Efficient Volatile Metal Removal from Low Rank Coal in Gasification, Combustion, and Processing Systems and Methods
AssigneeThe University of Wyoming Research Corporation d/b/a Western Research Institute
InventorsAlan E. Bland, Kumar Muthusami Sellakumar, Jesse D. Newcomer
Life of this patent
Estimating the term…
Abstract
Efficient coal pre-processing systems (69) integrated with gasification, oxy-combustion, and power plant systems include a drying chamber (28), a volatile metal removal chamber (30), recirculated gases, including recycled carbon dioxide (21), nitrogen (6), and gaseous exhaust (60) for increasing the efficiencies and lowering emissions in various coal processing systems.
Claims29
1-60. (canceled)
An efficient method for coal gasification comprising the steps of:
- supplying wet coal in a coal gasification system assembly;
- feeding said wet coal into at least one chamber of said coal gasification system assembly;
- drying said wet coal in said at least one chamber to create a substantially dried coal having a coal temperature of up to about 300° F.;
- removing volatile metals from said substantially dried coal in said at least one chamber to create a volatile metal reduced dried coal having a coal temperature of up to about 600° F.;
- transferring said volatile metal reduced dried coal to a gasifier;
- producing syngas from said volatile metal reduced dried coal in said gasifier;
- filtering said syngas from particulate matter;
- separating carbon dioxide from said syngas to create a fuel gas supply and a downstream carbon dioxide supply;
- and
- recirculating said downstream carbon dioxide back into at least part of said coal gasification system assembly.
(canceled)
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73-78. (canceled)
84-85. (canceled)
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92-94. (canceled)
96-309. (canceled)
Dependencies are inferred from the claim text.