摘要:
Method and apparatuses for producing ethylene and propylene from naphtha feedstock are provided. The naphtha feedstock includes a first component consisting of hydrocarbons that have less than or equal to five carbon atoms and a second component. The second component consists of at least one of an isoparaffin component having at least six carbon atoms, a naphthene component having at least six carbon atoms, or an aromatic component having at least six carbon atoms. The naphtha feedstock is separated to produce a first separation stream including the first component and a second separation stream including the second component. At least a portion of the second component from the second separation stream is converted to normal paraffins. Normal paraffins from conversion of the second component and at least a portion of the first component or derivative thereof from the first separation stream are steam cracked to produce ethylene and propylene.
摘要:
Optimizing power generation from waste heat in large industrial facilities such as petroleum refineries by utilizing a subset of all available hot source streams selected based, in part, on considerations for example, capital cost, ease of operation, economics of scale power generation, a number of organic Rankine cycle (ORC) machines to be operated, operating conditions of each ORC machine, combinations of them, or other considerations are described. Subsets of hot sources that are optimized to provide waste heat to one or more ORC machines for power generation are also described. Further, recognizing that the utilization of waste heat from all available hot sources in a mega-site such as a petroleum refinery and aromatics complex is not necessarily or not always the best option, hot source units in petroleum refineries from which waste heat can be consolidated to power the one or more ORC machines are identified.
摘要:
Methods and systems are provided for improving viscosity of a heavy hydrocarbon product stream such as a vapor-liquid separator drum bottoms stream, a steam cracker tar stream, or a combination thereof by subjecting the stream to cavitation to reduce the viscosity of the product stream.
摘要:
A method for upgrading a petroleum feedstock using a supercritical water petroleum upgrading system includes introducing the petroleum feedstock, water and an auxiliary feedstock. The method includes operating the system to combine the petroleum feedstock and the water to form a mixed petroleum feedstock and introducing separately and simultaneously into a lower portion of an upflowing supercritical water reactor. The auxiliary feedstock is introduced such that a portion of a fluid contained within the upflowing reactor located proximate to the bottom does not lack fluid momentum. An embodiment of the method includes operating the supercritical water petroleum upgrading system such that the upflowing reactor product fluid is introduced into an upper portion of a. downflowing supercritical water reactor. The supercritical water petroleum upgrading system includes the upflowing supercritical water reactor and optionally a downflowing supercritical water reactor.
摘要:
A process for catalytically cracking and oxidatively desulfurizing a hydrocarbon feedstock containing organosulfur compounds is provided. Oxygen containing gas is introduced with a cracking catalyst and the feed to form a suspension. At least a portion of organosulfur compounds in the hydrocarbon feedstock are oxidized to form oxidized organosulfur compounds, carbon-sulfur bonds of oxidized organosulfur compounds are cleaved to form sulfur-free hydrocarbon compounds and sulfur oxides, and oxidized and unoxidized compounds are catalytically cracked into hydrocarbon compounds of lower boiling points. Cracked components and the cracking catalyst particles are separated and recovered for regeneration and reuse.
摘要:
Optimizing power generation from waste heat in large industrial facilities such as petroleum refineries by utilizing a subset of all available hot source streams selected based, in part, on considerations for example, capital cost, ease of operation, economics of scale power generation, a number of ORC machines to be operated, operating conditions of each ORC machine, combinations of them, or other considerations are described. Recognizing that several subsets of hot sources can be identified from among the available hot sources in a large petroleum refinery, subsets of hot sources that are optimized to provide waste heat to one or more ORC machines for power generation are also described. Further, recognizing that the utilization of waste heat from all available hot sources in a mega-site such as a petroleum refinery and aromatics complex is not necessarily or not always the best option, hot source units in petroleum refineries from which waste heat can be consolidated to power the one or more ORC machines are identified.
摘要:
A method for upgrading a petroleum feedstock using a supercritical water petroleum upgrading system includes introducing the petroleum feedstock, water and an auxiliary feedstock. The method includes operating the system to combine the petroleum feedstock and the water to form a mixed petroleum feedstock and introducing separately and simultaneously into a lower portion of an upflowing supercritical water reactor. The auxiliary feedstock is introduced such that a portion of a fluid contained within the upflowing reactor located proximate to the bottom does not lack fluid momentum. An embodiment of the method includes operating the supercritical water petroleum upgrading system such that the upflowing reactor product fluid is introduced into an upper portion of a. downflowing supercritical water reactor. The supercritical water petroleum upgrading system includes the upflowing supercritical water reactor and optionally a downflowing supercritical water reactor.
摘要:
Provided is a process for the supercritical upgrading of petroleum feedstock, wherein the process includes the use of a start-up agent, wherein the use of the start-up agent facilitates mixing of the petroleum feedstock and water, thereby reducing or eliminating the production of coke, coke precursor, and sludge.
摘要:
Apparatus for processing a heavy hydrocarbon feed includes a heater (11) for heating the heavy hydrocarbon feed. The heated feed is fed to an atmospheric fractionating tower (12), producing light atmospheric fractions and atmospheric bottoms. The apparatus includes a vacuum fractionating tower (18) for fractionating heated atmospheric bottoms heated by a further heater (16) and producing lighter vacuum fractions and vacuum residue. The apparatus includes a solvent deasphalting (SDA) unit (24) for producing deasphalted oil (DAO) and asphaltenes from the vacuum residue as well as a thermal cracker (30) for thermally cracking the deasphalted oil and producing a thermally cracked product, which is recycled to the inlet of the atmospheric fractionating tower (12). Moreover, the apparatus includes a further thermal cracker (35) for thermally cracking the lighter vacuum fractions for producing a further thermally cracked product which is recycled to the atmospheric fractionating tower.