PROCESS TO PRODUCE BLOWN ASPHALT
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United States of America Patent
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Issued Date -
Jun 20, 2019
app pub date -
Feb 18, 2019
filing date -
Aug 25, 2017
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Abstract
A process for producing blown asphalt comprising the steps of mixing a heated hydrocarbon stream and a supercritical water in to produce a mixed stream, operating the supercritical water reactor to produce a reactor effluent, reducing the temperature of the reactor effluent in the cooler to produce a cooled effluent, feeding the cooled effluent through a depressurizing device to produce a depressurized stream, separating the depressurized stream in the flash drum to produce a light fraction stream and a heavy fraction stream, the heavy fraction stream contains a maltene fraction, an asphaltene fraction, and water, introducing the heavy fraction stream to a storage tank, withdrawing an oxidizing reactor feed from the storage tank, introducing the oxidizing reactor feed to an oxidation reactor, and operating the oxidation reactor at an oxidation temperature and an oxidation pressure to produce a product effluent that comprises an oxidized asphaltene fraction.
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