PATENT CLAIM ANALYSIS

Application Number: 15976322
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2019-02
Patent Classification: ["423", "522000"]

Abstract:
Commercial production of sulfuric acid is almost entirely accomplished nowadays using the contact process. And the trend is to increase conversion efficiency and reduce emissions of unconverted sulfur dioxide. By using a special combination of contact catalyst beds, a single contact single absorption (SCSA) system can be engineered to achieve the conversion and emission capabilities of conventional double contact double absorption systems. Thus, the complexity and cost of incorporating a second absorption tower and associated heat exchanger in the system can be omitted. In the SCSA system, the initial catalyst bed or beds comprise vanadium oxide catalyst and the last catalyst bed or beds comprise platinum catalyst operating at a much lower temperature than the initial beds.

Claim (Index 9):
A method for improving conversion efficiency in the production of sulfuric acid by oxidizing sulfur dioxide in a single contact, single absorption system, the method comprising:\n providing the single contact, single absorption system of  claim 1 ; directing a gas stream comprising sulfur dioxide and oxygen to the gas supply inlet at a vanadium oxide catalyst activation temperature; passing the gas stream through the series of vanadium oxide catalyst beds thereby converting sulfur dioxide in the gas stream to sulfur trioxide; cooling the gas stream from the outlet of the last vanadium oxide catalyst bed in the series of vanadium oxide catalyst beds in the platinum catalyst bed heat exchanger to a platinum catalyst activation temperature in the range from about 250 to 350\u00b0 C.; passing the gas stream through the series of platinum catalyst beds thereby converting sulfur dioxide in the gas stream to sulfur trioxide; and absorbing the sulfur trioxide in the gas stream into water in the absorption tower, thereby producing sulfuric acid.

Metadata:
- Claim Count in Document: 31.0
- Percentile: 93.0
- Lexical Diversity: 1.69333
- Patent Class: 423.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15317523', '16098818', '15765683', '13882480', '14520408']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7737668890264643
- 35 USC 102 Novelty (BERT): 0.6086320863848605
- Combined Prediction Score: 0.757253408762304
- Mean Citation Score: 322.870722
- Max Citation Score: 531.19604
- Similarity Product: 516.7844656890464

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

Dataset: test