PATENT CLAIM ANALYSIS

Application Number: 15997873
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-01
Patent Classification: ["208", "305000"]

Abstract:
The present invention relates to a process and apparatus for reducing the desorbent recovery cost in a light desorbent system. More specifically, the present invention relates to an alternate flow scheme that for pre-fractionation of the extract column feed which includes two extract columns which reduces the desorbent recovery costs in a light desorbent system.

Claim (Index 1):
A process for desorbent recovery, comprising:\n passing a hydrocarbon stream to a first extract column to produce a first overhead stream, a first desorbent recycle stream, and a first bottoms stream; passing the first overhead stream to a first condensing and sub-cooling zone to produce a water stream and a first desorbent reflux stream that is sent back to the first extract column; passing the first desorbent recycle stream to an adsorbent chamber; passing a first portion of the first bottoms stream to a first reboiler and passing a second portion of the first bottoms stream to a second extract column to produce a second overhead stream and a second bottoms stream; passing the second overhead to the first reboiler and a second reboiler to produce a heated stream that produces a second desorbent recycle stream and a second treated desorbent stream that is sent back the second extract column; passing the second overhead to the first reboiler to produce a condensed liquid stream that is sent to a second condensing zone to produce a second desorbent reflux stream and a second desorbent recycle stream; passing the second desorbent reflux stream to the second extract column; passing the second desorbent recycle stream to the adsorbent chamber; and passing a first portion of the second bottoms stream to a second reboiler wherein the second reboiler receives a vapor stream from the raffinate column and a liquid return, and passing a second portion of the second bottoms stream to a paraxylene column.

Metadata:
- Claim Count in Document: 29.0
- Percentile: 94.0
- Lexical Diversity: 1.52632
- Patent Class: 208.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15789687', '12868286', '14040391', '12146901', '11617387']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6804760527671094
- 35 USC 102 Novelty (BERT): 0.5383029977853279
- Combined Prediction Score: 0.6662587472689313
- Mean Citation Score: 239.966944
- Max Citation Score: 330.7409
- Similarity Product: 289.61042655959733

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

Dataset: test