Desulfurized black liquor soap compositions and processes for producing
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United States of America Patent
Stats
-
Jun 15, 2021
Grant Date -
Nov 7, 2019
app pub date -
Apr 26, 2019
filing date -
May 1, 2018
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method to purify black liquor soap (BLS) from sulfur compounds is disclosed. In the BLS desulfurization method, a BLS composition is heated in an inert atmosphere and sulfur is removed via aqueous extractions with inorganic base in the absence of other chemicals such as brine, sulfate salts and carbonate salts. The purified BLS composition exhibits favorable properties, including reduced sulfur content, lower color, and improved odor characteristics. The resulting tall oil compositions, depitched tall oil compositions, tall oil distillation fractions, and products derived therefrom also show reduced sulfur content, lower color, and improved odor characteristics.
First Claim
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International Classification(s)
- 2019 Application Filing Year
- C11B Class
- 227 Applications Filed
- 132 Patents Issued To-Date
- 58.15 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C11B Class
- 0 % this patent is cited more than
- 4 Age
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