PATENT CLAIM ANALYSIS

Application Number: 16091309
Application Type: Utility
Filing Date: 2018-10
Publication Date: 2019-05
Patent Classification: ["518", "712000"]

Abstract:
A method for producing methanol allows the temperature of the catalyst layer to fall within an appropriate temperature range, reduces energy used, and achieves higher carbon yield. In a synthesis loop including at least two synthesis steps and two separation steps, a first mixed gas is obtained by mixing the final unreacted gas with a fraction of the make-up gas, methanol is synthesized from the first mixed gas after preheating, a first unreacted gas is separated from the obtained first reaction mixture, a final mixed gas is obtained by finally mixing the unreacted gas and a fraction of the make-up gas, the final mixed gas after preheating is further increased in pressure and then methanol is synthesized, a final unreacted gas is separated from the obtained final reaction mixture, and the reaction temperature of the catalyst layer is controlled by the indirect heat exchange with pressurized boiling water.

Claim (Index 1):
A method for producing methanol comprising: synthesis steps of synthesizing methanol from a synthesis gas comprising hydrogen, carbon monoxide and carbon dioxide; and separation steps of separating an unreacted gas from a reaction mixture obtained by passing through one of the synthesis steps,\n the method comprising a synthesis loop having at least two of the synthesis steps and at least two of the separation steps, wherein the synthesis loop comprises: a first mixing step of obtaining a first mixed gas by mixing a residual gas, obtained by removing a purge gas from a final unreacted gas separated from a final reaction mixture in a final separation step subsequent to a final synthesis step, with 10 to 90 mol % of a make-up gas comprising hydrogen, carbon monoxide and carbon dioxide; a first synthesis step of synthesizing methanol from the first mixed gas; a first separation step of separating a first unreacted gas from a first reaction mixture obtained in the first synthesis step; a final mixing step of obtaining a final mixed gas by finally mixing the unreacted gas and at least a fraction of 10 to 90 mol % of the make-up gas; the final synthesis step of synthesizing methanol from the final mixed gas; and the final separation step of separating the final unreacted gas from the final reaction mixture obtained in the final synthesis step, the synthesis loop also comprises: a first preheating step of preheating the first mixed gas; a final preheating step of preheating the final mixed gas; and a pressure increase step of increasing the pressure of the final mixed gas having passed through the final preheating step before the final synthesis step by using a circulator, and in the synthesis loop, a reaction temperature of a catalyst layer is controlled by indirect heat exchange with pressurized boiling water.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 97.0
- Lexical Diversity: 2.30435
- Patent Class: 518.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15519003', '12653149', '11572119', '15502134', '14081403']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6636278638305179
- 35 USC 102 Novelty (BERT): 0.5818403973880059
- Combined Prediction Score: 0.6554491171862666
- Mean Citation Score: 271.808922
- Max Citation Score: 397.50092
- Similarity Product: 387.40006761673936

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