Asphalt oxidation process using liquid jet ejection
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United States of America Patent
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Sep 20, 2016
Grant Date -
Dec 25, 2014
app pub date -
Sep 12, 2014
filing date -
Nov 29, 2010
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Abstract
Provided is a process for increasing the softening temperature of asphalts by use of liquid jet ejector with a diptube connected to the discharge connection of the liquid jet ejector for ejecting an air/asphalt mixture below a liquid level in an oxidizer vessel. The liquid jet ejector is used as both an air compressor and an air/oil mixer. The liquid jet ejector motive fluid is hot asphalt and the entrained vapor is air. The combined liquid jet ejector with a diptube process provides for an improvement in asphalt air blowing efficiency by requiring less cumulative air to produce a given asphalt softening temperature.
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