PROCESS FOR CRACKING HEAVY HYDROCARBON FEED
A process for cracking a heavy hydrocarbon feed comprising a vaporization step, a catalytic cracking step, a hydrotreating step, and a steam cracking step is disclosed. The heavy hydrocarbon feed is passed to a first zone of a vaporization unit to separate a first vapor stream and a first liquid str...
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Main Author | |
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Format | Patent |
Language | English |
Published |
05.07.2012
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Subjects | |
Online Access | Get full text |
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Summary: | A process for cracking a heavy hydrocarbon feed comprising a vaporization step, a catalytic cracking step, a hydrotreating step, and a steam cracking step is disclosed. The heavy hydrocarbon feed is passed to a first zone of a vaporization unit to separate a first vapor stream and a first liquid stream. The first liquid stream is passed to a second zone of the vaporization unit and contacted with a counter-current steam to produce a second vapor stream and a second liquid stream. The first vapor stream and the second vapor stream are cracked in the radiant section of the steam cracker to produce a cracked effluent. The second liquid stream is catalytically cracked to produce a cracked product. The cracked product is distilled to produce a overhead stream, a light cycle oil, and a heavy cycle oil. The light cycle oil is reacted with hydrogen in the presence of a catalyst to produce a hydrotreated light cycle oil. The hydrotreated light cycle oil and the overhead stream are fed to the vaporization unit. |
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Bibliography: | Application Number: US20100980514 |