PATENT CLAIM ANALYSIS

Application Number: 16323758
Application Type: Utility
Filing Date: 2019-02
Publication Date: 2019-06
Patent Classification: ["423", "243030"]

Abstract:
A system ( 100 ) for producing aqueous sulphuric acid. The system ( 100 ) comprises a first heat exchanger ( 410 ) configured to cool water and/or aqueous sulphuric for producing cooled water and/or cooled aqueous sulphuric acid; a pre-cooling unit ( 200 ) configured to pre-cool some gas containing sulphur trioxide, the pre-cooling unit ( 200 ) comprising an inlet or inlets ( 212, 214 ) for receiving [i] the gas containing sulphur trioxide and [ii] the cooled water and/or the cooled aqueous sulphuric acid, an outlet ( 216 ) for letting out aqueous sulphuric acid and the gas containing sulphur trioxide, and a first nozzle ( 220 ) for spraying the cooled water and/or the cooled aqueous sulphuric acid onto the gas containing sulphur trioxide to cool the gas containing sulphur trioxide. The system further comprises a condensation tower ( 300 ) comprising a first inlet ( 302 ) for receiving the cooled gas containing sulphur trioxide and aqueous sulphuric acid from the pre-cooling unit ( 200 ) and means ( 320 ) for circulating the aqueous sulphuric acid within the

Claim (Index 25):
A method for producing aqueous sulphuric acid from a sulphur dioxide containing gas of a liquor circulation of a pulp mill ( 600 ), the method comprising the steps of:\n separating some gas containing sulphur dioxide from a liquor circulation of the pulp mill ( 600 ), conveying the gas containing sulphur dioxide to a converter ( 500 ), in the converter ( 500 ), catalytically oxidizing at least some of the sulphur dioxide to sulphur trioxide, thereby producing the gas comprising sulphur trioxide, conveying the gas comprising sulphur trioxide to a pre-cooling unit ( 200 ) such that such that at a an inlet ( 212 ) of the pre-cooling unit, the temperature of the gas containing sulphur trioxide is at least 300\u00b0 C., in a first heat exchanger ( 410 ), cooling water and/or aqueous sulphuric acid thereby producing cooled water and/or cooled aqueous sulphuric acid, in the pre-cooling unit ( 200 ), cooling the gas containing sulphur trioxide to a temperature of at most 120\u00b0 C. by spraying the cooled water and/or the cooled aqueous sulphuric acid onto the gas containing sulphur trioxide using a first nozzle ( 220 ), whereby at least some of the sulphur trioxide forms aqueous sulphuric acid with the water and/or the aqueous sulphuric acid, conveying the cooled gas containing sulphur trioxide and aqueous sulphuric acid from the pre-cooling unit ( 200 ) to a condensation tower ( 300 ), and in the condensation tower ( 300 ), strengthening the aqueous sulphuric acid by circulating the aqueous sulphuric acid in the condensation tower ( 300 ) and by spraying the aqueous sulphuric acid onto the gas containing sulphur trioxide using a second nozzle ( 326 ).

Metadata:
- Claim Count in Document: 2.0
- Percentile: 99.0
- Lexical Diversity: 2.91045
- Patent Class: 423.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['10532326', '12523230', '10230835', '12733314', '13263139']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.785556917967486
- 35 USC 102 Novelty (BERT): 0.4957343049249627
- Combined Prediction Score: 0.7565746566632336
- Mean Citation Score: 224.009612
- Max Citation Score: 251.608
- Similarity Product: 192.0210730605125

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

Dataset: test