PATENT CLAIM ANALYSIS

Application Number: 16257665
Application Type: Utility
Filing Date: 2019-01
Publication Date: 2019-05
Patent Classification: ["423", "239100"]

Abstract:
A method and a corresponding plant for denitrifying bypass exhaust gases in a cement clinker production plant. Raw meal is sintered in a rotary kiln and deacidified in a calciner. A rotary kiln inlet chamber is connected to the calciner directly or by a riser duct. Bypass exhaust gas is drawn off near the inlet chamber. This exhaust gas is guided into a first mixing chamber, in which the exhaust gas is cooled to between 800 and 950° C., then the exhaust gas is guided through a reaction pipeline segment, wherein the dwell time is between 0.5 and 3 seconds and ammonia, aqueous ammonia solution, or ammonia-releasing substances are injected for denitrification. Then the exhaust gas is guided into a second mixing chamber, in which the exhaust gas is cooled to between 150 to 250° C. Then the exhaust gas is guided to a filter for dust removal.

Claim (Index 5):
An apparatus for the denitrification of bypass exhaust gases in the production of cement clinker, comprising:\n a rotary kiln configured to sinter raw meal and provide cement clinker, the rotary kiln having a rotary kiln inlet chamber; a calciner configured to deacidify raw meal, the rotary kiln inlet chamber being connected directly or via a kiln riser duct to the calciner; a first mixing chamber configured to receive bypass exhaust gas from the rotary kiln inlet chamber and cool the bypass exhaust gas to a temperature of between 800\u00b0 C. and 950\u00b0 C. so that chloride compounds remain in a gaseous phase after the bypass exhaust gas is cooled; a reactor, configured to receive the bypass exhaust gas after the bypass exhaust gas is cooled in the first mixing chamber, the reactor disposed in a conduit and dimensioned such that the residence time of the bypass exhaust gas in the conduit is between 0.5 s and 3 s, at least one device configured to inject ammonia, aqueous ammonia solution or ammonia-releasing substances into the reactor for the denitrification of the bypass exhaust gas by the process of selective non-catalytic reduction (SNCR), a second mixing chamber configured to receive the bypass exhaust gas and ammonia, aqueous ammonia solution or ammonia-releasing substances from the reactor and to cool the bypass exhaust gas to a temperature of between 150\u00b0 C. and 250\u00b0 C. to remove chloride compounds by deposition, and at least one filter, downstream of the second mixing chamber in the gas flow direction, for dedusting the bypass exhaust gas after it has been cooled in the second mixing chamber.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 99.0
- Lexical Diversity: 2.07792
- Patent Class: 423.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15554163', '15027626', '15864683', '10587087', '16130815']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7786739735630299
- 35 USC 102 Novelty (BERT): 0.5433607715801133
- Combined Prediction Score: 0.7551426533647383
- Mean Citation Score: 289.237914
- Max Citation Score: 394.87897
- Similarity Product: 358.72441396048424

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

Dataset: test