PATENT CLAIM ANALYSIS

Application Number: 16142592
Application Type: Utility
Filing Date: 2018-09
Publication Date: 2019-01
Patent Classification: ["252", "372000"]

Abstract:
A process for producing ammonia synthesis gas from a hydrocarbon-containing feedstock, with steps of primary reforming, secondary reforming with an oxidant stream, and further treatment of the synthesis gas including shift, removal of carbon dioxide and methanation, wherein the synthesis gas delivered by secondary reforming is subject to a medium-temperature shift (MTS) at a temperature between 200 and 350.degree. C., and primary reforming is operated with a steam-to-carbon ratio lower than 2. A corresponding method for revamping an ammonia plant is disclosed, where an existing HTS reactor is modified to operate at medium temperature, or replaced with a new MTS reactor, and the steam-to-carbon ratio in the primary reformer is lowered to a value in the range 1-5-2, thus reducing inert steam in the flow rate trough the equipments of the front-end.

Claim (Index 1):
A method for revamping of an ammonia plant comprising a front-end for production of an ammonia synthesis gas, and a synthesis loop for reaction of said synthesis gas into ammonia, said front-end comprising at least a primary reformer, a secondary reformer, a high-temperature shift HTS reactor, the primary reformer being connected with a hydrocarbon feed and a steam feed,\n said method comprising at least the steps of: replacing said HTS reactor with a new medium-temperature shift reactor, or modifying said HTS reactor for operation at medium temperature, said medium temperature being 200 to 350\u00b0 C.; modifying said hydrocarbon feed and steam feed to the primary reformer, so to obtain operation of said primary reformer with a steam-to-carbon ratio lower than 2; and adding a pre-reforming section upstream of the primary steam reformer.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 97.0
- Lexical Diversity: 1.75
- Patent Class: 252.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13805016', '14380741', '13120396', '14889943', '15104448']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8218973273987146
- 35 USC 102 Novelty (BERT): 0.5087018514834197
- Combined Prediction Score: 0.7905777798071851
- Mean Citation Score: 279.165828
- Max Citation Score: 315.8002
- Similarity Product: 248.3263851833225

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