Production of petroleum pitch
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United States of America Patent
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Aug 2, 2022
Grant Date -
Nov 25, 2021
app pub date -
May 19, 2020
filing date -
May 19, 2020
priority date (Note) -
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Abstract
A process to produce pitch, the process comprising the steps of introducing a depressurized effluent to a flash column; separating the depressurized effluent in the flash column to produce a liquid product; introducing the liquid product to a dweller; operating the dweller at a temperature between 350° C. and 500° C., a pressure between 0.1 psig and 10 psig, and a residence time between 30 minutes and 4 hours to produce a pitch stream and a reaction gas stream, wherein the dweller is a continuous stirred tank reactor (CSTR), wherein dehydrogenative polymerization reactions occur in the dweller to produce pitch, wherein the inert gas stream is operable to remove volatile components from the liquid product; removing a pitch stream from the dweller, wherein the pitch stream comprises the pitch; and removing a reaction gas stream, wherein the reaction gas stream comprises the volatile components and nitrogen.
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