US2022348837A1PendingUtilityA1
Processing of low rank coal
Est. expiryJan 15, 2040(~13.5 yrs left)· nominal 20-yr term from priority
Inventors:Bjornulf Ostvik
Y02E50/30C10F 7/08C10L 2230/22C10L 5/14C10L 2250/04C10L 2290/30C10F 7/02C10L 5/363C10L 2290/28C10L 9/10C10L 5/04C10F 5/00C10L 9/08C10L 2290/24C10L 2290/22C10B 53/08C10L 2290/02C10L 2290/46C10L 2290/08C10L 2290/06C10L 5/366C10L 5/22
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Claims
Abstract
A method of preparing a fuel composition includes placing coal having a heat content between about 3,000 BTU/lb and about 9,000 BTU/lb and a moisture content between about 20 wt % and about 60 wt % in a vessel. The coal is exposed to heat and a pressure less than atmospheric pressure within the vessel, thereby reducing the coal, such that an average primary particle size of the coal is less than 1 millimeter. A binder is introduced to the vessel, such that the coal combines with the binder to yield a mixture. The mixture is shaped to yield a fuel composition.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . A method of preparing a fuel composition, the method comprising:
placing coal having a heat content between about 3,000 BTU/lb and about 9,000 BTU/lb and a moisture content in a range between about 20 wt % and about 60 wt % in a vessel; exposing the coal to heat and a pressure less than atmospheric pressure within the vessel, thereby reducing the coal, such that an average primary particle size of the coal is less than 1 millimeter; introducing a binder to the vessel, such that the coal combines with the binder to yield a mixture; and shaping the mixture to yield a fuel composition.Join the waitlist — get patent alerts
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