| 摘要 |
<p>C4-plus feed paraffinic hydrocarbons (8) are dehydrogenated (9) to yield an olefin-containing vapor stream (10), which is partially condensed (6, 11) to produce a liquid phase process stream (14) which contains by-product diolefins along with the intended product monoolefins. The liquid phase process stream (14) and added hydrogen (15) are passed through a selective hydrogenation zone (17) in which diolefins are catalytically converted to monoolefins. This increases the quality of the product monoolefin stream. The selective hydrogenation zone is located between the vapor-liquid separator (12) and stripper column (19) of the dehydrogenation zone (9).</p> |
