Mineral oils: processes and products – Chemical conversion of hydrocarbons – Plural parallel stages of chemical conversion
Patent
1997-11-14
1999-12-21
Griffin, Walter D.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Plural parallel stages of chemical conversion
208 79, 208134, 208141, 585300, 585302, 585805, 585812, C10G 5106
Patent
active
060044527
ABSTRACT:
A process is provided for producing high purity benzene and high purity paraxylene from a hydrocarbon feed. In one aspect, the process comprises: (a) reforming a hydrocarbon feed using either a monofunctional catalyst or a bifunctional catalyst to provide one or more reformate streams; (b) fractionating the reformate stream to provide a toluene stream, a benzene stream, and a xylene stream; (c) subjecting the toluene stream to disproportionation; (d) purifying the benzene stream by extraction followed by distillation to provide a high purity benzene product; and (e) purifying the xylene stream by simulated moving bed countercurrent adsorption followed by crystallization to provide a high purity paraxylene product.
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Ash Gary A
Dao Nhu Q
Gloyn Arnold J
Haritatos N J
Hodgen Paul I
Chevron Chemical Company LLC
Dang Thuan D.
Griffin Walter D.
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