Refining coal-derived liquid from coal gasification, coking and other coal processing operations
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 12, 2012
Grant Date -
Jul 14, 2011
app pub date -
Mar 23, 2011
filing date -
Aug 12, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
|
US Family Size
|
Non-US Coverage
|
|
Patent Longevity
|
Forward Citations
|
Abstract
A method of treating a coal-derived liquid byproduct from a coal gasification process includes subjecting the coal-derived liquid to a vacuum distillation process, thereby separating the coal-derived liquid into condensed gas and coal-derived liquid bottoms. The coal-derived liquid bottoms are mixed with a bottoms solvent capable of dissolving the coal-derived liquid bottoms. The solvent/bottoms mixture is introduced along with a linear chain hydrocarbon solvent into a liquid extractor. The Raffinate is separated from the solvent for the coal-derived liquid/bottoms mixture, thereby producing in a heavy extract. The condensed gas is subjected to atmospheric distillation producing a bottoms fraction and another condensed fraction. The bottoms fraction may be used as fuel or for diesel fuel production. The condensed fraction is extracted with a linear hydrocarbon solvent in an extractor to produce light neutral oil and a Raffinate which is a cresylic acid feed stock.
First Claim
Other Claims data not available
Family
| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| US | A1 | US20100038288 | Aug 12, 2008 |
| CN | B | CN101649222 | Oct 31, 2008 |
International Classification(s)
- 2011 Application Filing Year
- C10G Class
- 583 Applications Filed
- 513 Patents Issued To-Date
- 88 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C10G Class
- 0 % this patent is cited more than
- 13 Age
