PATENT CLAIM ANALYSIS

Application Number: 15953703
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-12
Patent Classification: ["095", "013000"]

Abstract:
Ammonia-adding apparatus and methods for ammonia-based desulfurization use multi-stage control, calculate a theoretical amount of ammonia based on gas amounts provided by an inlet continuous emission monitoring system (CEMS) and an outlet CEMS of the ammonia-based desulfurization device or associated gas amounts, a SO 2  concentration provided by the inlet CEMS, and a predetermined SO 2  concentration of the outlet CEMS. The apparatus and methods calculate a corrected theoretical amount of ammonia using half of the ratio of the actual amount of added ammonia to the actual amount of removed sulfur dioxide as a correction coefficient for the theoretical amount of ammonia; add an ammonia absorbent equivalent to the corrected theoretical amount of ammonia to the ammonia-based desulfurization device through an ammonia metering means and an ammonia control valve, and automatically control the actual ammonia flow rate based on the actual SO 2  concentration and a change trend provided by the outlet CEMS.

Claim (Index 64):
Apparatus for adding ammonia to an absorption solution in a flue-gas desulfurization system, the apparatus comprising:\n an emission monitoring system configured to provide a measure of an output sulfur dioxide characteristic; valves configured to:\n add ammonia to the absorption solution at a base rate that is proportional to:\n a) a target sulfur dioxide removal rate defined as a difference between:\n 1) a product of: \n \u2003a gas flow rate corresponding to an inlet of the desulfurization system and an inlet SO 2  concentration; and \n 2) a product of: \n \u2003a gas flow rate corresponding to an outlet of the desulfurization system and a predetermined SO 2  outlet concentration; and \n \n b) a correction coefficient that includes a ratio of cumulative ammonia added to cumulative sulfur dioxide removed; and, \n \n then, control ammonia addition to the absorption solution to a second rate based on the measure of the output sulfur dioxide characteristic; and \n a distributed control system configured to:\n receive a steam generation rate from a boiler that produces the flue gas; and \n calculate an amount of required ammonia based, at least partly, on the steam generation rate, \n wherein the gas flow rate corresponding to the inlet is evaluated as the steam generation rate.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 91.0
- Lexical Diversity: 2.34783
- Patent Class: 95.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15661186', '15923031', '14829905', '15938272', '15618975']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7643233040844211
- 35 USC 102 Novelty (BERT): 0.5469849722114687
- Combined Prediction Score: 0.7425894708971258
- Mean Citation Score: 261.460336
- Max Citation Score: 411.55978
- Similarity Product: 373.246037429645

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