Reducing sulfur gas emissions resulting from the burning of carbonaceous fuels
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United States of America Patent
Stats
-
Nov 5, 2013
Grant Date -
Nov 20, 2008
app pub date -
Apr 8, 2005
filing date -
Jun 28, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A process for burning coal or other carbonaceous fuels captures sulfur and other undesirable compounds are captured and retained in non-reactive ceramic-like form after the combustion phase. The process involves addition of multiple element alkali powders and/or sorbents preferably containing oxidizing anions such as nitrates and nitrites, preferably based on calcium. In various embodiments, the remediation materials when applied in a complex powder and/or liquid containing multiple elements, result in higher sulfur capture than the materials would otherwise achieve on an individual basis. In a preferred embodiment, the sorbents contain elements that minimize or lower the melting point of the ash. This leads to lowered cohesiveness and toughness of the ash so that less ash builds up on the boiler and better heat transfer is obtained.
First Claim
Other Claims data not available
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International Classification(s)
- 2005 Application Filing Year
- C10L Class
- 123 Applications Filed
- 68 Patents Issued To-Date
- 55.29 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 27 Citation Count
- C10L Class
- 93.66 % this patent is cited more than
- 12 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 5, 2025 |
