Method and apparatus for improved operation of chemical recovery boilers
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United States of America Patent
Stats
-
May 7, 2024
Grant Date -
Jun 8, 2023
app pub date -
Mar 4, 2021
filing date -
Mar 4, 2020
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A chemical recovery boilers is described in which the primary air system is reconfigured to provide aggressive charbed control and improved combustion in the lower furnace. The fewest number of primary air ports are used on two opposing walls to generate powerful air jets that penetrate across the boiler providing physical and thermal stability to the charbed while increasing the heat release and combustion stability in the lower furnace, increasing reduction efficiency, and lowering carryover and emissions. Various embodiments are described including operating strategies and multi-level black liquor injection.
First Claim
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International Classification(s)
- 2021 Application Filing Year
- F23G Class
- 105 Applications Filed
- 46 Patents Issued To-Date
- 43.81 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F23G Class
- 0 % this patent is cited more than
- 1 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Nov 7, 2027 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Nov 7, 2031 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 7, 2035 |
