PATENT CLAIM ANALYSIS

Application Number: 16107204
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2018-12
Patent Classification: ["062", "617000"]

Abstract:
A system and method for argon and nitrogen extraction from a feed stream comprising hydrogen, methane, nitrogen and argon, such as tail gas of an ammonia production plant is provided. The disclosed system and method provides for nitrogen-argon rectification and the methane rejection within a column system comprised of at least one distillation column. Nitrogen and argon are further separated and to produce liquid products. An argon stripping column arrangement is disclosed where residual argon is further removed from the methane-rich fuel gas and recycled back to the feed stream.

Claim (Index 35):
A system for recovery of argon from a feed stream comprising hydrogen, nitrogen, methane and argon, the system comprising:\n a conditioning circuit configured for conditioning the feed stream to a temperature suitable for rectification and at pressure less than or equal to about 400 psia; at least one rectifying column configured to receive the conditioned feed stream and produce an argon depleted, nitrogen rich vapor stream, an argon enriched side draw, and a methane-rich liquid stream; a hydrogen stripping column configured to receive the argon enriched stream and strip hydrogen and methane from the argon enriched stream to produce a hydrogen and methane rejection gas stream and a hydrogen-free argon enriched stream; and a distillation column arrangement configured to receive the hydrogen-free argon enriched stream and produce a high purity argon stream and a nitrogen overhead gas stream.

Metadata:
- Claim Count in Document: 11.0
- Percentile: 96.0
- Lexical Diversity: 1.61667
- Patent Class: 62.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15453942', '15453951', '15297446', '15271533', '15271594']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.857691327261027
- 35 USC 102 Novelty (BERT): 0.6123061591674022
- Combined Prediction Score: 0.8331528104516646
- Mean Citation Score: 491.6407980000001
- Max Citation Score: 535.9129
- Similarity Product: 517.4852337809682

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