초록 ▼

One exemplary embodiment can include an aromatic production apparatus. The aromatic production apparatus can include a first fractionation zone, a second fractionation zone, and a third fractionation zone. Generally, the first fractionation zone can provide a stream rich in an aromatic C8− an

One exemplary embodiment can include an aromatic production apparatus. The aromatic production apparatus can include a first fractionation zone, a second fractionation zone, and a third fractionation zone. Generally, the first fractionation zone can provide a stream rich in an aromatic C8− and a stream rich in an aromatic C9, the second fractionation zone can separate at least one of benzene and optionally toluene from a transalkylation zone effluent and provide a feed to the first fractionation zone, and the third fractionation zone can receive the stream rich in the aromatic C8− from the first fractionation zone. An effluent from the third fractionation zone can be directly comprised in a para-xylene-separation zone feed to a para-xylene-separation zone.

대표청구항 ▼

What is claimed is: 1. An aromatic production apparatus, comprising: a) a first fractionation zone for providing a stream rich in an aromatic C8− and a stream rich in an aromatic C9; b) a second fractionation zone for separating at least one of benzene and optionally toluene from a transalky

What is claimed is: 1. An aromatic production apparatus, comprising: a) a first fractionation zone for providing a stream rich in an aromatic C8− and a stream rich in an aromatic C9; b) a second fractionation zone for separating at least one of benzene and optionally toluene from a transalkylation zone effluent and providing a feed to the first fractionation zone; and c) a third fractionation zone for receiving the stream rich in the aromatic C8− from the first fractionation zone wherein an effluent from the third fractionation zone is directly comprised in a para-xylene-separation zone feed to a para-xylene-separation zone. 2. The aromatic production apparatus according to claim 1, wherein the second fractionation zone comprises a benzene column and a toluene column. 3. The aromatic production apparatus according to claim 1, wherein the first fractionation zone comprises a column providing the stream rich in the aromatic C8− as a top stream and the stream rich in the aromatic C9 as a bottom stream. 4. The aromatic production apparatus according to claim 1, wherein the first fractionation zone comprises a column providing the stream rich in the aromatic C8− as a top stream, the stream rich in the aromatic C9 as a side stream, and a bottom stream rich in an aromatic C10+. 5. The aromatic production apparatus according to claim 1, further comprising a transalkylation zone adapted to receive at least a portion of the stream rich in the aromatic C9. 6. The aromatic production apparatus according to claim 5, wherein the first fractionation zone comprises a column providing the stream rich in the aromatic C8− as a top stream, the stream rich in the aromatic C9 as a side stream, and a bottom stream rich in an aromatic C10+. 7. The aromatic production apparatus according to claim 6, further comprising: an alkylaromatic isomerization zone adapted to receive at least a portion of the para-xylene-separation zone effluent from the para-xylene-separation zone; and an extraction zone providing at least a portion of an extraction zone effluent to the second fractionation zone. 8. An aromatic production apparatus, comprising: a) a naphtha hydrotreating zone; b) a reforming zone receiving an effluent from the naphtha hydrotreating zone; c) an extraction zone receiving a first fraction from the reforming zone; and d) a para-xylene-separation zone receiving a second fraction from the extraction zone and a transalkylation zone via a first fractionation zone and a second fractionation zone; wherein i) the first fractionation zone for providing a stream rich in an aromatic C8− and a stream rich in an aromatic C9 wherein the first fractionation zone is communicated directly with the transalkylation zone and an aromatic gasoline blend to provide at least a portion of the stream rich in the aromatic C9 to the transalkylation zone or the aromatic gasoline blend; and ii) the second fractionation zone comprises a benzene column and a toluene column wherein a bottom stream from the toluene column is provided to the first fractionation zone.