PATENT CLAIM ANALYSIS

Application Number: 16069553
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-01
Patent Classification: ["585", "621000"]

Abstract:
The invention relates to a method for producing butadiene from n-butenes having the steps: A) providing a feed gas stream a comprising n-butenes; B) feeding the feed gas stream a comprising the n-butenes and an oxygen-comprising gas into at least one oxidative dehydrogenation zone and oxidatively dehydrogenating n-butenes to butadiene, wherein a product gas stream b comprising butadiene, unreacted n-butenes, steam, oxygen, low-boiling hydrocarbons, high-boiling minor components, possibly carbon oxides and possibly inert gases is obtained; Ca) cooling the product gas stream b by contacting it with a refrigerant and condensing at least a part of the high-boiling minor components; Cb) compressing the remaining product gas stream b in at least one compression stage, wherein at least one aqueous condensate stream c1 and a gas stream c2 comprising butadiene, n-butenes, steam, oxygen, low-boiling hydrocarbons, possibly carbon oxides and possibly inert gases are obtained; Da) separating off non-condensable and low-boiling gas components comprising oxygen, low-boiling hydrocarbons, possibly carbon oxides and possibly inert gases as gas stream d2 from the gas stream c2 by absorbing the C 4  hydrocarbon-comprising butadiene and n-butenes in an absorbent, wherein an absorbent stream loaded with C 4  hydrocarbons and the gas stream d2 are obtained, and Db) subsequent desorption of the C 4  hydrocarbons from the loaded absorbent stream in a desorption column, wherein a C 4  product gas stream d1 is obtained, wherein a polymerization inhibitor is added in step Db) at the column head of the desorption column.

Claim (Index 14):
The method according to  claim 13 , wherein the polymerization inhibitor is added in amounts such that the concentration of the polymerization inhibitor in the liquid condensate stream obtained at the top condenser is from 10 to 1500 ppm.

Metadata:
- Claim Count in Document: 26.0
- Percentile: 95.0
- Lexical Diversity: 2.76
- Patent Class: 585.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['16074454', '15503189', '15033203', '15514077', '15523862']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7537341502626549
- 35 USC 102 Novelty (BERT): 0.5485655551947959
- Combined Prediction Score: 0.733217290755869
- Mean Citation Score: 358.397706
- Max Citation Score: 416.31207
- Similarity Product: 280.0957303132117

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

Dataset: test