PATENT CLAIM ANALYSIS

Application Number: 15938606
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-08
Patent Classification: ["422", "224000"]

Abstract:
Present invention relates to a process and an installation ( 100 ) for the preparation of hydrogen cyanide by the Andrussow process, and more precisely for improving the conditions of mixing the reactant gases before feeding the Andrussow type reactor ( 60 ), in order to improve safety, to avoid any risk of explosion and to produce HCN in safe and efficient manner. The installation is configured in such a manner that oxygen is pre-mixed with air with a ratio comprised between 20.95% and 32.5% by volume, preferably between 25% and 30.5% by volume; methane containing gas and ammonia are simultaneously added in the pre-mixture of oxygen-enriched air in such a manner that the volumic ratio of methane to ammonia is comprised between 1.35 and 1.02 depending on the content of oxygen into air; said obtained reactant gases mixture having a temperature comprised between 80° C. and 120° C., preferably between 95° C. and 115° C. for feeding the Andrussow type reactor ( 60 ).

Claim (Index 1):
An installation ( 100 ) for the preparation of hydrogen cyanide HCN, said installation comprising:\n A) an Andrussow type reactor ( 60 ), in which is introduced a reactant gases mixture of methane-containing gas, ammonia and oxygen-enriched air, said mixture reacting inside said reactor ( 60 ) over a catalyst to produce HCN, B) upstream of said Andrussow type reactor ( 60 ) according to the direction of gas flow, gas feeding pipes (P 1  to P 4 ) for feeding the installation with each reactant gas, a first unit (U 1 ) for pre-mixing oxygen with air before adding methane-containing gas and ammonia into the obtained pre-mixture of oxygen-enriched air, wherein said first unit (U 1 ) comprises at least one oxygen online controller so as to control the ratio of oxygen into air, said ratio of oxygen to air comprising between 20.95% and 32.5% in volume of oxygen; C) a second unit (U 2 ) for adding simultaneously methane-containing gas and ammonia into the oxygen-enriched air, with a volumic ratio of methane to ammonia, being between 1.35 and 1.02 depending on the proportion of oxygen into the oxygen-enriched air; and D) at least one heat exchanger for heating at least one of the reactant gases, in order to have a temperature of said reactant gases mixture feeding said Andrussow type reactor ( 60 ) comprised between 80\u00b0 C. and 120\u00b0 C.

Metadata:
- Claim Count in Document: 23.0
- Percentile: 90.0
- Lexical Diversity: 1.91398
- Patent Class: 422.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14905435', '14905462', '10733274', '15029306', '12529512']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8155961593324266
- 35 USC 102 Novelty (BERT): 0.5801415664084357
- Combined Prediction Score: 0.7920507000400274
- Mean Citation Score: 350.91836800000016
- Max Citation Score: 531.4579
- Similarity Product: 446.1250492746592

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