PATENT CLAIM ANALYSIS

Application Number: 15861044
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["208", "113000"]

Abstract:
A process for the treatment of a hydrocracking unit bottoms recycle stream, and preferably the fresh hydrocracker feed to remove heavy poly-nuclear aromatic (HPNA) compounds and HPNA precursors employs, in the alternative, an adsorption step which removes most of the HPNA compounds followed by an ionic liquid extraction step to remove the remaining HPNA compounds, or a first ionic liquid extraction step which removes most of the HPNA compounds followed by an adsorption step to remove the remaining HPNA compounds. Ionic liquids of the general formula Q + A −  are identified for use in the process; organic polar solvents are identified for removal of the HPNA compounds in solution. Suitable adsorbents are identified for use in packed bed or slurry bed columns that operate within specified temperature and pressure ranges.

Claim (Index 12):
A process for the treatment of a hydrocracking unit bottoms recycle stream containing heavy poly-nuclear aromatic (HPNA) compounds and HPNA precursors to reduce the content of HPNA compound and precursors, the process comprising:\n a. introducing the bottoms recycle stream into an extraction unit with one or more ionic liquids for a predetermined period of time to extract the HPNA compounds and HPNA precursors and to produce an extraction unit effluent stream; b. introducing the extraction unit effluent stream containing the extracted HPNA compounds and HPNA precursors and the one or more ionic liquids into a separation unit for contact with an organic polar solvent; c. mixing the liquids in the separation unit for a time that is sufficient to form a solution of the HPNA compounds and HPNA precursors in the polar solvent; d. recovering the one or more ionic liquids from the separation unit for re-use in the extraction unit; e. transferring the solvent containing the HPNA compounds and HPNA precursors to a solvent recovery unit and recovering a solvent stream for re-use in the separation unit; f. transferring from the separation unit the remaining treated hydrocarbon stream to a liquid-liquid separator and recovering as separate streams\n (i) a treated hydrocarbon recycle stream having a substantially reduced content of HPNA compounds and HPNA precursors, \n (ii) residual ionic liquids, and \n (iii) HPNA compounds and HPNA precursors; \n g. contacting the treated hydrocarbon recycle stream with an effective amount of adsorbent material to produce an adsorbent-treated hydrocarbon recycle stream; and h. recovering an adsorbent-treated recycle stream having a reduced content of HPNA compounds.

Metadata:
- Claim Count in Document: 4.0
- Percentile: 86.0
- Lexical Diversity: 1.88
- Patent Class: 208.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14469905', '13012353', '15445681', '13880356', '12574115']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.749812928922326
- 35 USC 102 Novelty (BERT): 0.5534813821511859
- Combined Prediction Score: 0.7301797742452121
- Mean Citation Score: 325.220206
- Max Citation Score: 388.62567
- Similarity Product: 340.0764624465537

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

Dataset: test