
14 more elements
Dependencies are inferred from the claim text.