PATENT CLAIM ANALYSIS

Application Number: 15747951
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["585", "478000"]

Abstract:
Para-xylene is separated from a mixture of C8 aromatics using a simulated moving bed (SMB) adsorption process, wherein a MOF is used as an adsorbent and an alkane or alkene having 7 or less carbon atoms, such as hexane or heptane is used as desorbent. Because of the difference in boiling points of a hexane or heptane desorbent as compared to conventional desorbents such as toluene or para-diethylbenzene, less energy is required to separate hexane or heptane from C8 aromatics by distillation than the energy required to separate toluene or diethylbenzene from C8 aromatics by distillation.

Claim (Index 1):
A process for separating para-xylene from a mixture of para-xylene and at least one other C8 aromatic by simulated moving-bed adsorptive separation, said process comprising the steps of:\n (a) introducing a feed stream, which comprises para-xylene and at least one other C8 aromatic, into a simulated moving-bed adsorptive apparatus, wherein said simulated moving-bed adsorptive apparatus comprises multiple beds containing adsorbent material; (b) introducing a desorbent stream, which comprises desorbent, into the simulated moving-bed adsorptive apparatus; (c) withdrawing an extract stream, which comprises desorbent and para-xylene, from the simulated moving-bed adsorptive apparatus; (d) withdrawing at least one raffinate stream, which comprises desorbent and at least one C8 aromatic, which is different from the para-xylene in the extract stream of step (c), from the simulated moving-bed adsorptive apparatus; (e) maintaining a flow of circulating fluid throughout the simulated moving-bed adsorptive apparatus; and (f) switching the flow of streams into and out of the simulated moving-bed adsorptive apparatus to a bed downstream in terms of the direction of the circulating fluid at a set time interval,\n wherein the desorbent stream of step (b) comprises at least 50 wt % of one or a mixture of of linear or branched alkanes or alkenes having 7 or less carbon atoms, and \n wherein the adsorbent material of step (a) comprises a para-xylene selective Metal Organic Framework (MOF).

Metadata:
- Claim Count in Document: 20.0
- Percentile: 86.0
- Lexical Diversity: 1.77586
- Patent Class: 585.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15548072', '12146901', '12719410', '14969327', '13861473']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.747618066937721
- 35 USC 102 Novelty (BERT): 0.5469510989044335
- Combined Prediction Score: 0.7275513701343923
- Mean Citation Score: 396.296656
- Max Citation Score: 405.47202
- Similarity Product: 357.6953814548993

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test