PATENT CLAIM ANALYSIS

Application Number: 16072751
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-01
Patent Classification: ["585", "655000"]

Abstract:
The present invention relates to a method of preparing butadiene and a device for preparing the same. According to the present invention, since butane is used as a diluent gas, even when a refrigerant belonging to a grade lower than a very low temperature refrigerant is used, a C4 mixture and gas products excluding butadiene may be easily separated, and loss of active ingredients may be minimized, which may increase productivity while reducing raw material costs, thereby improving economic efficiency. In addition to these advantages, when the method and device of the present invention are used, high-purity butadiene may be safely prepared.

Claim (Index 16):
A device for preparing butadiene, comprising:\n an oxidative dehydrogenation reaction part, in which oxidative dehydrogenation of reaction raw materials containing butene, oxygen (O 2 ), steam, and a diluent gas is performed to obtain oxidative dehydrogenation reaction products containing butadiene; a cooling separation part responsible for separating water from the oxidative dehydrogenation reaction products containing butadiene; a condensation separation part responsible for condensing hydrocarbons from the oxidative dehydrogenation reaction products, from which water is separated; an absorption separation part responsible for separating COx, O 2 , and a noncombustible diluent gas from oxidative dehydrogenation reaction products containing hydrocarbons not condensed in the condensation separation part under conditions that a noncombustible diluent gas is fed; and a purification part responsible for separating butadiene from crude hydrocarbons comprising n-butane, butene, and butadiene, which are condensed in the condensation separation part, wherein a gas containing n-butane remaining after butadiene is separated in the purification part is fed again into the oxidative dehydrogenation reaction part; a discharge stream containing butene remaining after butadiene is separated in the purification part is mixed with butene supplied as a raw material and fed into the oxidative dehydrogenation reaction part; and the diluent gas is butane.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 95.0
- Lexical Diversity: 1.68657
- Patent Class: 585.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['10501876', '13752516', '16074454', '14771227', '15033203']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7007466005387647
- 35 USC 102 Novelty (BERT): 0.5057817722155102
- Combined Prediction Score: 0.6812501177064393
- Mean Citation Score: 275.60779800000006
- Max Citation Score: 288.81464
- Similarity Product: 232.66364774718284

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