PATENT CLAIM ANALYSIS

Application Number: 15894863
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-06
Patent Classification: ["203", "029000"]

Abstract:
A method for manufacturing high purity sulfuric acid is provided. A mixed solution subsequently undergoes a first preheating step, a second preheating step, a distilling step and an evaporating step to remove peroxide, water, oxygen and insoluble impurities, so as to obtain the first gas containing sulfur trioxide, sulfuric acid and hydrogen oxide. And then, the sulfur trioxide is absorbed by a sulfuric acid solution, thereby forming the high purity sulfuric acid.

Claim (Index 1):
A system for manufacturing a high purity sulfuric acid, comprising:\n a feed tank, configured to store a mixed solution, wherein a feed port is disposed on a top of the feed tank, a discharging port is disposed on a bottom of the feed tank, and the discharging port is connected to a first pipe; a first sulfuric acid purifying device, connected to the feed tank by the first pipe, thereby feeding the mixed solution into the first sulfuric acid purifying device, wherein the first sulfuric acid purifying device is operated at 1 atm, and the first sulfuric acid purifying device comprises:\n a first preheating tank, connected to the feed tank by the first pipe; \n a second preheating tank, connected to the first preheating tank by a second pipe, and the second preheating tank is installed at a first height which is lower than an installing height of the first preheating tank; and \n a distillation tower, connected to the second preheating tank by a third pipe, and the distillation tower is installed at a second height which is lower than an installing height of the second preheating tank; and \n a second sulfuric acid purifying device, connected to the distillation tower by a fourth pipe, and the second sulfuric acid purifying device is installed at a third height which is lower than an installing height of the distillation tower, wherein the second sulfuric acid purifying device is operated at 1 atm, and the second sulfuric acid purifying device comprises:\n an evaporator tower, connected to the distillation tower by the fourth pipe, wherein the evaporator tower is configured to perform an evaporation step to the first solution to form a first gas, and the first gas comprises sulfur trioxide (SO 3 ), sulfuric acid, and water; \n an absorption tower, connected to the evaporator tower by a fifth pipe, wherein the absorption tower comprises an absorbent, the absorbent is sulfuric acid for absorbing the first gas, thereby obtaining a high purity sulfuric acid, and a concentration of the high purity sulfuric acid is at least 96 weight percent; and \n a collecting tank, connected to the absorption tower by a sixth pipe to collect the high purity sulfuric acid.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 88.0
- Lexical Diversity: 1.72917
- Patent Class: 203.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14266819', '16074080', '14167040', '10301782', '14135190']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6898565439951067
- 35 USC 102 Novelty (BERT): 0.5228863889888805
- Combined Prediction Score: 0.673159528494484
- Mean Citation Score: 239.436564
- Max Citation Score: 335.59595
- Similarity Product: 264.63567306522134

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