UPGRADING STREAMS COMPRISING C3 AND C4 HYDROCARBONS
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United States of America
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Issued Date -
Mar 13, 2025
app pub date -
Nov 25, 2024
filing date -
Nov 25, 2024
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Abstract
A first stream containing 1,3-butadiene, C4 acetylenes, and optionally C3 hydrocarbons, is mixed with a portion of the liquid recycle stream from a C4 acetylene hydrogenation reactor containing hydrogenated C4 acetylenes and a molecular hydrogen-containing stream, the resulting mixed stream is then fed to a C4 acetylene hydrogenation reactor to selectively hydrogenate the C4 acetylenes in the crude butadiene stream without appreciable 1,3-butadiene conversion.
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