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US 10,479,743 B2Granted
Process for the separation of ethylbenzene
AssigneeSCG Chemicals Co., Ltd.
InventorsAttapong Thirasak, Alisa Kammafoo, Arnat Prombunglum
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Abstract
Ethylbenzene can be separated from a C8 aromatics mixture containing ethylbenzene and a close boiling compound by extractive distillation using an extractive agent comprising a mixture of a chlorinated aromatic compound and another compound selected from furandione derivatives and organic nitriles.
Claims14
A process for separation of ethylbenzene from a mixture comprising C8 aromatics comprising:
- distilling the mixture comprising C8 aromatics in the presence of an extractive agent;
- wherein the extractive agent comprises a chlorinated aromatic compound and an organic compound selected from the group consisting of furandione derivatives and organic nitriles;
- wherein the extractive agent comprises 5 to 20 percent by weight of the organic compound;
- and
- wherein a weight ratio of the extractive agent to the mixture comprising C8 aromatics is in the range of 0.2:1 to 20:1.
2 more elements
Dependencies are inferred from the claim text.