MULTI-STAGE SUPERCRITICAL WATER UPGRADING OF ASPHALTENES FOR THE PRODUCTION OF HIGH-QUALITY MESOPHASE PITCH
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United States of America Patent
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Issued Date -
May 16, 2024
app pub date -
Nov 9, 2023
filing date -
Nov 10, 2022
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Abstract
A system for upgrading asphaltenes includes an asphaltene treatment line, a series of asphaltene upgrade units, a series of carbon fiber production units, an aqueous collection unit, and a gaseous collection unit. The series of carbon fiber production unit includes a demetallizing unit that includes a first supercritical water (SCW) treatment unit and a first centrifugation unit, a desulfurizing unit that includes a second SCW treatment unit and a second centrifugation unit, and a polycondensation unit that includes a third SCW treatment unit and a third centrifugation unit. A method for mesophase pitch production from an asphaltene feedstock and a method for manufacturing carbon fibers from asphaltene feedstock are also described.
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