PATENT CLAIM ANALYSIS

Application Number: 16074454
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2019-02
Patent Classification: ["585", "628000"]

Abstract:
The invention relates to a method for producing butadiene from n-butenes having the steps: A) providing an n-butene-comprising feed gas stream a; B) feeding the n-butene-comprising feed gas stream a 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, optionally carbon oxides and optionally 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 step, wherein at least one aqueous condensate stream c1 and a gas stream c2 comprising butadiene, n-butenes, steam, oxygen, low-boiling hydrocarbons, optionally carbon oxides and optionally inert gases is obtained; Da) separating off non-condensable and low-boiling gas components comprising oxygen, low-boiling hydrocarbons, optionally carbon oxides and optionally inert gases as gas stream d2 from the gas stream c2 by absorbing the C 4  hydrocarbons comprising butadiene and n-butenes in an absorption medium, wherein an absorption medium stream loaded with C 4  hydrocarbons and the gas stream d2 are obtained, and Db) subsequently desorbing the C 4  hydrocarbons from the loaded absorption medium stream in a desorption column, wherein a C 4  product gas stream d1 is obtained, Dc) separating off the steam condensate from the absorption medium in a phase separator and vaporizing it in a steam generator and providing it again as stripping gas in the desorption column, wherein, the steam condensate before the vaporization in a steam generator, is subjected to a pretreatment in a further method step.

Claim (Index 15):
The method according to  claim 13 , wherein the low-boiling minor components are separated off from the steam condensate by stripping with a stripping gas, by heating, or by stripping and heating.

Metadata:
- Claim Count in Document: 23.0
- Percentile: 96.0
- Lexical Diversity: 2.88991
- Patent Class: 585.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15033203', '16069553', '15503189', '15523862', '15561711']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7556077801645207
- 35 USC 102 Novelty (BERT): 0.575079438304334
- Combined Prediction Score: 0.737554945978502
- Mean Citation Score: 462.280162
- Max Citation Score: 488.24298
- Similarity Product: 354.9334676077044

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

Dataset: test