PATENT CLAIM ANALYSIS

Application Number: 16061898
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-12
Patent Classification: ["203", "082000"]

Abstract:
The present disclosure provides methods and systems for producing 1,3-butadiene. In certain embodiments, the present disclosure provides methods for the extractive distillation of 1,3-butadiene in a divided wall distillation column having a first region, a second region and a combined bottom region. An exemplary method can include feeding a C 4  hydrocarbon stream and a first solvent into the first region and removing a first stream from the first region. The method can further include feeding a second solvent into the second region, removing a second stream that includes 1,3-butadiene from the second region, and removing a third stream from the combined bottom region.

Claim (Index 20):
A method for extractive distillation of 1,3-butadiene, the method comprising the steps of:\n (a) providing a distillation column that comprises a longitudinal wall dividing the distillation column into a first region, a second region and a combined bottom region, a first condenser coupled to the first region, a second condenser coupled to the second region and a reboiler coupled to the combined bottom region; (b) feeding a C 4  hydrocarbon stream comprising isobutene, 1,2-butadiene, 1,3-butadiene, butane, isobutane, 1-butene, trans-2-butene, cis-2-butene, vinylacetylene, ethylacetylene, and methylacetylene into a middle section of the first region of the distillation column; (c) feeding acetonitrile into an upper section of the first region of the distillation column; (d) removing a first stream comprising isobutene, butane, isobutane, 1-butene, trans-2-butene and cis-2-butene from an upper section of the first region of the distillation column via a first condenser; (e) transferring a first reflux fluid from the first condenser to the first region of the distillation column; (f) feeding acetonitrile into an upper section of the second region of the distillation column; (g) removing a second stream comprising greater than about 90% of 1,3-butadiene from an upper section of the second region of the distillation column via a second condenser; (h) transferring a second reflux fluid from the second condenser to the second region of the distillation column; (i) removing a third stream comprising vinylacetylene, ethylacetylene, methylacetylene, 1-3 butadiene and acetonitrile from the combined bottom region of the distillation column; and (j) separating 1,3-butadiene and/or acetonitrile from the third stream and recycling 1,3-butadiene and/or acetonitrile back to the combined bottom region of the distillation column.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 94.0
- Lexical Diversity: 2.33333
- Patent Class: 203.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15763743', '12452715', '10521364', '10565209', '13089682']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7005145146975644
- 35 USC 102 Novelty (BERT): 0.5480606182260522
- Combined Prediction Score: 0.6852691250504133
- Mean Citation Score: 356.140084
- Max Citation Score: 390.50992
- Similarity Product: 348.89304294820784

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