PATENT CLAIM ANALYSIS

Application Number: 15765683
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2019-02
Patent Classification: ["423", "530000"]

Abstract:
The invention is a method and a sulfuric acid plant design for reduction of start-up SO 2 , SO 3  and H 2 SO 4  emissions in sulfuric acid production, in which SO2 is converted to SO 3  in n successive catalyst beds, where n is an integer >1. The final catalytic beds are used as absorbents for SO 2  to SO3 during the start-up procedure, and one or more of the m beds downstream the first bed are purged, either separately or simultaneously, with hot gas, where m is an integer >1 and m<n, during the previous shut-down. Also, one separate purge with hot gas is used on the final bed.

Claim (Index 13):
A method according to  claim 12 , wherein the catalyst contains 2-20 wt % sulfur, preferably 3-18 wt % sulfur, in the form of sulfate, pyrosulfate, tri- or tetrasulfate.

Metadata:
- Claim Count in Document: 38.0
- Percentile: 91.0
- Lexical Diversity: 1.86765
- Patent Class: 423.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['11273333', '15317523', '12617356', '16098818', '11971948']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7654039784447076
- 35 USC 102 Novelty (BERT): 0.4755978384106837
- Combined Prediction Score: 0.7364233644413053
- Mean Citation Score: 145.87072400000002
- Max Citation Score: 152.74419
- Similarity Product: 109.12735846664783

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